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main.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import polling2
import requests
import json
from web3 import Web3
import pandas as pd
from decouple import config
from datetime import datetime
import logging
from collections import defaultdict
import time
from sqlalchemy import create_engine, desc
from sqlalchemy.orm import sessionmaker
from models import EdenBlock, Epoch, Base, Distribution, DistributionBalance
from apscheduler.schedulers.background import BackgroundScheduler
INFURA_ENDPOINT = config('INFURA_ENDPOINT')
PSQL_ENDPOINT = config('PSQL_ENDPOINT')
engine = create_engine(PSQL_ENDPOINT)
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
query_dict = {
'block': 'block.graphql',
'distribution': 'distribution.graphql',
'block_lookup': 'block_lookup.graphql',
'epoch_latest': 'epoch_latest.graphql',
'epoch': 'epoch.graphql'
}
eden_governance_api = 'https://api.thegraph.com/subgraphs/name/eden-network/governance'
eden_distribution_api = 'https://api.thegraph.com/subgraphs/name/eden-network/distribution'
eden_network_api = 'https://api.thegraph.com/subgraphs/name/eden-network/network'
def query_to_dict(rset):
result = defaultdict(list)
for obj in rset:
instance = inspect(obj)
for key, x in instance.attrs.items():
result[key].append(x.value)
return result
def get_web3_provider():
infura_endpoint = INFURA_ENDPOINT
my_provider = Web3.HTTPProvider(infura_endpoint)
w3 = Web3(my_provider)
return w3
def get_latest_eth_block():
eden_db_last_block = get_latest_eden_block_db()
w3 = get_web3_provider()
latest_eth_block = w3.eth.get_block('latest')['number']
if latest_eth_block > eden_db_last_block:
return latest_eth_block
else:
return None
def get_latest_eden_block_db():
eden_db_last_block = session.query(EdenBlock).order_by(desc(EdenBlock.block_number)).limit(1).all()
if eden_db_last_block != []:
eden_db_last_block = eden_db_last_block[0].block_number
else:
eden_db_last_block = 0
return eden_db_last_block
def clean_epoch_entry(epoch_string):
epoch_number = int(epoch_string.split('+')[1].replace('epoch', ''))
return int(epoch_number)
def get_latest_distribution_number():
eden_db_last_number_query = session.query(Distribution).order_by(desc(Distribution.distribution_number)).limit(1).all()
if eden_db_last_number_query != []:
eden_last_number = eden_db_last_number_query[0].distribution_number
return eden_last_number
else:
return 0
def ipfs_link_cleanup(raw_uri):
final_ipfs_link = "https://ipfs.io/ipfs/" + raw_uri.split('//')[1]
return final_ipfs_link
def graph_query_call(api, query, variables=None):
request = requests.post(api, json={'query': query, 'variables': variables})
if request.status_code == 200:
return request.json()
else:
Exception('Query failed. return code is {}. {}'.format(request.status_code, query))
def fetch_query(query):
query_file = query_dict.get(query)
with open(query_file, 'r') as file:
data = file.read()
return data
def get_epoch_number(block_number):
epoch_number_query = session.query(Epoch).filter(block_number >= Epoch.start_block_number, block_number <= Epoch.end_block_number).limit(1).all()
if epoch_number_query != []:
epoch_number = epoch_number_query[0].epoch_number
return epoch_number
else:
latest_epoch = get_latest_epoch()
return latest_epoch
def get_latest_epoch():
query = fetch_query('epoch_latest')
latest_epoch_result = graph_query_call(eden_governance_api, query)
latest_epoch_id = latest_epoch_result['data']['epoches'][0]['id']
latest_epoch_number = clean_epoch_entry(latest_epoch_id)
return latest_epoch_number
def get_block_number_from_id(block_id):
query = fetch_query('block_lookup')
variables = {'block_id': block_id}
block_result = graph_query_call(eden_governance_api, query, variables)
eden_block_number = int(block_result['data']['block']['number'])
return eden_block_number
def eden_block_call():
last_block = 0
last_block_current = get_latest_eth_block()
eden_blocks_df = pd.DataFrame()
while True:
query = fetch_query('block')
variables = {'number_gt': last_block}
block_result = graph_query_call(eden_governance_api, query, variables)
eden_blocks_df_temp = pd.DataFrame.from_dict(block_result['data']['blocks'])
eden_blocks_df = eden_blocks_df.append(eden_blocks_df_temp)
last_block = int(eden_blocks_df.iloc[-1]['number'])
if last_block >= last_block_current:
break
eden_blocks_df = eden_blocks_df.drop_duplicates()
logging.info('Eden Blocks Pulled To DataFrame')
logging.info('Adding Eden Blocks To Database Now')
eden_last_block_db = get_latest_eden_block_db()
eden_blocks_df = eden_blocks_df[pd.to_numeric(eden_blocks_df['number']) >= eden_last_block_db]
for index, row in eden_blocks_df.iterrows():
block_id_query = session.query(EdenBlock).filter(EdenBlock.id==row['id']).limit(1).all() or None
if block_id_query is None:
epoch_number = get_epoch_number(row['number'])
eden_block_entry = EdenBlock(
id = row['id'],
author = row['author'],
difficulty = row['difficulty'],
gas_limit = row['gasLimit'],
gas_used = row['gasUsed'],
block_hash = row['hash'],
block_number = row['number'],
parent_hash = row['parentHash'],
uncle_hash = row['unclesHash'],
size = row['size'],
state_root = row['stateRoot'],
timestamp = datetime.fromtimestamp(int(row['timestamp'])),
total_difficulty = row['totalDifficulty'],
transactions_root = row['transactionsRoot'],
receipts_root = row['receiptsRoot'],
epoch_number = epoch_number
)
session.add(eden_block_entry)
session.commit()
logging.info('Eden Blocks Added To Database Now')
def eden_epoch_call():
eden_epochs_df = pd.DataFrame()
query = fetch_query('epoch')
epoch_result = graph_query_call(eden_governance_api, query)
eden_epochs_df = pd.DataFrame.from_dict(epoch_result['data']['epoches'])
logging.info('Eden Epochs Pulled To DataFrame')
logging.info('Adding Eden Epochs To Database Now')
for index, row in eden_epochs_df.iterrows():
epoch_id_query = session.query(Epoch).filter(Epoch.id==row['id']).limit(1).all() or None
if epoch_id_query is None and row['finalized'] == True:
epoch = clean_epoch_entry(row['id'])
start_block_number = get_block_number_from_id(row['startBlock']['id'])
end_block_number = get_block_number_from_id(row['endBlock']['id'])
epoch_entry = Epoch(
id = row['id'],
finalized = row['finalized'],
epoch_number = epoch,
start_block = row['startBlock']['id'],
start_block_number = start_block_number,
end_block_number = end_block_number,
end_block = row['endBlock']['id'],
producer_blocks = row['producerBlocks'],
all_blocks = row['allBlocks'],
producer_blocks_ratio = row['producerBlocksRatio']
)
session.add(epoch_entry)
session.commit()
logging.info('Epochs Added To Database Now')
def eden_distribution_call():
eden_distribution = pd.DataFrame()
session = DBSession()
distribution_number = get_latest_distribution_number()
if distribution_number is None:
distribution_number = 0
query = fetch_query('distribution')
variables = {'number_gt': distribution_number}
distribution_result = graph_query_call(eden_distribution_api, query, variables)
distribution_df = pd.DataFrame.from_dict(distribution_result['data']['distributions'])
distribution_df['final_metadata_url'] = distribution_df['metadataURI'].apply(lambda row: ipfs_link_cleanup(row) )
logging.info('Eden Distribution Pulled To DataFrame')
logging.info('Adding Eden Distribution To Database Now')
for index, row in distribution_df.iterrows():
distribution_id_query = session.query(Distribution).filter(Distribution.id==row['id']).all() or None
if distribution_id_query is None:
ipfs_json = requests.get(row['final_metadata_url']).json()
distribution_entry = Distribution(
id = row['id'],
distribution_number = row['distributionNumber'],
distributor = str(row['distributor']),
timestamp = datetime.fromtimestamp(int(row['timestamp'])),
merkle_root = row['merkleRoot'],
metadata_url = row['final_metadata_url'],
epoch_number = ipfs_json['epoch']
)
session.add(distribution_entry)
session.commit()
for key, value in ipfs_json['balances'].items():
distribution_balance_entry = DistributionBalance(
miner = key,
balance_index = value['index'],
distribution_number = int(row['distributionNumber']),
amount = int(value['amount'], 16),
epoch_number = ipfs_json['epoch']
)
session.add(distribution_balance_entry)
session.commit()
logging.info('Eden Distribution Added to the Database')
if __name__ == '__main__':
scheduler = BackgroundScheduler()
scheduler.add_job(eden_epoch_call, 'interval', hours=24)
scheduler.add_job(eden_block_call, 'interval', hours=24)
scheduler.add_job(eden_distribution_call, 'interval', hours=24)
scheduler.start()
try:
# This is here to simulate application activity (which keeps the main thread alive).
while True:
time.sleep(2)
except (KeyboardInterrupt, SystemExit):
# Not strictly necessary if daemonic mode is enabled but should be done if possible
scheduler.shutdown()