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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
#define CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
#include "base/basictypes.h"
#include "base/metrics/histogram_base.h"
#include "base/metrics/histogram_flattener.h"
#include "base/metrics/histogram_snapshot_manager.h"
#include "chrome/common/metrics/metrics_log_manager.h"
namespace base {
class HistogramSamples;
} // namespace base
// This class provides base functionality for logging metrics data.
// TODO(ananta): Factor out more common code from chrome and chrome frame
// metrics service into this class.
class MetricsServiceBase : public base::HistogramFlattener {
public:
// HistogramFlattener interface (override) methods.
virtual void RecordDelta(const base::HistogramBase& histogram,
const base::HistogramSamples& snapshot) OVERRIDE;
virtual void InconsistencyDetected(
base::HistogramBase::Inconsistency problem) OVERRIDE;
virtual void UniqueInconsistencyDetected(
base::HistogramBase::Inconsistency problem) OVERRIDE;
virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE;
protected:
MetricsServiceBase();
virtual ~MetricsServiceBase();
// The metrics servers' URLs, for XML and protobuf uploads.
static const char kServerUrlXml[];
static const char kServerUrlProto[];
// The MIME types for the uploaded metrics data, for XML and protobuf uploads.
static const char kMimeTypeXml[];
static const char kMimeTypeProto[];
// Record complete list of histograms into the current log.
// Called when we close a log.
void RecordCurrentHistograms();
// Manager for the various in-flight logs.
MetricsLogManager log_manager_;
private:
// |histogram_snapshot_manager_| prepares histogram deltas for transmission.
base::HistogramSnapshotManager histogram_snapshot_manager_;
DISALLOW_COPY_AND_ASSIGN(MetricsServiceBase);
};
#endif // CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
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