Collect return codes from monitoring handlers and indicate errors

[trust_router.git] / tr / tr_main.c

diff --git a/tr/tr_main.c b/tr/tr_main.c
index a03ef4b..bb04beb 100644 (file)
--- a/tr/tr_main.c
+++ b/tr/tr_main.c
@@ -34,15 +34,15 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <jansson.h>
 #include <argp.h>
 #include <event2/event.h>
 #include <talloc.h>
-#include <sys/time.h>
 #include <signal.h>
-#include <pthread.h>
+#include <time.h>
 
 #include <tid_internal.h>
+#include <mon_internal.h>
+#include <tr_mon.h>
 #include <tr_tid.h>
 #include <tr_trp.h>
 #include <tr_config.h>
@@ -145,6 +145,20 @@ static void configure_signals(void)
   pthread_sigmask(SIG_BLOCK, &signals, NULL);
 }
 
+/* TODO move this function */
+static MON_RC tr_mon_handle_version(void *cookie, json_t **result_ptr)
+{
+  *result_ptr = json_string(PACKAGE_VERSION);
+  return (*result_ptr == NULL) ? MON_NOMEM : MON_SUCCESS;
+}
+
+static MON_RC tr_mon_handle_uptime(void *cookie, json_t **result_ptr)
+{
+  time_t *start_time = cookie;
+  *result_ptr = json_integer(time(NULL) - (*start_time));
+  return (*result_ptr == NULL) ? MON_NOMEM : MON_SUCCESS;
+}
+
 int main(int argc, char *argv[])
 {
   TALLOC_CTX *main_ctx=NULL;
@@ -153,8 +167,11 @@ int main(int argc, char *argv[])
   struct cmdline_args opts;
   struct event_base *ev_base;
   struct tr_socket_event tids_ev = {0};
+  struct tr_socket_event mon_ev = {0};
   struct event *cfgwatch_ev;
 
+  time_t start_time = time(NULL); /* TODO move this? */
+
   configure_signals();
 
   /* we're going to be multithreaded, so disable null context tracking */
@@ -192,11 +209,10 @@ int main(int argc, char *argv[])
   }
 
   /***** initialize the trust path query server instance *****/
-  if (NULL == (tr->tids = tids_create())) {
+  if (NULL == (tr->tids = tids_new(tr))) {
     tr_crit("Error initializing Trust Path Query Server instance.");
     return 1;
   }
-  talloc_steal(tr, tr->tids);
 
   /***** initialize the trust router protocol server instance *****/
   if (NULL == (tr->trps = trps_new(tr))) {
@@ -204,6 +220,19 @@ int main(int argc, char *argv[])
     return 1;
   }
 
+  /***** initialize the monitoring interface instance *****/
+  if (NULL == (tr->mons = mons_new(tr))) {
+    tr_crit("Error initializing monitoring interface instance.");
+    return 1;
+  }
+  /* Monitor our tids/trps instances */
+  tr->mons->tids = tr->tids;
+  tr->mons->trps = tr->trps;
+
+  /* TODO do this more systematically */
+  mons_register_handler(tr->mons, MON_CMD_SHOW, OPT_TYPE_SHOW_VERSION, tr_mon_handle_version, NULL);
+  mons_register_handler(tr->mons, MON_CMD_SHOW, OPT_TYPE_SHOW_UPTIME, tr_mon_handle_uptime, &start_time);
+
   /***** process configuration *****/
   tr->cfgwatch=tr_cfgwatch_create(tr);
   if (tr->cfgwatch == NULL) {
@@ -232,7 +261,12 @@ int main(int argc, char *argv[])
     return 1;
   }
 
-  /*tr_status_event_init();*/ /* install status reporting events */
+  /* install monitoring interface events */
+  tr_debug("Initializing monitoring interface events.");
+  if (0 != tr_mons_event_init(ev_base, tr->mons, tr->cfg_mgr, &mon_ev)) {
+    tr_crit("Error initializing monitoring interface.");
+    return 1;
+  }
 
   /* install TID server events */
   tr_debug("Initializing TID server events.");