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// Copyright 2014 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.
#ifndef GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_REQUEST_H_
#define GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_REQUEST_H_
#include <set>
#include <string>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/non_thread_safe.h"
#include "google_apis/gaia/oauth2_token_service.h"
// OAuth2TokenServiceRequest represents an asynchronous request to an
// OAuth2TokenService that may live in another thread.
//
// An OAuth2TokenServiceRequest can be created and started from any thread.
class OAuth2TokenServiceRequest : public OAuth2TokenService::Request,
public base::NonThreadSafe {
public:
class Core;
// Interface for providing an OAuth2TokenService.
//
// Ref-counted so that OAuth2TokenServiceRequest can ensure this object isn't
// destroyed out from under the token service task runner thread. Because
// OAuth2TokenServiceRequest has a reference, implementations of
// TokenServiceProvider must be capable of being destroyed on the same thread
// on which the OAuth2TokenServiceRequest was created.
class TokenServiceProvider
: public base::RefCountedThreadSafe<TokenServiceProvider> {
public:
TokenServiceProvider();
// Returns the task runner on which the token service lives.
//
// This method may be called from any thread.
virtual scoped_refptr<base::SingleThreadTaskRunner>
GetTokenServiceTaskRunner() = 0;
// Returns a pointer to a token service.
//
// Caller does not own the token service and must not delete it. The token
// service must outlive all instances of OAuth2TokenServiceRequest.
//
// This method may only be called from the task runner returned by
// |GetTokenServiceTaskRunner|.
virtual OAuth2TokenService* GetTokenService() = 0;
protected:
friend class base::RefCountedThreadSafe<TokenServiceProvider>;
virtual ~TokenServiceProvider();
};
// Creates and starts an access token request for |account_id| and |scopes|.
//
// |provider| is used to get the OAuth2TokenService.
//
// |account_id| must not be empty.
//
// |scopes| must not be empty.
//
// |consumer| will be invoked in the same thread that invoked CreateAndStart
// and must outlive the returned request object. Destroying the request
// object ensure that |consumer| will not be called. However, the actual
// network activities may not be canceled and the cache in OAuth2TokenService
// may be populated with the fetched results.
static scoped_ptr<OAuth2TokenServiceRequest> CreateAndStart(
const scoped_refptr<TokenServiceProvider>& provider,
const std::string& account_id,
const OAuth2TokenService::ScopeSet& scopes,
OAuth2TokenService::Consumer* consumer);
// Invalidates |access_token| for |account_id| and |scopes|.
//
// |provider| is used to get the OAuth2TokenService.
//
// |account_id| must not be empty.
//
// |scopes| must not be empty.
static void InvalidateToken(
const scoped_refptr<TokenServiceProvider>& provider,
const std::string& account_id,
const OAuth2TokenService::ScopeSet& scopes,
const std::string& access_token);
~OAuth2TokenServiceRequest() override;
// OAuth2TokenService::Request.
std::string GetAccountId() const override;
private:
OAuth2TokenServiceRequest(const std::string& account_id);
void StartWithCore(const scoped_refptr<Core>& core);
const std::string account_id_;
scoped_refptr<Core> core_;
DISALLOW_COPY_AND_ASSIGN(OAuth2TokenServiceRequest);
};
#endif // GOOGLE_APIS_GAIA_OAUTH2_TOKEN_SERVICE_REQUEST_H_
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