def get_transaction_by_txid(txid):
if not validate_sha256_hash(txid):
return "Invalid transaction ID", 400
try:
return TransactionSerializer.to_web(db.get_transaction_by_txid(txid))
except KeyError:
return "Transaction with given ID not found", 404
def get_block_by_hash(block_hash):
if not validate_sha256_hash(block_hash):
return "Invalid block hash", 400
try:
return BlockSerializer.to_web(db.get_block_by_hash(block_hash))
except KeyError:
return "Block with given hash doesn't exist", 404
def get_transactions_by_blockhash(blockhash):
if not validate_sha256_hash(blockhash):
return "Invalid block hash", 400
try:
return [
TransactionSerializer.to_web(tr)
for tr in db.get_transactions_by_blockhash(blockhash)
]
except KeyError:
return []
def get_block_confirmations(block_hash):
if not validate_sha256_hash(block_hash):
return "Invalid block hash", 400
try:
block = db.get_block_by_hash(block_hash)
except KeyError:
return "Block with given hash doesn't exist", 404
return {
"hash": block_hash,
"confirmations": db.calculate_block_confirmations(block)
}
def get_transaction_confirmations(txid):
if not validate_sha256_hash(txid):
return "Invalid transaction ID", 400
try:
tr = db.get_transaction_by_txid(txid)
except KeyError:
return "Transaction with given txid not found", 404
block = db.get_block_by_hash(tr['blockhash'])
return {
"txid": txid,
"confirmations": db.calculate_block_confirmations(block)
}