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Add test for tx put, block put

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- 0.1.0
* Factor out from eth-monitor

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may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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MANIFEST.in Normal file
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include *requirements.txt

45
eth_cache/account.py
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# external imports
from hexathon import strip_0x
class AccountRegistry:
def __init__(self):
self.senders = {}
self.recipients = {}
def __normalize_address(self, address):
return bytes.fromhex(strip_0x(address))
def add(self, address, label):
self.add_sender(address, label)
self.add_recipient(address, label)
def add_sender(self, address, label):
a = self.__normalize_address(address)
self.senders[a] = label
def add_recipient(self, address, label):
a = self.__normalize_address(address)
self.recipients[a] = label
def have(self, address):
if self.get_sender(address) != None:
return True
if self.get_recipient(address) != None:
return True
return False
def get_sender(self, address):
a = self.__normalize_address(address)
return self.senders.get(a)
def get_recipient(self, address):
a = self.__normalize_address(address)
return self.recipients.get(a)

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eth_cache/filter.py
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class GasFilter:
def __init__(self, store):
def filter(self, conn, block, tx, session):
self.store.put()

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# standard imports
import json
import logging
# external imports
from jsonrpc_std.parse import jsonrpc_from_dict
from hexathon import strip_0x
logg = logging.getLogger(__name__)
class CacheRPC:
def __init__(self, rpc, store):
self.rpc = rpc
self.store = store
def do(self, o):
req = jsonrpc_from_dict(o)
r = None
if req['method'] == 'eth_getBlockByNumber':
block_number = req['params'][0]
v = int(strip_0x(block_number), 16)
try:
j = self.store.get_block_number(v)
r = json.loads(j)
logg.debug('using cached block {} -> {}'.format(v, r['hash']))
except FileNotFoundError:
pass
elif req['method'] == 'eth_getBlockByHash':
block_hash = req['params'][0]
v = strip_0x(block_hash)
try:
j = self.store.get_block(v)
r = json.loads(j)
logg.debug('using cached block {}'.format(r['hash']))
except FileNotFoundError as e:
logg.debug('not found {}'.format(e))
pass
elif req['method'] == 'eth_getTransactionReceipt':
tx_hash = req['params'][0]
j = None
try:
tx_hash = strip_0x(tx_hash)
j = self.store.get_rcpt(tx_hash)
r = json.loads(j)
logg.debug('using cached rcpt {}'.format(tx_hash))
except FileNotFoundError as e:
logg.debug('no file {}'.format(e))
pass
# elif req['method'] == 'eth_getTransactionByHash':
# raise ValueError(o)
# elif req['method'] == 'eth_getTransactionByBlockHashAndIndex':
# logg.debug('trying tx index {}'.format(o))
# v = req['params'][0]
# j = None
# try:
# j = self.store.get_block(v)
# except FileNotFoundError:
# pass
#
# if j != None:
# o = json.loads(j)
# idx = int(req['params'][1], 16)
# v = r['transactions'][idx]
# j = None
# try:
# j = self.store.get_tx(v)
# except FileNotFoundError:
# pass
#
# if j != None:
# r = json.loads(j)
# logg.debug('using cached tx {} -> {}'.format(req['params'], r['hash']))
if r == None:
logg.debug('passthru {}'.format(o))
r = self.rpc.do(o)
return r

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eth_cache/runnable/get.py
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# SPDX-License-Identifier: GPL-3.0-or-later
# standard imports
import sys
import os
import argparse
import logging
import select
# external imports
from chainlib.chain import ChainSpec
from chainlib.eth.connection import EthHTTPConnection
from chainlib.eth.tx import (
pack,
receipt,
transaction,
Tx,
)
from chainlib.eth.block import (
Block,
block_by_hash,
)
from hexathon import strip_0x
# local imports
from eth_cache.store import (
PointerHexDir,
TxFileStore,
)
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
default_eth_provider = os.environ.get('ETH_PROVIDER', 'http://localhost:8545')
default_data_dir = os.path.realpath(os.path.join(os.environ.get('HOME', ''), '.eth_cache'))
def stdin_arg(t=0):
h = select.select([sys.stdin], [], [], t)
if len(h[0]) > 0:
v = h[0][0].read()
return v.rstrip()
return None
argparser = argparse.ArgumentParser('eth-get', description='display information about an Ethereum address or transaction', epilog='address/transaction can be provided as an argument or from standard input')
argparser.add_argument('-p', '--provider', dest='p', default=default_eth_provider, type=str, help='Web3 provider url (http only)')
argparser.add_argument('-i', '--chain-spec', dest='i', type=str, default='evm:ethereum:1', help='Chain specification string')
argparser.add_argument('-v', action='store_true', help='Be verbose')
argparser.add_argument('-vv', action='store_true', help='Be more verbose')
argparser.add_argument('--data-dir', dest='data_dir', type=str, help='Be more verbose')
argparser.add_argument('tx_hash', nargs='?', default=stdin_arg(), type=str, help='Item to get information for (address og transaction)')
args = argparser.parse_args()
if args.vv:
logg.setLevel(logging.DEBUG)
elif args.v:
logg.setLevel(logging.INFO)
tx_hash = args.tx_hash
if tx_hash == None:
tx_hash = stdin_arg(t=None)
if tx_hash == None:
argparser.error('need first positional argument or value from stdin')
chain_spec = ChainSpec.from_chain_str(args.i)
data_dir = args.data_dir
if data_dir == None:
data_dir = os.path.join(default_data_dir, str(chain_spec))
rpc_provider = args.p
if __name__ == '__main__':
rpc = EthHTTPConnection(rpc_provider)
o = transaction(tx_hash)
r = rpc.do(o)
tx = Tx(r)
tx_raw = pack(tx.src, chain_spec)
o = receipt(tx_hash)
r = rpc.do(o)
tx.apply_receipt(r)
rcpt = Tx.src_normalize(r)
o = block_by_hash(rcpt['block_hash'])
r = rpc.do(o)
block = Block(r)
tx.apply_block(block)
store_backend = PointerHexDir(data_dir, 32)
store_backend.register_pointer('address')
store = TxFileStore(chain_spec, store_backend)
#store_backend.add(bytes.fromhex(strip_0x(tx_hash)), tx_raw)
store.put(block, tx, [])

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eth_cache/store.py
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# standard imports
import logging
import os
# external imports
from hexdir import HexDir
from chainlib.eth.tx import pack
from hexathon import strip_0x
logg = logging.getLogger(__name__)
class PointerHexDir(HexDir):
def __init__(self, root_path, key_length, levels=2, prefix_length=0):
super(PointerHexDir, self).__init__(root_path, key_length, levels, prefix_length)
self.pointers = {}
def register_pointer(self, label, dir_name=None):
if dir_name == None:
dir_name = label
pointer_dir = os.path.join(self.path, dir_name)
os.makedirs(pointer_dir, exist_ok=True)
label_file = os.path.join(pointer_dir, '.label')
try:
os.stat(label_file)
except FileNotFoundError:
f = open(label_file, 'w')
f.write(label)
f.close()
self.pointers[label] = pointer_dir
def add_pointer(self, pointer, pointer_relpath, destination_path):
if isinstance(pointer_relpath, list):
link_path = os.path.join(self.pointers[pointer], *pointer_relpath)
else:
link_path = os.path.join(self.pointers[pointer], pointer_relpath)
os.makedirs(os.path.dirname(link_path), exist_ok=True)
os.symlink(destination_path, link_path)
logg.debug('added link {} -> {}'.format(link_path, destination_path))
def add(self, key, content, prefix=b'', pointers={}):
(c, entry_path) = super(PointerHexDir, self).add(key, content, prefix=prefix)
for k in pointers.keys():
self.add_pointer(k, pointers[k], entry_path)
class TxFileStore:
def __init__(self, chain_spec, backend):
self.backend = backend
self.chain_spec = chain_spec
def put(self, block, tx, addresses=[], attrs={}):
tx_src = tx.as_dict()
tx_raw = pack(tx_src, self.chain_spec)
if len(addresses) == 0:
self.backend.add(bytes.fromhex(tx.hash), tx_raw, pointers={})
return
for address in addresses:
filename = '{}_{}_{}'.format(block.number, tx.index, strip_0x(tx.hash))
self.backend.add(bytes.fromhex(tx.hash), tx_raw, pointers={'address': [strip_0x(address),filename]})

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eth_cache/store/file.py Normal file
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# standard imports
import os
import json
import logging
# external imports
from hexathon import strip_0x
from chainlib.eth.tx import (
Tx,
pack,
)
from leveldir.numeric import NumDir
from leveldir.hex import HexDir
logg = logging.getLogger(__name__)
default_base_dir = '/var/lib'
def chain_dir_for(chain_spec, base_dir=default_base_dir):
chain_dir = os.path.join(base_dir, str(chain_spec).replace(':', '/'))
return os.path.join(chain_dir, 'eth_cache')
class FileStore:
def put_tx(self, tx, include_data=False):
raw = pack(tx.src(), self.chain_spec)
tx_hash_dirnormal = strip_0x(tx.hash).upper()
tx_hash_bytes = bytes.fromhex(tx_hash_dirnormal)
self.tx_raw_dir.add(tx_hash_bytes, raw)
if self.address_rules != None:
for a in tx.outputs + tx.inputs:
if self.address_rules.apply_rules_addresses(a, a, tx.hash):
a_hex = strip_0x(a).upper()
a = bytes.fromhex(a_hex)
self.address_dir.add_dir(tx_hash_dirnormal, a, b'')
dirpath = self.address_dir.to_filepath(a_hex)
fp = os.path.join(dirpath, '.start')
num = tx.block.number
num_compare = 0
try:
f = open(fp, 'rb')
r = f.read(8)
f.close()
num_compare = int.from_bytes(r, 'big')
except FileNotFoundError:
pass
if num_compare == 0 or num < num_compare:
logg.debug('recoding new start block {} for {}'.format(num, a))
num_bytes = num.to_bytes(8, 'big')
f = open(fp, 'wb')
f.write(num_bytes)
f.close()
if include_data:
src = json.dumps(tx.src()).encode('utf-8')
self.tx_dir.add(bytes.fromhex(strip_0x(tx.hash)), src)
rcpt_src = tx.rcpt_src()
logg.debug('rcpt {}'.format(rcpt_src))
if rcpt_src != None:
rcpt_src = json.dumps(rcpt_src).encode('utf-8')
self.rcpt_dir.add(bytes.fromhex(strip_0x(tx.hash)), rcpt_src)
def put_block(self, block, include_data=False):
hash_bytes = bytes.fromhex(strip_0x(block.hash))
self.block_num_dir.add(block.number, hash_bytes)
num_bytes = block.number.to_bytes(8, 'big')
self.block_hash_dir.add(hash_bytes, num_bytes)
if include_data:
src = json.dumps(block.src()).encode('utf-8')
self.block_src_dir.add(hash_bytes, src)
def get_block_number(self, block_number):
fp = self.block_num_dir.to_filepath(block_number)
f = open(fp, 'rb')
r = f.read()
f.close()
return self.get_block(r.hex())
def get_block(self, block_hash):
fp = self.block_src_dir.to_filepath(block_hash)
f = open(fp, 'rb')
r = f.read()
f.close()
return r
def get_tx(self, tx_hash):
fp = self.tx_dir.to_filepath(tx_hash)
f = open(fp, 'rb')
r = f.read()
f.close()
return r
def get_rcpt(self, tx_hash):
fp = self.rcpt_dir.to_filepath(tx_hash)
f = open(fp, 'rb')
r = f.read()
f.close()
return r
def get_address_tx(self, address):
fp = self.address_dir.to_filepath(address)
tx_hashes = []
for tx_hash in os.listdir(fp):
if tx_hash[0] == '.':
continue
tx_hashes.append(tx_hash)
return tx_hashes
def __init__(self, chain_spec, cache_root=default_base_dir, address_rules=None):
# self.cache_root = os.path.join(
# cache_root,
# 'eth_cache',
# chain_spec.engine(),
# chain_spec.fork(),
# str(chain_spec.chain_id()),
# )
#self.cache_root = os.path.realpath(self.cache_root)
#self.chain_dir = chain_dir_for(chain_spec, self.cache_root)
self.chain_dir = chain_dir_for(chain_spec, cache_root)
self.cache_dir = self.chain_dir
self.block_src_path = os.path.join(self.cache_dir, 'block', 'src')
self.block_src_dir = HexDir(self.block_src_path, 32, levels=2)
self.block_num_path = os.path.join(self.cache_dir, 'block', 'num')
self.block_num_dir = NumDir(self.block_num_path, [100000, 1000])
self.block_hash_path = os.path.join(self.cache_dir, 'block', 'hash')
self.block_hash_dir = HexDir(self.block_hash_path, 32, levels=2)
self.tx_path = os.path.join(self.cache_dir, 'tx', 'src')
self.tx_raw_path = os.path.join(self.cache_dir, 'tx', 'raw')
self.tx_dir = HexDir(self.tx_path, 32, levels=2)
self.tx_raw_dir = HexDir(self.tx_raw_path, 32, levels=2)
self.rcpt_path = os.path.join(self.cache_dir, 'rcpt', 'src')
self.rcpt_raw_path = os.path.join(self.cache_dir, 'rcpt', 'raw')
self.rcpt_dir = HexDir(self.rcpt_path, 32, levels=2)
self.rcpt_raw_dir = HexDir(self.rcpt_raw_path, 32, levels=2)
self.address_path = os.path.join(self.cache_dir, 'address')
self.address_dir = HexDir(self.address_path, 20, levels=2)
self.chain_spec = chain_spec
self.address_rules = address_rules
def __str__(self):
return 'FileStore: root {}'.format(self.cache_root)

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eth_cache/store/null.py Normal file
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# standard imports
import os
import logging
import json
logg = logging.getLogger(__name__)
class NullStore:
def put_tx(self, tx, include_data=False):
pass
def put_block(self, block, include_data=False):
pass
def get_block_number(self, v):
raise FileNotFoundError(v)
def get_block(self, v):
raise FileNotFoundError(v)
def get_tx(self, v):
raise FileNotFoundError(v)
def get_rcpt(self, v):
raise FileNotFoundError(v)
def __init__(self):
self.chain_dir = '/dev/null'
def __str__(self):
return "Nullstore"

155
examples/dump.py
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# standard imports
import tempfile
import os
import logging
import sys
# external imports
from chainlib.chain import ChainSpec
from chainlib.eth.connection import EthHTTPConnection
from chainlib.eth.block import (
block_by_number,
block_by_hash,
block_latest,
Block,
)
from chainlib.eth.tx import (
Tx,
transaction,
receipt,
)
from chainlib.interface import ChainInterface
from chainsyncer.backend.memory import MemBackend
from chainsyncer.driver.threadpool import ThreadPoolHistorySyncer
from chainsyncer.filter import SyncFilter
# local imports
from eth_cache.account import AccountRegistry
from eth_cache.store import TxFileStore
from eth_cache.store import PointerHexDir
logging.basicConfig(level=logging.INFO)
logg = logging.getLogger()
logging.getLogger('eth_cache.store').setLevel(logging.DEBUG)
#logging.getLogger('chainsyncer.filter').setLevel(logging.DEBUG)
logging.getLogger('chainsyncer.driver.threadpool').setLevel(logging.DEBUG)
#logging.getLogger('chainsyncer.driver.head').setLevel(logging.DEBUG)
#logging.getLogger('chainsyncer.backend.memory').setLevel(logging.DEBUG)
root_dir = tempfile.mkdtemp(dir=os.path.join('/tmp/ethsync'))
data_dir = os.path.join(root_dir, 'store')
logg.info('using data dir {}'.format(data_dir))
chain_interface = ChainInterface()
chain_interface.set('block_by_number', block_by_number)
chain_interface.set('block_by_hash', block_by_hash)
chain_interface.set('block_latest', block_latest)
chain_interface.set('block_from_src', Block.from_src)
chain_interface.set('tx_from_src', Tx.from_src)
chain_interface.set('tx_by_hash', transaction)
chain_interface.set('tx_receipt', receipt)
chain_interface.set('src_normalize', Tx.src_normalize)
chain_spec = ChainSpec('evm', 'ethereum', 1)
backend = PointerHexDir(data_dir, 32)
backend.register_pointer('address')
store = TxFileStore(chain_spec, backend)
def conn_factory():
return EthHTTPConnection('http://localhost:8545')
#return EthHTTPConnection('http://localhost:63545')
rpc = conn_factory()
#start = 8534365
start = 12423900
#start = 0
#o = block_latest()
#r = rpc.do(o)
#stop = int(r, 16)
stop = start + 10
syncer_backend = MemBackend(chain_spec, None, target_block=stop)
syncer_backend.set(start, 0)
#o = block_by_number(12423955, include_tx=False)
#r = rpc.do(o)
##o = block_by_hash(r)
##r = rpc.do(o)
#block = Block(r)
#
#tx_hash = block.txs[308]
#logg.debug('tx_ahsh {}'.format(tx_hash))
#o = transaction(tx_hash)
#tx_src = rpc.do(o)
#o = receipt(tx_hash)
#rcpt = rpc.do(o)
#tx = Tx(tx_src, block=block)
account_registry = AccountRegistry()
account_registry.add('0x6bd8cb96bbc58a73d5360301b7791457bc93da24', 'money')
def apply_one_async(fltr, idx, conn, block, tx, session):
logg.error('>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> apply async')
fltr.filter(conn, block, tx, session)
return (block.number, tx.index,)
class ThreadedSyncFilter(SyncFilter):
def __init__(self, pool, backend):
super(ThreadedSyncFilter, self).__init__(backend)
self.pool = pool
def apply_one(self, fltr, idx, conn, block, tx, session):
logg.error('applyone  {} {}'.format(fltr, self.pool))
#self.pool.apply_async(apply_one_async, (fltr, idx, conn, block, tx, session, self.backend.complete_filter,))
self.pool.apply(fltr, (idx, conn, block, tx, session,), {}, self.backend.complete_filter)
logg.debug('applyone end')
class StoreFilter:
def __init__(self, store, registry):
self.registry = registry
self.store = store
def filter(self, conn, block, tx, session=None):
addresses = []
if account_registry.have(tx.inputs[0]):
addresses.append(tx.inputs[0])
if account_registry.have(tx.outputs[0]):
addresses.append(tx.outputs[0])
store.put(block, tx, addresses)
class MonitorFilter:
def __init__(self, name='sync'):
self.name = name
def filter(self, rpc, block, tx, session=None):
logg.error('foozzzzzzzzzz')
logg.debug('foo')
if tx == None:
s = '{} sync block error in tx lookup ({})'.format(self.name, block.number, len(block.txs))
else:
s = '{} sync block {} tx {}/{}'.format(self.name, block.number, tx.index, len(block.txs))
sys.stdout.write('{:<100s}\r'.format(s))
fltr = StoreFilter(store, account_registry)
if __name__ == '__main__':
ThreadPoolHistorySyncer.yield_delay = 0
syncer = ThreadPoolHistorySyncer(conn_factory, 2, syncer_backend, chain_interface)
syncer.add_filter(MonitorFilter())
syncer.add_filter(fltr)
syncer.filter = ThreadedSyncFilter(syncer.worker_pool, syncer_backend)
syncer.loop(0, rpc)

4
requirements.txt Normal file
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hexathon~=0.1.5
jsonrpc-std~=0.1.0
leveldir~=0.3.0
chainlib-eth>=0.1.0b3,<=0.1.0

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run_tests.sh Normal file
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#!/bin/bash
set -a
set -e
set -x
default_pythonpath=$PYTHONPATH:.
export PYTHONPATH=${default_pythonpath:-.}
>&2 echo using pythonpath $PYTHONPATH
for f in `ls tests/*.py`; do
python $f
done
set +x
set +e
set +a

36
setup.cfg Normal file
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[metadata]
name = eth-cache
version = 0.1.0
description = Ethereum chain data caching tools
author = Louis Holbrook
author_email = dev@holbrook.no
url = https://git.defalsify.org/eth-monitor
keywords =
dlt
blockchain
cryptocurrency
ethereum
classifiers =
Programming Language :: Python :: 3
Operating System :: OS Independent
Development Status :: 3 - Alpha
Topic :: Software Development :: Libraries
Environment :: Console
Intended Audience :: Developers
License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
Topic :: Internet
# Topic :: Blockchain :: EVM
license = GPL3
licence_files =
LICENSE
[options]
include_package_data = True
python_requires = >= 3.7
packages =
eth_cache
eth_cache.store
[options.entry_points]
console_scripts =
eth-cache-list = eth_cache.runnable.list:main

28
setup.py Normal file
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from setuptools import setup
import configparser
import os
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(
install_requires=requirements,
tests_require=test_requirements,
)

5
test_requirements.txt Normal file
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eth_tester==0.5.0b3
py-evm==0.3.0a20
rlp==2.0.1
pytest==6.0.1
coverage==5.5

86
tests/test_basic.py Normal file
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# standard imports
import tempfile
import shutil
import unittest
import logging
import json
# external imports
from chainlib.chain import ChainSpec
from chainlib.eth.gas import (
Gas,
OverrideGasOracle,
)
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.unittest.ethtester import EthTesterCase
from chainlib.eth.tx import (
transaction,
receipt,
TxFormat,
Tx,
)
from chainlib.eth.block import (
block_by_hash,
Block,
)
from chainlib.eth.address import is_same_address
from hexathon import strip_0x
# local imports
from eth_cache.store.file import FileStore
logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
class TestCache(EthTesterCase):
def setUp(self):
super(TestCache, self).setUp()
fp = tempfile.mkdtemp()
self.cache_dir = fp
self.store = FileStore(self.chain_spec, cache_root=self.cache_dir)
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
gas_oracle = OverrideGasOracle(price=100000000000, limit=30000)
c = Gas(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
(tx_hash, o) = c.create(self.accounts[0], self.accounts[1], 1024)
r = self.rpc.do(o)
o = transaction(tx_hash)
tx_src = self.rpc.do(o)
o = receipt(tx_hash)
rcpt_src = self.rpc.do(o)
o = block_by_hash(tx_src['block_hash'])
block_src = self.rpc.do(o)
self.block = Block(block_src)
self.tx = Tx(tx_src, block=self.block, rcpt=rcpt_src)
def tearDown(self):
shutil.rmtree(self.cache_dir)
def test_tx(self):
logg.debug('tx {}'.format(self.tx))
self.store.put_tx(self.tx, include_data=True)
j = self.store.get_tx(self.tx.hash)
tx = json.loads(j)
self.assertTrue(is_same_address(tx['hash'], self.tx.hash))
def test_block(self):
logg.debug('tx {}'.format(self.tx))
self.store.put_block(self.block, include_data=True)
block_hash = strip_0x(self.block.hash)
j = self.store.get_block(block_hash)
block = json.loads(j)
retrieved_block_hash = strip_0x(block['hash'])
self.assertEqual(retrieved_block_hash, block_hash)
if __name__ == '__main__':
unittest.main()