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Revert "revert get_tx_by_payload_hash"
This reverts commit fb2cd532a9462ae4fc3c50056f01b37467816848.
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fb2cd532a9
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@ -177,24 +177,36 @@ class Bigchain(object):
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def get_tx_by_payload_hash(self, payload_hash):
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"""Retrieves transactions related to a digital asset.
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When creating a transaction one of the optional arguments is the `payload`. The payload is a generic
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dict that contains information about the digital asset.
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To make it easy to query the bigchain for that digital asset we create a sha3-256 hash of the
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serialized payload and store it with the transaction. This makes it easy for developers to keep track
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of their digital assets in bigchain.
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Args:
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payload_hash (str): sha3-256 hash of the serialized payload.
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Returns:
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A list of transactions containing that payload. If no transaction exists with that payload it
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returns an empty list `[]`
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"""
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cursor = r.table('bigchain') \
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.get_all(payload_hash, index='payload_hash') \
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.run(self.conn)
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# First, get information on all blocks which contain this hash
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blocks = self.search_block_election_on_index(payload_hash, 'payload_hash')
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if blocks:
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validity = {block['id']: self.block_election_status(block) for block in blocks}
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transactions = list(cursor)
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return transactions
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# disregard invalid blocks
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validity = {_id: status for _id, status in validity.items() if status != 'invalid'}
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cursor = r.table('bigchain').get_all(*list(validity.keys()))\
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.get_all(payload_hash, index='payload_hash')\
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.run(self.conn)
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return list(cursor)
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else:
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return []
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def get_spent(self, tx_input):
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"""Check if a `txid` was already used as an input.
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