res/prometheus/cli.c File Reference

Prometheus CLI Commands. More...

#include "asterisk.h"
#include "asterisk/cli.h"
#include "asterisk/localtime.h"
#include "asterisk/res_prometheus.h"
#include "prometheus_internal.h"

Include dependency graph for res/prometheus/cli.c:

Go to the source code of this file.

Functions
int	cli_init (void)
	Initialize CLI command. More...
static void	cli_unload_cb (void)
static char *	prometheus_show_metrics (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	prometheus_show_status (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)

Variables
static struct ast_cli_entry	cli_prometheus []
static struct prometheus_metrics_provider	provider

Detailed Description

Prometheus CLI Commands.

Author

Matt Jordan mjord.nosp@m.an@d.nosp@m.igium.nosp@m..com

Definition in file res/prometheus/cli.c.

Function Documentation

cli_init()

int cli_init

(

void

)

Initialize CLI command.

Return values

0	success
-1	error

Definition at line 137 of file res/prometheus/cli.c.

{
    prometheus_metrics_provider_register(&provider);
    ast_cli_register_multiple(cli_prometheus, ARRAY_LEN(cli_prometheus));
 
    return 0;
}

References ARRAY_LEN, ast_cli_register_multiple, cli_prometheus, prometheus_metrics_provider_register(), and provider.

Referenced by load_module().

cli_unload_cb()

static void cli_unload_cb ( void  )

static

Definition at line 123 of file res/prometheus/cli.c.

{
    ast_cli_unregister_multiple(cli_prometheus, ARRAY_LEN(cli_prometheus));
}

References ARRAY_LEN, ast_cli_unregister_multiple(), and cli_prometheus.

prometheus_show_metrics()

static char * prometheus_show_metrics ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 33 of file res/prometheus/cli.c.

{
    struct ast_str *response;
 
    if (cmd == CLI_INIT) {
        e->command = "prometheus show metrics";
        e->usage =
            "Usage: prometheus show metrics\n"
            "       Displays the current metrics and their values,\n"
            "       without counting as an actual scrape.\n";
            return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc != 3) {
        return CLI_SHOWUSAGE;
    }
 
    response = prometheus_scrape_to_string();
    if (!response) {
        ast_cli(a->fd, "Egads! An unknown error occurred getting the metrics\n");
        return CLI_FAILURE;
    }
    ast_cli(a->fd, "%s\n", ast_str_buffer(response));
    ast_free(response);
 
    return CLI_SUCCESS;
}

References a, ast_cli(), ast_free, ast_str_buffer(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, NULL, prometheus_scrape_to_string(), and ast_cli_entry::usage.

prometheus_show_status()

static char * prometheus_show_status ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 63 of file res/prometheus/cli.c.

{
    struct prometheus_general_config *config;
    char time_buffer[64];
    struct ast_tm last_scrape_local;
    struct timeval last_scrape_time;
    int64_t scrape_duration;
 
    if (cmd == CLI_INIT) {
        e->command = "prometheus show status";
        e->usage =
            "Usage: prometheus show status\n"
            "       Displays the status of metrics collection.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc != 3) {
        return CLI_SHOWUSAGE;
    }
 
    config = prometheus_general_config_get();
 
    ast_cli(a->fd, "Prometheus Metrics Status:\n");
    ast_cli(a->fd, "\tEnabled: %s\n", config->enabled ? "Yes" : "No");
    ast_cli(a->fd, "\tURI: %s\n", config->uri);
    ast_cli(a->fd, "\tBasic Auth: %s\n", ast_strlen_zero(config->auth_username) ? "No": "Yes");
    ast_cli(a->fd, "\tLast Scrape Time: ");
    last_scrape_time = prometheus_last_scrape_time_get();
    if (last_scrape_time.tv_sec == 0 && last_scrape_time.tv_usec == 0) {
        snprintf(time_buffer, sizeof(time_buffer), "%s", "(N/A)");
    } else {
        ast_localtime(&last_scrape_time, &last_scrape_local, NULL);
        ast_strftime(time_buffer, sizeof(time_buffer), "%Y-%m-%d %H:%M:%S", &last_scrape_local);
    }
    ast_cli(a->fd, "%s\n", time_buffer);
 
    ast_cli(a->fd, "\tLast Scrape Duration: ");
    scrape_duration = prometheus_last_scrape_duration_get();
    if (scrape_duration < 0) {
        ast_cli(a->fd, "(N/A)\n");
    } else {
        ast_cli(a->fd, "%" PRIu64 " ms\n", scrape_duration);
    }
 
    ao2_ref(config, -1);
 
    return CLI_SUCCESS;
}

References a, ao2_ref, ast_cli(), ast_localtime(), ast_strftime(), ast_strlen_zero(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, config, NULL, prometheus_general_config_get(), prometheus_last_scrape_duration_get(), prometheus_last_scrape_time_get(), and ast_cli_entry::usage.

Variable Documentation

cli_prometheus

struct ast_cli_entry cli_prometheus[]

static

Initial value:

= {
    { .handler =  prometheus_show_metrics , .summary =  "Display the current metrics and their values" ,},
    { .handler =  prometheus_show_status , .summary =  "Display the status of Prometheus metrics collection" ,},
}

Definition at line 114 of file res/prometheus/cli.c.

Referenced by cli_init(), and cli_unload_cb().

provider

struct prometheus_metrics_provider provider

static

Initial value:

= {
    .name = "cli",
    .unload_cb = cli_unload_cb,
}

Definition at line 132 of file res/prometheus/cli.c.

Referenced by cli_init().