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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "scrape.h"
#include "util.h"
static void filefd_collect(scrape_req *req, void *ctx);
const struct collector filefd_collector = {
.name = "filefd",
.collect = filefd_collect,
};
static void filefd_collect(scrape_req *req, void *ctx) {
(void) ctx;
FILE *f;
// scan /proc/sys/fs/file-nr for metrics
f = fopen(PATH("/proc/sys/fs/file-nr"), "r");
if (!f)
return;
double alloc, ignored, max;
if (fscanf(f, "%lf %lf %lf", &alloc, &ignored, &max) == 3) {
scrape_write(req, "node_filefd_allocated", 0, alloc);
scrape_write(req, "node_filefd_maximum", 0, max);
}
fclose(f);
}
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