1 // Copyright (c) 2012 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 CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_ 6 #define CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_ 7 8 #include "base/basictypes.h" 9 #include "base/metrics/histogram_base.h" 10 #include "base/metrics/histogram_flattener.h" 11 #include "base/metrics/histogram_snapshot_manager.h" 12 #include "chrome/common/metrics/metrics_log_manager.h" 13 14 namespace base { 15 class HistogramSamples; 16 } // namespace base 17 18 // This class provides base functionality for logging metrics data. 19 // TODO(ananta): Factor out more common code from chrome and chrome frame 20 // metrics service into this class. 21 class MetricsServiceBase : public base::HistogramFlattener { 22 public: 23 // HistogramFlattener interface (override) methods. 24 virtual void RecordDelta(const base::HistogramBase& histogram, 25 const base::HistogramSamples& snapshot) OVERRIDE; 26 virtual void InconsistencyDetected( 27 base::HistogramBase::Inconsistency problem) OVERRIDE; 28 virtual void UniqueInconsistencyDetected( 29 base::HistogramBase::Inconsistency problem) OVERRIDE; 30 virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE; 31 32 protected: 33 MetricsServiceBase(); 34 virtual ~MetricsServiceBase(); 35 36 // The metrics server's URL. 37 static const char kServerUrl[]; 38 39 // The MIME type for the uploaded metrics data. 40 static const char kMimeType[]; 41 42 // Record complete list of histograms into the current log. 43 // Called when we close a log. 44 void RecordCurrentHistograms(); 45 46 // Manager for the various in-flight logs. 47 MetricsLogManager log_manager_; 48 49 private: 50 // |histogram_snapshot_manager_| prepares histogram deltas for transmission. 51 base::HistogramSnapshotManager histogram_snapshot_manager_; 52 53 DISALLOW_COPY_AND_ASSIGN(MetricsServiceBase); 54 }; 55 56 #endif // CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_ 57
