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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/service/cloud_print/job_status_updater.h"
#include "base/bind.h"
#include "base/json/json_reader.h"
#include "base/metrics/histogram.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/cloud_print/cloud_print_constants.h"
#include "chrome/service/cloud_print/cloud_print_service_helpers.h"
#include "url/gurl.h"
namespace cloud_print {
namespace {
bool IsTerminalJobState(PrintJobStatus status) {
return status == PRINT_JOB_STATUS_ERROR ||
status == PRINT_JOB_STATUS_COMPLETED;
}
} // namespace
JobStatusUpdater::JobStatusUpdater(const std::string& printer_name,
const std::string& job_id,
PlatformJobId& local_job_id,
const GURL& cloud_print_server_url,
PrintSystem* print_system,
Delegate* delegate)
: start_time_(base::Time::Now()),
printer_name_(printer_name),
job_id_(job_id),
local_job_id_(local_job_id),
cloud_print_server_url_(cloud_print_server_url),
print_system_(print_system),
delegate_(delegate),
stopped_(false) {
DCHECK(delegate_);
}
// Start checking the status of the local print job.
void JobStatusUpdater::UpdateStatus() {
// It does not matter if we had already sent out an update and are waiting for
// a response. This is a new update and we will simply cancel the old request
// and send a new one.
if (!stopped_) {
bool need_update = false;
// If the job has already been completed, we just need to update the server
// with that status. The *only* reason we would come back here in that case
// is if our last server update attempt failed.
if (IsTerminalJobState(last_job_details_.status)) {
need_update = true;
} else {
PrintJobDetails details;
if (print_system_->GetJobDetails(printer_name_, local_job_id_,
&details)) {
if (details != last_job_details_) {
last_job_details_ = details;
need_update = true;
}
} else {
// If GetJobDetails failed, the most likely case is that the job no
// longer exists in the OS queue. We are going to assume it is done in
// this case.
last_job_details_.Clear();
last_job_details_.status = PRINT_JOB_STATUS_COMPLETED;
need_update = true;
}
UMA_HISTOGRAM_ENUMERATION("CloudPrint.NativeJobStatus",
last_job_details_.status, PRINT_JOB_STATUS_MAX);
}
if (need_update) {
request_ = CloudPrintURLFetcher::Create();
request_->StartGetRequest(
CloudPrintURLFetcher::REQUEST_UPDATE_JOB,
GetUrlForJobStatusUpdate(
cloud_print_server_url_, job_id_, last_job_details_),
this,
kCloudPrintAPIMaxRetryCount,
std::string());
}
}
}
void JobStatusUpdater::Stop() {
request_ = NULL;
DCHECK(delegate_);
stopped_ = true;
delegate_->OnJobCompleted(this);
}
// CloudPrintURLFetcher::Delegate implementation.
CloudPrintURLFetcher::ResponseAction JobStatusUpdater::HandleJSONData(
const net::URLFetcher* source,
const GURL& url,
base::DictionaryValue* json_data,
bool succeeded) {
if (IsTerminalJobState(last_job_details_.status)) {
base::MessageLoop::current()->PostTask(
FROM_HERE, base::Bind(&JobStatusUpdater::Stop, this));
}
return CloudPrintURLFetcher::STOP_PROCESSING;
}
CloudPrintURLFetcher::ResponseAction JobStatusUpdater::OnRequestAuthError() {
// We got an Auth error and have no idea how long it will take to refresh
// auth information (may take forever). We'll drop current request and
// propagate this error to the upper level. After auth issues will be
// resolved, GCP connector will restart.
if (delegate_)
delegate_->OnAuthError();
return CloudPrintURLFetcher::STOP_PROCESSING;
}
std::string JobStatusUpdater::GetAuthHeader() {
return GetCloudPrintAuthHeaderFromStore();
}
JobStatusUpdater::~JobStatusUpdater() {}
} // namespace cloud_print
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