Add integration tests for container image

.containerignore

@@ -0,0 +1,3 @@
+.tox
+.coverage
+.pytest_cache

.github/dependabot.yml

@@ -0,0 +1,10 @@
+# Set update schedule for GitHub Actions
+
+version: 2
+updates:
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      # Check for updates to GitHub Actions every week
+      interval: "weekly"

.github/workflows/build-image.yaml

@@ -0,0 +1,83 @@
+name: Build container image
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          sudo apt -y install podman
+          pip install tox
+
+      - name: Build image for testing
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Containerfile
+          tags: esi-leap-testing-${{ github.run_id }}
+
+      - name: Run integration tests
+        env:
+          ESI_LEAP_IMAGE: esi-leap-testing-${{ github.run_id }}
+        run: |
+          tox -e integration
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern=v{{version}}
+            type=semver,pattern=v{{major}}.{{minor}}
+            type=semver,pattern=v{{major}}
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' && github.ref_name == 'master' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          file: Containerfile

.github/workflows/unit-tests.yaml

@@ -5,15 +5,15 @@ on: [push, pull_request]
 jobs:
   run-unit-tests:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies

esi_leap/integration_tests/test_container_image.py

@@ -0,0 +1,247 @@
+"""These tests bring up an esi-container and then run tests against the esi-leap API.
+
+Note that the fixtures in this file are session-scoped (rather than
+the default method-scoped) in avoid the cost of repeatedly
+creating/deleting the container environment. This means that any tests
+in this file must be avoid side effects that would impact subsequent
+tests.
+"""
+
+import os
+import subprocess
+import requests
+import pytest
+import string
+import random
+import tempfile
+import time
+import docker
+
+from pathlib import Path
+
+esi_leap_config_template = """
+[DEFAULT]
+
+log_dir=
+log_file=
+transport_url=fake://
+
+[database]
+connection=mysql+pymysql://esi_leap:{mysql_user_password}@{mysql_container}/esi_leap
+
+[oslo_messaging_notifications]
+driver=messagingv2
+transport_url=fake://
+
+[oslo_concurrency]
+lock_path={tmp_path}/locks
+
+[dummy_node]
+dummy_node_dir={tmp_path}/nodes
+
+[pecan]
+auth_enable=false
+"""
+
+
+@pytest.fixture(scope="session")
+def docker_client():
+    """A client for interacting with the Docker API"""
+    client = docker.from_env()
+    return client
+
+
+@pytest.fixture(scope="session")
+def tmp_path():
+    """A session-scoped temporary directory that will be removed when the
+    session closes."""
+
+    with tempfile.TemporaryDirectory(prefix="pytest") as tmpdir:
+        yield Path(tmpdir)
+
+
+@pytest.fixture(scope="session")
+def random_string():
+    """A session-scoped random string that we use to generate names,
+    credentials, etc. that are unique to the test session."""
+
+    return "".join(random.sample(string.ascii_lowercase, 8))
+
+
+@pytest.fixture(scope="session")
+def test_network(docker_client, random_string):
+    """Create a Docker network for the test (and clean it up when we're done)"""
+
+    network_name = f"esi-leap-{random_string}"
+    network = docker_client.networks.create(network_name)
+    yield network_name
+    network.remove()
+
+
+@pytest.fixture(scope="session")
+def mysql_user_password(random_string):
+    """A random password for authenticating to the mysql service"""
+    return f"user-{random_string}"
+
+
+@pytest.fixture(scope="session")
+def esi_leap_port():
+    """The esi-leap service will be published on this host port."""
+    return random.randint(10000, 30000)
+
+
+@pytest.fixture(scope="session")
+def mysql_container(docker_client, test_network, mysql_user_password, random_string):
+    """Run a mysql container and wait until it is healthy. The fixture value
+    is the container name."""
+
+    container_name = f"mysql-{random_string}"
+    root_password = f"root-{random_string}"
+    env = {
+        "MYSQL_ROOT_PASSWORD": root_password,
+        "MYSQL_DATABASE": "esi_leap",
+        "MYSQL_USER": "esi_leap",
+        "MYSQL_PASSWORD": mysql_user_password,
+    }
+
+    # We use the healthcheck so that we can wait until mysql is ready
+    # before bringing up the esi-leap container.
+    healthcheck = {
+        "test": [
+            "CMD",
+            "mysqladmin",
+            "ping",
+            f"-p{root_password}",
+        ],
+        "start_period": int(30e9),
+        "interval": int(5e9),
+    }
+
+    container = docker_client.containers.run(
+        "docker.io/mysql:8",
+        detach=True,
+        network=test_network,
+        name=container_name,
+        environment=env,
+        healthcheck=healthcheck,
+        init=True,
+        labels={"pytest": None, "esi-leap-test": random_string},
+    )
+
+    for _ in range(30):
+        container.reload()
+
+        if container.health == "healthy":
+            break
+
+        time.sleep(1)
+    else:
+        raise OSError("failed to start mysql container")
+
+    yield container_name
+
+    container.remove(force=True)
+
+
+@pytest.fixture(scope="session")
+def esi_leap_image(random_string):
+    """This will either build a new esi-leap image and return the name, or, if the
+    ESI_LEAP_IMAGE environment variable is set, simply return the value of that
+    variable."""
+
+    # Note that the := operator requires python >= 3.8
+    if image_name := os.getenv("ESI_LEAP_IMAGE"):
+        return image_name
+
+    image_name = f"esi-leap-{random_string}"
+    subprocess.run(
+        ["docker", "build", "-t", image_name, "-f", "Containerfile", "."], check=True
+    )
+    return image_name
+
+
+@pytest.fixture(scope="session")
+def esi_leap_container(
+    docker_client,
+    test_network,
+    mysql_container,
+    mysql_user_password,
+    tmp_path,
+    random_string,
+    esi_leap_port,
+    esi_leap_image,
+):
+    """Run the esi-leap container. Create an esi-leap configuration file from
+    the template and mount it at /etc/esi-leap/esi-leap.conf in the
+    container.
+
+    The service is exposed on esi_leap_port so that we can access it from our
+    tests."""
+
+    container_name = f"esi-leap-api-{random_string}"
+    config_file = tmp_path / "esi-leap.conf"
+    with config_file.open("w") as fd:
+        fd.write(
+            esi_leap_config_template.format(
+                **{
+                    "tmp_path": tmp_path,
+                    "mysql_container": mysql_container,
+                    "mysql_user_password": mysql_user_password,
+                }
+            )
+        )
+
+    (tmp_path / "nodes").mkdir()
+    (tmp_path / "locks").mkdir()
+
+    container = docker_client.containers.run(
+        esi_leap_image,
+        detach=True,
+        network=test_network,
+        name=container_name,
+        init=True,
+        labels={"pytest": None, "esi-leap-test": random_string},
+        ports={"7777/tcp": esi_leap_port},
+        volumes=[f"{tmp_path}/esi-leap.conf:/etc/esi-leap/esi-leap.conf"],
+    )
+
+    for _ in range(30):
+        try:
+            res = requests.get(f"http://localhost:{esi_leap_port}/v1/offers")
+            if res.status_code == 200:
+                break
+        except requests.RequestException:
+            pass
+
+        time.sleep(1)
+    else:
+        raise OSError("failed to start esi-leap container")
+
+    yield container_name
+
+    container.remove(force=True)
+
+
+def test_api_list_offers(esi_leap_container, esi_leap_port):
+    res = requests.get(f"http://localhost:{esi_leap_port}/v1/offers")
+    assert res.status_code == 200
+    assert res.json() == {"offers": []}
+
+
+def test_api_list_leases(esi_leap_container, esi_leap_port):
+    res = requests.get(f"http://localhost:{esi_leap_port}/v1/leases")
+    assert res.status_code == 200
+    assert res.json() == {"leases": []}
+
+
+def test_api_list_events(esi_leap_container, esi_leap_port):
+    res = requests.get(f"http://localhost:{esi_leap_port}/v1/events")
+    assert res.status_code == 200
+    assert res.json() == {"events": []}
+
+
+@pytest.mark.xfail(reason="nodes endpoint requires keystone")
+def test_api_list_nodes(esi_leap_container, esi_leap_port):
+    res = requests.get(f"http://localhost:{esi_leap_port}/v1/nodes")
+    assert res.status_code == 200
+    assert res.json() == {"nodes": []}

test-requirements.txt

@@ -21,3 +21,5 @@ WebTest>=2.0.27 # MIT
 bashate>=0.5.1 # Apache-2.0
 flake8-import-order>=0.13 # LGPLv3
 Pygments>=2.2.0 # BSD
+docker>=7.1.0
+requests>=2.32.0

tox.ini

@@ -18,6 +18,9 @@ deps =
   -r{toxinidir}/test-requirements.txt
 commands = pytest -v --cov=esi_leap {posargs}
 
+[testenv:integration]
+commands = pytest -v esi_leap/integration_tests
+
 [testenv:pep8]
 commands = flake8 esi_leap {posargs}