chore: onboard to librarian

.github/workflows/presubmit.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
-          python-version: 3.13
+          python-version: 3.14
       - name: Install nox
         run: python -m pip install nox
       - name: Check formatting

.librarian/generator-input/.repo-metadata.json

@@ -0,0 +1,18 @@
+{
+    "name": "spanner",
+    "name_pretty": "Cloud Spanner",
+    "product_documentation": "https://cloud.google.com/spanner/docs/",
+    "client_documentation": "https://cloud.google.com/python/docs/reference/spanner/latest",
+    "issue_tracker": "https://issuetracker.google.com/issues?q=componentid:190851%2B%20status:open",
+    "release_level": "stable",
+    "language": "python",
+    "library_type": "GAPIC_COMBO",
+    "repo": "googleapis/python-spanner",
+    "distribution_name": "google-cloud-spanner",
+    "api_id": "spanner.googleapis.com",
+    "requires_billing": true,
+    "default_version": "v1",
+    "codeowner_team": "@googleapis/spanner-client-libraries-python",
+    "api_shortname": "spanner",
+    "api_description": "is a fully managed, mission-critical, \nrelational database service that offers transactional consistency at global scale, \nschemas, SQL (ANSI 2011 with extensions), and automatic, synchronous replication \nfor high availability.\n\nBe sure to activate the Cloud Spanner API on the Developer's Console to\nuse Cloud Spanner from your project."
+}

owlbot.py → .librarian/generator-input/librarian.py

@@ -25,58 +25,9 @@
 
 common = gcp.CommonTemplates()
 
-
-def get_staging_dirs(
-    # This is a customized version of the s.get_staging_dirs() function
-    # from synthtool to # cater for copying 3 different folders from
-    # googleapis-gen:
-    # spanner, spanner/admin/instance and spanner/admin/database.
-    # Source:
-    # https://github.com/googleapis/synthtool/blob/master/synthtool/transforms.py#L280
-    default_version: Optional[str] = None,
-    sub_directory: Optional[str] = None,
-) -> List[Path]:
-    """Returns the list of directories, one per version, copied from
-    https://github.com/googleapis/googleapis-gen. Will return in lexical sorting
-    order with the exception of the default_version which will be last (if specified).
-
-    Args:
-      default_version (str): the default version of the API. The directory for this version
-        will be the last item in the returned list if specified.
-      sub_directory (str): if a `sub_directory` is provided, only the directories within the
-        specified `sub_directory` will be returned.
-
-    Returns: the empty list if no file were copied.
-    """
-
-    staging = Path("owl-bot-staging")
-
-    if sub_directory:
-        staging /= sub_directory
-
-    if staging.is_dir():
-        # Collect the subdirectories of the staging directory.
-        versions = [v.name for v in staging.iterdir() if v.is_dir()]
-        # Reorder the versions so the default version always comes last.
-        versions = [v for v in versions if v != default_version]
-        versions.sort()
-        if default_version is not None:
-            versions += [default_version]
-        dirs = [staging / v for v in versions]
-        for dir in dirs:
-            s._tracked_paths.add(dir)
-        return dirs
-    else:
-        return []
-
-
-spanner_default_version = "v1"
-spanner_admin_instance_default_version = "v1"
-spanner_admin_database_default_version = "v1"
-
 clean_up_generated_samples = True
 
-for library in get_staging_dirs(spanner_default_version, "spanner"):
+for library in s.get_staging_dirs("v1"):
     if clean_up_generated_samples:
         shutil.rmtree("samples/generated_samples", ignore_errors=True)
         clean_up_generated_samples = False
@@ -202,22 +153,6 @@ def get_staging_dirs(
     if count < 1:
         raise Exception("Expected replacements for gRPC channel options not made.")
 
-    s.move(
-        library,
-        excludes=[
-            "google/cloud/spanner/**",
-            "*.*",
-            "noxfile.py",
-            "docs/index.rst",
-            "google/cloud/spanner_v1/__init__.py",
-            "**/gapic_version.py",
-            "testing/constraints-3.7.txt",
-        ],
-    )
-
-for library in get_staging_dirs(
-    spanner_admin_instance_default_version, "spanner_admin_instance"
-):
     count = s.replace(
         [
             library / "google/cloud/spanner_admin_instance_v1/services/*/transports/grpc*",
@@ -233,14 +168,7 @@ def get_staging_dirs(
     )
     if count < 1:
         raise Exception("Expected replacements for gRPC channel options not made.")
-    s.move(
-        library,
-        excludes=["google/cloud/spanner_admin_instance/**", "*.*", "docs/index.rst", "noxfile.py", "**/gapic_version.py", "testing/constraints-3.7.txt",],
-    )
 
-for library in get_staging_dirs(
-    spanner_admin_database_default_version, "spanner_admin_database"
-):
     count = s.replace(
         [
             library / "google/cloud/spanner_admin_database_v1/services/*/transports/grpc*",
@@ -258,7 +186,16 @@ def get_staging_dirs(
         raise Exception("Expected replacements for gRPC channel options not made.")
     s.move(
         library,
-        excludes=["google/cloud/spanner_admin_database/**", "*.*", "docs/index.rst", "noxfile.py", "**/gapic_version.py", "testing/constraints-3.7.txt",],
+        excludes=[
+            "google/cloud/spanner/**",
+            "*.*",
+            "noxfile.py",
+            "docs/index.rst",
+            "google/cloud/spanner_v1/__init__.py",
+            "testing/constraints-3.7.txt",
+            "google/cloud/spanner_admin_instance/**",
+            "google/cloud/spanner_admin_database/**"
+        ],
     )
 
 s.remove_staging_dirs()
@@ -278,27 +215,12 @@ def get_staging_dirs(
     templated_files,
     excludes=[
         ".coveragerc",
-        ".github/workflows",  # exclude gh actions as credentials are needed for tests
+        ".github/**",
+        ".kokoro/**",
         "README.rst",
-        ".github/release-please.yml",
-        ".kokoro/test-samples-impl.sh",
-        ".kokoro/presubmit/presubmit.cfg",
-        ".kokoro/samples/python3.7/**",
-        ".kokoro/samples/python3.8/**",
     ],
 )
 
-# Ensure CI runs on a new instance each time
-s.replace(
-    ".kokoro/build.sh",
-    "# Setup project id.",
-    """\
-# Set up creating a new instance for each system test run
-export GOOGLE_CLOUD_TESTS_CREATE_SPANNER_INSTANCE=true
-
-# Setup project id.""",
-)
-
 # Update samples folder in CONTRIBUTING.rst
 s.replace("CONTRIBUTING.rst", "samples/snippets", "samples/samples")
 
@@ -321,4 +243,4 @@ def get_staging_dirs(
 
 # Use a python runtime which is available in the owlbot post processor here
 # https://github.com/googleapis/synthtool/blob/master/docker/owlbot/python/Dockerfile
-s.shell.run(["nox", "-s", "blacken-3.10"], hide_output=False)
+s.shell.run(["nox", "-s", "blacken-3.14"], hide_output=False)