#!/usr/bin/env python
# SPDX-License-Identifier: ISC

#
# Copyright (c) 2020 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation,
# Inc. ("NetDEF") in this file.
#

"""
Following tests are covered to test multicast pim sm:

Test steps
- Create topology (setup module)
- Bring up topology

Following tests are covered:
1. Configure IGMP local join on DR and non DR
"""

import os
import sys
import json
import time
import datetime
from time import sleep
import pytest

# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
sys.path.append(os.path.join(CWD, "../lib/"))

# Required to instantiate the topology builder class.

# pylint: disable=C0413
# Import topogen and topotest helpers
from lib.topogen import Topogen, get_topogen

from lib.common_config import (
    start_topology,
    write_test_header,
    write_test_footer,
    step,
    reset_config_on_routers,
    shutdown_bringup_interface,
    apply_raw_config,
    add_interfaces_to_vlan,
    kill_router_daemons,
    start_router_daemons,
    create_static_routes,
    check_router_status,
    topo_daemons,
    required_linux_kernel_version,
)
from lib.pim import (
    create_pim_config,
    create_igmp_config,
    verify_mroutes,
    clear_mroute,
    clear_pim_interface_traffic,
    verify_pim_config,
    verify_upstream_iif,
    verify_multicast_traffic,
    verify_multicast_flag_state,
    verify_igmp_groups,
    McastTesterHelper,
)
from lib.topolog import logger
from lib.topojson import build_config_from_json

HELLO_TIMER = 1
HOLD_TIMER = 3

pytestmark = [pytest.mark.pimd]

TOPOLOGY = """

Descripton: Configuring OSPF on r1/r2/r4/r5 for RP reachablility.
IPs are assigned automatically to routers, start IP and subnet is defined in respective JSON file
JSON snippet:
    "link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24},

                               r5 ------- i2
                    10.0.3.2/24| 10.0.0.2/24
                               |
                    10.0.3.1/24|
                  ------------ r4 ----------
                |   10.0.1.2/24  10.0.2.2/24 |
    10.0.1.1/24 |                            | 10.0.2.1/24
                r1 ----------- s1 ---------- r2
                  10.0.4.2/24  | 10.0.4.3/24
                               |
                               |10.0.4.1/24
                               i1

    Description:
    i1, i2  - FRR running iperf to send IGMP
                                     join and traffic
    r1, r2, r4, r5 - FRR router
    s1 - OVS switch
"""

# Global variables
VLAN_1 = 2501
GROUP_RANGE = "225.0.0.0/8"
IGMP_JOIN = "225.1.1.1"
VLAN_INTF_ADRESS_1 = "10.0.8.3/24"
SAME_VLAN_IP_1 = {"ip": "10.1.1.1", "subnet": "255.255.255.0", "cidr": "24"}
SAME_VLAN_IP_2 = {"ip": "10.1.1.2", "subnet": "255.255.255.0", "cidr": "24"}
SAME_VLAN_IP_3 = {"ip": "10.1.1.3", "subnet": "255.255.255.0", "cidr": "24"}
SAME_VLAN_IP_4 = {"ip": "10.1.1.4", "subnet": "255.255.255.0", "cidr": "24"}
GROUP_RANGE_1 = ["225.1.1.1/32", "225.1.1.2/32"]
IGMP_JOIN_RANGE_1 = ["225.1.1.1", "225.1.1.2"]
GROUP_RANGE_2 = ["226.1.1.1/32", "226.1.1.2/32"]
IGMP_JOIN_RANGE_2 = ["226.1.1.1", "226.1.1.2"]
GROUP_RANGE_3 = ["227.1.1.1/32", "227.1.1.2/32"]
IGMP_JOIN_RANGE_3 = ["227.1.1.1", "227.1.1.2"]

intf_r1_s1 = None
intf_r1_s1_addr = None
intf_r2_s1 = None
intf_r2_s1_addr = None
intf_r3_s1 = None
intf_r3_s1_addr = None
intf_i1_s1 = None
intf_i1_s1_addr = None


def setup_module(mod):
    """
    Sets up the pytest environment

    * `mod`: module name
    """

    # Required linux kernel version for this suite to run.
    result = required_linux_kernel_version("4.19")
    if result is not True:
        pytest.skip("Kernel requirements are not met")

    testsuite_run_time = time.asctime(time.localtime(time.time()))
    logger.info("Testsuite start time: {}".format(testsuite_run_time))
    logger.info("=" * 40)
    logger.info("Master Topology: \n {}".format(TOPOLOGY))

    logger.info("Running setup_module to create topology")

    testdir = os.path.dirname(os.path.realpath(__file__))
    json_file = "{}/pim_dr_nondr_with_ospf_topo2.json".format(testdir)
    tgen = Topogen(json_file, mod.__name__)
    global topo
    topo = tgen.json_topo
    # ... and here it calls Mininet initialization functions.

    # Starting topology, create tmp files which are loaded to routers
    #  to start deamons and then start routers
    start_topology(tgen)

    # Don"t run this test if we have any failure.
    if tgen.routers_have_failure():
        pytest.skip(tgen.errors)

    # Creating configuration from JSON
    build_config_from_json(tgen, tgen.json_topo)

    # XXX Replace this using "with McastTesterHelper()... " in each test if possible.
    global app_helper
    app_helper = McastTesterHelper(tgen)

    logger.info("Running setup_module() done")


def teardown_module():
    """Teardown the pytest environment"""

    logger.info("Running teardown_module to delete topology")

    tgen = get_topogen()

    app_helper.cleanup()

    # Stop toplogy and Remove tmp files
    tgen.stop_topology()

    logger.info(
        "Testsuite end time: {}".format(time.asctime(time.localtime(time.time())))
    )
    logger.info("=" * 40)


#####################################################
#
#   Local APIs
#
#####################################################


def pre_config_for_receiver_dr_tests(
    tgen, topo, tc_name, highest_priority, lowest_priority
):
    """
    API to do common pre-configuration for receiver test cases

    parameters:
    -----------
    * `tgen`: topogen object
    * `topo`: input json data
    * `tc_name`: caller test case name
    * `highest_priority`: router which will be having highest DR priority
    * `lowest_priority`: router which will be having lowest DR priority
    """

    global intf_r1_s1, intf_r1_s1_addr, intf_r2_s1, intf_r2_s1_addr, intf_i1_s1, intf_i1_s1_addr

    step("Configure IGMP and PIM on switch connected receiver nodes")
    step("Configure PIM on all upstream interfaces")

    step("Configure link between R1, R2 ,R3 and receiver on" " same vlan")
    step(
        "Make sure {0} is DR initially configuring highest IP on {0} and R2 "
        "second highest, {1} is lower".format(highest_priority, lowest_priority)
    )

    intf_r1_s1 = topo["routers"]["r1"]["links"]["s1"]["interface"]
    intf_r1_s1_addr = topo["routers"]["r1"]["links"]["s1"]["ipv4"]

    intf_r2_s1 = topo["routers"]["r2"]["links"]["s1"]["interface"]
    intf_r2_s1_addr = topo["routers"]["r2"]["links"]["s1"]["ipv4"]

    intf_i1_s1 = topo["routers"]["i1"]["links"]["s1"]["interface"]
    intf_i1_s1_addr = topo["routers"]["i1"]["links"]["s1"]["ipv4"]

    if lowest_priority == "r1":
        lowest_pr_intf = intf_r1_s1
    else:
        lowest_pr_intf = intf_r2_s1

    if highest_priority == "r1":
        highest_pr_intf = intf_r1_s1
    else:
        highest_pr_intf = intf_r2_s1

    vlan_input = {
        lowest_priority: {
            "vlan": {
                VLAN_1: [
                    {
                        lowest_pr_intf: {
                            "ip": SAME_VLAN_IP_1["ip"],
                            "subnet": SAME_VLAN_IP_1["subnet"],
                        }
                    }
                ]
            }
        },
        highest_priority: {
            "vlan": {
                VLAN_1: [
                    {
                        highest_pr_intf: {
                            "ip": SAME_VLAN_IP_2["ip"],
                            "subnet": SAME_VLAN_IP_2["subnet"],
                        }
                    }
                ]
            }
        },
        "i1": {
            "vlan": {
                VLAN_1: [
                    {
                        intf_i1_s1: {
                            "ip": SAME_VLAN_IP_4["ip"],
                            "subnet": SAME_VLAN_IP_4["subnet"],
                        }
                    }
                ]
            }
        },
    }

    add_interfaces_to_vlan(tgen, vlan_input)

    raw_config = {
        "r1": {
            "raw_config": [
                "interface {}".format(intf_r1_s1),
                "no ip address {}".format(intf_r1_s1_addr),
                "no ip pim",
            ]
        },
        "r2": {
            "raw_config": [
                "interface {}".format(intf_r2_s1),
                "no ip address {}".format(intf_r2_s1_addr),
                "no ip pim",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}".format(intf_i1_s1),
                "no ip address {}".format(intf_i1_s1_addr),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    raw_config = {
        lowest_priority: {
            "raw_config": [
                "interface {}.{}".format(lowest_pr_intf, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_1["ip"], SAME_VLAN_IP_1["cidr"]),
                "ip pim",
                "ip igmp",
                "ip igmp version 2",
            ]
        },
        highest_priority: {
            "raw_config": [
                "interface {}.{}".format(highest_pr_intf, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_2["ip"], SAME_VLAN_IP_2["cidr"]),
                "ip pim",
                "ip igmp",
                "ip igmp version 2",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}.{}".format(intf_i1_s1, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_4["ip"], SAME_VLAN_IP_4["cidr"]),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        raw_config = {
            dut: {
                "raw_config": [
                    "interface {}.{}".format(intf, VLAN_1),
                    "ip pim hello {} {}".format(HELLO_TIMER, HOLD_TIMER),
                ]
            }
        }
        result = apply_raw_config(tgen, raw_config)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Configure R4 as RP on all the nodes for group range 224.0.0.0/24")

    input_dict = {
        "r4": {
            "pim": {
                "rp": [
                    {
                        "rp_addr": topo["routers"]["r4"]["links"]["lo"]["ipv4"].split(
                            "/"
                        )[0],
                        "group_addr_range": GROUP_RANGE_1,
                    }
                ]
            }
        }
    }

    result = create_pim_config(tgen, topo, input_dict)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Send IGMP join for groups 226.1.1.1 to 226.1.1.5")

    vlan_intf_i1_s1 = "{}.{}".format(intf_i1_s1, VLAN_1)
    result = app_helper.run_join("i1", IGMP_JOIN_RANGE_1, join_intf=vlan_intf_i1_s1)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step("Enable OSPF between r1 and r2")

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        raw_config = {
            dut: {
                "raw_config": [
                    "interface {}.{}".format(intf, VLAN_1),
                    "ip ospf area 0.0.0.0",
                    "ip ospf dead-interval 4",
                    "ip ospf hello-interval 1",
                ]
            }
        }
        result = apply_raw_config(tgen, raw_config)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Start traffic from R4 connected source")

    result = app_helper.run_traffic("i2", IGMP_JOIN_RANGE_1, "r5")
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    return True


def pre_config_for_source_dr_tests(
    tgen, topo, tc_name, highest_priority, lowest_priority
):
    """
    API to do common pre-configuration for source test cases

    parameters:
    -----------
    * `tgen`: topogen object
    * `topo`: input json data
    * `tc_name`: caller test case name
    * `highest_priority`: router which will be having highest DR priority
    * `lowest_priority`: router which will be having lowest DR priority
    """

    global intf_r1_s1, intf_r1_s1_addr, intf_r2_s1, intf_r2_s1_addr, intf_i1_s1, intf_i1_s1_addr

    step("Configure IGMP and PIM on switch connected receiver nodes")
    step("Configure PIM on all upstream interfaces")

    step("Configure link between R1, R2 ,R3 and receiver on" " same vlan")
    step(
        "Make sure {0} is DR initially configuring highest IP on {0} and R2 "
        "second highest, {1} is lower".format(highest_priority, lowest_priority)
    )

    intf_r1_s1 = topo["routers"]["r1"]["links"]["s1"]["interface"]
    intf_r1_s1_addr = topo["routers"]["r1"]["links"]["s1"]["ipv4"]

    intf_r2_s1 = topo["routers"]["r2"]["links"]["s1"]["interface"]
    intf_r2_s1_addr = topo["routers"]["r2"]["links"]["s1"]["ipv4"]

    intf_i1_s1 = topo["routers"]["i1"]["links"]["s1"]["interface"]
    intf_i1_s1_addr = topo["routers"]["i1"]["links"]["s1"]["ipv4"]

    if lowest_priority == "r1":
        lowest_pr_intf = intf_r1_s1
    else:
        lowest_pr_intf = intf_r2_s1

    if highest_priority == "r1":
        highest_pr_intf = intf_r1_s1
    else:
        highest_pr_intf = intf_r2_s1

    vlan_input = {
        lowest_priority: {
            "vlan": {
                VLAN_1: [
                    {
                        lowest_pr_intf: {
                            "ip": SAME_VLAN_IP_1["ip"],
                            "subnet": SAME_VLAN_IP_1["subnet"],
                        }
                    }
                ]
            }
        },
        highest_priority: {
            "vlan": {
                VLAN_1: [
                    {
                        highest_pr_intf: {
                            "ip": SAME_VLAN_IP_2["ip"],
                            "subnet": SAME_VLAN_IP_2["subnet"],
                        }
                    }
                ]
            }
        },
        "i1": {
            "vlan": {
                VLAN_1: [
                    {
                        intf_i1_s1: {
                            "ip": SAME_VLAN_IP_4["ip"],
                            "subnet": SAME_VLAN_IP_4["subnet"],
                        }
                    }
                ]
            }
        },
    }

    add_interfaces_to_vlan(tgen, vlan_input)

    raw_config = {
        "r1": {
            "raw_config": [
                "interface {}".format(intf_r1_s1),
                "no ip address {}".format(intf_r1_s1_addr),
                "no ip pim",
            ]
        },
        "r2": {
            "raw_config": [
                "interface {}".format(intf_r2_s1),
                "no ip address {}".format(intf_r2_s1_addr),
                "no ip pim",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}".format(intf_i1_s1),
                "no ip address {}".format(intf_i1_s1_addr),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step(
        "Configure IGMP and PIM on switch connected receiver nodes , "
        "configure PIM nbr with hello timer 1"
    )

    raw_config = {
        lowest_priority: {
            "raw_config": [
                "interface {}.{}".format(lowest_pr_intf, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_1["ip"], SAME_VLAN_IP_1["cidr"]),
                "ip pim",
            ]
        },
        highest_priority: {
            "raw_config": [
                "interface {}.{}".format(highest_pr_intf, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_2["ip"], SAME_VLAN_IP_2["cidr"]),
                "ip pim",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}.{}".format(intf_i1_s1, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_4["ip"], SAME_VLAN_IP_4["cidr"]),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        raw_config = {
            dut: {
                "raw_config": [
                    "interface {}.{}".format(intf, VLAN_1),
                    "ip pim hello {} {}".format(HELLO_TIMER, HOLD_TIMER),
                ]
            }
        }
        result = apply_raw_config(tgen, raw_config)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Configure R4 as RP on all the nodes for group range 224.0.0.0/24")

    input_dict = {
        "r4": {
            "pim": {
                "rp": [
                    {
                        "rp_addr": topo["routers"]["r4"]["links"]["lo"]["ipv4"].split(
                            "/"
                        )[0],
                        "group_addr_range": GROUP_RANGE_1,
                    }
                ]
            }
        }
    }

    result = create_pim_config(tgen, topo, input_dict)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Configure IGMP on R5 port and send IGMP join for groups " "(226.1.1.1-5)")

    intf_r5_i2 = topo["routers"]["r5"]["links"]["i2"]["interface"]
    input_dict = {
        "r5": {"igmp": {"interfaces": {intf_r5_i2: {"igmp": {"version": "2"}}}}}
    }
    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    result = app_helper.run_join("i2", IGMP_JOIN_RANGE_1, "r5")
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step("Enable OSPF between r1 and r2")

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        raw_config = {
            dut: {
                "raw_config": [
                    "interface {}.{}".format(intf, VLAN_1),
                    "ip ospf area 0.0.0.0",
                    "ip ospf dead-interval 4",
                    "ip ospf hello-interval 1",
                ]
            }
        }
        result = apply_raw_config(tgen, raw_config)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Start traffic from Source node")

    vlan_intf_i1_s1 = "{}.{}".format(intf_i1_s1, VLAN_1)
    result = app_helper.run_traffic("i1", IGMP_JOIN_RANGE_1, bind_intf=vlan_intf_i1_s1)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    return True


#####################################################
#
#   Testcases
#
#####################################################


def test_configuring_igmp_local_join_on_reciever_dr_non_dr_nodes_p1(request):
    """
    Configure IGMP local join on DR and non DR
    """

    tgen = get_topogen()
    tc_name = request.node.name
    write_test_header(tc_name)

    # Creating configuration from JSON
    app_helper.stop_all_hosts()
    clear_mroute(tgen)
    check_router_status(tgen)
    reset_config_on_routers(tgen)
    clear_pim_interface_traffic(tgen, topo)

    # Don"t run this test if we have any failure.
    if tgen.routers_have_failure():
        pytest.skip(tgen.errors)

    step("Configure IGMP and PIM on switch connected receiver nodes")
    step("Configure PIM on all upstream interfaces")

    step("Configure link between R1, R2 ,R3 and receiver on" " same vlan")
    step(
        "Make sure R1 is DR initially configuring highest IP on R1 and R2 "
        "second highest, R1 is lower"
    )

    intf_r1_s1 = topo["routers"]["r1"]["links"]["s1"]["interface"]
    intf_r1_s1_addr = topo["routers"]["r1"]["links"]["s1"]["ipv4"]

    intf_r2_s1 = topo["routers"]["r2"]["links"]["s1"]["interface"]
    intf_r2_s1_addr = topo["routers"]["r2"]["links"]["s1"]["ipv4"]

    intf_i1_s1 = topo["routers"]["i1"]["links"]["s1"]["interface"]
    intf_i1_s1_addr = topo["routers"]["i1"]["links"]["s1"]["ipv4"]

    vlan_input = {
        "r1": {
            "vlan": {
                VLAN_1: [
                    {
                        intf_r1_s1: {
                            "ip": SAME_VLAN_IP_1["ip"],
                            "subnet": SAME_VLAN_IP_1["subnet"],
                        }
                    }
                ]
            }
        },
        "r2": {
            "vlan": {
                VLAN_1: [
                    {
                        intf_r2_s1: {
                            "ip": SAME_VLAN_IP_2["ip"],
                            "subnet": SAME_VLAN_IP_2["subnet"],
                        }
                    }
                ]
            }
        },
        "i1": {
            "vlan": {
                VLAN_1: [
                    {
                        intf_i1_s1: {
                            "ip": SAME_VLAN_IP_4["ip"],
                            "subnet": SAME_VLAN_IP_4["subnet"],
                        }
                    }
                ]
            }
        },
    }

    add_interfaces_to_vlan(tgen, vlan_input)

    raw_config = {
        "r1": {
            "raw_config": [
                "interface {}".format(intf_r1_s1),
                "no ip address {}".format(intf_r1_s1_addr),
                "no ip pim",
            ]
        },
        "r2": {
            "raw_config": [
                "interface {}".format(intf_r2_s1),
                "no ip address {}".format(intf_r2_s1_addr),
                "no ip pim",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}".format(intf_i1_s1),
                "no ip address {}".format(intf_i1_s1_addr),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    raw_config = {
        "r1": {
            "raw_config": [
                "interface {}.{}".format(intf_r1_s1, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_1["ip"], SAME_VLAN_IP_1["cidr"]),
                "ip pim",
                "ip igmp",
                "ip igmp version 2",
            ]
        },
        "r2": {
            "raw_config": [
                "interface {}.{}".format(intf_r2_s1, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_2["ip"], SAME_VLAN_IP_2["cidr"]),
                "ip pim",
                "ip igmp",
                "ip igmp version 2",
            ]
        },
        "i1": {
            "raw_config": [
                "interface {}.{}".format(intf_i1_s1, VLAN_1),
                "ip address {}/{}".format(SAME_VLAN_IP_4["ip"], SAME_VLAN_IP_4["cidr"]),
            ]
        },
    }

    result = apply_raw_config(tgen, raw_config)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        raw_config = {
            dut: {
                "raw_config": [
                    "interface {}.{}".format(intf, VLAN_1),
                    "ip pim hello {} {}".format(HELLO_TIMER, HOLD_TIMER),
                ]
            }
        }
        result = apply_raw_config(tgen, raw_config)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Configure R4 as RP on all the nodes for group range 224.0.0.0/24")

    input_dict = {
        "r4": {
            "pim": {
                "rp": [
                    {
                        "rp_addr": topo["routers"]["r4"]["links"]["lo"]["ipv4"].split(
                            "/"
                        )[0],
                        "group_addr_range": GROUP_RANGE_1 + GROUP_RANGE_3,
                    }
                ]
            }
        }
    }

    result = create_pim_config(tgen, topo, input_dict)
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Send IGMP local join for groups 226.1.1.1 to 226.1.1.5")

    vlan_intf_r1_s1 = "{}.{}".format(intf_r1_s1, VLAN_1)
    input_dict = {
        "r1": {
            "igmp": {
                "interfaces": {
                    vlan_intf_r1_s1: {
                        "igmp": {"version": "2", "join": IGMP_JOIN_RANGE_1}
                    }
                }
            }
        }
    }

    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step("Enable OSPF between all the nodes")

    step("Configure local join on R1 for group range (227.1.1.1)")

    vlan_intf_r1_s1 = "{}.{}".format(intf_r1_s1, VLAN_1)
    input_dict = {
        "r1": {
            "igmp": {
                "interfaces": {
                    vlan_intf_r1_s1: {
                        "igmp": {"version": "2", "join": IGMP_JOIN_RANGE_3}
                    }
                }
            }
        }
    }

    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step("Start traffic from R4 connected source")

    input_src = {"i2": topo["routers"]["i2"]["links"]["r5"]["interface"]}

    result = app_helper.run_traffic("i2", IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3, "r5")
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("R1, R2 and R2 has IGMP groups for 226.x.x.x and 227.1.1.1 groups")

    intf_r1_s1 = "{}.{}".format(
        topo["routers"]["r1"]["links"]["s1"]["interface"], VLAN_1
    )
    intf_r2_s1 = "{}.{}".format(
        topo["routers"]["r2"]["links"]["s1"]["interface"], VLAN_1
    )

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        result = verify_igmp_groups(
            tgen, dut, intf, IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3
        )
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("R1 is DR, R2 has 226.x.x.x and 227.1.1.1 (*,G) mroute with SC flag")
    step("(S,G) mroute for 226.1.1.1 group present on R2")

    source_i2 = topo["routers"]["i2"]["links"]["r5"]["ipv4"].split("/")[0]
    input_dict_r2 = [
        {
            "dut": "r2",
            "src_address": "*",
            "iif": topo["routers"]["r2"]["links"]["r4"]["interface"],
            "oil": "{}.{}".format(
                topo["routers"]["r2"]["links"]["s1"]["interface"], VLAN_1
            ),
        }
    ]

    for data in input_dict_r2:
        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3,
            data["iif"],
            data["oil"],
        )
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    for dut, flag in zip(["r2"], ["SC"]):
        step("{} has (*,G) flag as {}".format(dut, flag))
        result = verify_multicast_flag_state(tgen, dut, "*", IGMP_JOIN_RANGE_1, flag)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Delete local join from DR node")
    for _join in IGMP_JOIN_RANGE_3:
        input_dict = {
            "r1": {
                "igmp": {
                    "interfaces": {
                        vlan_intf_r1_s1: {
                            "igmp": {
                                "join": [_join],
                                "delete_attr": True,
                            }
                        }
                    }
                }
            }
        }

        result = create_igmp_config(tgen, topo, input_dict)
        assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

        step(
            "After removing local join 227.1.1.1 group removed from IGMP join "
            "of R1, R2 node , using 'show ip igmp groups json'"
        )

        for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
            result = verify_igmp_groups(
                tgen, dut, intf, IGMP_JOIN_RANGE_3, expected=False
            )
            assert result is not True, (
                "Testcase {} : Failed \n "
                "IGMP groups are still present \n Error: {}".format(tc_name, result)
            )

    step("(*,G) mroute for 227.1.1.1 group removed from R1 node")
    step(
        "After remove of local join from R1 and R2 node verify (*,G) and (S,G) "
        "mroutes should not present on R1, R2 and R3 nodes"
    )

    for data in input_dict_r2:
        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_1,
            data["iif"],
            data["oil"],
        )
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_3,
            data["iif"],
            data["oil"],
            expected=False,
        )
        assert (
            result is not True
        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
            tc_name, result
        )

    step("Configure local join on R2 for group range (227.1.1.1)")

    input_dict = {
        "r2": {
            "igmp": {
                "interfaces": {
                    intf_r2_s1: {"igmp": {"version": "2", "join": IGMP_JOIN_RANGE_3}}
                }
            }
        }
    }

    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step(
        "After configuring local join on R2 non DR node, IGMP groups for 26.x.x.x and "
        "227.1.1.1 present on all the nodes"
    )

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        result = verify_igmp_groups(
            tgen, dut, intf, IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3
        )
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("R2 has 227.1.1.1 (*,G) mroute with SC flag")

    for dut, flag in zip(["r2"], ["SC"]):
        step("{} has (*,G) flag as {}".format(dut, flag))
        result = verify_multicast_flag_state(tgen, dut, "*", IGMP_JOIN_RANGE_3, flag)
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("Configure local join on R1 for group range (227.1.1.1)")

    input_dict = {
        "r1": {
            "igmp": {
                "interfaces": {
                    vlan_intf_r1_s1: {
                        "igmp": {"version": "2", "join": IGMP_JOIN_RANGE_3}
                    }
                }
            }
        }
    }

    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step(
        "After configuring 227.1.1.1 on R1 node, verify no change on IGMP groups on all the nodes"
    )

    for dut, intf in zip(["r1", "r2"], [intf_r1_s1, intf_r2_s1]):
        result = verify_igmp_groups(
            tgen, dut, intf, IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3
        )
        assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("R2 has 227.1.1.1 (*,G) mroute with SC flag")

    step("r2 has (*,G) flag as SC")
    result = verify_multicast_flag_state(tgen, "r2", "*", IGMP_JOIN_RANGE_3, "SC")
    assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)

    step("R1 should not have (*,G) join and (S,G) join present")

    input_dict_r1 = [
        {
            "dut": "r1",
            "src_address": "*",
            "iif": topo["routers"]["r1"]["links"]["r4"]["interface"],
            "oil": "{}.{}".format(
                topo["routers"]["r1"]["links"]["s1"]["interface"], VLAN_1
            ),
        },
        {
            "dut": "r1",
            "src_address": source_i2,
            "iif": topo["routers"]["r1"]["links"]["r4"]["interface"],
            "oil": "{}.{}".format(
                topo["routers"]["r1"]["links"]["s1"]["interface"], VLAN_1
            ),
        },
    ]

    for data in input_dict_r1:
        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3,
            data["iif"],
            data["oil"],
            expected=False,
        )
        assert (
            result is not True
        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
            tc_name, result
        )

    step("Remove local join from DR and Non DR node")

    input_dict = {
        "r1": {
            "igmp": {
                "interfaces": {
                    vlan_intf_r1_s1: {
                        "igmp": {
                            "version": "2",
                            "join": IGMP_JOIN_RANGE_3,
                            "delete_attr": True,
                        }
                    }
                }
            }
        },
        "r2": {
            "igmp": {
                "interfaces": {
                    intf_r2_s1: {
                        "igmp": {
                            "version": "2",
                            "join": IGMP_JOIN_RANGE_3,
                            "delete_attr": True,
                        }
                    }
                }
            }
        },
    }

    result = create_igmp_config(tgen, topo, input_dict)
    assert result is True, "Testcase {}: Failed Error: {}".format(tc_name, result)

    step(
        "After remove of local join from R1 and R2 node verify (*,G) and (S,G) mroutes "
        "should not present on R1, R2 nodes"
    )

    for data in input_dict_r1:
        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3,
            data["iif"],
            data["oil"],
            expected=False,
        )
        assert (
            result is not True
        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
            tc_name, result
        )

    for data in input_dict_r2:
        result = verify_mroutes(
            tgen,
            data["dut"],
            data["src_address"],
            IGMP_JOIN_RANGE_1 + IGMP_JOIN_RANGE_3,
            data["iif"],
            data["oil"],
            expected=False,
        )
        assert (
            result is not True
        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
            tc_name, result
        )

    write_test_footer(tc_name)


if __name__ == "__main__":
    args = ["-s"] + sys.argv[1:]
    sys.exit(pytest.main(args))
