Replaces com.android.server.Dumpable by android.util.Dumpable.

Test: adb shell dumpsys system_server_dumper
Bug: 149254050

Change-Id: I4e027599ef46b58963c8b0f97d66e510902f05c7

services/core/java/com/android/server/Dumpable.java

@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2020 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.server;
-
-import android.annotation.NonNull;
-import android.annotation.Nullable;
-import android.util.IndentingPrintWriter;
-
-/**
- * Interface used to dump {@link SystemServer} state that is not associated with any service.
- *
- * <p>See {@link SystemServer.SystemServerDumper} for usage example.
- */
-// TODO(b/149254050): replace / merge with package android.util.Dumpable (it would require
-// exporting IndentingPrintWriter as @SystemApi) and/or changing the method to use a prefix
-public interface Dumpable {
-
-    /**
-     * Dumps the state.
-     */
-    void dump(@NonNull IndentingPrintWriter pw, @Nullable String[] args);
-
-    /**
-     * Gets the name of the dumpable.
-     *
-     * <p>If not overridden, will return the simple class name.
-     */
-    default String getDumpableName() {
-        return Dumpable.this.getClass().getSimpleName();
-    }
-}

services/core/java/com/android/server/SystemServerInitThreadPool.java

@@ -19,7 +19,7 @@ package com.android.server;
 import android.annotation.NonNull;
 import android.os.Build;
 import android.os.Process;
-import android.util.IndentingPrintWriter;
+import android.util.Dumpable;
 import android.util.Slog;
 
 import com.android.internal.annotations.GuardedBy;
@@ -28,6 +28,7 @@ import com.android.internal.util.Preconditions;
 import com.android.server.am.ActivityManagerService;
 import com.android.server.utils.TimingsTraceAndSlog;
 
+import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
@@ -196,7 +197,12 @@ public final class SystemServerInitThreadPool implements Dumpable {
     }
 
     @Override
-    public void dump(IndentingPrintWriter pw, String[] args) {
+    public String getDumpableName() {
+        return SystemServerInitThreadPool.class.getSimpleName();
+    }
+
+    @Override
+    public void dump(PrintWriter pw, String[] args) {
         synchronized (LOCK) {
             pw.printf("has instance: %b\n", (sInstance != null));
         }

services/core/java/com/android/server/SystemServiceManager.java

@@ -27,8 +27,8 @@ import android.os.SystemClock;
 import android.os.Trace;
 import android.os.UserHandle;
 import android.util.ArraySet;
+import android.util.Dumpable;
 import android.util.EventLog;
-import android.util.IndentingPrintWriter;
 import android.util.Slog;
 import android.util.SparseArray;
 
@@ -44,6 +44,7 @@ import com.android.server.utils.TimingsTraceAndSlog;
 import dalvik.system.PathClassLoader;
 
 import java.io.File;
+import java.io.PrintWriter;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
@@ -687,7 +688,12 @@ public final class SystemServiceManager implements Dumpable {
     }
 
     @Override
-    public void dump(IndentingPrintWriter pw, String[] args) {
+    public String getDumpableName() {
+        return SystemServiceManager.class.getSimpleName();
+    }
+
+    @Override
+    public void dump(PrintWriter pw, String[] args) {
         pw.printf("Current phase: %d\n", mCurrentPhase);
         synchronized (mTargetUsers) {
             if (mCurrentUser != null) {
@@ -711,14 +717,13 @@ public final class SystemServiceManager implements Dumpable {
             }
         }
         final int startedLen = mServices.size();
+        String prefix = "  ";
         if (startedLen > 0) {
             pw.printf("%d started services:\n", startedLen);
-            pw.increaseIndent();
             for (int i = 0; i < startedLen; i++) {
                 final SystemService service = mServices.get(i);
-                pw.println(service.getClass().getCanonicalName());
+                pw.print(prefix); pw.println(service.getClass().getCanonicalName());
             }
-            pw.decreaseIndent();
         } else {
             pw.println("No started services");
         }

services/java/com/android/server/SystemServer.java

@@ -85,6 +85,7 @@ import android.system.Os;
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.DisplayMetrics;
+import android.util.Dumpable;
 import android.util.EventLog;
 import android.util.IndentingPrintWriter;
 import android.util.Pair;
@@ -663,7 +664,12 @@ public final class SystemServer implements Dumpable {
     }
 
     @Override
-    public void dump(IndentingPrintWriter pw, String[] args) {
+    public String getDumpableName() {
+        return SystemServer.class.getSimpleName();
+    }
+
+    @Override
+    public void dump(PrintWriter pw, String[] args) {
         pw.printf("Runtime restart: %b\n", mRuntimeRestart);
         pw.printf("Start count: %d\n", mStartCount);
         pw.print("Runtime start-up time: ");