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tim 2016-06-10 16:23:46 +02:00
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docs/source/servers/python-server-api-examples.md
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@ -2,7 +2,7 @@
This section gives an example of using the Python Server API to interact _directly_ with a BigchainDB node running BigchainDB Server. That is, in this example, the Python code and BigchainDB Server run on the same machine.
(One can also interact with a BigchainDB node via other APIs, including the HTTP Client-Server API.)
(One can also interact with a BigchainDB node via other APIs, including the HTTP Client-Server API.)
We create a digital asset, sign it, write it to a BigchainDB Server instance, read it, transfer it to a different user, and then attempt to transfer it to another user, resulting in a double-spend error.
@ -559,7 +559,7 @@ threshold_condition.add_subfulfillment(cc.Ed25519Fulfillment(public_key=threshol
# Update the condition in the newly created transaction
threshold_tx['transaction']['conditions'][0]['condition'] = {
'details': json.loads(threshold_condition.serialize_json()),
'details': threshold_condition.to_dict(),
'uri': threshold_condition.condition.serialize_uri()
}
@ -667,7 +667,7 @@ tx_retrieved_id = b.get_owned_ids(thresholduser1_pub).pop()
threshold_tx_transfer = b.create_transaction([thresholduser1_pub, thresholduser2_pub, thresholduser3_pub], thresholduser4_pub, tx_retrieved_id, 'TRANSFER')
# Parse the threshold cryptocondition
threshold_fulfillment = cc.Fulfillment.from_json(threshold_tx['transaction']['conditions'][0]['condition']['details'])
threshold_fulfillment = cc.Fulfillment.from_dict(threshold_tx['transaction']['conditions'][0]['condition']['details'])
subfulfillment1 = threshold_fulfillment.get_subcondition_from_vk(thresholduser1_pub)[0]
subfulfillment2 = threshold_fulfillment.get_subcondition_from_vk(thresholduser2_pub)[0]
@ -911,7 +911,7 @@ condition_timeout = cc.TimeoutFulfillment(expire_time=time_expire)
# The conditions list is empty, so we need to append a new condition
tx_timeout['transaction']['conditions'].append({
'condition': {
'details': json.loads(condition_timeout.serialize_json()),
'details': condition_timeout.to_dict(),
'uri': condition_timeout.condition.serialize_uri()
},
'cid': 0,
@ -977,7 +977,7 @@ from time import sleep
tx_timeout_transfer = b.create_transaction(None, testuser1_pub, {'txid': tx_timeout['id'], 'cid': 0}, 'TRANSFER')
# Parse the timeout condition and create the corresponding fulfillment
timeout_fulfillment = cc.Fulfillment.from_json(
timeout_fulfillment = cc.Fulfillment.from_dict(
tx_timeout['transaction']['conditions'][0]['condition']['details'])
tx_timeout_transfer['transaction']['fulfillments'][0]['fulfillment'] = timeout_fulfillment.serialize_uri()
@ -1054,7 +1054,7 @@ tx_retrieved_id = b.get_owned_ids(testuser2_pub).pop()
# Create a base template with the execute and abort address
tx_escrow = b.create_transaction(testuser2_pub, [testuser2_pub, testuser1_pub], tx_retrieved_id, 'TRANSFER')
# Set expiry time - the execute address needs to fulfill before expiration
# Set expiry time - the execute address needs to fulfill before expiration
time_sleep = 12
time_expire = str(float(util.timestamp()) + time_sleep) # 12 secs from now
@ -1073,12 +1073,12 @@ condition_escrow.add_subfulfillment(condition_execute)
# Create the abort branch
condition_abort = cc.ThresholdSha256Fulfillment(threshold=2) # AND gate
condition_abort.add_subfulfillment(cc.Ed25519Fulfillment(public_key=testuser2_pub)) # abort address
condition_abort.add_subfulfillment(condition_timeout_inverted)
condition_abort.add_subfulfillment(condition_timeout_inverted)
condition_escrow.add_subfulfillment(condition_abort)
# Update the condition in the newly created transaction
tx_escrow['transaction']['conditions'][0]['condition'] = {
'details': json.loads(condition_escrow.serialize_json()),
'details': condition_escrow.to_dict(),
'uri': condition_escrow.condition.serialize_uri()
}
@ -1209,7 +1209,7 @@ In the case of `testuser1`, we create the `execute` fulfillment:
tx_escrow_execute = b.create_transaction([testuser2_pub, testuser1_pub], testuser1_pub, {'txid': tx_escrow_signed['id'], 'cid': 0}, 'TRANSFER')
# Parse the Escrow cryptocondition
escrow_fulfillment = cc.Fulfillment.from_json(
escrow_fulfillment = cc.Fulfillment.from_dict(
tx_escrow['transaction']['conditions'][0]['condition']['details'])
subfulfillment_testuser1 = escrow_fulfillment.get_subcondition_from_vk(testuser1_pub)[0]
@ -1250,7 +1250,7 @@ In the case of `testuser2`, we create the `abort` fulfillment:
tx_escrow_abort = b.create_transaction([testuser2_pub, testuser1_pub], testuser2_pub, {'txid': tx_escrow_signed['id'], 'cid': 0}, 'TRANSFER')
# Parse the threshold cryptocondition
escrow_fulfillment = cc.Fulfillment.from_json(
escrow_fulfillment = cc.Fulfillment.from_dict(
tx_escrow['transaction']['conditions'][0]['condition']['details'])
subfulfillment_testuser1 = escrow_fulfillment.get_subcondition_from_vk(testuser1_pub)[0]