src/bin/lttng-sessiond/trigger-error-query.c

   1 /*
   2  * Copyright (C) 2021 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7
   8 #include "event-notifier-error-accounting.h"
   9 #include <lttng/error-query-internal.h>
  10 #include <lttng/trigger/trigger-internal.h>
  11 #include <lttng/action/action-internal.h>
  12
  13 LTTNG_HIDDEN
  14 enum lttng_trigger_status lttng_trigger_add_error_results(
  15                 const struct lttng_trigger *trigger,
  16                 struct lttng_error_query_results *results)
  17 {
  18         enum lttng_trigger_status status;
  19         uint64_t discarded_tracer_messages_count;
  20         enum event_notifier_error_accounting_status error_accounting_status;
  21         struct lttng_error_query_result *discarded_tracer_messages_counter = NULL;
  22         const char *trigger_name;
  23         uid_t trigger_owner;
  24
  25         status = lttng_trigger_get_name(trigger, &trigger_name);
  26         trigger_name = status == LTTNG_TRIGGER_STATUS_OK ?
  27                         trigger_name : "(unnamed)";
  28         status = lttng_trigger_get_owner_uid(trigger,
  29                         &trigger_owner);
  30         assert(status == LTTNG_TRIGGER_STATUS_OK);
  31
  32         error_accounting_status = event_notifier_error_accounting_get_count(
  33                         trigger, &discarded_tracer_messages_count);
  34         if (error_accounting_status != EVENT_NOTIFIER_ERROR_ACCOUNTING_STATUS_OK) {
  35                 ERR("Failed to retrieve tracer discarded messages count for triger: triggger name = '%s', trigger owner uid = %d",
  36                                 trigger_name, (int) trigger_owner);
  37                 status = LTTNG_TRIGGER_STATUS_ERROR;
  38                 goto end;
  39         }
  40
  41         discarded_tracer_messages_counter = lttng_error_query_result_counter_create(
  42                         "discarded tracer messages",
  43                         "Count of messages discarded by the tracer due to a communication error with the session daemon",
  44                         discarded_tracer_messages_count);
  45         if (!discarded_tracer_messages_counter) {
  46                 status = LTTNG_TRIGGER_STATUS_ERROR;
  47                 goto end;
  48         }
  49
  50         if (lttng_error_query_results_add_result(
  51                             results, discarded_tracer_messages_counter)) {
  52                 status = LTTNG_TRIGGER_STATUS_ERROR;
  53                 goto end;
  54         }
  55
  56         /* Ownership transferred to the results. */
  57         discarded_tracer_messages_counter = NULL;
  58
  59         status = LTTNG_TRIGGER_STATUS_OK;
  60 end:
  61         lttng_error_query_result_destroy(discarded_tracer_messages_counter);
  62         return status;
  63 }
  64
  65 LTTNG_HIDDEN
  66 enum lttng_trigger_status lttng_trigger_add_action_error_query_results(
  67                 struct lttng_trigger *trigger,
  68                 struct lttng_error_query_results *results)
  69 {
  70         enum lttng_trigger_status status;
  71         const char *trigger_name;
  72         uid_t trigger_owner;
  73         enum lttng_action_status action_status;
  74
  75         status = lttng_trigger_get_name(trigger, &trigger_name);
  76         trigger_name = status == LTTNG_TRIGGER_STATUS_OK ?
  77                         trigger_name : "(unnamed)";
  78         status = lttng_trigger_get_owner_uid(trigger,
  79                         &trigger_owner);
  80         assert(status == LTTNG_TRIGGER_STATUS_OK);
  81
  82         action_status = lttng_action_add_error_query_results(
  83                         lttng_trigger_get_action(trigger), results);
  84         switch (action_status) {
  85         case LTTNG_ACTION_STATUS_OK:
  86                 status = LTTNG_TRIGGER_STATUS_OK;
  87                 goto end;
  88         default:
  89                 status = LTTNG_TRIGGER_STATUS_ERROR;
  90                 goto end;
  91         }
  92
  93         status = LTTNG_TRIGGER_STATUS_OK;
  94 end:
  95         return status;
  96 }