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#!/usr/bin/env python

import re
import ConfigParser
import ATFUtils

########################################################################
## GlobalParameter file ConfigParser Object 
########################################################################
Config = ConfigParser.ConfigParser()

def initialize():
    """
    Description:
        Initialize ATFUtils.Logger, TestEnvironments

    Parameters:
        None

    Returns:
        Success: 0
        Failure: 1
    """

    if ATFUtils.LogObj.create('ATF_LOG'):
        return 1

    if parseGPFile():
        return 1
    
    ATFUtils.TestEnvObj.create_servershostlist()
    ATFUtils.TestEnvObj.create_clientshostlist()
    return 0

def ConfigSectionMap(section):
    """
    Description:
        Get the key=value pair for the Section 'section' 
        in the GlobalParam File

    Parameters:
        section: Section Name in the GlobalParam File

    Returns:
        Success: Dictionary: List of key=value pairs from section 'section'
        Failure: 1
    """

    dict1 = {}

    try:
        options = Config.options(section)

    except ConfigParser.NoSectionError:
        return 1
    
    else:
        for option in options:
            dict1[option] = Config.get(section, option, raw=True)
            
    return dict1

def parseGPFile():
    """
    Description:
        Parse Global Parameter file

    Parameters:
        filename: Name of GlobalParam File

    Returns:
        Success: 0
        Failure: 1
    """
    
    filename = ATFUtils.TestEnvObj.get_globalparamfile()
    status = Config.read(filename)

    if len(status) == 0:
        ATFUtils.Logger.error("GlobalParam File: " + filename + "Not Found")
        return 1
    else:
        ### Parse Section: [Hosts] ###
        Map = ConfigSectionMap('Hosts')

        if Map == 1:
            ATFUtils.Logger.error(
                        "Section [Hosts] Not Found In GlobalParam File: " + 
                        filename)
            return 1
        else:
            for key in Map.keys():
                name = key
                host = Map[key]
                name = name.lower()
                ATFUtils.TestEnvObj.add_host(name, host)

        ### Parse Section: [Users] ###
        Map = ConfigSectionMap("Users")

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [Users] Not Found In GlobalParam File")
            return 1
        else:
            for key in Map.keys():
                name = key
                user = Map[key]
                name = name.lower()
                ATFUtils.TestEnvObj.add_user(name, user)
                   
        ### Parse Section: [Servers] ###

        Map = ConfigSectionMap('Servers')

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [Servers] Not Found In GlobalParam File")
            return 1
        else:
            for key in Map.keys():
                name = key
                value = Map[key]
                user, host = re.split('@', value)
                name = name.lower()
                if ATFUtils.TestEnvObj.add_server(name, host, user):
                    return 1
                else:
                    continue
                        
        ### Parse Section: [Clients] ###
        Map = ConfigSectionMap('Clients')

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [Clients] Not Found in GlobalParam File")  
            return 1
        else:
            for key in Map.keys():
                name = key
                value = Map[key]
                user, host = re.split('@', value)
                name = name.lower()

                if ATFUtils.TestEnvObj.add_client(name, host, user):
                    return 1
                else:
                    continue

        ### Parse Section: [ExportDirs] ###
        Map = ConfigSectionMap('ExportDirs')

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [ExportDirs] Not Found in GlobalParam File")
            return 1
        else:
            for key in Map.keys():
                exportname = key
                exportdir = Map[key]
                exportname = exportname.lower()
                ATFUtils.TestEnvObj.add_exportdir(exportname, exportdir)
            
        ### Parse Section: [MountPoints] ###
        Map = ConfigSectionMap('MountPoints')

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [MountPoints] Not Found in GlobalParam File")
            return 1
        else:
            for key in Map.keys():
                mountname = key
                mountpoint = Map[key]
                mountname = mountname.lower()
                ATFUtils.TestEnvObj.add_mountpoint(mountname, mountpoint)

        ### Parse Section: [Volumes] ###
        Map = ConfigSectionMap('Volumes')

        if Map == 1:
            ATFUtils.Logger.error(
                "Section [Volumes] Not Found in GlobalParam File")
            return 1
        else:
            for key in Map.keys():
                volumekey = key
                volumename = Map[volumekey]
                volumekey = volumekey.lower()
                ATFUtils.TestEnvObj.add_volume(volumekey, volumename)

        ### Parse Section: [GlusterfsVersion] ###
        Map = ConfigSectionMap('GlusterfsVersion')

        if Map == 1:
            ATFUtils.Logger.warning("Section: [GlusterfsVersion] Not Found")    
        else:
            GlusterfsVersion = Map['version']
            if GlusterfsVersion == None:
                GlusterfsVersion =  ''
                
        ATFUtils.TestsObj.set_version(GlusterfsVersion)
            
        try:
            fhr = open(filename, "r")

        except IOError:
            ATFUtils.Logger.error("IOError:Cannot Open GlobalParam File  " +
                                filename + "For Logging to Summary Log")

        else:
            summarylog = ATFUtils.get_environ('ATF_SUMMARYLOG')
            try:
                fhw = open(summarylog, "a")

            except:
                print "IOError: Cannot Open Summary Log FIle " + summarylog
                ATFUtils.Logger.warning (
                    "Unable to write GlobalParam Contents to SummaryLog: " +
                    summarylog)

                fhr.close()

            else:
                lines = fhr.readlines()
                fhw.write(("-" * 50) + "\nExported GlobalParam File: \n" + 
                        ("-" * 50) + "\n")
                fhw.writelines(lines)

                fhw.close()
                fhr.close()
            
        return 0