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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.server.telecom;
     18 
     19 import android.content.ComponentName;
     20 import android.content.Context;
     21 import android.os.UserHandle;
     22 import android.util.Pair;
     23 
     24 import com.android.internal.annotations.VisibleForTesting;
     25 import com.android.internal.util.IndentingPrintWriter;
     26 
     27 import java.util.HashMap;
     28 
     29 /**
     30  * Searches for and returns connection services.
     31  */
     32 @VisibleForTesting
     33 public class ConnectionServiceRepository {
     34     private final HashMap<Pair<ComponentName, UserHandle>, ConnectionServiceWrapper> mServiceCache =
     35             new HashMap<>();
     36     private final PhoneAccountRegistrar mPhoneAccountRegistrar;
     37     private final Context mContext;
     38     private final TelecomSystem.SyncRoot mLock;
     39     private final CallsManager mCallsManager;
     40 
     41     private final ServiceBinder.Listener<ConnectionServiceWrapper> mUnbindListener =
     42             new ServiceBinder.Listener<ConnectionServiceWrapper>() {
     43                 @Override
     44                 public void onUnbind(ConnectionServiceWrapper service) {
     45                     synchronized (mLock) {
     46                         mServiceCache.remove(Pair.create(service.getComponentName(),
     47                                 service.getUserHandle()));
     48                     }
     49                 }
     50             };
     51 
     52     ConnectionServiceRepository(
     53             PhoneAccountRegistrar phoneAccountRegistrar,
     54             Context context,
     55             TelecomSystem.SyncRoot lock,
     56             CallsManager callsManager) {
     57         mPhoneAccountRegistrar = phoneAccountRegistrar;
     58         mContext = context;
     59         mLock = lock;
     60         mCallsManager = callsManager;
     61     }
     62 
     63     @VisibleForTesting
     64     public ConnectionServiceWrapper getService(ComponentName componentName, UserHandle userHandle) {
     65         Pair<ComponentName, UserHandle> cacheKey = Pair.create(componentName, userHandle);
     66         ConnectionServiceWrapper service = mServiceCache.get(cacheKey);
     67         if (service == null) {
     68             service = new ConnectionServiceWrapper(
     69                     componentName,
     70                     this,
     71                     mPhoneAccountRegistrar,
     72                     mCallsManager,
     73                     mContext,
     74                     mLock,
     75                     userHandle);
     76             service.addListener(mUnbindListener);
     77             mServiceCache.put(cacheKey, service);
     78         }
     79         return service;
     80     }
     81 
     82     /**
     83      * Dumps the state of the {@link ConnectionServiceRepository}.
     84      *
     85      * @param pw The {@code IndentingPrintWriter} to write the state to.
     86      */
     87     public void dump(IndentingPrintWriter pw) {
     88         pw.println("mServiceCache:");
     89         pw.increaseIndent();
     90         for (Pair<ComponentName, UserHandle> cacheKey : mServiceCache.keySet()) {
     91             ComponentName componentName = cacheKey.first;
     92             pw.println(componentName);
     93         }
     94         pw.decreaseIndent();
     95     }
     96 }
     97