#============================================================================ 

#Name        : gscm.py 

#Part of     : Helium 

#Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

#All rights reserved.

#This component and the accompanying materials are made available

#under the terms of the License "Eclipse Public License v1.0"

#which accompanies this distribution, and is available

#at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

#Initial Contributors:

#Nokia Corporation - initial contribution.

#

#Contributors:

#

#Description:

#===============================================================================

""" Wrapper module that get CCM info using GSCM framework. """

import logging

import os

import subprocess

import pkg_resources

import tempfile

# Uncomment this line to enable logging in this module, or configure logging elsewhere

#logging.basicConfig(level=logging.DEBUG)

_logger = logging.getLogger("gscm")

def _execute(command):

    """ Runs a command and returns the result data. """

    process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    output = process.stdout.read()

    process.poll()

    status = process.returncode

    return (output, status)

def __get_gscm_info(method, dbname):

    """ Generic method that call function 'method' on GSCM wrapper script. """

    (f_desc, filename) = tempfile.mkstemp()

    f_file = os.fdopen(f_desc, 'w')

    f_file.close()

    command = "perl " + filename

    command += " %s %s" % (method, dbname)

    _logger.debug("Running command: %s" % command)

    (output, status) = _execute(command)

    _logger.debug("Status: %s" % status)

    _logger.debug("Output: %s" % output)

    if status == 0 or status == None and not ("Can't locate" in output):

        return output.strip()

    if not 'HLM_SUBCON' in os.environ:

        raise Exception("Error retrieving get_db_path info for '%s' database.\nOUTPUT:%s" % (dbname, output.strip()))

    return None

def get_db_path(dbname):

    """ Returns the database path for dbname database. """

    _logger.debug("get_db_path: %s" % dbname)

    return __get_gscm_info('get_db_path', dbname)

def get_router_address(dbname):

    """ Returns the database router address for dbname database. """

    _logger.debug("get_router_address: %s" % dbname)

    return __get_gscm_info('get_router_address', dbname)

def get_engine_host(dbname):

    """ Returns the database engine host for dbname database. """

    _logger.debug("get_engine_host: %s" % dbname)

    return __get_gscm_info('get_engine_host', dbname)