def update_heart_beat(dbsession: Session, network_id: UUID, block_number: int, block_timestamp: float):
"""Update heartbeat timestamp in the AssetNetwork, so we know this network is alive."""
with dbsession.transaction_manager:
status = CryptoNetworkStatus.get_network_status(dbsession, network_id)
status.data["heartbeat"] = {
"timestamp": time.time(),
"block_number": block_number,
"block_timestamp": block_timestamp,
}
def dump_network_heartbeat(network: AssetNetwork):
"""Check if we have been succesfully communicating with the network recently."""
session = Session.object_session(network)
status = CryptoNetworkStatus.get_network_status(session, network.id)
heartbeat_data = status.data.get("heartbeat")
if not heartbeat_data:
return {}
return {
"name": network.name,
"geth_ping_seconds_ago": time.time() - float(heartbeat_data["timestamp"]),
"last_block_seconds_ago": float(time.time()) - float(heartbeat_data["block_timestamp"]),
"last_block": heartbeat_data["block_number"],
}
def is_network_alive(network: AssetNetwork, timeout=60, block_timeout=180, current_time=None):
"""Check if we have been succesfully communicating with the network recently."""
session = Session.object_session(network)
if not current_time:
current_time = time.time()
status = CryptoNetworkStatus.get_network_status(session, network.id)
heartbeat_data = status.data.get("heartbeat")
if not heartbeat_data:
return False
# Check if we have had a ping from network recently
if int(heartbeat_data["timestamp"]) < current_time - timeout:
return False
# Check if geth itself has been following blocks or fallen out of network
if block_timeout:
if int(heartbeat_data["block_timestamp"]) < current_time - block_timeout:
return False
return True
