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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* SPI implementation wrapper to add metrics.
*/
#pragma once
#include "persistenceprovider.h"
#include <vespa/metrics/metricset.h>
#include <vespa/metrics/valuemetric.h>
namespace storage::spi {
class MetricPersistenceProvider : public PersistenceProvider,
public metrics::MetricSet
{
struct ResultMetrics : public metrics::MetricSet {
std::vector<std::unique_ptr<metrics::DoubleAverageMetric> > _metric;
ResultMetrics(const char* opName);
~ResultMetrics();
};
PersistenceProvider* _next;
std::vector<std::unique_ptr<ResultMetrics>> _functionMetrics;
public:
typedef std::unique_ptr<MetricPersistenceProvider> UP;
MetricPersistenceProvider(PersistenceProvider&);
~MetricPersistenceProvider();
void setNextProvider(PersistenceProvider& p) { _next = &p; }
// Implementation of the PersistenceProvider API
Result initialize() override;
PartitionStateListResult getPartitionStates() const override;
BucketIdListResult listBuckets(BucketSpace bucketSpace, PartitionId) const override;
Result setClusterState(BucketSpace bucketSpace, const ClusterState&) override;
Result setActiveState(const Bucket&, BucketInfo::ActiveState) override;
BucketInfoResult getBucketInfo(const Bucket&) const override;
Result put(const Bucket&, Timestamp, const DocumentSP&, Context&) override;
RemoveResult remove(const Bucket&, Timestamp, const DocumentId&, Context&) override;
RemoveResult removeIfFound(const Bucket&, Timestamp, const DocumentId&, Context&) override;
Result removeEntry(const Bucket&, Timestamp, Context&) override;
UpdateResult update(const Bucket&, Timestamp, const DocumentUpdateSP&, Context&) override;
Result flush(const Bucket&, Context&) override;
GetResult get(const Bucket&, const document::FieldSet&, const DocumentId&, Context&) const override;
CreateIteratorResult createIterator(const Bucket&, const document::FieldSet&, const Selection&,
IncludedVersions, Context&) override;
IterateResult iterate(IteratorId, uint64_t maxByteSize, Context&) const override;
Result destroyIterator(IteratorId, Context&) override;
Result createBucket(const Bucket&, Context&) override;
Result deleteBucket(const Bucket&, Context&) override;
BucketIdListResult getModifiedBuckets(BucketSpace bucketSpace) const override;
Result maintain(const Bucket&, MaintenanceLevel level) override;
Result split(const Bucket& source, const Bucket& target1, const Bucket& target2, Context&) override;
Result join(const Bucket& source1, const Bucket& source2, const Bucket& target, Context&) override;
Result move(const Bucket&, PartitionId target, Context&) override;
private:
void defineResultMetrics(int index, const char* name);
};
}
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