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/*
* Copyright (C) 2017 Google Inc.
*
* 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.google.android.mobly.snippet.example3;
import com.google.android.mobly.snippet.Snippet;
import com.google.android.mobly.snippet.event.EventCache;
import com.google.android.mobly.snippet.event.SnippetEvent;
import com.google.android.mobly.snippet.rpc.AsyncRpc;
import com.google.android.mobly.snippet.util.Log;
public class ExampleAsyncSnippet implements Snippet {
private final EventCache mEventCache = EventCache.getInstance();
/**
* This is a sample asynchronous task.
*
* In real world use cases, it can be a {@link android.content.BroadcastReceiver}, a Listener,
* or any other kind asynchronous callback class.
*/
public class AsyncTask implements Runnable {
private final String mCallbackId;
private final int mSecretNumber;
public AsyncTask(String callbackId, int secreteNumber) {
this.mCallbackId = callbackId;
this.mSecretNumber = secreteNumber;
}
/**
* Sleeps for 10s then post a {@link SnippetEvent} with some data.
*
* If the sleep is interrupted, a {@link SnippetEvent} signaling failure will be posted instead.
*/
public void run() {
Log.d("Sleeping for 10s before posting an event.");
SnippetEvent event = new SnippetEvent(mCallbackId, "AsyncTaskResult");
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
event.getData().putBoolean("successful", false);
event.getData().putString("reason", "Sleep was interrupted.");
mEventCache.postEvent(event);
}
event.getData().putBoolean("successful", true);
event.getData().putString("exampleData", "Here's a simple event.");
event.getData().putInt("secretNumber", mSecretNumber);
mEventCache.postEvent(event);
}
}
/**
* An Rpc method demonstrating the async event mechanism.
*
* This call returns immediately, but starts a task in a separate thread which will post an
* event 10s after the task was started.
*
* Expect to see an event on the client side that looks like:
*
* {
* 'callbackId': '2-1',
* 'name': 'AsyncTaskResult',
* 'time': 20460228696,
* 'data': {
* 'exampleData': "Here's a simple event.",
* 'successful': True,
* 'secretNumber': 12
* }
* }
*
* @param callbackId The ID that should be used to tag {@link SnippetEvent} objects triggered by
* this method.
* @throws InterruptedException
*/
@AsyncRpc(description = "This triggers an async event and returns.")
public void tryEvent(String callbackId, int secretNumber) throws InterruptedException {
Runnable asyncTask = new AsyncTask(callbackId, secretNumber);
Thread thread = new Thread(asyncTask);
thread.start();
}
@Override
public void shutdown() {}
}
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