diff options
| -rw-r--r-- | services/api/current.txt | 5 | ||||
| -rw-r--r-- | services/api/non-updatable-current.txt | 5 | ||||
| -rw-r--r-- | services/core/java/com/android/server/LocalManagerRegistry.java | 73 |
3 files changed, 83 insertions, 0 deletions
diff --git a/services/api/current.txt b/services/api/current.txt index 9bbb3efcc7c2..17ca369c62ab 100644 --- a/services/api/current.txt +++ b/services/api/current.txt @@ -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(); diff --git a/services/api/non-updatable-current.txt b/services/api/non-updatable-current.txt index 5a8c3148e32c..647739f34cf2 100644 --- a/services/api/non-updatable-current.txt +++ b/services/api/non-updatable-current.txt @@ -1,6 +1,11 @@ // 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(); diff --git a/services/core/java/com/android/server/LocalManagerRegistry.java b/services/core/java/com/android/server/LocalManagerRegistry.java new file mode 100644 index 000000000000..85795fff61ee --- /dev/null +++ b/services/core/java/com/android/server/LocalManagerRegistry.java @@ -0,0 +1,73 @@ +/* + * 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); + } + } +} |