From 4e41029811d64aecfa00df0d990eb4934921f404 Mon Sep 17 00:00:00 2001
From: Peiyong Lin <lpy@google.com>
Date: Mon, 8 Apr 2019 16:12:12 -0700
Subject: [GPU Service] Query Game driver blacklists from DeviceConfig.

BUG: 121350991
Test: Verified with adb shell device_config put game_driver game_driver_blacklists
Change-Id: I6d029371e9776f6b599c96fefc16bad8a4eb7e9c
---
 .../java/com/android/server/gpu/GpuService.java    | 38 ++++++++++++++++++----
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/services/core/java/com/android/server/gpu/GpuService.java b/services/core/java/com/android/server/gpu/GpuService.java
index 647727f795da..0f73f379900b 100644
--- a/services/core/java/com/android/server/gpu/GpuService.java
+++ b/services/core/java/com/android/server/gpu/GpuService.java
@@ -36,6 +36,7 @@ import android.os.Build;
 import android.os.Handler;
 import android.os.SystemProperties;
 import android.os.UserHandle;
+import android.provider.DeviceConfig;
 import android.provider.Settings;
 import android.util.Base64;
 import android.util.Slog;
@@ -69,9 +70,11 @@ public class GpuService extends SystemService {
     private final String mDriverPackageName;
     private final PackageManager mPackageManager;
     private final Object mLock = new Object();
+    private final Object mDeviceConfigLock = new Object();
     private ContentResolver mContentResolver;
     private long mGameDriverVersionCode;
     private SettingsObserver mSettingsObserver;
+    private DeviceConfigListener mDeviceConfigListener;
     @GuardedBy("mLock")
     private Blacklists mBlacklists;
 
@@ -101,10 +104,11 @@ public class GpuService extends SystemService {
     public void onBootPhase(int phase) {
         if (phase == PHASE_BOOT_COMPLETED) {
             mContentResolver = mContext.getContentResolver();
-            mSettingsObserver = new SettingsObserver();
             if (mDriverPackageName == null || mDriverPackageName.isEmpty()) {
                 return;
             }
+            mSettingsObserver = new SettingsObserver();
+            mDeviceConfigListener = new DeviceConfigListener();
             fetchGameDriverPackageProperties();
             processBlacklists();
             setBlacklist();
@@ -134,6 +138,24 @@ public class GpuService extends SystemService {
         }
     }
 
+    private final class DeviceConfigListener implements DeviceConfig.OnPropertyChangedListener {
+
+        DeviceConfigListener() {
+            super();
+            DeviceConfig.addOnPropertyChangedListener(DeviceConfig.NAMESPACE_GAME_DRIVER,
+                    mContext.getMainExecutor(), this);
+        }
+        @Override
+        public void onPropertyChanged(String namespace, String name, String value) {
+            synchronized (mDeviceConfigLock) {
+                if (Settings.Global.GAME_DRIVER_BLACKLISTS.equals(name)) {
+                    parseBlacklists(value != null ? value : "");
+                    setBlacklist();
+                }
+            }
+        }
+    }
+
     private final class PackageReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(@NonNull final Context context, @NonNull final Intent intent) {
@@ -229,13 +251,17 @@ public class GpuService extends SystemService {
     }
 
     private void processBlacklists() {
-        // TODO(b/121350991) Switch to DeviceConfig with property listener.
-        String base64String =
-                Settings.Global.getString(mContentResolver, Settings.Global.GAME_DRIVER_BLACKLISTS);
-        if (base64String == null || base64String.isEmpty()) {
-            return;
+        String base64String = DeviceConfig.getProperty(DeviceConfig.NAMESPACE_GAME_DRIVER,
+                Settings.Global.GAME_DRIVER_BLACKLISTS);
+        if (base64String == null) {
+            base64String =
+                    Settings.Global.getString(mContentResolver,
+                                              Settings.Global.GAME_DRIVER_BLACKLISTS);
         }
+        parseBlacklists(base64String != null ? base64String : "");
+    }
 
+    private void parseBlacklists(String base64String) {
         synchronized (mLock) {
             // Reset all blacklists
             mBlacklists = null;
-- 
cgit v1.2.3-59-g8ed1b