Support default-permission in aconfig_declarations

Aconfig provides new argument, default-permission, for create-cache.
When buld aconfig_declarations, aconfig_declarations will read the value
from release configuration to pass this value to aconfig.

Bug: 294417368
Test: presubmit
Change-Id: Id55dab1d757e2366a62449c73e2497cc958c5e78

aconfig/aconfig_declarations.go

@@ -96,6 +96,15 @@ func joinAndPrefix(prefix string, values []string) string {
 	return sb.String()
 }
 
+func optionalVariable(prefix string, value string) string {
+	var sb strings.Builder
+	if value != "" {
+		sb.WriteString(prefix)
+		sb.WriteString(value)
+	}
+	return sb.String()
+}
+
 // Provider published by aconfig_value_set
 type declarationsProviderData struct {
 	Package          string
@@ -123,15 +132,17 @@ func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.Module
 	// Intermediate format
 	inputFiles := android.PathsForModuleSrc(ctx, module.properties.Srcs)
 	intermediatePath := android.PathForModuleOut(ctx, "intermediate.pb")
+	defaultPermission := ctx.Config().ReleaseAconfigFlagDefaultPermission()
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        aconfigRule,
 		Output:      intermediatePath,
 		Description: "aconfig_declarations",
 		Args: map[string]string{
-			"release_version": ctx.Config().ReleaseVersion(),
-			"package":         module.properties.Package,
-			"declarations":    android.JoinPathsWithPrefix(inputFiles, "--declarations "),
-			"values":          joinAndPrefix(" --values ", module.properties.Values),
+			"release_version":    ctx.Config().ReleaseVersion(),
+			"package":            module.properties.Package,
+			"declarations":       android.JoinPathsWithPrefix(inputFiles, "--declarations "),
+			"values":             joinAndPrefix(" --values ", module.properties.Values),
+			"default-permission": optionalVariable(" --default-permission ", defaultPermission),
 		},
 	})
 

aconfig/init.go

@@ -29,6 +29,7 @@ var (
 				` --package ${package}` +
 				` ${declarations}` +
 				` ${values}` +
+				` ${default-permission}` +
 				` --cache ${out}.tmp` +
 				` && ( if cmp -s ${out}.tmp ${out} ; then rm ${out}.tmp ; else mv ${out}.tmp ${out} ; fi )`,
 			//				` --build-id ${release_version}` +
@@ -36,7 +37,7 @@ var (
 				"${aconfig}",
 			},
 			Restat: true,
-		}, "release_version", "package", "declarations", "values")
+		}, "release_version", "package", "declarations", "values", "default-permission")
 
 	// For java_aconfig_library: Generate java file
 	javaRule = pctx.AndroidStaticRule("java_aconfig_library",

android/config.go

@@ -200,6 +200,12 @@ func (c Config) ReleaseAconfigValueSets() []string {
 	return c.config.productVariables.ReleaseAconfigValueSets
 }
 
+// The flag default permission value passed to aconfig
+// derived from RELEASE_ACONFIG_FLAG_DEFAULT_PERMISSION
+func (c Config) ReleaseAconfigFlagDefaultPermission() string {
+	return c.config.productVariables.ReleaseAconfigFlagDefaultPermission
+}
+
 // A DeviceConfig object represents the configuration for a particular device
 // being built. For now there will only be one of these, but in the future there
 // may be multiple devices being built.

android/variable.go

@@ -491,6 +491,8 @@ type ProductVariables struct {
 	ReleaseVersion          string   `json:",omitempty"`
 	ReleaseAconfigValueSets []string `json:",omitempty"`
 
+	ReleaseAconfigFlagDefaultPermission string `json:",omitempty"`
+
 	KeepVndk *bool `json:",omitempty"`
 }