| /* |
| * Copyright (C) 2014 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.job.controllers; |
| |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.net.ConnectivityManager; |
| import android.net.NetworkInfo; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.util.Slog; |
| |
| import com.android.server.ConnectivityService; |
| import com.android.server.job.JobSchedulerService; |
| import com.android.server.job.StateChangedListener; |
| |
| import java.io.PrintWriter; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * Handles changes in connectivity. |
| * We are only interested in metered vs. unmetered networks, and we're interested in them on a |
| * per-user basis. |
| */ |
| public class ConnectivityController extends StateController implements |
| ConnectivityManager.OnNetworkActiveListener { |
| private static final String TAG = "JobScheduler.Conn"; |
| |
| private final List<JobStatus> mTrackedJobs = new LinkedList<JobStatus>(); |
| private final BroadcastReceiver mConnectivityChangedReceiver = |
| new ConnectivityChangedReceiver(); |
| /** Singleton. */ |
| private static ConnectivityController mSingleton; |
| private static Object sCreationLock = new Object(); |
| /** Track whether the latest active network is metered. */ |
| private boolean mNetworkUnmetered; |
| /** Track whether the latest active network is connected. */ |
| private boolean mNetworkConnected; |
| |
| public static ConnectivityController get(JobSchedulerService jms) { |
| synchronized (sCreationLock) { |
| if (mSingleton == null) { |
| mSingleton = new ConnectivityController(jms, jms.getContext()); |
| } |
| return mSingleton; |
| } |
| } |
| |
| private ConnectivityController(StateChangedListener stateChangedListener, Context context) { |
| super(stateChangedListener, context); |
| // Register connectivity changed BR. |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); |
| mContext.registerReceiverAsUser( |
| mConnectivityChangedReceiver, UserHandle.ALL, intentFilter, null, null); |
| ConnectivityService cs = |
| (ConnectivityService)ServiceManager.getService(Context.CONNECTIVITY_SERVICE); |
| if (cs != null) { |
| if (cs.getActiveNetworkInfo() != null) { |
| mNetworkConnected = cs.getActiveNetworkInfo().isConnected(); |
| } |
| mNetworkUnmetered = mNetworkConnected && !cs.isActiveNetworkMetered(); |
| } |
| } |
| |
| @Override |
| public void maybeStartTrackingJob(JobStatus jobStatus, JobStatus lastJob) { |
| if (jobStatus.hasConnectivityConstraint() || jobStatus.hasUnmeteredConstraint()) { |
| synchronized (mTrackedJobs) { |
| jobStatus.connectivityConstraintSatisfied.set(mNetworkConnected); |
| jobStatus.unmeteredConstraintSatisfied.set(mNetworkUnmetered); |
| mTrackedJobs.add(jobStatus); |
| } |
| } |
| } |
| |
| @Override |
| public void maybeStopTrackingJob(JobStatus jobStatus, boolean forUpdate) { |
| if (jobStatus.hasConnectivityConstraint() || jobStatus.hasUnmeteredConstraint()) { |
| synchronized (mTrackedJobs) { |
| mTrackedJobs.remove(jobStatus); |
| } |
| } |
| } |
| |
| /** |
| * @param userId Id of the user for whom we are updating the connectivity state. |
| */ |
| private void updateTrackedJobs(int userId) { |
| synchronized (mTrackedJobs) { |
| boolean changed = false; |
| for (JobStatus js : mTrackedJobs) { |
| if (js.getUserId() != userId) { |
| continue; |
| } |
| boolean prevIsConnected = |
| js.connectivityConstraintSatisfied.getAndSet(mNetworkConnected); |
| boolean prevIsMetered = js.unmeteredConstraintSatisfied.getAndSet(mNetworkUnmetered); |
| if (prevIsConnected != mNetworkConnected || prevIsMetered != mNetworkUnmetered) { |
| changed = true; |
| } |
| } |
| if (changed) { |
| mStateChangedListener.onControllerStateChanged(); |
| } |
| } |
| } |
| |
| /** |
| * We know the network has just come up. We want to run any jobs that are ready. |
| */ |
| public synchronized void onNetworkActive() { |
| synchronized (mTrackedJobs) { |
| for (JobStatus js : mTrackedJobs) { |
| if (js.isReady()) { |
| if (DEBUG) { |
| Slog.d(TAG, "Running " + js + " due to network activity."); |
| } |
| mStateChangedListener.onRunJobNow(js); |
| } |
| } |
| } |
| } |
| |
| class ConnectivityChangedReceiver extends BroadcastReceiver { |
| /** |
| * We'll receive connectivity changes for each user here, which we process independently. |
| * We are only interested in the active network here. We're only interested in the active |
| * network, b/c the end result of this will be for apps to try to hit the network. |
| * @param context The Context in which the receiver is running. |
| * @param intent The Intent being received. |
| */ |
| // TODO: Test whether this will be called twice for each user. |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DEBUG) { |
| Slog.d(TAG, "Received connectivity event: " + intent.getAction() + " u" |
| + context.getUserId()); |
| } |
| final String action = intent.getAction(); |
| if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) { |
| final int networkType = |
| intent.getIntExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, |
| ConnectivityManager.TYPE_NONE); |
| // Connectivity manager for THIS context - important! |
| final ConnectivityManager connManager = (ConnectivityManager) |
| context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| final NetworkInfo activeNetwork = connManager.getActiveNetworkInfo(); |
| final int userid = context.getUserId(); |
| // This broadcast gets sent a lot, only update if the active network has changed. |
| if (activeNetwork == null) { |
| mNetworkUnmetered = false; |
| mNetworkConnected = false; |
| updateTrackedJobs(userid); |
| } else if (activeNetwork.getType() == networkType) { |
| mNetworkUnmetered = false; |
| mNetworkConnected = !intent.getBooleanExtra( |
| ConnectivityManager.EXTRA_NO_CONNECTIVITY, false); |
| if (mNetworkConnected) { // No point making the call if we know there's no conn. |
| mNetworkUnmetered = !connManager.isActiveNetworkMetered(); |
| } |
| updateTrackedJobs(userid); |
| } |
| } else { |
| if (DEBUG) { |
| Slog.d(TAG, "Unrecognised action in intent: " + action); |
| } |
| } |
| } |
| }; |
| |
| @Override |
| public void dumpControllerState(PrintWriter pw) { |
| pw.println("Conn."); |
| pw.println("connected: " + mNetworkConnected + " unmetered: " + mNetworkUnmetered); |
| for (JobStatus js: mTrackedJobs) { |
| pw.println(String.valueOf(js.hashCode()).substring(0, 3) + ".." |
| + ": C=" + js.hasConnectivityConstraint() |
| + ", UM=" + js.hasUnmeteredConstraint()); |
| } |
| } |
| } |