| /* |
| * Copyright (C) 2016 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.wifi; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.util.Log; |
| |
| import com.android.internal.util.AsyncChannel; |
| |
| |
| /** |
| * Provides an AsyncChannel interface that implements the connection initiating half of a |
| * bidirectional channel as described in {@link com.android.internal.util.AsyncChannel}. |
| */ |
| public class BidirectionalAsyncChannel { |
| private static final String TAG = "BidirectionalAsyncChannel"; |
| |
| private AsyncChannel mChannel; |
| public enum ChannelState { DISCONNECTED, HALF_CONNECTED, CONNECTED, FAILURE }; |
| private ChannelState mState = ChannelState.DISCONNECTED; |
| |
| public void assertConnected() { |
| assertEquals("AsyncChannel was not fully connected", ChannelState.CONNECTED, mState); |
| } |
| |
| public void connect(final Looper looper, final Messenger messenger, |
| final Handler incomingMessageHandler) { |
| assertEquals("AsyncChannel must be disconnected to connect", |
| ChannelState.DISCONNECTED, mState); |
| mChannel = new AsyncChannel(); |
| Handler rawMessageHandler = new Handler(looper) { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: |
| if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| Log.d(TAG, "Successfully half connected " + this); |
| mChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); |
| mState = ChannelState.HALF_CONNECTED; |
| } else { |
| Log.d(TAG, "Failed to connect channel " + this); |
| mState = ChannelState.FAILURE; |
| mChannel = null; |
| } |
| break; |
| case AsyncChannel.CMD_CHANNEL_FULLY_CONNECTED: |
| mState = ChannelState.CONNECTED; |
| Log.d(TAG, "Channel fully connected" + this); |
| break; |
| case AsyncChannel.CMD_CHANNEL_DISCONNECTED: |
| mState = ChannelState.DISCONNECTED; |
| mChannel = null; |
| Log.d(TAG, "Channel disconnected" + this); |
| break; |
| default: |
| incomingMessageHandler.handleMessage(msg); |
| break; |
| } |
| } |
| }; |
| mChannel.connect(null, rawMessageHandler, messenger); |
| } |
| |
| public void disconnect() { |
| assertEquals("AsyncChannel must be connected to disconnect", |
| ChannelState.CONNECTED, mState); |
| mChannel.sendMessage(AsyncChannel.CMD_CHANNEL_DISCONNECT); |
| mState = ChannelState.DISCONNECTED; |
| mChannel = null; |
| } |
| |
| public void sendMessage(Message msg) { |
| assertEquals("AsyncChannel must be connected to send messages", |
| ChannelState.CONNECTED, mState); |
| mChannel.sendMessage(msg); |
| } |
| } |