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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 #ifndef COMPONENTS_METRICS_NET_NET_METRICS_LOG_UPLOADER_H_
      6 #define COMPONENTS_METRICS_NET_NET_METRICS_LOG_UPLOADER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/memory/scoped_ptr.h"
     11 #include "components/metrics/metrics_log_uploader.h"
     12 #include "net/url_request/url_fetcher_delegate.h"
     13 
     14 namespace net {
     15 class URLFetcher;
     16 class URLRequestContextGetter;
     17 }
     18 
     19 namespace metrics {
     20 
     21 // Implementation of MetricsLogUploader using the Chrome network stack.
     22 class NetMetricsLogUploader : public MetricsLogUploader,
     23                               public net::URLFetcherDelegate {
     24  public:
     25   // Constructs a NetMetricsLogUploader with the specified request context and
     26   // other params (see comments on MetricsLogUploader for details). The caller
     27   // must ensure that |request_context_getter| remains valid for the lifetime
     28   // of this class.
     29   NetMetricsLogUploader(net::URLRequestContextGetter* request_context_getter,
     30                         const std::string& server_url,
     31                         const std::string& mime_type,
     32                         const base::Callback<void(int)>& on_upload_complete);
     33   virtual ~NetMetricsLogUploader();
     34 
     35   // MetricsLogUploader:
     36   virtual bool UploadLog(const std::string& compressed_log_data,
     37                          const std::string& log_hash) OVERRIDE;
     38 
     39  private:
     40   // net::URLFetcherDelegate:
     41   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
     42 
     43   // The request context for fetches done using the network stack.
     44   net::URLRequestContextGetter* const request_context_getter_;
     45 
     46   // The outstanding transmission appears as a URL Fetch operation.
     47   scoped_ptr<net::URLFetcher> current_fetch_;
     48 
     49   DISALLOW_COPY_AND_ASSIGN(NetMetricsLogUploader);
     50 };
     51 
     52 }  // namespace metrics
     53 
     54 #endif  // COMPONENTS_METRICS_NET_NET_METRICS_LOG_UPLOADER_H_
     55