RefreshManager.java revision e357f5879187124c7af5c2ece5d7d3e4f60f07d2
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.email; 18 19import com.android.email.mail.MessagingException; 20 21import android.content.Context; 22import android.os.Handler; 23import android.util.Log; 24 25import java.security.InvalidParameterException; 26import java.util.ArrayList; 27import java.util.Collection; 28import java.util.HashMap; 29 30/** 31 * Class that handles "refresh" (and "send pending messages" for outboxes) related functionalities. 32 * 33 * <p>This class is responsible for two things: 34 * <ul> 35 * <li>Taking refresh requests of mailbox-lists and message-lists and the "send outgoing 36 * messages" requests from UI, and calls appropriate methods of {@link Controller}. 37 * Note at this point the timer-based refresh 38 * (by {@link com.android.email.service.MailService}) uses {@link Controller} directly. 39 * <li>Keeping track of which mailbox list/message list is actually being refreshed. 40 * </ul> 41 * Refresh requests will be ignored if a request to the same target is already requested, or is 42 * already being refreshed. 43 * 44 * <p>Conceptually it can be a part of {@link Controller}, but extracted for easy testing. 45 * 46 * (All public methods must be called on the UI thread. All callbacks will be called on the UI 47 * thread.) 48 */ 49public class RefreshManager { 50 private static final boolean DEBUG_CALLBACK_LOG = true; 51 private static final long MAILBOX_AUTO_REFRESH_INTERVAL = 5 * 60 * 1000; // in milliseconds 52 53 private static RefreshManager sInstance; 54 55 private final Clock mClock; 56 private final Context mContext; 57 private final Controller mController; 58 private final Controller.Result mControllerResult; 59 60 /** Last error message */ 61 private String mErrorMessage; 62 63 public interface Listener { 64 public void onRefreshStatusChanged(long accountId, long mailboxId); 65 public void onMessagingError(long accountId, long mailboxId, String message); 66 } 67 68 private final ArrayList<Listener> mListeners = new ArrayList<Listener>(); 69 70 /** 71 * Status of a mailbox list/message list. 72 */ 73 /* package */ static class Status { 74 /** 75 * True if a refresh of the mailbox is requested, and not finished yet. 76 */ 77 private boolean mIsRefreshRequested; 78 79 /** 80 * True if the mailbox is being refreshed. 81 * 82 * Set true when {@link #onRefreshRequested} is called, i.e. refresh is requested by UI. 83 * Note refresh can occur without a request from UI as well (e.g. timer based refresh). 84 * In which case, {@link #mIsRefreshing} will be true with {@link #mIsRefreshRequested} 85 * being false. 86 */ 87 private boolean mIsRefreshing; 88 89 private long mLastRefreshTime; 90 91 public boolean isRefreshing() { 92 return mIsRefreshRequested || mIsRefreshing; 93 } 94 95 public boolean canRefresh() { 96 return !isRefreshing(); 97 } 98 99 public void onRefreshRequested() { 100 mIsRefreshRequested = true; 101 } 102 103 public long getLastRefreshTime() { 104 return mLastRefreshTime; 105 } 106 107 public void onCallback(MessagingException exception, int progress, Clock clock) { 108 if (exception == null && progress == 0) { 109 // Refresh started 110 mIsRefreshing = true; 111 } else if (exception != null || progress == 100) { 112 // Refresh finished 113 mIsRefreshing = false; 114 mIsRefreshRequested = false; 115 mLastRefreshTime = clock.getTime(); 116 } 117 } 118 } 119 120 /** 121 * Map of accounts/mailboxes to {@link Status}. 122 */ 123 private static class RefreshStatusMap { 124 private final HashMap<Long, Status> mMap = new HashMap<Long, Status>(); 125 126 public Status get(long id) { 127 Status s = mMap.get(id); 128 if (s == null) { 129 s = new Status(); 130 mMap.put(id, s); 131 } 132 return s; 133 } 134 135 public boolean isRefreshingAny() { 136 for (Status s : mMap.values()) { 137 if (s.isRefreshing()) { 138 return true; 139 } 140 } 141 return false; 142 } 143 } 144 145 private final RefreshStatusMap mMailboxListStatus = new RefreshStatusMap(); 146 private final RefreshStatusMap mMessageListStatus = new RefreshStatusMap(); 147 private final RefreshStatusMap mOutboxStatus = new RefreshStatusMap(); 148 149 /** 150 * @return the singleton instance. 151 */ 152 public static synchronized RefreshManager getInstance(Context context) { 153 if (sInstance == null) { 154 sInstance = new RefreshManager(context, Controller.getInstance(context), 155 Clock.INSTANCE, new Handler()); 156 } 157 return sInstance; 158 } 159 160 protected RefreshManager(Context context, Controller controller, Clock clock, 161 Handler handler) { 162 mClock = clock; 163 mContext = context.getApplicationContext(); 164 mController = controller; 165 mControllerResult = new ControllerResultUiThreadWrapper<ControllerResult>( 166 handler, new ControllerResult()); 167 mController.addResultCallback(mControllerResult); 168 } 169 170 /** 171 * MUST be called for mock instances. (The actual instance is a singleton, so no cleanup 172 * is necessary.) 173 */ 174 public void cleanUpForTest() { 175 mController.removeResultCallback(mControllerResult); 176 } 177 178 public void registerListener(Listener listener) { 179 if (listener == null) { 180 throw new InvalidParameterException(); 181 } 182 mListeners.add(listener); 183 } 184 185 public void unregisterListener(Listener listener) { 186 if (listener == null) { 187 throw new InvalidParameterException(); 188 } 189 mListeners.remove(listener); 190 } 191 192 /** 193 * Refresh the mailbox list of an account. 194 */ 195 public boolean refreshMailboxList(long accountId) { 196 final Status status = mMailboxListStatus.get(accountId); 197 if (!status.canRefresh()) return false; 198 199 Log.i(Email.LOG_TAG, "refreshMailboxList " + accountId); 200 status.onRefreshRequested(); 201 notifyRefreshStatusChanged(accountId, -1); 202 mController.updateMailboxList(accountId); 203 return true; 204 } 205 206 public boolean isMailboxStale(long mailboxId) { 207 return mClock.getTime() >= (mMessageListStatus.get(mailboxId).getLastRefreshTime() 208 + MAILBOX_AUTO_REFRESH_INTERVAL); 209 } 210 211 /** 212 * Refresh messages in a mailbox. 213 */ 214 public boolean refreshMessageList(long accountId, long mailboxId) { 215 return refreshMessageList(accountId, mailboxId, false); 216 } 217 218 /** 219 * "load more messages" in a mailbox. 220 */ 221 public boolean loadMoreMessages(long accountId, long mailboxId) { 222 return refreshMessageList(accountId, mailboxId, true); 223 } 224 225 private boolean refreshMessageList(long accountId, long mailboxId, boolean loadMoreMessages) { 226 final Status status = mMessageListStatus.get(mailboxId); 227 if (!status.canRefresh()) return false; 228 229 Log.i(Email.LOG_TAG, "refreshMessageList " + accountId + ", " + mailboxId + ", " 230 + loadMoreMessages); 231 status.onRefreshRequested(); 232 notifyRefreshStatusChanged(accountId, mailboxId); 233 mController.updateMailbox(accountId, mailboxId); 234 return true; 235 } 236 237 /** 238 * Send pending messages. 239 */ 240 public boolean sendPendingMessages(long accountId) { 241 final Status status = mOutboxStatus.get(accountId); 242 if (!status.canRefresh()) return false; 243 244 Log.i(Email.LOG_TAG, "sendPendingMessages " + accountId); 245 status.onRefreshRequested(); 246 notifyRefreshStatusChanged(accountId, -1); 247 mController.sendPendingMessages(accountId); 248 return true; 249 } 250 251 /** 252 * Call {@link #sendPendingMessages} for all accounts. 253 */ 254 public void sendPendingMessagesForAllAccounts() { 255 Log.i(Email.LOG_TAG, "sendPendingMessagesForAllAccounts"); 256 new SendPendingMessagesForAllAccountsImpl().execute(); 257 } 258 259 private class SendPendingMessagesForAllAccountsImpl extends Utility.ForEachAccount { 260 public SendPendingMessagesForAllAccountsImpl() { 261 super(mContext); 262 } 263 264 @Override 265 protected void performAction(long accountId) { 266 sendPendingMessages(accountId); 267 } 268 } 269 270 public long getLastMailboxListRefreshTime(long accountId) { 271 return mMailboxListStatus.get(accountId).getLastRefreshTime(); 272 } 273 274 public long getLastMessageListRefreshTime(long mailboxId) { 275 return mMessageListStatus.get(mailboxId).getLastRefreshTime(); 276 } 277 278 public long getLastSendMessageTime(long accountId) { 279 return mOutboxStatus.get(accountId).getLastRefreshTime(); 280 } 281 282 public boolean isMailboxListRefreshing(long accountId) { 283 return mMailboxListStatus.get(accountId).isRefreshing(); 284 } 285 286 public boolean isMessageListRefreshing(long mailboxId) { 287 return mMessageListStatus.get(mailboxId).isRefreshing(); 288 } 289 290 public boolean isSendingMessage(long accountId) { 291 return mOutboxStatus.get(accountId).isRefreshing(); 292 } 293 294 public boolean isRefreshingAnyMailboxList() { 295 return mMailboxListStatus.isRefreshingAny(); 296 } 297 298 public boolean isRefreshingAnyMessageList() { 299 return mMessageListStatus.isRefreshingAny(); 300 } 301 302 public boolean isSendingAnyMessage() { 303 return mOutboxStatus.isRefreshingAny(); 304 } 305 306 public boolean isRefreshingOrSendingAny() { 307 return isRefreshingAnyMailboxList() || isRefreshingAnyMessageList() 308 || isSendingAnyMessage(); 309 } 310 311 public String getErrorMessage() { 312 return mErrorMessage; 313 } 314 315 private void notifyRefreshStatusChanged(long accountId, long mailboxId) { 316 for (Listener l : mListeners) { 317 l.onRefreshStatusChanged(accountId, mailboxId); 318 } 319 } 320 321 private void reportError(long accountId, long mailboxId, String errorMessage) { 322 mErrorMessage = errorMessage; 323 for (Listener l : mListeners) { 324 l.onMessagingError(accountId, mailboxId, mErrorMessage); 325 } 326 } 327 328 /* package */ Collection<Listener> getListenersForTest() { 329 return mListeners; 330 } 331 332 /* package */ Status getMailboxListStatusForTest(long accountId) { 333 return mMailboxListStatus.get(accountId); 334 } 335 336 /* package */ Status getMessageListStatusForTest(long mailboxId) { 337 return mMessageListStatus.get(mailboxId); 338 } 339 340 /* package */ Status getOutboxStatusForTest(long acountId) { 341 return mOutboxStatus.get(acountId); 342 } 343 344 private class ControllerResult extends Controller.Result { 345 private boolean mSendMailExceptionReported = false; 346 347 private String exceptionToString(MessagingException exception) { 348 if (exception == null) { 349 return "(no exception)"; 350 } else { 351 return exception.getUiErrorMessage(mContext); 352 } 353 } 354 355 /** 356 * Callback for mailbox list refresh. 357 */ 358 @Override 359 public void updateMailboxListCallback(MessagingException exception, long accountId, 360 int progress) { 361 if (Email.DEBUG && DEBUG_CALLBACK_LOG) { 362 Log.d(Email.LOG_TAG, "updateMailboxListCallback " + accountId + ", " + progress 363 + ", " + exceptionToString(exception)); 364 } 365 mMailboxListStatus.get(accountId).onCallback(exception, progress, mClock); 366 if (exception != null) { 367 reportError(accountId, -1, exception.getUiErrorMessage(mContext)); 368 } 369 notifyRefreshStatusChanged(accountId, -1); 370 } 371 372 /** 373 * Callback for explicit (user-driven) mailbox refresh. 374 */ 375 @Override 376 public void updateMailboxCallback(MessagingException exception, long accountId, 377 long mailboxId, int progress, int dontUseNumNewMessages) { 378 if (Email.DEBUG && DEBUG_CALLBACK_LOG) { 379 Log.d(Email.LOG_TAG, "updateMailboxCallback " + accountId + ", " 380 + mailboxId + ", " + progress + ", " + exceptionToString(exception)); 381 } 382 updateMailboxCallbackInternal(exception, accountId, mailboxId, progress, 0); 383 } 384 385 /** 386 * Callback for implicit (timer-based) mailbox refresh. 387 * 388 * Do the same as {@link #updateMailboxCallback}. 389 * TODO: Figure out if it's really okay to do the same as updateMailboxCallback. 390 * If both the explicit refresh and the implicit refresh can run at the same time, 391 * we need to keep track of their status separately. 392 */ 393 @Override 394 public void serviceCheckMailCallback( 395 MessagingException exception, long accountId, long mailboxId, int progress, 396 long tag) { 397 if (Email.DEBUG && DEBUG_CALLBACK_LOG) { 398 Log.d(Email.LOG_TAG, "serviceCheckMailCallback " + accountId + ", " 399 + mailboxId + ", " + progress + ", " + exceptionToString(exception)); 400 } 401 updateMailboxCallbackInternal(exception, accountId, mailboxId, progress, 0); 402 } 403 404 private void updateMailboxCallbackInternal(MessagingException exception, long accountId, 405 long mailboxId, int progress, int dontUseNumNewMessages) { 406 // Don't use dontUseNumNewMessages. serviceCheckMailCallback() don't set it. 407 mMessageListStatus.get(mailboxId).onCallback(exception, progress, mClock); 408 if (exception != null) { 409 reportError(accountId, mailboxId, exception.getUiErrorMessage(mContext)); 410 } 411 notifyRefreshStatusChanged(accountId, mailboxId); 412 } 413 414 415 /** 416 * Send message progress callback. 417 * 418 * This callback is overly overloaded: 419 * 420 * First, we get this. 421 * result == null, messageId == -1, progress == 0: start batch send 422 * 423 * Then we get these callbacks per message. 424 * (Exchange backend may skip "start sending one message".) 425 * result == null, messageId == xx, progress == 0: start sending one message 426 * result == xxxx, messageId == xx, progress == 0; failed sending one message 427 * 428 * Finally we get this. 429 * result == null, messageId == -1, progres == 100; finish sending batch 430 * 431 * So, let's just report the first exception we get, and ignore the rest. 432 */ 433 @Override 434 public void sendMailCallback(MessagingException exception, long accountId, long messageId, 435 int progress) { 436 if (Email.DEBUG && DEBUG_CALLBACK_LOG) { 437 Log.d(Email.LOG_TAG, "sendMailCallback " + accountId + ", " 438 + messageId + ", " + progress + ", " + exceptionToString(exception)); 439 } 440 if (progress == 0 && messageId == -1) { 441 mSendMailExceptionReported = false; 442 } 443 if (messageId == -1) { 444 // Update the status only for the batch start/end. 445 // (i.e. don't report for each message.) 446 mOutboxStatus.get(accountId).onCallback(exception, progress, mClock); 447 notifyRefreshStatusChanged(accountId, -1); 448 } 449 if (exception != null && !mSendMailExceptionReported) { 450 // Only the first error in a batch will be reported. 451 mSendMailExceptionReported = true; 452 reportError(accountId, messageId, exception.getUiErrorMessage(mContext)); 453 } 454 } 455 } 456} 457