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[chromium-blink-merge.git] / chrome / common / metrics / metrics_service_base.h
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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.
5 #ifndef CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
6 #define CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
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"
14 namespace base {
15 class HistogramSamples;
16 } // namespace base
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;
32 protected:
33 MetricsServiceBase();
34 virtual ~MetricsServiceBase();
36 // The metrics server's URL.
37 static const char kServerUrl[];
39 // The MIME type for the uploaded metrics data.
40 static const char kMimeType[];
42 // Record complete list of histograms into the current log.
43 // Called when we close a log.
44 void RecordCurrentHistograms();
46 // Manager for the various in-flight logs.
47 MetricsLogManager log_manager_;
49 private:
50 // |histogram_snapshot_manager_| prepares histogram deltas for transmission.
51 base::HistogramSnapshotManager histogram_snapshot_manager_;
53 DISALLOW_COPY_AND_ASSIGN(MetricsServiceBase);
56 #endif // CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_