on-event: add error counter fields to condition
[lttng-tools.git] / include / lttng / condition / on-event-internal.h
1 /*
2 * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
3 *
4 * SPDX-License-Identifier: LGPL-2.1-only
5 *
6 */
7
8 #ifndef LTTNG_CONDITION_ON_EVENT_INTERNAL_H
9 #define LTTNG_CONDITION_ON_EVENT_INTERNAL_H
10
11 #include <lttng/condition/condition-internal.h>
12 #include <common/buffer-view.h>
13 #include <common/macros.h>
14 #include <common/optional.h>
15 #include <lttng/condition/evaluation-internal.h>
16 #include <common/dynamic-array.h>
17 #include <lttng/event-field-value.h>
18
19 struct lttng_capture_descriptor {
20 struct lttng_event_expr *event_expression;
21 struct lttng_bytecode *bytecode;
22 };
23
24 struct lttng_condition_on_event {
25 struct lttng_condition parent;
26 struct lttng_event_rule *rule;
27
28 LTTNG_OPTIONAL(uint64_t) error_count;
29 /*
30 * Internal use only.
31 * Error accounting counter index.
32 */
33 LTTNG_OPTIONAL(uint64_t) error_counter_index;
34
35 /* Array of `struct lttng_capture_descriptor *`. */
36 struct lttng_dynamic_pointer_array capture_descriptors;
37 };
38
39 struct lttng_evaluation_on_event {
40 struct lttng_evaluation parent;
41 char *name;
42
43 /* MessagePack-encoded captured event field values. */
44 struct lttng_dynamic_buffer capture_payload;
45
46 /*
47 * The content of this array event field value is the decoded
48 * version of `capture_payload` above.
49 *
50 * This is a cache: it's not serialized/deserialized in
51 * communications from/to the library and the session daemon.
52 */
53 struct lttng_event_field_value *captured_values;
54 };
55
56 struct lttng_evaluation_on_event_comm {
57 /* Includes the null terminator. */
58 uint32_t trigger_name_length;
59 /* Trigger name. */
60 char payload[];
61 } LTTNG_PACKED;
62
63 LTTNG_HIDDEN
64 ssize_t lttng_condition_on_event_create_from_payload(
65 struct lttng_payload_view *view,
66 struct lttng_condition **condition);
67
68 LTTNG_HIDDEN
69 enum lttng_condition_status
70 lttng_condition_on_event_borrow_rule_mutable(
71 const struct lttng_condition *condition,
72 struct lttng_event_rule **rule);
73
74 LTTNG_HIDDEN
75 void lttng_condition_on_event_set_error_counter_index(
76 struct lttng_condition *condition, uint64_t error_counter_index);
77
78 LTTNG_HIDDEN
79 uint64_t lttng_condition_on_event_get_error_counter_index(
80 const struct lttng_condition *condition);
81
82 LTTNG_HIDDEN
83 uint64_t lttng_condition_on_event_get_error_count(
84 const struct lttng_condition *condition);
85
86 LTTNG_HIDDEN
87 void lttng_condition_on_event_set_error_count(struct lttng_condition *condition,
88 uint64_t error_count);
89
90 LTTNG_HIDDEN
91 struct lttng_evaluation *lttng_evaluation_on_event_create(
92 const struct lttng_condition_on_event *condition,
93 const char* trigger_name,
94 const char *capture_payload, size_t capture_payload_size,
95 bool decode_capture_payload);
96
97 LTTNG_HIDDEN
98 ssize_t lttng_evaluation_on_event_create_from_payload(
99 const struct lttng_condition_on_event *condition,
100 struct lttng_payload_view *view,
101 struct lttng_evaluation **_evaluation);
102
103 LTTNG_HIDDEN
104 enum lttng_error_code
105 lttng_condition_on_event_generate_capture_descriptor_bytecode(
106 struct lttng_condition *condition);
107
108 LTTNG_HIDDEN
109 const struct lttng_bytecode *
110 lttng_condition_on_event_get_capture_bytecode_at_index(
111 const struct lttng_condition *condition, unsigned int index);
112
113 #endif /* LTTNG_CONDITION_ON_EVENT_INTERNAL_H */
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