| 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.hpp" |
| 9 | |
| 10 | #include <lttng/action/action-internal.hpp> |
| 11 | #include <lttng/error-query-internal.hpp> |
| 12 | #include <lttng/trigger/trigger-internal.hpp> |
| 13 | |
| 14 | enum lttng_trigger_status lttng_trigger_add_error_results(const struct lttng_trigger *trigger |
| 15 | __attribute__((unused)), |
| 16 | struct lttng_error_query_results *results |
| 17 | __attribute__((unused))) |
| 18 | { |
| 19 | return LTTNG_TRIGGER_STATUS_OK; |
| 20 | } |
| 21 | |
| 22 | enum lttng_trigger_status |
| 23 | lttng_trigger_condition_add_error_results(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 = nullptr; |
| 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 ? trigger_name : "(anonymous)"; |
| 35 | status = lttng_trigger_get_owner_uid(trigger, &trigger_owner); |
| 36 | LTTNG_ASSERT(status == LTTNG_TRIGGER_STATUS_OK); |
| 37 | |
| 38 | /* |
| 39 | * Only add discarded tracer messages count for applicable conditions. |
| 40 | * As of 2.13, only "event rule matches" conditions can generate |
| 41 | * reportable errors hence why this function is very specific to this |
| 42 | * condition type. |
| 43 | */ |
| 44 | if (!lttng_trigger_needs_tracer_notifier(trigger)) { |
| 45 | status = LTTNG_TRIGGER_STATUS_OK; |
| 46 | goto end; |
| 47 | } |
| 48 | |
| 49 | error_accounting_status = event_notifier_error_accounting_get_count( |
| 50 | trigger, &discarded_tracer_messages_count); |
| 51 | if (error_accounting_status != EVENT_NOTIFIER_ERROR_ACCOUNTING_STATUS_OK) { |
| 52 | ERR("Failed to retrieve tracer discarded messages count for trigger: trigger name = '%s', trigger owner uid = %d", |
| 53 | trigger_name, |
| 54 | (int) trigger_owner); |
| 55 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 56 | goto end; |
| 57 | } |
| 58 | |
| 59 | discarded_tracer_messages_counter = lttng_error_query_result_counter_create( |
| 60 | "discarded tracer messages", |
| 61 | "Count of messages discarded by the tracer due to a communication error with the session daemon", |
| 62 | discarded_tracer_messages_count); |
| 63 | if (!discarded_tracer_messages_counter) { |
| 64 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 65 | goto end; |
| 66 | } |
| 67 | |
| 68 | if (lttng_error_query_results_add_result(results, discarded_tracer_messages_counter)) { |
| 69 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 70 | goto end; |
| 71 | } |
| 72 | |
| 73 | /* Ownership transferred to the results. */ |
| 74 | discarded_tracer_messages_counter = nullptr; |
| 75 | |
| 76 | status = LTTNG_TRIGGER_STATUS_OK; |
| 77 | end: |
| 78 | lttng_error_query_result_destroy(discarded_tracer_messages_counter); |
| 79 | return status; |
| 80 | } |
| 81 | |
| 82 | enum lttng_trigger_status |
| 83 | lttng_trigger_add_action_error_query_results(struct lttng_trigger *trigger, |
| 84 | struct lttng_error_query_results *results) |
| 85 | { |
| 86 | enum lttng_trigger_status status; |
| 87 | const char *trigger_name; |
| 88 | uid_t trigger_owner; |
| 89 | enum lttng_action_status action_status; |
| 90 | |
| 91 | status = lttng_trigger_get_name(trigger, &trigger_name); |
| 92 | trigger_name = status == LTTNG_TRIGGER_STATUS_OK ? trigger_name : "(anonymous)"; |
| 93 | status = lttng_trigger_get_owner_uid(trigger, &trigger_owner); |
| 94 | LTTNG_ASSERT(status == LTTNG_TRIGGER_STATUS_OK); |
| 95 | |
| 96 | action_status = |
| 97 | lttng_action_add_error_query_results(lttng_trigger_get_action(trigger), results); |
| 98 | switch (action_status) { |
| 99 | case LTTNG_ACTION_STATUS_OK: |
| 100 | break; |
| 101 | default: |
| 102 | status = LTTNG_TRIGGER_STATUS_ERROR; |
| 103 | goto end; |
| 104 | } |
| 105 | |
| 106 | status = LTTNG_TRIGGER_STATUS_OK; |
| 107 | end: |
| 108 | return status; |
| 109 | } |