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Commit 4eb5f086 authored by Christian Wailes's avatar Christian Wailes Committed by Automerger Merge Worker
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Merge "Add LocalManagerRegistry inside system server." am: 76348ffa 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1607280

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I06a3a499afba0b7a20b8b474393aa68cffb4fd23
parents f92683b7 76348ffa

services/api/current.txt

+5 −0
Original line number Diff line number Diff line
@@ -46,6 +46,11 @@ package com.android.role.persistence { 


package com.android.server {



  public final class LocalManagerRegistry {

    method public static <T> void addManager(@NonNull Class<T>, @NonNull T);

    method @Nullable public static <T> T getManager(@NonNull Class<T>);

  }



  public abstract class SystemService {

    ctor public SystemService(@NonNull android.content.Context);

    method @NonNull public final android.content.Context getContext();

services/api/non-updatable-current.txt

+5 −0
Original line number Diff line number Diff line 
// Signature format: 2.0

package com.android.server {



  public final class LocalManagerRegistry {

    method public static <T> void addManager(@NonNull Class<T>, @NonNull T);

    method @Nullable public static <T> T getManager(@NonNull Class<T>);

  }



  public abstract class SystemService {

    ctor public SystemService(@NonNull android.content.Context);

    method @NonNull public final android.content.Context getContext();

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

0 → 100644
+73 −0
Original line number Diff line number Diff line 
/*

 * 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.annotation.SystemApi;

import android.util.ArrayMap;



import java.util.Map;

import java.util.Objects;



/**

 * The registry for in-process module interfaces.

 * <p>

 * In-process module interfaces should be named with the suffix {@code ManagerLocal} for

 * consistency.

 *

 * @hide

 */

@SystemApi(client = SystemApi.Client.SYSTEM_SERVER)

public final class LocalManagerRegistry {

    private LocalManagerRegistry() {}



    @NonNull

    private static final Map<Class<?>, Object> sManagers = new ArrayMap<>();



    /**

     * Get a manager from the registry.

     *

     * @param managerClass the class that the manager implements

     * @return the manager, or {@code null} if not found

     */

    @Nullable

    @SuppressWarnings("unchecked")

    public static <T> T getManager(@NonNull Class<T> managerClass) {

        synchronized (sManagers) {

            return (T) sManagers.get(managerClass);

        }

    }



    /**

     * Adds a manager to the registry.

     *

     * @param managerClass the class that the manager implements

     * @param manager the manager

     * @throws IllegalStateException if the manager class is already registered

     */

    public static <T> void addManager(@NonNull Class<T> managerClass, @NonNull T manager) {

        Objects.requireNonNull(managerClass, "managerClass");

        Objects.requireNonNull(manager, "manager");

        synchronized (sManagers) {

            if (sManagers.containsKey(managerClass)) {

                throw new IllegalStateException(managerClass.getName() + " is already registered");

            }

            sManagers.put(managerClass, manager);

        }

    }

}