WIP implement tasker (replacement for server.py)

chaind/eth/runnable/old/resend.py

@@ -0,0 +1,108 @@
+# standard imports
+import os
+import logging
+import sys
+import datetime
+import enum
+import re
+import stat
+
+# external imports
+import chainlib.eth.cli
+from chaind import Environment
+from chainlib.eth.gas import price
+from chainlib.chain import ChainSpec
+from hexathon import strip_0x
+from eth_token_index.index import TokenUniqueSymbolIndex
+
+# local imports
+from chaind_eth.cli.retry import Retrier
+from chaind.error import TxSourceError
+from chaind_eth.cli.output import (
+        Outputter,
+        OpMode,
+        )
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__)) 
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+
+arg_flags = chainlib.eth.cli.argflag_std_write
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--socket', dest='socket', type=str, help='Socket to send transactions to')
+argparser.add_positional('source', required=False, type=str, help='Transaction source file')
+args = argparser.parse_args()
+
+extra_args = {
+        'socket': None,
+        'source': None,
+        }
+
+env = Environment(domain='eth', env=os.environ)
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+wallet = chainlib.eth.cli.Wallet()
+wallet.from_config(config)
+
+rpc = chainlib.eth.cli.Rpc(wallet=wallet)
+conn = rpc.connect_by_config(config)
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+
+mode = OpMode.STDOUT
+re_unix = r'^ipc://(/.+)'
+m = re.match(re_unix, config.get('_SOCKET', ''))
+if m != None:
+    config.add(m.group(1), '_SOCKET', exists_ok=True)
+    r = 0
+    try:
+        stat_info = os.stat(config.get('_SOCKET'))
+        if not stat.S_ISSOCK(stat_info.st_mode):
+            r = 1
+    except FileNotFoundError:
+        r = 1
+
+    if r > 0:
+        sys.stderr.write('{} is not a socket\n'.format(config.get('_SOCKET')))
+        sys.exit(1)
+    
+    mode = OpMode.UNIX
+
+logg.info('using mode {}'.format(mode.value))
+
+if config.get('_SOURCE') == None:
+    sys.stderr.write('source data missing\n')
+    sys.exit(1)
+
+
+def main():
+    signer = rpc.get_signer()
+
+    # TODO: make resolvers pluggable
+    processor = Retrier(wallet.get_signer_address(), wallet.get_signer(), config.get('_SOURCE'), chain_spec, rpc.get_gas_oracle())
+
+    sends = None
+    try:
+        sends = processor.load()
+    except TxSourceError as e:
+        sys.stderr.write('processing error: {}. processors: {}\n'.format(str(e), str(processor)))
+        sys.exit(1)
+
+    tx_iter = iter(processor)
+    out = Outputter(mode)
+    while True:
+        tx = None
+        try:
+            tx_bytes = next(tx_iter)
+        except StopIteration:
+            break
+        tx_hex = tx_bytes.hex()
+        print(out.do(tx_hex, socket=config.get('_SOCKET')))
+
+
+if __name__ == '__main__':
+    main()

chaind/eth/runnable/old/retry.py

@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import os
+import logging
+import sys
+import datetime
+
+# external imports
+from hexathon import (
+        add_0x,
+        strip_0x,
+        )
+from chaind import Environment
+import chainlib.eth.cli
+from chainlib.chain import ChainSpec
+from chainqueue.db import dsn_from_config
+from chainqueue.sql.backend import SQLBackend
+from chainqueue.enum import StatusBits
+from chaind.sql.session import SessionIndex
+from chainqueue.adapters.eth import EthAdapter
+from chainlib.eth.gas import price
+from chainlib.eth.connection import EthHTTPConnection
+from crypto_dev_signer.eth.transaction import EIP155Transaction
+
+DEFAULT_GAS_FACTOR = 1.1
+
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__)) 
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+arg_flags = chainlib.eth.cli.argflag_std_write
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--backend', type=str, default='sql', help='Backend to use (currently only "sql")')
+argparser.add_positional('session_id', required=False, type=str, help='Ethereum address of recipient')
+args = argparser.parse_args()
+extra_args = {
+    'backend': None,
+    'session_id': 'SESSION_ID',
+        }
+
+env = Environment(domain='eth', env=os.environ)
+
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+if config.get('SESSION_DATA_DIR') == None:
+    config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+tx_getter = None
+session_method = None
+if config.get('_BACKEND') == 'sql':
+    from chainqueue.sql.query import get_tx_cache as tx_getter
+    from chainqueue.runnable.sql import setup_backend
+    from chainqueue.db.models.base import SessionBase
+    setup_backend(config, debug=config.true('DATABASE_DEBUG'))
+    session_method = SessionBase.create_session
+else:
+    raise NotImplementedError('backend {} not implemented'.format(config.get('_BACKEND')))
+
+if config.get('DATABASE_ENGINE') == 'sqlite':
+    config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+ 
+wallet = chainlib.eth.cli.Wallet()
+wallet.from_config(config)
+
+rpc = chainlib.eth.cli.Rpc(wallet=wallet)
+conn = rpc.connect_by_config(config)
+
+dsn = dsn_from_config(config)
+backend = SQLBackend(dsn, debug=config.true('DATABASE_DEBUG'), error_parser=rpc.error_parser)
+session_index_backend = SessionIndex(config.get('SESSION_ID'))
+adapter = EthAdapter(backend, session_index_backend=session_index_backend)
+
+
+def main():
+    before = datetime.datetime.utcnow() - adapter.pending_retry_threshold
+    txs = session_index_backend.get(chain_spec, adapter, status=StatusBits.IN_NETWORK, not_status=StatusBits.FINAL | StatusBits.OBSOLETE, before=before)
+
+    o = price()
+    r = conn.do(o, error_parser=rpc.error_parser)
+    gas_price = strip_0x(r)
+    try:
+        gas_price = int(gas_price, 16)
+    except ValueError:
+        gas_price = int(gas_price)
+    logg.info('got current gas price {}'.format(gas_price))
+
+    signer = rpc.get_signer()
+
+    db_session = adapter.create_session()
+    for tx_hash in txs:
+        tx_bytes = bytes.fromhex(strip_0x(txs[tx_hash]))
+        tx = adapter.translate(tx_bytes, chain_spec)
+        tx_gas_price = int(tx['gasPrice'])
+        if tx_gas_price < gas_price:
+            tx['gasPrice'] = gas_price
+        else:
+            tx['gasPrice'] = int(tx['gasPrice'] * DEFAULT_GAS_FACTOR)
+        tx_obj = EIP155Transaction(tx, tx['nonce'], chain_spec.chain_id())
+        new_tx_bytes = signer.sign_transaction_to_wire(tx_obj)
+        logg.debug('add tx {} with gas price changed from {} to {}: {}'.format(tx_hash, tx_gas_price, tx['gasPrice'], new_tx_bytes.hex()))
+        adapter.add(new_tx_bytes, chain_spec, session=db_session)
+
+    db_session.close()
+
+
+if __name__ == '__main__':
+    main()

chaind/eth/runnable/old/send.py

@@ -0,0 +1,152 @@
+# standard imports
+import os
+import logging
+import sys
+import datetime
+import enum
+import re
+import stat
+import socket
+
+# external imports
+import chainlib.eth.cli
+from chaind import Environment
+from chainlib.eth.gas import price
+from chainlib.chain import ChainSpec
+from hexathon import strip_0x
+
+# local imports
+from chaind_eth.cli.process import Processor
+from chaind_eth.cli.csv import CSVProcessor
+from chaind.error import TxSourceError
+from chaind_eth.cli.resolver import (
+        DefaultResolver,
+        LookNoop,
+        TokenIndexLookup,
+        )
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__)) 
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+
+arg_flags = chainlib.eth.cli.argflag_std_write
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--socket', dest='socket', type=str, help='Socket to send transactions to')
+argparser.add_argument('--token-index', dest='token_index', type=str, help='Token resolver index')
+argparser.add_positional('source', required=False, type=str, help='Transaction source file')
+args = argparser.parse_args()
+
+extra_args = {
+        'socket': None,
+        'source': None,
+        'token_index': None,
+        }
+
+env = Environment(domain='eth', env=os.environ)
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+wallet = chainlib.eth.cli.Wallet()
+wallet.from_config(config)
+
+rpc = chainlib.eth.cli.Rpc(wallet=wallet)
+conn = rpc.connect_by_config(config)
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+class OpMode(enum.Enum):
+    STDOUT = 'standard_output'
+    UNIX = 'unix_socket'
+mode = OpMode.STDOUT
+
+re_unix = r'^ipc://(/.+)'
+m = re.match(re_unix, config.get('_SOCKET', ''))
+if m != None:
+    config.add(m.group(1), '_SOCKET', exists_ok=True)
+    r = 0
+    try:
+        stat_info = os.stat(config.get('_SOCKET'))
+        if not stat.S_ISSOCK(stat_info.st_mode):
+            r = 1
+    except FileNotFoundError:
+        r = 1
+
+    if r > 0:
+        sys.stderr.write('{} is not a socket\n'.format(config.get('_SOCKET')))
+        sys.exit(1)
+    
+    mode = OpMode.UNIX
+
+logg.info('using mode {}'.format(mode.value))
+
+if config.get('_SOURCE') == None:
+    sys.stderr.write('source data missing\n')
+    sys.exit(1)
+
+
+class Outputter:
+
+    def __init__(self, mode):
+        self.out = getattr(self, 'do_' + mode.value)
+
+
+    def do(self, hx):
+        return self.out(hx)
+
+
+    def do_standard_output(self, hx):
+        #sys.stdout.write(hx + '\n')
+        return hx
+
+
+    def do_unix_socket(self, hx):
+        s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        s.connect(config.get('_SOCKET'))
+        s.send(hx.encode('utf-8'))
+        r = s.recv(64+4)
+        logg.debug('r {}'.format(r))
+        s.close()
+        return r[4:].decode('utf-8')
+
+
+def main():
+    signer = rpc.get_signer()
+
+
+    # TODO: make resolvers pluggable
+    token_resolver = DefaultResolver(chain_spec, conn, sender_address=rpc.get_sender_address())
+
+    noop_lookup = LookNoop(check=not config.true('_UNSAFE'))
+    token_resolver.add_lookup(noop_lookup, 'noop')
+  
+    if config.get('_TOKEN_INDEX') != None:
+        token_index_lookup = TokenIndexLookup(chain_spec, signer, rpc.get_gas_oracle(), rpc.get_nonce_oracle(), config.get('_TOKEN_INDEX'))
+        token_resolver.add_lookup(token_index_lookup, reverse=config.get('_TOKEN_INDEX'))
+    
+    processor = Processor(wallet.get_signer_address(), wallet.get_signer(), config.get('_SOURCE'), chain_spec, rpc.get_gas_oracle(), rpc.get_nonce_oracle(), resolver=token_resolver)
+    processor.add_processor(CSVProcessor())
+
+    sends = None
+    try:
+        sends = processor.load()
+    except TxSourceError as e:
+        sys.stderr.write('processing error: {}. processors: {}\n'.format(str(e), str(processor)))
+        sys.exit(1)
+
+
+    tx_iter = iter(processor)
+    out = Outputter(mode)
+    while True:
+        tx = None
+        try:
+            tx_bytes = next(tx_iter)
+        except StopIteration:
+            break
+        tx_hex = tx_bytes.hex()
+        print(out.do(tx_hex))
+
+
+if __name__ == '__main__':
+    main()

chaind/eth/runnable/old/server.py

@@ -0,0 +1,215 @@
+# standard imports
+import sys
+import time
+import socket
+import signal
+import os
+import logging
+import stat
+import argparse
+
+# external imports
+import chainlib.eth.cli
+from chaind import Environment
+from hexathon import strip_0x
+from chainlib.chain import ChainSpec
+from chainlib.eth.connection import EthHTTPConnection
+from chainqueue.sql.backend import SQLBackend
+from chainlib.error import JSONRPCException
+from chainqueue.db import dsn_from_config
+from chaind.sql.session import SessionIndex
+
+# local imports
+from chaind_eth.dispatch import Dispatcher
+from chainqueue.adapters.eth import EthAdapter
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+env = Environment(domain='eth', env=os.environ)
+
+arg_flags = chainlib.eth.cli.argflag_std_read
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--data-dir', type=str, help='data directory')
+argparser.add_argument('--runtime-dir', type=str, help='runtime directory')
+argparser.add_argument('--session-id', dest='session_id', type=str, help='session identifier')
+argparser.add_argument('--dispatch-delay', dest='dispatch_delay', type=float, help='socket timeout before processing queue')
+args = argparser.parse_args()
+extra_args = {
+    'runtime_dir': 'SESSION_RUNTIME_DIR',
+    'data_dir': 'SESSION_DATA_DIR',
+    'session_id': 'SESSION_ID', 
+    'dispatch_delay': 'SESSION_DISPATCH_DELAY',
+        }
+#config = chainlib.eth.cli.Config.from_args(args, arg_flags, default_config_dir=config_dir, extend_base_config_dir=config_dir)
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
+if config.get('SESSION_ID') == None:
+    config.add(env.session, 'SESSION_ID', exists_ok=True)
+if config.get('SESSION_RUNTIME_DIR') == None:
+    config.add(env.runtime_dir, 'SESSION_RUNTIME_DIR', exists_ok=True)
+if config.get('SESSION_DATA_DIR') == None:
+    config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
+if not config.get('SESSION_SOCKET_PATH'):
+    socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
+    config.add(socket_path, 'SESSION_SOCKET_PATH', True)
+
+if config.get('DATABASE_ENGINE') == 'sqlite':
+    #config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+    config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+    
+config.censor('PASSWORD', 'DATABASE')
+logg.debug('config loaded:\n{}'.format(config))
+
+
+# verify setup
+try:
+    os.stat(config.get('DATABASE_NAME'))
+except FileNotFoundError:
+    sys.stderr.write('database file {} not found. please run database migration script first\n'.format(config.get('DATABASE_NAME')))
+    sys.exit(1)
+
+
+class SessionController:
+
+    def __init__(self, config):
+        self.dead = False
+        os.makedirs(os.path.dirname(config.get('SESSION_SOCKET_PATH')), exist_ok=True)
+        try:
+            os.unlink(config.get('SESSION_SOCKET_PATH'))
+        except FileNotFoundError:
+            pass
+
+        self.srv = socket.socket(family=socket.AF_UNIX, type=socket.SOCK_STREAM)
+        self.srv.bind(config.get('SESSION_SOCKET_PATH'))
+        self.srv.listen(2)
+        self.srv.settimeout(float(config.get('SESSION_DISPATCH_DELAY')))
+
+
+    def shutdown(self, signo, frame):
+        if self.dead:
+            return
+        self.dead = True
+        if signo != None:
+            logg.info('closing on {}'.format(signo))
+        else:
+            logg.info('explicit shutdown')
+        sockname = self.srv.getsockname()
+        self.srv.close()
+        try:
+            os.unlink(sockname)
+        except FileNotFoundError:
+            logg.warning('socket file {} already gone'.format(sockname))
+
+
+    def get_connection(self):
+        return self.srv.accept()
+
+
+ctrl = SessionController(config)
+
+signal.signal(signal.SIGINT, ctrl.shutdown)
+signal.signal(signal.SIGTERM, ctrl.shutdown)
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+rpc = chainlib.eth.cli.Rpc()
+conn = rpc.connect_by_config(config)
+
+dsn = dsn_from_config(config)
+backend = SQLBackend(dsn, error_parser=rpc.error_parser, debug=config.true('DATABASE_DEBUG'))
+session_index_backend = SessionIndex(config.get('SESSION_ID'))
+adapter = EthAdapter(backend, session_index_backend=session_index_backend)
+
+
+def process_outgoing(chain_spec, adapter, rpc, limit=100):
+    dispatcher = Dispatcher(chain_spec, adapter, limit=limit)
+    session = adapter.create_session()
+    r = dispatcher.process(rpc, session)
+    session.close()
+    return r
+
+
+def main():
+    while True:
+        srvs = None
+        try:
+            logg.debug('getting connection')
+            (srvs, srvs_addr) = ctrl.get_connection()
+        except OSError as e:
+            try:
+                fi = os.stat(config.get('SESSION_SOCKET_PATH'))
+            except FileNotFoundError:
+                logg.error('socket is gone')
+                break
+            if not stat.S_ISSOCK(fi.st_mode):
+                logg.error('entity on socket path is not a socket')
+                break
+            if srvs == None:
+                logg.debug('timeout (remote socket is none)')
+                r = process_outgoing(chain_spec, adapter, conn)
+                if r > 0:
+                    ctrl.srv.settimeout(0.1)
+                else:
+                    ctrl.srv.settimeout(4.0)
+                continue
+        ctrl.srv.settimeout(0.1)
+        srvs.settimeout(0.1)
+        data_in = None
+        try:
+            data_in = srvs.recv(1048576)
+        except BlockingIOError as e:
+            logg.debug('block io error: {}'.format(e))
+            continue
+
+        data = None
+        try:
+            data_in_str = data_in.decode('utf-8')
+            data_hex = strip_0x(data_in_str.rstrip())
+            data = bytes.fromhex(data_hex)
+        except ValueError:
+            logg.error('invalid input "{}"'.format(data_in_str))
+            continue
+
+        logg.debug('recv {} bytes'.format(len(data)))
+        session = backend.create_session()
+        tx_hash = None
+        signed_tx = None
+        try:
+            tx_hash = adapter.add(data_hex, chain_spec, session=session)
+        except ValueError as e:
+            try:
+                signed_tx = adapter.get(data_hex, chain_spec, session=session) 
+            except ValueError as e:
+                logg.error('invalid input: {}'.format(e))
+
+        if tx_hash != None:
+            session.commit()
+            try:
+                r = int(0).to_bytes(4, byteorder='big')
+                r += strip_0x(tx_hash).encode('utf-8')
+                srvs.send(r)
+                logg.debug('{} bytes sent'.format(r))
+            except BrokenPipeError:
+                logg.debug('they just hung up. how rude.')
+        elif signed_tx != None:
+            r = int(0).to_bytes(4, byteorder='big')
+            r += strip_0x(signed_tx).encode('utf-8')
+            try:
+                r = srvs.send(r)
+            except BrokenPipeError:
+                logg.debug('they just hung up. how useless.')
+        else:
+            r = srvs.send(int(1).to_bytes(4, byteorder='big'))
+
+        session.close()
+        srvs.close()
+
+    ctrl.shutdown(None, None)
+
+if __name__ == '__main__':
+    main()

chaind/eth/runnable/old/syncer.py

@@ -0,0 +1,141 @@
+# standard imports
+import sys
+import time
+import socket
+import signal
+import os
+import logging
+import stat
+import argparse
+import uuid
+
+# external imports
+import chainlib.eth.cli
+from chaind import Environment
+import confini
+from hexathon import strip_0x
+from chainlib.chain import ChainSpec
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.block import block_latest
+from chainsyncer.driver.head import HeadSyncer
+from chainsyncer.driver.history import HistorySyncer
+from chainsyncer.db import dsn_from_config
+from chainsyncer.db.models.base import SessionBase
+from chainsyncer.backend.sql import SQLBackend
+from chainsyncer.error import SyncDone
+
+# local imports
+from chaind_eth.filter import StateFilter
+from chaind_eth.chain import EthChainInterface
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+env = Environment(domain='eth', env=os.environ)
+
+arg_flags = chainlib.eth.cli.argflag_std_read
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--data-dir', type=str, help='data directory')
+argparser.add_argument('--runtime-dir', type=str, help='runtime directory')
+argparser.add_argument('--session-id', dest='session_id', type=str, help='session identifier')
+argparser.add_argument('--offset', default=0, type=int, help='block height to sync history from')
+args = argparser.parse_args()
+extra_args = {
+    'runtime_dir': 'SESSION_RUNTIME_DIR',
+    'data_dir': 'SESSION_DATA_DIR',
+    'session_id': 'SESSION_ID', 
+    'offset': 'SYNCER_HISTORY_START',
+        }
+#config = chainlib.eth.cli.Config.from_args(args, arg_flags, default_config_dir=config_dir, extend_base_config_dir=config_dir)
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=[config_dir, os.path.join(config_dir, 'syncer')])
+
+logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
+if config.get('SESSION_ID') == None:
+    config.add(env.session, 'SESSION_ID', exists_ok=True)
+if config.get('SESSION_RUNTIME_DIR') == None:
+    config.add(env.runtime_dir, 'SESSION_RUNTIME_DIR', exists_ok=True)
+if config.get('SESSION_DATA_DIR') == None:
+    config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
+if not config.get('SESSION_SOCKET_PATH'):
+    socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
+    config.add(socket_path, 'SESSION_SOCKET_PATH', True)
+
+if config.get('DATABASE_ENGINE') == 'sqlite':
+    config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+    
+config.censor('PASSWORD', 'DATABASE')
+logg.debug('config loaded:\n{}'.format(config))
+
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+dsn = dsn_from_config(config)
+logg.debug('dns {}'.format(dsn))
+SQLBackend.setup(dsn, debug=config.true('DATABASE_DEBUG'))
+rpc = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
+
+def register_filter_tags(filters, session):
+    for f in filters:
+        tag = f.tag()
+        try:
+            add_tag(session, tag[0], domain=tag[1])
+            session.commit()
+            logg.info('added tag name "{}" domain "{}"'.format(tag[0], tag[1]))
+        except sqlalchemy.exc.IntegrityError:
+            session.rollback()
+            logg.debug('already have tag name "{}" domain "{}"'.format(tag[0], tag[1]))
+
+
+def main():
+    o = block_latest()
+    r = rpc.do(o)
+    block_offset = int(strip_0x(r), 16) + 1
+
+    syncers = []
+
+    syncer_backends = SQLBackend.resume(chain_spec, block_offset)
+
+    if len(syncer_backends) == 0:
+        initial_block_start = config.get('SYNCER_HISTORY_START', 0)
+        if isinstance(initial_block_start, str):
+            initial_block_start = int(initial_block_start)
+        initial_block_offset = block_offset
+        if config.true('SYNCER_SKIP_HISTORY'):
+            initial_block_start = block_offset
+            initial_block_offset += 1
+        syncer_backends.append(SQLBackend.initial(chain_spec, initial_block_offset, start_block_height=initial_block_start))
+        logg.info('found no backends to resume, adding initial sync from history start {} end {}'.format(initial_block_start, initial_block_offset))
+    else:
+        for syncer_backend in syncer_backends:
+            logg.info('resuming sync session {}'.format(syncer_backend))
+
+    chain_interface = EthChainInterface()
+    for syncer_backend in syncer_backends:
+        syncers.append(HistorySyncer(syncer_backend, chain_interface))
+
+    syncer_backend = SQLBackend.live(chain_spec, block_offset+1)
+    syncers.append(HeadSyncer(syncer_backend, chain_interface))
+
+    state_filter = StateFilter(chain_spec)
+    filters = [
+        state_filter,
+            ]
+
+    i = 0
+    for syncer in syncers:
+        logg.debug('running syncer index {}'.format(i))
+        for f in filters:
+            syncer.add_filter(f)
+        r = syncer.loop(int(config.get('SYNCER_LOOP_INTERVAL')), rpc)
+        sys.stderr.write("sync {} done at block {}\n".format(syncer, r))
+
+        i += 1
+
+    sys.exit(0)
+
+
+if __name__ == '__main__':
+    main()

chaind/eth/runnable/tasker.py

@@ -0,0 +1,128 @@
+# standard imports
+import os
+import logging
+import signal
+
+# external imports
+import chainlib.eth.cli
+from chaind.session import SessionController
+from chaind.setup import Environment
+from chaind.error import (
+        NothingToDoError,
+        ClientGoneError,
+        ClientBlockError,
+        ClientInputError,
+        )
+from chainqueue import (
+        Store,
+        Status,
+        )
+from chainqueue.store.fs import (
+        IndexStore,
+        CounterStore,
+        )
+from chainqueue.cache import CacheTokenTx
+from chainlib.encode import TxHexNormalizer
+from chainlib.chain import ChainSpec
+from chaind.adapters.fs import ChaindFsAdapter
+
+# local imports
+from chaind.eth.dispatch import EthDispatcher
+from chaind.eth.cache import EthCacheTx
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+config_dir = os.path.join(script_dir, '..', 'data', 'config')
+
+env = Environment(domain='eth', env=os.environ)
+
+arg_flags = chainlib.eth.cli.argflag_std_read
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_argument('--data-dir', type=str, help='data directory')
+argparser.add_argument('--runtime-dir', type=str, help='runtime directory')
+argparser.add_argument('--session-id', dest='session_id', type=str, help='session identifier')
+argparser.add_argument('--dispatch-delay', dest='dispatch_delay', type=float, help='socket timeout before processing queue')
+args = argparser.parse_args()
+extra_args = {
+    'runtime_dir': 'SESSION_RUNTIME_DIR',
+    'data_dir': 'SESSION_DATA_DIR',
+    'session_id': 'SESSION_ID', 
+    'dispatch_delay': 'SESSION_DISPATCH_DELAY',
+        }
+#config = chainlib.eth.cli.Config.from_args(args, arg_flags, default_config_dir=config_dir, extend_base_config_dir=config_dir)
+config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
+
+logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
+if config.get('SESSION_ID') == None:
+    config.add(env.session, 'SESSION_ID', exists_ok=True)
+if config.get('SESSION_RUNTIME_DIR') == None:
+    config.add(env.runtime_dir, 'SESSION_RUNTIME_DIR', exists_ok=True)
+if config.get('SESSION_DATA_DIR') == None:
+    config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
+if not config.get('SESSION_SOCKET_PATH'):
+    socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
+    config.add(socket_path, 'SESSION_SOCKET_PATH', True)
+
+if config.get('DATABASE_ENGINE') == 'sqlite':
+    #config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+    config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
+    
+config.censor('PASSWORD', 'DATABASE')
+logg.debug('config loaded:\n{}'.format(config))
+
+def process_outgoing(chain_spec, adapter, rpc, limit=100):
+    upcoming = adapter.upcoming()
+    logg.info('process {} {} {}'.format(chain_spec, adapter, rpc))
+    logg.info('upcoming {}'.format(upcoming))
+    i = 0
+    for tx_hash in upcoming:
+        if adapter.dispatch(tx_hash):
+            i += 1
+    return i
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+rpc = chainlib.eth.cli.Rpc()
+conn = rpc.connect_by_config(config)
+
+tx_normalizer = TxHexNormalizer().tx_hash
+token_cache_store = CacheTokenTx(chain_spec, normalizer=tx_normalizer)
+dispatcher = EthDispatcher(conn)
+queue_adapter = ChaindFsAdapter(
+        chain_spec,
+        config.get('SESSION_DATA_DIR'),
+        EthCacheTx,
+        dispatcher,
+        )
+
+ctrl = SessionController(config, queue_adapter, process_outgoing)
+signal.signal(signal.SIGINT, ctrl.shutdown)
+signal.signal(signal.SIGTERM, ctrl.shutdown)
+
+
+def main():
+    while True:
+        r = None
+        try:
+            r = ctrl.get()
+        except ClientGoneError:
+            break
+        except ClientBlockError:
+            continue
+        except ClientInputError:
+            continue
+        except NothingToDoError:
+            pass
+
+        if r == None:
+            ctrl.process(conn)
+            continue
+
+        tx_hash = queue_adapter.put(r.hex())
+        queue_adapter.enqueue(tx_hash)
+
+
+if __name__ == '__main__':
+    main()

requirements.txt

@@ -1,4 +1,6 @@
 #chaind~=0.1.0
 hexathon~=0.1.5
 chainlib-eth>=0.1.0b3,<=0.1.0
+pyxdg~=0.27
 #eth-token-index~=0.2.4
+shep~=0.1.1