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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Helper class to aggregate the collected in-memory stats to persistent
// storage.
#ifndef O3D_STATSREPORT_AGGREGATOR_H__
#define O3D_STATSREPORT_AGGREGATOR_H__
#include "metrics.h"
namespace stats_report {
// TODO: Refactor to avoid cross platform code duplication.
// Wrapper class and interface for metrics aggregation. This is a platform
// independent class and needs to be subclassed for various platforms and/or
// metrics persistence methods
class MetricsAggregator {
public:
// Aggregate all metrics in the associated collection
// @returns true iff aggregation started successfully, false otherwise.
bool AggregateMetrics();
protected:
MetricsAggregator();
explicit MetricsAggregator(const MetricCollection &coll);
virtual ~MetricsAggregator();
// Start aggregation. Override this to grab locks, open files, whatever
// needs to happen or can expedite the individual aggregate steps.
// @return true on success, false on failure.
// @note aggregation will not progress if this function returns false
virtual bool StartAggregation();
virtual void EndAggregation();
virtual void Aggregate(CountMetric *metric) = 0;
virtual void Aggregate(TimingMetric *metric) = 0;
virtual void Aggregate(IntegerMetric *metric) = 0;
virtual void Aggregate(BoolMetric *metric) = 0;
private:
const MetricCollection &coll_;
DISALLOW_COPY_AND_ASSIGN(MetricsAggregator);
};
} // namespace stats_report
#endif // O3D_STATSREPORT_AGGREGATOR_H__
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