321 lines
11 KiB
Java
321 lines
11 KiB
Java
/*
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* Copyright (C) 2009 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.email.service;
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import com.android.email.mail.MessagingException;
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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.Bundle;
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import android.os.Debug;
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import android.os.IBinder;
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import android.os.RemoteException;
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import android.util.Log;
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/**
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* The EmailServiceProxy class provides a simple interface for the UI to call into the various
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* EmailService classes (e.g. SyncManager for EAS). It wraps the service connect/disconnect
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* process so that the caller need not be concerned with it.
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*
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* Use the class like this:
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* new EmailServiceClass(context, class).loadAttachment(attachmentId, callback)
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*
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* Methods without a return value return immediately (i.e. are asynchronous); methods with a
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* return value wait for a result from the Service (i.e. they should not be called from the UI
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* thread) with a default timeout of 30 seconds (settable)
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*
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* An EmailServiceProxy object cannot be reused (trying to do so generates a RemoteException)
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*/
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public class EmailServiceProxy implements IEmailService {
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private static final boolean DEBUG_PROXY = false; // DO NOT CHECK THIS IN SET TO TRUE
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private static final String TAG = "EmailServiceProxy";
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public static final String AUTO_DISCOVER_BUNDLE_ERROR_CODE = "autodiscover_error_code";
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public static final String AUTO_DISCOVER_BUNDLE_HOST_AUTH = "autodiscover_host_auth";
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private Context mContext;
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private Class<?> mClass;
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private IEmailServiceCallback mCallback;
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private Runnable mRunnable;
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private ServiceConnection mSyncManagerConnection = new EmailServiceConnection ();
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private IEmailService mService = null;
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private Object mReturn = null;
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private int mTimeout = 30;
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private boolean mDead = false;
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public EmailServiceProxy(Context _context, Class<?> _class) {
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mContext = _context;
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mClass = _class;
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// Proxy calls have a timeout, and this can cause failures while debugging due to the
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// far slower execution speed. In particular, validate calls fail regularly with ssl
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// connections at the default timeout (30 seconds)
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if (Debug.isDebuggerConnected()) {
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mTimeout <<= 2;
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}
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}
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public EmailServiceProxy(Context _context, Class<?> _class, IEmailServiceCallback _callback) {
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mContext = _context;
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mClass = _class;
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mCallback = _callback;
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// See comment above
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if (Debug.isDebuggerConnected()) {
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mTimeout <<= 2;
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}
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}
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class EmailServiceConnection implements ServiceConnection {
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public void onServiceConnected(ComponentName name, IBinder binder) {
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mService = IEmailService.Stub.asInterface(binder);
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if (DEBUG_PROXY) {
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Log.v(TAG, "Service " + mClass.getSimpleName() + " connected");
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}
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// Run our task on a new thread
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new Thread(new Runnable() {
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public void run() {
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runTask();
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}}).start();
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}
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public void onServiceDisconnected(ComponentName name) {
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if (DEBUG_PROXY) {
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Log.v(TAG, "Service " + mClass.getSimpleName() + " disconnected");
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}
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}
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}
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public EmailServiceProxy setTimeout(int secs) {
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mTimeout = secs;
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return this;
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}
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private void runTask() {
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Thread thread = new Thread(mRunnable);
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thread.start();
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try {
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thread.join();
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} catch (InterruptedException e) {
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}
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try {
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mContext.unbindService(mSyncManagerConnection);
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} catch (IllegalArgumentException e) {
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// This can happen if the user ended the activity that was using the service
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// This is harmless, but we've got to catch it
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}
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mDead = true;
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synchronized(mSyncManagerConnection) {
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if (DEBUG_PROXY) {
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Log.v(TAG, "Service task completed; disconnecting");
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}
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mSyncManagerConnection.notify();
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}
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}
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private void setTask(Runnable runnable) throws RemoteException {
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if (mDead) {
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throw new RemoteException();
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}
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mRunnable = runnable;
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if (DEBUG_PROXY) {
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Log.v(TAG, "Service " + mClass.getSimpleName() + " bind requested");
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}
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mContext.bindService(new Intent(mContext, mClass), mSyncManagerConnection,
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Context.BIND_AUTO_CREATE);
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}
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public void waitForCompletion() {
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synchronized (mSyncManagerConnection) {
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long time = System.currentTimeMillis();
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try {
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if (DEBUG_PROXY) {
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Log.v(TAG, "Waiting for task to complete...");
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}
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mSyncManagerConnection.wait(mTimeout * 1000L);
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} catch (InterruptedException e) {
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// Can be ignored safely
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}
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if (DEBUG_PROXY) {
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Log.v(TAG, "Wait finished in " + (System.currentTimeMillis() - time) + "ms");
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}
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}
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}
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public void loadAttachment(final long attachmentId, final String destinationFile,
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final String contentUriString) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.loadAttachment(attachmentId, destinationFile, contentUriString);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void startSync(final long mailboxId) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.startSync(mailboxId);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void stopSync(final long mailboxId) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.stopSync(mailboxId);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public int validate(final String protocol, final String host, final String userName,
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final String password, final int port, final boolean ssl,
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final boolean trustCertificates) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mReturn = mService.validate(protocol, host, userName, password, port, ssl,
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trustCertificates);
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} catch (RemoteException e) {
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}
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}
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});
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waitForCompletion();
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if (mReturn == null) {
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return MessagingException.UNSPECIFIED_EXCEPTION;
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} else {
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Log.v(TAG, "validate returns " + mReturn);
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return (Integer)mReturn;
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}
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}
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public Bundle autoDiscover(final String userName, final String password)
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throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mReturn = mService.autoDiscover(userName, password);
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} catch (RemoteException e) {
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}
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}
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});
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waitForCompletion();
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if (mReturn == null) {
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return null;
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} else {
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Bundle bundle = (Bundle) mReturn;
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Log.v(TAG, "autoDiscover returns " + bundle.getInt(AUTO_DISCOVER_BUNDLE_ERROR_CODE));
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return bundle;
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}
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}
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public void updateFolderList(final long accountId) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.updateFolderList(accountId);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void setLogging(final int on) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.setLogging(on);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void setCallback(final IEmailServiceCallback cb) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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mService.setCallback(cb);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void hostChanged(final long accountId) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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mService.hostChanged(accountId);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void sendMeetingResponse(final long messageId, final int response) throws RemoteException {
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setTask(new Runnable () {
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public void run() {
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try {
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if (mCallback != null) mService.setCallback(mCallback);
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mService.sendMeetingResponse(messageId, response);
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} catch (RemoteException e) {
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}
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}
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});
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}
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public void loadMore(long messageId) throws RemoteException {
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// TODO Auto-generated method stub
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}
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public boolean createFolder(long accountId, String name) throws RemoteException {
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return false;
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}
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public boolean deleteFolder(long accountId, String name) throws RemoteException {
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return false;
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}
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public boolean renameFolder(long accountId, String oldName, String newName)
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throws RemoteException {
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return false;
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}
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public IBinder asBinder() {
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return null;
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}
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}
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