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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_METRICS_LOG_UPLOADER_H_
      6 #define COMPONENTS_METRICS_METRICS_LOG_UPLOADER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/callback.h"
     12 #include "base/macros.h"
     13 
     14 namespace metrics {
     15 
     16 // MetricsLogUploader is an abstract base class for uploading UMA logs on behalf
     17 // of MetricsService.
     18 class MetricsLogUploader {
     19  public:
     20   // Constructs the uploader that will upload logs to the specified |server_url|
     21   // with the given |mime_type|. The |on_upload_complete| callback will be
     22   // called with the HTTP response code of the upload or with -1 on an error.
     23   MetricsLogUploader(const std::string& server_url,
     24                      const std::string& mime_type,
     25                      const base::Callback<void(int)>& on_upload_complete);
     26   virtual ~MetricsLogUploader();
     27 
     28   // Uploads a log with the specified |compressed_log_data| and |log_hash|.
     29   // |log_hash| is expected to be the hex-encoded SHA1 hash of the log data
     30   // before compression.
     31   virtual bool UploadLog(const std::string& compressed_log_data,
     32                          const std::string& log_hash) = 0;
     33 
     34  protected:
     35   const std::string server_url_;
     36   const std::string mime_type_;
     37   const base::Callback<void(int)> on_upload_complete_;
     38 
     39  private:
     40   DISALLOW_COPY_AND_ASSIGN(MetricsLogUploader);
     41 };
     42 
     43 }  // namespace metrics
     44 
     45 #endif  // COMPONENTS_METRICS_METRICS_LOG_UPLOADER_H_
     46