chore: adjust repo-metadata generation to fit existing files in HW re…

…pos (#2923)

This PR introduces a couple of new keys in the repo-metadata.json
[model](https://github.com/googleapis/sdk-platform-java/blob/main/library_generation/model/library_config.py).
* `min_java_version`, as seen in
[pubsublite](https://github.com/googleapis/java-pubsublite/blob/11c6540e2dec642492f5bd324ee810ca037d5a86/.repo-metadata.json#L11),
[spanner](https://github.com/googleapis/java-spanner/blob/9deb34846b57e238642b6aa13f3107b2204cf969/.repo-metadata.json#L10)
and others.
* `recommended_package`, as seen in
[spanner](https://github.com/googleapis/java-spanner/blob/9deb34846b57e238642b6aa13f3107b2204cf969/.repo-metadata.json#L20),
[storage](https://github.com/googleapis/java-storage/blob/87bf7371b6c4300b0f306ca36d1918d52adf721b/.repo-metadata.json#L19)
and others.

This constitutes an effort to fit our library generation to the existing
hand-written libraries.

library_generation/generate_composed_library.py

@@ -70,10 +70,10 @@ def generate_composed_library(
         build_file_folder = Path(f"{output_folder}/{gapic.proto_path}").resolve()
         print(f"build_file_folder: {build_file_folder}")
         gapic_inputs = parse_build_file(build_file_folder, gapic.proto_path)
-        # generate prerequisite files (.repo-metadata.json, .OwlBot-hermetic.yaml,
+        # generate postprocessing prerequisite files (.repo-metadata.json, .OwlBot-hermetic.yaml,
         # owlbot.py) here because transport is parsed from BUILD.bazel,
         # which lives in a versioned proto_path.
-        util.generate_prerequisite_files(
+        util.generate_postprocessing_prerequisite_files(
             config=config,
             library=library,
             proto_path=util.remove_version_from(gapic.proto_path),

library_generation/model/generation_config.py

@@ -141,6 +141,8 @@ def from_yaml(path_to_yaml: str) -> GenerationConfig:
             extra_versioned_modules=__optional(
                 library, "extra_versioned_modules", None
             ),
+            recommended_package=__optional(library, "recommended_package", None),
+            min_java_version=__optional(library, "min_java_version", None),
         )
         parsed_libraries.append(new_library)
 

library_generation/model/library_config.py

@@ -48,6 +48,8 @@ def __init__(
         cloud_api: Optional[bool] = True,
         requires_billing: Optional[bool] = True,
         extra_versioned_modules: Optional[str] = None,
+        recommended_package: Optional[str] = None,
+        min_java_version: Optional[int] = None,
     ):
         self.api_shortname = api_shortname
         self.api_description = api_description
@@ -72,6 +74,8 @@ def __init__(
         self.cloud_api = cloud_api
         self.requires_billing = requires_billing
         self.extra_versioned_modules = extra_versioned_modules
+        self.recommended_package = recommended_package
+        self.min_java_version = min_java_version
 
     def get_library_name(self) -> str:
         """
@@ -105,6 +109,8 @@ def __eq__(self, other):
             and self.cloud_api == other.cloud_api
             and self.requires_billing == other.requires_billing
             and self.extra_versioned_modules == other.extra_versioned_modules
+            and self.recommended_package == other.recommended_package
+            and self.min_java_version == other.min_java_version
         )
 
     def __hash__(self):
@@ -134,6 +140,8 @@ def __hash__(self):
                     self.cloud_api,
                     self.requires_billing,
                     self.extra_versioned_modules,
+                    self.recommended_package,
+                    self.min_java_version,
                 ]
                 + [config.proto_path for config in self.gapic_configs]
             ).encode("utf-8")

library_generation/test/resources/goldens/.repo-metadata-monorepo-golden.json

@@ -14,5 +14,7 @@
   "library_type": "GAPIC_AUTO",
   "requires_billing": true,
   "rest_documentation": "https://cloud.google.com/bare-metal/docs/reference/rest",
-  "rpc_documentation": "https://cloud.google.com/bare-metal/docs/reference/rpc"
+  "rpc_documentation": "https://cloud.google.com/bare-metal/docs/reference/rpc",
+  "recommended_package": "com.google.example",
+  "min_java_version": 8
 }

library_generation/test/resources/goldens/.repo-metadata-non-monorepo-golden.json

@@ -15,5 +15,7 @@
   "requires_billing": true,
   "rest_documentation": "https://cloud.google.com/bare-metal/docs/reference/rest",
   "rpc_documentation": "https://cloud.google.com/bare-metal/docs/reference/rpc",
-  "extra_versioned_modules": "test-module"
+  "extra_versioned_modules": "test-module",
+  "recommended_package": "com.google.example",
+  "min_java_version": 8
 }

library_generation/test/resources/goldens/.repo-metadata-proto-only-golden.json

@@ -13,5 +13,7 @@
   "library_type": "OTHER",
   "requires_billing": true,
   "rest_documentation": "https://cloud.google.com/bare-metal/docs/reference/rest",
-  "rpc_documentation": "https://cloud.google.com/bare-metal/docs/reference/rpc"
+  "rpc_documentation": "https://cloud.google.com/bare-metal/docs/reference/rpc",
+  "recommended_package": "com.google.example",
+  "min_java_version": 8
 }

library_generation/test/utilities_unit_tests.py

@@ -40,6 +40,8 @@
     library_name="bare-metal-solution",
     rest_documentation="https://cloud.google.com/bare-metal/docs/reference/rest",
     rpc_documentation="https://cloud.google.com/bare-metal/docs/reference/rpc",
+    recommended_package="com.google.example",
+    min_java_version=8,
 )
 library_2 = LibraryConfig(
     api_shortname="secretmanager",
@@ -167,8 +169,8 @@ def test_eprint_valid_input_succeeds(self):
         # print() appends a `\n` each time it's called
         self.assertEqual(test_input + "\n", result)
 
-    def test_generate_prerequisite_files_non_monorepo_success(self):
-        library_path = self.__setup_prerequisite_files(
+    def test_generate_postprocessing_prerequisite_files_non_monorepo_success(self):
+        library_path = self.__setup_postprocessing_prerequisite_files(
             combination=1, library_type="GAPIC_COMBO"
         )
 
@@ -185,10 +187,12 @@ def test_generate_prerequisite_files_non_monorepo_success(self):
         file_comparator.compare_files(
             f"{library_path}/owlbot.py", f"{library_path}/owlbot-golden.py"
         )
-        self.__remove_prerequisite_files(path=library_path, is_monorepo=False)
+        self.__remove_postprocessing_prerequisite_files(
+            path=library_path, is_monorepo=False
+        )
 
-    def test_generate_prerequisite_files_monorepo_success(self):
-        library_path = self.__setup_prerequisite_files(combination=2)
+    def test_generate_postprocessing_prerequisite_files_monorepo_success(self):
+        library_path = self.__setup_postprocessing_prerequisite_files(combination=2)
 
         file_comparator.compare_files(
             f"{library_path}/.repo-metadata.json",
@@ -201,10 +205,10 @@ def test_generate_prerequisite_files_monorepo_success(self):
         file_comparator.compare_files(
             f"{library_path}/owlbot.py", f"{library_path}/owlbot-golden.py"
         )
-        self.__remove_prerequisite_files(path=library_path)
+        self.__remove_postprocessing_prerequisite_files(path=library_path)
 
-    def test_generate_prerequisite_files_proto_only_repo_success(self):
-        library_path = self.__setup_prerequisite_files(
+    def test_generate_postprocessing_prerequisite_files_proto_only_repo_success(self):
+        library_path = self.__setup_postprocessing_prerequisite_files(
             combination=3, library_type="OTHER"
         )
 
@@ -219,7 +223,7 @@ def test_generate_prerequisite_files_proto_only_repo_success(self):
         file_comparator.compare_files(
             f"{library_path}/owlbot.py", f"{library_path}/owlbot-golden.py"
         )
-        self.__remove_prerequisite_files(path=library_path)
+        self.__remove_postprocessing_prerequisite_files(path=library_path)
 
     def test_prepare_repo_monorepo_success(self):
         gen_config = self.__get_a_gen_config(2)
@@ -256,7 +260,7 @@ def test_prepare_repo_split_repo_success(self):
         self.assertEqual(["misc"], library_path)
         shutil.rmtree(repo_config.output_folder)
 
-    def __setup_prerequisite_files(
+    def __setup_postprocessing_prerequisite_files(
         self,
         combination: int,
         library_type: str = "GAPIC_AUTO",
@@ -273,7 +277,7 @@ def __setup_prerequisite_files(
         config = self.__get_a_gen_config(combination, library_type=library_type)
         proto_path = "google/cloud/baremetalsolution/v2"
         transport = "grpc"
-        util.generate_prerequisite_files(
+        util.generate_postprocessing_prerequisite_files(
             config=config,
             library=library,
             proto_path=proto_path,
@@ -319,7 +323,9 @@ def __get_a_gen_config(
         )
 
     @staticmethod
-    def __remove_prerequisite_files(path: str, is_monorepo: bool = True) -> None:
+    def __remove_postprocessing_prerequisite_files(
+        path: str, is_monorepo: bool = True
+    ) -> None:
         os.remove(f"{path}/.repo-metadata.json")
         os.remove(f"{path}/owlbot.py")
         if is_monorepo:

library_generation/utils/utilities.py

@@ -183,7 +183,7 @@ def pull_api_definition(
         )
 
 
-def generate_prerequisite_files(
+def generate_postprocessing_prerequisite_files(
     config: GenerationConfig,
     library: LibraryConfig,
     proto_path: str,
@@ -192,14 +192,13 @@ def generate_prerequisite_files(
     language: str = "java",
 ) -> None:
     """
-    Generate prerequisite files for a library.
-
-    Note that the version, if any, in the proto_path will be removed.
+    Generates the postprocessing prerequisite files for a library.
 
     :param config: a GenerationConfig object representing a parsed configuration
     yaml
     :param library: the library configuration
-    :param proto_path: the proto path
+    :param proto_path: the path from the root of googleapis to the location of the service
+    protos. If the path contains a version, it will be removed
     :param transport: transport supported by the library
     :param library_path: the path to which the generated file goes
     :param language: programming language of the library
@@ -275,6 +274,10 @@ def generate_prerequisite_files(
         repo_metadata["rpc_documentation"] = library.rpc_documentation
     if library.extra_versioned_modules:
         repo_metadata["extra_versioned_modules"] = library.extra_versioned_modules
+    if library.recommended_package:
+        repo_metadata["recommended_package"] = library.recommended_package
+    if library.min_java_version:
+        repo_metadata["min_java_version"] = library.min_java_version
 
     # generate .repo-meta.json
     json_file = ".repo-metadata.json"