Add tasks module to python package build

Update ci_templates/.cic-template.yml

See merge request grassrootseconomics/cic-internal-integration!61

.dockerignore

@@ -1,4 +0,0 @@
-.git
-.cache
-.dot
-**/doc

.gitlab-ci.yml

@@ -5,6 +5,7 @@ include:
   - local: 'apps/cic-ussd/.gitlab-ci.yml'
   - local: 'apps/cic-notify/.gitlab-ci.yml'
   - local: 'apps/cic-meta/.gitlab-ci.yml'
+  - local: 'apps/cic-cache/.gitlab-ci.yml'
 
 stages:
   - build

.gitmodules

@@ -1,6 +0,0 @@
-[submodule "apps/cic-cache"]
-	path = apps/cic-cache
-	url = git@gitlab.com:grassrootseconomics/cic-cache.git
-[submodule "apps/cic-meta"]
-	path = apps/cic-meta
-	url = git@gitlab.com:grassrootseconomics/cic-meta.git

README.md

@@ -2,6 +2,13 @@
 
 ## Getting started 
 
+## Make some keys
+
+```
+docker build -t bloxie . && docker run -v "$(pwd)/keys:/root/keys" --rm -it -t bloxie account new --chain /root/bloxberg.json --keys-path /root/keys
+```
+
+
 ### Prepare the repo
 
 This is stuff we need to put in  makefile but for now...

apps/bloxbergValidatorSetup/.gitignore

@@ -1,3 +1,6 @@
 /validator/bloxbergData
 /validator/bloxberg.log
-keys/**/*
+keys/*
+!keys/Bloxberg
+keys/Bloxberg/*
+!keys/Bloxberg/UTC--2021-02-10T16-57-35Z--03512a62-5334-20cc-4e44-71156f33cff6

apps/bloxbergValidatorSetup/Dockerfile

@@ -17,7 +17,7 @@ COPY ./validator/bloxberg.json \
      ./validator/validator.toml \
      /root/
 
-COPY ./keys/ /root/keys/
+COPY keys/ /root/keys/
 
 # RUN chown -R parity:parity $HOME/ && \
 #     chmod -R 775 $HOME/ && \
@@ -25,4 +25,4 @@ COPY ./keys/ /root/keys/
 # USER parity
 
 ENTRYPOINT [ "parity" ]
-CMD [ "--config", "/root/validator.toml", "--keys-path", "/root/keys/" ]
+CMD [ "--config", "/root/validator.toml", "--keys-path", "/root/keys/", "--password", "/root/validator.pwd" ]

apps/bloxbergValidatorSetup/README.md

@@ -4,7 +4,7 @@
 The original bloxberg node config was kind of annoying so I am running it more like vanilla parity. This way you can pass command flags directly to parity.
 ## Make some keys
 ```
-docker build -t bloxie . && docker run -v ${PWD}/keys:/root/keys --rm -it -t bloxie account new --chain /root/bloxberg.json --keys-path /root/keys
+docker build -t bloxie . && docker run -v ${PWD}/keys:/root/keys --rm -it -t bloxie account new --chain /root/bloxberg.json --keys-path /root/keys --password /root/validator.pwd
 ```
 
 ## Enter the signer address and passwords in the config files

apps/bloxbergValidatorSetup/keys/Bloxberg/UTC--2021-02-10T16-57-35Z--03512a62-5334-20cc-4e44-71156f33cff6

@@ -0,0 +1 @@
+{"id":"03512a62-5334-20cc-4e44-71156f33cff6","version":3,"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"dc388338c4d4e3203604aeb3d1c6bbfa"},"ciphertext":"8a945775b87089ce94537e011799f3abc1577c5dd1f3fbaebe1cd96dfdfc8b5a","kdf":"pbkdf2","kdfparams":{"c":10240,"dklen":32,"prf":"hmac-sha256","salt":"e8585836540caca01282381f5c1fe128e53b15b40f9d152fbc5a4f82a7967398"},"mac":"a7c7815e84a632ecf6d8f18c981bea73d50cd2e2a855a3e90477fc84ed14f906"},"address":"4f2a5902158c3969b245247f4154971d393301f2","name":"","meta":"{}"}

apps/bloxbergValidatorSetup/validator/bloxberg.json

@@ -7,7 +7,7 @@
                 "maximumUncleCount": 0,
                 "stepDuration": "5",
                 "validators" : {
-                     "list": ["0x6bd4e51b3730576ddc4049654ef60ed7f7436cb5"]
+                     "list": ["0x4f2a5902158c3969b245247f4154971d393301f2"]
                 }
             }
         }

apps/bloxbergValidatorSetup/validator/validator.toml

@@ -26,7 +26,7 @@ password = ["/root/validator.pwd"]
 
 [mining]
 #CHANGE ENGINE SIGNER TO VALIDATOR ADDRESS
-engine_signer = "0x6bd4e51b3730576ddc4049654ef60ed7f7436cb5"
+engine_signer = "0x4f2a5902158c3969b245247f4154971d393301f2"
 reseal_on_txs = "none"
 force_sealing = true
 min_gas_price = 1000000

apps/cic-cache/.config/bancor.ini

@@ -0,0 +1,2 @@
+[bancor]
+dir =

apps/cic-cache/.config/cic.ini

@@ -0,0 +1,2 @@
+[cic]
+registry_address = 

apps/cic-cache/.config/database.ini

@@ -0,0 +1,8 @@
+[database]
+NAME=cic-eth
+USER=postgres
+PASSWORD=
+HOST=localhost
+PORT=5432
+ENGINE=postgresql
+DRIVER=psycopg2

apps/cic-cache/.config/eth.ini

@@ -0,0 +1,6 @@
+[eth]
+provider = ws://localhost:8545
+#ttp_provider = http://localhost:8545
+#provider = http://localhost:8545
+gas_provider_address = 
+#chain_id = 

apps/cic-cache/.config/test/bancor.ini

@@ -0,0 +1,2 @@
+[bancor]
+dir =

apps/cic-cache/.config/test/cic.ini

@@ -0,0 +1,2 @@
+[cic]
+registry_address = 

apps/cic-cache/.config/test/database.ini

@@ -0,0 +1,8 @@
+[database]
+NAME=cic-cache-test
+USER=postgres
+PASSWORD=
+HOST=localhost
+PORT=5432
+ENGINE=sqlite
+DRIVER=pysqlite

apps/cic-cache/.config/test/eth.ini

@@ -0,0 +1,5 @@
+[eth]
+#ws_provider = ws://localhost:8546
+#ttp_provider = http://localhost:8545
+provider = http://localhost:8545
+#chain_id = 

apps/cic-cache/.coveragerc

@@ -0,0 +1,5 @@
+[report]
+omit = 
+	.venv/*
+	scripts/*
+	cic_cache/db/postgres/*

apps/cic-cache/.envrc_example

@@ -0,0 +1,7 @@
+set -a
+CICTEST_DATABASE_ENGINE=postgresql
+CICTEST_DATABASE_DRIVER=psycopg2
+CICTEST_DATABASE_HOST=localhost
+CICTEST_DATABASE_PORT=5432
+CICTEST_DATABASE_NAME=cic-eth-test
+set +a

apps/cic-cache/.gitignore

@@ -0,0 +1,8 @@
+.envrc
+.envrc_dev
+.venv
+__pycache__
+*.pyc
+_build
+doc/**/*.png
+doc/**/html

apps/cic-cache/.gitlab-ci.yml

@@ -0,0 +1,22 @@
+.cic_cache_variables:
+    variables:
+        APP_NAME: cic-cache
+        DOCKERFILE_PATH: $APP_NAME/docker/Dockerfile
+
+.cic_cache_changes_target:
+    rules:
+        - changes:
+            - $CONTEXT/$APP_NAME/*
+
+build-mr-cic-cache:
+    extends:
+        - .cic_cache_changes_target
+        - .py_build_merge_request
+        - .cic_cache_variables
+
+build-push-cic-cache:
+    extends:
+        - .py_build_push
+        - .cic_cache_variables
+        
+

apps/cic-cache/CHANGELOG

@@ -0,0 +1,13 @@
+- 0.1.2
+	* Revert to alembic migrations
+- 0.1.1
+	* Add missing modules to setup 
+- 0.1.0
+	* Remove old APIs
+	* Add bloom filter output APIs for all txs and per-account txs
+- 0.0.2
+	* UWSGI server endpoint example
+	* OpenAPI spec
+	* stored procedures, test fixture for database schema
+- 0.0.1
+	* Add json translators of transaction_list and balances stored procedure queries

apps/cic-cache/cic_cache/__init__.py

@@ -0,0 +1 @@
+from .cache import BloomCache

apps/cic-cache/cic_cache/api.py

@@ -0,0 +1,73 @@
+"""API for cic-cache celery tasks
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+
+"""
+# standard imports
+import logging
+
+# third-party imports 
+import celery
+
+
+app = celery.current_app
+
+logg = logging.getLogger(__name__)
+
+
+class Api:
+    """Creates task chains to perform well-known CIC operations.
+
+    Each method that sends tasks returns details about the root task. The root task uuid can be provided in the callback, to enable to caller to correlate the result with individual calls. It can also be used to independently poll the completion of a task chain.
+
+    :param callback_param: Static value to pass to callback
+    :type callback_param: str
+    :param callback_task: Callback task that executes callback_param call. (Must be included by the celery worker)
+    :type callback_task: string
+    :param queue: Name of worker queue to submit tasks to
+    :type queue: str
+    """
+    def __init__(self, queue='cic-cache', callback_param=None, callback_task='cic_cache.callbacks.noop.noop', callback_queue=None):
+        self.callback_param = callback_param
+        self.callback_task = callback_task
+        self.queue = queue
+        logg.info('api using queue {}'.format(self.queue))
+        self.callback_success = None
+        self.callback_error = None
+        if callback_queue == None:
+            callback_queue=self.queue
+
+        if callback_param != None:
+            self.callback_success = celery.signature(
+                    callback_task,
+                    [
+                        callback_param,
+                        0,
+                        ],
+                    queue=callback_queue,
+                    )
+            self.callback_error = celery.signature(
+                    callback_task,
+                    [
+                        callback_param,
+                        1,
+                        ],
+                    queue=callback_queue,
+                    )       
+
+    def list(self, offset, limit, address=None):
+        s = celery.signature(
+        'cic_cache.tasks.tx.tx_filter',
+        [
+            0,
+            100,
+            address,
+            ],
+            queue=None
+        )
+        if self.callback_param != None:
+            s.link(self.callback_success).on_error(self.callback_error)
+
+        t = s.apply_async()
+
+        return t

apps/cic-cache/cic_cache/cache.py

@@ -0,0 +1,89 @@
+# standard imports
+import logging
+
+# third-party imports
+import moolb
+
+# local imports
+from cic_cache.db import list_transactions_mined
+from cic_cache.db import list_transactions_account_mined
+
+logg = logging.getLogger()
+
+
+class BloomCache:
+
+    def __init__(self, session):
+        self.session = session
+
+
+    @staticmethod
+    def __get_filter_size(n):
+        n = 8192 * 8
+        logg.warning('filter size hardcoded to {}'.format(n))
+        return n
+
+
+    def load_transactions(self, offset, limit):
+        """Retrieves a list of transactions from cache and creates a bloom filter pointing to blocks and transactions.
+
+        Block and transaction numbers are serialized as 32-bit big-endian numbers. The input to the second bloom filter is the concatenation of the serialized block number and transaction index.
+
+        For example, if the block number is 13 and the transaction index is 42, the input are:
+
+        block filter:       0x0d000000
+        block+tx filter:    0x0d0000002a0000000
+
+        :param offset: Offset in data set to return transactions from
+        :type offset: int
+        :param limit: Max number of transactions to retrieve
+        :type limit: int
+        :return: Lowest block, bloom filter for blocks, bloom filter for blocks|tx
+        :rtype: tuple
+        """
+        rows = list_transactions_mined(self.session, offset, limit) 
+
+        f_block = moolb.Bloom(BloomCache.__get_filter_size(limit), 3)
+        f_blocktx = moolb.Bloom(BloomCache.__get_filter_size(limit), 3)
+        highest_block = -1
+        lowest_block = -1
+        for r in rows:
+            if highest_block == -1:
+                highest_block = r[0]
+            lowest_block = r[0]
+            block = r[0].to_bytes(4, byteorder='big')
+            tx = r[1].to_bytes(4, byteorder='big')
+            f_block.add(block)
+            f_blocktx.add(block + tx)
+            logg.debug('added block {} tx {} lo {} hi {}'.format(r[0], r[1], lowest_block, highest_block))
+        return (lowest_block, highest_block, f_block.to_bytes(), f_blocktx.to_bytes(),)
+
+
+    def load_transactions_account(self, address, offset, limit):
+        """Same as load_transactions(...), but only retrieves transactions where the specified account address is sender or recipient.
+
+        :param address: Address to retrieve transactions for.
+        :type address: str, 0x-hex
+        :param offset: Offset in data set to return transactions from
+        :type offset: int
+        :param limit: Max number of transactions to retrieve
+        :type limit: int
+        :return: Lowest block, bloom filter for blocks, bloom filter for blocks|tx
+        :rtype: tuple
+        """
+        rows = list_transactions_account_mined(self.session, address, offset, limit) 
+
+        f_block = moolb.Bloom(BloomCache.__get_filter_size(limit), 3)
+        f_blocktx = moolb.Bloom(BloomCache.__get_filter_size(limit), 3)
+        highest_block = -1;
+        lowest_block = -1;
+        for r in rows:
+            if highest_block == -1:
+                highest_block = r[0]
+            lowest_block = r[0]
+            block = r[0].to_bytes(4, byteorder='big')
+            tx = r[1].to_bytes(4, byteorder='big')
+            f_block.add(block)
+            f_blocktx.add(block + tx)
+            logg.debug('added block {} tx {} lo {} hi {}'.format(r[0], r[1], lowest_block, highest_block))
+        return (lowest_block, highest_block, f_block.to_bytes(), f_blocktx.to_bytes(),)

apps/cic-cache/cic_cache/db/__init__.py

@@ -0,0 +1,35 @@
+# standard imports
+import logging
+
+# local imports
+from .list import list_transactions_mined
+from .list import list_transactions_account_mined
+from .list import add_transaction
+
+logg = logging.getLogger()
+
+
+def dsn_from_config(config):
+    scheme = config.get('DATABASE_ENGINE')
+    if config.get('DATABASE_DRIVER') != None:
+        scheme += '+{}'.format(config.get('DATABASE_DRIVER'))
+
+    dsn = ''
+    if config.get('DATABASE_ENGINE') == 'sqlite':
+        dsn = '{}:///{}'.format(
+                scheme,
+                config.get('DATABASE_NAME'),    
+            )
+
+    else:
+        dsn = '{}://{}:{}@{}:{}/{}'.format(
+                scheme,
+                config.get('DATABASE_USER'),
+                config.get('DATABASE_PASSWORD'),
+                config.get('DATABASE_HOST'),
+                config.get('DATABASE_PORT'),
+                config.get('DATABASE_NAME'),    
+            )
+    logg.debug('parsed dsn from config: {}'.format(dsn))
+    return dsn
+

apps/cic-cache/cic_cache/db/list.py

@@ -0,0 +1,79 @@
+# standard imports
+import logging
+import datetime
+
+# third-party imports
+from cic_cache.db.models.base import SessionBase
+
+logg = logging.getLogger()
+
+
+def list_transactions_mined(
+        session,
+        offset,
+        limit,
+        ):
+    """Executes db query to return all confirmed transactions according to the specified offset and limit.
+
+    :param offset: Offset in data set to return transactions from
+    :type offset: int
+    :param limit: Max number of transactions to retrieve
+    :type limit: int
+    :result: Result set
+    :rtype: SQLAlchemy.ResultProxy
+    """
+    s = "SELECT block_number, tx_index FROM tx ORDER BY block_number DESC, tx_index DESC LIMIT {} OFFSET {}".format(limit, offset)
+    r = session.execute(s)
+    return r
+
+
+def list_transactions_account_mined(
+        session,
+        address,
+        offset,
+        limit,
+        ):
+    """Same as list_transactions_mined(...), but only retrieves transaction where the specified account address is sender or recipient.
+
+    :param address: Address to retrieve transactions for.
+    :type address: str, 0x-hex
+    :param offset: Offset in data set to return transactions from
+    :type offset: int
+    :param limit: Max number of transactions to retrieve
+    :type limit: int
+    :result: Result set
+    :rtype: SQLAlchemy.ResultProxy
+    """
+    s = "SELECT block_number, tx_index FROM tx WHERE sender = '{}' OR recipient = '{}' ORDER BY block_number DESC, tx_index DESC LIMIT {} OFFSET {}".format(address, address, limit, offset)
+    r = session.execute(s)
+    return r
+
+
+def add_transaction(
+        session, tx_hash,
+        block_number,
+        tx_index,
+        sender,
+        receiver,
+        source_token,
+        destination_token,
+        from_value,
+        to_value,
+        success,
+        timestamp,
+        ):
+    date_block = datetime.datetime.fromtimestamp(timestamp)
+    s = "INSERT INTO tx (tx_hash, block_number, tx_index, sender, recipient, source_token, destination_token, from_value, to_value, success, date_block) VALUES ('{}', {}, {}, '{}', '{}', '{}', '{}', {}, {}, {}, '{}')".format(
+            tx_hash,
+            block_number,
+            tx_index,
+            sender,
+            receiver,
+            source_token,
+            destination_token,
+            from_value,
+            to_value,
+            success,
+            date_block,
+            )
+    session.execute(s)

apps/cic-cache/cic_cache/db/migrations/default/README

@@ -0,0 +1 @@
+Generic single-database configuration.

apps/cic-cache/cic_cache/db/migrations/default/alembic.ini

@@ -0,0 +1,86 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = .
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# timezone to use when rendering the date
+# within the migration file as well as the filename.
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; this defaults
+# to ./versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path
+# version_locations = %(here)s/bar %(here)s/bat ./versions
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+#sqlalchemy.url = driver://user:pass@localhost/dbname
+sqlalchemy.url = postgresql+psycopg2://postgres@localhost:5432/cic-cache
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks=black
+# black.type=console_scripts
+# black.entrypoint=black
+# black.options=-l 79
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

apps/cic-cache/cic_cache/db/migrations/default/env.py

@@ -0,0 +1,77 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = None
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

apps/cic-cache/cic_cache/db/migrations/default/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

apps/cic-cache/cic_cache/db/migrations/default/versions/63b629f14a85_.py

@@ -0,0 +1,52 @@
+"""Base tables
+
+Revision ID: 63b629f14a85
+Revises: 
+Create Date: 2020-12-04 08:16:00.412189
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '63b629f14a85'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+            'tx',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('date_registered', sa.DateTime, nullable=False, server_default=sa.func.current_timestamp()),
+            sa.Column('block_number', sa.Integer, nullable=False),
+            sa.Column('tx_index', sa.Integer, nullable=False),
+            sa.Column('tx_hash', sa.String(66), nullable=False),
+            sa.Column('sender', sa.String(42), nullable=False),
+            sa.Column('recipient', sa.String(42), nullable=False),
+            sa.Column('source_token', sa.String(42), nullable=False),
+            sa.Column('destination_token', sa.String(42), nullable=False),
+            sa.Column('success', sa.Boolean, nullable=False),
+            sa.Column('from_value', sa.NUMERIC(), nullable=False),
+            sa.Column('to_value', sa.NUMERIC(), nullable=False),
+            sa.Column('date_block', sa.DateTime, nullable=False),
+            )
+    op.create_table(
+            'tx_sync',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('tx', sa.String(66), nullable=False),
+            )
+
+    op.execute("INSERT INTO tx_sync (tx) VALUES('0x0000000000000000000000000000000000000000000000000000000000000000');")
+
+    op.create_index('sender_token_idx', 'tx', ['sender', 'source_token'])
+    op.create_index('recipient_token_idx', 'tx', ['recipient', 'destination_token'])
+            
+
+def downgrade():
+    op.drop_index('recipient_token_idx')
+    op.drop_index('sender_token_idx')
+    op.drop_table('tx_sync')
+    op.drop_table('tx')

apps/cic-cache/cic_cache/db/models/base.py

@@ -0,0 +1,102 @@
+# stanard imports
+import logging
+
+# third-party imports
+from sqlalchemy import Column, Integer
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+logg = logging.getLogger()
+
+Model = declarative_base(name='Model')
+
+
+class SessionBase(Model):
+    """The base object for all SQLAlchemy enabled models. All other models must extend this.
+    """
+    __abstract__ = True
+ 
+    id = Column(Integer, primary_key=True)
+
+    engine = None
+    """Database connection engine of the running aplication"""
+    sessionmaker = None
+    """Factory object responsible for creating sessions from the  connection pool"""
+    transactional = True
+    """Whether the database backend supports query transactions. Should be explicitly set by initialization code"""
+    poolable = True
+    """Whether the database backend supports connection pools. Should be explicitly set by initialization code"""
+    procedural = True
+    """Whether the database backend supports stored procedures"""
+    localsessions = {}
+    """Contains dictionary of sessions initiated by db model components"""
+
+
+    @staticmethod
+    def create_session():
+        """Creates a new database session.
+        """
+        return SessionBase.sessionmaker()
+
+
+    @staticmethod
+    def _set_engine(engine):
+        """Sets the database engine static property
+        """
+        SessionBase.engine = engine
+        SessionBase.sessionmaker = sessionmaker(bind=SessionBase.engine)
+
+
+    @staticmethod
+    def connect(dsn, debug=False):
+        """Create new database connection engine and connect to database backend.
+
+        :param dsn: DSN string defining connection.
+        :type dsn: str
+        """
+        e = None
+        if SessionBase.poolable:
+            e = create_engine(
+                    dsn,
+                    max_overflow=50,
+                    pool_pre_ping=True,
+                    pool_size=20,
+                    pool_recycle=10,
+                    echo=debug,
+                )
+        else:
+            e = create_engine(
+                    dsn,
+                    echo=debug,
+                    )
+
+        SessionBase._set_engine(e)
+
+
+    @staticmethod
+    def disconnect():
+        """Disconnect from database and free resources.
+        """
+        SessionBase.engine.dispose()
+        SessionBase.engine = None
+
+
+    @staticmethod
+    def bind_session(session=None):
+        localsession = session
+        if localsession == None:
+            localsession = SessionBase.create_session()
+            localsession_key = str(id(localsession))
+            logg.debug('creating new session {}'.format(localsession_key))
+            SessionBase.localsessions[localsession_key] = localsession
+        return localsession
+
+
+    @staticmethod
+    def release_session(session=None):
+        session_key = str(id(session))
+        if SessionBase.localsessions.get(session_key) != None:
+            logg.debug('destroying session {}'.format(session_key))
+            session.commit()
+            session.close()

apps/cic-cache/cic_cache/runnable/server.py

@@ -0,0 +1,141 @@
+# standard imports
+import os
+import re
+import logging
+import argparse
+import json
+import base64
+
+# third-party imports
+import confini
+
+# local imports
+from cic_cache import BloomCache
+from cic_cache.db import dsn_from_config
+from cic_cache.db.models.base import SessionBase
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+rootdir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+dbdir = os.path.join(rootdir, 'cic_cache', 'db')
+migrationsdir = os.path.join(dbdir, 'migrations')
+
+config_dir = os.path.join('/usr/local/etc/cic-cache')
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-c', type=str, default=config_dir, help='config file')
+argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
+argparser.add_argument('-v', action='store_true', help='be verbose')
+argparser.add_argument('-vv', action='store_true', help='be more verbose')
+args = argparser.parse_args()
+
+if args.vv:
+    logging.getLogger().setLevel(logging.DEBUG)
+elif args.v:
+    logging.getLogger().setLevel(logging.INFO)
+
+config = confini.Config(args.c, args.env_prefix)
+config.process()
+config.censor('PASSWORD', 'DATABASE')
+config.censor('PASSWORD', 'SSL')
+logg.debug('config:\n{}'.format(config))
+
+dsn = dsn_from_config(config)
+SessionBase.connect(dsn, config.true('DATABASE_DEBUG'))
+
+re_transactions_all_bloom = r'/tx/(\d+)?/?(\d+)/?'
+re_transactions_account_bloom = r'/tx/user/((0x)?[a-fA-F0-9]+)/?(\d+)?/?(\d+)/?'
+
+DEFAULT_LIMIT = 100
+
+
+def process_transactions_account_bloom(session, env):
+    r = re.match(re_transactions_account_bloom, env.get('PATH_INFO'))
+    if not r:
+        return None
+
+    address = r[1]
+    if r[2] == None:
+        address = '0x' + address
+    offset = DEFAULT_LIMIT
+    if r.lastindex > 2:
+        offset = r[3]
+    limit = 0
+    if r.lastindex > 3:
+        limit = r[4]
+
+    c = BloomCache(session)
+    (lowest_block, highest_block, bloom_filter_block, bloom_filter_tx) = c.load_transactions_account(address, offset, limit)
+
+    o = {
+        'alg': 'sha256',
+        'low': lowest_block,
+        'high': highest_block,
+        'block_filter': base64.b64encode(bloom_filter_block).decode('utf-8'),
+        'blocktx_filter': base64.b64encode(bloom_filter_tx).decode('utf-8'),
+        'filter_rounds': 3,
+            }
+
+    j = json.dumps(o)
+
+    return ('application/json', j.encode('utf-8'),)
+
+
+def process_transactions_all_bloom(session, env):
+    r = re.match(re_transactions_all_bloom, env.get('PATH_INFO'))
+    if not r:
+        return None
+
+    offset = DEFAULT_LIMIT
+    if r.lastindex > 0:
+        offset = r[1]
+    limit = 0
+    if r.lastindex > 1:
+        limit = r[2]
+
+    c = BloomCache(session)
+    (lowest_block, highest_block, bloom_filter_block, bloom_filter_tx) = c.load_transactions(offset, limit)
+
+    o = {
+        'alg': 'sha256',
+        'low': lowest_block,
+        'high': highest_block,
+        'block_filter': base64.b64encode(bloom_filter_block).decode('utf-8'),
+        'blocktx_filter': base64.b64encode(bloom_filter_tx).decode('utf-8'),
+        'filter_rounds': 3,
+            }
+
+    j = json.dumps(o)
+
+    return ('application/json', j.encode('utf-8'),)
+
+
+# uwsgi application
+def application(env, start_response):
+
+    headers = []
+    content = b''
+
+    session = SessionBase.create_session()
+    for handler in [
+            process_transactions_all_bloom,
+            process_transactions_account_bloom,
+            ]:
+        r = handler(session, env)
+        if r != None:
+            (mime_type, content) = r
+            break
+    session.close()
+
+    headers.append(('Content-Length', str(len(content))),)
+    headers.append(('Access-Control-Allow-Origin', '*',));
+
+    if len(content) == 0:
+        headers.append(('Content-Type', 'text/plain, charset=UTF-8',))
+        start_response('404 Looked everywhere, sorry', headers)
+    else:
+        headers.append(('Content-Type', mime_type,))
+        start_response('200 OK', headers)
+
+    return [content]

apps/cic-cache/cic_cache/runnable/tasker.py

@@ -0,0 +1,98 @@
+# standard imports
+import logging
+import os
+import sys
+import argparse
+
+# third-party imports
+import celery
+import confini
+
+# local imports
+from cic_cache.db import dsn_from_config
+from cic_cache.db.models.base import SessionBase
+from cic_cache.tasks.tx import *
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+config_dir = os.path.join('/usr/local/etc/cic-cache')
+
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-c', type=str, default=config_dir, help='config file')
+argparser.add_argument('-q', type=str, default='cic-cache', help='queue name for worker tasks')
+argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
+argparser.add_argument('-v', action='store_true', help='be verbose')
+argparser.add_argument('-vv', action='store_true', help='be more verbose')
+
+args = argparser.parse_args()
+
+if args.vv:
+    logging.getLogger().setLevel(logging.DEBUG)
+elif args.v:
+    logging.getLogger().setLevel(logging.INFO)
+
+config = confini.Config(args.c, args.env_prefix)
+config.process()
+
+# connect to database
+dsn = dsn_from_config(config)
+SessionBase.connect(dsn)
+
+# verify database connection with minimal sanity query
+#session = SessionBase.create_session()
+#session.execute('select version_num from alembic_version')
+#session.close()
+
+# set up celery
+current_app = celery.Celery(__name__)
+
+broker = config.get('CELERY_BROKER_URL')
+if broker[:4] == 'file':
+    bq = tempfile.mkdtemp()
+    bp = tempfile.mkdtemp()
+    current_app.conf.update({
+            'broker_url': broker,
+            'broker_transport_options': {
+                'data_folder_in': bq,
+                'data_folder_out': bq,
+                'data_folder_processed': bp,
+            },
+            },
+            )
+    logg.warning('celery broker dirs queue i/o {} processed {}, will NOT be deleted on shutdown'.format(bq, bp))
+else:
+    current_app.conf.update({
+        'broker_url': broker,
+        })
+
+result = config.get('CELERY_RESULT_URL')
+if result[:4] == 'file':
+    rq = tempfile.mkdtemp()
+    current_app.conf.update({
+        'result_backend': 'file://{}'.format(rq),
+        })
+    logg.warning('celery backend store dir {} created, will NOT be deleted on shutdown'.format(rq))
+else:
+    current_app.conf.update({
+        'result_backend': result,
+        })
+
+
+def main():
+    argv = ['worker']
+    if args.vv:
+        argv.append('--loglevel=DEBUG')
+    elif args.v:
+        argv.append('--loglevel=INFO')
+    argv.append('-Q')
+    argv.append(args.q)
+    argv.append('-n')
+    argv.append(args.q)
+
+    current_app.worker_main(argv)
+
+
+if __name__ == '__main__':
+    main()

apps/cic-cache/cic_cache/runnable/tracker.py

@@ -0,0 +1,339 @@
+# standard imports
+import sys
+import os
+import argparse
+import logging
+import time
+import enum
+import re
+
+# third-party imports
+import confini
+from cic_registry import CICRegistry
+from cic_registry.chain import (
+        ChainRegistry,
+        ChainSpec,
+        )
+#from cic_registry.bancor import BancorRegistryClient
+from cic_registry.token import Token
+from cic_registry.error import (
+        UnknownContractError,
+        UnknownDeclarationError,
+        )
+from cic_registry.declaration import to_token_declaration
+from web3.exceptions import BlockNotFound, TransactionNotFound
+from websockets.exceptions import ConnectionClosedError
+from requests.exceptions import ConnectionError
+import web3
+from web3 import HTTPProvider, WebsocketProvider
+
+# local imports
+from cic_cache import db
+from cic_cache.db.models.base import SessionBase
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+logging.getLogger('websockets.protocol').setLevel(logging.CRITICAL)
+logging.getLogger('urllib3').setLevel(logging.CRITICAL)
+logging.getLogger('web3.RequestManager').setLevel(logging.CRITICAL)
+logging.getLogger('web3.providers.WebsocketProvider').setLevel(logging.CRITICAL)
+logging.getLogger('web3.providers.HTTPProvider').setLevel(logging.CRITICAL)
+
+log_topics = {
+    'transfer': '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
+    'convert': '0x7154b38b5dd31bb3122436a96d4e09aba5b323ae1fd580025fab55074334c095',
+    'accountregistry_add': '0a3b0a4f4c6e53dce3dbcad5614cb2ba3a0fa7326d03c5d64b4fa2d565492737',
+    }
+
+config_dir = os.path.join('/usr/local/etc/cic-cache')
+
+argparser = argparse.ArgumentParser(description='daemon that monitors transactions in new blocks')
+argparser.add_argument('-c', type=str, default=config_dir, help='config root to use')
+argparser.add_argument('-i', '--chain-spec', type=str, dest='i', help='chain spec')
+argparser.add_argument('--trust-address', default=[], type=str, dest='trust_address', action='append', help='Set address as trust')
+argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
+argparser.add_argument('--abi-dir', dest='abi_dir', type=str, help='Directory containing bytecode and abi')
+argparser.add_argument('-v', help='be verbose', action='store_true')
+argparser.add_argument('-vv', help='be more verbose', action='store_true')
+args = argparser.parse_args(sys.argv[1:])
+
+config_dir = os.path.join(args.c)
+os.makedirs(config_dir, 0o777, True)
+
+
+if args.v == True:
+    logging.getLogger().setLevel(logging.INFO)
+elif args.vv == True:
+    logging.getLogger().setLevel(logging.DEBUG)
+
+config = confini.Config(config_dir, args.env_prefix)
+config.process()
+args_override = {
+        'ETH_ABI_DIR': getattr(args, 'abi_dir'),
+        'CIC_TRUST_ADDRESS': ",".join(getattr(args, 'trust_address', [])),
+        }
+config.dict_override(args_override, 'cli flag')
+config.censor('PASSWORD', 'DATABASE')
+config.censor('PASSWORD', 'SSL')
+logg.debug('config loaded from {}:\n{}'.format(config_dir, config))
+
+# connect to database
+dsn = db.dsn_from_config(config)
+SessionBase.connect(dsn)
+
+
+re_websocket = re.compile('^wss?://')
+re_http = re.compile('^https?://')
+blockchain_provider = config.get('ETH_PROVIDER')
+if re.match(re_websocket, blockchain_provider) != None:
+    blockchain_provider = WebsocketProvider(blockchain_provider)
+elif re.match(re_http, blockchain_provider) != None:
+    blockchain_provider = HTTPProvider(blockchain_provider)
+else:
+    raise ValueError('unknown provider url {}'.format(blockchain_provider))
+
+def web3_constructor():
+    w3 = web3.Web3(blockchain_provider)
+    return (blockchain_provider, w3)
+
+
+class RunStateEnum(enum.IntEnum):
+    INIT = 0
+    RUN = 1
+    TERMINATE = 9
+
+
+def rubberstamp(src):
+    return True
+
+
+class Tracker:
+
+    def __init__(self, chain_spec, trusts=[]):
+        self.block_height = 0
+        self.tx_height = 0
+        self.state = RunStateEnum.INIT
+        self.declarator_cache = {}
+        self.convert_enabled = False
+        self.trusts = trusts
+        self.chain_spec = chain_spec
+        self.declarator = CICRegistry.get_contract(chain_spec, 'AddressDeclarator', 'Declarator')
+
+
+    def __process_tx(self, w3, session, t, r, l, b):
+        token_value = int(l.data, 16)
+        token_sender = l.topics[1][-20:].hex()
+        token_recipient = l.topics[2][-20:].hex()
+
+        #ts = ContractRegistry.get_address(t.address)
+        ts = CICRegistry.get_address(self.chain_spec, t.address())
+        logg.info('add token transfer {} value {} from {} to {}'.format(
+            ts.symbol(),
+            token_value,
+            token_sender,
+            token_recipient,
+            )
+            )
+
+        db.add_transaction(
+                session,
+                r.transactionHash.hex(),
+                r.blockNumber,
+                r.transactionIndex,
+                w3.toChecksumAddress(token_sender),
+                w3.toChecksumAddress(token_recipient),
+                t.address(),
+                t.address(),
+                token_value,
+                token_value,
+                r.status == 1,
+                b.timestamp,
+                )
+        session.flush()
+
+
+    # TODO: simplify/ split up and/or comment, function is too long
+    def __process_convert(self, w3, session, t, r, l, b):
+        logg.warning('conversions are deactivated')
+        return
+#        token_source = l.topics[2][-20:].hex()
+#        token_source = w3.toChecksumAddress(token_source)
+#        token_destination = l.topics[3][-20:].hex()
+#        token_destination = w3.toChecksumAddress(token_destination)
+#        data_noox = l.data[2:]
+#        d = data_noox[:64]
+#        token_from_value = int(d, 16)
+#        d = data_noox[64:128]
+#        token_to_value = int(d, 16)
+#        token_trader = '0x' + data_noox[192-40:]
+#
+#        #ts = ContractRegistry.get_address(token_source)
+#        ts = CICRegistry.get_address(CICRegistry.bancor_chain_spec, t.address())
+#        #if ts == None:
+#        #    ts = ContractRegistry.reserves[token_source]
+#        td = ContractRegistry.get_address(token_destination)
+#        #if td == None:
+#        #    td = ContractRegistry.reserves[token_source]
+#        logg.info('add token convert {} -> {} value {} -> {} trader {}'.format(
+#            ts.symbol(),
+#            td.symbol(),
+#            token_from_value,
+#            token_to_value,
+#            token_trader,
+#            )
+#            )
+#
+#        db.add_transaction(
+#                session,
+#                r.transactionHash.hex(),
+#                r.blockNumber,
+#                r.transactionIndex,
+#                w3.toChecksumAddress(token_trader),
+#                w3.toChecksumAddress(token_trader),
+#                token_source,
+#                token_destination,
+#                r.status == 1,
+#                b.timestamp,
+#                )
+#        session.flush()
+
+
+    def check_token(self, address):
+            t = None
+            try:
+                t = CICRegistry.get_address(CICRegistry.default_chain_spec, address)
+                return t
+            except UnknownContractError:
+                logg.debug('contract {} not in registry'.format(address))
+
+            # If nothing was returned, we look up the token in the declarator
+            for trust in self.trusts:
+                logg.debug('look up declaration for contract {} with trust {}'.format(address, trust))
+                fn = self.declarator.function('declaration')
+                # TODO: cache trust in LRUcache
+                declaration_array = fn(trust, address).call()
+                try:
+                    declaration = to_token_declaration(trust, address, declaration_array, [rubberstamp])
+                    logg.debug('found declaration for token {} from trust address {}'.format(address, trust))
+                except UnknownDeclarationError:
+                    continue
+               
+                try:
+                    c = w3.eth.contract(abi=CICRegistry.abi('ERC20'), address=address)
+                    t = CICRegistry.add_token(self.chain_spec, c)
+                    break
+                except ValueError:
+                    logg.error('declaration for {} validates as token, but location is not ERC20 compatible'.format(address))
+
+            return t
+
+
+    # TODO use input data instead of logs
+    def process(self, w3, session, block):
+        #self.refresh_registry(w3)
+        tx_count = w3.eth.getBlockTransactionCount(block.hash)
+        b = w3.eth.getBlock(block.hash)
+        for i in range(self.tx_height, tx_count):
+            tx = w3.eth.getTransactionByBlock(block.hash, i)
+            if tx.to == None:
+                logg.debug('block {} tx {} is contract creation tx, skipping'.format(block.number, i))
+                continue
+            if len(w3.eth.getCode(tx.to)) == 0:
+                logg.debug('block {} tx {} not a contract tx, skipping'.format(block.number, i))
+                continue
+
+            t = self.check_token(tx.to)
+            if t != None and isinstance(t, Token):
+                r = w3.eth.getTransactionReceipt(tx.hash)
+                for l in r.logs:
+                    logg.debug('block {} tx {} {} token log {} {}'.format(block.number, i, tx.hash.hex(), l.logIndex, l.topics[0].hex()))
+                    if l.topics[0].hex() == log_topics['transfer']:
+                        self.__process_tx(w3, session, t, r, l, b)
+
+            # TODO: cache contracts in LRUcache
+            elif self.convert_enabled and tx.to == CICRegistry.get_contract(CICRegistry.default_chain_spec, 'Converter').address:
+                r = w3.eth.getTransactionReceipt(tx.hash)
+                for l in r.logs:
+                    logg.info('block {} tx {} {} bancornetwork log {} {}'.format(block.number, i, tx.hash.hex(), l.logIndex, l.topics[0].hex()))
+                    if l.topics[0].hex() == log_topics['convert']:
+                        self.__process_convert(w3, session, t, r, l, b)
+            
+            session.execute("UPDATE tx_sync SET tx = '{}'".format(tx.hash.hex()))
+            session.commit()
+            self.tx_height += 1
+
+
+    def __get_next_retry(self, backoff=False):
+        return 1
+
+
+    def loop(self):
+        logg.info('starting at block {} tx index {}'.format(self.block_height, self.tx_height))
+        self.state = RunStateEnum.RUN
+        while self.state == RunStateEnum.RUN:
+            (provider, w3) = web3_constructor()
+            session = SessionBase.create_session()
+            try:
+                block = w3.eth.getBlock(self.block_height)
+                self.process(w3, session, block)
+                self.block_height += 1
+                self.tx_height = 0
+            except BlockNotFound as e:
+                logg.debug('no block {} yet, zZzZ...'.format(self.block_height))
+                time.sleep(self.__get_next_retry())
+            except ConnectionClosedError as e:
+                logg.info('connection gone, retrying')
+                time.sleep(self.__get_next_retry(True))
+            except OSError as e:
+                logg.error('cannot connect {}'.format(e))
+                time.sleep(self.__get_next_retry(True))
+            except Exception as e:
+                session.close()
+                raise(e)
+            session.close()
+
+
+    def load(self, w3):
+        session = SessionBase.create_session()
+        r = session.execute('SELECT tx FROM tx_sync').first()
+        if r != None:
+            if r[0] == '0x{0:0{1}X}'.format(0, 64):
+                logg.debug('last tx was zero-address, starting from scratch')
+                return
+            t = w3.eth.getTransaction(r[0])
+            
+            self.block_height = t.blockNumber
+            self.tx_height = t.transactionIndex+1
+            c = w3.eth.getBlockTransactionCount(t.blockHash.hex())
+            logg.debug('last tx processed {} index {} (max index {})'.format(t.blockNumber, t.transactionIndex, c-1))
+            if c == self.tx_height:
+                self.block_height += 1
+                self.tx_height = 0
+        session.close()
+
+(provider, w3) = web3_constructor()
+trust = config.get('CIC_TRUST_ADDRESS', "").split(",")
+chain_spec = args.i
+
+try:
+    w3.eth.chainId
+except Exception as e:
+    logg.exception(e)
+    sys.stderr.write('cannot connect to evm node\n')
+    sys.exit(1)
+
+def main():
+    chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
+
+    CICRegistry.init(w3, config.get('CIC_REGISTRY_ADDRESS'), chain_spec)
+    CICRegistry.add_path(config.get('ETH_ABI_DIR'))
+    chain_registry = ChainRegistry(chain_spec)
+    CICRegistry.add_chain_registry(chain_registry)
+
+    t = Tracker(chain_spec, trust) 
+    t.load(w3)
+    t.loop()
+    
+
+if __name__ == '__main__':
+    main()

apps/cic-cache/cic_cache/tasks/tx.py

@@ -0,0 +1,38 @@
+# third-party imports
+import celery
+
+# local imports
+from cic_cache.cache import BloomCache
+from cic_cache.db.models.base import SessionBase
+
+celery_app = celery.current_app
+
+
+@celery_app.task(bind=True)
+def tx_filter(self, offset, limit, address=None, encoding='hex'):
+    queue = self.request.delivery_info.get('routing_key')
+
+    session = SessionBase.create_session()
+
+    c = BloomCache(session)
+    b = None
+    if address == None:
+        (lowest_block, highest_block, bloom_filter_block, bloom_filter_tx) = c.load_transactions(offset, limit)
+    else:
+        (lowest_block, highest_block, bloom_filter_block, bloom_filter_tx) = c.load_transactions_account(address, offset, limit)
+
+    session.close()
+
+    o = {
+        'alg': 'sha256',
+        'low': lowest_block,
+        'high': highest_block,
+        'block_filter': bloom_filter_block.hex(), 
+        'blocktx_filter': bloom_filter_tx.hex(),
+        'filter_rounds': 3,
+            }
+
+    return o
+
+
+

apps/cic-cache/cic_cache/version.py

@@ -0,0 +1,18 @@
+import os
+import semver
+
+version = (
+        0,
+        2,
+        0,
+        'alpha.1',
+        )
+
+version_object = semver.VersionInfo(
+        major=version[0],
+        minor=version[1],
+        patch=version[2],
+        prerelease=version[3],
+        )
+
+version_string = str(version_object)

apps/cic-cache/config/bancor.ini

@@ -0,0 +1,2 @@
+[bancor]
+dir =

apps/cic-cache/config/celery.ini

@@ -0,0 +1,3 @@
+[celery]
+broker_url = redis:///
+result_url = redis:///

apps/cic-cache/config/cic.ini

@@ -0,0 +1,4 @@
+[cic]
+registry_address = 
+chain_spec =
+trust_address = 

apps/cic-cache/config/database.ini

@@ -0,0 +1,9 @@
+[database]
+NAME=cic_cache
+USER=postgres
+PASSWORD=
+HOST=localhost
+PORT=5432
+ENGINE=postgresql
+DRIVER=psycopg2
+DEBUG=

apps/cic-cache/config/docker/bancor.ini

@@ -0,0 +1,3 @@
+[bancor]
+registry_address = 
+dir = /usr/local/share/bancor

apps/cic-cache/config/docker/celery.ini

@@ -0,0 +1,3 @@
+[celery]
+broker_url = redis://localhost:63379
+result_url = redis://localhost:63379

apps/cic-cache/config/docker/database.ini

@@ -0,0 +1,9 @@
+[database]
+NAME=cic_cache
+USER=grassroots
+PASSWORD=
+HOST=localhost
+PORT=63432
+ENGINE=postgresql
+DRIVER=psycopg2
+DEBUG=1

apps/cic-cache/config/docker/eth.ini

@@ -0,0 +1,3 @@
+[eth]
+provider = ws://localhost:63546
+chain_id = 8996

apps/cic-cache/config/eth.ini

@@ -0,0 +1,7 @@
+[eth]
+provider = ws://localhost:8545
+#ttp_provider = http://localhost:8545
+#provider = http://localhost:8545
+gas_provider_address = 
+#chain_id = 
+abi_dir = /usr/local/share/cic/solidity/abi

apps/cic-cache/config/test/bancor.ini

@@ -0,0 +1,2 @@
+[bancor]
+dir =

apps/cic-cache/config/test/cic.ini

@@ -0,0 +1,2 @@
+[cic]
+registry_address = 

apps/cic-cache/config/test/database.ini

@@ -0,0 +1,9 @@
+[database]
+NAME=cic-cache-test
+USER=postgres
+PASSWORD=
+HOST=localhost
+PORT=5432
+ENGINE=sqlite
+DRIVER=pysqlite
+DEBUG=

apps/cic-cache/config/test/eth.ini

@@ -0,0 +1,5 @@
+[eth]
+#ws_provider = ws://localhost:8546
+#ttp_provider = http://localhost:8545
+provider = http://localhost:8545
+#chain_id = 

apps/cic-cache/db/initdb_files/create_all_db.sql

@@ -0,0 +1,5 @@
+CREATE DATABASE "cic-cache";
+CREATE DATABASE "cic-eth";
+CREATE DATABASE "cic-notify";
+CREATE DATABASE "cic-meta";
+CREATE DATABASE "cic-signer";

apps/cic-cache/db/psycopg2/db.sql

@@ -0,0 +1,22 @@
+CREATE TABLE tx (
+	id SERIAL PRIMARY KEY,
+	date_registered TIMESTAMP NOT NULL default CURRENT_TIMESTAMP,
+	block_number INTEGER NOT NULL,
+	tx_index INTEGER NOT NULL,
+	tx_hash VARCHAR(66) NOT NULL,
+	sender VARCHAR(42) NOT NULL, 
+	recipient VARCHAR(42) NOT NULL, 
+	source_token VARCHAR(42) NOT NULL,
+	destination_token VARCHAR(42) NOT NULL,
+	from_value BIGINT NOT NULL,
+	to_value BIGINT NOT NULL,
+	success BOOLEAN NOT NULL, 
+	date_block TIMESTAMP NOT NULL
+);
+
+CREATE TABLE tx_sync (
+	id SERIAL PRIMARY KEY,
+	tx VARCHAR(66) NOT NULL
+);
+
+INSERT INTO tx_sync (tx) VALUES('0x0000000000000000000000000000000000000000000000000000000000000000');

apps/cic-cache/db/pysqlite/db.sql

@@ -0,0 +1,23 @@
+CREATE TABLE tx (
+	id SERIAL PRIMARY KEY,
+	date_registered DATETIME NOT NULL default CURRENT_DATE, 
+	block_number INTEGER NOT NULL,
+	tx_index INTEGER NOT NULL,
+	tx_hash VARCHAR(66) NOT NULL,
+	sender VARCHAR(42) NOT NULL, 
+	recipient VARCHAR(42) NOT NULL, 
+	source_token VARCHAR(42) NOT NULL,
+	destination_token VARCHAR(42) NOT NULL,
+	from_value INTEGER NOT NULL,
+	to_value INTEGER NOT NULL,
+	success BOOLEAN NOT NULL, 
+	date_block DATETIME NOT NULL,
+	CHECK (success IN (0, 1))
+);
+
+CREATE TABLE tx_sync (
+	id SERIAL PRIMARY_KEY,
+	tx VARCHAR(66) NOT NULL
+);
+
+INSERT INTO tx_sync (tx) VALUES('0x0000000000000000000000000000000000000000000000000000000000000000');

apps/cic-cache/doc/openapi/server.yml

@@ -0,0 +1,102 @@
+openapi: "3.0.3"
+info:
+  title: Grassroots Economics CIC Cache
+  description: Cache of processed transaction data from Ethereum blockchain and worker queues
+  termsOfService: bzz://grassrootseconomics.eth/terms
+  contact:
+    name: Grassroots Economics
+    url: https://www.grassrootseconomics.org
+    email: will@grassecon.org
+  license:
+    name: GPLv3
+  version: 0.1.0
+
+paths:
+  /tx/{offset}/{limit}:
+    description: Bloom filter for batch of latest transactions
+    get:
+      tags:
+        - transactions
+      description:
+        Retrieve transactions
+      operationId: tx.get
+      responses:
+        200:
+          description: Transaction query successful.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/BlocksBloom"
+
+
+    parameters:
+    - name: offset
+      in: path
+      schema:
+        type: integer
+        format: int32
+    - name: limit
+      in: path
+      schema:
+        type: integer
+        format: int32
+
+
+  /tx/{address}/{offset}/{limit}:
+    description: Bloom filter for batch of latest transactions by account
+    get:
+      tags:
+        - transactions
+      description:
+        Retrieve transactions
+      operationId: tx.get
+      responses:
+        200:
+          description: Transaction query successful. 
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/BlocksBloom"
+
+
+    parameters:
+    - name: address
+      in: path
+      required: true
+      schema:
+        type: string
+    - name: offset
+      in: path
+      schema:
+        type: integer
+        format: int32
+    - name: limit
+      in: path
+      schema:
+        type: integer
+        format: int32
+
+components:
+  schemas:
+    BlocksBloom:
+      type: object
+      properties:
+        low:
+          type: int
+          format: int32
+          description: The lowest block number included in the filter
+        block_filter:
+          type: string
+          format: byte
+          description: Block number filter
+        blocktx_filter:
+          type: string
+          format: byte
+          description: Block and tx index filter
+        alg:
+          type: string
+          description: Hashing algorithm (currently only using sha256)
+        filter_rounds:
+          type: int
+          format: int32
+          description: Number of hash rounds used to create the filter

apps/cic-cache/docker/Dockerfile

@@ -0,0 +1,54 @@
+FROM python:3.8.6-slim-buster
+
+#COPY --from=0 /usr/local/share/cic/solidity/ /usr/local/share/cic/solidity/
+
+WORKDIR /usr/src/cic-cache
+
+ARG pip_extra_index_url_flag='--index https://pypi.org/simple --extra-index-url https://pip.grassrootseconomics.net:8433'
+ARG root_requirement_file='requirements.txt'
+
+#RUN apk update && \
+#	apk add gcc musl-dev gnupg libpq
+#RUN apk add postgresql-dev
+#RUN apk add linux-headers
+#RUN apk add libffi-dev
+RUN apt-get update && \
+	apt install -y gcc gnupg libpq-dev wget make g++ gnupg bash procps git
+
+# Copy shared requirements from top of mono-repo
+RUN echo "copying root req file ${root_requirement_file}"
+COPY $root_requirement_file .
+RUN pip install -r $root_requirement_file $pip_extra_index_url_flag
+
+COPY cic-cache/requirements.txt ./
+COPY cic-cache/setup.cfg \
+	 cic-cache/setup.py \
+ 	 ./
+COPY cic-cache/cic_cache/ ./cic_cache/
+COPY cic-cache/scripts/ ./scripts/
+COPY cic-cache/test_requirements.txt ./
+RUN pip install $pip_extra_index_url_flag -r test_requirements.txt
+RUN pip install $pip_extra_index_url_flag .
+RUN pip install .[server]
+
+COPY cic-cache/tests/ ./tests/
+#COPY db/ cic-cache/db
+#RUN apk add postgresql-client
+
+# ini files in config directory defines the configurable parameters for the application
+# they can all be overridden by environment variables
+# to generate a list of environment variables from configuration, use: confini-dump -z <dir> (executable provided by confini package)
+COPY cic-cache/config/ /usr/local/etc/cic-cache/
+
+# for db migrations
+RUN git clone https://github.com/vishnubob/wait-for-it.git /usr/local/bin/wait-for-it/
+COPY cic-cache/cic_cache/db/migrations/ /usr/local/share/cic-cache/alembic/
+
+RUN git clone https://gitlab.com/grassrootseconomics/cic-contracts.git && \
+	mkdir -p /usr/local/share/cic/solidity && \
+	cp -R cic-contracts/abis /usr/local/share/cic/solidity/abi
+
+# Tracker
+# ENTRYPOINT ["/usr/local/bin/cic-cache-tracker", "-vv"]
+# Server
+# ENTRYPOINT [ "/usr/local/bin/uwsgi", "--wsgi-file", "/usr/local/lib/python3.8/site-packages/cic_cache/runnable/server.py", "--http", ":80", "--pyargv", "-vv" ]

apps/cic-cache/examples/bloom_client/parse.js

@@ -0,0 +1,40 @@
+let xmlhttprequest = require('xhr2');
+let moolb = require('moolb');
+
+let xhr = new xmlhttprequest();
+xhr.responseType = 'json';
+xhr.open('GET', 'http://localhost:5555/tx/0/100');
+xhr.addEventListener('load', (e) => {
+
+	d = xhr.response;
+
+	b_one = Buffer.from(d.block_filter, 'base64');
+	b_two = Buffer.from(d.blocktx_filter, 'base64');
+
+	for (let i = 0; i < 8192; i++) {
+		if (b_two[i] > 0) {
+			console.debug('value on', i, b_two[i]);
+		}
+	}
+	console.log(b_one, b_two);
+
+	let f_block = moolb.fromBytes(b_one, d.filter_rounds);
+	let f_blocktx = moolb.fromBytes(b_two, d.filter_rounds);
+	let a = new ArrayBuffer(8);
+	let w = new DataView(a);
+	for (let i = 410000; i < 430000; i++) {
+		w.setInt32(0, i);
+		let r = new Uint8Array(a.slice(0, 4));
+		if (f_block.check(r)) {
+			for (let j = 0; j < 200; j++) {
+				w = new DataView(a);
+				w.setInt32(4, j);
+				r = new Uint8Array(a);
+				if (f_blocktx.check(r)) {
+					console.log('true', i, j);
+				}
+			}
+		}
+	}
+});
+let r = xhr.send();

apps/cic-cache/requirements.txt

@@ -0,0 +1,10 @@
+alembic==1.4.2
+confini~=0.3.6b2
+uwsgi==2.0.19.1
+moolb~=0.1.0
+cic-registry~=0.5.3a4
+SQLAlchemy==1.3.20
+semver==2.13.0
+psycopg2==2.8.6
+celery==4.4.7
+redis==3.5.3

apps/cic-cache/scripts/migrate.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python
+import os
+import argparse
+import logging
+
+import alembic
+from alembic.config import Config as AlembicConfig
+import confini
+
+from cic_cache.db import dsn_from_config
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+# BUG: the dbdir doesn't work after script install
+rootdir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+dbdir = os.path.join(rootdir, 'cic_cache', 'db')
+migrationsdir = os.path.join(dbdir, 'migrations')
+
+config_dir = os.path.join('/usr/local/etc/cic-cache')
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-c', type=str, default=config_dir, help='config file')
+argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
+argparser.add_argument('--migrations-dir', dest='migrations_dir', default=migrationsdir, type=str, help='path to alembic migrations directory')
+argparser.add_argument('-v', action='store_true', help='be verbose')
+argparser.add_argument('-vv', action='store_true', help='be more verbose')
+args = argparser.parse_args()
+
+if args.vv:
+    logging.getLogger().setLevel(logging.DEBUG)
+elif args.v:
+    logging.getLogger().setLevel(logging.INFO)
+
+config = confini.Config(args.c, args.env_prefix)
+config.process()
+config.censor('PASSWORD', 'DATABASE')
+config.censor('PASSWORD', 'SSL')
+logg.debug('config:\n{}'.format(config))
+
+migrations_dir = os.path.join(args.migrations_dir, config.get('DATABASE_ENGINE'))
+if not os.path.isdir(migrations_dir):
+    logg.debug('migrations dir for engine {} not found, reverting to default'.format(config.get('DATABASE_ENGINE')))
+    migrations_dir = os.path.join(args.migrations_dir, 'default')
+
+# connect to database
+dsn = dsn_from_config(config)
+
+
+logg.info('using migrations dir {}'.format(migrations_dir))
+logg.info('using db {}'.format(dsn))
+ac = AlembicConfig(os.path.join(migrations_dir, 'alembic.ini'))
+ac.set_main_option('sqlalchemy.url', dsn)
+ac.set_main_option('script_location', migrations_dir)
+
+alembic.command.upgrade(ac, 'head')

apps/cic-cache/setup.cfg

@@ -0,0 +1,39 @@
+[metadata]
+name = cic-cache
+description = CIC Cache API and server
+author = Louis Holbrook
+author_email = dev@holbrook.no
+url = https://gitlab.com/grassrootseconomics/cic-eth
+keywords =
+	cic
+	cryptocurrency
+	ethereum
+classifiers =
+	Programming Language :: Python :: 3
+	Operating System :: OS Independent
+	Development Status :: 3 - Alpha
+	Environment :: No Input/Output (Daemon)
+	Intended Audience :: Developers
+	License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
+	Topic :: Internet
+#	Topic :: Blockchain :: EVM
+license = GPL3
+licence_files =
+	LICENSE.txt
+
+[options]
+python_requires = >= 3.6
+packages = 
+	cic_cache
+	cic_cache.tasks
+	cic_cache.db
+	cic_cache.db.models
+	cic_cache.runnable
+scripts =
+	./scripts/migrate.py
+
+[options.entry_points]
+console_scripts =
+	cic-cache-trackerd = cic_cache.runnable.tracker:main
+	cic-cache-serverd = cic_cache.runnable.server:main
+	cic-cache-taskerd = cic_cache.runnable.tasker:main

apps/cic-cache/setup.py

@@ -0,0 +1,60 @@
+from setuptools import setup
+
+import configparser
+import os
+import time
+
+from cic_cache.version import (
+        version_object,
+        version_string
+        )
+
+class PleaseCommitFirstError(Exception):
+    pass
+
+def git_hash():
+    import subprocess
+    git_diff = subprocess.run(['git', 'diff'], capture_output=True)
+    if len(git_diff.stdout) > 0:
+        raise PleaseCommitFirstError()
+    git_hash = subprocess.run(['git', 'rev-parse', 'HEAD'], capture_output=True)
+    git_hash_brief = git_hash.stdout.decode('utf-8')[:8]
+    return git_hash_brief
+
+version_string = str(version_object)
+
+try:
+    version_git = git_hash()
+    version_string += '+build.{}'.format(version_git)
+except FileNotFoundError:
+    time_string_pair = str(time.time()).split('.')
+    version_string += '+build.{}{:<09d}'.format(
+            time_string_pair[0],
+            int(time_string_pair[1]),
+            )
+print('final version string will be {}'.format(version_string))
+
+requirements = []
+f = open('requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    requirements.append(l.rstrip())
+f.close()
+
+test_requirements = []
+f = open('test_requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    test_requirements.append(l.rstrip())
+f.close()
+
+
+setup(
+    version=version_string,
+    install_requires=requirements,
+    tests_require=test_requirements,
+        )

apps/cic-cache/test_requirements.txt

@@ -0,0 +1,6 @@
+pytest==6.0.1
+pytest-cov==2.10.1
+pytest-mock==3.3.1
+pysqlite3==0.4.3
+sqlparse==0.4.1
+pytest-celery==0.0.0a1

apps/cic-cache/tests/conftest.py

@@ -0,0 +1,86 @@
+# standard imports
+import os
+import sys
+import datetime
+
+# third-party imports
+import pytest
+
+# local imports
+from cic_cache import db
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+root_dir = os.path.dirname(script_dir)
+sys.path.insert(0, root_dir)
+
+# fixtures
+from tests.fixtures_config import *
+from tests.fixtures_database import *
+from tests.fixtures_celery import *
+
+
+@pytest.fixture(scope='session')
+def balances_dict_fields():
+    return {
+            'out_pending': 0,
+            'out_synced': 1,
+            'out_confirmed': 2,
+            'in_pending': 3,
+            'in_synced': 4,
+            'in_confirmed': 5,
+    }
+
+
+@pytest.fixture(scope='function')
+def txs(
+        init_database,
+        list_defaults,
+        list_actors,
+        list_tokens,
+        ):
+
+    session = init_database
+
+    tx_number = 13 
+    tx_hash_first = '0x' + os.urandom(32).hex()
+    val = 15000
+    nonce = 1
+    dt = datetime.datetime.utcnow()
+    db.add_transaction(
+        session,
+        tx_hash_first,
+        list_defaults['block'],
+        tx_number,
+        list_actors['alice'],
+        list_actors['bob'],
+        list_tokens['foo'],
+        list_tokens['foo'],
+        1024,
+        2048,
+        True,
+        dt.timestamp(),
+            )
+
+
+    tx_number = 42
+    tx_hash_second = '0x' + os.urandom(32).hex()
+    tx_signed_second = '0x' + os.urandom(128).hex()
+    nonce = 1
+    dt -= datetime.timedelta(hours=1)
+    db.add_transaction(
+        session,
+        tx_hash_second,
+        list_defaults['block']-1,
+        tx_number,
+        list_actors['diane'],
+        list_actors['alice'],
+        list_tokens['foo'],
+        list_tokens['foo'],
+        1024,
+        2048,
+        False,
+        dt.timestamp(),
+        )
+    
+    session.commit()
+

apps/cic-cache/tests/fixtures_celery.py

@@ -0,0 +1,48 @@
+# third-party imports
+import pytest
+import tempfile
+import logging
+import shutil
+
+logg = logging.getLogger(__name__)
+
+
+# celery fixtures
+@pytest.fixture(scope='session')
+def celery_includes():
+    return [
+        'cic_cache.tasks.tx',
+    ]
+
+
+@pytest.fixture(scope='session')
+def celery_config():
+    bq = tempfile.mkdtemp()
+    bp = tempfile.mkdtemp()
+    rq = tempfile.mkdtemp()
+    logg.debug('celery broker queue {} processed {}'.format(bq, bp))
+    logg.debug('celery backend store {}'.format(rq))
+    yield {
+        'broker_url': 'filesystem://',
+        'broker_transport_options': {
+            'data_folder_in': bq,
+            'data_folder_out': bq,
+            'data_folder_processed': bp,
+            },
+        'result_backend': 'file://{}'.format(rq),
+            }
+    logg.debug('cleaning up celery filesystem backend files {} {} {}'.format(bq, bp, rq))
+    shutil.rmtree(bq)
+    shutil.rmtree(bp)
+    shutil.rmtree(rq)
+
+
+@pytest.fixture(scope='session')
+def celery_worker_parameters():
+    return {
+#            'queues': ('cic-cache'),
+            }
+
+@pytest.fixture(scope='session')
+def celery_enable_logging():
+    return True

apps/cic-cache/tests/fixtures_config.py

@@ -0,0 +1,20 @@
+# standard imports
+import os
+import logging
+
+# third-party imports
+import pytest
+import confini
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+root_dir = os.path.dirname(script_dir)
+logg = logging.getLogger(__file__)
+
+
+@pytest.fixture(scope='session')
+def load_config():
+    config_dir = os.path.join(root_dir, '.config/test')
+    conf = confini.Config(config_dir, 'CICTEST')
+    conf.process()
+    logg.debug('config {}'.format(conf))
+    return conf

apps/cic-cache/tests/fixtures_database.py

@@ -0,0 +1,118 @@
+# standard imports
+import os
+import logging
+import re
+
+# third-party imports
+import pytest
+import sqlparse
+
+# local imports
+from cic_cache.db.models.base import SessionBase
+from cic_cache.db import dsn_from_config
+
+logg = logging.getLogger(__file__)
+
+
+@pytest.fixture(scope='function')
+def database_engine(
+    load_config,
+        ):
+    if load_config.get('DATABASE_ENGINE') == 'sqlite':
+        SessionBase.transactional = False
+        SessionBase.poolable = False
+        try:
+            os.unlink(load_config.get('DATABASE_NAME'))
+        except FileNotFoundError:
+            pass
+    dsn = dsn_from_config(load_config)
+    SessionBase.connect(dsn)
+    return dsn
+
+
+# TODO: use alembic instead to migrate db, here we have to keep separate schema than migration script in script/migrate.py
+@pytest.fixture(scope='function')
+def init_database(
+        load_config,
+        database_engine,
+        ):
+
+    rootdir = os.path.dirname(os.path.dirname(__file__))
+    schemadir = os.path.join(rootdir, 'db', load_config.get('DATABASE_DRIVER'))
+
+    if load_config.get('DATABASE_ENGINE') == 'sqlite':
+        rconn = SessionBase.engine.raw_connection()
+        f = open(os.path.join(schemadir, 'db.sql'))
+        s = f.read()
+        f.close()
+        rconn.executescript(s)
+
+    else:
+        rconn = SessionBase.engine.raw_connection()
+        rcursor = rconn.cursor()
+
+        #rcursor.execute('DROP FUNCTION IF EXISTS public.transaction_list')
+        #rcursor.execute('DROP FUNCTION IF EXISTS public.balances')
+
+        f = open(os.path.join(schemadir, 'db.sql'))
+        s = f.read()
+        f.close()
+        r = re.compile(r'^[A-Z]', re.MULTILINE)
+        for l in sqlparse.parse(s):
+            strl = str(l)
+            # we need to check for empty query lines, as sqlparse doesn't do that on its own (and psycopg complains when it gets them)
+            if not re.search(r, strl):
+                logg.warning('skipping parsed query line {}'.format(strl))
+                continue
+            rcursor.execute(strl)
+        rconn.commit()
+
+        rcursor.execute('SET search_path TO public')
+
+# this doesn't work when run separately, no idea why
+# functions have been manually added to original schema from cic-eth 
+#        f = open(os.path.join(schemadir, 'proc_transaction_list.sql'))
+#        s = f.read()
+#        f.close()
+#        rcursor.execute(s)
+# 
+#        f = open(os.path.join(schemadir, 'proc_balances.sql'))
+#        s = f.read()
+#        f.close()
+#        rcursor.execute(s)
+
+        rcursor.close()
+
+    session = SessionBase.create_session()
+    yield session
+    session.commit()
+    session.close()
+
+
+@pytest.fixture(scope='function')
+def list_tokens(
+        ):
+    return {
+            'foo': '0x' + os.urandom(20).hex(),
+            'bar': '0x' + os.urandom(20).hex(),
+        }
+
+
+@pytest.fixture(scope='function')
+def list_actors(
+        ):
+    return {
+            'alice': '0x' + os.urandom(20).hex(),
+            'bob': '0x' + os.urandom(20).hex(),
+            'charlie': '0x' + os.urandom(20).hex(),
+            'diane': '0x' + os.urandom(20).hex(),
+            }
+
+
+@pytest.fixture(scope='function')
+def list_defaults(
+        ):
+
+    return {
+        'block': 420000,
+    }

apps/cic-cache/tests/test_cache.py

@@ -0,0 +1,35 @@
+# standard imports
+import os
+import datetime
+import logging
+import json
+
+# third-party imports
+import pytest
+
+# local imports
+from cic_cache import BloomCache
+
+logg = logging.getLogger()
+
+
+def test_cache(
+        init_database,
+        list_defaults,
+        list_actors,
+        list_tokens,
+        txs,
+        ):
+
+    session = init_database
+
+    c = BloomCache(session)
+    b = c.load_transactions(0, 100)
+
+    assert b[0] == list_defaults['block'] - 1
+
+    c = BloomCache(session)
+    c.load_transactions_account(list_actors['alice'],0, 100)
+
+    assert b[0] == list_defaults['block'] - 1
+

apps/cic-cache/tests/test_task.py

@@ -0,0 +1,27 @@
+# standard imports
+import logging
+
+# third-party imports
+import celery
+
+# local imports
+from cic_cache.api import Api
+
+logg = logging.getLogger()
+
+
+def test_task(
+        init_database,
+        list_defaults,
+        list_actors,
+        list_tokens,
+        txs,
+        celery_session_worker,
+        ):
+
+    api = Api(queue=None)
+    t = api.list(0, 100)
+    r = t.get()
+    logg.debug('r {}'.format(r))
+
+    assert r['low'] == list_defaults['block'] - 1

apps/cic-eth/cic_eth/admin/ctrl.py

@@ -8,13 +8,17 @@ from cic_registry import zero_address
 
 # local imports
 from cic_eth.db.enum import LockEnum
+from cic_eth.db.models.base import SessionBase
 from cic_eth.db.models.lock import Lock
+from cic_eth.task import (
+        CriticalSQLAlchemyTask,
+        )
 from cic_eth.error import LockedError
 
 celery_app = celery.current_app
 logg = logging.getLogger()
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def lock(chained_input, chain_str, address=zero_address, flags=LockEnum.ALL, tx_hash=None):
     """Task wrapper to set arbitrary locks
 
@@ -32,7 +36,7 @@ def lock(chained_input, chain_str, address=zero_address, flags=LockEnum.ALL, tx_
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def unlock(chained_input, chain_str, address=zero_address, flags=LockEnum.ALL):
     """Task wrapper to reset arbitrary locks
 
@@ -50,7 +54,7 @@ def unlock(chained_input, chain_str, address=zero_address, flags=LockEnum.ALL):
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def lock_send(chained_input, chain_str, address=zero_address, tx_hash=None):
     """Task wrapper to set send lock
 
@@ -66,7 +70,7 @@ def lock_send(chained_input, chain_str, address=zero_address, tx_hash=None):
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def unlock_send(chained_input, chain_str, address=zero_address):
     """Task wrapper to reset send lock
 
@@ -82,7 +86,7 @@ def unlock_send(chained_input, chain_str, address=zero_address):
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def lock_queue(chained_input, chain_str, address=zero_address, tx_hash=None):
     """Task wrapper to set queue direct lock
 
@@ -98,7 +102,7 @@ def lock_queue(chained_input, chain_str, address=zero_address, tx_hash=None):
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def unlock_queue(chained_input, chain_str, address=zero_address):
     """Task wrapper to reset queue direct lock
 
@@ -114,11 +118,12 @@ def unlock_queue(chained_input, chain_str, address=zero_address):
     return chained_input
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def check_lock(chained_input, chain_str, lock_flags, address=None):
-    r = Lock.check(chain_str, lock_flags, address=zero_address)
+    session = SessionBase.create_session()
+    r = Lock.check(chain_str, lock_flags, address=zero_address, session=session)
     if address != None:
-        r |= Lock.check(chain_str, lock_flags, address=address)
+        r |= Lock.check(chain_str, lock_flags, address=address, session=session)
     if r > 0:
         logg.debug('lock check {} has match {} for {}'.format(lock_flags, r, address))
         raise LockedError(r)

apps/cic-eth/cic_eth/admin/debug.py

@@ -1,12 +1,25 @@
+# standard imports
 import datetime
 
+# external imports
 import celery
 
+# local imports
+from cic_eth.db.models.debug import Debug
+from cic_eth.db.models.base import SessionBase
+from cic_eth.task import CriticalSQLAlchemyTask
+
 celery_app = celery.current_app
 
 
-@celery_app.task()
-def out_tmp(tag, txt):
-    f = open('/tmp/err.{}.txt'.format(tag), "w")
-    f.write(txt)
-    f.close()
+@celery_app.task(base=CriticalSQLAlchemyTask)
+def alert(chained_input, tag, txt):
+    session = SessionBase.create_session()
+
+    o = Debug(tag, txt)
+    session.add(o)
+    session.commit()
+
+    session.close()
+    
+    return chained_input

apps/cic-eth/cic_eth/api/api_admin.py

@@ -1,5 +1,6 @@
 # standard imports
 import logging
+import sys
 
 # third-party imports
 import celery
@@ -16,7 +17,10 @@ from cic_eth.db.models.role import AccountRole
 from cic_eth.db.models.otx import Otx
 from cic_eth.db.models.tx import TxCache
 from cic_eth.db.models.nonce import Nonce
-from cic_eth.db.enum import StatusEnum
+from cic_eth.db.enum import (
+        StatusEnum,
+        is_alive,
+    )
 from cic_eth.error import InitializationError
 from cic_eth.db.error import TxStateChangeError
 from cic_eth.eth.rpc import RpcClient
@@ -98,6 +102,19 @@ class AdminApi:
         session.close()
 
 
+    def have_account(self, address_hex, chain_str):
+        s_have = celery.signature(
+            'cic_eth.eth.account.have',
+            [
+                address_hex,
+                chain_str,
+                ],
+            queue=self.queue,
+            )
+        t = s_have.apply_async()
+        return t.get()
+
+
     def resend(self, tx_hash_hex, chain_str, in_place=True, unlock=False):
         logg.debug('resend {}'.format(tx_hash_hex))
         s_get_tx_cache = celery.signature(
@@ -110,24 +127,32 @@ class AdminApi:
 
         # TODO: This check should most likely be in resend task itself
         tx_dict = s_get_tx_cache.apply_async().get()
-        if tx_dict['status'] in [StatusEnum.REVERTED, StatusEnum.SUCCESS, StatusEnum.CANCELLED, StatusEnum.OBSOLETED]: 
+        #if tx_dict['status'] in [StatusEnum.REVERTED, StatusEnum.SUCCESS, StatusEnum.CANCELLED, StatusEnum.OBSOLETED]: 
+        if not is_alive(getattr(StatusEnum, tx_dict['status']).value):
             raise TxStateChangeError('Cannot resend mined or obsoleted transaction'.format(txold_hash_hex))
-
-        s = None
-        if in_place:
-            s = celery.signature(
-                'cic_eth.eth.tx.resend_with_higher_gas',
-                [
-                    tx_hash_hex,
-                    chain_str,
-                    None,
-                    1.01,
-                    ],
-                queue=self.queue,
-                )
-        else:
+        
+        if not in_place:
             raise NotImplementedError('resend as new not yet implemented')
 
+        s = celery.signature(
+            'cic_eth.eth.tx.resend_with_higher_gas',
+            [
+                chain_str,
+                None,
+                1.01,
+                ],
+            queue=self.queue,
+            )
+
+        s_manual = celery.signature(
+            'cic_eth.queue.tx.set_manual',
+            [
+                tx_hash_hex,
+                ],
+            queue=self.queue,
+            )
+        s_manual.link(s)
+
         if unlock:
             s_gas = celery.signature(
                 'cic_eth.admin.ctrl.unlock_send',
@@ -139,7 +164,7 @@ class AdminApi:
                 )
             s.link(s_gas)
 
-        return s.apply_async()
+        return s_manual.apply_async()
                         
     def check_nonce(self, address):
         s = celery.signature(
@@ -243,7 +268,9 @@ class AdminApi:
         """
         s = celery.signature(
                 'cic_eth.queue.tx.get_account_tx',
-                [address],
+                [
+                    address,
+                    ],
                 queue=self.queue,
                 )
         txs = s.apply_async().get()
@@ -291,6 +318,8 @@ class AdminApi:
         :return: Transaction details
         :rtype: dict
         """
+        problems = []
+
         if tx_hash != None and tx_raw != None:
             ValueError('Specify only one of hash or raw tx')
 
@@ -418,10 +447,12 @@ class AdminApi:
             r = c.w3.eth.getTransactionReceipt(tx_hash)
             if r.status == 1:
                 tx['network_status'] = 'Confirmed'
-                tx['block'] = r.blockNumber
-                tx['tx_index'] = r.transactionIndex
             else:
                 tx['network_status'] = 'Reverted'
+            tx['network_block_number'] = r.blockNumber
+            tx['network_tx_index'] = r.transactionIndex
+            if tx['block_number'] == None:
+                problems.append('Queue is missing block number {} for mined tx'.format(r.blockNumber))
         except web3.exceptions.TransactionNotFound:
             pass
 
@@ -431,6 +462,7 @@ class AdminApi:
         tx_unpacked = unpack_signed_raw_tx(bytes.fromhex(tx['signed_tx'][2:]), chain_spec.chain_id())
         tx['gas_price'] = tx_unpacked['gasPrice']
         tx['gas_limit'] = tx_unpacked['gas']
+        tx['data'] = tx_unpacked['data']
 
         s = celery.signature(
             'cic_eth.queue.tx.get_state_log',
@@ -442,4 +474,9 @@ class AdminApi:
         t = s.apply_async()
         tx['status_log'] = t.get()
 
+        if len(problems) > 0:
+            sys.stderr.write('\n')
+            for p in problems:
+                sys.stderr.write('!!!{}\n'.format(p))
+
         return tx

apps/cic-eth/cic_eth/api/api_task.py

@@ -6,10 +6,13 @@
 # standard imports
 import logging
 
-# third-party imports 
+# external imports 
 import celery
-from cic_registry.chain import ChainSpec
+#from cic_registry.chain import ChainSpec
 from cic_registry import CICRegistry
+from chainlib.chain import ChainSpec
+
+# local imports
 from cic_eth.eth.factory import TxFactory
 from cic_eth.db.enum import LockEnum
 
@@ -30,7 +33,7 @@ class Api:
     :param queue: Name of worker queue to submit tasks to
     :type queue: str
     """
-    def __init__(self, chain_str, queue='cic-eth', callback_param=None, callback_task='cic_eth.callbacks.noop', callback_queue=None):
+    def __init__(self, chain_str, queue='cic-eth', callback_param=None, callback_task='cic_eth.callbacks.noop.noop', callback_queue=None):
         self.chain_str = chain_str
         self.chain_spec = ChainSpec.from_chain_str(chain_str)
         self.callback_param = callback_param
@@ -79,6 +82,7 @@ class Api:
         :returns: uuid of root task
         :rtype: celery.Task
         """
+        raise NotImplementedError('out of service until new DEX migration is done')
         s_check = celery.signature(
                 'cic_eth.admin.ctrl.check_lock',
                 [
@@ -89,6 +93,11 @@ class Api:
                     ],
                 queue=self.queue,
                 )
+        s_nonce = celery.signature(
+                'cic_eth.eth.tx.reserve_nonce',
+                [],
+                queue=self.queue,
+                )
         s_tokens = celery.signature(
                 'cic_eth.eth.token.resolve_tokens_by_symbol',
                 [
@@ -107,7 +116,8 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-        s_check.link(s_tokens)
+        s_nonce.link(s_tokens)
+        s_check.link(s_nonce)
         if self.callback_param != None:
             s_convert.link(self.callback_success)
             s_tokens.link(s_convert).on_error(self.callback_error)
@@ -134,6 +144,7 @@ class Api:
         :returns: uuid of root task
         :rtype: celery.Task
         """
+        raise NotImplementedError('out of service until new DEX migration is done')
         s_check = celery.signature(
                 'cic_eth.admin.ctrl.check_lock',
                 [
@@ -144,6 +155,11 @@ class Api:
                     ],
                 queue=self.queue,
                 )
+        s_nonce = celery.signature(
+                'cic_eth.eth.tx.reserve_nonce',
+                [],
+                queue=self.queue,
+                )
         s_tokens = celery.signature(
                 'cic_eth.eth.token.resolve_tokens_by_symbol',
                 [
@@ -162,7 +178,8 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-        s_check.link(s_tokens)
+        s_nonce.link(s_tokens)
+        s_check.link(s_nonce)
         if self.callback_param != None:
             s_convert.link(self.callback_success)
             s_tokens.link(s_convert).on_error(self.callback_error)
@@ -197,6 +214,13 @@ class Api:
                     ],
                 queue=self.queue,
                 )
+        s_nonce = celery.signature(
+                'cic_eth.eth.tx.reserve_nonce',
+                [
+                    from_address,
+                    ],
+                queue=self.queue,
+                )
         s_tokens = celery.signature(
                 'cic_eth.eth.token.resolve_tokens_by_symbol',
                 [
@@ -214,7 +238,8 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-        s_check.link(s_tokens)
+        s_nonce.link(s_tokens)
+        s_check.link(s_nonce)
         if self.callback_param != None:
             s_transfer.link(self.callback_success)
             s_tokens.link(s_transfer).on_error(self.callback_error)
@@ -225,89 +250,15 @@ class Api:
         return t
 
 
-    def transfer_request(self, from_address, to_address, spender_address, value, token_symbol):
-        """Executes a chain of celery tasks that issues a transfer request of ERC20 tokens from one address to another.
-
-        :param from_address: Ethereum address of sender
-        :type from_address: str, 0x-hex
-        :param to_address: Ethereum address of recipient
-        :type to_address: str, 0x-hex
-        :param spender_address: Ethereum address that is executing transfer (typically an escrow contract)
-        :type spender_address: str, 0x-hex
-        :param value: Estimated return from conversion
-        :type  value: int
-        :param token_symbol: ERC20 token symbol of token to send
-        :type token_symbol: str
-        :returns: uuid of root task
-        :rtype: celery.Task
-        """
-        s_check = celery.signature(
-                'cic_eth.admin.ctrl.check_lock',
-                [
-                    [token_symbol],
-                    self.chain_str,
-                    LockEnum.QUEUE,
-                    from_address,
-                    ],
-                queue=self.queue,
-                )
-        s_tokens_transfer_approval = celery.signature(
-                'cic_eth.eth.token.resolve_tokens_by_symbol',
-                [
-                    self.chain_str,
-                    ],
-                queue=self.queue,
-                )
-        s_tokens_approve = celery.signature(
-                'cic_eth.eth.token.resolve_tokens_by_symbol',
-                [
-                    self.chain_str,
-                    ],
-                queue=self.queue,
-                )
-        s_approve = celery.signature(
-                'cic_eth.eth.token.approve',
-                [
-                    from_address,
-                    spender_address,
-                    value,
-                    self.chain_str,
-                    ],
-                queue=self.queue,
-                )
-        s_transfer_approval = celery.signature(
-                'cic_eth.eth.request.transfer_approval_request',
-                [
-                    from_address,
-                    to_address,
-                    value,
-                    self.chain_str,
-                    ],
-                queue=self.queue,
-                )
-        # TODO: make approve and transfer_approval chainable so callback can be part of the full chain
-        if self.callback_param != None:
-            s_transfer_approval.link(self.callback_success)
-            s_tokens_approve.link(s_approve)
-            s_tokens_transfer_approval.link(s_transfer_approval).on_error(self.callback_error)
-        else:
-            s_tokens_approve.link(s_approve)
-            s_tokens_transfer_approval.link(s_transfer_approval)
-
-        g = celery.group(s_tokens_approve, s_tokens_transfer_approval) #s_tokens.apply_async(queue=self.queue)
-        s_check.link(g)
-        t = s_check.apply_async()
-        #t = s_tokens.apply_async(queue=self.queue)
-        return t
-
-
-    def balance(self, address, token_symbol):
+    def balance(self, address, token_symbol, include_pending=True):
         """Calls the provided callback with the current token balance of the given address.
 
         :param address: Ethereum address of holder
         :type address: str, 0x-hex
         :param token_symbol: ERC20 token symbol of token to send
         :type token_symbol: str
+        :param include_pending: If set, will include transactions that have not yet been fully processed
+        :type include_pending: bool
         :returns: uuid of root task
         :rtype: celery.Task
         """
@@ -330,14 +281,45 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-        
-        if self.callback_param != None:
-            s_balance.link(self.callback_success)
-            s_tokens.link(s_balance).on_error(self.callback_error)
-        else:
-            s_tokens.link(s_balance)
+        s_result = celery.signature(
+                'cic_eth.queue.balance.assemble_balances',
+                [],
+                queue=self.queue,
+                )
 
-        t = s_tokens.apply_async(queue=self.queue)
+        last_in_chain = s_balance
+        if include_pending:
+            s_balance_incoming = celery.signature(
+                    'cic_eth.queue.balance.balance_incoming',
+                    [
+                        address,
+                        self.chain_str,
+                        ],
+                    queue=self.queue,
+                    )
+            s_balance_outgoing = celery.signature(
+                    'cic_eth.queue.balance.balance_outgoing',
+                    [
+                        address,
+                        self.chain_str,
+                        ],
+                    queue=self.queue,
+                    )
+            s_balance.link(s_balance_incoming)
+            s_balance_incoming.link(s_balance_outgoing)
+            last_in_chain = s_balance_outgoing
+
+        one = celery.chain(s_tokens, s_balance)
+        two = celery.chain(s_tokens, s_balance_incoming)
+        three = celery.chain(s_tokens, s_balance_outgoing)
+
+        t = None
+        if self.callback_param != None:
+            s_result.link(self.callback_success).on_error(self.callback_error)
+            t = celery.chord([one, two, three])(s_result)
+        else:
+            t = celery.chord([one, two, three])(s_result)
+    
         return t
 
 
@@ -372,6 +354,13 @@ class Api:
             s_account.link(self.callback_success)
 
         if register:
+            s_nonce = celery.signature(
+                'cic_eth.eth.tx.reserve_nonce',
+                [
+                    'ACCOUNTS_INDEX_WRITER',
+                    ],
+                queue=self.queue,
+                )
             s_register = celery.signature(
                 'cic_eth.eth.account.register', 
                 [
@@ -379,7 +368,8 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-            s_account.link(s_register)
+            s_nonce.link(s_register)
+            s_account.link(s_nonce)
 
         t = s_check.apply_async(queue=self.queue)
         return t
@@ -402,6 +392,13 @@ class Api:
                     ],
                 queue=self.queue,
                 )
+        s_nonce = celery.signature(
+                'cic_eth.eth.tx.reserve_nonce',
+                [
+                    'GAS_GIFTER',
+                    ],
+                queue=self.queue,
+                )
         s_refill = celery.signature(
                 'cic_eth.eth.tx.refill_gas',
                 [
@@ -409,7 +406,8 @@ class Api:
                     ],
                 queue=self.queue,
                 )
-        s_check.link(s_refill) 
+        s_nonce.link(s_refill) 
+        s_check.link(s_nonce)
         if self.callback_param != None:
             s_refill.link(self.callback_success)
 
@@ -417,6 +415,73 @@ class Api:
         return t
 
 
+    def list(self, address, limit=10, external_task=None, external_queue=None):
+        """Retrieve an aggregate list of latest transactions of internal and (optionally) external origin in reverse chronological order.
+
+        The array of transactions returned have the same dict layout as those passed by the callback filter in cic_eth/runnable/manager
+
+        If the external task is defined, this task will be used to query external transactions. If this is not defined, no external transactions will be included. The task must accept (offset, limit, address) as input parameters, and return a bloom filter that will be used to retrieve transaction data for the matching transactions. See cic_eth.ext.tx.list_tx_by_bloom for details on the bloom filter dat format.
+
+        :param address: Ethereum address to list transactions for
+        :type address: str, 0x-hex
+        :param limit: Amount of results to return
+        :type limit: number
+        :param external_task: Celery task providing external transactions
+        :type external_task: str
+        :param external_queue: Celery task queue providing exernal transactions task
+        :type external_queue: str
+        :returns: List of transactions
+        :rtype: list of dict
+        """
+        offset = 0
+        s_local = celery.signature(
+            'cic_eth.queue.tx.get_account_tx',
+            [
+                address,
+                ],
+            queue=self.queue,
+            )
+
+        s_brief = celery.signature(
+            'cic_eth.ext.tx.tx_collate',
+            [
+                self.chain_str,
+                offset,
+                limit
+                ],
+            queue=self.queue,
+            )
+        s_local.link(s_brief)
+        if self.callback_param != None:
+            s_brief.link(self.callback_success).on_error(self.callback_error)
+
+        t = None
+        if external_task != None:
+            s_external_get = celery.signature(
+                external_task,
+                [
+                    address,
+                    offset,
+                    limit,
+                    ],
+                queue=external_queue,
+                )
+
+            s_external_process = celery.signature(
+                'cic_eth.ext.tx.list_tx_by_bloom',
+                [
+                    address,
+                    self.chain_str,
+                    ],
+                queue=self.queue,
+                    )
+            c = celery.chain(s_external_get, s_external_process)
+            t = celery.chord([s_local, c])(s_brief)
+        else:
+            t = s_local.apply_async(queue=self.queue)
+
+        return t
+
     def ping(self, r):
         """A noop callback ping for testing purposes.
 

apps/cic-eth/cic_eth/callbacks/noop.py

@@ -18,4 +18,4 @@ def noop(self, result, param, status_code):
     :rtype: bool
     """
     logg.info('noop callback {} {} {}'.format(result, param, status_code))
-    return True
+    return result

apps/cic-eth/cic_eth/callbacks/redis.py

@@ -18,7 +18,11 @@ logg = celery_app.log.get_default_logger()
 def redis(self, result, destination, status_code):
     (host, port, db, channel) = destination.split(':')
     r = redis_interface.Redis(host=host, port=port, db=db)
-    s = json.dumps(result)
+    data = {
+            'root_id': self.request.root_id,
+            'status': status_code,
+            'result': result,
+            }
     logg.debug('redis callback on host {} port {} db {} channel {}'.format(host, port, db, channel))
-    r.publish(channel, s)
+    r.publish(channel, json.dumps(data))
     r.close()

apps/cic-eth/cic_eth/callbacks/tcp.py

@@ -20,5 +20,10 @@ def tcp(self, result, destination, status_code):
     (host, port) = destination.split(':')
     logg.debug('tcp callback to {} {}'.format(host, port))
     s.connect((host, int(port)))
-    s.send(json.dumps(result).encode('utf-8'))
+    data = {
+            'root_id': self.request.root_id,
+            'status': status_code,
+            'result': result,
+            }
+    s.send(json.dumps(data).encode('utf-8'))
     s.close()

apps/cic-eth/cic_eth/db/enum.py

@@ -1,6 +1,29 @@
 # standard imports
 import enum
 
+
+@enum.unique
+class StatusBits(enum.IntEnum):
+    """Individual bit flags that are combined to define the state and legacy of a queued transaction
+
+    """
+    QUEUED = 0x01 # transaction should be sent to network
+    IN_NETWORK = 0x08 # transaction is in network
+   
+    DEFERRED = 0x10 # an attempt to send the transaction to network has failed
+    GAS_ISSUES = 0x20 # transaction is pending sender account gas funding
+
+    LOCAL_ERROR = 0x100 # errors that originate internally from the component
+    NODE_ERROR = 0x200 # errors originating in the node (invalid RLP input...)
+    NETWORK_ERROR = 0x400 # errors that originate from the network (REVERT)
+    UNKNOWN_ERROR = 0x800 # unclassified errors (the should not occur)
+
+    FINAL = 0x1000 # transaction processing has completed
+    OBSOLETE = 0x2000 # transaction has been replaced by a different transaction with higher fee
+    MANUAL = 0x8000 # transaction processing has been manually overridden
+
+
+@enum.unique
 class StatusEnum(enum.IntEnum):
     """
 
@@ -22,21 +45,27 @@ class StatusEnum(enum.IntEnum):
         * SUCCESS: THe transaction was successfully mined. (Block number will be set)
 
     """
-    PENDING=-9
-    SENDFAIL=-8
-    RETRY=-7
-    READYSEND=-6
-    OBSOLETED=-2
-    WAITFORGAS=-1
-    SENT=0
-    FUBAR=1
-    CANCELLED=2
-    OVERRIDDEN=3
-    REJECTED=7
-    REVERTED=8
-    SUCCESS=9
+    PENDING = 0
+
+    SENDFAIL = StatusBits.DEFERRED | StatusBits.LOCAL_ERROR
+    RETRY = StatusBits.QUEUED | StatusBits.DEFERRED 
+    READYSEND = StatusBits.QUEUED
+
+    OBSOLETED = StatusBits.OBSOLETE | StatusBits.IN_NETWORK
+
+    WAITFORGAS = StatusBits.GAS_ISSUES
+
+    SENT = StatusBits.IN_NETWORK
+    FUBAR = StatusBits.FINAL | StatusBits.UNKNOWN_ERROR
+    CANCELLED = StatusBits.IN_NETWORK | StatusBits.FINAL | StatusBits.OBSOLETE
+    OVERRIDDEN = StatusBits.FINAL | StatusBits.OBSOLETE | StatusBits.MANUAL
+
+    REJECTED = StatusBits.NODE_ERROR | StatusBits.FINAL
+    REVERTED = StatusBits.IN_NETWORK | StatusBits.FINAL | StatusBits.NETWORK_ERROR
+    SUCCESS = StatusBits.IN_NETWORK | StatusBits.FINAL 
 
 
+@enum.unique
 class LockEnum(enum.IntEnum):
     """
     STICKY: When set, reset is not possible
@@ -48,4 +77,81 @@ class LockEnum(enum.IntEnum):
     CREATE=2
     SEND=4
     QUEUE=8
+    QUERY=16
     ALL=int(0xfffffffffffffffe)
+
+
+def status_str(v, bits_only=False):
+    """Render a human-readable string describing the status
+
+    If the bit field exactly matches a StatusEnum value, the StatusEnum label will be returned.
+
+    If a StatusEnum cannot be matched, the string will be postfixed with "*", unless explicitly instructed to return bit field labels only.
+
+    :param v: Status bit field
+    :type v: number
+    :param bits_only: Only render individual bit labels.
+    :type bits_only: bool
+    :returns: Status string
+    :rtype: str
+    """
+    s = ''
+    if not bits_only:
+        try:
+            s = StatusEnum(v).name
+            return s
+        except ValueError:
+            pass
+
+    if v == 0:
+        return 'NONE'
+
+    for i in range(16):
+        b = (1 << i)
+        if (b & 0xffff) & v:
+            n = StatusBits(b).name
+            if len(s) > 0:
+                s += ','
+            s += n
+    if not bits_only:
+        s += '*'
+    return s
+
+
+def all_errors():
+    """Bit mask of all error states
+
+    :returns: Error flags
+    :rtype: number
+    """
+    return StatusBits.LOCAL_ERROR | StatusBits.NODE_ERROR | StatusBits.NETWORK_ERROR | StatusBits.UNKNOWN_ERROR
+
+
+def is_error_status(v):
+    """Check if value is an error state
+
+    :param v: Status bit field
+    :type v: number
+    :returns: True if error
+    :rtype: bool
+    """
+    return bool(v & all_errors())
+
+
+def dead():
+    """Bit mask defining whether a transaction is still likely to be processed on the network.
+
+    :returns: Bit mask
+    :rtype: number
+    """
+    return StatusBits.FINAL | StatusBits.OBSOLETE
+
+
+def is_alive(v):
+    """Check if transaction is still likely to be processed on the network.
+
+    The contingency of "likely" refers to the case a transaction has been obsoleted after sent to the network, but the network still confirms the obsoleted transaction. The return value of this method will not change as a result of this, BUT the state itself will (as the FINAL bit will be set).
+
+    :returns: 
+    """
+    return bool(v & dead() == 0)

apps/cic-eth/cic_eth/db/migrations/default/versions/3b693afd526a_nonce_reservation.py

@@ -0,0 +1,30 @@
+"""Nonce reservation
+
+Revision ID: 3b693afd526a
+Revises: f738d9962fdf
+Create Date: 2021-03-05 07:09:50.898728
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '3b693afd526a'
+down_revision = 'f738d9962fdf'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+            'nonce_task_reservation',
+        sa.Column('id', sa.Integer, primary_key=True),
+        sa.Column('nonce', sa.Integer, nullable=False),
+        sa.Column('key', sa.String, nullable=False),
+        sa.Column('date_created', sa.DateTime, nullable=False),
+        )
+
+
+def downgrade():
+    op.drop_table('nonce_task_reservation')

apps/cic-eth/cic_eth/db/migrations/default/versions/e3b5330ee71c_.py

@@ -27,8 +27,8 @@ def upgrade():
             sa.Column('destination_token_address', sa.String(42), nullable=False),
             sa.Column('sender', sa.String(42), nullable=False),
             sa.Column('recipient', sa.String(42), nullable=False),
-            sa.Column('from_value', sa.String(), nullable=False),
-            sa.Column('to_value', sa.String(), nullable=True),
+            sa.Column('from_value', sa.NUMERIC(), nullable=False),
+            sa.Column('to_value', sa.NUMERIC(), nullable=True),
             sa.Column('block_number', sa.BIGINT(), nullable=True),
             sa.Column('tx_index', sa.Integer, nullable=True),
             )

apps/cic-eth/cic_eth/db/migrations/default/versions/ec40ac0974c1_add_chain_syncer.py

@@ -0,0 +1,28 @@
+"""Add chain syncer
+
+Revision ID: ec40ac0974c1
+Revises: 6ac7a1dadc46
+Create Date: 2021-02-23 06:10:19.246304
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from chainsyncer.db.migrations.sqlalchemy import (
+        chainsyncer_upgrade,
+        chainsyncer_downgrade,
+        )
+
+
+# revision identifiers, used by Alembic.
+revision = 'ec40ac0974c1'
+down_revision = '6ac7a1dadc46'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    chainsyncer_upgrade(0, 0, 1)
+
+
+def downgrade():
+    chainsyncer_downgrade(0, 0, 1)

apps/cic-eth/cic_eth/db/migrations/default/versions/f738d9962fdf_debug_output.py

@@ -0,0 +1,32 @@
+"""debug output
+
+Revision ID: f738d9962fdf
+Revises: ec40ac0974c1
+Create Date: 2021-03-04 08:32:43.281214
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'f738d9962fdf'
+down_revision = 'ec40ac0974c1'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+            'debug',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('tag', sa.String, nullable=False),
+            sa.Column('description', sa.String, nullable=False),
+            sa.Column('date_created', sa.DateTime, nullable=False),
+            )
+    pass
+
+
+def downgrade():
+    op.drop_table('debug')
+    pass

apps/cic-eth/cic_eth/db/migrations/postgresql/versions/3b693afd526a_nonce_reservation.py

@@ -0,0 +1,30 @@
+"""Nonce reservation
+
+Revision ID: 3b693afd526a
+Revises: f738d9962fdf
+Create Date: 2021-03-05 07:09:50.898728
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '3b693afd526a'
+down_revision = 'f738d9962fdf'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+            'nonce_task_reservation',
+        sa.Column('id', sa.Integer, primary_key=True),
+        sa.Column('nonce', sa.Integer, nullable=False),
+        sa.Column('key', sa.String, nullable=False),
+        sa.Column('date_created', sa.DateTime, nullable=False),
+        )
+
+
+def downgrade():
+    op.drop_table('nonce_task_reservation')

apps/cic-eth/cic_eth/db/migrations/postgresql/versions/e3b5330ee71c_.py

@@ -19,7 +19,6 @@ def upgrade():
     op.create_table(
             'tx_cache',
             sa.Column('id', sa.Integer, primary_key=True),
-#            sa.Column('tx_id', sa.Integer, sa.ForeignKey('tx.id'), nullable=True),
             sa.Column('otx_id', sa.Integer, sa.ForeignKey('otx.id'), nullable=True),
             sa.Column('date_created', sa.DateTime, nullable=False),
             sa.Column('date_updated', sa.DateTime, nullable=False),
@@ -27,8 +26,8 @@ def upgrade():
             sa.Column('destination_token_address', sa.String(42), nullable=False),
             sa.Column('sender', sa.String(42), nullable=False),
             sa.Column('recipient', sa.String(42), nullable=False),
-            sa.Column('from_value', sa.BIGINT(), nullable=False),
-            sa.Column('to_value', sa.BIGINT(), nullable=True),
+            sa.Column('from_value', sa.NUMERIC(), nullable=False),
+            sa.Column('to_value', sa.NUMERIC(), nullable=True),
             sa.Column('block_number', sa.BIGINT(), nullable=True),
             sa.Column('tx_index', sa.Integer, nullable=True),
             )

apps/cic-eth/cic_eth/db/migrations/postgresql/versions/ec40ac0974c1_add_chain_syncer.py

@@ -0,0 +1,28 @@
+"""Add chain syncer
+
+Revision ID: ec40ac0974c1
+Revises: 6ac7a1dadc46
+Create Date: 2021-02-23 06:10:19.246304
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from chainsyncer.db.migrations.sqlalchemy import (
+        chainsyncer_upgrade,
+        chainsyncer_downgrade,
+        )
+
+
+# revision identifiers, used by Alembic.
+revision = 'ec40ac0974c1'
+down_revision = '6ac7a1dadc46'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    chainsyncer_upgrade(0, 0, 1)
+
+
+def downgrade():
+    chainsyncer_downgrade(0, 0, 1)

apps/cic-eth/cic_eth/db/migrations/postgresql/versions/f738d9962fdf_debug_output.py

@@ -0,0 +1,32 @@
+"""debug output
+
+Revision ID: f738d9962fdf
+Revises: ec40ac0974c1
+Create Date: 2021-03-04 08:32:43.281214
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'f738d9962fdf'
+down_revision = 'ec40ac0974c1'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+            'debug',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('tag', sa.String, nullable=False),
+            sa.Column('description', sa.String, nullable=False),
+            sa.Column('date_created', sa.DateTime, nullable=False),
+            )
+    pass
+
+
+def downgrade():
+    op.drop_table('debug')
+    pass

apps/cic-eth/cic_eth/db/models/base.py

@@ -1,8 +1,18 @@
+# stanard imports
+import logging
+
 # third-party imports
 from sqlalchemy import Column, Integer
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import (
+        StaticPool,
+        QueuePool,
+        AssertionPool,
+        )
+
+logg = logging.getLogger()
 
 Model = declarative_base(name='Model')
 
@@ -21,7 +31,11 @@ class SessionBase(Model):
     transactional = True
     """Whether the database backend supports query transactions. Should be explicitly set by initialization code"""
     poolable = True
-    """Whether the database backend supports query transactions. Should be explicitly set by initialization code"""
+    """Whether the database backend supports connection pools. Should be explicitly set by initialization code"""
+    procedural = True
+    """Whether the database backend supports stored procedures"""
+    localsessions = {}
+    """Contains dictionary of sessions initiated by db model components"""
 
 
     @staticmethod
@@ -40,7 +54,7 @@ class SessionBase(Model):
 
 
     @staticmethod
-    def connect(dsn, debug=False):
+    def connect(dsn, pool_size=16, debug=False):
         """Create new database connection engine and connect to database backend.
 
         :param dsn: DSN string defining connection.
@@ -48,14 +62,28 @@ class SessionBase(Model):
         """
         e = None
         if SessionBase.poolable:
-            e = create_engine(
-                    dsn,
-                    max_overflow=50,
-                    pool_pre_ping=True,
-                    pool_size=20,
-                    pool_recycle=10,
-                    echo=debug,
-                )
+            poolclass = QueuePool
+            if pool_size > 1:
+                e = create_engine(
+                        dsn,
+                        max_overflow=pool_size*3,
+                        pool_pre_ping=True,
+                        pool_size=pool_size,
+                        pool_recycle=60,
+                        poolclass=poolclass,
+                        echo=debug,
+                    )
+            else:
+                if debug:
+                    poolclass = AssertionPool
+                else:
+                    poolclass = StaticPool
+
+                e = create_engine(
+                        dsn,
+                        poolclass=poolclass,
+                        echo=debug,
+                    )
         else:
             e = create_engine(
                     dsn,
@@ -71,3 +99,23 @@ class SessionBase(Model):
         """
         SessionBase.engine.dispose()
         SessionBase.engine = None
+
+
+    @staticmethod
+    def bind_session(session=None):
+        localsession = session
+        if localsession == None:
+            localsession = SessionBase.create_session()
+            localsession_key = str(id(localsession))
+            logg.debug('creating new session {}'.format(localsession_key))
+            SessionBase.localsessions[localsession_key] = localsession
+        return localsession
+
+
+    @staticmethod
+    def release_session(session=None):
+        session_key = str(id(session))
+        if SessionBase.localsessions.get(session_key) != None:
+            logg.debug('destroying session {}'.format(session_key))
+            session.commit()
+            session.close()

apps/cic-eth/cic_eth/db/models/debug.py

@@ -0,0 +1,23 @@
+# standard imports
+import datetime
+import logging
+
+# external imports
+from sqlalchemy import Column, String, DateTime
+
+# local imports
+from .base import SessionBase
+
+
+class Debug(SessionBase):
+
+    __tablename__ = 'debug'
+
+    date_created = Column(DateTime, default=datetime.datetime.utcnow)
+    tag = Column(String)
+    description = Column(String)
+
+
+    def __init__(self, tag, description):
+        self.tag = tag
+        self.description = description

apps/cic-eth/cic_eth/db/models/lock.py

@@ -55,11 +55,9 @@ class Lock(SessionBase):
         :returns: New flag state of entry
         :rtype: number
         """
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+        session = SessionBase.bind_session(session)
 
-        q = localsession.query(Lock)
+        q = session.query(Lock)
         #q = q.join(TxCache, isouter=True)
         q = q.filter(Lock.address==address)
         q = q.filter(Lock.blockchain==chain_str)
@@ -71,7 +69,8 @@ class Lock(SessionBase):
             lock.address = address
             lock.blockchain = chain_str
             if tx_hash != None:
-                q = localsession.query(Otx)
+                session.flush()
+                q = session.query(Otx)
                 q = q.filter(Otx.tx_hash==tx_hash)
                 otx = q.first()
                 if otx != None:
@@ -80,12 +79,11 @@ class Lock(SessionBase):
         lock.flags |= flags
         r = lock.flags
 
-        localsession.add(lock)
-        localsession.commit()
+        session.add(lock)
+        session.commit()
+
+        SessionBase.release_session(session)
 
-        if session == None:
-            localsession.close()
-        
         return r
 
 
@@ -110,11 +108,9 @@ class Lock(SessionBase):
         :returns: New flag state of entry
         :rtype: number
         """
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+        session = SessionBase.bind_session(session)
 
-        q = localsession.query(Lock)
+        q = session.query(Lock)
         #q = q.join(TxCache, isouter=True)
         q = q.filter(Lock.address==address)
         q = q.filter(Lock.blockchain==chain_str)
@@ -124,14 +120,13 @@ class Lock(SessionBase):
         if lock != None:
             lock.flags &= ~flags
             if lock.flags == 0:
-                localsession.delete(lock)
+                session.delete(lock)
             else:
-                localsession.add(lock)
+                session.add(lock)
                 r = lock.flags
-            localsession.commit()
+            session.commit()
 
-        if session == None:
-            localsession.close()
+        SessionBase.release_session(session)
 
         return r
 
@@ -156,22 +151,20 @@ class Lock(SessionBase):
         :rtype: number
         """
 
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+        session = SessionBase.bind_session(session)
 
-        q = localsession.query(Lock)
+        q = session.query(Lock)
         #q = q.join(TxCache, isouter=True)
         q = q.filter(Lock.address==address)
         q = q.filter(Lock.blockchain==chain_str)
         q = q.filter(Lock.flags.op('&')(flags)==flags)
         lock = q.first()
-        if session == None:
-            localsession.close()
        
         r = 0
         if lock != None:
             r = lock.flags & flags
+
+        SessionBase.release_session(session)
         return r
 
 

apps/cic-eth/cic_eth/db/models/nonce.py

@@ -1,11 +1,16 @@
 # standard imports
 import logging
+import datetime
 
 # third-party imports
-from sqlalchemy import Column, String, Integer
+from sqlalchemy import Column, String, Integer, DateTime
 
 # local imports
 from .base import SessionBase
+from cic_eth.error import (
+        InitializationError,
+        IntegrityError,
+        )
 
 logg = logging.getLogger()
 
@@ -21,12 +26,9 @@ class Nonce(SessionBase):
 
     @staticmethod
     def get(address, session=None):
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+        session = SessionBase.bind_session(session)
 
-
-        q = localsession.query(Nonce)
+        q = session.query(Nonce)
         q = q.filter(Nonce.address_hex==address)
         nonce = q.first()
 
@@ -34,8 +36,7 @@ class Nonce(SessionBase):
         if nonce != None:
             nonce_value = nonce.nonce;
 
-        if session == None:
-            localsession.close()
+        SessionBase.release_session(session)
 
         return nonce_value
 
@@ -54,6 +55,28 @@ class Nonce(SessionBase):
         conn.execute("UPDATE nonce set nonce = {} WHERE address_hex = '{}'".format(nonce, address))
 
 
+    @staticmethod
+    def __init(conn, address, nonce):
+        conn.execute("INSERT INTO nonce (nonce, address_hex) VALUES ({}, '{}')".format(nonce, address))
+
+
+    @staticmethod
+    def init(address, nonce=0, session=None):
+        session = SessionBase.bind_session(session)
+
+        q = session.query(Nonce)
+        q = q.filter(Nonce.address_hex==address)
+        o = q.first()
+        if o != None:
+            session.flush()
+            raise InitializationError('nonce on {} already exists ({})'.format(address, o.nonce))
+        session.flush()
+        Nonce.__init(session, address, nonce)
+
+        SessionBase.release_session(session)
+
+
+    # TODO: Incrementing nonce MUST be done by separate tasks.
     @staticmethod
     def next(address, initial_if_not_exists=0):
         """Generate next nonce for the given address.
@@ -67,20 +90,96 @@ class Nonce(SessionBase):
         :returns: Nonce
         :rtype: number
         """
+        #session = SessionBase.bind_session(session)
+        
+        #session.begin_nested()
         conn = Nonce.engine.connect()
         if Nonce.transactional:
             conn.execute('BEGIN')
             conn.execute('LOCK TABLE nonce IN SHARE ROW EXCLUSIVE MODE')
+            logg.debug('locking nonce table for address {}'.format(address))
         nonce = Nonce.__get(conn, address)
         logg.debug('get nonce {} for address {}'.format(nonce, address))
         if nonce == None:
             nonce = initial_if_not_exists
-            conn.execute("INSERT INTO nonce (nonce, address_hex) VALUES ({}, '{}')".format(nonce, address))
             logg.debug('setting default nonce to {} for address {}'.format(nonce, address))
+            Nonce.__init(conn, address, nonce)
         Nonce.__set(conn, address, nonce+1)
         if Nonce.transactional:
             conn.execute('COMMIT')
+            logg.debug('unlocking nonce table for address {}'.format(address))
         conn.close()
+        #session.commit()
+
+        #SessionBase.release_session(session)
         return nonce
 
 
+class NonceReservation(SessionBase):
+
+    __tablename__ = 'nonce_task_reservation'
+
+    nonce = Column(Integer)
+    key = Column(String)
+    date_created = Column(DateTime, default=datetime.datetime.utcnow)
+
+
+    @staticmethod
+    def peek(key, session=None):
+        session = SessionBase.bind_session(session)
+
+        q = session.query(NonceReservation)
+        q = q.filter(NonceReservation.key==key)
+        o = q.first()
+
+        nonce = None
+        if o != None:
+            nonce = o.nonce
+
+        session.flush()
+
+        SessionBase.release_session(session)
+
+        return nonce
+
+
+    @staticmethod
+    def release(key, session=None):
+
+        session = SessionBase.bind_session(session)
+
+        nonce = NonceReservation.peek(key, session=session)
+
+        q = session.query(NonceReservation)
+        q = q.filter(NonceReservation.key==key)
+        o = q.first()
+
+        if o == None:
+            raise IntegrityError('nonce for key {}'.format(nonce))
+            SessionBase.release_session(session)
+
+        session.delete(o)
+        session.flush()
+
+        SessionBase.release_session(session)
+
+        return nonce
+
+
+    @staticmethod
+    def next(address, key, session=None):
+        session = SessionBase.bind_session(session)
+
+        if NonceReservation.peek(key, session) != None:
+            raise IntegrityError('nonce for key {}'.format(key))
+
+        nonce = Nonce.next(address)
+
+        o = NonceReservation()
+        o.nonce = nonce
+        o.key = key
+        session.add(o)
+       
+        SessionBase.release_session(session)
+
+        return nonce

apps/cic-eth/cic_eth/db/models/otx.py

@@ -2,13 +2,18 @@
 import datetime
 import logging
 
-# third-party imports
+# external imports
 from sqlalchemy import Column, Enum, String, Integer, DateTime, Text, or_, ForeignKey
 from sqlalchemy.ext.hybrid import hybrid_property, hybrid_method
 
 # local imports
 from .base import SessionBase
-from cic_eth.db.enum import StatusEnum
+from cic_eth.db.enum import (
+        StatusEnum,
+        StatusBits,
+        status_str,
+        is_error_status,
+        )
 from cic_eth.db.error import TxStateChangeError
 #from cic_eth.eth.util import address_hex_from_signed_tx
 
@@ -54,21 +59,31 @@ class Otx(SessionBase):
     block = Column(Integer)
 
 
-    def __set_status(self, status, session=None):
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+    def __set_status(self, status, session):
+        self.status |= status
+        session.add(self)
+        session.flush()
 
-        self.status = status
-        localsession.add(self)
-        localsession.flush()
 
-        if self.tracing:
-            self.__state_log(session=localsession)
+    def __reset_status(self, status, session):
+        status_edit = ~status & self.status
+        self.status &= status_edit
+        session.add(self)
+        session.flush()
+   
 
-        if session==None:
-            localsession.commit()
-            localsession.close()
+    def __status_already_set(self, status):
+        r = bool(self.status & status)
+        if r:
+            logg.warning('status bit {} already set on {}'.format(status.name, self.tx_hash))
+        return r
+
+
+    def __status_not_set(self, status):
+        r = not(self.status & status)
+        if r:
+            logg.warning('status bit {} not set on {}'.format(status.name, self.tx_hash))
+        return r
 
 
     def set_block(self, block, session=None):
@@ -102,9 +117,23 @@ class Otx(SessionBase):
 
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
-        if self.status >= StatusEnum.SENT.value:
-            raise TxStateChangeError('WAITFORGAS cannot succeed final state, had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.WAITFORGAS, session)
+        if self.__status_already_set(StatusBits.GAS_ISSUES):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('GAS_ISSUES cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('GAS_ISSUES cannot be set on an entry with IN_NETWORK state set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.GAS_ISSUES, session)
+        self.__reset_status(StatusBits.QUEUED | StatusBits.DEFERRED, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
 
     def fubar(self, session=None):
@@ -112,28 +141,89 @@ class Otx(SessionBase):
 
         Only manipulates object, does not transaction or commit to backend.
         """
-        self.__set_status(StatusEnum.FUBAR, session)
+        if self.__status_already_set(StatusBits.UNKNOWN_ERROR):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('FUBAR cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if is_error_status(self.status):
+            raise TxStateChangeError('FUBAR cannot be set on an entry with an error state already set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.UNKNOWN_ERROR | StatusBits.FINAL, session)
        
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
 
     def reject(self, session=None):
         """Marks transaction as "rejected," which means the node rejected sending the transaction to the network. The nonce has not been spent, and the transaction should be replaced.
 
         Only manipulates object, does not transaction or commit to backend.
         """
-        if self.status >= StatusEnum.SENT.value:
-            raise TxStateChangeError('REJECTED cannot succeed SENT or final state, had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.REJECTED, session)
-            
+        if self.__status_already_set(StatusBits.NODE_ERROR):
+            return
 
-    def override(self, session=None):
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('REJECTED cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('REJECTED cannot be set on an entry already IN_NETWORK ({})'.format(status_str(self.status)))
+        if is_error_status(self.status):
+            raise TxStateChangeError('REJECTED cannot be set on an entry with an error state already set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.NODE_ERROR | StatusBits.FINAL, session)
+            
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
+
+    def override(self, manual=False, session=None):
         """Marks transaction as manually overridden.
 
         Only manipulates object, does not transaction or commit to backend.
         """
-        if self.status >= StatusEnum.SENT.value:
-            raise TxStateChangeError('OVERRIDDEN cannot succeed SENT or final state, had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.OVERRIDDEN, session)
 
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('OVERRIDDEN/OBSOLETED cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('OVERRIDDEN/OBSOLETED cannot be set on an entry already IN_NETWORK ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.OBSOLETE:
+            raise TxStateChangeError('OVERRIDDEN/OBSOLETED cannot be set on an entry already OBSOLETE ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.OBSOLETE, session)
+        #if manual:
+        #    self.__set_status(StatusBits.MANUAL, session)
+        self.__reset_status(StatusBits.QUEUED | StatusBits.IN_NETWORK, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
+
+    def manual(self, session=None):
+
+        session = SessionBase.bind_session(session)
+
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('OVERRIDDEN/OBSOLETED cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.MANUAL, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
     def retry(self, session=None):
         """Marks transaction as ready to retry after a timeout following a sendfail or a completed gas funding.
@@ -142,9 +232,23 @@ class Otx(SessionBase):
 
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
-        if self.status != StatusEnum.SENT.value and self.status != StatusEnum.SENDFAIL.value:
-            raise TxStateChangeError('RETRY must follow SENT or SENDFAIL, but had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.RETRY, session)
+        if self.__status_already_set(StatusBits.QUEUED):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('RETRY cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if not is_error_status(self.status) and not StatusBits.IN_NETWORK & self.status > 0:
+            raise TxStateChangeError('RETRY cannot be set on an entry that has no error ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.QUEUED, session)
+        self.__reset_status(StatusBits.GAS_ISSUES, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
 
     def readysend(self, session=None):
@@ -154,9 +258,23 @@ class Otx(SessionBase):
 
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
-        if self.status != StatusEnum.PENDING.value and self.status != StatusEnum.WAITFORGAS.value:
-            raise TxStateChangeError('READYSEND must follow PENDING or WAITFORGAS, but had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.READYSEND, session)
+        if self.__status_already_set(StatusBits.QUEUED):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('READYSEND cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if is_error_status(self.status):
+            raise TxStateChangeError('READYSEND cannot be set on an errored state ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.QUEUED, session)
+        self.__reset_status(StatusBits.GAS_ISSUES, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
 
     def sent(self, session=None):
@@ -166,9 +284,21 @@ class Otx(SessionBase):
 
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
-        if self.status > StatusEnum.SENT:
-            raise TxStateChangeError('SENT after {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.SENT, session)
+        if self.__status_already_set(StatusBits.IN_NETWORK):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('SENT cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.IN_NETWORK, session)
+        self.__reset_status(StatusBits.DEFERRED | StatusBits.QUEUED | StatusBits.LOCAL_ERROR | StatusBits.NODE_ERROR, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
 
     def sendfail(self, session=None):
@@ -178,9 +308,49 @@ class Otx(SessionBase):
 
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
-        if self.status not in [StatusEnum.PENDING, StatusEnum.SENT, StatusEnum.WAITFORGAS]:
-            raise TxStateChangeError('SENDFAIL must follow SENT or PENDING, but had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.SENDFAIL, session)
+        if self.__status_already_set(StatusBits.NODE_ERROR):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('SENDFAIL cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('SENDFAIL cannot be set on an entry with IN_NETWORK state set ({})'.format(status_str(self.status)))
+
+        self.__set_status(StatusBits.LOCAL_ERROR | StatusBits.DEFERRED, session)
+        self.__reset_status(StatusBits.QUEUED | StatusBits.GAS_ISSUES, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
+
+    def dequeue(self, session=None):
+        """Marks that a process to execute send attempt is underway
+
+        Only manipulates object, does not transaction or commit to backend.
+
+        :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
+        """
+        if self.__status_not_set(StatusBits.QUEUED):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('SENDFAIL cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('SENDFAIL cannot be set on an entry with IN_NETWORK state set ({})'.format(status_str(self.status)))
+
+        self.__reset_status(StatusBits.QUEUED, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
 
 
     def minefail(self, block, session=None):
@@ -192,14 +362,25 @@ class Otx(SessionBase):
         :type block: number
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
+        if self.__status_already_set(StatusBits.NETWORK_ERROR):
+            return
+
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('REVERTED cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if not self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('REVERTED cannot be set on an entry without IN_NETWORK state set ({})'.format(status_str(self.status)))
+
         if block != None:
             self.block = block
-        if self.status != StatusEnum.SENT:
-            logg.warning('REVERTED should follow SENT, but had {}'.format(StatusEnum(self.status).name))
-        #if self.status != StatusEnum.PENDING and self.status != StatusEnum.OBSOLETED and self.status != StatusEnum.SENT:
-        #if self.status > StatusEnum.SENT:
-        #    raise TxStateChangeError('REVERTED must follow OBSOLETED, PENDING or SENT, but had {}'.format(StatusEnum(self.status).name))
-        self.__set_status(StatusEnum.REVERTED, session)
+
+        self.__set_status(StatusBits.NETWORK_ERROR | StatusBits.FINAL, session)
+
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
 
 
     def cancel(self, confirmed=False, session=None):
@@ -213,17 +394,23 @@ class Otx(SessionBase):
         :type confirmed: bool
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('CANCEL cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+
         if confirmed:
-            if self.status != StatusEnum.OBSOLETED:
-                logg.warning('CANCELLED must follow OBSOLETED, but had {}'.format(StatusEnum(self.status).name))
-                #raise TxStateChangeError('CANCELLED must follow OBSOLETED, but had {}'.format(StatusEnum(self.status).name))
+            if self.status > 0 and not self.status & StatusBits.OBSOLETE:
+                raise TxStateChangeError('CANCEL can only be set on an entry marked OBSOLETE ({})'.format(status_str(self.status)))
             self.__set_status(StatusEnum.CANCELLED, session)
-        elif self.status != StatusEnum.OBSOLETED:
-            if self.status > StatusEnum.SENT:
-                logg.warning('OBSOLETED must follow PENDING, SENDFAIL or SENT, but had {}'.format(StatusEnum(self.status).name))
-                #raise TxStateChangeError('OBSOLETED must follow PENDING, SENDFAIL or SENT, but had {}'.format(StatusEnum(self.status).name))
+        else:
             self.__set_status(StatusEnum.OBSOLETED, session)
 
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
 
     def success(self, block, session=None):
         """Marks that transaction was successfully mined.
@@ -235,16 +422,27 @@ class Otx(SessionBase):
         :raises cic_eth.db.error.TxStateChangeError: State change represents a sequence of events that should not exist.
         """
 
+        session = SessionBase.bind_session(session)
+
+        if self.status & StatusBits.FINAL:
+            raise TxStateChangeError('SUCCESS cannot be set on an entry with FINAL state set ({})'.format(status_str(self.status)))
+        if not self.status & StatusBits.IN_NETWORK:
+            raise TxStateChangeError('SUCCESS cannot be set on an entry without IN_NETWORK state set ({})'.format(status_str(self.status)))
+        if is_error_status(self.status):
+            raise TxStateChangeError('SUCCESS cannot be set on an entry with error state set ({})'.format(status_str(self.status)))
+
         if block != None:
             self.block = block
-        if self.status != StatusEnum.SENT:
-            logg.error('SUCCESS should follow SENT, but had {}'.format(StatusEnum(self.status).name))
-            #raise TxStateChangeError('SUCCESS must follow SENT, but had {}'.format(StatusEnum(self.status).name))
         self.__set_status(StatusEnum.SUCCESS, session)
 
+        if self.tracing:
+            self.__state_log(session=session)
+
+        SessionBase.release_session(session)
+
 
     @staticmethod
-    def get(status=0, limit=4096, status_exact=True):
+    def get(status=0, limit=4096, status_exact=True, session=None):
         """Returns outgoing transaction lists by status.
 
         Status may either be matched exactly, or be an upper bound of the integer value of the status enum.
@@ -259,26 +457,32 @@ class Otx(SessionBase):
         :rtype: tuple, where first element is transaction hash
         """
         e = None
-        session = Otx.create_session()
+
+        session = SessionBase.bind_session(session)
+
         if status_exact:
             e = session.query(Otx.tx_hash).filter(Otx.status==status).order_by(Otx.date_created.asc()).limit(limit).all()
         else:
             e = session.query(Otx.tx_hash).filter(Otx.status<=status).order_by(Otx.date_created.asc()).limit(limit).all()
-        session.close()
+        
+        SessionBase.release_session(session)
         return e
 
 
     @staticmethod
-    def load(tx_hash):
+    def load(tx_hash, session=None):
         """Retrieves the outgoing transaction record by transaction hash.
 
         :param tx_hash: Transaction hash
         :type tx_hash: str, 0x-hex
         """
-        session = Otx.create_session()
+        session = SessionBase.bind_session(session)
+        
         q = session.query(Otx)
         q = q.filter(Otx.tx_hash==tx_hash)
-        session.close()
+
+        SessionBase.release_session(session)
+
         return q.first()
 
 
@@ -450,6 +654,3 @@ class OtxSync(SessionBase):
         self.tx_height_session = 0
         self.block_height_backlog = 0
         self.tx_height_backlog = 0
-
-
-

apps/cic-eth/cic_eth/db/models/role.py

@@ -24,9 +24,10 @@ class AccountRole(SessionBase):
     tag = Column(Text)
     address_hex = Column(String(42))
 
-
+    
+    # TODO: 
     @staticmethod
-    def get_address(tag):
+    def get_address(tag, session):
         """Get Ethereum address matching the given tag
 
         :param tag: Tag
@@ -34,14 +35,26 @@ class AccountRole(SessionBase):
         :returns: Ethereum address, or zero-address if tag does not exist
         :rtype: str, 0x-hex
         """
-        role = AccountRole.get_role(tag)
-        if role == None:
-            return zero_address
-        return role.address_hex
+        if session == None:
+            raise ValueError('nested bind session calls will not succeed as the first call to release_session in the stack will leave the db object detached further down the stack. We will need additional reference count.')
+
+        session = SessionBase.bind_session(session)
+
+        role = AccountRole.__get_role(tag, session)
+    
+        r = zero_address
+        if role != None:
+            r = role.address_hex
+
+        session.flush()
+
+        SessionBase.release_session(session)
+
+        return r
 
 
     @staticmethod
-    def get_role(tag):
+    def get_role(tag, session=None):
         """Get AccountRole model object matching the given tag
 
         :param tag: Tag
@@ -49,20 +62,27 @@ class AccountRole(SessionBase):
         :returns: Role object, if found
         :rtype: cic_eth.db.models.role.AccountRole
         """
-        session = AccountRole.create_session()
-        role = AccountRole.__get_role(session, tag)
-        session.close()
-        #return role.address_hex
+        session = SessionBase.bind_session(session)
+        
+        role = AccountRole.__get_role(tag, session)
+
+        session.flush()
+        
+        SessionBase.release_session(session)
+
         return role
 
 
     @staticmethod
-    def __get_role(session, tag):
-        return session.query(AccountRole).filter(AccountRole.tag==tag).first()
+    def __get_role(tag, session):
+        q = session.query(AccountRole)
+        q = q.filter(AccountRole.tag==tag)
+        r = q.first()
+        return r
 
 
     @staticmethod    
-    def set(tag, address_hex):
+    def set(tag, address_hex, session=None):
         """Persist a tag to Ethereum address association. 
 
         This will silently overwrite the existing value.
@@ -74,16 +94,18 @@ class AccountRole(SessionBase):
         :returns: Role object
         :rtype: cic_eth.db.models.role.AccountRole
         """
-        #session = AccountRole.create_session()
-        #role = AccountRole.__get(session, tag)
-        role = AccountRole.get_role(tag) #session, tag)
+        session = SessionBase.bind_session(session)
+        
+        role = AccountRole.__get_role(tag, session)
         if role == None:
             role = AccountRole(tag)
         role.address_hex = address_hex
-        #session.add(role)
-        #session.commit()
-        #session.close()
-        return role #address_hex
+
+        session.flush()
+        
+        SessionBase.release_session(session)
+
+        return role 
 
 
     @staticmethod
@@ -95,20 +117,17 @@ class AccountRole(SessionBase):
         :returns: Role tag, or None if no match
         :rtype: str or None
         """
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
+        session = SessionBase.bind_session(session)
 
-        q = localsession.query(AccountRole)
+        q = session.query(AccountRole)
         q = q.filter(AccountRole.address_hex==address)
         role = q.first()
         tag = None
         if role != None:
             tag = role.tag
 
-        if session == None:
-            localsession.close()
-       
+        SessionBase.release_session(session)
+
         return tag
 
 

apps/cic-eth/cic_eth/db/models/tx.py

@@ -2,7 +2,7 @@
 import datetime
 
 # third-party imports
-from sqlalchemy import Column, String, Integer, DateTime, Enum, ForeignKey, Boolean
+from sqlalchemy import Column, String, Integer, DateTime, Enum, ForeignKey, Boolean, NUMERIC
 from sqlalchemy.ext.hybrid import hybrid_method, hybrid_property
 #from sqlalchemy.orm import relationship, backref
 #from sqlalchemy.ext.declarative import declarative_base
@@ -55,8 +55,8 @@ class TxCache(SessionBase):
     destination_token_address = Column(String(42))
     sender = Column(String(42))
     recipient = Column(String(42))
-    from_value = Column(String())
-    to_value = Column(String())
+    from_value = Column(NUMERIC())
+    to_value = Column(NUMERIC())
     block_number = Column(Integer())
     tx_index = Column(Integer())
     date_created = Column(DateTime, default=datetime.datetime.utcnow)
@@ -64,16 +64,6 @@ class TxCache(SessionBase):
     date_checked = Column(DateTime, default=datetime.datetime.utcnow)
 
 
-    def values(self):
-        from_value_hex = bytes.fromhex(self.from_value)
-        from_value = int.from_bytes(from_value_hex, 'big')
-
-        to_value_hex = bytes.fromhex(self.to_value)
-        to_value = int.from_bytes(to_value_hex, 'big')
-
-        return (from_value, to_value)
-
-
     def check(self):
         """Update the "checked" timestamp to current time.
 
@@ -95,68 +85,67 @@ class TxCache(SessionBase):
         :param tx_hash_new: tx hash to associate the copied entry with
         :type tx_hash_new: str, 0x-hex
         """
-        localsession = session
-        if localsession == None:
-            localsession = SessionBase.create_session()
-
-        q = localsession.query(TxCache)
+        session = SessionBase.bind_session(session)
+        
+        q = session.query(TxCache)
         q = q.join(Otx)
         q = q.filter(Otx.tx_hash==tx_hash_original)
         txc = q.first()
 
         if txc == None:
+            SessionBase.release_session(session)
             raise NotLocalTxError('original {}'.format(tx_hash_original))
         if txc.block_number != None:
+            SessionBase.release_session(session)
             raise TxStateChangeError('cannot clone tx cache of confirmed tx {}'.format(tx_hash_original))
 
-        q = localsession.query(Otx)
+        session.flush()
+        q = session.query(Otx)
         q = q.filter(Otx.tx_hash==tx_hash_new)
         otx = q.first()
 
         if otx == None:
+            SessionBase.release_session(session)
             raise NotLocalTxError('new {}'.format(tx_hash_new))
 
-        values = txc.values()
         txc_new = TxCache(
                 otx.tx_hash,
                 txc.sender,
                 txc.recipient,
                 txc.source_token_address,
                 txc.destination_token_address,
-                values[0],
-                values[1],
+                int(txc.from_value),
+                int(txc.to_value),
+                session=session,
                 )
-        localsession.add(txc_new)
-        localsession.commit()
+        session.add(txc_new)
+        session.commit()
 
-        if session == None:
-            localsession.close()
+        SessionBase.release_session(session)
 
 
-    def __init__(self, tx_hash, sender, recipient, source_token_address, destination_token_address, from_value, to_value, block_number=None, tx_index=None):
-        session = SessionBase.create_session()
-        tx = session.query(Otx).filter(Otx.tx_hash==tx_hash).first()
+    def __init__(self, tx_hash, sender, recipient, source_token_address, destination_token_address, from_value, to_value, block_number=None, tx_index=None, session=None):
+        session = SessionBase.bind_session(session)
+        q = session.query(Otx)
+        q = q.filter(Otx.tx_hash==tx_hash)
+        tx = q.first()
         if tx == None:
-            session.close()
+            SessionBase.release_session(session)
             raise FileNotFoundError('outgoing transaction record unknown {} (add a Tx first)'.format(tx_hash))
         self.otx_id = tx.id
 
-#        if tx == None:
-#            session.close()
-#            raise ValueError('tx hash {} (outgoing: {}) not found'.format(tx_hash, outgoing))
-#        session.close()
-
         self.sender = sender
         self.recipient = recipient
         self.source_token_address = source_token_address
         self.destination_token_address = destination_token_address
-        self.from_value = num_serialize(from_value).hex()
-        self.to_value = num_serialize(to_value).hex()
+        self.from_value = from_value
+        self.to_value = to_value
         self.block_number = block_number
         self.tx_index = tx_index
         # not automatically set in sqlite, it seems:
-        self.date_created = datetime.datetime.now()
+        self.date_created = datetime.datetime.utcnow()
         self.date_updated = self.date_created
         self.date_checked = self.date_created
 
+        SessionBase.release_session(session)
 

apps/cic-eth/cic_eth/error.py

@@ -54,8 +54,29 @@ class RoleMissingError(Exception):
     pass
 
 
+class IntegrityError(Exception):
+    """Exception raised to signal irregularities with deduplication and ordering of tasks
+
+    """
+    pass
+
+
 class LockedError(Exception):
     """Exception raised when attempt is made to execute action that is deactivated by lock
 
     """
     pass
+
+
+class SignerError(Exception):
+    """Exception raised when signer is unavailable or generates an error
+
+    """
+    pass
+
+
+class EthError(Exception):
+    """Exception raised when unspecified error from evm node is encountered
+
+    """
+    pass

apps/cic-eth/cic_eth/eth/account.py

@@ -8,6 +8,7 @@ from cic_registry import CICRegistry
 from cic_registry.chain import ChainSpec
 from erc20_single_shot_faucet import Faucet
 from cic_registry import zero_address
+from hexathon import strip_0x
 
 # local import
 from cic_eth.eth import RpcClient
@@ -20,7 +21,14 @@ from cic_eth.db.models.base import SessionBase
 from cic_eth.db.models.role import AccountRole
 from cic_eth.db.models.tx import TxCache
 from cic_eth.eth.util import unpack_signed_raw_tx
-from cic_eth.error import RoleMissingError
+from cic_eth.error import (
+        RoleMissingError,
+        SignerError,
+        )
+from cic_eth.task import (
+        CriticalSQLAlchemyTask,
+        CriticalSQLAlchemyAndSignerTask,
+        )
 
 #logg = logging.getLogger(__name__)
 logg = logging.getLogger()
@@ -34,6 +42,8 @@ class AccountTxFactory(TxFactory):
             self,
             address,
             chain_spec,
+            uuid,
+            session=None,
             ):
         """Register an Ethereum account address with the on-chain account registry
 
@@ -56,7 +66,7 @@ class AccountTxFactory(TxFactory):
             'gas': gas,
             'gasPrice': self.gas_price,
             'chainId': chain_spec.chain_id(),
-            'nonce': self.next_nonce(),
+            'nonce': self.next_nonce(uuid, session=session),
             'value': 0,
             })
         return tx_add
@@ -66,6 +76,8 @@ class AccountTxFactory(TxFactory):
             self,
             address,
             chain_spec,
+            uuid,
+            session=None,
         ):
         """Trigger the on-chain faucet to disburse tokens to the provided Ethereum account
 
@@ -86,7 +98,7 @@ class AccountTxFactory(TxFactory):
             'gas': gas,
             'gasPrice': self.gas_price,
             'chainId': chain_spec.chain_id(),
-            'nonce': self.next_nonce(),
+            'nonce': self.next_nonce(uuid, session=session),
             'value': 0,
             })
         return tx_add
@@ -101,11 +113,12 @@ def unpack_register(data):
     :returns: Parsed parameters
     :rtype: dict
     """
-    f = data[2:10]
+    data = strip_0x(data)
+    f = data[:8]
     if f != '0a3b0a4f':
         raise ValueError('Invalid account index register data ({})'.format(f))
 
-    d = data[10:]
+    d = data[8:]
     return {
         'to': web3.Web3.toChecksumAddress('0x' + d[64-40:64]),
         }
@@ -120,17 +133,19 @@ def unpack_gift(data):
     :returns: Parsed parameters
     :rtype: dict
     """
-    f = data[2:10]
+    data = strip_0x(data)
+    f = data[:8]
     if f != '63e4bff4':
-        raise ValueError('Invalid account index register data ({})'.format(f))
+        raise ValueError('Invalid gift data ({})'.format(f))
 
-    d = data[10:]
+    d = data[8:]
     return {
         'to': web3.Web3.toChecksumAddress('0x' + d[64-40:64]),
         }
      
 
-@celery_app.task()
+# TODO: Separate out nonce initialization task
+@celery_app.task(base=CriticalSQLAlchemyAndSignerTask)
 def create(password, chain_str):
     """Creates and stores a new ethereum account in the keystore.
 
@@ -145,24 +160,24 @@ def create(password, chain_str):
     """
     chain_spec = ChainSpec.from_chain_str(chain_str)
     c = RpcClient(chain_spec)
-    a = c.w3.eth.personal.new_account(password)
+    a = None
+    try:
+        a = c.w3.eth.personal.new_account(password)
+    except FileNotFoundError:
+        pass
+    if a == None:
+        raise SignerError('create account')
     logg.debug('created account {}'.format(a))
 
     # Initialize nonce provider record for account
-    n = c.w3.eth.getTransactionCount(a, 'pending')
     session = SessionBase.create_session()
-    o = session.query(Nonce).filter(Nonce.address_hex==a).first()
-    if o == None:
-        o = Nonce()
-        o.address_hex = a
-        o.nonce = n
-        session.add(o)
-        session.commit()
+    Nonce.init(a, session=session)
+    session.commit()
     session.close()
     return a
 
 
-@celery_app.task(bind=True, throws=(RoleMissingError,))
+@celery_app.task(bind=True, throws=(RoleMissingError,), base=CriticalSQLAlchemyAndSignerTask)
 def register(self, account_address, chain_str, writer_address=None):
     """Creates a transaction to add the given address to the accounts index.
 
@@ -178,21 +193,24 @@ def register(self, account_address, chain_str, writer_address=None):
     """
     chain_spec = ChainSpec.from_chain_str(chain_str)
 
+    session = SessionBase.create_session()
     if writer_address == None:
-        writer_address = AccountRole.get_address('ACCOUNTS_INDEX_WRITER')
+        writer_address = AccountRole.get_address('ACCOUNTS_INDEX_WRITER', session=session)
 
     if writer_address == zero_address:
+        session.close()
         raise RoleMissingError(account_address)
 
-
     logg.debug('adding account address {} to index; writer {}'.format(account_address, writer_address))
     queue = self.request.delivery_info['routing_key']
 
     c = RpcClient(chain_spec, holder_address=writer_address)
     txf = AccountTxFactory(writer_address, c)
 
-    tx_add = txf.add(account_address, chain_spec)
-    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_add, chain_str, queue, 'cic_eth.eth.account.cache_account_data')
+    tx_add = txf.add(account_address, chain_spec, self.request.root_id, session=session)
+    
+    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_add, chain_str, queue, 'cic_eth.eth.account.cache_account_data', session=session)
+    session.close()
 
     gas_budget = tx_add['gas'] * tx_add['gasPrice']
 
@@ -209,7 +227,7 @@ def register(self, account_address, chain_str, writer_address=None):
     return account_address
 
 
-@celery_app.task(bind=True)
+@celery_app.task(bind=True, base=CriticalSQLAlchemyAndSignerTask)
 def gift(self, account_address, chain_str):
     """Creates a transaction to invoke the faucet contract for the given address.
 
@@ -228,12 +246,14 @@ def gift(self, account_address, chain_str):
     c = RpcClient(chain_spec, holder_address=account_address)
     txf = AccountTxFactory(account_address, c)
 
-    tx_add = txf.gift(account_address, chain_spec)
-    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_add, chain_str, queue, 'cic_eth.eth.account.cache_gift_data')
+    session = SessionBase.create_session()
+    tx_add = txf.gift(account_address, chain_spec, self.request.root_id, session=session)
+    (tx_hash_hex, tx_signed_raw_hex) = sign_and_register_tx(tx_add, chain_str, queue, 'cic_eth.eth.account.cache_gift_data', session=session)
+    session.close()
 
     gas_budget = tx_add['gas'] * tx_add['gasPrice']
 
-    logg.debug('register user tx {}'.format(tx_hash_hex))
+    logg.debug('gift user tx {}'.format(tx_hash_hex))
     s = create_check_gas_and_send_task(
             [tx_signed_raw_hex],
             chain_str,
@@ -304,6 +324,8 @@ def cache_gift_data(
     tx = unpack_signed_raw_tx(tx_signed_raw_bytes, chain_spec.chain_id())
     tx_data = unpack_gift(tx['data'])
 
+    session = SessionBase.create_session()
+
     tx_cache = TxCache(
         tx_hash_hex,
         tx['from'],
@@ -312,9 +334,9 @@ def cache_gift_data(
         zero_address,
         0,
         0,
+        session=session,
             )
 
-    session = SessionBase.create_session()
     session.add(tx_cache)
     session.commit()
     cache_id = tx_cache.id
@@ -322,7 +344,7 @@ def cache_gift_data(
     return (tx_hash_hex, cache_id)
 
 
-@celery_app.task()
+@celery_app.task(base=CriticalSQLAlchemyTask)
 def cache_account_data(
     tx_hash_hex,
     tx_signed_raw_hex,
@@ -347,6 +369,7 @@ def cache_account_data(
     tx = unpack_signed_raw_tx(tx_signed_raw_bytes, chain_spec.chain_id())
     tx_data = unpack_register(tx['data'])
 
+    session = SessionBase.create_session()
     tx_cache = TxCache(
         tx_hash_hex,
         tx['from'],
@@ -355,9 +378,8 @@ def cache_account_data(
         zero_address,
         0,
         0,
+        session=session,
             )
-
-    session = SessionBase.create_session()
     session.add(tx_cache)
     session.commit()
     cache_id = tx_cache.id

apps/cic-eth/cic_eth/eth/factory.py

@@ -32,10 +32,10 @@ class TxFactory:
         logg.debug('txfactory instance address {} gas price'.format(self.address, self.gas_price))
         
 
-    def next_nonce(self):
-        """Returns the current cached nonce value, and increments it for next transaction.
+    def next_nonce(self, uuid, session=None):
+        """Returns the current reserved nonce value, and increments it for next transaction.
 
         :returns: Nonce
         :rtype: number
         """
-        return self.nonce_oracle.next()
+        return self.nonce_oracle.next_by_task_uuid(uuid, session=session)