tests/regression/tools/health/health_check.c

   1 /*
   2  * Copyright (C) 2012 - Christian Babeux <christian.babeux@efficios.com>
   3  * Copyright (C) 2014 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License, version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 51
  16  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include <lttng/health.h>
  24
  25 static const char *relayd_path;
  26
  27 static
  28 int check_component(struct lttng_health *lh, const char *component_name,
  29                 int ok_if_not_running)
  30 {
  31         const struct lttng_health_thread *thread;
  32         int nr_threads, i, status;
  33
  34         if (lttng_health_query(lh)) {
  35                 if (ok_if_not_running) {
  36                         return 0;
  37                 }
  38                 fprintf(stderr, "Error querying %s health\n",
  39                         component_name);
  40                 return -1;
  41         }
  42         status = lttng_health_state(lh);
  43         if (!status) {
  44                 return status;
  45         }
  46
  47         nr_threads = lttng_health_get_nr_threads(lh);
  48         if (nr_threads < 0) {
  49                 fprintf(stderr, "Error getting number of threads\n");
  50                 return -1;
  51         }
  52
  53         printf("Component \"%s\" is in error.\n", component_name);
  54         for (i = 0; i < nr_threads; i++) {
  55                 int thread_state;
  56
  57                 thread = lttng_health_get_thread(lh, i);
  58                 if (!thread) {
  59                         fprintf(stderr, "Error getting thread %d\n", i);
  60                         return -1;
  61                 }
  62                 thread_state = lttng_health_thread_state(thread);
  63                 if (!thread_state) {
  64                         continue;
  65                 }
  66                 printf("Thread \"%s\" is not responding in component \"%s\".\n",
  67                         lttng_health_thread_name(thread),
  68                         component_name);
  69
  70         }
  71         return status;
  72 }
  73
  74 static
  75 int check_sessiond(void)
  76 {
  77         struct lttng_health *lh;
  78         int status;
  79
  80         lh = lttng_health_create_sessiond();
  81         if (!lh) {
  82                 perror("lttng_health_create_sessiond");
  83                 return -1;
  84         }
  85
  86         status = check_component(lh, "sessiond", 0);
  87
  88         lttng_health_destroy(lh);
  89
  90         return status;
  91 }
  92
  93 static
  94 int check_consumerd(enum lttng_health_consumerd hc)
  95 {
  96         struct lttng_health *lh;
  97         int status;
  98         static const char *cnames[NR_LTTNG_HEALTH_CONSUMERD] = {
  99                 "ust-consumerd-32",
 100                 "ust-consumerd-64",
 101                 "kernel-consumerd",
 102         };
 103
 104         lh = lttng_health_create_consumerd(hc);
 105         if (!lh) {
 106                 perror("lttng_health_create_consumerd");
 107                 return -1;
 108         }
 109
 110         status = check_component(lh, cnames[hc], 1);
 111
 112         lttng_health_destroy(lh);
 113
 114         return status;
 115 }
 116
 117 static
 118 int check_relayd(const char *path)
 119 {
 120         struct lttng_health *lh;
 121         int status;
 122
 123         lh = lttng_health_create_relayd(path);
 124         if (!lh) {
 125                 perror("lttng_health_create_relayd");
 126                 return -1;
 127         }
 128
 129         status = check_component(lh, "relayd", 0);
 130
 131         lttng_health_destroy(lh);
 132
 133         return status;
 134 }
 135
 136 int main(int argc, char *argv[])
 137 {
 138         int status = 0, i;
 139
 140         for (i = 1; i < argc; i++) {
 141                 size_t relayd_path_arg_len = strlen("--relayd-path=");
 142                 if (!strncmp(argv[i], "--relayd-path=",
 143                                 relayd_path_arg_len)) {
 144                         relayd_path = &argv[i][relayd_path_arg_len];
 145                 } else {
 146                         fprintf(stderr, "Unknown option \"%s\". Try --relayd-path=PATH.\n", argv[i]);
 147                         exit(EXIT_FAILURE);
 148                 }
 149         }
 150
 151         status |= check_sessiond();
 152         for (i = 0; i < NR_LTTNG_HEALTH_CONSUMERD; i++) {
 153                 status |= check_consumerd(i);
 154         }
 155         if (relayd_path) {
 156                 status |= check_relayd(relayd_path);
 157         }
 158         if (!status) {
 159                 exit(EXIT_SUCCESS);
 160         } else {
 161                 exit(EXIT_FAILURE);
 162         }
 163 }