hadoop-ozone/fault-injection-test/network-tests/src/test/blockade/test_blockade_flaky.py

#!/usr/bin/python

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import logging
import random
import pytest

from ozone.blockade import Blockade
from ozone.cluster import OzoneCluster


logger = logging.getLogger(__name__)


def setup_function():
    global cluster
    cluster = OzoneCluster.create()
    cluster.start()


def teardown_function():
    cluster.stop()


@pytest.mark.parametrize("flaky_node", ["datanode"])
def test_flaky(flaky_node):
    """
    In these tests, we make the network of the nodes as flaky using blockade.
    One of the DNs selected randomly and network of the DN is made flaky.

    Once HA is in place, we can go ahead and make OM and SCM network flaky.

    """
    flaky_container_name = {
        "scm": cluster.scm,
        "om": cluster.om,
        "datanode": random.choice(cluster.datanodes),
        "all": "--all"
    }[flaky_node]

    Blockade.make_flaky(flaky_container_name)
    exit_code, output = cluster.get_client().run_freon(1, 1, 1, 10240)
    assert exit_code == 0, "freon run failed with output=[%s]" % output