kopia lustrzana https://github.com/bugout-dev/moonstream
244 wiersze
7.2 KiB
Python
244 wiersze
7.2 KiB
Python
import logging
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import json
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from typing import Dict, List, Optional
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from moonstreamdb.blockchain import AvailableBlockchainType, get_label_model
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from moonstreamdb.models import Base
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from moonworm.crawler.function_call_crawler import ContractFunctionCall # type: ignore
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from sqlalchemy.orm import Session
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from sqlalchemy import func, text, select, values, column, Integer, String, exists
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from ..settings import CRAWLER_LABEL
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from .event_crawler import Event
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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def _event_to_label(
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blockchain_type: AvailableBlockchainType, event: Event, label_name=CRAWLER_LABEL
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) -> Base:
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"""
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Creates a label model.
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"""
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label_model = get_label_model(blockchain_type)
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sanityzed_label_data = json.loads(
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json.dumps(
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{
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"type": "event",
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"name": event.event_name,
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"args": event.args,
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}
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).replace(r"\u0000", "")
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)
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label = label_model(
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label=label_name,
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label_data=sanityzed_label_data,
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address=event.address,
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block_number=event.block_number,
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block_timestamp=event.block_timestamp,
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transaction_hash=event.transaction_hash,
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log_index=event.log_index,
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)
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return label
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def _function_call_to_label(
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blockchain_type: AvailableBlockchainType,
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function_call: ContractFunctionCall,
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label_name=CRAWLER_LABEL,
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) -> Base:
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"""
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Creates a label model.
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"""
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label_model = get_label_model(blockchain_type)
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sanityzed_label_data = json.loads(
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json.dumps(
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{
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"type": "tx_call",
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"name": function_call.function_name,
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"caller": function_call.caller_address,
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"args": function_call.function_args,
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"status": function_call.status,
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"gasUsed": function_call.gas_used,
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}
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).replace(r"\u0000", "")
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)
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label = label_model(
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label=label_name,
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label_data=sanityzed_label_data,
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address=function_call.contract_address,
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block_number=function_call.block_number,
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transaction_hash=function_call.transaction_hash,
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block_timestamp=function_call.block_timestamp,
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)
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return label
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def get_last_labeled_block_number(
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db_session: Session,
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blockchain_type: AvailableBlockchainType,
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label_name=CRAWLER_LABEL,
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) -> Optional[int]:
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label_model = get_label_model(blockchain_type)
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block_number = (
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db_session.query(label_model.block_number)
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.filter(label_model.label == label_name)
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.order_by(label_model.block_number.desc())
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.limit(1)
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.one_or_none()
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)
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return block_number[0] if block_number else None
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def get_first_labeled_block_number(
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db_session: Session,
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blockchain_type: AvailableBlockchainType,
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address: str,
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label_name=CRAWLER_LABEL,
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only_events: bool = False,
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) -> Optional[int]:
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label_model = get_label_model(blockchain_type)
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block_number_query = (
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db_session.query(label_model.block_number)
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.filter(label_model.label == label_name)
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.filter(label_model.address == address)
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)
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function_call_block_numbers = (
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block_number_query.filter(label_model.log_index == None)
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.order_by(label_model.block_number)
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.limit(50)
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.all()
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)
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event_block_numbers = (
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block_number_query.filter(label_model.log_index != None)
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.order_by(label_model.block_number)
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.limit(50)
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.all()
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)
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if only_events:
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return event_block_numbers[0][0] if event_block_numbers else None
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else:
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event_block_number = event_block_numbers[0][0] if event_block_numbers else -1
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function_call_block_number = (
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function_call_block_numbers[0][0] if function_call_block_numbers else -1
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)
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max_block_number = max(event_block_number, function_call_block_number)
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return max_block_number if max_block_number != -1 else None
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def commit_session(db_session: Session) -> None:
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"""
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Save labels in the database.
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"""
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try:
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logger.info("Committing session to database")
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db_session.commit()
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except Exception as e:
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logger.error(f"Failed to save labels: {e}")
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db_session.rollback()
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raise e
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def add_events_to_session(
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db_session: Session,
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events: List[Event],
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blockchain_type: AvailableBlockchainType,
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label_name=CRAWLER_LABEL,
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) -> None:
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if len(events) == 0:
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return
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label_model = get_label_model(blockchain_type)
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events_hashes_to_save = set([event.transaction_hash for event in events])
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# Define a CTE VALUES expression to escape big IN clause
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hashes_cte = select(
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values(column("transaction_hash", String), name="hashes").data(
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[(hash,) for hash in events_hashes_to_save]
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)
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).cte()
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# Retrieve existing transaction hashes and registered log indexes
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query = (
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db_session.query(
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label_model.transaction_hash.label("transaction_hash"),
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func.array_agg(label_model.log_index).label("log_indexes"),
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)
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.filter(
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label_model.label == label_name,
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label_model.log_index != None,
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exists().where(
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label_model.transaction_hash == hashes_cte.c.transaction_hash
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),
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)
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.group_by(label_model.transaction_hash)
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)
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existing_log_index_by_tx_hash = {
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row.transaction_hash: row.log_indexes for row in query
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}
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labels_to_save = [
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_event_to_label(blockchain_type, event, label_name)
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for event in events
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if event.transaction_hash not in existing_log_index_by_tx_hash
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or event.log_index not in existing_log_index_by_tx_hash[event.transaction_hash]
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]
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logger.info(f"Saving {len(labels_to_save)} event labels to session")
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db_session.add_all(labels_to_save)
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def add_function_calls_to_session(
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db_session: Session,
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function_calls: List[ContractFunctionCall],
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blockchain_type: AvailableBlockchainType,
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label_name=CRAWLER_LABEL,
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) -> None:
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if len(function_calls) == 0:
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return
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label_model = get_label_model(blockchain_type)
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transactions_hashes_to_save = list(
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set([function_call.transaction_hash for function_call in function_calls])
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)
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# Define a CTE VALUES expression to escape big IN clause
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hashes_cte = select(
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values(column("transaction_hash", String), name="hashes").data(
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[(hash,) for hash in transactions_hashes_to_save]
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)
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).cte()
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# Retrieve existing transaction hashes
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query = db_session.query(
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label_model.transaction_hash.label("transaction_hash")
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).filter(
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label_model.label == label_name,
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label_model.log_index.is_(None),
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exists().where(label_model.transaction_hash == hashes_cte.c.transaction_hash),
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)
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existing_tx_hashes = [row.transaction_hash for row in query]
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labels_to_save = [
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_function_call_to_label(blockchain_type, function_call)
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for function_call in function_calls
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if function_call.transaction_hash not in existing_tx_hashes
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]
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logger.info(f"Saving {len(labels_to_save)} labels to session")
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db_session.add_all(labels_to_save)
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