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// Copyright 2013 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/browser/translate/translate_url_fetcher.h"
#include "chrome/browser/browser_process.h"
#include "net/base/load_flags.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request_status.h"
namespace {
// Retry parameter for fetching.
const int kMaxRetry = 16;
} // namespace
TranslateURLFetcher::TranslateURLFetcher(int id)
: id_(id),
state_(IDLE),
retry_count_(0) {
}
TranslateURLFetcher::~TranslateURLFetcher() {
}
bool TranslateURLFetcher::Request(
const GURL& url,
const TranslateURLFetcher::Callback& callback) {
// This function is not supposed to be called before previous operaion is not
// finished.
if (state_ == REQUESTING) {
NOTREACHED();
return false;
}
if (retry_count_ >= kMaxRetry)
return false;
retry_count_++;
state_ = REQUESTING;
url_ = url;
callback_ = callback;
fetcher_.reset(net::URLFetcher::Create(
id_,
url_,
net::URLFetcher::GET,
this));
fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
net::LOAD_DO_NOT_SAVE_COOKIES);
fetcher_->SetRequestContext(g_browser_process->system_request_context());
// Set retry parameter for HTTP status code 5xx. This doesn't work against
// 106 (net::ERR_INTERNET_DISCONNECTED) and so on.
// TranslateLanguageList handles network status, and implements retry.
fetcher_->SetMaxRetriesOn5xx(max_retry_on_5xx_);
if (!extra_request_header_.empty())
fetcher_->SetExtraRequestHeaders(extra_request_header_);
fetcher_->Start();
return true;
}
void TranslateURLFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
DCHECK(fetcher_.get() == source);
std::string data;
if (source->GetStatus().status() == net::URLRequestStatus::SUCCESS &&
source->GetResponseCode() == net::HTTP_OK) {
state_ = COMPLETED;
source->GetResponseAsString(&data);
} else {
state_ = FAILED;
}
// Transfer URLFetcher's ownership before invoking a callback.
scoped_ptr<const net::URLFetcher> delete_ptr(fetcher_.release());
callback_.Run(id_, state_ == COMPLETED, data);
}
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