| 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 | return LTTNG_TRIGGER_STATUS_OK; |
| 19 | } |
| 20 | |
| 21 | LTTNG_HIDDEN |
| 22 | enum lttng_trigger_status lttng_trigger_condition_add_error_results( |
| 23 | const struct lttng_trigger *trigger, |
| 24 | struct lttng_error_query_results *results) |
| 25 | { |
| 26 | enum lttng_trigger_status status; |
| 27 | uint64_t discarded_tracer_messages_count; |
| 28 | enum event_notifier_error_accounting_status error_accounting_status; |
| 29 | struct lttng_error_query_result *discarded_tracer_messages_counter = NULL; |
| 30 | const char *trigger_name; |
| 31 | uid_t trigger_owner; |
| 32 | |
| 33 | status = lttng_trigger_get_name(trigger, &trigger_name); |
| 34 | trigger_name = status == LTTNG_TRIGGER_STATUS_OK ? |
| 35 | trigger_name : "(anonymous)"; |
| 36 | status = lttng_trigger_get_owner_uid(trigger, |
| 37 | &trigger_owner); |
| 38 | assert(status == LTTNG_TRIGGER_STATUS_OK); |
| 39 | |
| 40 | /* |
| 41 | * Only add discarded tracer messages count for applicable conditions. |
| 42 | * As of 2.13, only "event rule matches" conditions can generate |
| 43 | * reportable errors hence why this function is very specific to this |
| 44 | * condition type. |
| 45 | */ |
| 46 | if (!lttng_trigger_needs_tracer_notifier(trigger)) { |
| 47 | status = LTTNG_TRIGGER_STATUS_OK; |
| 48 | goto end; |
| 49 | } |
| 50 | |
| 51 | error_accounting_status = event_notifier_error_accounting_get_count( |
| 52 | trigger, &discarded_tracer_messages_count); |
| 53 | if (error_accounting_status != EVENT_NOTIFIER_ERROR_ACCOUNTING_STATUS_OK) { |
| 54 | ERR("Failed to retrieve tracer discarded messages count for triger: triggger name = '%s', trigger owner uid = %d", |
| 55 | trigger_name, (int) trigger_owner); |
| 56 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 57 | goto end; |
| 58 | } |
| 59 | |
| 60 | discarded_tracer_messages_counter = lttng_error_query_result_counter_create( |
| 61 | "discarded tracer messages", |
| 62 | "Count of messages discarded by the tracer due to a communication error with the session daemon", |
| 63 | discarded_tracer_messages_count); |
| 64 | if (!discarded_tracer_messages_counter) { |
| 65 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 66 | goto end; |
| 67 | } |
| 68 | |
| 69 | if (lttng_error_query_results_add_result( |
| 70 | results, discarded_tracer_messages_counter)) { |
| 71 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 72 | goto end; |
| 73 | } |
| 74 | |
| 75 | /* Ownership transferred to the results. */ |
| 76 | discarded_tracer_messages_counter = NULL; |
| 77 | |
| 78 | status = LTTNG_TRIGGER_STATUS_OK; |
| 79 | end: |
| 80 | lttng_error_query_result_destroy(discarded_tracer_messages_counter); |
| 81 | return status; |
| 82 | } |
| 83 | |
| 84 | LTTNG_HIDDEN |
| 85 | enum lttng_trigger_status lttng_trigger_add_action_error_query_results( |
| 86 | struct lttng_trigger *trigger, |
| 87 | struct lttng_error_query_results *results) |
| 88 | { |
| 89 | enum lttng_trigger_status status; |
| 90 | const char *trigger_name; |
| 91 | uid_t trigger_owner; |
| 92 | enum lttng_action_status action_status; |
| 93 | |
| 94 | status = lttng_trigger_get_name(trigger, &trigger_name); |
| 95 | trigger_name = status == LTTNG_TRIGGER_STATUS_OK ? |
| 96 | trigger_name : "(anonymous)"; |
| 97 | status = lttng_trigger_get_owner_uid(trigger, |
| 98 | &trigger_owner); |
| 99 | assert(status == LTTNG_TRIGGER_STATUS_OK); |
| 100 | |
| 101 | action_status = lttng_action_add_error_query_results( |
| 102 | lttng_trigger_get_action(trigger), results); |
| 103 | switch (action_status) { |
| 104 | case LTTNG_ACTION_STATUS_OK: |
| 105 | break; |
| 106 | default: |
| 107 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 108 | goto end; |
| 109 | } |
| 110 | |
| 111 | status = LTTNG_TRIGGER_STATUS_OK; |
| 112 | end: |
| 113 | return status; |
| 114 | } |