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https://github.com/aljazceru/python-teos.git
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95759793ba
bitcoin_cli as a global variable in the main __init__.py was creating issues related to http.client.CannotSendRequest: Request-sent and connection re-usage. Define a new connection per request.
110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
import binascii
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from hashlib import sha256
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from pisa.logger import Logger
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from pisa.tools import bitcoin_cli
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from pisa.utils.auth_proxy import JSONRPCException
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logger = Logger("BlockProcessor")
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class BlockProcessor:
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@staticmethod
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def get_block(block_hash):
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try:
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block = bitcoin_cli().getblock(block_hash)
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except JSONRPCException as e:
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block = None
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logger.error("Couldn't get block from bitcoind.", error=e.error)
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return block
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@staticmethod
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def get_best_block_hash():
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try:
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block_hash = bitcoin_cli().getbestblockhash()
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except JSONRPCException as e:
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block_hash = None
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logger.error("Couldn't get block hash.", error=e.error)
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return block_hash
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@staticmethod
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def get_block_count():
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try:
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block_count = bitcoin_cli().getblockcount()
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except JSONRPCException as e:
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block_count = None
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logger.error("Couldn't get block count", error=e.error)
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return block_count
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# FIXME: The following two functions does not seem to belong here. They come from the Watcher, and need to be
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# separated since they will be reused by the TimeTraveller.
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# DISCUSS: 36-who-should-check-appointment-trigger
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@staticmethod
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def get_potential_matches(txids, locator_uuid_map):
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potential_locators = {sha256(binascii.unhexlify(txid)).hexdigest(): txid for txid in txids}
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# Check is any of the tx_ids in the received block is an actual match
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intersection = set(locator_uuid_map.keys()).intersection(potential_locators.keys())
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potential_matches = {locator: potential_locators[locator] for locator in intersection}
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if len(potential_matches) > 0:
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logger.info("List of potential matches", potential_matches=potential_matches)
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else:
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logger.info("No potential matches found")
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return potential_matches
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@staticmethod
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def get_matches(potential_matches, locator_uuid_map, appointments):
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matches = []
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for locator, dispute_txid in potential_matches.items():
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for uuid in locator_uuid_map[locator]:
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try:
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# ToDo: #20-test-tx-decrypting-edge-cases
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justice_rawtx = appointments[uuid].encrypted_blob.decrypt(dispute_txid)
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justice_txid = bitcoin_cli().decoderawtransaction(justice_rawtx).get('txid')
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logger.info("Match found for locator.", locator=locator, uuid=uuid, justice_txid=justice_txid)
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except JSONRPCException as e:
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# Tx decode failed returns error code -22, maybe we should be more strict here. Leaving it simple
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# for the POC
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justice_txid = None
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justice_rawtx = None
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logger.error("Can't build transaction from decoded data.", error=e.error)
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matches.append((locator, uuid, dispute_txid, justice_txid, justice_rawtx))
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return matches
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# DISCUSS: This method comes from the Responder and seems like it could go back there.
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@staticmethod
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def check_confirmations(txs, unconfirmed_txs, tx_job_map, missed_confirmations):
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for tx in txs:
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if tx in tx_job_map and tx in unconfirmed_txs:
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unconfirmed_txs.remove(tx)
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logger.info("Confirmation received for transaction", tx=tx)
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elif tx in unconfirmed_txs:
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if tx in missed_confirmations:
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missed_confirmations[tx] += 1
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else:
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missed_confirmations[tx] = 1
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logger.info("Transaction missed a confirmation", tx=tx, missed_confirmations=missed_confirmations[tx])
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return unconfirmed_txs, missed_confirmations
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