
# Testing network scalability, this test suite scales up a network topology
# using mininet and verifies ONOS stability

class SCPFscaleTopo:

    def __init__( self ):
        self.default = ''

    def CASE1( self, main ):
        import time
        import os
        import imp
        import re

        """
        - Construct tests variables
        - GIT ( optional )
            - Checkout ONOS master branch
            - Pull latest ONOS code
        - Building ONOS ( optional )
            - Install ONOS package
            - Build ONOS package
        """

        main.case( "Constructing test variables and building ONOS package" )
        main.step( "Constructing test variables" )
        stepResult = main.FALSE

        try:
            main.testOnDirectory = os.path.dirname( os.getcwd ( ) )
            main.apps = main.params[ 'ENV' ][ 'cellApps' ]
            gitBranch = main.params[ 'GIT' ][ 'branch' ]
            main.dependencyPath = main.testOnDirectory + \
                                  main.params[ 'DEPENDENCY' ][ 'path' ]
            main.topology = main.params[ 'DEPENDENCY' ][ 'topology' ]
            main.multiovs = main.params[ 'DEPENDENCY' ][ 'multiovs' ]
            main.torus = main.params[ 'DEPENDENCY' ][ 'torus' ]
            main.spine = main.params[ 'DEPENDENCY' ][ 'spine' ]
            main.scale = ( main.params[ 'SCALE' ][ 'size' ] ).split( "," )
            if main.ONOSbench.maxNodes:
                main.maxNodes = int( main.ONOSbench.maxNodes )
            else:
                main.maxNodes = 0
            wrapperFile1 = main.params[ 'DEPENDENCY' ][ 'wrapper1' ]
            wrapperFile2 = main.params[ 'DEPENDENCY' ][ 'wrapper2' ]
            wrapperFile3 = main.params[ 'DEPENDENCY' ][ 'wrapper3' ]
            main.startUpSleep = int( main.params[ 'SLEEP' ][ 'startup' ] )
            main.fwdSleep = int( main.params[ 'SLEEP' ][ 'fwd' ] )
            gitPull = main.params[ 'GIT' ][ 'pull' ]
            main.cellData = {} # for creating cell file
            main.hostsData = {}
            main.CLIs = []
            main.ONOSip = []

            main.ONOSip = main.ONOSbench.getOnosIps()
            print main.ONOSip

            # Assigning ONOS cli handles to a list
            for i in range( 1,  main.maxNodes + 1 ):
                main.CLIs.append( getattr( main, 'ONOScli' + str( i ) ) )

            # -- INIT SECTION, ONLY RUNS ONCE -- #
            main.startUp = imp.load_source( wrapperFile1,
                                            main.dependencyPath +
                                            wrapperFile1 +
                                            ".py" )

            main.scaleTopoFunction = imp.load_source( wrapperFile2,
                                                   main.dependencyPath +
                                                   wrapperFile2 +
                                                   ".py" )

            main.topo = imp.load_source( wrapperFile3,
                                         main.dependencyPath +
                                         wrapperFile3 +
                                         ".py" )

            copyResult1 = main.ONOSbench.scp( main.Mininet1,
                                              main.dependencyPath +
                                              main.topology,
                                              main.Mininet1.home,
                                              direction="to" )
            time.sleep(3)
            copyResult2 = main.ONOSbench.scp( main.Mininet1,
                                              main.dependencyPath +
                                              main.multiovs,
                                              main.Mininet1.home,
                                              direction="to" )
            time.sleep(3)
            if main.CLIs:
                stepResult = main.TRUE
            else:
                main.log.error( "Did not properly created list of " +
                                "ONOS CLI handle" )
                stepResult = main.FALSE

        except Exception as e:
            main.log.exception(e)
            main.cleanup()
            main.exit()

        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass="Successfully construct " +
                                        "test variables ",
                                 onfail="Failed to construct test variables" )

        if gitPull == 'True':
            main.step( "Building ONOS in " + gitBranch + " branch" )
            onosBuildResult = main.startUp.onosBuild( main, gitBranch )
            stepResult = onosBuildResult
            utilities.assert_equals( expect=main.TRUE,
                                     actual=stepResult,
                                     onpass="Successfully compiled " +
                                            "latest ONOS",
                                     onfail="Failed to compile " +
                                            "latest ONOS" )
        else:
            main.log.warn( "Did not pull new code so skipping mvn " +
                           "clean install" )
        main.ONOSbench.getVersion( report=True )
        if gitPull == 'True':
            main.step( "Building ONOS in " + gitBranch + " branch" )
            onosBuildResult = main.startUp.onosBuild( main, gitBranch )
            stepResult = onosBuildResult
            utilities.assert_equals( expect=main.TRUE,
                                     actual=stepResult,
                                     onpass="Successfully compiled " +
                                            "latest ONOS",
                                     onfail="Failed to compile " +
                                            "latest ONOS" )
        else:
            main.log.warn( "Did not pull new code so skipping mvn " +
                           "clean install" )

    def CASE2( self, main ):
        """
        - Set up cell
            - Create cell file
            - Set cell file
            - Verify cell file
        - Kill ONOS process
        - Uninstall ONOS cluster
        - Verify ONOS start up
        - Install ONOS cluster
        - Connect to cli
        """

        # main.scale[ 0 ] determines the current number of ONOS controller
        main.numCtrls = int( main.scale[ 0 ] )

        main.case( "Starting up " + str( main.numCtrls ) +
                   " node(s) ONOS cluster" )

        #kill off all onos processes
        main.log.info( "Safety check, killing all ONOS processes" +
                       " before initiating enviornment setup" )

        for i in range( main.maxNodes ):
            main.ONOSbench.onosDie( main.ONOSip[ i ] )

        print "NODE COUNT = ", main.numCtrls

        tempOnosIp = []
        for i in range( main.numCtrls ):
            tempOnosIp.append( main.ONOSip[i] )

        main.ONOSbench.createCellFile( main.ONOSbench.ip_address,
                                       "temp", main.Mininet1.ip_address,
                                       main.apps,
                                       tempOnosIp )

        main.step( "Apply cell to environment" )
        cellResult = main.ONOSbench.setCell( "temp" )
        verifyResult = main.ONOSbench.verifyCell()
        stepResult = cellResult and verifyResult
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass="Successfully applied cell to " + \
                                        "environment",
                                 onfail="Failed to apply cell to environment " )

        main.step( "Creating ONOS package" )
        packageResult = main.ONOSbench.onosPackage()
        stepResult = packageResult
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass="Successfully created ONOS package",
                                 onfail="Failed to create ONOS package" )


        # Remove the first element in main.scale list
        #main.scale.remove( main.scale[ 0 ] )

    def CASE8( self, main ):
        """
        Compare Topo
        """
        import json

        main.case( "Compare ONOS Topology view to Mininet topology" )
        main.caseExplanation = "Compare topology elements between Mininet" +\
                                " and ONOS"

        main.step( "Gathering topology information" )
        # TODO: add a paramaterized sleep here
        devicesResults = main.TRUE
        linksResults = main.TRUE
        hostsResults = main.TRUE
        devices = main.topo.getAllDevices( main )
        hosts = main.topo.getAllHosts( main )
        ports = main.topo.getAllPorts( main )
        links = main.topo.getAllLinks( main )
        clusters = main.topo.getAllClusters( main )

        mnSwitches = main.Mininet1.getSwitches()
        mnLinks = main.Mininet1.getLinks()
        mnHosts = main.Mininet1.getHosts()

        main.step( "Conmparing MN topology to ONOS topology" )
        for controller in range( main.numCtrls ):
            controllerStr = str( controller + 1 )
            if devices[ controller ] and ports[ controller ] and\
                "Error" not in devices[ controller ] and\
                "Error" not in ports[ controller ]:

                currentDevicesResult = main.Mininet1.compareSwitches(
                        mnSwitches,
                        json.loads( devices[ controller ] ),
                        json.loads( ports[ controller ] ) )
            else:
                currentDevicesResult = main.FALSE
            utilities.assert_equals( expect=main.TRUE,
                                     actual=currentDevicesResult,
                                     onpass="ONOS" + controllerStr +
                                     " Switches view is correct",
                                     onfail="ONOS" + controllerStr +
                                     " Switches view is incorrect" )

            if links[ controller ] and "Error" not in links[ controller ]:
                currentLinksResult = main.Mininet1.compareLinks(
                        mnSwitches, mnLinks,
                        json.loads( links[ controller ] ) )
            else:
                currentLinksResult = main.FALSE
            utilities.assert_equals( expect=main.TRUE,
                                     actual=currentLinksResult,
                                     onpass="ONOS" + controllerStr +
                                     " links view is correct",
                                     onfail="ONOS" + controllerStr +
                                     " links view is incorrect" )

            if hosts[ controller ] or "Error" not in hosts[ controller ]:
                currentHostsResult = main.Mininet1.compareHosts(
                        mnHosts,
                        json.loads( hosts[ controller ] ) )
            else:
                currentHostsResult = main.FALSE
            utilities.assert_equals( expect=main.TRUE,
                                     actual=currentHostsResult,
                                     onpass="ONOS" + controllerStr +
                                     " hosts exist in Mininet",
                                     onfail="ONOS" + controllerStr +
                                     " hosts don't match Mininet" )

    def CASE9( self, main ):
        '''
            Report errors/warnings/exceptions
        '''
        main.log.info("Error report: \n" )
        main.ONOSbench.logReport( main.ONOSip[ 0 ],
                                  [ "INFO",
                                    "FOLLOWER",
                                    "WARN",
                                    "flow",
                                    "ERROR",
                                    "Except" ],
                                  "s" )

    def CASE11( self, main ):
        """
            Start mininet
        """
        main.log.report( "Start Mininet topology" )
        main.log.case( "Start Mininet topology" )

        main.step( "Starting Mininet Topology" )
        topology = main.dependencyPath + main.topology
        topoResult = main.Mininet1.startNet( topoFile=topology )
        stepResult = topoResult
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass="Successfully loaded topology",
                                 onfail="Failed to load topology" )
        # Exit if topology did not load properly
        if not topoResult:
            main.cleanup()
            main.exit()

    def CASE1001( self, main ):
        """
            Topology test
        """
        import time
        main.topoName = "SPINE"
        main.case( "Spine topology test" )
        main.step( main.topoName + " topology" )
        mnCmd = "sudo mn --custom " + main.dependencyPath +\
                main.multiovs + " --switch=ovsm --custom " +\
                main.dependencyPath + main.topology +\
                " --topo " + main.spine + " --controller=remote,ip=" +\
                main.ONOSip[ 0 ] + " --mac"

        stepResult = main.scaleTopoFunction.testTopology( main,
                                                          mnCmd=mnCmd,
                                                          timeout=900,
                                                          clean=False )

        time.sleep(3)

        '''
        main.ONOSbench.scp( main.Mininet1,
                           "~/mininet/custom/spine.json",
                           "/tmp/",
                           direction="to" )
        '''
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass=main.spine + " topology successful",
                                 onfail=main.spine +
                                 "Spine topology failed" )

        time.sleep(60)

    def CASE1002( self, main ):
        """
            Topology test
        """
        main.topoName = "TORUS"
        main.case( "Topology discovery test" )
        stepResult = main.TRUE
        main.step( main.torus + " topology" )
        mnCmd = "sudo mn --custom=mininet/custom/multiovs.py " +\
                "--switch=ovsm --topo " + main.torus +\
                " --controller=remote,ip=" + main.ONOSip[ 0 ]  +" --mac"
        stepResult = main.scaleTopoFunction.testTopology( main,
                                                          mnCmd=mnCmd,
                                                          timeout=900,
                                                          clean=True )
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass=main.torus + " topology successful",
                                 onfail=main.torus + " topology failed" )