Files
frameworks_base/services/java/com/android/server/location/MockProvider.java
Dianne Hackborn 7e9f4eb260 Track client requests through location manager.
This fixes a problem where applications could ask the location
manager to do very heavy-weight things (like...  say... update
location every minute), which would get accounted against the
system instead of the application because ultimately it is the
system making the heavy calls (wake locks, etc).

To solve this, we introduce a new class WorkSource representing
the source of some work.  Wake locks and Wifi locks allow you
to set the source to use (but only if you are system code and thus
can get the permission to do so), which is what will be reported
to the battery stats until the actual caller.

For the initial implementation, the location manager keeps track
of all clients requesting periodic updates, and tells its providers
about them as a WorkSource param when setting their min update time.
The network location provider uses this to set the source on the
wake and wifi locks it acquires, when doing work because of the
update period.

This should also be used elsewhere, such as in the GPS provider,
but this is a good start.

Change-Id: I2b6ffafad9e90ecf15d7c502e2db675fd52ae3cf
2010-09-13 14:20:48 -07:00

235 lines
6.4 KiB
Java

/*
* Copyright (C) 2009 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.location;
import android.location.Criteria;
import android.location.ILocationManager;
import android.location.Location;
import android.location.LocationProvider;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.WorkSource;
import android.util.Log;
import android.util.PrintWriterPrinter;
import java.io.PrintWriter;
/**
* A mock location provider used by LocationManagerService to implement test providers.
*
* {@hide}
*/
public class MockProvider implements LocationProviderInterface {
private final String mName;
private final ILocationManager mLocationManager;
private final boolean mRequiresNetwork;
private final boolean mRequiresSatellite;
private final boolean mRequiresCell;
private final boolean mHasMonetaryCost;
private final boolean mSupportsAltitude;
private final boolean mSupportsSpeed;
private final boolean mSupportsBearing;
private final int mPowerRequirement;
private final int mAccuracy;
private final Location mLocation;
private int mStatus;
private long mStatusUpdateTime;
private final Bundle mExtras = new Bundle();
private boolean mHasLocation;
private boolean mHasStatus;
private boolean mEnabled;
private static final String TAG = "MockProvider";
public MockProvider(String name, ILocationManager locationManager,
boolean requiresNetwork, boolean requiresSatellite,
boolean requiresCell, boolean hasMonetaryCost, boolean supportsAltitude,
boolean supportsSpeed, boolean supportsBearing, int powerRequirement, int accuracy) {
mName = name;
mLocationManager = locationManager;
mRequiresNetwork = requiresNetwork;
mRequiresSatellite = requiresSatellite;
mRequiresCell = requiresCell;
mHasMonetaryCost = hasMonetaryCost;
mSupportsAltitude = supportsAltitude;
mSupportsBearing = supportsBearing;
mSupportsSpeed = supportsSpeed;
mPowerRequirement = powerRequirement;
mAccuracy = accuracy;
mLocation = new Location(name);
}
public String getName() {
return mName;
}
public void disable() {
mEnabled = false;
}
public void enable() {
mEnabled = true;
}
public boolean isEnabled() {
return mEnabled;
}
public int getStatus(Bundle extras) {
if (mHasStatus) {
extras.clear();
extras.putAll(mExtras);
return mStatus;
} else {
return LocationProvider.AVAILABLE;
}
}
public long getStatusUpdateTime() {
return mStatusUpdateTime;
}
public int getAccuracy() {
return mAccuracy;
}
public int getPowerRequirement() {
return mPowerRequirement;
}
public boolean hasMonetaryCost() {
return mHasMonetaryCost;
}
public boolean requiresCell() {
return mRequiresCell;
}
public boolean requiresNetwork() {
return mRequiresNetwork;
}
public boolean requiresSatellite() {
return mRequiresSatellite;
}
public boolean supportsAltitude() {
return mSupportsAltitude;
}
public boolean supportsBearing() {
return mSupportsBearing;
}
public boolean supportsSpeed() {
return mSupportsSpeed;
}
public boolean meetsCriteria(Criteria criteria) {
if ((criteria.getAccuracy() != Criteria.NO_REQUIREMENT) &&
(criteria.getAccuracy() < mAccuracy)) {
return false;
}
int criteriaPower = criteria.getPowerRequirement();
if ((criteriaPower != Criteria.NO_REQUIREMENT) &&
(criteriaPower < mPowerRequirement)) {
return false;
}
if (criteria.isAltitudeRequired() && !mSupportsAltitude) {
return false;
}
if (criteria.isSpeedRequired() && !mSupportsSpeed) {
return false;
}
if (criteria.isBearingRequired() && !mSupportsBearing) {
return false;
}
return true;
}
public void setLocation(Location l) {
mLocation.set(l);
mHasLocation = true;
try {
mLocationManager.reportLocation(mLocation, false);
} catch (RemoteException e) {
Log.e(TAG, "RemoteException calling reportLocation");
}
}
public void clearLocation() {
mHasLocation = false;
}
public void setStatus(int status, Bundle extras, long updateTime) {
mStatus = status;
mStatusUpdateTime = updateTime;
mExtras.clear();
if (extras != null) {
mExtras.putAll(extras);
}
mHasStatus = true;
}
public void clearStatus() {
mHasStatus = false;
mStatusUpdateTime = 0;
}
public String getInternalState() {
return null;
}
public void enableLocationTracking(boolean enable) {
}
public boolean requestSingleShotFix() {
return false;
}
public void setMinTime(long minTime, WorkSource ws) {
}
public void updateNetworkState(int state, NetworkInfo info) {
}
public void updateLocation(Location location) {
}
public boolean sendExtraCommand(String command, Bundle extras) {
return false;
}
public void addListener(int uid) {
}
public void removeListener(int uid) {
}
public void dump(PrintWriter pw, String prefix) {
pw.println(prefix + mName);
pw.println(prefix + "mHasLocation=" + mHasLocation);
pw.println(prefix + "mLocation:");
mLocation.dump(new PrintWriterPrinter(pw), prefix + " ");
pw.println(prefix + "mHasStatus=" + mHasStatus);
pw.println(prefix + "mStatus=" + mStatus);
pw.println(prefix + "mStatusUpdateTime=" + mStatusUpdateTime);
pw.println(prefix + "mExtras=" + mExtras);
}
}