1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/service/cloud_print/printer_job_handler.h" 6 7 #include "base/bind.h" 8 #include "base/bind_helpers.h" 9 #include "base/file_util.h" 10 #include "base/json/json_reader.h" 11 #include "base/md5.h" 12 #include "base/metrics/histogram.h" 13 #include "base/strings/stringprintf.h" 14 #include "base/strings/utf_string_conversions.h" 15 #include "base/values.h" 16 #include "chrome/common/cloud_print/cloud_print_constants.h" 17 #include "chrome/common/cloud_print/cloud_print_helpers.h" 18 #include "chrome/service/cloud_print/cloud_print_service_helpers.h" 19 #include "chrome/service/cloud_print/job_status_updater.h" 20 #include "grit/generated_resources.h" 21 #include "net/base/mime_util.h" 22 #include "net/http/http_response_headers.h" 23 #include "net/http/http_status_code.h" 24 #include "printing/printing_utils.h" 25 #include "ui/base/l10n/l10n_util.h" 26 #include "url/gurl.h" 27 28 namespace cloud_print { 29 30 namespace { 31 32 base::subtle::Atomic32 g_total_jobs_started = 0; 33 base::subtle::Atomic32 g_total_jobs_done = 0; 34 35 enum PrinterJobHandlerEvent { 36 JOB_HANDLER_CHECK_FOR_JOBS, 37 JOB_HANDLER_START, 38 JOB_HANDLER_PENDING_TASK, 39 JOB_HANDLER_PRINTER_UPDATE, 40 JOB_HANDLER_JOB_CHECK, 41 JOB_HANDLER_JOB_STARTED, 42 JOB_HANDLER_VALID_TICKET, 43 JOB_HANDLER_DATA, 44 JOB_HANDLER_SET_IN_PROGRESS, 45 JOB_HANDLER_SET_START_PRINTING, 46 JOB_HANDLER_START_SPOOLING, 47 JOB_HANDLER_SPOOLED, 48 JOB_HANDLER_JOB_COMPLETED, 49 JOB_HANDLER_INVALID_TICKET, 50 JOB_HANDLER_INVALID_DATA, 51 JOB_HANDLER_MAX, 52 }; 53 54 } // namespace 55 56 PrinterJobHandler::PrinterInfoFromCloud::PrinterInfoFromCloud() 57 : current_xmpp_timeout(0), pending_xmpp_timeout(0) { 58 } 59 60 PrinterJobHandler::PrinterJobHandler( 61 const printing::PrinterBasicInfo& printer_info, 62 const PrinterInfoFromCloud& printer_info_cloud, 63 const GURL& cloud_print_server_url, 64 PrintSystem* print_system, 65 Delegate* delegate) 66 : print_system_(print_system), 67 printer_info_(printer_info), 68 printer_info_cloud_(printer_info_cloud), 69 cloud_print_server_url_(cloud_print_server_url), 70 delegate_(delegate), 71 local_job_id_(-1), 72 next_json_data_handler_(NULL), 73 next_data_handler_(NULL), 74 server_error_count_(0), 75 print_thread_("Chrome_CloudPrintJobPrintThread"), 76 job_handler_message_loop_proxy_( 77 base::MessageLoopProxy::current()), 78 shutting_down_(false), 79 job_check_pending_(false), 80 printer_update_pending_(true), 81 task_in_progress_(false), 82 weak_ptr_factory_(this) { 83 } 84 85 bool PrinterJobHandler::Initialize() { 86 if (!print_system_->IsValidPrinter(printer_info_.printer_name)) 87 return false; 88 89 printer_watcher_ = print_system_->CreatePrinterWatcher( 90 printer_info_.printer_name); 91 printer_watcher_->StartWatching(this); 92 CheckForJobs(kJobFetchReasonStartup); 93 return true; 94 } 95 96 std::string PrinterJobHandler::GetPrinterName() const { 97 return printer_info_.printer_name; 98 } 99 100 void PrinterJobHandler::CheckForJobs(const std::string& reason) { 101 VLOG(1) << "CP_CONNECTOR: Checking for jobs" 102 << ", printer id: " << printer_info_cloud_.printer_id 103 << ", reason: " << reason 104 << ", task in progress: " << task_in_progress_; 105 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 106 JOB_HANDLER_CHECK_FOR_JOBS, JOB_HANDLER_MAX); 107 job_fetch_reason_ = reason; 108 job_check_pending_ = true; 109 if (!task_in_progress_) { 110 base::MessageLoop::current()->PostTask( 111 FROM_HERE, base::Bind(&PrinterJobHandler::Start, this)); 112 } 113 } 114 115 void PrinterJobHandler::Shutdown() { 116 VLOG(1) << "CP_CONNECTOR: Shutting down printer job handler" 117 << ", printer id: " << printer_info_cloud_.printer_id; 118 Reset(); 119 shutting_down_ = true; 120 while (!job_status_updater_list_.empty()) { 121 // Calling Stop() will cause the OnJobCompleted to be called which will 122 // remove the updater object from the list. 123 job_status_updater_list_.front()->Stop(); 124 } 125 } 126 127 // CloudPrintURLFetcher::Delegate implementation. 128 CloudPrintURLFetcher::ResponseAction PrinterJobHandler::HandleRawResponse( 129 const net::URLFetcher* source, 130 const GURL& url, 131 const net::URLRequestStatus& status, 132 int response_code, 133 const net::ResponseCookies& cookies, 134 const std::string& data) { 135 // 415 (Unsupported media type) error while fetching data from the server 136 // means data conversion error. Stop fetching process and mark job as error. 137 if (next_data_handler_ == (&PrinterJobHandler::HandlePrintDataResponse) && 138 response_code == net::HTTP_UNSUPPORTED_MEDIA_TYPE) { 139 VLOG(1) << "CP_CONNECTOR: Job failed (unsupported media type)"; 140 base::MessageLoop::current()->PostTask( 141 FROM_HERE, 142 base::Bind(&PrinterJobHandler::JobFailed, this, JOB_DOWNLOAD_FAILED)); 143 return CloudPrintURLFetcher::STOP_PROCESSING; 144 } 145 return CloudPrintURLFetcher::CONTINUE_PROCESSING; 146 } 147 148 CloudPrintURLFetcher::ResponseAction PrinterJobHandler::HandleRawData( 149 const net::URLFetcher* source, 150 const GURL& url, 151 const std::string& data) { 152 if (!next_data_handler_) 153 return CloudPrintURLFetcher::CONTINUE_PROCESSING; 154 return (this->*next_data_handler_)(source, url, data); 155 } 156 157 CloudPrintURLFetcher::ResponseAction PrinterJobHandler::HandleJSONData( 158 const net::URLFetcher* source, 159 const GURL& url, 160 DictionaryValue* json_data, 161 bool succeeded) { 162 DCHECK(next_json_data_handler_); 163 return (this->*next_json_data_handler_)(source, url, json_data, succeeded); 164 } 165 166 // Mark the job fetch as failed and check if other jobs can be printed 167 void PrinterJobHandler::OnRequestGiveUp() { 168 if (job_queue_handler_.JobFetchFailed(job_details_.job_id_)) { 169 VLOG(1) << "CP_CONNECTOR: Job failed to load (scheduling retry)"; 170 CheckForJobs(kJobFetchReasonFailure); 171 base::MessageLoop::current()->PostTask( 172 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 173 } else { 174 VLOG(1) << "CP_CONNECTOR: Job failed (giving up after " << 175 kNumRetriesBeforeAbandonJob << " retries)"; 176 base::MessageLoop::current()->PostTask( 177 FROM_HERE, 178 base::Bind(&PrinterJobHandler::JobFailed, this, JOB_DOWNLOAD_FAILED)); 179 } 180 } 181 182 CloudPrintURLFetcher::ResponseAction PrinterJobHandler::OnRequestAuthError() { 183 // We got an Auth error and have no idea how long it will take to refresh 184 // auth information (may take forever). We'll drop current request and 185 // propagate this error to the upper level. After auth issues will be 186 // resolved, GCP connector will restart. 187 OnAuthError(); 188 return CloudPrintURLFetcher::STOP_PROCESSING; 189 } 190 191 std::string PrinterJobHandler::GetAuthHeader() { 192 return GetCloudPrintAuthHeaderFromStore(); 193 } 194 195 // JobStatusUpdater::Delegate implementation 196 bool PrinterJobHandler::OnJobCompleted(JobStatusUpdater* updater) { 197 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 198 JOB_HANDLER_JOB_COMPLETED, JOB_HANDLER_MAX); 199 UMA_HISTOGRAM_LONG_TIMES("CloudPrint.PrintingTime", 200 base::Time::Now() - updater->start_time()); 201 bool ret = false; 202 base::subtle::NoBarrier_AtomicIncrement(&g_total_jobs_done, 1); 203 job_queue_handler_.JobDone(job_details_.job_id_); 204 205 for (JobStatusUpdaterList::iterator index = job_status_updater_list_.begin(); 206 index != job_status_updater_list_.end(); index++) { 207 if (index->get() == updater) { 208 job_status_updater_list_.erase(index); 209 ret = true; 210 break; 211 } 212 } 213 return ret; 214 } 215 216 void PrinterJobHandler::OnAuthError() { 217 base::MessageLoop::current()->PostTask( 218 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 219 if (delegate_) 220 delegate_->OnAuthError(); 221 } 222 223 void PrinterJobHandler::OnPrinterDeleted() { 224 if (delegate_) 225 delegate_->OnPrinterDeleted(printer_info_cloud_.printer_id); 226 } 227 228 void PrinterJobHandler::OnPrinterChanged() { 229 printer_update_pending_ = true; 230 if (!task_in_progress_) { 231 base::MessageLoop::current()->PostTask( 232 FROM_HERE, base::Bind(&PrinterJobHandler::Start, this)); 233 } 234 } 235 236 void PrinterJobHandler::OnJobChanged() { 237 // Some job on the printer changed. Loop through all our JobStatusUpdaters 238 // and have them check for updates. 239 for (JobStatusUpdaterList::iterator index = job_status_updater_list_.begin(); 240 index != job_status_updater_list_.end(); index++) { 241 base::MessageLoop::current()->PostTask( 242 FROM_HERE, base::Bind(&JobStatusUpdater::UpdateStatus, index->get())); 243 } 244 } 245 246 void PrinterJobHandler::OnJobSpoolSucceeded(const PlatformJobId& job_id) { 247 DCHECK(base::MessageLoop::current() == print_thread_.message_loop()); 248 job_spooler_->AddRef(); 249 print_thread_.message_loop()->ReleaseSoon(FROM_HERE, job_spooler_.get()); 250 job_spooler_ = NULL; 251 job_handler_message_loop_proxy_->PostTask( 252 FROM_HERE, base::Bind(&PrinterJobHandler::JobSpooled, this, job_id)); 253 } 254 255 void PrinterJobHandler::OnJobSpoolFailed() { 256 DCHECK(base::MessageLoop::current() == print_thread_.message_loop()); 257 job_spooler_->AddRef(); 258 print_thread_.message_loop()->ReleaseSoon(FROM_HERE, job_spooler_.get()); 259 job_spooler_ = NULL; 260 VLOG(1) << "CP_CONNECTOR: Job failed (spool failed)"; 261 job_handler_message_loop_proxy_->PostTask( 262 FROM_HERE, base::Bind(&PrinterJobHandler::JobFailed, this, JOB_FAILED)); 263 } 264 265 // static 266 void PrinterJobHandler::ReportsStats() { 267 base::subtle::Atomic32 started = 268 base::subtle::NoBarrier_AtomicExchange(&g_total_jobs_started, 0); 269 base::subtle::Atomic32 done = 270 base::subtle::NoBarrier_AtomicExchange(&g_total_jobs_done, 0); 271 UMA_HISTOGRAM_COUNTS_100("CloudPrint.JobsStartedPerInterval", started); 272 UMA_HISTOGRAM_COUNTS_100("CloudPrint.JobsDonePerInterval", done); 273 } 274 275 PrinterJobHandler::~PrinterJobHandler() { 276 if (printer_watcher_.get()) 277 printer_watcher_->StopWatching(); 278 } 279 280 // Begin Response handlers 281 CloudPrintURLFetcher::ResponseAction 282 PrinterJobHandler::HandlePrinterUpdateResponse( 283 const net::URLFetcher* source, 284 const GURL& url, 285 DictionaryValue* json_data, 286 bool succeeded) { 287 VLOG(1) << "CP_CONNECTOR: Handling printer update response" 288 << ", printer id: " << printer_info_cloud_.printer_id; 289 // We are done here. Go to the Stop state 290 VLOG(1) << "CP_CONNECTOR: Stopping printer job handler" 291 << ", printer id: " << printer_info_cloud_.printer_id; 292 base::MessageLoop::current()->PostTask( 293 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 294 return CloudPrintURLFetcher::STOP_PROCESSING; 295 } 296 297 CloudPrintURLFetcher::ResponseAction 298 PrinterJobHandler::HandleJobMetadataResponse( 299 const net::URLFetcher* source, 300 const GURL& url, 301 DictionaryValue* json_data, 302 bool succeeded) { 303 VLOG(1) << "CP_CONNECTOR: Handling job metadata response" 304 << ", printer id: " << printer_info_cloud_.printer_id; 305 bool job_available = false; 306 if (succeeded) { 307 std::vector<JobDetails> jobs; 308 job_queue_handler_.GetJobsFromQueue(json_data, &jobs); 309 if (!jobs.empty()) { 310 if (jobs[0].time_remaining_ == base::TimeDelta()) { 311 job_available = true; 312 job_details_ = jobs[0]; 313 job_start_time_ = base::Time::Now(); 314 base::subtle::NoBarrier_AtomicIncrement(&g_total_jobs_started, 1); 315 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 316 JOB_HANDLER_JOB_STARTED, JOB_HANDLER_MAX); 317 SetNextDataHandler(&PrinterJobHandler::HandlePrintTicketResponse); 318 request_ = CloudPrintURLFetcher::Create(); 319 request_->StartGetRequest(CloudPrintURLFetcher::REQUEST_TICKET, 320 GURL(job_details_.print_ticket_url_), this, kJobDataMaxRetryCount, 321 std::string()); 322 } else { 323 job_available = false; 324 base::MessageLoop::current()->PostDelayedTask( 325 FROM_HERE, 326 base::Bind(&PrinterJobHandler::RunScheduledJobCheck, this), 327 jobs[0].time_remaining_); 328 } 329 } 330 } 331 332 if (!job_available) { 333 // If no jobs are available, go to the Stop state. 334 VLOG(1) << "CP_CONNECTOR: Stopping printer job handler" 335 << ", printer id: " << printer_info_cloud_.printer_id; 336 base::MessageLoop::current()->PostTask( 337 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 338 } 339 return CloudPrintURLFetcher::STOP_PROCESSING; 340 } 341 342 CloudPrintURLFetcher::ResponseAction 343 PrinterJobHandler::HandlePrintTicketResponse(const net::URLFetcher* source, 344 const GURL& url, 345 const std::string& data) { 346 VLOG(1) << "CP_CONNECTOR: Handling print ticket response" 347 << ", printer id: " << printer_info_cloud_.printer_id; 348 if (print_system_->ValidatePrintTicket(printer_info_.printer_name, data)) { 349 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 350 JOB_HANDLER_VALID_TICKET, JOB_HANDLER_MAX); 351 job_details_.print_ticket_ = data; 352 SetNextDataHandler(&PrinterJobHandler::HandlePrintDataResponse); 353 request_ = CloudPrintURLFetcher::Create(); 354 std::string accept_headers = "Accept: "; 355 accept_headers += print_system_->GetSupportedMimeTypes(); 356 request_->StartGetRequest(CloudPrintURLFetcher::REQUEST_DATA, 357 GURL(job_details_.print_data_url_), this, kJobDataMaxRetryCount, 358 accept_headers); 359 } else { 360 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 361 JOB_HANDLER_INVALID_TICKET, JOB_HANDLER_MAX); 362 // The print ticket was not valid. We are done here. 363 ValidatePrintTicketFailed(); 364 } 365 return CloudPrintURLFetcher::STOP_PROCESSING; 366 } 367 368 CloudPrintURLFetcher::ResponseAction 369 PrinterJobHandler::HandlePrintDataResponse(const net::URLFetcher* source, 370 const GURL& url, 371 const std::string& data) { 372 VLOG(1) << "CP_CONNECTOR: Handling print data response" 373 << ", printer id: " << printer_info_cloud_.printer_id; 374 if (base::CreateTemporaryFile(&job_details_.print_data_file_path_)) { 375 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", JOB_HANDLER_DATA, 376 JOB_HANDLER_MAX); 377 int ret = file_util::WriteFile(job_details_.print_data_file_path_, 378 data.c_str(), data.length()); 379 source->GetResponseHeaders()->GetMimeType( 380 &job_details_.print_data_mime_type_); 381 DCHECK(ret == static_cast<int>(data.length())); 382 if (ret == static_cast<int>(data.length())) { 383 UpdateJobStatus(PRINT_JOB_STATUS_IN_PROGRESS, JOB_SUCCESS); 384 return CloudPrintURLFetcher::STOP_PROCESSING; 385 } 386 } 387 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 388 JOB_HANDLER_INVALID_DATA, JOB_HANDLER_MAX); 389 390 // If we are here, then there was an error in saving the print data, bail out 391 // here. 392 VLOG(1) << "CP_CONNECTOR: Error saving print data" 393 << ", printer id: " << printer_info_cloud_.printer_id; 394 base::MessageLoop::current()->PostTask( 395 FROM_HERE, base::Bind(&PrinterJobHandler::JobFailed, this, 396 JOB_DOWNLOAD_FAILED)); 397 return CloudPrintURLFetcher::STOP_PROCESSING; 398 } 399 400 CloudPrintURLFetcher::ResponseAction 401 PrinterJobHandler::HandleInProgressStatusUpdateResponse( 402 const net::URLFetcher* source, 403 const GURL& url, 404 DictionaryValue* json_data, 405 bool succeeded) { 406 VLOG(1) << "CP_CONNECTOR: Handling success status update response" 407 << ", printer id: " << printer_info_cloud_.printer_id; 408 base::MessageLoop::current()->PostTask( 409 FROM_HERE, base::Bind(&PrinterJobHandler::StartPrinting, this)); 410 return CloudPrintURLFetcher::STOP_PROCESSING; 411 } 412 413 CloudPrintURLFetcher::ResponseAction 414 PrinterJobHandler::HandleFailureStatusUpdateResponse( 415 const net::URLFetcher* source, 416 const GURL& url, 417 DictionaryValue* json_data, 418 bool succeeded) { 419 VLOG(1) << "CP_CONNECTOR: Handling failure status update response" 420 << ", printer id: " << printer_info_cloud_.printer_id; 421 base::MessageLoop::current()->PostTask( 422 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 423 return CloudPrintURLFetcher::STOP_PROCESSING; 424 } 425 426 void PrinterJobHandler::Start() { 427 VLOG(1) << "CP_CONNECTOR: Starting printer job handler" 428 << ", printer id: " << printer_info_cloud_.printer_id 429 << ", task in progress: " << task_in_progress_; 430 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 431 JOB_HANDLER_START, JOB_HANDLER_MAX); 432 if (task_in_progress_) { 433 // Multiple Starts can get posted because of multiple notifications 434 // We want to ignore the other ones that happen when a task is in progress. 435 return; 436 } 437 Reset(); 438 if (!shutting_down_) { 439 // Check if we have work to do. 440 if (HavePendingTasks()) { 441 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 442 JOB_HANDLER_PENDING_TASK, JOB_HANDLER_MAX); 443 if (!task_in_progress_ && printer_update_pending_) { 444 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 445 JOB_HANDLER_PRINTER_UPDATE, JOB_HANDLER_MAX); 446 printer_update_pending_ = false; 447 task_in_progress_ = UpdatePrinterInfo(); 448 VLOG(1) << "CP_CONNECTOR: Changed task in progress" 449 << ", printer id: " << printer_info_cloud_.printer_id 450 << ", task in progress: " << task_in_progress_; 451 } 452 if (!task_in_progress_ && job_check_pending_) { 453 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 454 JOB_HANDLER_JOB_CHECK, JOB_HANDLER_MAX); 455 task_in_progress_ = true; 456 VLOG(1) << "CP_CONNECTOR: Changed task in progress" 457 ", printer id: " << printer_info_cloud_.printer_id 458 << ", task in progress: " << task_in_progress_; 459 job_check_pending_ = false; 460 // We need to fetch any pending jobs for this printer 461 SetNextJSONHandler(&PrinterJobHandler::HandleJobMetadataResponse); 462 request_ = CloudPrintURLFetcher::Create(); 463 request_->StartGetRequest( 464 CloudPrintURLFetcher::REQUEST_JOB_FETCH, 465 GetUrlForJobFetch( 466 cloud_print_server_url_, printer_info_cloud_.printer_id, 467 job_fetch_reason_), 468 this, 469 kCloudPrintAPIMaxRetryCount, 470 std::string()); 471 last_job_fetch_time_ = base::TimeTicks::Now(); 472 VLOG(1) << "CP_CONNECTOR: Last job fetch time" 473 << ", printer name: " << printer_info_.printer_name.c_str() 474 << ", timestamp: " << last_job_fetch_time_.ToInternalValue(); 475 job_fetch_reason_.clear(); 476 } 477 } 478 } 479 } 480 481 void PrinterJobHandler::Stop() { 482 VLOG(1) << "CP_CONNECTOR: Stopping printer job handler" 483 << ", printer id: " << printer_info_cloud_.printer_id; 484 task_in_progress_ = false; 485 VLOG(1) << "CP_CONNECTOR: Changed task in progress" 486 << ", printer id: " << printer_info_cloud_.printer_id 487 << ", task in progress: " << task_in_progress_; 488 Reset(); 489 if (HavePendingTasks()) { 490 base::MessageLoop::current()->PostTask( 491 FROM_HERE, base::Bind(&PrinterJobHandler::Start, this)); 492 } 493 } 494 495 void PrinterJobHandler::StartPrinting() { 496 VLOG(1) << "CP_CONNECTOR: Starting printing" 497 << ", printer id: " << printer_info_cloud_.printer_id; 498 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 499 JOB_HANDLER_SET_START_PRINTING, JOB_HANDLER_MAX); 500 // We are done with the request object for now. 501 request_ = NULL; 502 if (!shutting_down_) { 503 #if defined(OS_WIN) 504 print_thread_.init_com_with_mta(true); 505 #endif 506 if (!print_thread_.Start()) { 507 VLOG(1) << "CP_CONNECTOR: Failed to start print thread" 508 << ", printer id: " << printer_info_cloud_.printer_id; 509 JobFailed(JOB_FAILED); 510 } else { 511 print_thread_.message_loop()->PostTask( 512 FROM_HERE, base::Bind(&PrinterJobHandler::DoPrint, this, job_details_, 513 printer_info_.printer_name)); 514 } 515 } 516 } 517 518 void PrinterJobHandler::Reset() { 519 job_details_.Clear(); 520 request_ = NULL; 521 print_thread_.Stop(); 522 } 523 524 void PrinterJobHandler::UpdateJobStatus(PrintJobStatus status, 525 PrintJobError error) { 526 VLOG(1) << "CP_CONNECTOR: Updating job status" 527 << ", printer id: " << printer_info_cloud_.printer_id 528 << ", job id: " << job_details_.job_id_ 529 << ", job status: " << status; 530 if (shutting_down_) { 531 VLOG(1) << "CP_CONNECTOR: Job status update aborted (shutting down)" 532 << ", printer id: " << printer_info_cloud_.printer_id 533 << ", job id: " << job_details_.job_id_; 534 return; 535 } 536 if (job_details_.job_id_.empty()) { 537 VLOG(1) << "CP_CONNECTOR: Job status update aborted (empty job id)" 538 << ", printer id: " << printer_info_cloud_.printer_id; 539 return; 540 } 541 542 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobStatus", error, JOB_MAX); 543 544 if (error == JOB_SUCCESS) { 545 DCHECK_EQ(status, PRINT_JOB_STATUS_IN_PROGRESS); 546 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 547 JOB_HANDLER_SET_IN_PROGRESS, JOB_HANDLER_MAX); 548 SetNextJSONHandler( 549 &PrinterJobHandler::HandleInProgressStatusUpdateResponse); 550 } else { 551 SetNextJSONHandler( 552 &PrinterJobHandler::HandleFailureStatusUpdateResponse); 553 } 554 request_ = CloudPrintURLFetcher::Create(); 555 request_->StartGetRequest( 556 CloudPrintURLFetcher::REQUEST_UPDATE_JOB, 557 GetUrlForJobStatusUpdate(cloud_print_server_url_, job_details_.job_id_, 558 status, error), 559 this, kCloudPrintAPIMaxRetryCount, std::string()); 560 } 561 562 void PrinterJobHandler::RunScheduledJobCheck() { 563 CheckForJobs(kJobFetchReasonRetry); 564 } 565 566 void PrinterJobHandler::SetNextJSONHandler(JSONDataHandler handler) { 567 next_json_data_handler_ = handler; 568 next_data_handler_ = NULL; 569 } 570 571 void PrinterJobHandler::SetNextDataHandler(DataHandler handler) { 572 next_data_handler_ = handler; 573 next_json_data_handler_ = NULL; 574 } 575 576 void PrinterJobHandler::JobFailed(PrintJobError error) { 577 VLOG(1) << "CP_CONNECTOR: Job failed" 578 << ", printer id: " << printer_info_cloud_.printer_id 579 << ", job id: " << job_details_.job_id_ 580 << ", error: " << error; 581 if (!shutting_down_) { 582 UpdateJobStatus(PRINT_JOB_STATUS_ERROR, error); 583 // This job failed, but others may be pending. Schedule a check. 584 job_check_pending_ = true; 585 job_fetch_reason_ = kJobFetchReasonFailure; 586 } 587 } 588 589 void PrinterJobHandler::JobSpooled(PlatformJobId local_job_id) { 590 VLOG(1) << "CP_CONNECTOR: Job spooled" 591 << ", printer id: " << printer_info_cloud_.printer_id 592 << ", job id: " << local_job_id; 593 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", JOB_HANDLER_SPOOLED, 594 JOB_HANDLER_MAX); 595 UMA_HISTOGRAM_LONG_TIMES("CloudPrint.SpoolingTime", 596 base::Time::Now() - spooling_start_time_); 597 if (shutting_down_) 598 return; 599 600 local_job_id_ = local_job_id; 601 print_thread_.Stop(); 602 603 // The print job has been spooled locally. We now need to create an object 604 // that monitors the status of the job and updates the server. 605 scoped_refptr<JobStatusUpdater> job_status_updater( 606 new JobStatusUpdater(printer_info_.printer_name, job_details_.job_id_, 607 local_job_id_, cloud_print_server_url_, 608 print_system_.get(), this)); 609 job_status_updater_list_.push_back(job_status_updater); 610 base::MessageLoop::current()->PostTask( 611 FROM_HERE, 612 base::Bind(&JobStatusUpdater::UpdateStatus, job_status_updater.get())); 613 614 CheckForJobs(kJobFetchReasonQueryMore); 615 616 VLOG(1) << "CP_CONNECTOR: Stopping printer job handler" 617 << ", printer id: " << printer_info_cloud_.printer_id; 618 base::MessageLoop::current()->PostTask( 619 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 620 } 621 622 bool PrinterJobHandler::UpdatePrinterInfo() { 623 if (!printer_watcher_.get()) { 624 LOG(ERROR) << "CP_CONNECTOR: Printer watcher is missing." 625 << " Check printer server url for printer id: " 626 << printer_info_cloud_.printer_id; 627 return false; 628 } 629 630 VLOG(1) << "CP_CONNECTOR: Updating printer info" 631 << ", printer id: " << printer_info_cloud_.printer_id; 632 // We need to update the parts of the printer info that have changed 633 // (could be printer name, description, status or capabilities). 634 // First asynchronously fetch the capabilities. 635 printing::PrinterBasicInfo printer_info; 636 printer_watcher_->GetCurrentPrinterInfo(&printer_info); 637 638 // Asynchronously fetch the printer caps and defaults. The story will 639 // continue in OnReceivePrinterCaps. 640 print_system_->GetPrinterCapsAndDefaults( 641 printer_info.printer_name.c_str(), 642 base::Bind(&PrinterJobHandler::OnReceivePrinterCaps, 643 weak_ptr_factory_.GetWeakPtr())); 644 645 // While we are waiting for the data, pretend we have work to do and return 646 // true. 647 return true; 648 } 649 650 bool PrinterJobHandler::HavePendingTasks() { 651 return (job_check_pending_ || printer_update_pending_); 652 } 653 654 void PrinterJobHandler::ValidatePrintTicketFailed() { 655 if (!shutting_down_) { 656 LOG(ERROR) << "CP_CONNECTOR: Failed validating print ticket" 657 << ", printer name: " << printer_info_.printer_name 658 << ", job id: " << job_details_.job_id_; 659 JobFailed(JOB_VALIDATE_TICKET_FAILED); 660 } 661 } 662 663 void PrinterJobHandler::OnReceivePrinterCaps( 664 bool succeeded, 665 const std::string& printer_name, 666 const printing::PrinterCapsAndDefaults& caps_and_defaults) { 667 printing::PrinterBasicInfo printer_info; 668 if (printer_watcher_.get()) 669 printer_watcher_->GetCurrentPrinterInfo(&printer_info); 670 671 std::string post_data; 672 std::string mime_boundary; 673 CreateMimeBoundaryForUpload(&mime_boundary); 674 675 if (succeeded) { 676 std::string caps_hash = 677 base::MD5String(caps_and_defaults.printer_capabilities); 678 if (caps_hash != printer_info_cloud_.caps_hash) { 679 // Hashes don't match, we need to upload new capabilities (the defaults 680 // go for free along with the capabilities) 681 printer_info_cloud_.caps_hash = caps_hash; 682 net::AddMultipartValueForUpload(kPrinterCapsValue, 683 caps_and_defaults.printer_capabilities, mime_boundary, 684 caps_and_defaults.caps_mime_type, &post_data); 685 net::AddMultipartValueForUpload(kPrinterDefaultsValue, 686 caps_and_defaults.printer_defaults, mime_boundary, 687 caps_and_defaults.defaults_mime_type, &post_data); 688 net::AddMultipartValueForUpload(kPrinterCapsHashValue, 689 caps_hash, mime_boundary, std::string(), &post_data); 690 } 691 } else { 692 LOG(ERROR) << "Failed to get printer caps and defaults" 693 << ", printer name: " << printer_name; 694 } 695 696 std::string tags_hash = GetHashOfPrinterInfo(printer_info); 697 if (tags_hash != printer_info_cloud_.tags_hash) { 698 printer_info_cloud_.tags_hash = tags_hash; 699 post_data += GetPostDataForPrinterInfo(printer_info, mime_boundary); 700 // Remove all the existing proxy tags. 701 std::string cp_tag_wildcard(kCloudPrintServiceProxyTagPrefix); 702 cp_tag_wildcard += ".*"; 703 net::AddMultipartValueForUpload(kPrinterRemoveTagValue, 704 cp_tag_wildcard, mime_boundary, std::string(), &post_data); 705 706 if (!last_caps_update_time_.is_null()) { 707 UMA_HISTOGRAM_CUSTOM_TIMES( 708 "CloudPrint.CapsUpdateInterval", 709 base::Time::Now() - last_caps_update_time_, 710 base::TimeDelta::FromMilliseconds(1), 711 base::TimeDelta::FromDays(7), 50); 712 } 713 last_caps_update_time_ = base::Time::Now(); 714 } 715 716 if (printer_info.printer_name != printer_info_.printer_name) { 717 net::AddMultipartValueForUpload(kPrinterNameValue, 718 printer_info.printer_name, mime_boundary, std::string(), &post_data); 719 } 720 if (printer_info.printer_description != printer_info_.printer_description) { 721 net::AddMultipartValueForUpload(kPrinterDescValue, 722 printer_info.printer_description, mime_boundary, 723 std::string(), &post_data); 724 } 725 if (printer_info.printer_status != printer_info_.printer_status) { 726 net::AddMultipartValueForUpload(kPrinterStatusValue, 727 base::StringPrintf("%d", printer_info.printer_status), mime_boundary, 728 std::string(), &post_data); 729 } 730 731 // Add local_settings with a current XMPP ping interval. 732 if (printer_info_cloud_.pending_xmpp_timeout != 0) { 733 DCHECK(kMinXmppPingTimeoutSecs <= printer_info_cloud_.pending_xmpp_timeout); 734 net::AddMultipartValueForUpload(kPrinterLocalSettingsValue, 735 base::StringPrintf(kUpdateLocalSettingsXmppPingFormat, 736 printer_info_cloud_.current_xmpp_timeout), 737 mime_boundary, std::string(), &post_data); 738 } 739 740 printer_info_ = printer_info; 741 if (!post_data.empty()) { 742 net::AddMultipartFinalDelimiterForUpload(mime_boundary, &post_data); 743 std::string mime_type("multipart/form-data; boundary="); 744 mime_type += mime_boundary; 745 SetNextJSONHandler(&PrinterJobHandler::HandlePrinterUpdateResponse); 746 request_ = CloudPrintURLFetcher::Create(); 747 request_->StartPostRequest( 748 CloudPrintURLFetcher::REQUEST_UPDATE_PRINTER, 749 GetUrlForPrinterUpdate( 750 cloud_print_server_url_, printer_info_cloud_.printer_id), 751 this, 752 kCloudPrintAPIMaxRetryCount, 753 mime_type, 754 post_data, 755 std::string()); 756 } else { 757 // We are done here. Go to the Stop state 758 VLOG(1) << "CP_CONNECTOR: Stopping printer job handler" 759 << ", printer name: " << printer_name; 760 base::MessageLoop::current()->PostTask( 761 FROM_HERE, base::Bind(&PrinterJobHandler::Stop, this)); 762 } 763 } 764 765 // The following methods are called on |print_thread_|. It is not safe to 766 // access any members other than |job_handler_message_loop_proxy_|, 767 // |job_spooler_| and |print_system_|. 768 void PrinterJobHandler::DoPrint(const JobDetails& job_details, 769 const std::string& printer_name) { 770 job_spooler_ = print_system_->CreateJobSpooler(); 771 UMA_HISTOGRAM_LONG_TIMES("CloudPrint.PrepareTime", 772 base::Time::Now() - job_start_time_); 773 DCHECK(job_spooler_.get()); 774 if (!job_spooler_.get()) 775 return; 776 string16 document_name = 777 printing::SimplifyDocumentTitle(UTF8ToUTF16(job_details.job_title_)); 778 if (document_name.empty()) { 779 document_name = printing::SimplifyDocumentTitle( 780 l10n_util::GetStringUTF16(IDS_DEFAULT_PRINT_DOCUMENT_TITLE)); 781 } 782 UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", 783 JOB_HANDLER_START_SPOOLING, JOB_HANDLER_MAX); 784 spooling_start_time_ = base::Time::Now(); 785 if (!job_spooler_->Spool(job_details.print_ticket_, 786 job_details.print_data_file_path_, 787 job_details.print_data_mime_type_, 788 printer_name, 789 UTF16ToUTF8(document_name), 790 job_details.tags_, 791 this)) { 792 OnJobSpoolFailed(); 793 } 794 } 795 796 } // namespace cloud_print 797
