tests/regression/tools/health/health_check.c

   1 /*
   2  * Copyright (C) 2012 - Christian Babeux <christian.babeux@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License, version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 51
  15  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21
  22 #include <lttng/health.h>
  23
  24 static const char *relayd_path;
  25
  26 static
  27 int check_component(struct lttng_health *lh, const char *component_name,
  28                 int ok_if_not_running)
  29 {
  30         const struct lttng_health_thread *thread;
  31         int nr_threads, i, status;
  32
  33         if (lttng_health_query(lh)) {
  34                 if (ok_if_not_running) {
  35                         return 0;
  36                 }
  37                 fprintf(stderr, "Error querying %s health\n",
  38                         component_name);
  39                 return -1;
  40         }
  41         status = lttng_health_state(lh);
  42         if (!status) {
  43                 return status;
  44         }
  45
  46         nr_threads = lttng_health_get_nr_threads(lh);
  47         if (nr_threads < 0) {
  48                 fprintf(stderr, "Error getting number of threads\n");
  49                 return -1;
  50         }
  51
  52         printf("Component \"%s\" is in error.\n", component_name);
  53         for (i = 0; i < nr_threads; i++) {
  54                 int thread_state;
  55
  56                 thread = lttng_health_get_thread(lh, i);
  57                 if (!thread) {
  58                         fprintf(stderr, "Error getting thread %d\n", i);
  59                         return -1;
  60                 }
  61                 thread_state = lttng_health_thread_state(thread);
  62                 if (!thread_state) {
  63                         continue;
  64                 }
  65                 printf("Thread \"%s\" is not responding in component \"%s\".\n",
  66                         lttng_health_thread_name(thread),
  67                         component_name);
  68
  69         }
  70         return status;
  71 }
  72
  73 static
  74 int check_sessiond(void)
  75 {
  76         struct lttng_health *lh;
  77         int status;
  78
  79         lh = lttng_health_create_sessiond();
  80         if (!lh) {
  81                 perror("lttng_health_create_sessiond");
  82                 return -1;
  83         }
  84
  85         status = check_component(lh, "sessiond", 0);
  86
  87         lttng_health_destroy(lh);
  88
  89         return status;
  90 }
  91
  92 static
  93 int check_consumerd(enum lttng_health_consumerd hc)
  94 {
  95         struct lttng_health *lh;
  96         int status;
  97         static const char *cnames[NR_LTTNG_HEALTH_CONSUMERD] = {
  98                 "ust-consumerd-32",
  99                 "ust-consumerd-64",
 100                 "kernel-consumerd",
 101         };
 102
 103         lh = lttng_health_create_consumerd(hc);
 104         if (!lh) {
 105                 perror("lttng_health_create_consumerd");
 106                 return -1;
 107         }
 108
 109         status = check_component(lh, cnames[hc], 1);
 110
 111         lttng_health_destroy(lh);
 112
 113         return status;
 114 }
 115
 116 static
 117 int check_relayd(const char *path)
 118 {
 119         struct lttng_health *lh;
 120         int status;
 121
 122         lh = lttng_health_create_relayd(path);
 123         if (!lh) {
 124                 perror("lttng_health_create_relayd");
 125                 return -1;
 126         }
 127
 128         status = check_component(lh, "relayd", 0);
 129
 130         lttng_health_destroy(lh);
 131
 132         return status;
 133 }
 134
 135 int main(int argc, char *argv[])
 136 {
 137         int status = 0, i;
 138
 139         for (i = 1; i < argc; i++) {
 140                 size_t relayd_path_arg_len = strlen("--relayd-path=");
 141                 if (!strncmp(argv[i], "--relayd-path=",
 142                                 relayd_path_arg_len)) {
 143                         relayd_path = &argv[i][relayd_path_arg_len];
 144                 } else {
 145                         fprintf(stderr, "Unknown option \"%s\". Try --relayd-path=PATH.\n", argv[i]);
 146                         exit(EXIT_FAILURE);
 147                 }
 148         }
 149
 150         status |= check_sessiond();
 151         for (i = 0; i < NR_LTTNG_HEALTH_CONSUMERD; i++) {
 152                 status |= check_consumerd(i);
 153         }
 154         if (relayd_path) {
 155                 status |= check_relayd(relayd_path);
 156         }
 157         if (!status) {
 158                 exit(EXIT_SUCCESS);
 159         } else {
 160                 exit(EXIT_FAILURE);
 161         }
 162 }