Build scope targets corresponding to each module sdk. am: 571ce869cc

Original change: https://android-review.googlesource.com/c/platform/packages/modules/common/+/2102113

Change-Id: Idf0b1d19ee1b9a3e99f11b6073464979ff9fb8ca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

build/mainline_modules_sdks.py

@@ -21,6 +21,7 @@ the APEXes in it are built, otherwise all configured SDKs are built.
 import argparse
 import dataclasses
 import io
+import json
 import os
 import re
 import shutil
@@ -221,6 +222,11 @@ def sdk_snapshot_zip_file(snapshots_dir, sdk_name, sdk_version):
     return os.path.join(snapshots_dir, f"{sdk_name}-{sdk_version}.zip")
 
 
+def sdk_snapshot_info_file(snapshots_dir, sdk_name, sdk_version):
+    """Get the path to the sdk snapshot info file."""
+    return os.path.join(snapshots_dir, f"{sdk_name}-{sdk_version}.info")
+
+
 @dataclasses.dataclass()
 class SnapshotBuilder:
     """Builds sdk snapshots"""
@@ -381,6 +387,48 @@ java_sdk_library_import {{
 
         return r_snapshot_dir
 
+    @staticmethod
+    def does_sdk_library_support_latest_api(sdk_library):
+        # TODO(b/235330409): remove service art from the exception list once
+        # this bug is fixed.
+        if sdk_library == "service-art" or \
+            sdk_library == "conscrypt.module.platform.api":
+            return False
+        return True
+
+    def latest_api_file_targets(self, sdk_info_file):
+        # Read the sdk info file and fetch the latest scope targets.
+        with open(sdk_info_file, "r") as sdk_info_file_object:
+            sdk_info_file_json = json.loads(sdk_info_file_object.read())
+
+        target_paths = []
+        for jsonItem in sdk_info_file_json:
+            if not jsonItem["@type"] == "java_sdk_library":
+                continue
+
+            if not self.does_sdk_library_support_latest_api(jsonItem["@name"]):
+                continue
+
+            for scope in jsonItem["scopes"]:
+                target_paths.append(jsonItem["scopes"][scope]["latest_api"])
+                target_paths.append(
+                    jsonItem["scopes"][scope]["latest_removed_api"])
+        return target_paths
+
+    def build_sdk_scope_targets(self, build_release, sdk_version, modules):
+        # Build the latest scope targets for each module sdk
+        # Compute the paths to all the latest scope targets for each module sdk.
+        target_paths = []
+        for module in modules:
+            for sdk in module.sdks:
+                if "host-exports" in sdk or "test-exports" in sdk:
+                    continue
+
+                sdk_info_file = sdk_snapshot_info_file(self.mainline_sdks_dir,
+                                                       sdk, sdk_version)
+                target_paths.extend(self.latest_api_file_targets(sdk_info_file))
+        self.build_target_paths(build_release, sdk_version, target_paths)
+
 
 # A list of the sdk versions to build. Usually just current but can include a
 # numeric version too.
@@ -856,6 +904,9 @@ class SdkDistProducer:
         sdk_versions = build_release.sdk_versions
         snapshots_dir = self.snapshot_builder.build_snapshots(
             build_release, sdk_versions, modules)
+        if build_release.name == LATEST:
+            self.snapshot_builder.build_sdk_scope_targets(
+                build_release, sdk_versions[0], modules)
         self.populate_unbundled_dist(build_release, sdk_versions, modules,
                                      snapshots_dir)
         return snapshots_dir
@@ -875,6 +926,8 @@ class SdkDistProducer:
         for module in modules:
             for sdk_version in sdk_versions:
                 for sdk in module.sdks:
+                    # TODO(b/230609867): create API diff file for each module
+                    # sdk.
                     sdk_dist_dir = os.path.join(build_release_dist_dir,
                                                 sdk_version)
                     self.populate_dist_snapshot(build_release, module, sdk,

build/mainline_modules_sdks_test.py

@@ -74,6 +74,59 @@ class FakeSnapshotBuilder(mm.SnapshotBuilder):
                                               module.for_r_build)
         return sdks_out_dir
 
+    def get_art_module_info_file_data(self):
+        info_file_data = f"""[
+  {{
+    "@type": "java_sdk_library",
+    "@name": "art.module.public.api",
+    "@deps": [
+      "libcore_license"
+    ],
+    "dist_stem": "art",
+    "scopes": {{
+      "public": {{
+        "current_api": "sdk_library/public/art.module.public.api.txt",
+        "latest_api": "{Path(self.mainline_sdks_dir).joinpath("test")}/prebuilts/sdk/art.api.public.latest/gen/art.api.public.latest",
+        "latest_removed_api": "{Path(self.mainline_sdks_dir).joinpath("test")}/prebuilts/sdk/art-removed.api.public.latest/gen/art-removed.api.public.latest",
+        "removed_api": "sdk_library/public/art.module.public.api-removed.txt"
+      }}
+    }}
+  }}
+]
+"""
+        return info_file_data
+
+    @staticmethod
+    def write_data_to_file(file, data):
+        with open(file, "w") as file:
+            file.write(data)
+
+    def create_snapshot_info_file(self, module, sdk_info_file):
+        if module == MAINLINE_MODULES_BY_APEX["com.android.art"]:
+            self.write_data_to_file(sdk_info_file,
+                                    self.get_art_module_info_file_data())
+        else:
+            # For rest of the modules, generate an empty .info file.
+            self.write_data_to_file(sdk_info_file, "[]")
+
+    def build_sdk_scope_targets(self, build_release, sdk_version, modules):
+        target_paths = []
+        for module in modules:
+            for sdk in module.sdks:
+                if "host-exports" in sdk or "test-exports" in sdk:
+                    continue
+
+                sdk_info_file = mm.sdk_snapshot_info_file(
+                    Path(self.mainline_sdks_dir).joinpath("test"), sdk,
+                    sdk_version)
+                self.create_snapshot_info_file(module, sdk_info_file)
+                target_paths.extend(self.latest_api_file_targets(sdk_info_file))
+
+        for target_path in target_paths:
+            os.makedirs(os.path.split(target_path)[0])
+            self.write_data_to_file(target_path, "")
+            # TODO(b/230609867): Add test to verify api diff file generation.
+
 
 class TestProduceDist(unittest.TestCase):