def get_block(self, block_id, include_status=False):
"""Get the block with the specified `block_id` (and optionally its status)
Returns the block corresponding to `block_id` or None if no match is
found.
Args:
block_id (str): transaction id of the transaction to get
include_status (bool): also return the status of the block
the return value is then a tuple: (block, status)
"""
# get block from database
block_dict = backend.query.get_block(self.connection, block_id)
# get the asset ids from the block
if block_dict:
asset_ids = Block.get_asset_ids(block_dict)
# get the assets from the database
assets = self.get_assets(asset_ids)
# add the assets to the block transactions
block_dict = Block.couple_assets(block_dict, assets)
status = None
if include_status:
if block_dict:
status = self.block_election_status(block_dict)
return block_dict, status
else:
return block_dict
def test_couple_assets(self, b):
from bigchaindb.models import Block, Transaction
assets = [
{'msg': '1'},
{'msg': '2'},
{'msg': '3'},
]
txs = []
# create 3 assets
for asset in assets:
tx = Transaction.create([b.me], [([b.me], 1)], asset=asset)
txs.append(tx)
# create a `TRANSFER` transaction.
# the asset in `TRANSFER` transactions is not extracted
tx = Transaction.transfer(txs[0].to_inputs(), [([b.me], 1)],
asset_id=txs[0].id)
txs.append(tx)
# create the block
block = Block(txs)
# decouple assets
assets_from_block, block_dict = block.decouple_assets()
# reconstruct the block
block_dict_reconstructed = Block.couple_assets(block_dict,
assets_from_block)
# check that the reconstructed block is the same as the original block
assert block == Block.from_dict(block_dict_reconstructed)
def get_block(self, block_id, include_status=False):
"""Get the block with the specified `block_id` (and optionally its status)
Returns the block corresponding to `block_id` or None if no match is
found.
Args:
block_id (str): transaction id of the transaction to get
include_status (bool): also return the status of the block
the return value is then a tuple: (block, status)
"""
# get block from database
block_dict = backend.query.get_block(self.connection, block_id)
# get the asset ids from the block
if block_dict:
asset_ids = Block.get_asset_ids(block_dict)
txn_ids = Block.get_txn_ids(block_dict)
# get the assets from the database
assets = self.get_assets(asset_ids)
# get the metadata from the database
metadata = self.get_metadata(txn_ids)
# add the assets to the block transactions
block_dict = Block.couple_assets(block_dict, assets)
# add the metadata to the block transactions
block_dict = Block.couple_metadata(block_dict, metadata)
status = None
if include_status:
if block_dict:
status = self.block_election_status(block_dict)
return block_dict, status
else:
return block_dict
