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Commit db25ac07 authored by atrost's avatar atrost
Browse files

Create a module that extracts and installs compat_config. 

Currently it extracts from the provided jar file compat/compat_config.xml
(generated by compat-changeid-annotation-processor) and installs on
/system/etc/sysconfig.
Future improvements:
 - Merge all the configs going for the system image into one, so that
   duplicate change ids across modules are failing the build instead of
   runtime.
 - Support uploading the config onto APEX for APEX modules.

Test: flashed device locally, config files found and read by
com.android.server.compat.CompatConfig.
Bug: 138222363

Change-Id: I64b11fdc466f746702e7e73f612794e024de2288
parent d62b4af8

Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -282,6 +282,7 @@ bootstrap_go_package { 
        "java/jdeps.go",

        "java/java_resources.go",

        "java/kotlin.go",

        "java/platform_compat_config.go",

        "java/plugin.go",

        "java/prebuilt_apis.go",

        "java/proto.go",

java/platform_compat_config.go

0 → 100644
+92 −0
Original line number Diff line number Diff line 
// Copyright 2019 Google Inc. All rights reserved.

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//     http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.



package java



import (

	"android/soong/android"

)



func init() {

	android.RegisterModuleType("platform_compat_config", platformCompatConfigFactory)

}



type platformCompatConfigProperties struct {

	Src    *string `android:"path"`

	Prefix *string

}



type platformCompatConfig struct {

	android.ModuleBase



	properties     platformCompatConfigProperties

	installDirPath android.OutputPath

	configFile     android.OutputPath

}



func (p *platformCompatConfig) GenerateAndroidBuildActions(ctx android.ModuleContext) {

	rule := android.NewRuleBuilder()



	configFileName := String(p.properties.Prefix) + "_platform_compat_config.xml"

	p.configFile = android.PathForModuleOut(ctx, configFileName).OutputPath

	path := android.PathForModuleSrc(ctx, String(p.properties.Src))



	// Use the empty config if the compat config file idoesn't exist (can happen if @ChangeId

	// annotation is not used).

	emptyConfig := `<?xml version="1.0" encoding="UTF-8" standalone="no"?><config/>`

	configPath := `compat/compat_config.xml`



	rule.Command().

		Text(`unzip`).

		Flag(`-l`).

		Input(path).

		Text(`| grep`).

		Flag(`-q`).

		Text(configPath).

		Text(`; if [ "$?" = "0" ] ; then`).

		Text(`unzip`).

		Flag(`-qp`).

		Input(path).

		Text(configPath).

		Text(`>`).

		Output(p.configFile).

		Text(`; else echo '`).

		Text(emptyConfig).

		Text(`' >`).

		Output(p.configFile).

		Text(`; fi`)



	p.installDirPath = android.PathForModuleInstall(ctx, "etc", "sysconfig")

	rule.Build(pctx, ctx, configFileName, "Extract compat/compat_config.xml and install it")



}



func (p *platformCompatConfig) AndroidMkEntries() android.AndroidMkEntries {

	return android.AndroidMkEntries{

		Class:      "ETC",

		OutputFile: android.OptionalPathForPath(p.configFile),

		Include:    "$(BUILD_PREBUILT)",

		AddCustomEntries: func(name, prefix, moduleDir string, entries *android.AndroidMkEntries) {

			entries.SetString("LOCAL_MODULE_PATH", "$(OUT_DIR)/"+p.installDirPath.RelPathString())

			entries.SetString("LOCAL_INSTALLED_MODULE_STEM", p.configFile.Base())

		},

	}

}



func platformCompatConfigFactory() android.Module {

	module := &platformCompatConfig{}

	module.AddProperties(&module.properties)

	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)

	return module

}