def create_database(conn, dbname):
if r.db_list().contains(dbname).run(conn):
raise exceptions.DatabaseAlreadyExists(
'Database `{}` already exists'.format(dbname))
logger.info('Create database `%s`.', dbname)
r.db_create(dbname).run(conn)
def init():
# Try to access the keypair, throws an exception if it does not exist
b = bigchaindb.Bigchain()
conn = get_conn()
dbname = bigchaindb.config['database']['name']
if r.db_list().contains(dbname).run(conn):
raise exceptions.DatabaseAlreadyExists(
'Database `{}` already exists'.format(dbname))
logger.info('Create:')
logger.info(' - database `%s`', dbname)
r.db_create(dbname).run(conn)
logger.info(' - tables')
# create the tables
r.db(dbname).table_create('bigchain').run(conn)
r.db(dbname).table_create('backlog').run(conn)
logger.info(' - indexes')
# create the secondary indexes
# to order blocks by timestamp
r.db(dbname).table('bigchain').index_create(
'block_timestamp', r.row['block']['timestamp']).run(conn)
# to order blocks by block number
r.db(dbname).table('bigchain').index_create(
'block_number', r.row['block']['block_number']).run(conn)
# to order transactions by timestamp
r.db(dbname).table('backlog').index_create(
'transaction_timestamp', r.row['transaction']['timestamp']).run(conn)
# to query the bigchain for a transaction id
r.db(dbname).table('bigchain').index_create(
'transaction_id', r.row['block']['transactions']['id'],
multi=True).run(conn)
# compound index to read transactions from the backlog per assignee
r.db(dbname).table('backlog')\
.index_create('assignee__transaction_timestamp', [r.row['assignee'], r.row['transaction']['timestamp']])\
.run(conn)
# secondary index for payload hash
r.db(dbname).table('bigchain')\
.index_create('payload_uuid', r.row['block']['transactions']['transaction']['data']['uuid'], multi=True)\
.run(conn)
# wait for rethinkdb to finish creating secondary indexes
r.db(dbname).table('backlog').index_wait().run(conn)
r.db(dbname).table('bigchain').index_wait().run(conn)
logger.info(' - genesis block')
b.create_genesis_block()
logger.info('Done, have fun!')