These are the remaining issues found in /res. ASTERISK-29761 Change-Id: I572e6019c422780dde5ce8448b6c85c77af6046d
248 lines
6.8 KiB
C
248 lines
6.8 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2019 Sangoma, Inc.
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*
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* Matt Jordan <mjordan@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \brief Prometheus Channel Metrics
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*
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* \author Matt Jordan <mjordan@digium.com>
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*
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*/
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#include "asterisk.h"
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#include "asterisk/res_prometheus.h"
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#include "asterisk/stasis_channels.h"
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#include "asterisk/pbx.h"
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#include "prometheus_internal.h"
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#define CHANNELS_STATE_HELP "Individual channel states. 0=down; 1=reserved; 2=offhook; 3=dialing; 4=ring; 5=ringing; 6=up; 7=busy; 8=dialing_offhook; 9=prering."
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#define CHANNELS_DURATION_HELP "Individual channel durations (in seconds)."
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/*!
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* \internal
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* \brief Callback function to get a channel's current state
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*
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* \param metric The metric to populate
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* \param snapshot Channel snapshot
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*/
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static void get_channel_state(struct prometheus_metric *metric, struct ast_channel_snapshot *snapshot)
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{
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snprintf(metric->value, sizeof(metric->value), "%d", snapshot->state);
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}
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/*!
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* \internal
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* \brief Callback function to get a channel's current duration
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*
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* \param metric The metric to populate
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* \param snapshot Channel snapshot
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*/
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static void get_channel_duration(struct prometheus_metric *metric, struct ast_channel_snapshot *snapshot)
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{
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struct timeval now = ast_tvnow();
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int64_t duration = ast_tvdiff_sec(now, snapshot->base->creationtime);
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snprintf(metric->value, sizeof(metric->value), "%" PRIu64, duration);
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}
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/*!
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* \internal
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* \brief Helper struct for generating individual channel stats
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*/
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struct channel_metric_defs {
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/*!
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* \brief Help text to display
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*/
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const char *help;
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/*!
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* \brief Name of the metric
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*/
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const char *name;
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/*!
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* \brief Callback function to generate a metric value for a given channel
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*/
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void (* const get_value)(struct prometheus_metric *metric, struct ast_channel_snapshot *snapshot);
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} channel_metric_defs[] = {
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{
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.help = CHANNELS_STATE_HELP,
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.name = "asterisk_channels_state",
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.get_value = get_channel_state,
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},
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{
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.help = CHANNELS_DURATION_HELP,
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.name = "asterisk_channels_duration_seconds",
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.get_value = get_channel_duration,
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},
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};
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static void get_total_call_count(struct prometheus_metric *metric)
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{
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snprintf(metric->value, sizeof(metric->value), "%d", ast_processed_calls());
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}
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static void get_current_call_count(struct prometheus_metric *metric)
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{
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snprintf(metric->value, sizeof(metric->value), "%d", ast_active_calls());
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}
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/*!
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* \internal
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* \brief Channel based metrics that are always available
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*/
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static struct prometheus_metric global_channel_metrics[] = {
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PROMETHEUS_METRIC_STATIC_INITIALIZATION(
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PROMETHEUS_METRIC_COUNTER,
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"asterisk_calls_sum",
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"Total call count.",
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&get_total_call_count
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),
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PROMETHEUS_METRIC_STATIC_INITIALIZATION(
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PROMETHEUS_METRIC_GAUGE,
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"asterisk_calls_count",
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"Current call count.",
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&get_current_call_count
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),
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};
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/*!
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* \internal
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* \brief Callback invoked when Prometheus scrapes the server
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*
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* \param response The response to populate with formatted metrics
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*/
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static void channels_scrape_cb(struct ast_str **response)
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{
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struct ao2_container *channel_cache;
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struct ao2_container *channels;
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struct ao2_iterator it_chans;
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struct ast_channel_snapshot *snapshot;
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struct prometheus_metric *channel_metrics;
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char eid_str[32];
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int num_channels;
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int i, j;
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struct prometheus_metric channel_count = PROMETHEUS_METRIC_STATIC_INITIALIZATION(
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PROMETHEUS_METRIC_GAUGE,
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"asterisk_channels_count",
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"Current channel count.",
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NULL
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);
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ast_eid_to_str(eid_str, sizeof(eid_str), &ast_eid_default);
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channel_cache = ast_channel_cache_all();
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if (!channel_cache) {
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return;
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}
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channels = ao2_container_clone(channel_cache, 0);
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ao2_ref(channel_cache, -1);
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if (!channels) {
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return;
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}
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num_channels = ao2_container_count(channels);
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/* Channel count */
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PROMETHEUS_METRIC_SET_LABEL(&channel_count, 0, "eid", eid_str);
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snprintf(channel_count.value, sizeof(channel_count.value), "%d", num_channels);
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prometheus_metric_to_string(&channel_count, response);
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/* Global call values */
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for (i = 0; i < ARRAY_LEN(global_channel_metrics); i++) {
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PROMETHEUS_METRIC_SET_LABEL(&global_channel_metrics[i], 0, "eid", eid_str);
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global_channel_metrics[i].get_metric_value(&global_channel_metrics[i]);
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prometheus_metric_to_string(&global_channel_metrics[i], response);
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}
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if (num_channels == 0) {
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ao2_ref(channels, -1);
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return;
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}
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/* Channel dependent values */
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channel_metrics = ast_calloc(ARRAY_LEN(channel_metric_defs) * num_channels, sizeof(*channel_metrics));
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if (!channel_metrics) {
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ao2_ref(channels, -1);
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return;
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}
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it_chans = ao2_iterator_init(channels, 0);
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for (i = 0; (snapshot = ao2_iterator_next(&it_chans)); ao2_ref(snapshot, -1), i++) {
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for (j = 0; j < ARRAY_LEN(channel_metric_defs); j++) {
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int index = i * ARRAY_LEN(channel_metric_defs) + j;
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channel_metrics[index].type = PROMETHEUS_METRIC_GAUGE;
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ast_copy_string(channel_metrics[index].name, channel_metric_defs[j].name, sizeof(channel_metrics[index].name));
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channel_metrics[index].help = channel_metric_defs[j].help;
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PROMETHEUS_METRIC_SET_LABEL(&channel_metrics[index], 0, "eid", eid_str);
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PROMETHEUS_METRIC_SET_LABEL(&channel_metrics[index], 1, "name", (snapshot->base->name));
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PROMETHEUS_METRIC_SET_LABEL(&channel_metrics[index], 2, "id", (snapshot->base->uniqueid));
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PROMETHEUS_METRIC_SET_LABEL(&channel_metrics[index], 3, "type", (snapshot->base->type));
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if (snapshot->peer) {
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PROMETHEUS_METRIC_SET_LABEL(&channel_metrics[index], 4, "linkedid", (snapshot->peer->linkedid));
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}
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channel_metric_defs[j].get_value(&channel_metrics[index], snapshot);
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if (i > 0) {
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AST_LIST_INSERT_TAIL(&channel_metrics[j].children, &channel_metrics[index], entry);
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}
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}
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}
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ao2_iterator_destroy(&it_chans);
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for (j = 0; j < ARRAY_LEN(channel_metric_defs); j++) {
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prometheus_metric_to_string(&channel_metrics[j], response);
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}
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ast_free(channel_metrics);
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ao2_ref(channels, -1);
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}
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struct prometheus_callback channels_callback = {
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.name = "Channels callback",
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.callback_fn = channels_scrape_cb,
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};
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/*!
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* \internal
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* \brief Callback invoked when the core module is unloaded
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*/
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static void channel_metrics_unload_cb(void)
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{
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prometheus_callback_unregister(&channels_callback);
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}
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/*!
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* \internal
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* \brief Metrics provider definition
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*/
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static struct prometheus_metrics_provider provider = {
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.name = "channels",
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.unload_cb = channel_metrics_unload_cb,
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};
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int channel_metrics_init(void)
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{
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prometheus_metrics_provider_register(&provider);
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prometheus_callback_register(&channels_callback);
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return 0;
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}
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