src/google_apis/gcm/engine/checkin_request.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/gcm/engine/checkin_request.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/metrics/histogram.h"
  10 #include "google_apis/gcm/monitoring/gcm_stats_recorder.h"
  11 #include "google_apis/gcm/protocol/checkin.pb.h"
  12 #include "net/http/http_status_code.h"
  13 #include "net/url_request/url_fetcher.h"
  14 #include "net/url_request/url_request_status.h"
  15
  16 namespace gcm {
  17
  18 namespace {
  19 const char kRequestContentType[] = "application/x-protobuf";
  20 const int kRequestVersionValue = 2;
  21 const int kDefaultUserSerialNumber = 0;
  22
  23 // This enum is also used in an UMA histogram (GCMCheckinRequestStatus
  24 // enum defined in tools/metrics/histograms/histogram.xml). Hence the entries
  25 // here shouldn't be deleted or re-ordered and new ones should be added to
  26 // the end, and update the GetCheckinRequestStatusString(...) below.
  27 enum CheckinRequestStatus {
  28   SUCCESS,                    // Checkin completed successfully.
  29   URL_FETCHING_FAILED,        // URL fetching failed.
  30   HTTP_BAD_REQUEST,           // The request was malformed.
  31   HTTP_UNAUTHORIZED,          // The security token didn't match the android id.
  32   HTTP_NOT_OK,                // HTTP status was not OK.
  33   RESPONSE_PARSING_FAILED,    // Check in response parsing failed.
  34   ZERO_ID_OR_TOKEN,           // Either returned android id or security token
  35                               // was zero.
  36   // NOTE: always keep this entry at the end. Add new status types only
  37   // immediately above this line. Make sure to update the corresponding
  38   // histogram enum accordingly.
  39   STATUS_COUNT
  40 };
  41
  42 // Returns string representation of enum CheckinRequestStatus.
  43 std::string GetCheckinRequestStatusString(CheckinRequestStatus status) {
  44   switch (status) {
  45     case SUCCESS:
  46       return "SUCCESS";
  47     case URL_FETCHING_FAILED:
  48       return "URL_FETCHING_FAILED";
  49     case HTTP_BAD_REQUEST:
  50       return "HTTP_BAD_REQUEST";
  51     case HTTP_UNAUTHORIZED:
  52       return "HTTP_UNAUTHORIZED";
  53     case HTTP_NOT_OK:
  54       return "HTTP_NOT_OK";
  55     case RESPONSE_PARSING_FAILED:
  56       return "RESPONSE_PARSING_FAILED";
  57     case ZERO_ID_OR_TOKEN:
  58       return "ZERO_ID_OR_TOKEN";
  59     default:
  60       NOTREACHED();
  61       return "UNKNOWN_STATUS";
  62   }
  63 }
  64
  65 // Records checkin status to both stats recorder and reports to UMA.
  66 void RecordCheckinStatusAndReportUMA(CheckinRequestStatus status,
  67                                      GCMStatsRecorder* recorder,
  68                                      bool will_retry) {
  69   UMA_HISTOGRAM_ENUMERATION("GCM.CheckinRequestStatus", status, STATUS_COUNT);
  70   if (status == SUCCESS)
  71     recorder->RecordCheckinSuccess();
  72   else {
  73     recorder->RecordCheckinFailure(GetCheckinRequestStatusString(status),
  74                                    will_retry);
  75   }
  76 }
  77
  78 }  // namespace
  79
  80 CheckinRequest::RequestInfo::RequestInfo(
  81     uint64 android_id,
  82     uint64 security_token,
  83     const std::string& settings_digest,
  84     const std::vector<std::string>& account_ids,
  85     const checkin_proto::ChromeBuildProto& chrome_build_proto)
  86     : android_id(android_id),
  87       security_token(security_token),
  88       settings_digest(settings_digest),
  89       account_ids(account_ids),
  90       chrome_build_proto(chrome_build_proto) {
  91 }
  92
  93 CheckinRequest::RequestInfo::~RequestInfo() {}
  94
  95 CheckinRequest::CheckinRequest(
  96     const GURL& checkin_url,
  97     const RequestInfo& request_info,
  98     const net::BackoffEntry::Policy& backoff_policy,
  99     const CheckinRequestCallback& callback,
 100     net::URLRequestContextGetter* request_context_getter,
 101     GCMStatsRecorder* recorder)
 102     : request_context_getter_(request_context_getter),
 103       callback_(callback),
 104       backoff_entry_(&backoff_policy),
 105       checkin_url_(checkin_url),
 106       request_info_(request_info),
 107       recorder_(recorder),
 108       weak_ptr_factory_(this) {
 109 }
 110
 111 CheckinRequest::~CheckinRequest() {}
 112
 113 void CheckinRequest::Start() {
 114   DCHECK(!url_fetcher_.get());
 115
 116   checkin_proto::AndroidCheckinRequest request;
 117   request.set_id(request_info_.android_id);
 118   request.set_security_token(request_info_.security_token);
 119   request.set_user_serial_number(kDefaultUserSerialNumber);
 120   request.set_version(kRequestVersionValue);
 121   if (!request_info_.settings_digest.empty())
 122     request.set_digest(request_info_.settings_digest);
 123
 124   checkin_proto::AndroidCheckinProto* checkin = request.mutable_checkin();
 125   checkin->mutable_chrome_build()->CopyFrom(request_info_.chrome_build_proto);
 126 #if defined(CHROME_OS)
 127   checkin->set_type(checkin_proto::DEVICE_CHROME_OS);
 128 #else
 129   checkin->set_type(checkin_proto::DEVICE_CHROME_BROWSER);
 130 #endif
 131
 132   for (std::vector<std::string>::const_iterator iter =
 133            request_info_.account_ids.begin();
 134        iter != request_info_.account_ids.end();
 135        ++iter) {
 136     request.add_account_cookie("[" + *iter + "]");
 137   }
 138
 139   std::string upload_data;
 140   CHECK(request.SerializeToString(&upload_data));
 141
 142   url_fetcher_.reset(
 143       net::URLFetcher::Create(checkin_url_, net::URLFetcher::POST, this));
 144   url_fetcher_->SetRequestContext(request_context_getter_);
 145   url_fetcher_->SetUploadData(kRequestContentType, upload_data);
 146   recorder_->RecordCheckinInitiated(request_info_.android_id);
 147   request_start_time_ = base::TimeTicks::Now();
 148   url_fetcher_->Start();
 149 }
 150
 151 void CheckinRequest::RetryWithBackoff(bool update_backoff) {
 152   if (update_backoff) {
 153     backoff_entry_.InformOfRequest(false);
 154     url_fetcher_.reset();
 155   }
 156
 157   if (backoff_entry_.ShouldRejectRequest()) {
 158     DVLOG(1) << "Delay GCM checkin for: "
 159              << backoff_entry_.GetTimeUntilRelease().InMilliseconds()
 160              << " milliseconds.";
 161     recorder_->RecordCheckinDelayedDueToBackoff(
 162         backoff_entry_.GetTimeUntilRelease().InMilliseconds());
 163     base::MessageLoop::current()->PostDelayedTask(
 164         FROM_HERE,
 165         base::Bind(&CheckinRequest::RetryWithBackoff,
 166                    weak_ptr_factory_.GetWeakPtr(),
 167                    false),
 168         backoff_entry_.GetTimeUntilRelease());
 169     return;
 170   }
 171
 172   Start();
 173 }
 174
 175 void CheckinRequest::OnURLFetchComplete(const net::URLFetcher* source) {
 176   std::string response_string;
 177   checkin_proto::AndroidCheckinResponse response_proto;
 178   if (!source->GetStatus().is_success()) {
 179     LOG(ERROR) << "Failed to get checkin response. Fetcher failed. Retrying.";
 180     RecordCheckinStatusAndReportUMA(URL_FETCHING_FAILED, recorder_, true);
 181     RetryWithBackoff(true);
 182     return;
 183   }
 184
 185   net::HttpStatusCode response_status = static_cast<net::HttpStatusCode>(
 186       source->GetResponseCode());
 187   if (response_status == net::HTTP_BAD_REQUEST ||
 188       response_status == net::HTTP_UNAUTHORIZED) {
 189     // BAD_REQUEST indicates that the request was malformed.
 190     // UNAUTHORIZED indicates that security token didn't match the android id.
 191     LOG(ERROR) << "No point retrying the checkin with status: "
 192                << response_status << ". Checkin failed.";
 193     CheckinRequestStatus status = response_status == net::HTTP_BAD_REQUEST ?
 194         HTTP_BAD_REQUEST : HTTP_UNAUTHORIZED;
 195     RecordCheckinStatusAndReportUMA(status, recorder_, false);
 196     callback_.Run(response_proto);
 197     return;
 198   }
 199
 200   if (response_status != net::HTTP_OK ||
 201       !source->GetResponseAsString(&response_string) ||
 202       !response_proto.ParseFromString(response_string)) {
 203     LOG(ERROR) << "Failed to get checkin response. HTTP Status: "
 204                << response_status << ". Retrying.";
 205     CheckinRequestStatus status = response_status != net::HTTP_OK ?
 206         HTTP_NOT_OK : RESPONSE_PARSING_FAILED;
 207     RecordCheckinStatusAndReportUMA(status, recorder_, true);
 208     RetryWithBackoff(true);
 209     return;
 210   }
 211
 212   if (!response_proto.has_android_id() ||
 213       !response_proto.has_security_token() ||
 214       response_proto.android_id() == 0 ||
 215       response_proto.security_token() == 0) {
 216     LOG(ERROR) << "Android ID or security token is 0. Retrying.";
 217     RecordCheckinStatusAndReportUMA(ZERO_ID_OR_TOKEN, recorder_, true);
 218     RetryWithBackoff(true);
 219     return;
 220   }
 221
 222   RecordCheckinStatusAndReportUMA(SUCCESS, recorder_, false);
 223   UMA_HISTOGRAM_COUNTS("GCM.CheckinRetryCount",
 224                        backoff_entry_.failure_count());
 225   UMA_HISTOGRAM_TIMES("GCM.CheckinCompleteTime",
 226                       base::TimeTicks::Now() - request_start_time_);
 227   callback_.Run(response_proto);
 228 }
 229
 230 }  // namespace gcm