def _execute_phase_1(self, config, current_block_id):
"""
TODO update all EXEC comments/docs
* Each node gathers all transactions that may be included in the prospective block and groups them by transaction owner.
* All transactions owned (or sourced from) a respective node's business unit or system (owned) are grouped for approval.
* All transactions not owned by the node's business unit or system (others) are grouped for validation.
* All owned transactions are verified per business rules, configurable, (e.g, existence or non-existence of particular fields, with field value validation logic).
* All owned and verified transactions are "approved" by executing the Transaction Verification Signing Process defined below.
* Any transactions deemed "unapproved" will be taken out of the prospective block from a node's perspective by non-inclusion in the signing process, and sent to a system "pool" or "queue" for analysis and alternate processing
* All other (non-owned) transactions are validated to system wide rules agreed upon for all nodes through business and system processes.
* All other (non-owned) transactions are declared "valid" by the node by executing the Transaction Verification Signing Process defined below.
* Any transactions deemed "invalid" will be taken out of the prospective block from a node's perspective by non-inclusion in the signing process, and sent to a system "pool" or "queue" for analysis and alternate processing.
"""
print("Phase 1 Verify Start.")
# Group transactions for last 5 seconds into current block id
block_bound_lower_ts = get_block_time(current_block_id -
BLOCK_FIXATE_OFFSET)
print("""Time bounds: %i - %i""" %
(block_bound_lower_ts, block_bound_lower_ts + BLOCK_INTERVAL))
transaction_db.fixate_block(block_bound_lower_ts,
block_bound_lower_ts + BLOCK_INTERVAL,
current_block_id)
if 'approve_block' in config:
return config['approve_block'](config, current_block_id)
transactions = transaction_db.get_all(block_id=current_block_id)
# Validate the schema and structure of the transactions
valid_transactions, invalid_transactions = self.split_items(
valid_transaction_sig, transactions)
# Use the custom approval code if configured, otherwise approve all valid transaction
rejected_transactions = []
if 'approve_transaction' in config:
approved_transactions, rejected_transactions = \
self.split_items(config['approve_transaction'], valid_transactions)
else:
approved_transactions = valid_transactions
if len(approved_transactions) > 0:
# update status of approved transactions
for tx in approved_transactions:
tx["header"]["status"] = "approved"
transaction_db.update_transaction(tx)
# stripping payload from all transactions before signing
self.strip_payload(approved_transactions)
phase = 1
# signatory equals origin_id in phase 1
signatory = origin_id = self.network.this_node.node_id
prior_block_hash = self.get_prior_hash(origin_id, phase)
verification_info = approved_transactions
lower_phase_hash = str(deep_hash(0))
# sign approved transactions
block_info = sign_verification_record(
signatory, prior_block_hash, lower_phase_hash,
self.service_config['public_key'],
self.service_config['private_key'], current_block_id, phase,
origin_id, int(time.time()), verification_info)
# store signed phase specific data
verfication_db.insert_verification(
block_info['verification_record'])
# pass block info to network to send it to appropriate phase
self.network.send_block(self.network.phase_1_broadcast, block_info,
phase)
print("Phase 1 signed " + str(len(approved_transactions)) +
" transactions")
# update status transactions that were rejected
if len(rejected_transactions) > 0:
for tx in rejected_transactions:
tx["header"]["status"] = "rejected"
transaction_db.update_transaction(tx)
def _execute_phase_1(self, config, current_block_id):
"""
TODO update all EXEC comments/docs
* Each node gathers all transactions that may be included in the prospective block and groups them by transaction owner.
* All transactions owned (or sourced from) a respective node's business unit or system (owned) are grouped for approval.
* All transactions not owned by the node's business unit or system (others) are grouped for validation.
* All owned transactions are verified per business rules, configurable, (e.g, existence or non-existence of particular fields, with field value validation logic).
* All owned and verified transactions are "approved" by executing the Transaction Verification Signing Process defined below.
* Any transactions deemed "unapproved" will be taken out of the prospective block from a node's perspective by non-inclusion in the signing process, and sent to a system "pool" or "queue" for analysis and alternate processing
* All other (non-owned) transactions are validated to system wide rules agreed upon for all nodes through business and system processes.
* All other (non-owned) transactions are declared "valid" by the node by executing the Transaction Verification Signing Process defined below.
* Any transactions deemed "invalid" will be taken out of the prospective block from a node's perspective by non-inclusion in the signing process, and sent to a system "pool" or "queue" for analysis and alternate processing.
"""
print("Phase 1 Verify Start.")
# Group transactions for last 5 seconds into current block id
block_bound_lower_ts = get_block_time(current_block_id - BLOCK_FIXATE_OFFSET)
print ("""Time bounds: %i - %i""" % (block_bound_lower_ts, block_bound_lower_ts + BLOCK_INTERVAL))
transaction_db.fixate_block(block_bound_lower_ts, block_bound_lower_ts + BLOCK_INTERVAL, current_block_id)
transactions = transaction_db.get_all(block_id=current_block_id)
# Validate the schema and structure of the transactions
valid_transactions, invalid_transactions = self.split_items(valid_transaction_sig, transactions)
rejected_transactions = []
approved_transactions = []
for txn in valid_transactions:
if self.handle_transaction(txn):
approved_transactions.append(txn)
else:
rejected_transactions.append(txn)
if len(approved_transactions) > 0:
# update status of approved transactions
for tx in approved_transactions:
tx["header"]["status"] = "approved"
transaction_db.update_transaction(tx)
# stripping payload from all transactions before signing
self.strip_payload(approved_transactions)
phase = 1
# signatory equals origin_id in phase 1
signatory = origin_id = self.network.this_node.node_id
prior_block_hash = self.get_prior_hash(origin_id, phase)
verification_info = approved_transactions
lower_hash = str(final_hash([0]))
# sign approved transactions
block_info = sign_verification_record(signatory,
prior_block_hash,
lower_hash,
self.service_config['public_key'],
self.service_config['private_key'],
current_block_id,
phase,
origin_id,
int(time.time()),
self.public_transmission,
verification_info)
# store signed phase specific data
verification_id = str(uuid.uuid4())
verification_db.insert_verification(block_info['verification_record'], verification_id)
# send block info off for public transmission if configured to do so
if block_info['verification_record']['public_transmission']['p1_pub_trans']:
self.network.public_broadcast(block_info, phase)
# send block info for phase 2 validation
self.network.send_block(self.network.phase_1_broadcast, block_info, phase)
print("Phase 1 signed " + str(len(approved_transactions)) + " transactions")
# update status transactions that were rejected
if len(rejected_transactions) > 0:
for tx in rejected_transactions:
tx["header"]["status"] = "rejected"
transaction_db.update_transaction(tx)