chaintool/chainsyncer
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Implement chainlib basedir override

Browse Source
This commit is contained in:
Louis Holbrook 2021-08-26 08:09:47 +00:00
parent e7bc480f7c
commit 5ff72117bc
46 changed files with 1083 additions and 480 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored
View File

@ -5,3 +5,4 @@ __pycache__
gmon.out
build/
dist/
*.sqlite

2
MANIFEST.in
View File

@ -1 +1 @@
include *requirements.txt LICENSE.txt sql/**/*
include *requirements.txt LICENSE.txt chainsyncer/db/migrations/default/* chainsyncer/db/migrations/default/versions/* chainsyncer/db/migrations/default/versions/src/*

25
chainsyncer/backend/base.py
View File

@ -9,7 +9,17 @@ class Backend:
def __init__(self, flags_reversed=False):
self.filter_count = 0
self.flags_reversed = flags_reversed
self.block_height_offset = 0
self.tx_index_offset = 0
self.block_height_cursor = 0
self.tx_index_cursor = 0
self.block_height_target = 0
self.tx_index_target = 0
def check_filter(self, n, flags):
if self.flags_reversed:
@ -20,3 +30,16 @@ class Backend:
pass
return False
return flags & (1 << n) > 0
def chain(self):
"""Returns chain spec for syncer
:returns: Chain spec
:rtype chain_spec: cic_registry.chain.ChainSpec
"""
return self.chain_spec
def __str__(self):
return "syncerbackend chain {} start {} target {}".format(self.chain(), self.start(), self.target())

36
chainsyncer/backend/file.py
View File

@ -28,15 +28,6 @@ class FileBackend(Backend):
super(FileBackend, self).__init__(flags_reversed=True)
self.object_data_dir = data_dir_for(chain_spec, object_id, base_dir=base_dir)
self.block_height_offset = 0
self.tx_index_offset = 0
self.block_height_cursor = 0
self.tx_index_cursor = 0
self.block_height_target = 0
self.tx_index_target = 0
self.object_id = object_id
self.db_object = None
self.db_object_filter = None
@ -206,8 +197,18 @@ class FileBackend(Backend):
o = FileBackend(chain_spec, uu, base_dir=base_dir)
o.__set(target_block_height, 0, 'target')
o.__set(start_block_height, 0, 'offset')
o.__set(start_block_height, 0, 'cursor')
return o
@staticmethod
def live(chain_spec, block_height, base_dir=base_dir):
uu = FileBackend.create_object(chain_spec, base_dir=base_dir)
o = FileBackend(chain_spec, uu, base_dir=base_dir)
o.__set(block_height, 0, 'offset')
o.__set(block_height, 0, 'cursor')
#return uu
return o
@ -245,15 +246,20 @@ class FileBackend(Backend):
@staticmethod
def resume(chain_spec, base_dir=base_dir):
return FileBackend.__sorted_entries(chain_spec, base_dir=base_dir)
def resume(chain_spec, block_height, base_dir=base_dir):
try:
return FileBackend.__sorted_entries(chain_spec, base_dir=base_dir)
except FileNotFoundError:
return []
@staticmethod
def first(chain_spec, base_dir=base_dir):
entries = FileBackend.__sorted_entries(chain_spec, base_dir=base_dir)
entries = []
try:
entries = FileBackend.__sorted_entries(chain_spec, base_dir=base_dir)
except FileNotFoundError:
return entries
return entries[len(entries)-1]

1
chainsyncer/backend/memory.py
View File

@ -19,6 +19,7 @@ class MemBackend(Backend):
self.target_block = target_block
self.db_session = None
self.filter_names = []
self.filter_states = {}
def connect(self):

10
chainsyncer/backend/sql.py
View File

@ -78,14 +78,6 @@ class SQLBackend(Backend):
self.db_session.close()
self.db_session = None
def chain(self):
"""Returns chain spec for syncer
:returns: Chain spec
:rtype chain_spec: cic_registry.chain.ChainSpec
"""
return self.chain_spec
def get(self):
@ -313,5 +305,3 @@ class SQLBackend(Backend):
self.disconnect()
def __str__(self):
return "syncerbackend chain {} start {} target {}".format(self.chain(), self.start(), self.target())

0
chainsyncer/db/migrations/__init__.py Normal file
View File

1
chainsyncer/db/migrations/default/README Normal file
View File

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

85
chainsyncer/db/migrations/default/alembic.ini Normal file
View File

@ -0,0 +1,85 @@
# 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
[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

77
chainsyncer/db/migrations/default/env.py Normal file
View File

@ -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()

37
chainsyncer/db/migrations/default/export.py Normal file
View File

@ -0,0 +1,37 @@
from alembic import op
import sqlalchemy as sa
from chainsyncer.db.migrations.default.versions.src.sync import (
upgrade as upgrade_sync,
downgrade as downgrade_sync,
)
from chainsyncer.db.migrations.default.versions.src.sync_tx import (
upgrade as upgrade_sync_tx,
downgrade as downgrade_sync_tx,
)
def chainsyncer_upgrade(major=0, minor=0, patch=3):
r0_0_1_u()
if patch >= 3:
r0_0_3_u()
def chainsyncer_downgrade(major=0, minor=0, patch=3):
if patch >= 3:
r0_0_3_d()
r0_0_1_d()
def r0_0_1_u():
upgrade_sync()
def r0_0_1_d():
downgrade_sync()
# 0.0.3
def r0_0_3_u():
upgrade_sync_tx()
def r0_0_3_d():
downgrade_sync_tx()

24
chainsyncer/db/migrations/default/script.py.mako Normal file
View File

@ -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"}

14
chainsyncer/db/migrations/default/versions/452ecfa81de3_base_setup.py Normal file
View File

@ -0,0 +1,14 @@
"""base setup
Revision ID: 452ecfa81de3
Revises:
Create Date: 2021-07-16 16:29:32.460027
"""
# revision identifiers, used by Alembic.
revision = '452ecfa81de3'
down_revision = None
branch_labels = None
depends_on = None
from chainsyncer.db.migrations.default.versions.src.sync import upgrade, downgrade

14
chainsyncer/db/migrations/default/versions/a2ce6826c5eb_sync_tx.py Normal file
View File

@ -0,0 +1,14 @@
"""sync-tx
Revision ID: a2ce6826c5eb
Revises: 452ecfa81de3
Create Date: 2021-07-16 18:17:53.439721
"""
# revision identifiers, used by Alembic.
revision = 'a2ce6826c5eb'
down_revision = '452ecfa81de3'
branch_labels = None
depends_on = None
from chainsyncer.db.migrations.default.versions.src.sync_tx import upgrade, downgrade

32
chainsyncer/db/migrations/default/versions/src/sync.py Normal file
View File

@ -0,0 +1,32 @@
from alembic import op
import sqlalchemy as sa
def upgrade():
op.create_table(
'chain_sync',
sa.Column('id', sa.Integer, primary_key=True),
sa.Column('blockchain', sa.String, nullable=False),
sa.Column('block_start', sa.Integer, nullable=False, default=0),
sa.Column('tx_start', sa.Integer, nullable=False, default=0),
sa.Column('block_cursor', sa.Integer, nullable=False, default=0),
sa.Column('tx_cursor', sa.Integer, nullable=False, default=0),
sa.Column('block_target', sa.Integer, nullable=True),
sa.Column('date_created', sa.DateTime, nullable=False),
sa.Column('date_updated', sa.DateTime),
)
op.create_table(
'chain_sync_filter',
sa.Column('id', sa.Integer, primary_key=True),
sa.Column('chain_sync_id', sa.Integer, sa.ForeignKey('chain_sync.id'), nullable=True),
sa.Column('flags', sa.LargeBinary, nullable=True),
sa.Column('flags_start', sa.LargeBinary, nullable=True),
sa.Column('count', sa.Integer, nullable=False, default=0),
sa.Column('digest', sa.String(64), nullable=False),
)
def downgrade():
op.drop_table('chain_sync_filter')
op.drop_table('chain_sync')

17
chainsyncer/db/migrations/default/versions/src/sync_tx.py Normal file
View File

@ -0,0 +1,17 @@
from alembic import op
import sqlalchemy as sa
def upgrade():
op.create_table(
'chain_sync_tx',
sa.Column('id', sa.Integer, primary_key=True),
sa.Column('blockchain', sa.String, nullable=False),
sa.Column('chain_sync_id', sa.Integer, sa.ForeignKey('chain_sync.id'), nullable=False),
sa.Column('flags', sa.LargeBinary, nullable=True),
sa.Column('block', sa.Integer, nullable=False),
sa.Column('tx', sa.Integer, nullable=False),
)
def downgrade():
op.drop_table('chain_sync_tx')

55
chainsyncer/db/migrations/sqlalchemy.py
View File

@ -1,36 +1,37 @@
from alembic import op
import sqlalchemy as sa
def chainsyncer_upgrade(major=0, minor=0, patch=1):
r0_0_1_u()
from chainsyncer.db.migrations.default.versions.tags.sync import
upgrade as upgrade_sync,
downgrade as downgrade_sync,
)
def chainsyncer_downgrade(major=0, minor=0, patch=1):
from chainsyncer.db.migrations.default.versions.tags.sync_tx import
upgrade as upgrade_sync_tx,
downgrade as downgrade_sync_tx,
)
def chainsyncer_upgrade(major=0, minor=0, patch=3):
r0_0_1_u()
if patch >= 3:
r0_0_3_u()
def chainsyncer_downgrade(major=0, minor=0, patch=3):
if patch >= 3:
r0_0_3_d()
r0_0_1_d()
def r0_0_1_u():
op.create_table(
'chain_sync',
sa.Column('id', sa.Integer, primary_key=True),
sa.Column('blockchain', sa.String, nullable=False),
sa.Column('block_start', sa.Integer, nullable=False, default=0),
sa.Column('tx_start', sa.Integer, nullable=False, default=0),
sa.Column('block_cursor', sa.Integer, nullable=False, default=0),
sa.Column('tx_cursor', sa.Integer, nullable=False, default=0),
sa.Column('block_target', sa.Integer, nullable=True),
sa.Column('date_created', sa.DateTime, nullable=False),
sa.Column('date_updated', sa.DateTime),
)
op.create_table(
'chain_sync_filter',
sa.Column('id', sa.Integer, primary_key=True),
sa.Column('chain_sync_id', sa.Integer, sa.ForeignKey('chain_sync.id'), nullable=True),
sa.Column('flags', sa.LargeBinary, nullable=True),
sa.Column('flags_start', sa.LargeBinary, nullable=True),
sa.Column('count', sa.Integer, nullable=False, default=0),
sa.Column('digest', sa.String(64), nullable=False),
)
upgrade_sync()
def r0_0_1_d():
op.drop_table('chain_sync_filter')
op.drop_table('chain_sync')
downgrade_sync()
# 0.0.3
def r0_0_3_u():
upgrade_sync_tx()
def r0_0_3_d():
downgrade_sync_tx()

0
chainsyncer/db/models/__init__.py Normal file
View File

1
chainsyncer/db/models/base.py
View File

@ -120,3 +120,4 @@ class SessionBase(Model):
logg.debug('destroying session {}'.format(session_key))
session.commit()
session.close()
del SessionBase.localsessions[session_key]

209
chainsyncer/driver.py
View File

@ -1,209 +0,0 @@
# standard imports
import uuid
import logging
import time
import signal
import json
# external imports
from chainlib.eth.block import (
block_by_number,
Block,
)
from chainlib.eth.tx import (
receipt,
transaction,
Tx,
)
from chainlib.error import JSONRPCException
# local imports
from chainsyncer.filter import SyncFilter
from chainsyncer.error import (
SyncDone,
NoBlockForYou,
)
logg = logging.getLogger().getChild(__name__)
def noop_callback(block, tx):
logg.debug('noop callback ({},{})'.format(block, tx))
class Syncer:
running_global = True
yield_delay=0.005
signal_request = [signal.SIGINT, signal.SIGTERM]
signal_set = False
def __init__(self, backend, pre_callback=None, block_callback=None, post_callback=None):
self.cursor = None
self.running = True
self.backend = backend
self.filter = SyncFilter(backend)
self.block_callback = block_callback
self.pre_callback = pre_callback
self.post_callback = post_callback
if not Syncer.signal_set:
for sig in Syncer.signal_request:
signal.signal(sig, Syncer.__sig_terminate)
Syncer.signal_set = True
@staticmethod
def __sig_terminate(sig, frame):
logg.warning('got signal {}'.format(sig))
Syncer.terminate()
@staticmethod
def terminate():
logg.info('termination requested!')
Syncer.running_global = False
def chain(self):
"""Returns the string representation of the chain spec for the chain the syncer is running on.
:returns: Chain spec string
:rtype: str
"""
return self.bc_cache.chain()
def add_filter(self, f):
self.filter.add(f)
self.backend.register_filter(str(f))
def process_single(self, conn, block, tx):
self.backend.set(block.number, tx.index)
self.filter.apply(conn, block, tx)
class BlockPollSyncer(Syncer):
def __init__(self, backend, pre_callback=None, block_callback=None, post_callback=None):
super(BlockPollSyncer, self).__init__(backend, pre_callback, block_callback, post_callback)
def loop(self, interval, conn):
(pair, fltr) = self.backend.get()
start_tx = pair[1]
while self.running and Syncer.running_global:
if self.pre_callback != None:
self.pre_callback()
while True and Syncer.running_global:
if start_tx > 0:
start_tx -= 1
continue
try:
block = self.get(conn)
except SyncDone as e:
logg.info('sync done: {}'.format(e))
return self.backend.get()
except NoBlockForYou as e:
break
# TODO: To properly handle this, ensure that previous request is rolled back
# except sqlalchemy.exc.OperationalError as e:
# logg.error('database error: {}'.format(e))
# break
if self.block_callback != None:
self.block_callback(block, None)
last_block = block
self.process(conn, block)
start_tx = 0
time.sleep(self.yield_delay)
if self.post_callback != None:
self.post_callback()
time.sleep(interval)
class HeadSyncer(BlockPollSyncer):
def process(self, conn, block):
(pair, fltr) = self.backend.get()
logg.debug('process block {} (backend {}:{})'.format(block, pair, fltr))
i = pair[1] # set tx index from previous
tx = None
while True:
try:
tx = block.tx(i)
except AttributeError:
o = transaction(block.txs[i])
r = conn.do(o)
tx = Tx(Tx.src_normalize(r), block=block)
except IndexError as e:
logg.debug('index error syncer rcpt get {}'.format(e))
self.backend.set(block.number + 1, 0)
break
# TODO: Move specifics to eth subpackage, receipts are not a global concept
rcpt = conn.do(receipt(tx.hash))
if rcpt != None:
tx.apply_receipt(Tx.src_normalize(rcpt))
self.process_single(conn, block, tx)
self.backend.reset_filter()
i += 1
def get(self, conn):
(height, flags) = self.backend.get()
block_number = height[0]
block_hash = []
o = block_by_number(block_number)
r = conn.do(o)
if r == None:
raise NoBlockForYou()
b = Block(r)
b.txs = b.txs[height[1]:]
return b
def __str__(self):
return '[headsyncer] {}'.format(str(self.backend))
class HistorySyncer(HeadSyncer):
def __init__(self, backend, pre_callback=None, block_callback=None, post_callback=None):
super(HeadSyncer, self).__init__(backend, pre_callback, block_callback, post_callback)
self.block_target = None
(block_number, flags) = self.backend.target()
if block_number == None:
raise AttributeError('backend has no future target. Use HeadSyner instead')
self.block_target = block_number
logg.debug('block target {}'.format(self.block_target))
def get(self, conn):
(height, flags) = self.backend.get()
if self.block_target < height[0]:
raise SyncDone(self.block_target)
block_number = height[0]
block_hash = []
o = block_by_number(block_number)
try:
r = conn.do(o)
# TODO: Disambiguate whether error is temporary or permanent, if permanent, SyncDone should be raised, because a historical sync is attempted into the future
except JSONRPCException:
r = None
if r == None:
raise SyncDone() #NoBlockForYou()
b = Block(r)
return b
def __str__(self):
return '[historysyncer] {}'.format(str(self.backend))

1
chainsyncer/driver/__init__.py Normal file
View File

@ -0,0 +1 @@
from .base import Syncer

73
chainsyncer/driver/base.py Normal file
View File

@ -0,0 +1,73 @@
# standard imports
import uuid
import logging
import time
import signal
import json
# external imports
from chainlib.error import JSONRPCException
# local imports
from chainsyncer.filter import SyncFilter
from chainsyncer.error import (
SyncDone,
NoBlockForYou,
)
logg = logging.getLogger(__name__)
def noop_callback(block, tx):
logg.debug('noop callback ({},{})'.format(block, tx))
class Syncer:
running_global = True
yield_delay=0.005
signal_request = [signal.SIGINT, signal.SIGTERM]
signal_set = False
name = 'base'
def __init__(self, backend, chain_interface, pre_callback=None, block_callback=None, post_callback=None):
self.chain_interface = chain_interface
self.cursor = None
self.running = True
self.backend = backend
self.filter = SyncFilter(backend)
self.block_callback = block_callback
self.pre_callback = pre_callback
self.post_callback = post_callback
if not Syncer.signal_set:
for sig in Syncer.signal_request:
signal.signal(sig, self.__sig_terminate)
Syncer.signal_set = True
def __sig_terminate(self, sig, frame):
logg.warning('got signal {}'.format(sig))
self.terminate()
def terminate(self):
logg.info('termination requested!')
Syncer.running_global = False
Syncer.running = False
def add_filter(self, f):
self.filter.add(f)
self.backend.register_filter(str(f))
def process_single(self, conn, block, tx):
self.backend.set(block.number, tx.index)
self.filter.apply(conn, block, tx)
def __str__(self):
return 'syncer "{}" {}'.format(
self.name,
self.backend,
)

52
chainsyncer/driver/head.py Normal file
View File

@ -0,0 +1,52 @@
# standard imports
import logging
# local imports
from chainsyncer.error import NoBlockForYou
from .poll import BlockPollSyncer
logg = logging.getLogger(__name__)
class HeadSyncer(BlockPollSyncer):
name = 'head'
def process(self, conn, block):
(pair, fltr) = self.backend.get()
logg.debug('process block {} (backend {}:{})'.format(block, pair, fltr))
i = pair[1] # set tx index from previous
tx = None
while True:
try:
tx = block.tx(i)
except AttributeError:
o = tx(block.txs[i])
r = conn.do(o)
tx = self.interface.tx_from_src(Tx.src_normalize(r), block=block)
#except IndexError as e:
# logg.debug('index error syncer tx get {}'.format(e))
# break
# TODO: Move specifics to eth subpackage, receipts are not a global concept
rcpt = conn.do(self.chain_interface.tx_receipt(tx.hash))
if rcpt != None:
tx.apply_receipt(self.chain_interface.src_normalize(rcpt))
self.process_single(conn, block, tx)
self.backend.reset_filter()
i += 1
def get(self, conn):
(height, flags) = self.backend.get()
block_number = height[0]
block_hash = []
o = self.chain_interface.block_by_number(block_number)
r = conn.do(o)
if r == None:
raise NoBlockForYou()
b = self.chain_interface.block_from_src(r)
b.txs = b.txs[height[1]:]
return b

45
chainsyncer/driver/history.py Normal file
View File

@ -0,0 +1,45 @@
# standard imports
import logging
# external imports
from chainlib.error import RPCException
# local imports
from .head import HeadSyncer
from chainsyncer.error import SyncDone
from chainlib.error import RPCException
logg = logging.getLogger(__name__)
class HistorySyncer(HeadSyncer):
name = 'history'
def __init__(self, backend, chain_interface, pre_callback=None, block_callback=None, post_callback=None):
super(HeadSyncer, self).__init__(backend, chain_interface, pre_callback, block_callback, post_callback)
self.block_target = None
(block_number, flags) = self.backend.target()
if block_number == None:
raise AttributeError('backend has no future target. Use HeadSyner instead')
self.block_target = block_number
logg.debug('block target {}'.format(self.block_target))
def get(self, conn):
(height, flags) = self.backend.get()
if self.block_target < height[0]:
raise SyncDone(self.block_target)
block_number = height[0]
block_hash = []
o = self.chain_interface.block_by_number(block_number)
try:
r = conn.do(o)
# TODO: Disambiguate whether error is temporary or permanent, if permanent, SyncDone should be raised, because a historical sync is attempted into the future
except RPCException:
r = None
if r == None:
raise SyncDone() #NoBlockForYou()
b = self.chain_interface.block_from_src(r)
return b

59
chainsyncer/driver/poll.py Normal file
View File

@ -0,0 +1,59 @@
# standard imports
import logging
import time
# local imports
from .base import Syncer
from chainsyncer.error import (
SyncDone,
NoBlockForYou,
)
logg = logging.getLogger(__name__)
class BlockPollSyncer(Syncer):
name = 'blockpoll'
def __init__(self, backend, chain_interface, pre_callback=None, block_callback=None, post_callback=None):
super(BlockPollSyncer, self).__init__(backend, chain_interface, pre_callback, block_callback, post_callback)
def loop(self, interval, conn):
(pair, fltr) = self.backend.get()
start_tx = pair[1]
while self.running and Syncer.running_global:
if self.pre_callback != None:
self.pre_callback()
while True and Syncer.running_global:
if start_tx > 0:
start_tx -= 1
continue
try:
block = self.get(conn)
except SyncDone as e:
logg.info('all blocks sumitted for processing: {}'.format(e))
return self.backend.get()
except NoBlockForYou as e:
break
# TODO: To properly handle this, ensure that previous request is rolled back
# except sqlalchemy.exc.OperationalError as e:
# logg.error('database error: {}'.format(e))
# break
if self.block_callback != None:
self.block_callback(block, None)
last_block = block
try:
self.process(conn, block)
except IndexError:
self.backend.set(block.number + 1, 0)
start_tx = 0
time.sleep(self.yield_delay)
if self.post_callback != None:
self.post_callback()
time.sleep(interval)

133
chainsyncer/driver/thread.py Normal file
View File

@ -0,0 +1,133 @@
# standard imports
import logging
#import threading
import multiprocessing
import queue
# external imports
from chainlib.error import RPCException
# local imports
from .history import HistorySyncer
from chainsyncer.error import SyncDone
logg = logging.getLogger(__name__)
class ThreadedHistorySyncer(HistorySyncer):
def __init__(self, conn_factory, thread_limit, backend, chain_interface, pre_callback=None, block_callback=None, post_callback=None, conn_limit=0):
super(ThreadedHistorySyncer, self).__init__(backend, chain_interface, pre_callback, block_callback, post_callback)
self.workers = []
if conn_limit == 0:
conn_limit = thread_limit
#self.conn_pool = queue.Queue(conn_limit)
#self.queue = queue.Queue(thread_limit)
#self.quit_queue = queue.Queue(1)
self.conn_pool = multiprocessing.Queue(conn_limit)
self.queue = multiprocessing.Queue(thread_limit)
self.quit_queue = multiprocessing.Queue(1)
#self.lock = threading.Lock()
self.lock = multiprocessing.Lock()
for i in range(thread_limit):
#w = threading.Thread(target=self.worker)
w = multiprocessing.Process(target=self.worker)
self.workers.append(w)
for i in range(conn_limit):
self.conn_pool.put(conn_factory())
def terminate(self):
self.quit_queue.put(())
super(ThreadedHistorySyncer, self).terminate()
def worker(self):
while True:
block_number = None
try:
block_number = self.queue.get(timeout=0.01)
except queue.Empty:
if self.quit_queue.qsize() > 0:
#logg.debug('{} received quit'.format(threading.current_thread().getName()))
logg.debug('{} received quit'.format(multiprocessing.current_process().name))
return
continue
conn = self.conn_pool.get()
try:
logg.debug('processing parent {} {}'.format(conn, block_number))
self.process_parent(conn, block_number)
except IndexError:
pass
except RPCException as e:
logg.error('RPC failure for block {}, resubmitting to queue: {}'.format(block, e))
self.queue.put(block_number)
conn = self.conn_pool.put(conn)
def process_parent(self, conn, block_number):
logg.debug('getting block {}'.format(block_number))
o = self.chain_interface.block_by_number(block_number)
r = conn.do(o)
block = self.chain_interface.block_from_src(r)
logg.debug('got block typ {}'.format(type(block)))
super(ThreadedHistorySyncer, self).process(conn, block)
def process_single(self, conn, block, tx):
self.filter.apply(conn, block, tx)
def process(self, conn, block):
pass
#def process(self, conn, block):
def get(self, conn):
if not self.running:
raise SyncDone()
block_number = None
tx_index = None
flags = None
((block_number, tx_index), flags) = self.backend.get()
try:
#logg.debug('putting {}'.format(block.number))
#self.queue.put((conn, block_number,), timeout=0.1)
self.queue.put(block_number, timeout=0.1)
except queue.Full:
#logg.debug('queue full, try again')
return
target, flags = self.backend.target()
next_block = block_number + 1
if next_block > target:
self.quit_queue.put(())
raise SyncDone()
self.backend.set(self.backend.block_height + 1, 0)
# def get(self, conn):
# try:
# r = super(ThreadedHistorySyncer, self).get(conn)
# return r
# except SyncDone as e:
# self.quit_queue.put(())
# raise e
def loop(self, interval, conn):
for w in self.workers:
w.start()
r = super(ThreadedHistorySyncer, self).loop(interval, conn)
for w in self.workers:
w.join()
while True:
try:
self.quit_queue.get_nowait()
except queue.Empty:
break
logg.info('workers done {}'.format(r))

171
chainsyncer/driver/threadpool.py Normal file
View File

@ -0,0 +1,171 @@
# standard imports
import logging
#import threading
import multiprocessing
import queue
import time
# external imports
from chainlib.error import RPCException
# local imports
from .history import HistorySyncer
from chainsyncer.error import SyncDone
logg = logging.getLogger(__name__)
def foobarcb(v):
logg.debug('foooz {}'.format(v))
class ThreadPoolTask:
process_func = None
chain_interface = None
def poolworker(self, block_number, conn):
# conn = args[1].get()
try:
logg.debug('processing parent {} {}'.format(conn, block_number))
#self.process_parent(self.conn, block_number)
self.process_parent(conn, block_number)
except IndexError:
pass
except RPCException as e:
logg.error('RPC failure for block {}, resubmitting to queue: {}'.format(block, e))
raise e
#self.queue.put(block_number)
# conn = self.conn_pool.put(conn)
def process_parent(self, conn, block_number):
logg.debug('getting block {}'.format(block_number))
o = self.chain_interface.block_by_number(block_number)
r = conn.do(o)
block = self.chain_interface.block_from_src(r)
logg.debug('got block typ {}'.format(type(block)))
#super(ThreadedHistorySyncer, self).process(conn, block)
self.process_func(conn, block)
class ThreadPoolHistorySyncer(HistorySyncer):
def __init__(self, conn_factory, thread_limit, backend, chain_interface, pre_callback=None, block_callback=None, post_callback=None, conn_limit=0):
super(ThreadPoolHistorySyncer, self).__init__(backend, chain_interface, pre_callback, block_callback, post_callback)
self.workers = []
self.thread_limit = thread_limit
if conn_limit == 0:
self.conn_limit = self.thread_limit
#self.conn_pool = queue.Queue(conn_limit)
#self.queue = queue.Queue(thread_limit)
#self.quit_queue = queue.Queue(1)
#self.conn_pool = multiprocessing.Queue(conn_limit)
#self.queue = multiprocessing.Queue(thread_limit)
#self.quit_queue = multiprocessing.Queue(1)
#self.lock = threading.Lock()
#self.lock = multiprocessing.Lock()
ThreadPoolTask.process_func = super(ThreadPoolHistorySyncer, self).process
ThreadPoolTask.chain_interface = chain_interface
#for i in range(thread_limit):
#w = threading.Thread(target=self.worker)
# w = multiprocessing.Process(target=self.worker)
# self.workers.append(w)
#for i in range(conn_limit):
# self.conn_pool.put(conn_factory())
self.conn_factory = conn_factory
self.worker_pool = None
def terminate(self):
#self.quit_queue.put(())
super(ThreadPoolHistorySyncer, self).terminate()
# def worker(self):
# while True:
# block_number = None
# try:
# block_number = self.queue.get(timeout=0.01)
# except queue.Empty:
# if self.quit_queue.qsize() > 0:
# #logg.debug('{} received quit'.format(threading.current_thread().getName()))
# logg.debug('{} received quit'.format(multiprocessing.current_process().name))
# return
# continue
# conn = self.conn_pool.get()
# try:
# logg.debug('processing parent {} {}'.format(conn, block_number))
# self.process_parent(conn, block_number)
# except IndexError:
# pass
# except RPCException as e:
# logg.error('RPC failure for block {}, resubmitting to queue: {}'.format(block, e))
# self.queue.put(block_number)
# conn = self.conn_pool.put(conn)
#
def process_single(self, conn, block, tx):
self.filter.apply(conn, block, tx)
def process(self, conn, block):
pass
#def process(self, conn, block):
def get(self, conn):
if not self.running:
raise SyncDone()
block_number = None
tx_index = None
flags = None
((block_number, tx_index), flags) = self.backend.get()
#try:
#logg.debug('putting {}'.format(block.number))
#self.queue.put((conn, block_number,), timeout=0.1)
#self.queue.put(block_number, timeout=0.1)
#except queue.Full:
#logg.debug('queue full, try again')
# return
task = ThreadPoolTask()
conn = self.conn_factory()
self.worker_pool.apply_async(task.poolworker, (block_number, conn,), {}, foobarcb)
target, flags = self.backend.target()
next_block = block_number + 1
if next_block > target:
#self.quit_queue.put(())
self.worker_pool.close()
raise SyncDone()
self.backend.set(self.backend.block_height + 1, 0)
# def get(self, conn):
# try:
# r = super(ThreadedHistorySyncer, self).get(conn)
# return r
# except SyncDone as e:
# self.quit_queue.put(())
# raise e
def loop(self, interval, conn):
self.worker_pool = multiprocessing.Pool(self.thread_limit)
#for w in self.workers:
# w.start()
r = super(ThreadPoolHistorySyncer, self).loop(interval, conn)
#for w in self.workers:
# w.join()
#while True:
# try:
# self.quit_queue.get_nowait()
# except queue.Empty:
# break
time.sleep(1)
self.worker_pool.join()
logg.info('workers done {}'.format(r))

4
chainsyncer/error.py
View File

@ -13,3 +13,7 @@ class RequestError(Exception):
class BackendError(Exception):
pass
class AbortTx(Exception):
pass

12
chainsyncer/filter.py
View File

@ -20,7 +20,12 @@ class SyncFilter:
logg.debug('added filter "{}"'.format(str(fltr)))
self.filters.append(fltr)
def apply_one(self, fltr, idx, conn, block, tx, session):
fltr.filter(conn, block, tx, session)
self.backend.complete_filter(idx)
def apply(self, conn, block, tx):
session = None
@ -33,16 +38,15 @@ class SyncFilter:
(pair, flags) = self.backend.get()
for f in self.filters:
if not self.backend.check_filter(i, flags):
#if flags & (1 << i) == 0:
logg.debug('applying filter {} {}'.format(str(f), flags))
f.filter(conn, block, tx, session)
self.backend.complete_filter(i)
self.apply_one(f, i, conn, block, tx, session)
else:
logg.debug('skipping previously applied filter {} {}'.format(str(f), flags))
i += 1
self.backend.disconnect()
class NoopFilter:
def filter(self, conn, block, tx, db_session=None):

96
chainsyncer/runnable/tracker.py
View File

@ -1,96 +0,0 @@
# standard imports
import os
import sys
import logging
import time
import argparse
import sys
import re
# external imports
import confini
from chainlib.eth.connection import HTTPConnection
from chainlib.eth.block import block_latest
from chainlib.chain import ChainSpec
# local imports
from chainsyncer.driver import HeadSyncer
from chainsyncer.db import dsn_from_config
from chainsyncer.db.models.base import SessionBase
from chainsyncer.backend import SyncerBackend
from chainsyncer.error import LoopDone
from chainsyncer.filter import NoopFilter
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
config_dir = '/usr/local/etc/cic-syncer'
argparser = argparse.ArgumentParser(description='daemon that monitors transactions in new blocks')
argparser.add_argument('-p', '--provider', dest='p', type=str, help='chain rpc provider address')
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('--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('--offset', type=int, help='block number to start sync')
argparser.add_argument('-q', type=str, default='cic-eth', help='celery queue to submit transaction tasks to')
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:])
if args.v == True:
logging.getLogger().setLevel(logging.INFO)
elif args.vv == True:
logging.getLogger().setLevel(logging.DEBUG)
config_dir = os.path.join(args.c)
config = confini.Config(config_dir, args.env_prefix)
config.process()
# override args
args_override = {
'SYNCER_CHAIN_SPEC': getattr(args, 'i'),
'ETH_PROVIDER': getattr(args, 'p'),
}
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))
#app = celery.Celery(backend=config.get('CELERY_RESULT_URL'), broker=config.get('CELERY_BROKER_URL'))
queue = args.q
dsn = dsn_from_config(config)
SessionBase.connect(dsn)
conn = HTTPConnection(config.get('ETH_PROVIDER'))
chain = ChainSpec.from_chain_str(config.get('SYNCER_CHAIN_SPEC'))
block_offset = args.offset
def main():
global block_offset
if block_offset == None:
o = block_latest()
r = conn.do(o)
block_offset = r[1]
syncer_backend = SyncerBackend.live(chain, 0)
syncer = HeadSyncer(syncer_backend)
fltr = NoopFilter()
syncer.add_filter(fltr)
try:
logg.debug('block offset {}'.format(block_offset))
syncer.loop(int(config.get('SYNCER_LOOP_INTERVAL')), conn)
except LoopDone as e:
sys.stderr.write("sync '{}' done at block {}\n".format(args.mode, e))
sys.exit(0)
if __name__ == '__main__':
main()

6
chainsyncer/unittest/base.py
View File

@ -6,7 +6,7 @@ import logging
from hexathon import add_0x
# local imports
from chainsyncer.driver import HistorySyncer
from chainsyncer.driver.history import HistorySyncer
from chainsyncer.error import NoBlockForYou
logg = logging.getLogger().getChild(__name__)
@ -44,9 +44,9 @@ class MockBlock:
class TestSyncer(HistorySyncer):
def __init__(self, backend, tx_counts=[]):
def __init__(self, backend, chain_interface, tx_counts=[]):
self.tx_counts = tx_counts
super(TestSyncer, self).__init__(backend)
super(TestSyncer, self).__init__(backend, chain_interface)
def get(self, conn):

55
chainsyncer/unittest/db.py Normal file
View File

@ -0,0 +1,55 @@
# standard imports
import logging
import os
# external imports
import alembic
import alembic.config
# local imports
from chainsyncer.db.models.base import SessionBase
from chainsyncer.db import dsn_from_config
from chainsyncer.db.models.base import SessionBase
logg = logging.getLogger(__name__)
class ChainSyncerDb:
base = SessionBase
def __init__(self, debug=False):
config = {
'DATABASE_ENGINE': 'sqlite',
'DATABASE_DRIVER': 'pysqlite',
'DATABASE_NAME': 'chainsyncer.sqlite',
}
logg.debug('config {}'.format(config))
self.dsn = dsn_from_config(config)
self.base.poolable = False
self.base.transactional = False
self.base.procedural = False
self.base.connect(self.dsn, debug=debug) # TODO: evaluates to "true" even if string is 0
rootdir = os.path.join(os.path.dirname(os.path.dirname(__file__)), '..')
dbdir = os.path.join(rootdir, 'chainsyncer', 'db')
#migrationsdir = os.path.join(dbdir, 'migrations', config.get('DATABASE_ENGINE'))
migrationsdir = os.path.join(dbdir, 'migrations', 'default')
logg.info('using migrations directory {}'.format(migrationsdir))
ac = alembic.config.Config(os.path.join(migrationsdir, 'alembic.ini'))
ac.set_main_option('sqlalchemy.url', self.dsn)
ac.set_main_option('script_location', migrationsdir)
alembic.command.downgrade(ac, 'base')
alembic.command.upgrade(ac, 'head')
def bind_session(self, session=None):
return self.base.bind_session(session)
def release_session(self, session=None):
return self.base.release_session(session)

6
requirements.txt
View File

@ -1,4 +1,4 @@
confini~=0.3.6rc3
confini>=0.3.6rc3,<0.5.0
semver==2.13.0
hexathon~=0.0.1a7
chainlib~=0.0.3rc2
hexathon~=0.0.1a8
chainlib>=0.0.9a2,<=0.1.0

12
run_tests.sh Normal file
View File

@ -0,0 +1,12 @@
#!/bin/bash
set -e
set -x
for f in `ls tests/*.py`; do
python $f
if [ $? -gt 0 ]; then
exit
fi
done
set +x
set +e

5
setup.cfg
View File

@ -1,6 +1,6 @@
[metadata]
name = chainsyncer
version = 0.0.2a5
version = 0.0.6a1
description = Generic blockchain syncer driver
author = Louis Holbrook
author_email = dev@holbrook.no
@ -26,10 +26,9 @@ python_requires = >= 3.6
packages =
chainsyncer
chainsyncer.db
chainsyncer.db.migrations
chainsyncer.db.models
chainsyncer.runnable
chainsyncer.backend
chainsyncer.driver
chainsyncer.unittest
[options.package_data]

12
sql/postgresql/1.sql
View File

@ -1,12 +0,0 @@
DROP TABLE IF EXISTS chain_sync CASCADE;
CREATE TABLE IF NOT EXISTS chain_sync (
id serial primary key not null,
blockchain varchar not null,
block_start int not null default 0,
tx_start int not null default 0,
block_cursor int not null default 0,
tx_cursor int not null default 0,
block_target int default null,
date_created timestamp not null,
date_updated timestamp default null
);

12
sql/postgresql/2.sql
View File

@ -1,12 +0,0 @@
DROP TABLE IF EXISTS chain_sync_filter;
CREATE TABLE IF NOT EXISTS chain_sync_filter (
id serial primary key not null,
chain_sync_id integer not null,
flags bytea default null,
flags_start bytea default null,
count integer not null default 0,
digest char(64) not null,
CONSTRAINT fk_chain_sync
FOREIGN KEY(chain_sync_id)
REFERENCES chain_sync(id)
);

11
sql/sqlite/1.sql
View File

@ -1,11 +0,0 @@
CREATE TABLE IF NOT EXISTS chain_sync (
id integer primary key autoincrement,
blockchain varchar not null,
block_start integer not null default 0,
tx_start integer not null default 0,
block_cursor integer not null default 0,
tx_cursor integer not null default 0,
block_target integer default null,
date_created timestamp not null,
date_updated timestamp default null
);

11
sql/sqlite/2.sql
View File

@ -1,11 +0,0 @@
CREATE TABLE IF NOT EXISTS chain_sync_filter (
id integer primary key autoincrement not null,
chain_sync_id integer not null,
flags bytea default null,
flags_start bytea default null,
count integer not null default 0,
digest char(64) not null,
CONSTRAINT fk_chain_sync
FOREIGN KEY(chain_sync_id)
REFERENCES chain_sync(id)
);

4
test_requirements.txt Normal file
View File

@ -0,0 +1,4 @@
chainlib-eth~=0.0.9a4
psycopg2==2.8.6
SQLAlchemy==1.3.20
alembic==1.4.2

54
tests/base.py
View File

@ -1,54 +0,0 @@
# standard imports
import logging
import unittest
import tempfile
import os
#import pysqlite
# external imports
from chainlib.chain import ChainSpec
# local imports
from chainsyncer.db import dsn_from_config
from chainsyncer.db.models.base import SessionBase
script_dir = os.path.realpath(os.path.dirname(__file__))
logging.basicConfig(level=logging.DEBUG)
class TestBase(unittest.TestCase):
def setUp(self):
db_dir = tempfile.mkdtemp()
self.db_path = os.path.join(db_dir, 'test.sqlite')
config = {
'DATABASE_ENGINE': 'sqlite',
'DATABASE_DRIVER': 'pysqlite',
'DATABASE_NAME': self.db_path,
}
dsn = dsn_from_config(config)
SessionBase.poolable = False
SessionBase.transactional = False
SessionBase.procedural = False
SessionBase.connect(dsn, debug=False)
f = open(os.path.join(script_dir, '..', 'sql', 'sqlite', '1.sql'), 'r')
sql = f.read()
f.close()
conn = SessionBase.engine.connect()
conn.execute(sql)
f = open(os.path.join(script_dir, '..', 'sql', 'sqlite', '2.sql'), 'r')
sql = f.read()
f.close()
conn = SessionBase.engine.connect()
conn.execute(sql)
self.chain_spec = ChainSpec('evm', 'foo', 42, 'bar')
def tearDown(self):
SessionBase.disconnect()
os.unlink(self.db_path)

57
tests/chainsyncer_base.py Normal file
View File

@ -0,0 +1,57 @@
# standard imports
import logging
import unittest
import tempfile
import os
#import pysqlite
# external imports
from chainlib.chain import ChainSpec
from chainlib.interface import ChainInterface
from chainlib.eth.tx import receipt
# local imports
from chainsyncer.db import dsn_from_config
from chainsyncer.db.models.base import SessionBase
# test imports
from chainsyncer.unittest.db import ChainSyncerDb
script_dir = os.path.realpath(os.path.dirname(__file__))
logging.basicConfig(level=logging.DEBUG)
class EthChainInterface(ChainInterface):
def __init__(self):
self._tx_receipt = receipt
class TestBase(unittest.TestCase):
interface = EthChainInterface()
def setUp(self):
self.db = ChainSyncerDb()
#f = open(os.path.join(script_dir, '..', 'sql', 'sqlite', '1.sql'), 'r')
#sql = f.read()
#f.close()
#conn = SessionBase.engine.connect()
#conn.execute(sql)
#f = open(os.path.join(script_dir, '..', 'sql', 'sqlite', '2.sql'), 'r')
#sql = f.read()
#f.close()
#conn = SessionBase.engine.connect()
#conn.execute(sql)
self.session = self.db.bind_session()
self.chain_spec = ChainSpec('evm', 'foo', 42, 'bar')
def tearDown(self):
self.session.commit()
self.db.release_session(self.session)
#os.unlink(self.db_path)

2
tests/test_basic.py
View File

@ -8,7 +8,7 @@ from chainlib.chain import ChainSpec
from chainsyncer.backend.memory import MemBackend
# testutil imports
from tests.base import TestBase
from tests.chainsyncer_base import TestBase
class TestBasic(TestBase):

2
tests/test_database.py
View File

@ -11,7 +11,7 @@ from chainsyncer.db.models.filter import BlockchainSyncFilter
from chainsyncer.backend.sql import SQLBackend
# testutil imports
from tests.base import TestBase
from tests.chainsyncer_base import TestBase
logg = logging.getLogger()

15
tests/test_helo.py Normal file
View File

@ -0,0 +1,15 @@
# standard imports
import unittest
# local imports
from tests.chainsyncer_base import TestBase
class TestHelo(TestBase):
def test_helo(self):
pass
if __name__ == '__main__':
unittest.main()

12
tests/test_interrupt.py
View File

@ -16,7 +16,7 @@ from chainsyncer.backend.file import (
)
# test imports
from tests.base import TestBase
from tests.chainsyncer_base import TestBase
from chainsyncer.unittest.base import (
MockBlock,
MockConn,
@ -77,7 +77,7 @@ class TestInterrupt(TestBase):
]
def assert_filter_interrupt(self, vector):
def assert_filter_interrupt(self, vector, chain_interface):
logg.debug('running vector {} {}'.format(str(self.backend), vector))
@ -85,7 +85,7 @@ class TestInterrupt(TestBase):
for v in vector:
z += v
syncer = TestSyncer(self.backend, vector)
syncer = TestSyncer(self.backend, chain_interface, vector)
filters = [
CountFilter('foo'),
@ -114,7 +114,7 @@ class TestInterrupt(TestBase):
def test_filter_interrupt_memory(self):
for vector in self.vectors:
self.backend = MemBackend(self.chain_spec, None, target_block=len(vector))
self.assert_filter_interrupt(vector)
self.assert_filter_interrupt(vector, self.interface)
def test_filter_interrupt_file(self):
@ -123,13 +123,13 @@ class TestInterrupt(TestBase):
d = tempfile.mkdtemp()
#os.makedirs(data_dir_for(self.chain_spec, 'foo', d))
self.backend = FileBackend.initial(self.chain_spec, len(vector), base_dir=d) #'foo', base_dir=d)
self.assert_filter_interrupt(vector)
self.assert_filter_interrupt(vector, self.interface)
def test_filter_interrupt_sql(self):
for vector in self.vectors:
self.backend = SQLBackend.initial(self.chain_spec, len(vector))
self.assert_filter_interrupt(vector)
self.assert_filter_interrupt(vector, self.interface)