#

# See LICENCE for detail

# Copyright (c) 2014 IRI

#

import psycopg2.extras

from twisted.python import log

from txpostgres.txpostgres import Connection, ConnectionPool

PIANOROLL_CHANNEL = 'PIANOROLL'

ANNOTATION_CHANNEL = 'ANNOT'

class DictConnection(Connection):

    @staticmethod

    def connectionFactory(*args, **kwargs):

        kwargs['connection_factory'] = psycopg2.extras.DictConnection

        return psycopg2.connect(*args, **kwargs)

class DictConnectionPool(ConnectionPool):

    connectionFactory = DictConnection

def create_connection_pool(conn_string):

    created_connection_pool = DictConnectionPool(None, conn_string)

    d = created_connection_pool.start()

    d.addErrback(log.err)

    return created_connection_pool, d