| 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 | } |