google_apis/gaia/oauth2_access_token_fetcher_immediate_error.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "google_apis/gaia/oauth2_access_token_fetcher_immediate_error.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "google_apis/gaia/google_service_auth_error.h"
  10
  11
  12 OAuth2AccessTokenFetcherImmediateError::FailCaller::FailCaller(
  13     OAuth2AccessTokenFetcherImmediateError* fetcher)
  14     : fetcher_(fetcher) {
  15   base::MessageLoop* looper = base::MessageLoop::current();
  16   DCHECK(looper);
  17   looper->PostTask(
  18       FROM_HERE,
  19       base::Bind(&OAuth2AccessTokenFetcherImmediateError::FailCaller::run,
  20                  this));
  21 }
  22
  23 OAuth2AccessTokenFetcherImmediateError::FailCaller::~FailCaller() {
  24 }
  25
  26 void OAuth2AccessTokenFetcherImmediateError::FailCaller::run() {
  27   if (fetcher_) {
  28     fetcher_->Fail();
  29     fetcher_ = NULL;
  30   }
  31 }
  32
  33 void OAuth2AccessTokenFetcherImmediateError::FailCaller::detach() {
  34   fetcher_ = NULL;
  35 }
  36
  37
  38 OAuth2AccessTokenFetcherImmediateError::OAuth2AccessTokenFetcherImmediateError(
  39     OAuth2AccessTokenConsumer* consumer,
  40     const GoogleServiceAuthError& error)
  41     : OAuth2AccessTokenFetcher(consumer),
  42       immediate_error_(error) {
  43   DCHECK(immediate_error_ != GoogleServiceAuthError::AuthErrorNone());
  44 }
  45
  46 OAuth2AccessTokenFetcherImmediateError::
  47     ~OAuth2AccessTokenFetcherImmediateError() {
  48   CancelRequest();
  49 }
  50
  51 void OAuth2AccessTokenFetcherImmediateError::CancelRequest() {
  52   if (failer_) {
  53     failer_->detach();
  54     failer_ = NULL;
  55   }
  56 }
  57
  58 void OAuth2AccessTokenFetcherImmediateError::Start(
  59     const std::string& client_id,
  60     const std::string& client_secret,
  61     const std::vector<std::string>& scopes) {
  62   failer_ = new FailCaller(this);
  63 }
  64
  65 void OAuth2AccessTokenFetcherImmediateError::Fail() {
  66   // The call below will likely destruct this object.  We have to make a copy
  67   // of the error into a local variable because the class member thus will
  68   // be destroyed after which the copy-passed-by-reference will cause a
  69   // memory violation when accessed.
  70   GoogleServiceAuthError error_copy = immediate_error_;
  71   FireOnGetTokenFailure(error_copy);
  72 }