crowetic/mev-inspect-py
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geth additions

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This commit is contained in:
Supragya Raj 2021-10-25 05:56:23 +02:00
parent f523935a79
commit 75ac0ea618
5 changed files with 185 additions and 18 deletions
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13
cli.py
View File

@ -4,6 +4,7 @@ import sys
import click
from web3 import Web3
from web3.middleware import geth_poa_middleware
from mev_inspect.classifiers.trace import TraceClassifier
from mev_inspect.db import get_inspect_session, get_trace_session
@ -26,12 +27,15 @@ def cli():
@click.argument("block_number", type=int)
@click.option("--rpc", default=lambda: os.environ.get(RPC_URL_ENV, ""))
@click.option("--cache/--no-cache", default=True)
def inspect_block_command(block_number: int, rpc: str, cache: bool):
@click.option("--geth/--no-geth", default=False)
def inspect_block_command(block_number: int, rpc: str, cache: bool, geth: bool):
inspect_db_session = get_inspect_session()
trace_db_session = get_trace_session()
base_provider = get_base_provider(rpc)
w3 = Web3(base_provider)
if geth:
w3.middleware_onion.inject(geth_poa_middleware, layer=0)
trace_classifier = TraceClassifier()
if not cache:
@ -41,6 +45,7 @@ def inspect_block_command(block_number: int, rpc: str, cache: bool):
inspect_db_session,
base_provider,
w3,
geth,
trace_classifier,
block_number,
trace_db_session=trace_db_session,
@ -52,8 +57,9 @@ def inspect_block_command(block_number: int, rpc: str, cache: bool):
@click.argument("before_block", type=int)
@click.option("--rpc", default=lambda: os.environ.get(RPC_URL_ENV, ""))
@click.option("--cache/--no-cache", default=True)
@click.option("--geth/--no-geth", default=False)
def inspect_many_blocks_command(
after_block: int, before_block: int, rpc: str, cache: bool
after_block: int, before_block: int, rpc: str, cache: bool, geth: bool
):
inspect_db_session = get_inspect_session()
@ -61,6 +67,8 @@ def inspect_many_blocks_command(
base_provider = get_base_provider(rpc)
w3 = Web3(base_provider)
if geth:
w3.middleware_onion.inject(geth_poa_middleware, layer=0)
trace_classifier = TraceClassifier()
if not cache:
@ -79,6 +87,7 @@ def inspect_many_blocks_command(
inspect_db_session,
base_provider,
w3,
geth,
trace_classifier,
block_number,
trace_db_session=trace_db_session,

144
mev_inspect/block.py
View File

@ -1,5 +1,8 @@
from pathlib import Path
from typing import List, Optional
import asyncio
import aiohttp
import json
from sqlalchemy import orm
from web3 import Web3
@ -19,6 +22,7 @@ def get_latest_block_number(w3: Web3) -> int:
def create_from_block_number(
base_provider,
w3: Web3,
geth: bool,
block_number: int,
trace_db_session: Optional[orm.Session],
) -> Block:
@ -28,7 +32,7 @@ def create_from_block_number(
block = _find_block(trace_db_session, block_number)
if block is None:
return _fetch_block(w3, base_provider, block_number)
return _fetch_block(w3, base_provider, geth, block_number)
else:
return block
@ -36,9 +40,12 @@ def create_from_block_number(
def _fetch_block(
w3,
base_provider,
geth,
block_number: int,
) -> Block:
block_json = w3.eth.get_block(block_number)
if not geth:
receipts_json = base_provider.make_request("eth_getBlockReceipts", [block_number])
traces_json = w3.parity.trace_block(block_number)
@ -47,6 +54,11 @@ def _fetch_block(
]
traces = [Trace(**trace_json) for trace_json in traces_json]
base_fee_per_gas = fetch_base_fee_per_gas(w3, block_number)
else:
traces = geth_get_tx_traces_parity_format(base_provider, block_json)
geth_tx_receipts = geth_get_tx_receipts(base_provider, block_json["transactions"])
receipts = geth_receipts_translator(block_json, geth_tx_receipts)
base_fee_per_gas = 0
return Block(
block_number=block_number,
@ -56,7 +68,6 @@ def _fetch_block(
receipts=receipts,
)
def _find_block(
trace_db_session: orm.Session,
block_number: int,
@ -164,3 +175,132 @@ def cache_block(cache_path: Path, block: Block):
def _get_cache_path(block_number: int) -> Path:
cache_directory_path = Path(cache_directory)
return cache_directory_path / f"{block_number}.json"
# Geth specific additions
def geth_get_tx_traces_parity_format(base_provider, block_json):
block_hash = block_json['hash']
block_trace = geth_get_tx_traces(base_provider, block_hash)
parity_traces = []
for idx, trace in enumerate(block_trace['result']):
if 'result' in trace:
parity_traces.extend(unwrap_tx_trace_for_parity(block_json, idx, trace['result']))
return parity_traces
def geth_get_tx_traces(base_provider, block_hash):
block_trace = base_provider.make_request("debug_traceBlockByHash", [block_hash.hex(), {"tracer": "callTracer"}])
return block_trace
def unwrap_tx_trace_for_parity(
block_json, tx_pos_in_block, tx_trace, position=[]
) -> List[Trace]:
response_list = []
_calltype_mapping = {
"CALL": "call",
"DELEGATECALL": "delegateCall",
"CREATE": "create",
"SUICIDE": "suicide",
"REWARD": "reward",
}
try:
if tx_trace["type"] == "STATICCALL":
return []
action_dict = dict()
action_dict["callType"] = _calltype_mapping[tx_trace["type"]]
if action_dict["callType"] == "call":
action_dict["value"] = tx_trace["value"]
for key in ["from", "to", "gas", "input"]:
action_dict[key] = tx_trace[key]
result_dict = dict()
for key in ["gasUsed", "output"]:
result_dict[key] = tx_trace[key]
response_list.append(
Trace(
action=action_dict,
block_hash = str(block_json['hash']),
block_number=int(block_json["number"]),
result=result_dict,
subtraces=len(tx_trace["calls"]) if "calls" in tx_trace.keys() else 0,
trace_address=position,
transaction_hash=block_json["transactions"][tx_pos_in_block].hex(),
transaction_position=tx_pos_in_block,
type=TraceType(_calltype_mapping[tx_trace["type"]]),
)
)
except Exception:
return []
if "calls" in tx_trace.keys():
for idx, subcall in enumerate(tx_trace["calls"]):
response_list.extend(
unwrap_tx_trace_for_parity(
block_json, tx_pos_in_block, subcall, position + [idx]
)
)
return response_list
async def geth_get_tx_receipts_task(session, endpoint_uri, tx):
data = {
"jsonrpc": "2.0",
"id": "0",
"method": "eth_getTransactionReceipt",
"params": [tx.hex()],
}
async with session.post(endpoint_uri, json=data) as response:
if response.status != 200:
response.raise_for_status()
return await response.text()
async def geth_get_tx_receipts_async(endpoint_uri, transactions):
geth_tx_receipts = []
async with aiohttp.ClientSession() as session:
tasks = [
asyncio.create_task(geth_get_tx_receipts_task(session, endpoint_uri, tx))
for tx in transactions
]
geth_tx_receipts = await asyncio.gather(*tasks)
return [json.loads(tx_receipts) for tx_receipts in geth_tx_receipts]
def geth_get_tx_receipts(base_provider, transactions):
return asyncio.run(geth_get_tx_receipts_async(base_provider.endpoint_uri, transactions))
def geth_receipts_translator(block_json, geth_tx_receipts) -> List[Receipt]:
json_decoded_receipts = [
tx_receipt["result"]
if tx_receipt != None and ("result" in tx_receipt.keys())
else None
for tx_receipt in geth_tx_receipts
]
results = []
for idx, tx_receipt in enumerate(json_decoded_receipts):
if tx_receipt != None:
results.append(unwrap_tx_receipt_for_parity(block_json, idx, tx_receipt))
return results
def unwrap_tx_receipt_for_parity(block_json, tx_pos_in_block, tx_receipt) -> Receipt:
try:
if tx_pos_in_block != int(tx_receipt["transactionIndex"], 16):
print(
"Alert the position of transaction in block is mismatched ",
tx_pos_in_block,
tx_receipt["transactionIndex"],
)
return Receipt(
block_number=block_json["number"],
transaction_hash=tx_receipt["transactionHash"],
transaction_index=tx_pos_in_block,
gas_used=tx_receipt["gasUsed"],
effective_gas_price=tx_receipt["effectiveGasPrice"],
cumulative_gas_used=tx_receipt["cumulativeGasUsed"],
to=tx_receipt["to"],
)
except Exception as e:
print("error while decoding receipt", tx_receipt, e)
return Receipt()

2
mev_inspect/inspect_block.py
View File

@ -39,6 +39,7 @@ def inspect_block(
inspect_db_session: orm.Session,
base_provider,
w3: Web3,
geth: bool,
trace_clasifier: TraceClassifier,
block_number: int,
trace_db_session: Optional[orm.Session],
@ -47,6 +48,7 @@ def inspect_block(
block = create_from_block_number(
base_provider,
w3,
geth,
block_number,
trace_db_session,
)

16
poetry.lock generated
View File

@ -51,6 +51,14 @@ category = "main"
optional = false
python-versions = ">=3.5.3"
[[package]]
name = "asyncio"
version = "3.4.3"
description = "reference implementation of PEP 3156"
category = "main"
optional = false
python-versions = "*"
[[package]]
name = "atomicwrites"
version = "1.4.0"
@ -1017,7 +1025,7 @@ multidict = ">=4.0"
[metadata]
lock-version = "1.1"
python-versions = "^3.9"
content-hash = "baade6f62f3adaff192b2c85b4f602f4990b9b99d6fcce904aeb5087b6fa1921"
content-hash = "c9435e8660dcaddeb63b19f26dddb70287b0f3b4e43ca4ad6168d5f919f0089d"
[metadata.files]
aiohttp = [
@ -1071,6 +1079,12 @@ async-timeout = [
{file = "async-timeout-3.0.1.tar.gz", hash = "sha256:0c3c816a028d47f659d6ff5c745cb2acf1f966da1fe5c19c77a70282b25f4c5f"},
{file = "async_timeout-3.0.1-py3-none-any.whl", hash = "sha256:4291ca197d287d274d0b6cb5d6f8f8f82d434ed288f962539ff18cc9012f9ea3"},
]
asyncio = [
{file = "asyncio-3.4.3-cp33-none-win32.whl", hash = "sha256:b62c9157d36187eca799c378e572c969f0da87cd5fc42ca372d92cdb06e7e1de"},
{file = "asyncio-3.4.3-cp33-none-win_amd64.whl", hash = "sha256:c46a87b48213d7464f22d9a497b9eef8c1928b68320a2fa94240f969f6fec08c"},
{file = "asyncio-3.4.3-py3-none-any.whl", hash = "sha256:c4d18b22701821de07bd6aea8b53d21449ec0ec5680645e5317062ea21817d2d"},
{file = "asyncio-3.4.3.tar.gz", hash = "sha256:83360ff8bc97980e4ff25c964c7bd3923d333d177aa4f7fb736b019f26c7cb41"},
]
atomicwrites = [
{file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
{file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},

2
pyproject.toml
View File

@ -11,6 +11,8 @@ pydantic = "^1.8.2"
hexbytes = "^0.2.1"
click = "^8.0.1"
psycopg2 = "^2.9.1"
aiohttp = "^3.7.4"
asyncio = "^3.4.3"
[tool.poetry.dev-dependencies]
pre-commit = "^2.13.0"