def EventEmitter(stub, initHeight):
data_parser = DatatypeParser()
try:
client = BcosClient()
lastHeight = initHeight
while 1:
currHeight = client.getBlockNumber()
if currHeight > lastHeight:
for height in range(lastHeight + 1, currHeight + 1):
result = client.getBlockByNumber(
height, _includeTransactions=False)
for hash in result["transactions"]:
receipt = client.getTransactionReceipt(hash)
logs = data_parser.parse_event_logs(receipt["logs"])
for log in logs:
print(log)
if log["eventname"] == "Task1Finished":
stub.PublishMessage(
gateway_pb2.PublishMessageRequest(
name="task1",
correlationKey="task1",
variables=json.dumps(
{"contract": receipt["to"]})))
elif log["eventname"] == "Task2Finished":
stub.PublishMessage(
gateway_pb2.PublishMessageRequest(
name="task2",
correlationKey=receipt["to"]))
except BcosException as e:
print("execute demo_transaction failed for: {}".format(e))
except BcosError as e:
print("execute demo_transaction failed for: {}".format(e))
print(
"\n>>---------------------------------------------------------------------"
)
try:
res = client.getBlockNumber()
print("getBlockNumber", res)
except BcosError as e:
print("bcos client error,", e.info())
print(
"\n>>---------------------------------------------------------------------"
)
print("getPeers", client.getPeers())
print(
"\n>>---------------------------------------------------------------------"
)
print("getBlockByNumber", client.getBlockByNumber(50))
print(
"\n>>---------------------------------------------------------------------"
)
print("getBlockHashByNumber", client.getBlockHashByNumber(50))
print(
"\n>>---------------------------------------------------------------------"
)
print(
"getBlockByHash",
client.getBlockByHash(
"0xe7588bf4ee5a6fb5aae9bdcc2c4f3c58cf7a789b15a4daa6617ed594b5ba3951"
))
print(
"\n>>---------------------------------------------------------------------"
)
print(
"\n>>---------------------------------------------------------------------"
)
try:
res = client.getBlockNumber()
print("getBlockNumber", json.dumps(res, indent=4))
except BcosError as e:
print("bcos client error,", e.info())
print(
"\n>>---------------------------------------------------------------------"
)
print("getPeers", client.getPeers())
print(
"\n>>---------------------------------------------------------------------"
)
print("getBlockByNumber", json.dumps(client.getBlockByNumber(1)))
print(
"\n>>---------------------------------------------------------------------"
)
blockhash = client.getBlockHashByNumber(1)
print("getBlockHashByNumber", blockhash)
print(
"\n>>---------------------------------------------------------------------"
)
block = client.getBlockByHash(blockhash)
print("getBlockByHash", block)
if isinstance(block, dict) and "transactions" in block.keys():
txhash = block["transactions"][0]["hash"]
print(
"\n>>---------------------------------------------------------------------"
)
