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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/metrics/valuemetric.h>
#include <vespa/metrics/countmetric.h>
#include <vespa/metrics/metricset.h>
#include <mutex>
namespace search::engine {
/**
* Metrics for the proto rpc adapter component implementing the search
* protocol in proton.
**/
class SearchProtocolMetrics : public metrics::MetricSet
{
public:
// sub-metrics for query request/reply
struct QueryMetrics : metrics::MetricSet {
metrics::DoubleAverageMetric latency;
metrics::LongAverageMetric request_size;
metrics::LongAverageMetric reply_size;
QueryMetrics(metrics::MetricSet *parent);
~QueryMetrics() override;
};
// value-wrapper used when collecting and reporting query metrics
struct QueryStats {
double latency;
size_t request_size;
size_t reply_size;
QueryStats() : latency(0.0), request_size(0), reply_size(0) {}
};
// sub-metrics for docsum request/reply
struct DocsumMetrics : metrics::MetricSet {
metrics::DoubleAverageMetric latency;
metrics::LongAverageMetric request_size;
metrics::LongAverageMetric reply_size;
metrics::LongCountMetric requested_documents;
DocsumMetrics(metrics::MetricSet *parent);
~DocsumMetrics() override;
};
// value-wrapper used when collecting and reporting docsum metrics
struct DocsumStats {
double latency;
size_t request_size;
size_t reply_size;
size_t requested_documents;
DocsumStats() : latency(0.0), request_size(0), reply_size(0), requested_documents(0) {}
};
private:
std::mutex _lock;
QueryMetrics _query;
DocsumMetrics _docsum;
public:
SearchProtocolMetrics();
~SearchProtocolMetrics() override;
const QueryMetrics &query() const { return _query; }
const DocsumMetrics &docsum() const { return _docsum; }
void update_query_metrics(const QueryStats &stats);
void update_docsum_metrics(const DocsumStats &stats);
};
}
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