summary.h

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/*
 * Copyright (c) 2024 Mustafa Abdullah Kus, Sparse Technology
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_PROMETHEUS_SUMMARY_H_
#define ZEPHYR_INCLUDE_PROMETHEUS_SUMMARY_H_
 
#include <zephyr/sys/iterable_sections.h>
#include <zephyr/net/prometheus/metric.h>
 
#include <stddef.h>
 
struct prometheus_summary_quantile {
        double quantile;
        double value;
};
 
struct prometheus_summary {
        struct prometheus_metric *base;
        struct prometheus_summary_quantile *quantiles;
        size_t num_quantiles;
        double sum;
        unsigned long count;
};
 
#define PROMETHEUS_SUMMARY_DEFINE(_name, _detail)                                                  \
        static STRUCT_SECTION_ITERABLE(prometheus_summary, _name) = {.base = (void *)(_detail),    \
                                                                     .quantiles = NULL,            \
                                                                     .num_quantiles = 0,           \
                                                                     .sum = 0,                     \
                                                                     .count = 0}
 
int prometheus_summary_observe(struct prometheus_summary *summary, double value);
 
#endif /* ZEPHYR_INCLUDE_PROMETHEUS_SUMMARY_H_ */