Add butler server docker smoke test

.github/workflows/docker.yaml

@@ -47,11 +47,29 @@ jobs:
           # figure out version number
           fetch-depth: 0
 
-
-      - uses: lsst-sqre/build-and-push-to-ghcr@v1
+      - uses: lsst-sqre/build-and-push-to-ghcr@tickets/DM-41568
         id: build
         with:
           image: ${{ github.repository }}
           github_token: ${{ secrets.GITHUB_TOKEN }}
 
-      - run: echo Pushed ghcr.io/${{ github.repository }}:${{ steps.build.outputs.tag }}
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade setuptools wheel build
+          pip install -r requirements.txt
+          pip install testcontainers
+
+      - name: Install Butler client
+        run: |
+          pip install -v --no-deps -e .
+
+      - name: Run smoke test
+        run: |
+          export BUTLER_SERVER_DOCKER_IMAGE=${{ steps.build.outputs.fully_qualified_image_digest }}
+          python tests_integration/test_docker_container.py

pyproject.toml

@@ -132,6 +132,9 @@ write_to = "python/lsst/daf/butler/version.py"
 # The matplotlib test may not release font files.
 # Some unit tests open registry database in setUpClass.
 open_files_ignore = ["*.ttf", "gen3.sqlite3"]
+# These require additional environment setup that isn't available during
+# normal unit test runs
+addopts = "--ignore=tests_integration"
 
 [tool.pydocstyle]
 convention = "numpy"

tests_integration/test_docker_container.py

@@ -0,0 +1,67 @@
+import contextlib
+import os
+import tempfile
+import unittest
+
+from lsst.daf.butler import Butler
+from lsst.daf.butler.tests.utils import MetricTestRepo
+from testcontainers.core.container import DockerContainer
+
+TESTDIR = os.path.abspath(os.path.dirname(__file__))
+
+
+@contextlib.contextmanager
+def _run_server_docker():
+    with tempfile.TemporaryDirectory() as temp_dir:
+        # Ensure the repository directory will be readable inside the container
+        os.chmod(temp_dir, 0o755)
+
+        MetricTestRepo(
+            root=temp_dir, configFile=os.path.join(TESTDIR, "../tests", "config/basic/butler.yaml")
+        )
+
+        port = 8080
+        butler_root = "/butler_root"
+        docker_image = os.getenv("BUTLER_SERVER_DOCKER_IMAGE")
+        if not docker_image:
+            raise Exception("BUTLER_SERVER_DOCKER_IMAGE must be set")
+        container = (
+            DockerContainer(docker_image)
+            .with_exposed_ports(port)
+            .with_env("BUTLER_SERVER_CONFIG_URI", butler_root)
+            .with_volume_mapping(temp_dir, butler_root, "rw")
+        )
+
+        with container:
+            server_host = container.get_container_host_ip()
+            server_port = container.get_exposed_port(port)
+            server_url = f"http://{server_host}:{server_port}/api/butler"
+            try:
+                yield server_url
+            finally:
+                (stdout, stderr) = container.get_logs()
+                if stdout:
+                    print("STDOUT:")
+                    print(stdout.decode())
+                if stderr:
+                    print("STDERR:")
+                    print(stderr.decode())
+
+
+class ButlerDockerTestCase(unittest.TestCase):
+    """Simple smoke test to ensure the server can start up and respond to
+    requests
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        cls.server_uri = cls.enterClassContext(_run_server_docker())
+
+    def test_get_dataset_type(self):
+        butler = Butler(self.server_uri)
+        dataset_type = butler.get_dataset_type("test_metric_comp")
+        self.assertEqual(dataset_type.name, "test_metric_comp")
+
+
+if __name__ == "__main__":
+    unittest.main()