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Include hashes of previous pdus when referencing them

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This commit is contained in:
Mark Haines 2014-10-16 23:25:12 +01:00
parent 66104da10c
commit bb04447c44
11 changed files with 95 additions and 31 deletions
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31
synapse/storage/signatures.py
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@ -88,3 +88,34 @@ class SignatureStore(SQLBaseStore):
"signature": buffer(signature_bytes),
})
def _get_prev_pdu_hashes_txn(self, txn, pdu_id, origin):
"""Get all the hashes for previous PDUs of a PDU
Args:
txn (cursor):
pdu_id (str): Id of the PDU.
origin (str): Origin of the PDU.
Returns:
dict of (pdu_id, origin) -> dict of algorithm -> hash_bytes.
"""
query = (
"SELECT prev_pdu_id, prev_origin, algorithm, hash"
" FROM pdu_edge_hashes"
" WHERE pdu_id = ? and origin = ?"
)
txn.execute(query, (pdu_id, origin))
results = {}
for prev_pdu_id, prev_origin, algorithm, hash_bytes in txn.fetchall():
hashes = results.setdefault((prev_pdu_id, prev_origin), {})
hashes[algorithm] = hash_bytes
return results
def _store_prev_pdu_hash_txn(self, txn, pdu_id, origin, prev_pdu_id,
prev_origin, algorithm, hash_bytes):
self._simple_insert_txn(txn, "pdu_edge_hashes", {
"pdu_id": pdu_id,
"origin": origin,
"prev_pdu_id": prev_pdu_id,
"prev_origin": prev_origin,
"algorithm": algorithm,
"hash": buffer(hash_bytes),
})