"""
    Wrapper functions for FuncIntent
    This functions include Onosclidriver and Mininetclidriver driver functions
    Author: kelvin@onlab.us
"""
import time
import copy
import json
import types

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

def installHostIntent( main,
                       name,
                       host1,
                       host2,
                       onosNode=0,
                       ethType="",
                       bandwidth="",
                       lambdaAlloc=False,
                       ipProto="",
                       ipAddresses="",
                       tcp="",
                       sw1="",
                       sw2=""):
    """
    Installs a Host Intent

    Description:
        Install a host intent using
        add-host-intent

    Steps:
        - Fetch host data if not given
        - Add host intent
            - Ingress device is the first sender host
            - Egress devices are the recipient devices
            - Ports if defined in senders or recipients
            - MAC address ethSrc loaded from Ingress device
        - Check intent state with retry
    Required:
        name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
        host1 - Dictionary for host1
            { "name":"h8", "id":"of:0000000000000005/8" }
        host2 - Dictionary for host2
            { "name":"h16", "id":"of:0000000000000006/8" }
    Optional:
        onosNode - ONOS node to install the intents in main.CLIs[ ]
                   0 by default so that it will always use the first
                   ONOS node
        ethType - Ethernet type eg. IPV4, IPV6
        bandwidth - Bandwidth capacity
        lambdaAlloc - Allocate lambda, defaults to False
        ipProto - IP protocol
        tcp - TCP ports in the same order as the hosts in hostNames
    """

    assert main, "There is no main variable"
    assert host1, "You must specify host1"
    assert host2, "You must specify host2"

    global itemName  # The name of this run. Used for logs.
    itemName = name
    onosNode = int( onosNode )

    main.log.info( itemName + ": Adding single point to multi point intents" )

    try:
        if not host1.get( "id" ):
            main.log.warn( "ID not given for host1 {0}. Loading from main.hostData".format( host1.get( "name" ) ) )
            main.log.debug( main.hostsData.get( host1.get( "name" ) ) )
            host1[ "id" ] = main.hostsData.get( host1.get( "name" ) ).get( "id" )

        if not host2.get( "id" ):
            main.log.warn( "ID not given for host2 {0}. Loading from main.hostData".format( host2.get( "name" ) ) )
            host2[ "id" ] = main.hostsData.get( host2.get( "name" ) ).get( "id" )

        # Adding host intents
        main.log.info( itemName + ": Adding host intents" )

        intent1 = main.CLIs[ onosNode ].addHostIntent( hostIdOne=host1.get( "id" ),
                                                       hostIdTwo=host2.get( "id" ) )

        # Get all intents ID in the system, time delay right after intents are added
        time.sleep( main.addIntentSleep )
        intentsId = main.CLIs[ 0 ].getIntentsId()
    except (KeyError, TypeError):
        errorMsg = "There was a problem loading the hosts data."
        if intentsId:
            errorMsg += "  There was a problem installing host to host intent."
        main.log.error( errorMsg )
        return main.FALSE

    if utilities.retry ( f=checkIntentState, retValue=main.FALSE,
                         args = (main, intentsId ), sleep=main.checkIntentSleep ):
        return intentsId
    else:
        main.log.error( "Host Intent did not install correctly" )
        return main.FALSE

def testHostIntent( main,
                    name,
                    intentId,
                    host1,
                    host2,
                    onosNode=0,
                    sw1="s5",
                    sw2="s2",
                    expectedLink=0):
    """
    Test a Host Intent

    Description:
        Test a host intent of given ID between given hosts

    Steps:
        - Fetch host data if not given
        - Check Intent State
        - Check Flow State
        - Check Connectivity
        - Check Lack of Connectivity Between Hosts not in the Intent
        - Reroute
            - Take Expected Link Down
            - Check Intent State
            - Check Flow State
            - Check Topology
            - Check Connectivity
            - Bring Expected Link Up
            - Check Intent State
            - Check Flow State
            - Check Topology
            - Check Connectivity
        - Remove Topology

    Required:
        name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
        intentId - intent ID to be tested ( and removed )
        host1 - Dictionary for host1
            { "name":"h8", "id":"of:0000000000000005/8" }
        host2 - Dictionary for host2
            { "name":"h16", "id":"of:0000000000000006/8" }
    Optional:
        onosNode - ONOS node to install the intents in main.CLIs[ ]
                   0 by default so that it will always use the first
                   ONOS node
        sw1 - First switch to bring down & up for rerouting purpose
        sw2 - Second switch to bring down & up for rerouting purpose
        expectedLink - Expected link when the switches are down, it should
                       be two links lower than the links before the two
                       switches are down

    """

    # Parameter Validity Check
    assert main, "There is no main variable"
    assert host1, "You must specify host1"
    assert host2, "You must specify host2"

    global itemName
    itemName = name
    tempHostsData = {}
    onosNode = int( onosNode )

    main.log.info( itemName + ": Testing Host Intent" )

    try:
        if not host1.get( "id" ):
            main.log.warn( "Id not given for host1 {0}. Loading from main.hostData".format( host1.get( "name" ) ) )
            host1[ "id" ] = main.hostsData.get( host1.get( "name" ) ).get( "location" )

        if not host2.get( "id" ):
            main.log.warn( "Id not given for host2 {0}. Loading from main.hostData".format( host2.get( "name" ) ) )
            host2[ "id" ] = main.hostsData.get( host2.get( "name" ) ).get( "location" )

        senderNames = [ host1.get( "name" ), host2.get( "name" ) ]
        recipientNames = [ host1.get( "name" ), host2.get( "name" ) ]
    except ( KeyError, TypeError ):
        main.log.error( "There was a problem loading the hosts data." )
        return main.FALSE

    testResult = main.TRUE
    main.log.info( itemName + ": Adding single point to multi point intents" )

    # Check intent state
    if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
        main.assertReturnString += 'Initial Intent State Passed\n'
    else:
        main.assertReturnString += 'Initial Intent State Failed\n'
        testResult = main.FALSE

    # Check flows count in each node
    if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
        main.assertReturnString += 'Initial Flow State Passed\n'
    else:
        main.assertReturnString += 'Intial Flow State Failed\n'
        testResult = main.FALSE

    # Check Connectivity
    if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
        main.assertReturnString += 'Initial Ping Passed\n'
    else:
        main.assertReturnString += 'Initial Ping Failed\n'
        testResult = main.FALSE

    # Test rerouting if these variables exist
    if sw1 and sw2 and expectedLink:
        # Take link down
        if utilities.retry( f=link, retValue=main.FALSE, args=( main, sw1, sw2, "down" ) ):
            main.assertReturnString += 'Link Down Passed\n'
        else:
            main.assertReturnString += 'Link Down Failed\n'
            testResult = main.FALSE

        # Check intent state
        if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
            main.assertReturnString += 'Link Down Intent State Passed\n'
        else:
            main.assertReturnString += 'Link Down Intent State Failed\n'
            testResult = main.FALSE

        # Check flows count in each node
        if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
            main.assertReturnString += 'Link Down Flow State Passed\n'
        else:
            main.assertReturnString += 'Link Down Flow State Failed\n'
            testResult = main.FALSE

        # Check OnosTopology
        if utilities.retry( f=checkTopology, retValue=main.FALSE, args=( main, expectedLink ), sleep=10 ):
            main.assertReturnString += 'Link Down Topology State Passed\n'
        else:
            main.assertReturnString += 'Link Down Topology State Failed\n'
            testResult = main.FALSE

        # Check Connection
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
            main.assertReturnString += 'Link Down Pingall Passed\n'
        else:
            main.assertReturnString += 'Link Down Pingall Failed\n'
            testResult = main.FALSE

        # Bring link up
        if utilities.retry( f=link, retValue=main.FALSE, args=( main, sw1, sw2, "up" ) ):
            main.assertReturnString += 'Link Up Passed\n'
        else:
            main.assertReturnString += 'Link Up Failed\n'
            testResult = main.FALSE

        # Wait for reroute
        time.sleep( main.rerouteSleep )

        # Check Intents
        if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
            main.assertReturnString += 'Link Up Intent State Passed\n'
        else:
            main.assertReturnString += 'Link Up Intent State Failed\n'
            testResult = main.FALSE

        # Check flows count in each node
        if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
            main.assertReturnString += 'Link Up Flow State Passed\n'
        else:
            main.assertReturnString += 'Link Up Flow State Failed\n'
            testResult = main.FALSE

        # Check OnosTopology
        if utilities.retry( f=checkTopology, retValue=main.FALSE, args=( main, main.numLinks ) ):
            main.assertReturnString += 'Link Up Topology State Passed\n'
        else:
            main.assertReturnString += 'Link Up Topology State Failed\n'
            testResult = main.FALSE

        # Check Connection
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
            main.assertReturnString += 'Link Up Pingall Passed\n'
        else:
            main.assertReturnString += 'Link Up Pingall Failed\n'
            testResult = main.FALSE

    # Remove all intents
    if utilities.retry( f=removeAllIntents, retValue=main.FALSE, args=( main, ) ):
        main.assertReturnString += 'Remove Intents Passed'
    else:
        main.assertReturnString += 'Remove Intents Failed'
        testResult = main.FALSE

    return testResult

def installPointIntent( main,
                        name,
                        senders,
                        recipients,
                        onosNode=0,
                        ethType="",
                        bandwidth="",
                        lambdaAlloc=False,
                        ipProto="",
                        ipSrc="",
                        ipDst="",
                        tcpSrc="",
                        tcpDst=""):
    """
    Installs a Single to Single Point Intent

    Description:
        Install a single to single point intent

    Steps:
        - Fetch host data if not given
        - Add point intent
            - Ingress device is the first sender device
            - Egress device is the first recipient device
            - Ports if defined in senders or recipients
            - MAC address ethSrc loaded from Ingress device
        - Check intent state with retry
    Required:
        name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
        senders - List of host dictionaries i.e.
            [ { "name":"h8", "device":"of:0000000000000005/8","mac":"00:00:00:00:00:08" } ]
        recipients - List of host dictionaries i.e.
            [ { "name":"h16", "device":"of:0000000000000006/8", "mac":"00:00:00:00:00:10" } ]
    Optional:
        onosNode - ONOS node to install the intents in main.CLIs[ ]
                   0 by default so that it will always use the first
                   ONOS node
        ethType - Ethernet type eg. IPV4, IPV6
        bandwidth - Bandwidth capacity
        lambdaAlloc - Allocate lambda, defaults to False
        ipProto - IP protocol
        tcp - TCP ports in the same order as the hosts in hostNames
        sw1 - First switch to bring down & up for rerouting purpose
        sw2 - Second switch to bring down & up for rerouting purpose
        expectedLink - Expected link when the switches are down, it should
                       be two links lower than the links before the two
                       switches are down
    """

    assert main, "There is no main variable"
    assert senders, "You must specify a sender"
    assert recipients, "You must specify a recipient"
    # Assert devices or main.hostsData, "You must specify devices"

    global itemName  # The name of this run. Used for logs.
    itemName = name
    onosNode = int( onosNode )

    main.log.info( itemName + ": Adding single to single point intents" )

    try:
        for sender in senders:
            if not sender.get( "device" ):
                main.log.warn( "Device not given for sender {0}. Loading from main.hostData".format( sender.get( "name" ) ) )
                sender[ "device" ] = main.hostsData.get( sender.get( "name" ) ).get( "location" )

        for recipient in recipients:
            if not recipient.get( "device" ):
                main.log.warn( "Device not given for recipient {0}. Loading from main.hostData".format( recipient.get( "name" ) ) )
                recipient[ "device" ] = main.hostsData.get( recipient.get( "name" ) ).get( "location" )


        ingressDevice = senders[ 0 ].get( "device" )
        egressDevice = recipients[ 0 ].get( "device" )

        portIngress = senders[ 0 ].get( "port", "" )
        portEgress = recipients[ 0 ].get( "port", "" )
        main.log.debug( ingressDevice )
        main.log.debug( egressDevice )

        srcMac = senders[ 0 ].get( "mac" )
        dstMac = recipients[ 0 ].get( "mac" )

        ipSrc = senders[ 0 ].get( "ip" )
        ipDst = recipients[ 0 ].get( "ip" )

        intent1 = main.CLIs[ onosNode ].addPointIntent(
                                            ingressDevice=ingressDevice,
                                            egressDevice=egressDevice,
                                            ingressPort=portIngress,
                                            egressPort=portEgress,
                                            ethType=ethType,
                                            ethSrc=srcMac,
                                            ethDst=dstMac,
                                            bandwidth=bandwidth,
                                            lambdaAlloc=lambdaAlloc,
                                            ipProto=ipProto,
                                            ipSrc=ipSrc,
                                            ipDst=ipDst,
                                            tcpSrc=tcpSrc,
                                            tcpDst=tcpDst )

        time.sleep( main.addIntentSleep )
        intentsId = main.CLIs[ 0 ].getIntentsId()
    except (KeyError, TypeError):
        errorMsg = "There was a problem loading the hosts data."
        if intentId:
            errorMsg += "  There was a problem installing Point to Point intent."
        main.log.error( errorMsg )
        return main.FALSE

    # Check intent state
    if utilities.retry ( f=checkIntentState, retValue=main.FALSE,
                         args = (main, intentsId ), sleep=main.checkIntentSleep ):
        return intentsId
    else:
        main.log.error( "Single to Single point intent did not install correctly" )
        return main.FALSE

def testPointIntent( main,
                     name,
                     intentId,
                     senders,
                     recipients,
                     badSenders={},
                     badRecipients={},
                     onosNode=0,
                     ethType="",
                     bandwidth="",
                     lambdaAlloc=False,
                     ipProto="",
                     ipAddresses="",
                     tcp="",
                     sw1="s5",
                     sw2="s2",
                     expectedLink=0):
    """
    Test a Point Intent

    Description:
        Test a point intent

    Steps:
        - Fetch host data if not given
        - Check Intent State
        - Check Flow State
        - Check Connectivity
        - Check Lack of Connectivity Between Hosts not in the Intent
        - Reroute
            - Take Expected Link Down
            - Check Intent State
            - Check Flow State
            - Check Topology
            - Check Connectivity
            - Bring Expected Link Up
            - Check Intent State
            - Check Flow State
            - Check Topology
            - Check Connectivity
        - Remove Topology

    Required:
        name - Type of point intent to add eg. IPV4 | VLAN | Dualstack

        senders - List of host dictionaries i.e.
            { "name":"h8", "device":"of:0000000000000005/8","mac":"00:00:00:00:00:08" }
        recipients - List of host dictionaries i.e.
            { "name":"h16", "device":"of:0000000000000006/8", "mac":"00:00:00:00:00:10" }
    Optional:
        onosNode - ONOS node to install the intents in main.CLIs[ ]
                   0 by default so that it will always use the first
                   ONOS node
        ethType - Ethernet type eg. IPV4, IPV6
        bandwidth - Bandwidth capacity
        lambdaAlloc - Allocate lambda, defaults to False
        ipProto - IP protocol
        tcp - TCP ports in the same order as the hosts in hostNames
        sw1 - First switch to bring down & up for rerouting purpose
        sw2 - Second switch to bring down & up for rerouting purpose
        expectedLink - Expected link when the switches are down, it should
                       be two links lower than the links before the two
                       switches are down

    """

    # Parameter Validity Check
    assert main, "There is no main variable"
    assert senders, "You must specify a sender"
    assert recipients, "You must specify a recipient"

    global itemName
    itemName = name
    tempHostsData = {}
    onosNode = int( onosNode )

    main.log.info( itemName + ": Testing Point Intent" )

    try:
        # Names for scapy
        senderNames = [ x.get( "name" ) for x in senders ]
        recipientNames = [ x.get( "name" ) for x in recipients ]
        badSenderNames = [ x.get( "name" ) for x in badSenders ]
        badRecipientNames = [ x.get( "name" ) for x in badRecipients ]

        for sender in senders:
            if not sender.get( "device" ):
                main.log.warn( "Device not given for sender {0}. Loading from main.hostData".format( sender.get( "name" ) ) )
                sender[ "device" ] = main.hostsData.get( sender.get( "name" ) ).get( "location" )

        for recipient in recipients:
            if not recipient.get( "device" ):
                main.log.warn( "Device not given for recipient {0}. Loading from main.hostData".format( recipient.get( "name" ) ) )
                recipient[ "device" ] = main.hostsData.get( recipient.get( "name" ) ).get( "location" )
    except (KeyError, TypeError):
        main.log.error( "There was a problem loading the hosts data." )
        return main.FALSE

    testResult = main.TRUE
    main.log.info( itemName + ": Testing point intents" )

    # Check intent state
    if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
        main.assertReturnString += 'Initial Intent State Passed\n'
    else:
        main.assertReturnString += 'Initial Intent State Failed\n'
        testResult = main.FALSE

    # Check flows count in each node
    if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
        main.assertReturnString += 'Initial Flow State Passed\n'
    else:
        main.assertReturnString += 'Intial Flow State Failed\n'
        testResult = main.FALSE

    # Check Connectivity
    if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
        main.assertReturnString += 'Initial Ping Passed\n'
    else:
        main.assertReturnString += 'Initial Ping Failed\n'
        testResult = main.FALSE

    # Check connections that shouldn't work
    if badSenderNames:
        main.log.info( "Checking that packets from incorrect sender do not go through" )
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, badSenderNames, recipientNames ), kwargs={ "expectFailure":True } ):
            main.assertReturnString += 'Bad Sender Ping Passed\n'
        else:
            main.assertReturnString += 'Bad Sender Ping Failed\n'
            testResult = main.FALSE

    if badRecipientNames:
        main.log.info( "Checking that packets to incorrect recipients do not go through" )
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, badRecipientNames ), kwargs={ "expectFailure":True } ):
            main.assertReturnString += 'Bad Recipient Ping Passed\n'
        else:
            main.assertReturnString += 'Bad Recipient Ping Failed\n'
            testResult = main.FALSE

    # Test rerouting if these variables exist
    if sw1 and sw2 and expectedLink:
        # Take link down
        if utilities.retry( f=link, retValue=main.FALSE, args=( main, sw1, sw2, "down" ) ):
            main.assertReturnString += 'Link Down Passed\n'
        else:
            main.assertReturnString += 'Link Down Failed\n'
            testResult = main.FALSE

        # Check intent state
        if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
            main.assertReturnString += 'Link Down Intent State Passed\n'
        else:
            main.assertReturnString += 'Link Down Intent State Failed\n'
            testResult = main.FALSE

        # Check flows count in each node
        if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
            main.assertReturnString += 'Link Down Flow State Passed\n'
        else:
            main.assertReturnString += 'Link Down Flow State Failed\n'
            testResult = main.FALSE

        # Check OnosTopology
        if utilities.retry( f=checkTopology, retValue=main.FALSE, args=( main, expectedLink ), sleep=10 ):
            main.assertReturnString += 'Link Down Topology State Passed\n'
        else:
            main.assertReturnString += 'Link Down Topology State Failed\n'
            testResult = main.FALSE

        # Check Connection
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
            main.assertReturnString += 'Link Down Pingall Passed\n'
        else:
            main.assertReturnString += 'Link Down Pingall Failed\n'
            testResult = main.FALSE

        # Bring link up
        if utilities.retry( f=link, retValue=main.FALSE, args=( main, sw1, sw2, "up" ) ):
            main.assertReturnString += 'Link Up Passed\n'
        else:
            main.assertReturnString += 'Link Up Failed\n'
            testResult = main.FALSE

        # Wait for reroute
        time.sleep( main.rerouteSleep )

        # Check Intents
        if utilities.retry( f=checkIntentState, retValue=main.FALSE, args=( main, intentId ), sleep=main.checkIntentSleep ):
            main.assertReturnString += 'Link Up Intent State Passed\n'
        else:
            main.assertReturnString += 'Link Up Intent State Failed\n'
            testResult = main.FALSE

        # Check flows count in each node
        if utilities.retry( f=checkFlowsCount, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ) and utilities.retry( f=checkFlowsState, retValue=main.FALSE, args=[ main ], sleep=20, attempts=3 ):
            main.assertReturnString += 'Link Up Flow State Passed\n'
        else:
            main.assertReturnString += 'Link Up Flow State Failed\n'
            testResult = main.FALSE

        # Check OnosTopology
        if utilities.retry( f=checkTopology, retValue=main.FALSE, args=( main, main.numLinks ) ):
            main.assertReturnString += 'Link Up Topology State Passed\n'
        else:
            main.assertReturnString += 'Link Up Topology State Failed\n'
            testResult = main.FALSE

        # Check Connection
        if utilities.retry( f=scapyCheckConnection, retValue=main.FALSE, args=( main, senderNames, recipientNames ) ):
            main.assertReturnString += 'Link Up Scapy Packet Received Passed\n'
        else:
            main.assertReturnString += 'Link Up Scapy Packet Recieved Failed\n'
            testResult = main.FALSE

    # Remove all intents
    if utilities.retry( f=removeAllIntents, retValue=main.FALSE, args=( main, ) ):
        main.assertReturnString += 'Remove Intents Passed'
    else:
        main.assertReturnString += 'Remove Intents Failed'
        testResult = main.FALSE

    return testResult

def pointIntentTcp( main,
                    name,
                    host1,
                    host2,
                    onosNode=0,
                    deviceId1="",
                    deviceId2="",
                    port1="",
                    port2="",
                    ethType="",
                    mac1="",
                    mac2="",
                    bandwidth="",
                    lambdaAlloc=False,
                    ipProto="",
                    ip1="",
                    ip2="",
                    tcp1="",
                    tcp2="",
                    sw1="",
                    sw2="",
                    expectedLink=0 ):

    """
    Description:
        Verify add-point-intent only for TCP
    Steps:
        - Get device ids | ports
        - Add point intents
        - Check intents
        - Verify flows
        - Ping hosts
        - Reroute
            - Link down
            - Verify flows
            - Check topology
            - Ping hosts
            - Link up
            - Verify flows
            - Check topology
            - Ping hosts
        - Remove intents
    Required:
        name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
        host1 - Name of first host
        host2 - Name of second host
    Optional:
        onosNode - ONOS node to install the intents in main.CLIs[ ]
                   0 by default so that it will always use the first
                   ONOS node
        deviceId1 - ONOS device id of the first switch, the same as the
                    location of the first host eg. of:0000000000000001/1,
                    located at device 1 port 1
        deviceId2 - ONOS device id of the second switch
        port1 - The port number where the first host is attached
        port2 - The port number where the second host is attached
        ethType - Ethernet type eg. IPV4, IPV6
        mac1 - Mac address of first host
        mac2 - Mac address of the second host
        bandwidth - Bandwidth capacity
        lambdaAlloc - Allocate lambda, defaults to False
        ipProto - IP protocol
        ip1 - IP address of first host
        ip2 - IP address of second host
        tcp1 - TCP port of first host
        tcp2 - TCP port of second host
        sw1 - First switch to bring down & up for rerouting purpose
        sw2 - Second switch to bring down & up for rerouting purpose
        expectedLink - Expected link when the switches are down, it should
                       be two links lower than the links before the two
                       switches are down
    """

    assert main, "There is no main variable"
    assert name, "variable name is empty"
    assert host1 and host2, "You must specify hosts"

    global itemName
    itemName = name
    host1 = host1
    host2 = host2
    hostNames = [ host1, host2 ]
    intentsId = []

    iperfResult = main.TRUE
    intentResult = main.TRUE
    removeIntentResult = main.TRUE
    flowResult = main.TRUE
    topoResult = main.TRUE
    linkDownResult = main.TRUE
    linkUpResult = main.TRUE
    onosNode = int( onosNode )

    # Adding bidirectional point  intents
    main.log.info( itemName + ": Adding point intents" )
    intent1 = main.CLIs[ onosNode ].addPointIntent( ingressDevice=deviceId1,
                                                    egressDevice=deviceId2,
                                                    ingressPort=port1,
                                                    egressPort=port2,
                                                    ethType=ethType,
                                                    ethSrc=mac1,
                                                    ethDst=mac2,
                                                    bandwidth=bandwidth,
                                                    lambdaAlloc=lambdaAlloc,
                                                    ipProto=ipProto,
                                                    ipSrc=ip1,
                                                    ipDst=ip2,
                                                    tcpSrc=tcp1,
                                                    tcpDst="" )

    intent2 = main.CLIs[ onosNode ].addPointIntent( ingressDevice=deviceId2,
                                                    egressDevice=deviceId1,
                                                    ingressPort=port2,
                                                    egressPort=port1,
                                                    ethType=ethType,
                                                    ethSrc=mac2,
                                                    ethDst=mac1,
                                                    bandwidth=bandwidth,
                                                    lambdaAlloc=lambdaAlloc,
                                                    ipProto=ipProto,
                                                    ipSrc=ip2,
                                                    ipDst=ip1,
                                                    tcpSrc=tcp2,
                                                    tcpDst="" )

    intent3 = main.CLIs[ onosNode ].addPointIntent( ingressDevice=deviceId1,
                                                    egressDevice=deviceId2,
                                                    ingressPort=port1,
                                                    egressPort=port2,
                                                    ethType=ethType,
                                                    ethSrc=mac1,
                                                    ethDst=mac2,
                                                    bandwidth=bandwidth,
                                                    lambdaAlloc=lambdaAlloc,
                                                    ipProto=ipProto,
                                                    ipSrc=ip1,
                                                    ipDst=ip2,
                                                    tcpSrc="",
                                                    tcpDst=tcp2 )

    intent4 = main.CLIs[ onosNode ].addPointIntent( ingressDevice=deviceId2,
                                                    egressDevice=deviceId1,
                                                    ingressPort=port2,
                                                    egressPort=port1,
                                                    ethType=ethType,
                                                    ethSrc=mac2,
                                                    ethDst=mac1,
                                                    bandwidth=bandwidth,
                                                    lambdaAlloc=lambdaAlloc,
                                                    ipProto=ipProto,
                                                    ipSrc=ip2,
                                                    ipDst=ip1,
                                                    tcpSrc="",
                                                    tcpDst=tcp1 )

    # Get all intents ID in the system, time delay right after intents are added
    time.sleep( main.addIntentSleep )
    intentsId = main.CLIs[ 0 ].getIntentsId()
    # Check intents state
    time.sleep( main.checkIntentSleep )
    intentResult = checkIntentState( main, intentsId )
    # Check flows count in each node
    checkFlowsCount( main )

    # Check intents state again if first check fails...
    if not intentResult:
        intentResult = checkIntentState( main, intentsId )

    # Check flows count in each node
    checkFlowsCount( main )

    # Verify flows
    checkFlowsState( main )

    # Run iperf to both host
    iperfResult = iperfResult and main.Mininet1.iperftcp( host1,
                                                          host2, 10 )

    # Test rerouting if these variables exist
    if sw1 and sw2 and expectedLink:
        # link down
        linkDownResult = link( main, sw1, sw2, "down" )
        intentResult = intentResult and checkIntentState( main, intentsId )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, expectedLink )

        # Run iperf to both host
        iperfResult = iperfResult and main.Mininet1.iperftcp( host1,
                                                              host2, 10 )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link down
        if linkDownResult and topoResult and iperfResult and intentResult:
            main.log.info( itemName + ": Successfully brought link down" )
        else:
            main.log.error( itemName + ": Failed to bring link down" )

        # link up
        linkUpResult = link( main, sw1, sw2, "up" )
        time.sleep( main.rerouteSleep )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, main.numLinks )

        # Run iperf to both host
        iperfResult = iperfResult and main.Mininet1.iperftcp( host1,
                                                              host2, 10 )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link up
        if linkUpResult and topoResult and iperfResult and intentResult:
            main.log.info( itemName + ": Successfully brought link back up" )
        else:
            main.log.error( itemName + ": Failed to bring link back up" )

    # Remove all intents
    removeIntentResult = removeAllIntents( main )

    stepResult = iperfResult and linkDownResult and linkUpResult \
                 and intentResult and removeIntentResult

    return stepResult

def singleToMultiIntent( main,
                         name,
                         hostNames,
                         onosNode=0,
                         devices="",
                         ports=None,
                         ethType="",
                         macs=None,
                         bandwidth="",
                         lambdaAlloc=False,
                         ipProto="",
                         ipAddresses="",
                         tcp="",
                         sw1="",
                         sw2="",
                         expectedLink=0 ):
    """
        Verify Single to Multi Point intents
        NOTE:If main.hostsData is not defined, variables data should be passed
        in the same order index wise. All devices in the list should have the
        same format, either all the devices have its port or it doesn't.
        eg. hostName = [ 'h1', 'h2' ,..  ]
            devices = [ 'of:0000000000000001', 'of:0000000000000002', ...]
            ports = [ '1', '1', ..]
            ...
        Description:
            Verify add-single-to-multi-intent iterates through the list of given
            host | devices and add intents
        Steps:
            - Get device ids | ports
            - Add single to multi point intents
            - Check intents
            - Verify flows
            - Ping hosts
            - Reroute
                - Link down
                - Verify flows
                - Check topology
                - Ping hosts
                - Link up
                - Verify flows
                - Check topology
                - Ping hosts
            - Remove intents
        Required:
            name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
            hostNames - List of host names
        Optional:
            onosNode - ONOS node to install the intents in main.CLIs[ ]
                       0 by default so that it will always use the first
                       ONOS node
            devices - List of device ids in the same order as the hosts
                      in hostNames
            ports - List of port numbers in the same order as the device in
                    devices
            ethType - Ethernet type eg. IPV4, IPV6
            macs - List of hosts mac address in the same order as the hosts in
                   hostNames
            bandwidth - Bandwidth capacity
            lambdaAlloc - Allocate lambda, defaults to False
            ipProto - IP protocol
            ipAddresses - IP addresses of host in the same order as the hosts in
                          hostNames
            tcp - TCP ports in the same order as the hosts in hostNames
            sw1 - First switch to bring down & up for rerouting purpose
            sw2 - Second switch to bring down & up for rerouting purpose
            expectedLink - Expected link when the switches are down, it should
                           be two links lower than the links before the two
                           switches are down
    """

    assert main, "There is no main variable"
    assert hostNames, "You must specify hosts"
    assert devices or main.hostsData, "You must specify devices"

    global itemName
    itemName = name
    tempHostsData = {}
    intentsId = []
    onosNode = int( onosNode )

    macsDict = {}
    ipDict = {}
    if hostNames and devices:
        if len( hostNames ) != len( devices ):
            main.log.debug( "hosts and devices does not have the same length" )
            #print "len hostNames = ", len( hostNames )
            #print "len devices = ", len( devices )
            return main.FALSE
        if ports:
            if len( ports ) != len( devices ):
                main.log.error( "Ports and devices does " +
                                "not have the same length" )
                #print "len devices = ", len( devices )
                #print "len ports = ", len( ports )
                return main.FALSE
        else:
            main.log.info( "Device Ports are not specified" )
        if macs:
            for i in range( len( devices ) ):
                macsDict[ devices[ i ] ] = macs[ i ]

    elif hostNames and not devices and main.hostsData:
        devices = []
        main.log.info( "singleToMultiIntent function is using main.hostsData" )
        for host in hostNames:
               devices.append( main.hostsData.get( host ).get( 'location' ) )
               macsDict[ main.hostsData.get( host ).get( 'location' ) ] = \
                           main.hostsData.get( host ).get( 'mac' )
               ipDict[ main.hostsData.get( host ).get( 'location' ) ] = \
                           main.hostsData.get( host ).get( 'ipAddresses' )
        #print main.hostsData

    #print 'host names = ', hostNames
    #print 'devices = ', devices
    #print "macsDict = ", macsDict

    pingResult = main.TRUE
    intentResult = main.TRUE
    removeIntentResult = main.TRUE
    flowResult = main.TRUE
    topoResult = main.TRUE
    linkDownResult = main.TRUE
    linkUpResult = main.TRUE

    devicesCopy = copy.copy( devices )
    if ports:
        portsCopy = copy.copy( ports )
    main.log.info( itemName + ": Adding single point to multi point intents" )

    # Check flows count in each node
    checkFlowsCount( main )

    # Adding bidirectional point  intents
    for i in range( len( devices ) ):
        ingressDevice = devicesCopy[ i ]
        egressDeviceList = copy.copy( devicesCopy )
        egressDeviceList.remove( ingressDevice )
        if ports:
            portIngress = portsCopy[ i ]
            portEgressList = copy.copy( portsCopy )
            del portEgressList[ i ]
        else:
            portIngress = ""
            portEgressList = None
        if not macsDict:
            srcMac = ""
        else:
            srcMac = macsDict[ ingressDevice ]
            if srcMac == None:
                main.log.debug( "There is no MAC in device - " + ingressDevice )
                srcMac = ""

        intentsId.append(
                        main.CLIs[ onosNode ].addSinglepointToMultipointIntent(
                                            ingressDevice=ingressDevice,
                                            egressDeviceList=egressDeviceList,
                                            portIngress=portIngress,
                                            portEgressList=portEgressList,
                                            ethType=ethType,
                                            ethSrc=srcMac,
                                            bandwidth=bandwidth,
                                            lambdaAlloc=lambdaAlloc,
                                            ipProto=ipProto,
                                            ipSrc="",
                                            ipDst="",
                                            tcpSrc="",
                                            tcpDst="" ) )

    # Wait some time for the flow to go through when using multi instance
    pingResult = pingallHosts( main, hostNames )

    # Check intents state
    time.sleep( main.checkIntentSleep )
    intentResult = checkIntentState( main, intentsId )

    # Check intents state again if first check fails...
    if not intentResult:
        intentResult = checkIntentState( main, intentsId )

    # Check flows count in each node
    checkFlowsCount( main )
    # Verify flows
    checkFlowsState( main )

    pingResult = pingResult and pingallHosts( main, hostNames )

    # Test rerouting if these variables exist
    if sw1 and sw2 and expectedLink:
        # link down
        linkDownResult = link( main, sw1, sw2, "down" )
        intentResult = intentResult and checkIntentState( main, intentsId )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, expectedLink )

        # Ping hosts
        pingResult = pingResult and pingallHosts( main, hostNames )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link down
        if linkDownResult and topoResult and pingResult and intentResult:
            main.log.info( itemName + ": Successfully brought link down" )
        else:
            main.log.error( itemName + ": Failed to bring link down" )

        # link up
        linkUpResult = link( main, sw1, sw2, "up" )
        time.sleep( main.rerouteSleep )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, main.numLinks )

        # Ping hosts
        pingResult = pingResult and pingallHosts( main, hostNames )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link up
        if linkUpResult and topoResult and pingResult and intentResult:
            main.log.info( itemName + ": Successfully brought link back up" )
        else:
            main.log.error( itemName + ": Failed to bring link back up" )

    # Remove all intents
    removeIntentResult = removeAllIntents( main, intentsId )

    stepResult = pingResult and linkDownResult and linkUpResult \
                 and intentResult and removeIntentResult

    return stepResult

def multiToSingleIntent( main,
                         name,
                         hostNames,
                         onosNode=0,
                         devices="",
                         ports=None,
                         ethType="",
                         macs=None,
                         bandwidth="",
                         lambdaAlloc=False,
                         ipProto="",
                         ipAddresses="",
                         tcp="",
                         sw1="",
                         sw2="",
                         expectedLink=0 ):
    """
        Verify Single to Multi Point intents
        NOTE:If main.hostsData is not defined, variables data should be passed in the
        same order index wise. All devices in the list should have the same
        format, either all the devices have its port or it doesn't.
        eg. hostName = [ 'h1', 'h2' ,..  ]
            devices = [ 'of:0000000000000001', 'of:0000000000000002', ...]
            ports = [ '1', '1', ..]
            ...
        Description:
            Verify add-multi-to-single-intent
        Steps:
            - Get device ids | ports
            - Add multi to single point intents
            - Check intents
            - Verify flows
            - Ping hosts
            - Reroute
                - Link down
                - Verify flows
                - Check topology
                - Ping hosts
                - Link up
                - Verify flows
                - Check topology
                - Ping hosts
            - Remove intents
        Required:
            name - Type of point intent to add eg. IPV4 | VLAN | Dualstack
            hostNames - List of host names
        Optional:
            onosNode - ONOS node to install the intents in main.CLIs[ ]
                       0 by default so that it will always use the first
                       ONOS node
            devices - List of device ids in the same order as the hosts
                      in hostNames
            ports - List of port numbers in the same order as the device in
                    devices
            ethType - Ethernet type eg. IPV4, IPV6
            macs - List of hosts mac address in the same order as the hosts in
                   hostNames
            bandwidth - Bandwidth capacity
            lambdaAlloc - Allocate lambda, defaults to False
            ipProto - IP protocol
            ipAddresses - IP addresses of host in the same order as the hosts in
                          hostNames
            tcp - TCP ports in the same order as the hosts in hostNames
            sw1 - First switch to bring down & up for rerouting purpose
            sw2 - Second switch to bring down & up for rerouting purpose
            expectedLink - Expected link when the switches are down, it should
                           be two links lower than the links before the two
                           switches are down
    """

    assert main, "There is no main variable"
    assert hostNames, "You must specify hosts"
    assert devices or main.hostsData, "You must specify devices"

    global itemName
    itemName = name
    tempHostsData = {}
    intentsId = []
    onosNode = int( onosNode )

    macsDict = {}
    ipDict = {}
    if hostNames and devices:
        if len( hostNames ) != len( devices ):
            main.log.debug( "hosts and devices does not have the same length" )
            #print "len hostNames = ", len( hostNames )
            #print "len devices = ", len( devices )
            return main.FALSE
        if ports:
            if len( ports ) != len( devices ):
                main.log.error( "Ports and devices does " +
                                "not have the same length" )
                #print "len devices = ", len( devices )
                #print "len ports = ", len( ports )
                return main.FALSE
        else:
            main.log.info( "Device Ports are not specified" )
        if macs:
            for i in range( len( devices ) ):
                macsDict[ devices[ i ] ] = macs[ i ]
    elif hostNames and not devices and main.hostsData:
        devices = []
        main.log.info( "multiToSingleIntent function is using main.hostsData" )
        for host in hostNames:
               devices.append( main.hostsData.get( host ).get( 'location' ) )
               macsDict[ main.hostsData.get( host ).get( 'location' ) ] = \
                           main.hostsData.get( host ).get( 'mac' )
               ipDict[ main.hostsData.get( host ).get( 'location' ) ] = \
                           main.hostsData.get( host ).get( 'ipAddresses' )
        #print main.hostsData

    #print 'host names = ', hostNames
    #print 'devices = ', devices
    #print "macsDict = ", macsDict

    pingResult = main.TRUE
    intentResult = main.TRUE
    removeIntentResult = main.TRUE
    flowResult = main.TRUE
    topoResult = main.TRUE
    linkDownResult = main.TRUE
    linkUpResult = main.TRUE

    devicesCopy = copy.copy( devices )
    if ports:
        portsCopy = copy.copy( ports )
    main.log.info( itemName + ": Adding multi point to single point intents" )

    # Check flows count in each node
    checkFlowsCount( main )

    # Adding bidirectional point  intents
    for i in range( len( devices ) ):
        egressDevice = devicesCopy[ i ]
        ingressDeviceList = copy.copy( devicesCopy )
        ingressDeviceList.remove( egressDevice )
        if ports:
            portEgress = portsCopy[ i ]
            portIngressList = copy.copy( portsCopy )
            del portIngressList[ i ]
        else:
            portEgress = ""
            portIngressList = None
        if not macsDict:
            dstMac = ""
        else:
            dstMac = macsDict[ egressDevice ]
            if dstMac == None:
                main.log.debug( "There is no MAC in device - " + egressDevice )
                dstMac = ""

        intentsId.append(
                        main.CLIs[ onosNode ].addMultipointToSinglepointIntent(
                                            ingressDeviceList=ingressDeviceList,
                                            egressDevice=egressDevice,
                                            portIngressList=portIngressList,
                                            portEgress=portEgress,
                                            ethType=ethType,
                                            ethDst=dstMac,
                                            bandwidth=bandwidth,
                                            lambdaAlloc=lambdaAlloc,
                                            ipProto=ipProto,
                                            ipSrc="",
                                            ipDst="",
                                            tcpSrc="",
                                            tcpDst="" ) )

    pingResult = pingallHosts( main, hostNames )

    # Check intents state
    time.sleep( main.checkIntentSleep )
    intentResult = checkIntentState( main, intentsId )

    # Check intents state again if first check fails...
    if not intentResult:
        intentResult = checkIntentState( main, intentsId )

    # Check flows count in each node
    checkFlowsCount( main )
    # Verify flows
    checkFlowsState( main )

    # Ping hosts
    pingResult = pingResult and pingallHosts( main, hostNames )
    # Ping hosts again...
    pingResult = pingResult and pingallHosts( main, hostNames )

    # Test rerouting if these variables exist
    if sw1 and sw2 and expectedLink:
        # link down
        linkDownResult = link( main, sw1, sw2, "down" )
        intentResult = intentResult and checkIntentState( main, intentsId )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, expectedLink )

        # Ping hosts
        pingResult = pingResult and pingallHosts( main, hostNames )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link down
        if linkDownResult and topoResult and pingResult and intentResult:
            main.log.info( itemName + ": Successfully brought link down" )
        else:
            main.log.error( itemName + ": Failed to bring link down" )

        # link up
        linkUpResult = link( main, sw1, sw2, "up" )
        time.sleep( main.rerouteSleep )

        # Check flows count in each node
        checkFlowsCount( main )
        # Verify flows
        checkFlowsState( main )

        # Check OnosTopology
        topoResult = checkTopology( main, main.numLinks )

        # Ping hosts
        pingResult = pingResult and pingallHosts( main, hostNames )

        intentResult = checkIntentState( main, intentsId )

        # Checks ONOS state in link up
        if linkUpResult and topoResult and pingResult and intentResult:
            main.log.info( itemName + ": Successfully brought link back up" )
        else:
            main.log.error( itemName + ": Failed to bring link back up" )

    # Remove all intents
    removeIntentResult = removeAllIntents( main, intentsId )

    stepResult = pingResult and linkDownResult and linkUpResult \
                 and intentResult and removeIntentResult

    return stepResult

def pingallHosts( main, hostList ):
    # Ping all host in the hosts list variable
    print "Pinging : ", hostList
    pingResult = main.TRUE
    pingResult = main.Mininet1.pingallHosts( hostList )
    return pingResult

def getHostsData( main, hostList ):
    """
        Use fwd app and pingall to discover all the hosts
    """

    activateResult = main.TRUE
    appCheck = main.TRUE
    getDataResult = main.TRUE
    main.log.info( "Activating reactive forwarding app " )
    activateResult = main.CLIs[ 0 ].activateApp( "org.onosproject.fwd" )
    if not activateResult:
        main.log.error( "Something went wrong installing fwd app" )
    time.sleep( main.fwdSleep )
    if isinstance( hostList[ 0 ], types.StringType ):
        main.Mininet1.pingallHosts( hostList )
    elif isinstance( hostList[ 0 ], types.ListType ):
        for i in xrange( len( hostList ) ):
            main.Mininet1.pingallHosts( hostList[ i ] )

    hostsJson = json.loads( main.CLIs[ 0 ].hosts() )
    hosts = main.Mininet1.getHosts().keys()
    # TODO: Make better use of new getHosts function
    for host in hosts:
        main.hostsData[ host ] = {}
        main.hostsData[ host ][ 'mac' ] =  \
            main.Mininet1.getMacAddress( host ).upper()
        for hostj in hostsJson:
            if main.hostsData[ host ][ 'mac' ] == hostj[ 'mac' ]:
                main.hostsData[ host ][ 'id' ] = hostj[ 'id' ]
                main.hostsData[ host ][ 'vlan' ] = hostj[ 'vlan' ]
                main.hostsData[ host ][ 'location' ] = \
                            hostj[ 'location' ][ 'elementId' ] + '/' + \
                            hostj[ 'location' ][ 'port' ]
                main.hostsData[ host ][ 'ipAddresses' ] = hostj[ 'ipAddresses' ]

    main.log.info( "Deactivating reactive forwarding app " )
    deactivateResult = main.CLIs[ 0 ].deactivateApp( "org.onosproject.fwd" )
    if activateResult and deactivateResult and main.hostsData:
        main.log.info( "Successfully used fwd app to discover hosts " )
        getDataResult = main.TRUE
    else:
        main.log.info( "Failed to use fwd app to discover hosts " )
        getDataResult = main.FALSE

    print main.hostsData

    return getDataResult

def checkTopology( main, expectedLink ):
    statusResult = main.TRUE
    # Check onos topology
    main.log.info( itemName + ": Checking ONOS topology " )

    for i in range( main.numCtrls ):
        topologyResult = main.CLIs[ i ].topology()
        statusResult = main.CLIs[ i ].checkStatus( topologyResult,
                                                   main.numSwitch,
                                                   expectedLink )\
                       and statusResult
    if not statusResult:
        main.log.error( itemName + ": Topology mismatch" )
    else:
        main.log.info( itemName + ": Topology match" )
    return statusResult

def checkIntentState( main, intentsId ):
    """
        This function will check intent state to make sure all the intents
        are in INSTALLED state
    """

    intentResult = main.TRUE
    results = []

    main.log.info( itemName + ": Checking intents state" )
    # First check of intents
    for i in range( main.numCtrls ):
        tempResult = main.CLIs[ i ].checkIntentState( intentsId=intentsId )
        results.append( tempResult )

    expectedState = [ 'INSTALLED', 'INSTALLING' ]

    if all( result == main.TRUE for result in results ):
        main.log.info( itemName + ": Intents are installed correctly" )
    else:
        # Wait for at least 5 second before checking the intents again
        main.log.error( "Intents are not installed correctly. Waiting 5 sec" )
        time.sleep( 5 )
        results = []
        # Second check of intents since some of the intents may be in
        # INSTALLING state, they should be in INSTALLED at this time
        for i in range( main.numCtrls ):
            tempResult = main.CLIs[ i ].checkIntentState( intentsId=intentsId )
            results.append( tempResult )
        if all( result == main.TRUE for result in results ):
            main.log.info( itemName + ": Intents are installed correctly" )
            intentResult = main.TRUE
        else:
            main.log.error( itemName + ": Intents are NOT installed correctly" )
            intentResult = main.FALSE

    return intentResult

def checkFlowsState( main ):

    main.log.info( itemName + ": Check flows state" )
    checkFlowsResult = main.CLIs[ 0 ].checkFlowsState()
    return checkFlowsResult

def link( main, sw1, sw2, option):

    # link down
    main.log.info( itemName + ": Bring link " + option + "between " +
                       sw1 + " and " + sw2 )
    linkResult = main.Mininet1.link( end1=sw1, end2=sw2, option=option )
    return linkResult

def removeAllIntents( main ):
    """
        Remove all intents in the intentsId
    """

    onosSummary = []
    removeIntentResult = main.TRUE
    # Remove intents
    removeIntentResult = main.CLIs[ 0 ].removeAllIntents( )

    if removeIntentResult:
        main.log.info( itemName + ": There are no more intents remaining, " +
                       "successfully removed all the intents." )

    return removeIntentResult

def checkFlowsCount( main ):
    """
        Check flows count in each node
    """

    flowsCount = []
    main.log.info( itemName + ": Checking flows count in each ONOS node" )
    for i in range( main.numCtrls ):
        flowsCount.append( len( json.loads( main.CLIs[ i ].flows() ) ) )

    if flowsCount:
        if all( flows==flowsCount[ 0 ] for flows in flowsCount ):
            main.log.info( itemName + ": There are " + str( flowsCount[ 0 ] ) +
                           " flows in all ONOS node" )
        else:
            for i in range( main.numCtrls ):
                main.log.debug( itemName + ": ONOS node " + str( i + 1 ) +
                                " has " + str( flowsCount[ i ] ) + " flows" )
    else:
        main.log.error( "Checking flows count failed, check summary command" )
        return main.FALSE

    return main.TRUE

def sendDiscoveryArp( main, hosts=None ):
    """
        Sends Discovery ARP packets from each host provided
        Defaults to each host in main.scapyHosts
    """
    # Send an arp ping from each host
    if not hosts:
        hosts = main.scapyHosts
    for host in hosts:
        pkt = 'Ether( src="{0}")/ARP( psrc="{1}")'.format( host.hostMac ,host.hostIp )
        # Send from the VLAN interface if there is one so ONOS discovers the VLAN correctly
        iface = None
        for interface in host.getIfList():
            if '.' in interface:
                main.log.debug( "Detected VLAN interface {0}. Sending ARP packet from {0}".format( interface ) )
                iface = interface
                break
        host.sendPacket( packet=pkt, iface=iface )
        main.log.info( "Sending ARP packet from {0}".format( host.name ) )

def confirmHostDiscovery( main ):
    """
        Confirms that all ONOS nodes have discovered all scapy hosts
    """
    import collections
    scapyHostCount = len( main.scapyHosts )
    hosts = main.topo.getAllHosts( main )  # Get host data from each ONOS node
    hostFails = []  # Reset for each failed attempt

    #  Check for matching hosts on each node
    scapyHostIPs = [ x.hostIp for x in main.scapyHosts if x.hostIp != "0.0.0.0" ]
    for controller in range( main.numCtrls ):
        controllerStr = str( controller + 1 )  # ONOS node number
        # Compare Hosts
        # Load hosts data for controller node
        try:
            if hosts[ controller ]:
                main.log.info( "Hosts discovered" )
            else:
                main.log.error( "Problem discovering hosts" )
            if hosts[ controller ] and "Error" not in hosts[ controller ]:
                try:
                    hostData = json.loads( hosts[ controller ] )
                except ( TypeError, ValueError ):
                    main.log.error( "Could not load json:" + str( hosts[ controller ] ) )
                    hostFails.append( controllerStr )
                else:
                    onosHostIPs = [ x.get( "ipAddresses" )[ 0 ]
                                    for x in hostData
                                    if len( x.get( "ipAddresses" ) ) > 0 ]
                    if not set( collections.Counter( scapyHostIPs ) ).issubset( set ( collections.Counter( onosHostIPs ) ) ):
                        main.log.warn( "Controller {0} only sees nodes with {1} IPs. It should see all of the following: {2}".format( controllerStr, onosHostIPs, scapyHostIPs ) )
                        hostFails.append( controllerStr )
            else:
                main.log.error( "Hosts returned nothing or an error." )
                hostFails.append( controllerStr )
        except IndexError:
            main.log.error( "Hosts returned nothing, Failed to discover hosts." )
            return main.FALSE

    if hostFails:
        main.log.error( "List of failed ONOS Nodes:" + ', '.join(map(str, hostFails )) )
        return main.FALSE
    else:
        return main.TRUE

def populateHostData( main ):
    """
        Populates hostsData
    """
    import json
    try:
        hostsJson = json.loads( main.CLIs[ 0 ].hosts() )
        hosts = main.Mininet1.getHosts().keys()
        # TODO: Make better use of new getHosts function
        for host in hosts:
            main.hostsData[ host ] = {}
            main.hostsData[ host ][ 'mac' ] =  \
                main.Mininet1.getMacAddress( host ).upper()
            for hostj in hostsJson:
                if main.hostsData[ host ][ 'mac' ] == hostj[ 'mac' ]:
                    main.hostsData[ host ][ 'id' ] = hostj[ 'id' ]
                    main.hostsData[ host ][ 'vlan' ] = hostj[ 'vlan' ]
                    main.hostsData[ host ][ 'location' ] = \
                                hostj[ 'location' ][ 'elementId' ] + '/' + \
                                hostj[ 'location' ][ 'port' ]
                    main.hostsData[ host ][ 'ipAddresses' ] = hostj[ 'ipAddresses' ]
        return main.TRUE
    except ValueError:
        main.log.error( "ValueError while populating hostsData" )
        return main.FALSE
    except KeyError:
        main.log.error( "KeyError while populating hostsData")
        return main.FALSE
    except IndexError:
        main.log.error( "IndexError while populating hostsData" )
        return main.FALSE
    except TypeError:
        main.log.error( "TypeError while populating hostsData" )
        return main.FALSE

def scapyCheckConnection( main, senders, recipients, packet=None, packetFilter=None, expectFailure=False ):
    """
        Checks the connectivity between all given sender hosts and all given recipient hosts
        Packet may be specified. Defaults to Ether/IP packet
        Packet Filter may be specified. Defaults to Ether/IP from current sender MAC
            Todo: Optional packet and packet filter attributes for sender and recipients
        Expect Failure when the sender and recipient are not supposed to have connectivity
            Timeout of 1 second, returns main.TRUE if the filter is not triggered and kills the filter

    """
    connectionsFunctional = main.TRUE

    if not packetFilter:
        packetFilter = 'ether host {}'

    if expectFailure:
        timeout = 1
    else:
        timeout = 10

    for sender in senders:
        try:
            senderComp = getattr( main, sender )
        except AttributeError:
            main.log.error( "main has no attribute {}".format( sender ) )
            connectionsFunctional = main.FALSE
            continue

        for recipient in recipients:
            # Do not send packets to self since recipient CLI will already be busy
            if recipient == sender:
                continue
            try:
                recipientComp = getattr( main, recipient )
            except AttributeError:
                main.log.error( "main has no attribute {}".format( recipient ) )
                connectionsFunctional = main.FALSE
                continue

            recipientComp.startFilter( pktFilter = packetFilter.format( senderComp.hostMac ) )

            if not packet:
                pkt = 'Ether( src="{0}", dst="{2}" )/IP( src="{1}", dst="{3}" )'.format(
                    senderComp.hostMac,
                    senderComp.hostIp,
                    recipientComp.hostMac,
                    recipientComp.hostIp )
            else:
                pkt = packet
            senderComp.sendPacket( packet = pkt )

            if recipientComp.checkFilter( timeout ):
                if expectFailure:
                    main.log.error( "Packet from {0} successfully received by {1} when it should not have been".format( sender , recipient ) )
                    connectionsFunctional = main.FALSE
                else:
                    main.log.info( "Packet from {0} successfully received by {1}".format( sender , recipient ) )
            else:
                recipientComp.killFilter()
                if expectFailure:
                    main.log.info( "As expected, packet from {0} was not received by {1}".format( sender , recipient ) )
                else:
                    main.log.error( "Packet from {0} was not received by {1}".format( sender , recipient ) )
                    connectionsFunctional = main.FALSE

        return connectionsFunctional

def checkLeaderChange( leaders1, leaders2 ):
    """
        Checks for a change in intent partition leadership.

        Takes the output of leaders -c in json string format before and after
        a potential change as input

        Returns main.TRUE if no mismatches are detected
        Returns main.FALSE if there is a mismatch or on error loading the input
    """
    try:
        leaders1 = json.loads( leaders1 )
        leaders2 = json.loads( leaders2 )
    except ( AttributeError, TypeError):
        main.log.exception( self.name + ": Object not as expected" )
        return main.FALSE
    except Exception:
        main.log.exception( self.name + ": Uncaught exception!" )
        main.cleanup()
        main.exit()
    main.log.info( "Checking Intent Paritions for Change in Leadership" )
    mismatch = False
    for dict1 in leaders1:
        if "intent" in dict1.get( "topic", [] ):
            for dict2 in leaders2:
                if dict1.get( "topic", 0 ) == dict2.get( "topic", 0 ) and \
                    dict1.get( "leader", 0 ) != dict2.get( "leader", 0 ):
                    mismatch = True
                    main.log.error( "{0} changed leader from {1} to {2}".\
                        format( dict1.get( "topic", "no-topic" ),\
                            dict1.get( "leader", "no-leader" ),\
                            dict2.get( "leader", "no-leader" ) ) )
    if mismatch:
        return main.FALSE
    else:
        return main.TRUE


def report( main ):
    """
        Report errors/warnings/exceptions
    """
    main.ONOSbench.logReport( main.ONOSip[ 0 ],
                              [ "INFO",
                                "FOLLOWER",
                                "WARN",
                                "flow",
                                "ERROR",
                                "Except" ],
                              "s" )

    main.log.info( "ERROR report: \n" )
    for i in range( main.numCtrls ):
        main.ONOSbench.logReport( main.ONOSip[ i ],
                [ "ERROR" ],
                "d" )

    main.log.info( "EXCEPTIONS report: \n" )
    for i in range( main.numCtrls ):
        main.ONOSbench.logReport( main.ONOSip[ i ],
                [ "Except" ],
                "d" )

    main.log.info( "WARNING report: \n" )
    for i in range( main.numCtrls ):
        main.ONOSbench.logReport( main.ONOSip[ i ],
                [ "WARN" ],
                "d" )