Add package name based APIs to PlatformCompat. (12d0da31) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/compat/IPlatformCompat.aidl

+44 −7

Original line number	Diff line number	Diff line
		@@ -33,14 +33,29 @@ interface IPlatformCompat
		* Reports that a compatibility change is affecting an app process now.
		*
		* <p>Note: for changes that are gated using {@link #isChangeEnabled(long, ApplicationInfo)},
		* you do not need to call this API directly. The change will be reported for you in the case
		* that {@link #isChangeEnabled(long, ApplicationInfo)} returns {@code true}.
		* you do not need to call this API directly. The change will be reported for you.
		*
		* @param changeId The ID of the compatibility change taking effect.
		* @param appInfo Representing the affected app.
		*/
		void reportChange(long changeId, in ApplicationInfo appInfo);

		/**
		* Reports that a compatibility change is affecting an app process now.
		*
		* <p>Same as {@link #reportChange(long, ApplicationInfo)}, except it receives a package name
		* instead of an {@link ApplicationInfo}
		* object, and finds an app info object based on the package name. Returns {@code true} if
		* there is no installed package by that name.
		*
		* <p>Note: for changes that are gated using {@link #isChangeEnabled(long, String)},
		* you do not need to call this API directly. The change will be reported for you.
		*
		* @param changeId The ID of the compatibility change taking effect.
		* @param packageName The package name of the app in question.
		*/
		void reportChangeByPackageName(long changeId, in String packageName);

		/**
		* Query if a given compatibility change is enabled for an app process. This method should
		* be called when implementing functionality on behalf of the affected app.
		@@ -49,13 +64,35 @@ interface IPlatformCompat
		* change, resulting in differing behaviour compared to earlier releases. If this method returns
		* {@code false}, the calling code should behave as it did in earlier releases.
		*
		* <p>When this method returns {@code true}, it will also report the change as
		* {@link #reportChange(long, ApplicationInfo)} would, so there is no need to call that method
		* directly.
		* <p>It will also report the change as {@link #reportChange(long, ApplicationInfo)} would, so
		* there is no need to call that method directly.
		*
		* @param changeId The ID of the compatibility change in question.
		* @param appInfo Representing the app in question.
		* @return {@code true} if the change is enabled for the current app.
		*/
		boolean isChangeEnabled(long changeId, in ApplicationInfo appInfo);

		/**
		* Query if a given compatibility change is enabled for an app process. This method should
		* be called when implementing functionality on behalf of the affected app.
		*
		* <p>Same as {@link #isChangeEnabled(long, ApplicationInfo)}, except it receives a package name
		* instead of an {@link ApplicationInfo}
		* object, and finds an app info object based on the package name. Returns {@code true} if
		* there is no installed package by that name.
		*
		* <p>If this method returns {@code true}, the calling code should implement the compatibility
		* change, resulting in differing behaviour compared to earlier releases. If this method
		* returns
		* {@code false}, the calling code should behave as it did in earlier releases.
		*
		* <p>It will also report the change as {@link #reportChange(long, String)} would, so there is
		* no need to call that method directly.
		*
		* @param changeId The ID of the compatibility change in question.
		* @param packageName The package name of the app in question.
		* @return {@code true} if the change is enabled for the current app.
		*/
		boolean isChangeEnabledByPackageName(long changeId, in String packageName);
		}
		No newline at end of file

services/core/java/com/android/server/compat/PlatformCompat.java

+28 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package com.android.server.compat;

		import android.content.Context;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageManager;
		import android.util.Slog;
		import android.util.StatsLog;

		@@ -48,6 +49,15 @@ public class PlatformCompat extends IPlatformCompat.Stub {
		reportChange(changeId, appInfo, StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__STATE__LOGGED);
		}

		@Override
		public void reportChangeByPackageName(long changeId, String packageName) {
		ApplicationInfo appInfo = getApplicationInfo(packageName);
		if (appInfo == null) {
		return;
		}
		reportChange(changeId, appInfo);
		}

		@Override
		public boolean isChangeEnabled(long changeId, ApplicationInfo appInfo) {
		if (CompatConfig.get().isChangeEnabled(changeId, appInfo)) {
		@@ -60,12 +70,30 @@ public class PlatformCompat extends IPlatformCompat.Stub {
		return false;
		}

		@Override
		public boolean isChangeEnabledByPackageName(long changeId, String packageName) {
		ApplicationInfo appInfo = getApplicationInfo(packageName);
		if (appInfo == null) {
		return true;
		}
		return isChangeEnabled(changeId, appInfo);
		}

		@Override
		protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, "platform_compat", pw)) return;
		CompatConfig.get().dumpConfig(pw);
		}

		private ApplicationInfo getApplicationInfo(String packageName) {
		try {
		return mContext.getPackageManager().getApplicationInfo(packageName, 0);
		} catch (PackageManager.NameNotFoundException e) {
		Slog.e(TAG, "No installed package " + packageName);
		}
		return null;
		}

		private void reportChange(long changeId, ApplicationInfo appInfo, int state) {
		int uid = appInfo.uid;
		//TODO(b/138374585): Implement rate limiting for the logs.