test host_manager is running in the container

emulation-system/tests/test_start_host_manager.py

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+import pytest
+import docker
+import logging
+import grpc
+from unittest.mock import MagicMock
+from docker.types import IPAMConfig, IPAMPool
+import time
+from csle_common.dao.emulation_config.emulation_env_config import EmulationEnvConfig
+from csle_common.util.emulation_util import EmulationUtil
+import csle_common.constants.constants as constants
+from csle_common.controllers.host_controller import HostController
+import csle_collector.host_manager.host_manager_pb2_grpc
+import csle_collector.host_manager.host_manager_pb2
+from IPython.lib.editorhooks import emacs
+
+
+@pytest.fixture(scope="module")
+def docker_client() -> None:
+    """
+    Initialize and Provide a Docker client instance for the test
+
+    :return: None
+    """
+    return docker.from_env()
+
+
+@pytest.fixture(scope="module")
+def network(docker_client) -> None:
+    """
+    Create a custom network with a specific subnet
+
+    :param docker_client: docker_client
+    :yield: network
+
+    :return: None
+    """
+    ipam_pool = IPAMPool(subnet="15.15.15.0/24")
+    ipam_config = IPAMConfig(pool_configs=[ipam_pool])
+    network = docker_client.networks.create("test_network", driver="bridge", ipam=ipam_config)
+    yield network
+    network.remove()
+
+
+def get_derived_containers(docker_client, excluded_tag="blank") -> None:
+    """
+    Get all the containers except the blank ones
+
+    :param docker_client: docker_client
+
+    :return: None
+    """
+    # Get all images except those with the excluded tag
+    match_tag = "0.6.0"
+    all_images = docker_client.images.list()
+    derived_images = [
+        image
+        for image in all_images
+        if any(match_tag in tag for tag in image.tags)
+        and all("base" not in tag for tag in image.tags)
+        and all(excluded_tag not in tag for tag in image.tags)
+    ]
+    return derived_images
+
+
+@pytest.fixture(scope="module", params=get_derived_containers(docker.from_env()))
+def container_setup(request, docker_client, network) -> None:
+    """
+    Starts a Docker container before running tests and ensures its stopped and removed after tests complete.
+
+    :param request: request
+    :param docker_client: docker_client
+    :yield: container
+
+    :return: None
+    """
+    # Create and start each derived container
+    image = request.param
+    container = docker_client.containers.create(
+        image.tags[0],  # Use the first tag for the image
+        command="sh -c 'while true; do sleep 3600; done'",
+        detach=True,
+    )
+    network.connect(container)
+    container.start()
+    yield container
+    container.stop()
+    container.remove()
+
+
+def test_start_host_manager(container_setup) -> None:
+    """
+    Start host_manager in a container
+
+    :param container_setup: container_setup
+
+    :return: None
+    """
+    failed_containers = []
+    containers_info = []
+    container_setup.reload()
+    assert container_setup.status == "running"
+    # Mock emulation_env_config
+    emulation_env_config = MagicMock(spec=EmulationEnvConfig)
+    emulation_env_config.get_connection.return_value = MagicMock()
+    emulation_env_config.host_manager_config = MagicMock()
+    emulation_env_config.host_manager_config.host_manager_port = 8080
+    emulation_env_config.host_manager_config.host_manager_log_dir = "/var/log/host_manager"
+    emulation_env_config.host_manager_config.host_manager_log_file = "host_manager.log"
+    emulation_env_config.host_manager_config.host_manager_max_workers = 4
+
+    ip = container_setup.attrs["NetworkSettings"]["IPAddress"]
+    port = emulation_env_config.host_manager_config.host_manager_port
+    try:
+        # Start host_manager command
+        cmd = (
+            f"/root/miniconda3/bin/python3 /host_manager.py "
+            f"--port {emulation_env_config.host_manager_config.host_manager_port} "
+            f"--logdir {emulation_env_config.host_manager_config.host_manager_log_dir} "
+            f"--logfile {emulation_env_config.host_manager_config.host_manager_log_file} "
+            f"--maxworkers {emulation_env_config.host_manager_config.host_manager_max_workers}"
+        )
+        # Run cmd in the container
+        result = container_setup.exec_run(cmd, detach=True)
+        # Check if host_manager starts
+        cmd = (
+            f"sh -c '{constants.COMMANDS.PS_AUX} | {constants.COMMANDS.GREP} "
+            f"{constants.COMMANDS.SPACE_DELIM}{constants.TRAFFIC_COMMANDS.HOST_MANAGER_FILE_NAME}'"
+        )
+        result = container_setup.exec_run(cmd)
+        output = result.output.decode("utf-8")
+        assert constants.COMMANDS.SEARCH_HOST_MANAGER in output, "Host manager is not running in the container"
+        time.sleep(5)
+        # Call grpc
+        with grpc.insecure_channel(f"{ip}:{port}", options=constants.GRPC_SERVERS.GRPC_OPTIONS) as channel:
+            stub = csle_collector.host_manager.host_manager_pb2_grpc.HostManagerStub(channel)
+            status = csle_collector.host_manager.query_host_manager.get_host_status(stub=stub)
+        assert status
+    except Exception as e:
+        print(f"Error occurred in container {container_setup.name}: {e}")
+        failed_containers.append(container_setup.name)
+        containers_info.append(
+            {
+                "container_status": container_setup.status,
+                "container_image": container_setup.image.tags,
+                "name": container_setup.name,
+                "error": str(e),
+            }
+        )
+    if failed_containers:
+        print("Containers that failed to start the host manager:")
+        print(containers_info)
+    assert not failed_containers, f"T{failed_containers} failed"