Perform CheckMinSdkVersion for java_sdk_library.

In a follow up, apex would expect that any module that implements
ModuleWithMinSdkVersionCheck to have performed appropate checks on
min_sdk_version, to allow relaxing some of the existing conditions.

This change moves the responsibility of checking min_sdk_version
of java_sdk_library to java_sdk_library itself.

Bug: 205923322
Test: presubmit
Change-Id: I79b5a1fc34098fff60221e416db6e6e69e01f531

java/sdk_library.go

@@ -1129,6 +1129,20 @@ func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext)
 	return generatedScopes
 }
 
+func (module *SdkLibrary) CheckMinSdkVersion(ctx android.ModuleContext) {
+	android.CheckMinSdkVersion(ctx, module.MinSdkVersion(ctx).ApiLevel, func(c android.ModuleContext, do android.PayloadDepsCallback) {
+		ctx.WalkDeps(func(child android.Module, parent android.Module) bool {
+			isExternal := !module.depIsInSameApex(ctx, child)
+			if am, ok := child.(android.ApexModule); ok {
+				if !do(ctx, parent, am, isExternal) {
+					return false
+				}
+			}
+			return !isExternal
+		})
+	})
+}
+
 type sdkLibraryComponentTag struct {
 	blueprint.BaseDependencyTag
 	name string
@@ -1214,6 +1228,10 @@ func (module *SdkLibrary) OutputFiles(tag string) (android.Paths, error) {
 }
 
 func (module *SdkLibrary) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	if proptools.String(module.deviceProperties.Min_sdk_version) != "" {
+		module.CheckMinSdkVersion(ctx)
+	}
+
 	module.generateCommonBuildActions(ctx)
 
 	// Only build an implementation library if required.
@@ -2605,12 +2623,12 @@ func (module *sdkLibraryXml) GenerateAndroidBuildActions(ctx android.ModuleConte
 
 func (module *sdkLibraryXml) AndroidMkEntries() []android.AndroidMkEntries {
 	if module.hideApexVariantFromMake {
-		return []android.AndroidMkEntries{android.AndroidMkEntries{
+		return []android.AndroidMkEntries{{
 			Disabled: true,
 		}}
 	}
 
-	return []android.AndroidMkEntries{android.AndroidMkEntries{
+	return []android.AndroidMkEntries{{
 		Class:      "ETC",
 		OutputFile: android.OptionalPathForPath(module.outputFilePath),
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{

java/sdk_library_test.go

@@ -1140,3 +1140,87 @@ func TestJavaSdkLibraryDist(t *testing.T) {
 		})
 	}
 }
+
+func TestSdkLibrary_CheckMinSdkVersion(t *testing.T) {
+	preparer := android.GroupFixturePreparers(
+		PrepareForTestWithJavaBuildComponents,
+		PrepareForTestWithJavaDefaultModules,
+		PrepareForTestWithJavaSdkLibraryFiles,
+	)
+
+	preparer.RunTestWithBp(t, `
+		java_sdk_library {
+			name: "sdklib",
+            srcs: ["a.java"],
+            static_libs: ["util"],
+            min_sdk_version: "30",
+			unsafe_ignore_missing_latest_api: true,
+        }
+
+		java_library {
+			name: "util",
+			srcs: ["a.java"],
+			min_sdk_version: "30",
+		}
+	`)
+
+	preparer.
+		RunTestWithBp(t, `
+			java_sdk_library {
+				name: "sdklib",
+				srcs: ["a.java"],
+				libs: ["util"],
+				impl_only_libs: ["util"],
+				stub_only_libs: ["util"],
+				stub_only_static_libs: ["util"],
+				min_sdk_version: "30",
+				unsafe_ignore_missing_latest_api: true,
+			}
+
+			java_library {
+				name: "util",
+				srcs: ["a.java"],
+			}
+		`)
+
+	preparer.ExtendWithErrorHandler(android.FixtureExpectsAtLeastOneErrorMatchingPattern(`module "util".*should support min_sdk_version\(30\)`)).
+		RunTestWithBp(t, `
+			java_sdk_library {
+				name: "sdklib",
+				srcs: ["a.java"],
+				static_libs: ["util"],
+				min_sdk_version: "30",
+				unsafe_ignore_missing_latest_api: true,
+			}
+
+			java_library {
+				name: "util",
+				srcs: ["a.java"],
+				min_sdk_version: "31",
+			}
+		`)
+
+	preparer.ExtendWithErrorHandler(android.FixtureExpectsAtLeastOneErrorMatchingPattern(`module "another_util".*should support min_sdk_version\(30\)`)).
+		RunTestWithBp(t, `
+			java_sdk_library {
+				name: "sdklib",
+				srcs: ["a.java"],
+				static_libs: ["util"],
+				min_sdk_version: "30",
+				unsafe_ignore_missing_latest_api: true,
+			}
+
+			java_library {
+				name: "util",
+				srcs: ["a.java"],
+				static_libs: ["another_util"],
+				min_sdk_version: "30",
+			}
+
+			java_library {
+				name: "another_util",
+				srcs: ["a.java"],
+				min_sdk_version: "31",
+			}
+		`)
+}