"""
Description: This test is an example of a simple single node ONOS test
with 2 different topology on one test test
List of test cases:
CASE1: Compile ONOS and push it to the test machine: Also starts first topology
CASE2: Assign mastership to controller: first topology
CASE3: Pingall
CASE4: Creates new topology: second topology
CASE5: Assign mastership to controller: second topology
"""
class MoveHostExample:

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

    def CASE1( self, main ):
        """
           CASE1 is to compile ONOS and push it to the test machines

           Startup sequence:
           git pull
           mvn clean install
           onos-package
           cell <name>
           onos-verify-cell
           onos-install -f
           onos-wait-for-start
        """
        desc = "Testing ping all function on two topology in one test run"
        main.log.report( desc )
        main.case( "Setting up test environment" )

        # load some vairables from the params file
        PULLCODE = False
        if main.params[ 'Git' ] == 'True':
            PULLCODE = True
        cellName = main.params[ 'ENV' ][ 'cellName' ]

        ONOS1Ip = main.params[ 'CTRL' ][ 'ip1' ]

        main.step( "Applying cell variable to environment" )
        cellResult = main.ONOSbench.setCell( cellName )
        verifyResult = main.ONOSbench.verifyCell()

        main.log.report( "Uninstalling ONOS" )
        main.ONOSbench.onosUninstall( ONOS1Ip )

        cleanInstallResult = main.TRUE
        gitPullResult = main.TRUE

        main.step( "Compiling the latest version of ONOS" )
        if PULLCODE:
            main.step( "Git checkout and pull master" )
            main.ONOSbench.gitCheckout( "master" )
            gitPullResult = main.ONOSbench.gitPull()

            main.step( "Using mvn clean & install" )
            cleanInstallResult = main.TRUE
            if gitPullResult == main.TRUE:
                cleanInstallResult = main.ONOSbench.cleanInstall()
            else:
                main.log.warn( "Did not pull new code so skipping mvn " +
                               "clean install" )
        main.ONOSbench.getVersion( report=True )

        cellResult = main.ONOSbench.setCell( cellName )
        verifyResult = main.ONOSbench.verifyCell()
        main.step( "Creating ONOS package" )
        packageResult = main.ONOSbench.onosPackage()

        main.step( "Installing ONOS package" )
        onos1InstallResult = main.ONOSbench.onosInstall( options="-f",
                                                           node=ONOS1Ip )

        main.step( "Checking if ONOS is up yet" )
        for i in range( 2 ):
            onos1Isup = main.ONOSbench.isup( ONOS1Ip )
            if onos1Isup:
                break
        if not onos1Isup:
            main.log.report( "ONOS1 didn't start!" )

        # TODO: if it becomes an issue, we can retry this step  a few times

        cliResult = main.ONOScli1.startOnosCli( ONOS1Ip )

        case1Result = ( cleanInstallResult and packageResult and
                        cellResult and verifyResult and
                        onos1InstallResult and
                        onos1Isup and cliResult )

        utilities.assert_equals( expect=main.TRUE, actual=case1Result,
                                 onpass="Test startup successful",
                                 onfail="Test startup NOT successful" )

        if case1Result == main.FALSE:
            main.cleanup()
            main.exit()
        
        main.step( "Starting Mininet Topology..." )
        netIsUp = main.Mininet1.startNet()
        if netIsUp:
            main.log.info("Mininet topology is up")
        else:
            main.log.info("Mininet did not start")

    def CASE2( self, main ):
        """
           Assign mastership to controller : topology 1 has 13 switches
        """
        import re

        main.log.report( "Assigning switches to controller" )
        main.case( "Assigning Controller" )
        main.step( "Assign switches to controller" )

        ONOS1Ip = main.params[ 'CTRL' ][ 'ip1' ]
        ONOS1Port = main.params[ 'CTRL' ][ 'port1' ]

        for i in range( 1, 4 ):
            main.Mininet1.assignSwController(
                sw=str( i ),
                ip1=ONOS1Ip,
                port1=ONOS1Port )

        mastershipCheck = main.TRUE
        for i in range( 1, 4 ):
            response = main.Mininet1.getSwController( "s" + str( i ) )
            try:
                main.log.info( str( response ) )
            except:
                main.log.info( repr( response ) )
            if re.search( "tcp:" + ONOS1Ip, response ):
                mastershipCheck = mastershipCheck and main.TRUE
            else:
                mastershipCheck = main.FALSE
        if mastershipCheck == main.TRUE:
            main.log.report( "Switch mastership assigned correctly" )
        utilities.assert_equals(
            expect=main.TRUE,
            actual=mastershipCheck,
            onpass="Switch mastership assigned correctly",
            onfail="Switches not assigned correctly to controllers" )

    def CASE3( self, main ):
        """
           Assign intents
        """
        import time

        main.log.report( "Run Pingall" )
        main.case( "Run Pingall" )

        # install onos-app-fwd
        main.log.info( "Install reactive forwarding app" )
        main.ONOScli1.featureInstall( "onos-app-fwd" )

        # REACTIVE FWD test
        pingResult = main.FALSE
        time1 = time.time()
        pingResult = main.Mininet1.pingall()
        time2 = time.time()
        main.log.info( "Time for pingall: %2f seconds" % ( time2 - time1 ) )

        # uninstall onos-app-fwd
        # main.log.info( "Uninstall reactive forwarding app" )
        # main.ONOScli1.featureUninstall( "onos-app-fwd" )

        utilities.assert_equals( expect=main.TRUE, actual=pingResult,
                                 onpass="All hosts are reachable",
                                 onfail="Some pings failed" )
    
    def CASE4( self, main):
        """
        Stop mininet and start a new one using different topology
        """
        main.log.info ("Starts new topology")
        main.log.info( "Stopping Mininet..." )
        main.Mininet1.stopNet()

        main.log.info( "Starting Mininet..." )
        topoFile = main.params[ 'TOPO1' ][ 'file' ]
        args = main.params[ 'TOPO1' ][ 'args' ]
        
        isMnUp = main.FALSE
        isMnUp = main.Mininet1.startNet(topoFile = topoFile, args = args)
        utilities.assert_equals(
                expect=main.TRUE,
                actual=isMnUp,
                onpass="New mininet topology is up and runing",
                onfail="New mininet topology failed to run" )


    def CASE5( self, main):
        """
        Move a host from one switch to another
        """
        
        main.log.info("Moving a host...")
        hostToMove = main.params['MN']['host']
        oldSw = main.params['MN']['oldSw']
        newSw = main.params['MN']['newSw']
        main.log.info( "Moving " + hostToMove + " from " + oldSw + " to " + newSw)
        print "Pingall before host is moved"
        pingResult = main.Mininet1.pingall()

        isHostMoved = main.Mininet1.moveHost(hostToMove,oldSw,newSw)
        print "Pingall after host is moved"

        case4Result = pingResult and isHostMoved
        utilities.assert_equals( expect=main.TRUE, actual=case4Result,
                                 onpass= "All hosts are reachable",
                                 onfail= "Some pings failed" )