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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.
#include "components/cryptauth/cryptauth_access_token_fetcher_impl.h"
namespace cryptauth {
namespace {
// Returns the set of OAuth2 scopes that CryptAuth uses.
OAuth2TokenService::ScopeSet GetScopes() {
OAuth2TokenService::ScopeSet scopes;
scopes.insert("https://www.googleapis.com/auth/cryptauth");
return scopes;
}
} // namespace
CryptAuthAccessTokenFetcherImpl::CryptAuthAccessTokenFetcherImpl(
OAuth2TokenService* token_service,
const std::string& account_id)
: OAuth2TokenService::Consumer("cryptauth_access_token_fetcher"),
token_service_(token_service),
account_id_(account_id),
fetch_started_(false) {
}
CryptAuthAccessTokenFetcherImpl::~CryptAuthAccessTokenFetcherImpl() {
}
void CryptAuthAccessTokenFetcherImpl::FetchAccessToken(
const AccessTokenCallback& callback) {
if (fetch_started_) {
LOG(WARNING) << "Create an instance for each token fetched. Do not reuse.";
callback.Run(std::string());
return;
}
fetch_started_ = true;
callback_ = callback;
// This request will return a cached result if it is available, saving a
// network round trip every time we fetch the access token.
token_request_ = token_service_->StartRequest(account_id_, GetScopes(), this);
}
void CryptAuthAccessTokenFetcherImpl::OnGetTokenSuccess(
const OAuth2TokenService::Request* request,
const std::string& access_token,
const base::Time& expiration_time) {
callback_.Run(access_token);
}
void CryptAuthAccessTokenFetcherImpl::OnGetTokenFailure(
const OAuth2TokenService::Request* request,
const GoogleServiceAuthError& error) {
callback_.Run(std::string());
}
} // namespace cryptauth
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