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// SPDX-License-Identifier: GPL-3.0-or-later
#include "charts2json.h"
// generate JSON for the /api/v1/charts API call
static inline const char* get_release_channel() {
static int use_stable = -1;
if (use_stable == -1) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/.environment", netdata_configured_user_config_dir);
procfile *ff = procfile_open(filename, "=", PROCFILE_FLAG_DEFAULT);
if(!ff) {
use_stable=1;
} else {
procfile_set_quotes(ff, "'\"");
ff = procfile_readall(ff);
if(!ff) {
use_stable=1;
} else {
unsigned int i;
for(i = 0; i < procfile_lines(ff); i++) {
if (!procfile_linewords(ff, i)) continue;
if (!strcmp(procfile_lineword(ff, i, 0), "RELEASE_CHANNEL") && !strcmp(procfile_lineword(ff, i, 1), "stable")) {
use_stable = 1;
break;
}
}
procfile_close(ff);
if (use_stable == -1) use_stable = 0;
}
}
}
return (use_stable)?"stable":"nightly";
}
void charts2json(RRDHOST *host, BUFFER *wb) {
static char *custom_dashboard_info_js_filename = NULL;
size_t c, dimensions = 0, memory = 0, alarms = 0;
RRDSET *st;
time_t now = now_realtime_sec();
if(unlikely(!custom_dashboard_info_js_filename))
custom_dashboard_info_js_filename = config_get(CONFIG_SECTION_WEB, "custom dashboard_info.js", "");
buffer_sprintf(wb, "{\n"
"\t\"hostname\": \"%s\""
",\n\t\"version\": \"%s\""
",\n\t\"release_channel\": \"%s\""
",\n\t\"os\": \"%s\""
",\n\t\"timezone\": \"%s\""
",\n\t\"update_every\": %d"
",\n\t\"history\": %ld"
",\n\t\"custom_info\": \"%s\""
",\n\t\"charts\": {"
, host->hostname
, host->program_version
, get_release_channel()
, host->os
, host->timezone
, host->rrd_update_every
, host->rrd_history_entries
, custom_dashboard_info_js_filename
);
c = 0;
rrdhost_rdlock(host);
rrdset_foreach_read(st, host) {
if(rrdset_is_available_for_viewers(st)) {
if(c) buffer_strcat(wb, ",");
buffer_strcat(wb, "\n\t\t\"");
buffer_strcat(wb, st->id);
buffer_strcat(wb, "\": ");
rrdset2json(st, wb, &dimensions, &memory);
c++;
st->last_accessed_time = now;
}
}
RRDCALC *rc;
for(rc = host->alarms; rc ; rc = rc->next) {
if(rc->rrdset)
alarms++;
}
rrdhost_unlock(host);
buffer_sprintf(wb
, "\n\t}"
",\n\t\"charts_count\": %zu"
",\n\t\"dimensions_count\": %zu"
",\n\t\"alarms_count\": %zu"
",\n\t\"rrd_memory_bytes\": %zu"
",\n\t\"hosts_count\": %zu"
",\n\t\"hosts\": ["
, c
, dimensions
, alarms
, memory
, rrd_hosts_available
);
if(unlikely(rrd_hosts_available > 1)) {
rrd_rdlock();
size_t found = 0;
RRDHOST *h;
rrdhost_foreach_read(h) {
if(!rrdhost_should_be_removed(h, host, now)) {
buffer_sprintf(wb
, "%s\n\t\t{"
"\n\t\t\t\"hostname\": \"%s\""
"\n\t\t}"
, (found > 0) ? "," : ""
, h->hostname
);
found++;
}
}
rrd_unlock();
}
else {
buffer_sprintf(wb
, "\n\t\t{"
"\n\t\t\t\"hostname\": \"%s\""
"\n\t\t}"
, host->hostname
);
}
buffer_sprintf(wb, "\n\t]\n}\n");
}
// generate collectors list for the api/v1/info call
struct collector {
char *plugin;
char *module;
};
struct array_printer {
int c;
BUFFER *wb;
};
int print_collector(void *entry, void *data) {
struct array_printer *ap = (struct array_printer *)data;
BUFFER *wb = ap->wb;
struct collector *col=(struct collector *) entry;
if(ap->c) buffer_strcat(wb, ",");
buffer_strcat(wb, "\n\t\t{\n\t\t\t\"plugin\": \"");
buffer_strcat(wb, col->plugin);
buffer_strcat(wb, "\",\n\t\t\t\"module\": \"");
buffer_strcat(wb, col->module);
buffer_strcat(wb, "\"\n\t\t}");
(ap->c)++;
return 0;
}
void chartcollectors2json(RRDHOST *host, BUFFER *wb) {
DICTIONARY *dict = dictionary_create(DICTIONARY_FLAG_SINGLE_THREADED);
RRDSET *st;
char name[500];
time_t now = now_realtime_sec();
rrdhost_rdlock(host);
rrdset_foreach_read(st, host) {
if (rrdset_is_available_for_viewers(st)) {
struct collector col = {
.plugin = st->plugin_name ? st->plugin_name : "",
.module = st->module_name ? st->module_name : ""
};
sprintf(name, "%s:%s", col.plugin, col.module);
dictionary_set(dict, name, &col, sizeof(struct collector));
st->last_accessed_time = now;
}
}
rrdhost_unlock(host);
struct array_printer ap = {
.c = 0,
.wb = wb
};
dictionary_get_all(dict, print_collector, &ap);
dictionary_destroy(dict);
}
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