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      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 "components/domain_reliability/uploader.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/callback.h"
      9 #include "base/memory/scoped_vector.h"
     10 #include "base/metrics/sparse_histogram.h"
     11 #include "base/stl_util.h"
     12 #include "base/supports_user_data.h"
     13 #include "net/base/load_flags.h"
     14 #include "net/url_request/url_fetcher.h"
     15 #include "net/url_request/url_fetcher_delegate.h"
     16 #include "net/url_request/url_request_context_getter.h"
     17 
     18 namespace domain_reliability {
     19 
     20 namespace {
     21 
     22 const char* kJsonMimeType = "application/json; charset=utf-8";
     23 
     24 class UploadUserData : public base::SupportsUserData::Data {
     25  public:
     26   static net::URLFetcher::CreateDataCallback CreateCreateDataCallback() {
     27     return base::Bind(&UploadUserData::CreateUploadUserData);
     28   }
     29 
     30   static const void* kUserDataKey;
     31 
     32  private:
     33   static base::SupportsUserData::Data* CreateUploadUserData() {
     34     return new UploadUserData();
     35   }
     36 };
     37 
     38 const void* UploadUserData::kUserDataKey =
     39     static_cast<const void*>(&UploadUserData::kUserDataKey);
     40 
     41 class DomainReliabilityUploaderImpl
     42     : public DomainReliabilityUploader, net::URLFetcherDelegate {
     43  public:
     44   DomainReliabilityUploaderImpl(const scoped_refptr<
     45       net::URLRequestContextGetter>& url_request_context_getter)
     46       : url_request_context_getter_(url_request_context_getter) {}
     47 
     48   virtual ~DomainReliabilityUploaderImpl() {
     49     // Delete any in-flight URLFetchers.
     50     STLDeleteContainerPairFirstPointers(
     51         upload_callbacks_.begin(), upload_callbacks_.end());
     52   }
     53 
     54   // DomainReliabilityUploader implementation:
     55   virtual void UploadReport(
     56       const std::string& report_json,
     57       const GURL& upload_url,
     58       const DomainReliabilityUploader::UploadCallback& callback) OVERRIDE {
     59     VLOG(1) << "Uploading report to " << upload_url;
     60     VLOG(2) << "Report JSON: " << report_json;
     61 
     62     net::URLFetcher* fetcher =
     63         net::URLFetcher::Create(0, upload_url, net::URLFetcher::POST, this);
     64     fetcher->SetRequestContext(url_request_context_getter_);
     65     fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
     66                           net::LOAD_DO_NOT_SAVE_COOKIES);
     67     fetcher->SetUploadData(kJsonMimeType, report_json);
     68     fetcher->SetAutomaticallyRetryOn5xx(false);
     69     fetcher->SetURLRequestUserData(
     70         UploadUserData::kUserDataKey,
     71         UploadUserData::CreateCreateDataCallback());
     72     fetcher->Start();
     73 
     74     upload_callbacks_[fetcher] = callback;
     75   }
     76 
     77   // net::URLFetcherDelegate implementation:
     78   virtual void OnURLFetchComplete(
     79       const net::URLFetcher* fetcher) OVERRIDE {
     80     DCHECK(fetcher);
     81 
     82     UploadCallbackMap::iterator callback_it = upload_callbacks_.find(fetcher);
     83     DCHECK(callback_it != upload_callbacks_.end());
     84 
     85     VLOG(1) << "Upload finished with " << fetcher->GetResponseCode();
     86 
     87     UMA_HISTOGRAM_SPARSE_SLOWLY("DomainReliability.UploadResponseCode",
     88                                 fetcher->GetResponseCode());
     89 
     90     bool success = fetcher->GetResponseCode() == 200;
     91     callback_it->second.Run(success);
     92 
     93     delete callback_it->first;
     94     upload_callbacks_.erase(callback_it);
     95   }
     96 
     97  private:
     98   using DomainReliabilityUploader::UploadCallback;
     99   typedef std::map<const net::URLFetcher*, UploadCallback> UploadCallbackMap;
    100 
    101   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
    102   UploadCallbackMap upload_callbacks_;
    103 };
    104 
    105 }  // namespace
    106 
    107 DomainReliabilityUploader::DomainReliabilityUploader() {}
    108 DomainReliabilityUploader::~DomainReliabilityUploader() {}
    109 
    110 // static
    111 scoped_ptr<DomainReliabilityUploader> DomainReliabilityUploader::Create(
    112     const scoped_refptr<net::URLRequestContextGetter>&
    113         url_request_context_getter) {
    114   return scoped_ptr<DomainReliabilityUploader>(
    115       new DomainReliabilityUploaderImpl(url_request_context_getter));
    116 }
    117 
    118 // static
    119 bool DomainReliabilityUploader::URLRequestIsUpload(
    120     const net::URLRequest& request) {
    121   return request.GetUserData(UploadUserData::kUserDataKey) != NULL;
    122 }
    123 
    124 }  // namespace domain_reliability
    125