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"""
Blockchain Explorer Data Collectors
Fetches data from Etherscan, BscScan, and TronScan
"""
import asyncio
from datetime import datetime, timezone
from typing import Dict, List, Optional, Any
from utils.api_client import get_client
from utils.logger import setup_logger, log_api_request, log_error
from config import config
logger = setup_logger("explorers_collector")
def calculate_staleness_minutes(data_timestamp: Optional[datetime]) -> Optional[float]:
"""
Calculate staleness in minutes from data timestamp to now
Args:
data_timestamp: Timestamp of the data
Returns:
Staleness in minutes or None if timestamp not available
"""
if not data_timestamp:
return None
now = datetime.now(timezone.utc)
if data_timestamp.tzinfo is None:
data_timestamp = data_timestamp.replace(tzinfo=timezone.utc)
delta = now - data_timestamp
return delta.total_seconds() / 60.0
async def get_etherscan_gas_price() -> Dict[str, Any]:
"""
Get current Ethereum gas price from Etherscan
Returns:
Dict with provider, category, data, timestamp, staleness, success, error
"""
provider = "Etherscan"
category = "blockchain_explorers"
endpoint = "/api?module=gastracker&action=gasoracle"
logger.info(f"Fetching gas price from {provider}")
try:
client = get_client()
provider_config = config.get_provider(provider)
if not provider_config:
error_msg = f"Provider {provider} not configured"
log_error(logger, provider, "config_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg
}
# Check if API key is available
if provider_config.requires_key and not provider_config.api_key:
error_msg = f"API key required but not configured for {provider}"
log_error(logger, provider, "auth_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "missing_api_key"
}
# Build request URL
url = provider_config.endpoint_url
params = {
"module": "gastracker",
"action": "gasoracle",
"apikey": provider_config.api_key
}
# Make request
response = await client.get(url, params=params, timeout=provider_config.timeout_ms // 1000)
# Log request
log_api_request(
logger,
provider,
endpoint,
response.get("response_time_ms", 0),
"success" if response["success"] else "error",
response.get("status_code")
)
if not response["success"]:
error_msg = response.get("error_message", "Unknown error")
log_error(logger, provider, response.get("error_type", "unknown"), error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": response.get("error_type")
}
# Extract data
data = response["data"]
# Etherscan returns real-time data, so staleness is minimal
data_timestamp = datetime.now(timezone.utc)
staleness = 0.0
# Check API response status
if isinstance(data, dict):
api_status = data.get("status")
if api_status == "0":
error_msg = data.get("message", "API returned error status")
log_error(logger, provider, "api_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "api_error"
}
logger.info(f"{provider} - {endpoint} - Gas price retrieved, staleness: {staleness:.2f}m")
return {
"provider": provider,
"category": category,
"data": data,
"timestamp": datetime.now(timezone.utc).isoformat(),
"data_timestamp": data_timestamp.isoformat(),
"staleness_minutes": staleness,
"success": True,
"error": None,
"response_time_ms": response.get("response_time_ms", 0)
}
except Exception as e:
error_msg = f"Unexpected error: {str(e)}"
log_error(logger, provider, "exception", error_msg, endpoint, exc_info=True)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "exception"
}
async def get_bscscan_bnb_price() -> Dict[str, Any]:
"""
Get BNB price from BscScan
Returns:
Dict with provider, category, data, timestamp, staleness, success, error
"""
provider = "BscScan"
category = "blockchain_explorers"
endpoint = "/api?module=stats&action=bnbprice"
logger.info(f"Fetching BNB price from {provider}")
try:
client = get_client()
provider_config = config.get_provider(provider)
if not provider_config:
error_msg = f"Provider {provider} not configured"
log_error(logger, provider, "config_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg
}
# Check if API key is available
if provider_config.requires_key and not provider_config.api_key:
error_msg = f"API key required but not configured for {provider}"
log_error(logger, provider, "auth_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "missing_api_key"
}
# Build request URL
url = provider_config.endpoint_url
params = {
"module": "stats",
"action": "bnbprice",
"apikey": provider_config.api_key
}
# Make request
response = await client.get(url, params=params, timeout=provider_config.timeout_ms // 1000)
# Log request
log_api_request(
logger,
provider,
endpoint,
response.get("response_time_ms", 0),
"success" if response["success"] else "error",
response.get("status_code")
)
if not response["success"]:
error_msg = response.get("error_message", "Unknown error")
log_error(logger, provider, response.get("error_type", "unknown"), error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": response.get("error_type")
}
# Extract data
data = response["data"]
# BscScan returns real-time data
data_timestamp = datetime.now(timezone.utc)
staleness = 0.0
# Check API response status
if isinstance(data, dict):
api_status = data.get("status")
if api_status == "0":
error_msg = data.get("message", "API returned error status")
log_error(logger, provider, "api_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "api_error"
}
# Extract timestamp if available
if "result" in data and isinstance(data["result"], dict):
if "ethusd_timestamp" in data["result"]:
try:
data_timestamp = datetime.fromtimestamp(
int(data["result"]["ethusd_timestamp"]),
tz=timezone.utc
)
staleness = calculate_staleness_minutes(data_timestamp)
except:
pass
logger.info(f"{provider} - {endpoint} - BNB price retrieved, staleness: {staleness:.2f}m")
return {
"provider": provider,
"category": category,
"data": data,
"timestamp": datetime.now(timezone.utc).isoformat(),
"data_timestamp": data_timestamp.isoformat(),
"staleness_minutes": staleness,
"success": True,
"error": None,
"response_time_ms": response.get("response_time_ms", 0)
}
except Exception as e:
error_msg = f"Unexpected error: {str(e)}"
log_error(logger, provider, "exception", error_msg, endpoint, exc_info=True)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "exception"
}
async def get_tronscan_stats() -> Dict[str, Any]:
"""
Get TRX network statistics from TronScan
Returns:
Dict with provider, category, data, timestamp, staleness, success, error
"""
provider = "TronScan"
category = "blockchain_explorers"
endpoint = "/system/status"
logger.info(f"Fetching network stats from {provider}")
try:
client = get_client()
provider_config = config.get_provider(provider)
if not provider_config:
error_msg = f"Provider {provider} not configured"
log_error(logger, provider, "config_error", error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg
}
# Build request URL
url = f"{provider_config.endpoint_url}{endpoint}"
headers = {}
# Add API key if available
if provider_config.requires_key and provider_config.api_key:
headers["TRON-PRO-API-KEY"] = provider_config.api_key
# Make request
response = await client.get(
url,
headers=headers if headers else None,
timeout=provider_config.timeout_ms // 1000
)
# Log request
log_api_request(
logger,
provider,
endpoint,
response.get("response_time_ms", 0),
"success" if response["success"] else "error",
response.get("status_code")
)
if not response["success"]:
error_msg = response.get("error_message", "Unknown error")
log_error(logger, provider, response.get("error_type", "unknown"), error_msg, endpoint)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": response.get("error_type")
}
# Extract data
data = response["data"]
# TronScan returns real-time data
data_timestamp = datetime.now(timezone.utc)
staleness = 0.0
# Parse timestamp if available in response
if isinstance(data, dict):
# TronScan may include timestamp in various fields
if "timestamp" in data:
try:
data_timestamp = datetime.fromtimestamp(
int(data["timestamp"]) / 1000, # TronScan uses milliseconds
tz=timezone.utc
)
staleness = calculate_staleness_minutes(data_timestamp)
except:
pass
logger.info(f"{provider} - {endpoint} - Network stats retrieved, staleness: {staleness:.2f}m")
return {
"provider": provider,
"category": category,
"data": data,
"timestamp": datetime.now(timezone.utc).isoformat(),
"data_timestamp": data_timestamp.isoformat(),
"staleness_minutes": staleness,
"success": True,
"error": None,
"response_time_ms": response.get("response_time_ms", 0)
}
except Exception as e:
error_msg = f"Unexpected error: {str(e)}"
log_error(logger, provider, "exception", error_msg, endpoint, exc_info=True)
return {
"provider": provider,
"category": category,
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": error_msg,
"error_type": "exception"
}
async def collect_explorer_data() -> List[Dict[str, Any]]:
"""
Main function to collect blockchain explorer data from all sources
Returns:
List of results from all explorer data collectors
"""
logger.info("Starting blockchain explorer data collection from all sources")
# Run all collectors concurrently
results = await asyncio.gather(
get_etherscan_gas_price(),
get_bscscan_bnb_price(),
get_tronscan_stats(),
return_exceptions=True
)
# Process results
processed_results = []
for result in results:
if isinstance(result, Exception):
logger.error(f"Collector failed with exception: {str(result)}")
processed_results.append({
"provider": "Unknown",
"category": "blockchain_explorers",
"data": None,
"timestamp": datetime.now(timezone.utc).isoformat(),
"staleness_minutes": None,
"success": False,
"error": str(result),
"error_type": "exception"
})
else:
processed_results.append(result)
# Log summary
successful = sum(1 for r in processed_results if r.get("success", False))
logger.info(f"Explorer data collection complete: {successful}/{len(processed_results)} successful")
return processed_results
class ExplorerDataCollector:
"""
Explorer Data Collector class for WebSocket streaming interface
Wraps the standalone explorer data collection functions
"""
def __init__(self, config: Any = None):
"""
Initialize the explorer data collector
Args:
config: Configuration object (optional, for compatibility)
"""
self.config = config
self.logger = logger
async def collect(self) -> Dict[str, Any]:
"""
Collect blockchain explorer data from all sources
Returns:
Dict with aggregated explorer data
"""
results = await collect_explorer_data()
# Aggregate data for WebSocket streaming
aggregated = {
"latest_block": None,
"network_hashrate": None,
"difficulty": None,
"mempool_size": None,
"transactions_count": None,
"gas_prices": {},
"sources": [],
"timestamp": datetime.now(timezone.utc).isoformat()
}
for result in results:
if result.get("success") and result.get("data"):
provider = result.get("provider", "unknown")
aggregated["sources"].append(provider)
data = result["data"]
# Parse gas price data
if "result" in data and isinstance(data["result"], dict):
gas_data = data["result"]
if provider == "Etherscan":
aggregated["gas_prices"]["ethereum"] = {
"safe": gas_data.get("SafeGasPrice"),
"propose": gas_data.get("ProposeGasPrice"),
"fast": gas_data.get("FastGasPrice")
}
elif provider == "BscScan":
aggregated["gas_prices"]["bsc"] = gas_data.get("result")
# Parse network stats
if provider == "TronScan" and "data" in data:
stats = data["data"]
aggregated["latest_block"] = stats.get("latestBlock")
aggregated["transactions_count"] = stats.get("totalTransaction")
return aggregated
# Example usage
if __name__ == "__main__":
async def main():
results = await collect_explorer_data()
print("\n=== Blockchain Explorer Data Collection Results ===")
for result in results:
print(f"\nProvider: {result['provider']}")
print(f"Success: {result['success']}")
print(f"Staleness: {result.get('staleness_minutes', 'N/A')} minutes")
if result['success']:
print(f"Response Time: {result.get('response_time_ms', 0):.2f}ms")
else:
print(f"Error: {result.get('error', 'Unknown')}")
asyncio.run(main())
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