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
diff --git a/java/platform_compat_config.go b/java/platform_compat_config.go
new file mode 100644
index 0000000..792edf3
--- /dev/null
+++ b/java/platform_compat_config.go
@@ -0,0 +1,92 @@
+// 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
+}