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return block status

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This commit is contained in:
ryan 2016-08-18 16:04:35 +02:00
parent ebe21e5907
commit bd9979618d
1 changed files with 23 additions and 9 deletions
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32
bigchaindb/core.py
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@ -16,9 +16,14 @@ class Bigchain(object):
Create, read, sign, write transactions to the database Create, read, sign, write transactions to the database
""" """
# return if a block has been voted invalid
BLOCK_INVALID = 'invalid' BLOCK_INVALID = 'invalid'
BLOCK_VALID = 'valid' # return if a block is valid, or tx is in valid block
BLOCK_UNDECIDED = 'undecided' BLOCK_VALID = TX_VALID = 'valid'
# return if block is undecided, or tx is in undecided block
BLOCK_UNDECIDED = TX_UNDECIDED = 'undecided'
# return if transaction is in backlog
TX_IN_BACKLOG = 'backlog'
def __init__(self, host=None, port=None, dbname=None, def __init__(self, host=None, port=None, dbname=None,
public_key=None, private_key=None, keyring=[], public_key=None, private_key=None, keyring=[],
@ -135,15 +140,17 @@ class Bigchain(object):
def get_transaction(self, txid): def get_transaction(self, txid):
"""Retrieve a transaction with `txid` from bigchain. """Retrieve a transaction with `txid` from bigchain.
Queries the bigchain for a transaction that was already included in a block. Queries the bigchain for a transaction, if it's in a valid or invalid
block.
Args: Args:
txid (str): transaction id of the transaction to query txid (str): transaction id of the transaction to query
Returns: Returns:
A dict with the transaction details if the transaction was found. A dict with the transaction details if the transaction was found.
Will add the transaction status to payload ('valid', 'undecided',
If no transaction with that `txid` was found it returns `None` or 'backlog'). If no transaction with that `txid` was found it
returns `None`
""" """
validity = self.get_blocks_status_containing_tx(txid) validity = self.get_blocks_status_containing_tx(txid)
@ -161,17 +168,24 @@ class Bigchain(object):
for _id in validity: for _id in validity:
target_block_id = _id target_block_id = _id
if validity[_id] == Bigchain.BLOCK_VALID: if validity[_id] == Bigchain.BLOCK_VALID:
tx_status = self.TX_VALID
break break
else:
tx_status = self.TX_UNDECIDED
# Query the transaction in the target block and return # Query the transaction in the target block and return
response = r.table('bigchain', read_mode=self.read_mode).get(target_block_id)\ response = r.table('bigchain', read_mode=self.read_mode).get(target_block_id)\
.get_field('block').get_field('transactions')\ .get_field('block').get_field('transactions')\
.filter(lambda tx: tx['id'] == txid).run(self.conn) .filter(lambda tx: tx['id'] == txid).run(self.conn)[0]
response['validity'] = tx_status
return response[0] return response
else: else:
return None # Otherwise, check the backlog
response = r.table('backlog').get(txid).run(self.conn)
if response:
response['validity'] = self.TX_IN_BACKLOG
return response
def search_block_election_on_index(self, value, index): def search_block_election_on_index(self, value, index):
"""Retrieve block election information given a secondary index and value """Retrieve block election information given a secondary index and value