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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "snapshots.h"
#include <vespa/vespalib/stllike/string.h>
#include <vespa/vespalib/data/slime/slime.h>
namespace vespalib {
namespace metrics {
/**
* utility for converting a snapshot to JSON format
* (which can be inserted into /state/v1/metrics page).
**/
class JsonFormatter
{
private:
using Cursor = vespalib::slime::Cursor;
vespalib::Slime _data;
Cursor& _top;
double _snapLen;
void handle(const Snapshot &snapshot, Cursor &target);
void handle(const PointSnapshot &snapshot, Cursor &target);
void handle(const CounterSnapshot &snapshot, Cursor &target);
void handle(const GaugeSnapshot &snapshot, Cursor &target);
public:
JsonFormatter(const Snapshot &snapshot);
vespalib::string asString() const {
return _data.toString();
}
};
} // namespace vespalib::metrics
} // namespace vespalib
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