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// Copyright (c) 2010 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/json/json_reader.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/service/cloud_print/cloud_print_consts.h"
#include "chrome/service/cloud_print/cloud_print_helpers.h"
#include "googleurl/src/gurl.h"
JobStatusUpdater::JobStatusUpdater(const std::string& printer_name,
const std::string& job_id,
cloud_print::PlatformJobId& local_job_id,
const std::string& auth_token,
const GURL& cloud_print_server_url,
Delegate* delegate)
: printer_name_(printer_name), job_id_(job_id),
local_job_id_(local_job_id), auth_token_(auth_token),
cloud_print_server_url_(cloud_print_server_url),
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 (last_job_details_.status == cloud_print::PRINT_JOB_STATUS_COMPLETED) {
need_update = true;
} else {
cloud_print::PrintJobDetails details;
if (cloud_print::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 = cloud_print::PRINT_JOB_STATUS_COMPLETED;
need_update = true;
}
}
if (need_update) {
GURL update_url = CloudPrintHelpers::GetUrlForJobStatusUpdate(
cloud_print_server_url_, job_id_, last_job_details_);
request_.reset(new URLFetcher(update_url, URLFetcher::GET, this));
CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
request_->Start();
}
}
}
void JobStatusUpdater::Stop() {
request_.reset();
DCHECK(delegate_);
stopped_ = true;
delegate_->OnJobCompleted(this);
}
// URLFetcher::Delegate implementation.
void JobStatusUpdater::OnURLFetchComplete(const URLFetcher* source,
const GURL& url,
const URLRequestStatus& status,
int response_code,
const ResponseCookies& cookies,
const std::string& data) {
int64 next_update_interval = kJobStatusUpdateInterval;
if (!status.is_success() || (response_code != 200)) {
next_update_interval *= 10;
MessageLoop::current()->PostDelayedTask(
FROM_HERE, NewRunnableMethod(this, &JobStatusUpdater::UpdateStatus),
next_update_interval);
} else if (last_job_details_.status ==
cloud_print::PRINT_JOB_STATUS_COMPLETED) {
MessageLoop::current()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JobStatusUpdater::Stop));
}
}
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