8c43376ea8
1. Added notifications for a queued print job, for a started print job,
for ongoing canceling a print job, and for a failed print job. The
notifications for queued and started state have a cancel action. The
notification for failed print job has a cancel and a restart action.
2. Propagating failure message from the print service to the notifications.
3. PrintJobConfigActivity was not setting the initial value for the
print job copies and was not updating the UI immediately after creation.
4. Refactored PrintJobConfigActivity to avoid using the hack to avoid
reaction for item selection change in a spinner for an event that
happened before the callback was registered.
5. Removed the label attribute from PrinterInfo and now PrinterId is
composed of the printer name and the service component name. This
is nice since for restarting print jobs we do not need to store
information about the printer except the printer id which is
already part of the PrintJobInfo's data. Also the printer name
is not expected to change anyway.
6. Allowing cancellation of a queued print job. Also no print job is
cancelled without asking the managing print service to do that.
Before we were immediately canceling print jobs in queued state
but it was possible for a buggy print service to not set the
print job state to started before starting to do expensive work
that will not be canceled.
7. PrintServiceInfo was throwing an exception the the meta-data
XML for the print service was not well-formed which would crash
the system process. Now we just ignore not well-formed meta-data.
8. Removed unused permissions from the PrintSpooler's manifest.
Change-Id: Iba2dd14b487f56e137b90d1da17c3033422ab5e6
645 lines
22 KiB
Java
645 lines
22 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.print;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.ServiceConnection;
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import android.os.Binder;
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import android.os.Build;
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import android.os.IBinder;
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import android.os.ParcelFileDescriptor;
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import android.os.RemoteException;
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import android.os.SystemClock;
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import android.os.UserHandle;
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import android.print.IPrintClient;
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import android.print.IPrintDocumentAdapter;
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import android.print.IPrintSpooler;
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import android.print.IPrintSpoolerCallbacks;
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import android.print.IPrintSpoolerClient;
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import android.print.IPrinterDiscoveryObserver;
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import android.print.PrintAttributes;
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import android.print.PrintJobInfo;
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import android.print.PrinterId;
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import android.util.Slog;
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import android.util.TimedRemoteCaller;
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import libcore.io.IoUtils;
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import java.lang.ref.WeakReference;
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import java.util.List;
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import java.util.concurrent.TimeoutException;
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/**
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* This represents the remote print spooler as a local object to the
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* PrintManagerSerivce. It is responsible to connecting to the remote
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* spooler if needed, to make the timed remote calls, to handle
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* remote exceptions, and to bind/unbind to the remote instance as
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* needed.
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*/
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final class RemotePrintSpooler {
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private static final String LOG_TAG = "RemotePrintSpooler";
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private static final boolean DEBUG = true && Build.IS_DEBUGGABLE;
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private static final long BIND_SPOOLER_SERVICE_TIMEOUT = 10000;
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private final Object mLock = new Object();
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private final GetPrintJobInfosCaller mGetPrintJobInfosCaller = new GetPrintJobInfosCaller();
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private final CreatePrintJobCaller mCreatePrintJobCaller = new CreatePrintJobCaller();
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private final GetPrintJobInfoCaller mGetPrintJobInfoCaller = new GetPrintJobInfoCaller();
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private final SetPrintJobStateCaller mSetPrintJobStatusCaller = new SetPrintJobStateCaller();
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private final SetPrintJobTagCaller mSetPrintJobTagCaller = new SetPrintJobTagCaller();
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private final ServiceConnection mServiceConnection = new MyServiceConnection();
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private final Context mContext;
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private final UserHandle mUserHandle;
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private final PrintSpoolerClient mClient;
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private final Intent mIntent;
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private final PrintSpoolerCallbacks mCallbacks;
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private IPrintSpooler mRemoteInstance;
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private boolean mDestroyed;
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private boolean mCanUnbind;
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public static interface PrintSpoolerCallbacks {
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public void onPrintJobQueued(PrintJobInfo printJob);
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public void onStartPrinterDiscovery(IPrinterDiscoveryObserver observer);
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public void onStopPrinterDiscovery();
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public void onAllPrintJobsForServiceHandled(ComponentName printService);
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public void onRequestUpdatePrinters(List<PrinterId> printerIds);
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}
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public RemotePrintSpooler(Context context, int userId,
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PrintSpoolerCallbacks callbacks) {
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mContext = context;
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mUserHandle = new UserHandle(userId);
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mCallbacks = callbacks;
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mClient = new PrintSpoolerClient(this);
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mIntent = new Intent();
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mIntent.setComponent(new ComponentName("com.android.printspooler",
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"com.android.printspooler.PrintSpoolerService"));
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}
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public final List<PrintJobInfo> getPrintJobInfos(ComponentName componentName, int state,
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int appId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] getPrintJobInfos()");
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}
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try {
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return mGetPrintJobInfosCaller.getPrintJobInfos(getRemoteInstanceLazy(),
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componentName, state, appId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error getting print jobs.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error getting print jobs.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return null;
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}
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public final PrintJobInfo createPrintJob(String printJobName, IPrintClient client,
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IPrintDocumentAdapter documentAdapter, PrintAttributes attributes, int appId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] createPrintJob()");
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}
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try {
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return mCreatePrintJobCaller.createPrintJob(getRemoteInstanceLazy(),
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printJobName, client, documentAdapter, attributes, appId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error creating print job.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error creating print job.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return null;
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}
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public final void writePrintJobData(ParcelFileDescriptor fd, int printJobId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] writePrintJobData()");
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}
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try {
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getRemoteInstanceLazy().writePrintJobData(fd, printJobId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error writing print job data.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error writing print job data.", te);
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} finally {
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// We passed the file descriptor across and now the other
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// side is responsible to close it, so close the local copy.
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IoUtils.closeQuietly(fd);
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final PrintJobInfo getPrintJobInfo(int printJobId, int appId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] getPrintJobInfo()");
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}
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try {
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return mGetPrintJobInfoCaller.getPrintJobInfo(getRemoteInstanceLazy(),
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printJobId, appId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error getting print job info.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error getting print job info.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return null;
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}
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public final boolean setPrintJobState(int printJobId, int state, CharSequence error) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] setPrintJobState()");
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}
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try {
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return mSetPrintJobStatusCaller.setPrintJobState(getRemoteInstanceLazy(),
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printJobId, state, error);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error setting print job state.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error setting print job state.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return false;
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}
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public final boolean setPrintJobTag(int printJobId, String tag) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] setPrintJobTag()");
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}
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try {
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return mSetPrintJobTagCaller.setPrintJobTag(getRemoteInstanceLazy(),
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printJobId, tag);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error setting print job tag.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error setting print job tag.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return false;
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}
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public final void notifyClientForActivteJobs() {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier()
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+ "] notifyClientForActivteJobs()");
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}
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try {
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getRemoteInstanceLazy().notifyClientForActivteJobs();
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error asking for active print job notification.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error asking for active print job notification.", te);
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} finally {
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final void destroy() {
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throwIfCalledOnMainThread();
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] destroy()");
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}
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synchronized (mLock) {
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throwIfDestroyedLocked();
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unbindLocked();
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mDestroyed = true;
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mCanUnbind = false;
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}
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}
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private void onAllPrintJobsHandled() {
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synchronized (mLock) {
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throwIfDestroyedLocked();
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unbindLocked();
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}
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}
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private IPrintSpooler getRemoteInstanceLazy() throws TimeoutException {
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synchronized (mLock) {
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if (mRemoteInstance != null) {
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return mRemoteInstance;
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}
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bindLocked();
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return mRemoteInstance;
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}
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}
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private void bindLocked() throws TimeoutException {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] bindLocked()");
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}
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mContext.bindServiceAsUser(mIntent, mServiceConnection,
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Context.BIND_AUTO_CREATE, mUserHandle);
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final long startMillis = SystemClock.uptimeMillis();
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while (true) {
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if (mRemoteInstance != null) {
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break;
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}
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final long elapsedMillis = SystemClock.uptimeMillis() - startMillis;
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final long remainingMillis = BIND_SPOOLER_SERVICE_TIMEOUT - elapsedMillis;
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if (remainingMillis <= 0) {
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throw new TimeoutException("Cannot get spooler!");
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}
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try {
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mLock.wait(remainingMillis);
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} catch (InterruptedException ie) {
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/* ignore */
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}
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}
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mCanUnbind = true;
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mLock.notifyAll();
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}
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private void unbindLocked() {
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while (true) {
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if (mCanUnbind) {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] unbindLocked()");
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}
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clearClientLocked();
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mRemoteInstance = null;
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mContext.unbindService(mServiceConnection);
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return;
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}
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try {
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mLock.wait();
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} catch (InterruptedException ie) {
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/* ignore */
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}
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}
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}
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private void setClientLocked() {
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try {
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mRemoteInstance.setClient(mClient);
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} catch (RemoteException re) {
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Slog.d(LOG_TAG, "Error setting print spooler client", re);
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}
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}
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private void clearClientLocked() {
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try {
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mRemoteInstance.setClient(null);
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} catch (RemoteException re) {
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Slog.d(LOG_TAG, "Error clearing print spooler client", re);
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}
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}
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private void throwIfDestroyedLocked() {
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if (mDestroyed) {
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throw new IllegalStateException("Cannot interact with a destroyed instance.");
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}
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}
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private void throwIfCalledOnMainThread() {
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if (Thread.currentThread() == mContext.getMainLooper().getThread()) {
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throw new RuntimeException("Cannot invoke on the main thread");
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}
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}
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private final class MyServiceConnection implements ServiceConnection {
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@Override
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public void onServiceConnected(ComponentName name, IBinder service) {
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synchronized (mLock) {
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mRemoteInstance = IPrintSpooler.Stub.asInterface(service);
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setClientLocked();
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mLock.notifyAll();
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}
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}
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@Override
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public void onServiceDisconnected(ComponentName name) {
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synchronized (mLock) {
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clearClientLocked();
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mRemoteInstance = null;
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}
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}
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}
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private static final class GetPrintJobInfosCaller
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extends TimedRemoteCaller<List<PrintJobInfo>> {
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private final IPrintSpoolerCallbacks mCallback;
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public GetPrintJobInfosCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onGetPrintJobInfosResult(List<PrintJobInfo> printJobs, int sequence) {
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onRemoteMethodResult(printJobs, sequence);
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}
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};
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}
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public List<PrintJobInfo> getPrintJobInfos(IPrintSpooler target,
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ComponentName componentName, int state, int appId)
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throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.getPrintJobInfos(mCallback, componentName, state, appId, sequence);
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return getResultTimed(sequence);
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}
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}
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private static final class CreatePrintJobCaller extends TimedRemoteCaller<PrintJobInfo> {
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private final IPrintSpoolerCallbacks mCallback;
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public CreatePrintJobCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onCreatePrintJobResult(PrintJobInfo printJob, int sequence) {
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onRemoteMethodResult(printJob, sequence);
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}
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};
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}
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public PrintJobInfo createPrintJob(IPrintSpooler target, String printJobName,
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IPrintClient client, IPrintDocumentAdapter documentAdapter,
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PrintAttributes attributes, int appId) throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.createPrintJob(printJobName, client, documentAdapter, attributes,
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mCallback, appId, sequence);
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return getResultTimed(sequence);
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}
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}
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private static final class GetPrintJobInfoCaller extends TimedRemoteCaller<PrintJobInfo> {
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private final IPrintSpoolerCallbacks mCallback;
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public GetPrintJobInfoCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onGetPrintJobInfoResult(PrintJobInfo printJob, int sequence) {
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onRemoteMethodResult(printJob, sequence);
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}
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};
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}
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public PrintJobInfo getPrintJobInfo(IPrintSpooler target, int printJobId,
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int appId) throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.getPrintJobInfo(printJobId, mCallback, appId, sequence);
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return getResultTimed(sequence);
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}
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}
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private static final class SetPrintJobStateCaller extends TimedRemoteCaller<Boolean> {
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private final IPrintSpoolerCallbacks mCallback;
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public SetPrintJobStateCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onSetPrintJobStateResult(boolean success, int sequence) {
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onRemoteMethodResult(success, sequence);
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}
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};
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}
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public boolean setPrintJobState(IPrintSpooler target, int printJobId,
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int status, CharSequence error) throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.setPrintJobState(printJobId, status, error, mCallback, sequence);
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return getResultTimed(sequence);
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}
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}
|
|
|
|
private static final class SetPrintJobTagCaller extends TimedRemoteCaller<Boolean> {
|
|
private final IPrintSpoolerCallbacks mCallback;
|
|
|
|
public SetPrintJobTagCaller() {
|
|
super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
|
|
mCallback = new BasePrintSpoolerServiceCallbacks() {
|
|
@Override
|
|
public void onSetPrintJobTagResult(boolean success, int sequence) {
|
|
onRemoteMethodResult(success, sequence);
|
|
}
|
|
};
|
|
}
|
|
|
|
public boolean setPrintJobTag(IPrintSpooler target, int printJobId,
|
|
String tag) throws RemoteException, TimeoutException {
|
|
final int sequence = onBeforeRemoteCall();
|
|
target.setPrintJobTag(printJobId, tag, mCallback, sequence);
|
|
return getResultTimed(sequence);
|
|
}
|
|
}
|
|
|
|
private static abstract class BasePrintSpoolerServiceCallbacks
|
|
extends IPrintSpoolerCallbacks.Stub {
|
|
@Override
|
|
public void onGetPrintJobInfosResult(List<PrintJobInfo> printJobIds, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onGetPrintJobInfoResult(PrintJobInfo printJob, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onCreatePrintJobResult(PrintJobInfo printJob, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onCancelPrintJobResult(boolean canceled, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onSetPrintJobStateResult(boolean success, int sequece) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onSetPrintJobTagResult(boolean success, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
}
|
|
|
|
private static final class PrintSpoolerClient extends IPrintSpoolerClient.Stub {
|
|
|
|
private final WeakReference<RemotePrintSpooler> mWeakSpooler;
|
|
|
|
public PrintSpoolerClient(RemotePrintSpooler spooler) {
|
|
mWeakSpooler = new WeakReference<RemotePrintSpooler>(spooler);
|
|
}
|
|
|
|
@Override
|
|
public void onPrintJobQueued(PrintJobInfo printJob) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onPrintJobQueued(printJob);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onAllPrintJobsForServiceHandled(ComponentName printService) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onAllPrintJobsForServiceHandled(printService);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onAllPrintJobsHandled() {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.onAllPrintJobsHandled();
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onStartPrinterDiscovery(IPrinterDiscoveryObserver observer) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onStartPrinterDiscovery(observer);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onStopPrinterDiscovery() {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onStopPrinterDiscovery();
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onRequestUpdatePrinters(List<PrinterId> printerIds) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onRequestUpdatePrinters(printerIds);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|