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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 "google_apis/drive/request_sender.h"
#include "base/bind.h"
#include "base/sequenced_task_runner.h"
#include "base/stl_util.h"
#include "google_apis/drive/auth_service.h"
#include "google_apis/drive/base_requests.h"
#include "net/url_request/url_request_context_getter.h"
namespace google_apis {
RequestSender::RequestSender(
AuthServiceInterface* auth_service,
net::URLRequestContextGetter* url_request_context_getter,
const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner,
const std::string& custom_user_agent)
: auth_service_(auth_service),
url_request_context_getter_(url_request_context_getter),
blocking_task_runner_(blocking_task_runner),
custom_user_agent_(custom_user_agent),
weak_ptr_factory_(this) {
}
RequestSender::~RequestSender() {
DCHECK(thread_checker_.CalledOnValidThread());
STLDeleteContainerPointers(in_flight_requests_.begin(),
in_flight_requests_.end());
}
base::Closure RequestSender::StartRequestWithRetry(
AuthenticatedRequestInterface* request) {
DCHECK(thread_checker_.CalledOnValidThread());
in_flight_requests_.insert(request);
// TODO(kinaba): Stop relying on weak pointers. Move lifetime management
// of the requests to request sender.
base::Closure cancel_closure =
base::Bind(&RequestSender::CancelRequest,
weak_ptr_factory_.GetWeakPtr(),
request->GetWeakPtr());
if (!auth_service_->HasAccessToken()) {
// Fetch OAuth2 access token from the refresh token first.
auth_service_->StartAuthentication(
base::Bind(&RequestSender::OnAccessTokenFetched,
weak_ptr_factory_.GetWeakPtr(),
request->GetWeakPtr()));
} else {
request->Start(auth_service_->access_token(),
custom_user_agent_,
base::Bind(&RequestSender::RetryRequest,
weak_ptr_factory_.GetWeakPtr()));
}
return cancel_closure;
}
void RequestSender::OnAccessTokenFetched(
const base::WeakPtr<AuthenticatedRequestInterface>& request,
GDataErrorCode code,
const std::string& /* access_token */) {
DCHECK(thread_checker_.CalledOnValidThread());
// Do nothing if the request is canceled during authentication.
if (!request.get())
return;
if (code == HTTP_SUCCESS) {
DCHECK(auth_service_->HasAccessToken());
StartRequestWithRetry(request.get());
} else {
request->OnAuthFailed(code);
}
}
void RequestSender::RetryRequest(AuthenticatedRequestInterface* request) {
DCHECK(thread_checker_.CalledOnValidThread());
auth_service_->ClearAccessToken();
// User authentication might have expired - rerun the request to force
// auth token refresh.
StartRequestWithRetry(request);
}
void RequestSender::CancelRequest(
const base::WeakPtr<AuthenticatedRequestInterface>& request) {
DCHECK(thread_checker_.CalledOnValidThread());
// Do nothing if the request is already finished.
if (!request.get())
return;
request->Cancel();
}
void RequestSender::RequestFinished(AuthenticatedRequestInterface* request) {
in_flight_requests_.erase(request);
delete request;
}
} // namespace google_apis
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