Merge "Add apis for listing all compat changes"

am: 2c3b1a1010

Change-Id: I5b756833ba7637ac80f4219783ff24c190412641

core/java/com/android/internal/compat/CompatibilityChangeConfig.java

@@ -49,6 +49,18 @@ public final class CompatibilityChangeConfig implements Parcelable {
         return mChangeConfig.forceDisabledSet();
     }
 
+    /**
+     * Returns if a change is enabled or disabled in this config.
+     */
+    public boolean isChangeEnabled(long changeId) {
+        if (mChangeConfig.isForceEnabled(changeId)) {
+            return true;
+        } else if (mChangeConfig.isForceDisabled(changeId)) {
+            return false;
+        }
+        throw new IllegalStateException("Change " + changeId + " is not defined.");
+    }
+
     private CompatibilityChangeConfig(Parcel in) {
         long[] enabledArray = in.createLongArray();
         long[] disabledArray = in.createLongArray();

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

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * 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 com.android.internal.compat;
+
+parcelable CompatibilityChangeInfo;

core/java/com/android/internal/compat/CompatibilityChangeInfo.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * 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 com.android.internal.compat;
+
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * This class is a parcelable version of {@link com.android.server.compat.Change}.
+ *
+ * @hide
+ */
+public class CompatibilityChangeInfo implements Parcelable {
+    private final long mChangeId;
+    private final @Nullable String mName;
+    private final int mEnableAfterTargetSdk;
+    private final boolean mDisabled;
+
+    public long getId() {
+        return mChangeId;
+    }
+
+    @Nullable
+    public String getName() {
+        return mName;
+    }
+
+    public int getEnableAfterTargetSdk() {
+        return mEnableAfterTargetSdk;
+    }
+
+    public boolean getDisabled() {
+        return mDisabled;
+    }
+
+    public CompatibilityChangeInfo(
+            Long changeId, String name, int enableAfterTargetSdk, boolean disabled) {
+        this.mChangeId = changeId;
+        this.mName = name;
+        this.mEnableAfterTargetSdk = enableAfterTargetSdk;
+        this.mDisabled = disabled;
+    }
+
+    private CompatibilityChangeInfo(Parcel in) {
+        mChangeId = in.readLong();
+        mName = in.readString();
+        mEnableAfterTargetSdk = in.readInt();
+        mDisabled = in.readBoolean();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeLong(mChangeId);
+        dest.writeString(mName);
+        dest.writeInt(mEnableAfterTargetSdk);
+        dest.writeBoolean(mDisabled);
+    }
+
+    public static final Parcelable.Creator<CompatibilityChangeInfo> CREATOR =
+            new Parcelable.Creator<CompatibilityChangeInfo>() {
+
+                @Override
+                public CompatibilityChangeInfo createFromParcel(Parcel in) {
+                    return new CompatibilityChangeInfo(in);
+                }
+
+                @Override
+                public CompatibilityChangeInfo[] newArray(int size) {
+                    return new CompatibilityChangeInfo[size];
+                }
+            };
+}

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

@@ -17,8 +17,10 @@
 package com.android.internal.compat;
 
 import android.content.pm.ApplicationInfo;
+import java.util.Map;
 
 parcelable CompatibilityChangeConfig;
+parcelable CompatibilityChangeInfo;
 
 /**
  * Platform private API for talking with the PlatformCompat service.
@@ -146,4 +148,21 @@ interface IPlatformCompat
      *
      */
     void clearOverrides(in String packageName);
+
+    /**
+     * Get configs for an application.
+     *
+     * @param appInfo The application whose config will be returned.
+     *
+     * @return A {@link CompatibilityChangeConfig}, representing whether a change is enabled for
+     *         the given app or not.
+     */
+    CompatibilityChangeConfig getAppConfig(in ApplicationInfo appInfo);
+
+    /**
+     * List all compatibility changes.
+     *
+     * @return An array of {@link CompatChangeInfo} known to the service.
+     */
+    CompatibilityChangeInfo[] listAllChanges();
 }

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

@@ -20,6 +20,7 @@ import android.annotation.Nullable;
 import android.compat.annotation.EnabledAfter;
 import android.content.pm.ApplicationInfo;
 
+import com.android.internal.compat.CompatibilityChangeInfo;
 import com.android.server.compat.config.Change;
 
 import java.util.HashMap;
@@ -35,12 +36,8 @@ import java.util.Map;
  *
  * <p>Note, this class is not thread safe so callers must ensure thread safety.
  */
-public final class CompatChange {
+public final class CompatChange extends CompatibilityChangeInfo {
 
-    private final long mChangeId;
-    @Nullable private final String mName;
-    private final int mEnableAfterTargetSdk;
-    private final boolean mDisabled;
     private Map<String, Boolean> mPackageOverrides;
 
     public CompatChange(long changeId) {
@@ -56,29 +53,15 @@ public final class CompatChange {
      */
     public CompatChange(long changeId, @Nullable String name, int enableAfterTargetSdk,
             boolean disabled) {
-        mChangeId = changeId;
+        super(changeId, name, enableAfterTargetSdk, disabled);
-        mName = name;
-        mEnableAfterTargetSdk = enableAfterTargetSdk;
-        mDisabled = disabled;
     }
 
     /**
      * @param change an object generated by services/core/xsd/platform-compat-config.xsd
      */
     public CompatChange(Change change) {
-        mChangeId = change.getId();
+        super(change.getId(), change.getName(), change.getEnableAfterTargetSdk(),
-        mName = change.getName();
+                change.getDisabled());
-        mEnableAfterTargetSdk = change.getEnableAfterTargetSdk();
-        mDisabled = change.getDisabled();
-    }
-
-    long getId() {
-        return mChangeId;
-    }
-
-    @Nullable
-    String getName() {
-        return mName;
     }
 
     /**
@@ -121,11 +104,11 @@ public final class CompatChange {
         if (mPackageOverrides != null && mPackageOverrides.containsKey(app.packageName)) {
             return mPackageOverrides.get(app.packageName);
         }
-        if (mDisabled) {
+        if (getDisabled()) {
             return false;
         }
-        if (mEnableAfterTargetSdk != -1) {
+        if (getEnableAfterTargetSdk() != -1) {
-            return app.targetSdkVersion > mEnableAfterTargetSdk;
+            return app.targetSdkVersion > getEnableAfterTargetSdk();
         }
         return true;
     }
@@ -133,14 +116,14 @@ public final class CompatChange {
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder("ChangeId(")
-                .append(mChangeId);
+                .append(getId());
-        if (mName != null) {
+        if (getName() != null) {
-            sb.append("; name=").append(mName);
+            sb.append("; name=").append(getName());
         }
-        if (mEnableAfterTargetSdk != -1) {
+        if (getEnableAfterTargetSdk() != -1) {
-            sb.append("; enableAfterTargetSdk=").append(mEnableAfterTargetSdk);
+            sb.append("; enableAfterTargetSdk=").append(getEnableAfterTargetSdk());
         }
-        if (mDisabled) {
+        if (getDisabled()) {
             sb.append("; disabled");
         }
         if (mPackageOverrides != null && mPackageOverrides.size() > 0) {

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

@@ -16,6 +16,7 @@
 
 package com.android.server.compat;
 
+import android.compat.Compatibility.ChangeConfig;
 import android.content.pm.ApplicationInfo;
 import android.os.Environment;
 import android.text.TextUtils;
@@ -26,6 +27,7 @@ import android.util.Slog;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.compat.CompatibilityChangeConfig;
+import com.android.internal.compat.CompatibilityChangeInfo;
 import com.android.server.compat.config.Change;
 import com.android.server.compat.config.XmlParser;
 
@@ -37,6 +39,8 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.PrintWriter;
+import java.util.HashSet;
+import java.util.Set;
 
 import javax.xml.datatype.DatatypeConfigurationException;
 /**
@@ -243,6 +247,49 @@ public final class CompatConfig {
         }
     }
 
+    /**
+     * Get the config for a given app.
+     *
+     * @param applicationInfo the {@link ApplicationInfo} for which the info should be dumped.
+     * @return A {@link CompatibilityChangeConfig} which contains the compat config info for the
+     *         given app.
+     */
+
+    public CompatibilityChangeConfig getAppConfig(ApplicationInfo applicationInfo) {
+        Set<Long> enabled = new HashSet<>();
+        Set<Long> disabled = new HashSet<>();
+        synchronized (mChanges) {
+            for (int i = 0; i < mChanges.size(); ++i) {
+                CompatChange c = mChanges.valueAt(i);
+                if (c.isEnabled(applicationInfo)) {
+                    enabled.add(c.getId());
+                } else {
+                    disabled.add(c.getId());
+                }
+            }
+        }
+        return new CompatibilityChangeConfig(new ChangeConfig(enabled, disabled));
+    }
+
+    /**
+     * Dumps all the compatibility change information.
+     *
+     * @return An array of {@link CompatibilityChangeInfo} with the current changes.
+     */
+    public CompatibilityChangeInfo[] dumpChanges() {
+        synchronized (mChanges) {
+            CompatibilityChangeInfo[] changeInfos = new CompatibilityChangeInfo[mChanges.size()];
+            for (int i = 0; i < mChanges.size(); ++i) {
+                CompatChange change = mChanges.valueAt(i);
+                changeInfos[i] = new CompatibilityChangeInfo(change.getId(),
+                                                      change.getName(),
+                                                      change.getEnableAfterTargetSdk(),
+                                                      change.getDisabled());
+            }
+            return changeInfos;
+        }
+    }
+
     CompatConfig initConfigFromLib(File libraryDir) {
         if (!libraryDir.exists() || !libraryDir.isDirectory()) {
             Slog.e(TAG, "No directory " + libraryDir + ", skipping");

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

@@ -25,6 +25,7 @@ import android.util.StatsLog;
 
 import com.android.internal.compat.ChangeReporter;
 import com.android.internal.compat.CompatibilityChangeConfig;
+import com.android.internal.compat.CompatibilityChangeInfo;
 import com.android.internal.compat.IPlatformCompat;
 import com.android.internal.util.DumpUtils;
 
@@ -113,6 +114,16 @@ public class PlatformCompat extends IPlatformCompat.Stub {
         config.removePackageOverrides(packageName);
     }
 
+    @Override
+    public CompatibilityChangeConfig getAppConfig(ApplicationInfo appInfo) {
+        return CompatConfig.get().getAppConfig(appInfo);
+    }
+
+    @Override
+    public CompatibilityChangeInfo[] listAllChanges() {
+        return CompatConfig.get().dumpChanges();
+    }
+
     @Override
     protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
         if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, "platform_compat", pw)) return;