mirror of
https://github.com/fluencelabs/tendermint-demo
synced 2025-03-15 07:40:50 +00:00
97 lines
3.8 KiB
Python
Executable File
97 lines
3.8 KiB
Python
Executable File
#!/usr/bin/python2.7
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import sys, urllib, json, datetime, time, hashlib, sha3
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from common_parse_utils import read_json, get_sync_info, get_max_height
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CMD_PUT_TX = "put"
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CMD_GET_QUERY = "get"
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CMD_LS_QUERY = "ls"
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ALL_COMMANDS = {CMD_PUT_TX, CMD_GET_QUERY, CMD_LS_QUERY}
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def verify_merkle_proof(result, proof, app_hash):
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parts = proof.split(", ")
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parts_len = len(parts)
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for index in range(parts_len, -1, -1):
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low_string = parts[index] if index < parts_len else result
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low_hash = hashlib.sha3_256(low_string).hexdigest()
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high_hashes = parts[index - 1].split(" ") if index > 0 else [app_hash.lower()]
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if not any(low_hash in s for s in high_hashes):
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return False
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return True
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def checked_abci_query(tmaddress, height, command, query, tentative_info):
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if get_max_height(tmaddress) < height + 1:
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return (height, None, None, None, False, "Cannot verify tentative '%s'! Height is not verifiable" % (info or ""))
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app_hash = read_json('%s/block?height=%d' % (tmaddress, height + 1))["result"]["block"]["header"]["app_hash"]
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response = read_json('%s/abci_query?height=%d&data="%s:%s"' % (tmaddress, height, command, query))["result"]["response"]
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(result, proof) = (
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response["value"].decode('base64') if "value" in response else None,
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response["proof"].decode('base64') if "proof" in response else None
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)
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if result is None:
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return (height, result, proof, app_hash, False, "Result is empty")
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elif tentative_info is not None and result != tentative_info:
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return (height, result, proof, app_hash, False, "Verified result '%s' doesn't match tentative '%s'!" % (result, info))
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elif proof is None:
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return (height, result, proof, app_hash, False, "No proof")
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elif not verify_merkle_proof(result, proof, app_hash) :
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return (height, result, proof, app_hash, False, "Proof is invalid")
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else:
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return (height, result, proof, app_hash, True, "")
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def print_response(attribute, value, always=False):
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need_print = always or "v" in flags
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if need_print:
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print attribute + ":", (8 - len(attribute)) * " ", value
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def print_checked_abci_query(tmaddress, height, command, query, tentative_info):
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(height, result, proof, app_hash, success, message) = checked_abci_query(tmaddress, height, command, query, tentative_info)
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app_hash_to_show = "0x" + app_hash[0:6] if app_hash != "" else "--------"
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print_response("height", height)
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print_response("app_hash", app_hash_to_show or "NOT_READY")
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# print_response("proof", (proof or "NO_PROOF").upper())
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print result or "???"
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if not success:
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print_response("bad", message, True)
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def latest_provable_height(tmaddress):
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return get_sync_info(tmaddress)["latest_block_height"] - 1
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def wait_for_height(tmaddress, height, seconds_to_wait = 5):
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wait_step = 0.1
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for w in range(0, int(seconds_to_wait / wait_step)):
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if get_max_height(tmaddress) >= height:
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break
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time.sleep(wait_step)
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num_args = len(sys.argv)
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if num_args < 4 or not sys.argv[2] in ALL_COMMANDS:
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print "usage: python query.py host:port <command> [flags] arg"
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print "<command> is one of:", ", ".join(ALL_COMMANDS)
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sys.exit()
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tmaddress = sys.argv[1]
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command = sys.argv[2]
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flags = "".join(sys.argv[3:(num_args - 1)])
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arg = sys.argv[num_args - 1]
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if command in {CMD_PUT_TX}:
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tx = arg
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query_key = tx.split("=")[0]
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response = read_json(tmaddress + '/broadcast_tx_commit?tx="' + tx + '"')
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if "error" in response:
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print_response("error", response["error"]["data"], True)
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else:
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height = response["result"]["height"]
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if response["result"].get("deliver_tx", {}).get("code", "0") != "0":
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print_response("height", height)
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print_response("bad", log or "NO_MESSAGE", True)
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else:
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info = response["result"].get("deliver_tx", {}).get("info")
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print_response("height", height)
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# print_response("info", info or "EMPTY") TODO: what is info?
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elif command in {CMD_GET_QUERY, CMD_LS_QUERY}:
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height = latest_provable_height(tmaddress)
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print_checked_abci_query(tmaddress, height, command, arg, None)
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