| /* |
| * 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.app.job.JobInfo; |
| import android.content.Context; |
| import android.net.ConnectivityManager; |
| import android.net.ConnectivityManager.NetworkCallback; |
| import android.net.INetworkPolicyListener; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkInfo; |
| import android.net.NetworkPolicyManager; |
| import android.os.Process; |
| import android.os.UserHandle; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.server.job.JobSchedulerService; |
| import com.android.server.job.StateChangedListener; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| |
| /** |
| * Handles changes in connectivity. |
| * <p> |
| * Each app can have a different default networks or different connectivity |
| * status due to user-requested network policies, so we need to check |
| * constraints on a per-UID basis. |
| */ |
| public class ConnectivityController extends StateController implements |
| ConnectivityManager.OnNetworkActiveListener { |
| private static final String TAG = "JobScheduler.Conn"; |
| private static final boolean DEBUG = false; |
| |
| private final ConnectivityManager mConnManager; |
| private final NetworkPolicyManager mNetPolicyManager; |
| private boolean mConnected; |
| private boolean mValidated; |
| |
| @GuardedBy("mLock") |
| private final ArrayList<JobStatus> mTrackedJobs = new ArrayList<JobStatus>(); |
| |
| /** Singleton. */ |
| private static ConnectivityController mSingleton; |
| private static Object sCreationLock = new Object(); |
| |
| public static ConnectivityController get(JobSchedulerService jms) { |
| synchronized (sCreationLock) { |
| if (mSingleton == null) { |
| mSingleton = new ConnectivityController(jms, jms.getContext(), jms.getLock()); |
| } |
| return mSingleton; |
| } |
| } |
| |
| private ConnectivityController(StateChangedListener stateChangedListener, Context context, |
| Object lock) { |
| super(stateChangedListener, context, lock); |
| |
| mConnManager = mContext.getSystemService(ConnectivityManager.class); |
| mNetPolicyManager = mContext.getSystemService(NetworkPolicyManager.class); |
| |
| mConnected = mValidated = false; |
| |
| mConnManager.registerDefaultNetworkCallback(mNetworkCallback); |
| mNetPolicyManager.registerListener(mNetPolicyListener); |
| } |
| |
| @Override |
| public void maybeStartTrackingJobLocked(JobStatus jobStatus, JobStatus lastJob) { |
| if (jobStatus.hasConnectivityConstraint()) { |
| updateConstraintsSatisfied(jobStatus, null); |
| mTrackedJobs.add(jobStatus); |
| } |
| } |
| |
| @Override |
| public void maybeStopTrackingJobLocked(JobStatus jobStatus, JobStatus incomingJob, |
| boolean forUpdate) { |
| if (jobStatus.hasConnectivityConstraint()) { |
| mTrackedJobs.remove(jobStatus); |
| } |
| } |
| |
| private boolean updateConstraintsSatisfied(JobStatus jobStatus, |
| NetworkCapabilities capabilities) { |
| final int jobUid = jobStatus.getSourceUid(); |
| final boolean ignoreBlocked = (jobStatus.getFlags() & JobInfo.FLAG_WILL_BE_FOREGROUND) != 0; |
| final NetworkInfo info = mConnManager.getActiveNetworkInfoForUid(jobUid, ignoreBlocked); |
| if (capabilities == null) { |
| final Network network = mConnManager.getActiveNetworkForUid(jobUid, ignoreBlocked); |
| capabilities = mConnManager.getNetworkCapabilities(network); |
| } |
| |
| final boolean validated = capabilities != null |
| && capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); |
| final boolean connected = info != null && info.isConnected(); |
| final boolean connectionUsable = connected && validated; |
| final boolean metered = connected && info.isMetered(); |
| final boolean unmetered = connected && !info.isMetered(); |
| final boolean notRoaming = connected && !info.isRoaming(); |
| |
| boolean changed = false; |
| changed |= jobStatus.setConnectivityConstraintSatisfied(connectionUsable); |
| changed |= jobStatus.setMeteredConstraintSatisfied(metered); |
| changed |= jobStatus.setUnmeteredConstraintSatisfied(unmetered); |
| changed |= jobStatus.setNotRoamingConstraintSatisfied(notRoaming); |
| |
| // Track system-uid connected/validated as a general reportable proxy for the |
| // overall state of connectivity constraint satisfiability. |
| if (jobUid == Process.SYSTEM_UID) { |
| mConnected = connected; |
| mValidated = validated; |
| } |
| |
| if (DEBUG) { |
| Slog.i(TAG, "Connectivity " + (changed ? "CHANGED" : "unchanged") |
| + " for " + jobStatus + ": usable=" + connectionUsable |
| + " connected=" + connected |
| + " validated=" + validated |
| + " metered=" + metered |
| + " unmetered=" + unmetered |
| + " notRoaming=" + notRoaming); |
| } |
| return changed; |
| } |
| |
| /** |
| * Update all jobs tracked by this controller. |
| * |
| * @param uid only update jobs belonging to this UID, or {@code -1} to |
| * update all tracked jobs. |
| */ |
| private void updateTrackedJobs(int uid, NetworkCapabilities capabilities) { |
| synchronized (mLock) { |
| boolean changed = false; |
| for (int i = 0; i < mTrackedJobs.size(); i++) { |
| final JobStatus js = mTrackedJobs.get(i); |
| if (uid == -1 || uid == js.getSourceUid()) { |
| changed |= updateConstraintsSatisfied(js, capabilities); |
| } |
| } |
| if (changed) { |
| mStateChangedListener.onControllerStateChanged(); |
| } |
| } |
| } |
| |
| /** |
| * We know the network has just come up. We want to run any jobs that are ready. |
| */ |
| @Override |
| public void onNetworkActive() { |
| synchronized (mLock) { |
| for (int i = 0; i < mTrackedJobs.size(); i++) { |
| final JobStatus js = mTrackedJobs.get(i); |
| if (js.isReady()) { |
| if (DEBUG) { |
| Slog.d(TAG, "Running " + js + " due to network activity."); |
| } |
| mStateChangedListener.onRunJobNow(js); |
| } |
| } |
| } |
| } |
| |
| private final NetworkCallback mNetworkCallback = new NetworkCallback() { |
| @Override |
| public void onCapabilitiesChanged(Network network, NetworkCapabilities networkCapabilities) { |
| if (DEBUG) { |
| Slog.v(TAG, "onCapabilitiesChanged() : " + networkCapabilities); |
| } |
| updateTrackedJobs(-1, networkCapabilities); |
| } |
| |
| @Override |
| public void onLost(Network network) { |
| if (DEBUG) { |
| Slog.v(TAG, "Network lost"); |
| } |
| updateTrackedJobs(-1, null); |
| } |
| }; |
| |
| private final INetworkPolicyListener mNetPolicyListener = new INetworkPolicyListener.Stub() { |
| @Override |
| public void onUidRulesChanged(int uid, int uidRules) { |
| if (DEBUG) { |
| Slog.v(TAG, "Uid rules changed for " + uid); |
| } |
| updateTrackedJobs(uid, null); |
| } |
| |
| @Override |
| public void onMeteredIfacesChanged(String[] meteredIfaces) { |
| // We track this via our NetworkCallback |
| } |
| |
| @Override |
| public void onRestrictBackgroundChanged(boolean restrictBackground) { |
| if (DEBUG) { |
| Slog.v(TAG, "Background restriction change to " + restrictBackground); |
| } |
| updateTrackedJobs(-1, null); |
| } |
| |
| @Override |
| public void onUidPoliciesChanged(int uid, int uidPolicies) { |
| if (DEBUG) { |
| Slog.v(TAG, "Uid policy changed for " + uid); |
| } |
| updateTrackedJobs(uid, null); |
| } |
| }; |
| |
| @Override |
| public void dumpControllerStateLocked(PrintWriter pw, int filterUid) { |
| pw.print("Connectivity: connected="); |
| pw.print(mConnected); |
| pw.print(" validated="); |
| pw.println(mValidated); |
| pw.print("Tracking "); |
| pw.print(mTrackedJobs.size()); |
| pw.println(":"); |
| for (int i = 0; i < mTrackedJobs.size(); i++) { |
| final JobStatus js = mTrackedJobs.get(i); |
| if (js.shouldDump(filterUid)) { |
| pw.print(" #"); |
| js.printUniqueId(pw); |
| pw.print(" from "); |
| UserHandle.formatUid(pw, js.getSourceUid()); |
| pw.print(": C="); pw.print(js.needsAnyConnectivity()); |
| pw.print(": M="); pw.print(js.needsMeteredConnectivity()); |
| pw.print(": UM="); pw.print(js.needsUnmeteredConnectivity()); |
| pw.print(": NR="); pw.println(js.needsNonRoamingConnectivity()); |
| } |
| } |
| } |
| } |