1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
|
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "common.h"
#include "db.h"
#include "log.h"
#include "dbcache.h"
#include "zbxserver.h"
#include "template.h"
#include "events.h"
#define ZBX_FLAGS_TRIGGER_CREATE_NOTHING 0x00
#define ZBX_FLAGS_TRIGGER_CREATE_TRIGGER_EVENT 0x01
#define ZBX_FLAGS_TRIGGER_CREATE_INTERNAL_EVENT 0x02
#define ZBX_FLAGS_TRIGGER_CREATE_EVENT \
(ZBX_FLAGS_TRIGGER_CREATE_TRIGGER_EVENT | ZBX_FLAGS_TRIGGER_CREATE_INTERNAL_EVENT)
/******************************************************************************
* *
* Function: zbx_process_trigger *
* *
* Purpose: 1) calculate changeset of trigger fields to be updated *
* 2) generate events *
* *
* Parameters: trigger - [IN] the trigger to process *
* diffs - [OUT] the vector with trigger changes *
* *
* Return value: SUCCEED - trigger processed successfully *
* FAIL - no changes *
* *
* Comments: Trigger dependency checks will be done during event processing. *
* *
* Event generation depending on trigger value/state changes: *
* *
* From \ To | OK | OK(?) | PROBLEM | PROBLEM(?) | NONE *
*----------------------------------------------------------------------------*
* OK | . | I | E | I | . *
* | | | | | *
* OK(?) | I | . | E,I | - | I *
* | | | | | *
* PROBLEM | E | I | E(m) | I | . *
* | | | | | *
* PROBLEM(?) | E,I | - | E(m),I | . | I *
* *
* Legend: *
* 'E' - trigger event *
* 'I' - internal event *
* '.' - nothing *
* '-' - should never happen *
* *
******************************************************************************/
static int zbx_process_trigger(struct _DC_TRIGGER *trigger, zbx_vector_ptr_t *diffs)
{
const char *__function_name = "zbx_process_trigger";
const char *new_error;
int new_state, new_value, ret = FAIL;
zbx_uint64_t flags = ZBX_FLAGS_TRIGGER_DIFF_UNSET, event_flags = ZBX_FLAGS_TRIGGER_CREATE_NOTHING;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() triggerid:" ZBX_FS_UI64 " value:%d(%d) new_value:%d",
__function_name, trigger->triggerid, trigger->value, trigger->state, trigger->new_value);
if (TRIGGER_VALUE_UNKNOWN == trigger->new_value)
{
new_state = TRIGGER_STATE_UNKNOWN;
new_value = trigger->value;
}
else
{
new_state = TRIGGER_STATE_NORMAL;
new_value = trigger->new_value;
}
new_error = (NULL == trigger->new_error ? "" : trigger->new_error);
if (trigger->state != new_state)
{
flags |= ZBX_FLAGS_TRIGGER_DIFF_UPDATE_STATE;
event_flags |= ZBX_FLAGS_TRIGGER_CREATE_INTERNAL_EVENT;
}
if (0 != strcmp(trigger->error, new_error))
flags |= ZBX_FLAGS_TRIGGER_DIFF_UPDATE_ERROR;
if (TRIGGER_STATE_NORMAL == new_state)
{
if (TRIGGER_VALUE_PROBLEM == new_value)
{
if (TRIGGER_VALUE_OK == trigger->value || TRIGGER_TYPE_MULTIPLE_TRUE == trigger->type)
event_flags |= ZBX_FLAGS_TRIGGER_CREATE_TRIGGER_EVENT;
}
else if (TRIGGER_VALUE_OK == new_value)
{
if (TRIGGER_VALUE_PROBLEM == trigger->value || 0 == trigger->lastchange)
event_flags |= ZBX_FLAGS_TRIGGER_CREATE_TRIGGER_EVENT;
}
}
/* check if there is something to be updated */
if (0 == (flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE) && 0 == (event_flags & ZBX_FLAGS_TRIGGER_CREATE_EVENT))
goto out;
if (0 != (event_flags & ZBX_FLAGS_TRIGGER_CREATE_TRIGGER_EVENT))
{
zbx_add_event(EVENT_SOURCE_TRIGGERS, EVENT_OBJECT_TRIGGER, trigger->triggerid,
&trigger->timespec, new_value, trigger->description,
trigger->expression_orig, trigger->recovery_expression_orig,
trigger->priority, trigger->type, &trigger->tags,
trigger->correlation_mode, trigger->correlation_tag, trigger->value, NULL);
}
if (0 != (event_flags & ZBX_FLAGS_TRIGGER_CREATE_INTERNAL_EVENT))
{
zbx_add_event(EVENT_SOURCE_INTERNAL, EVENT_OBJECT_TRIGGER, trigger->triggerid,
&trigger->timespec, new_state, NULL, NULL, NULL, 0, 0, NULL, 0, NULL, 0, new_error);
}
zbx_append_trigger_diff(diffs, trigger->triggerid, trigger->priority, flags, trigger->value, new_state,
trigger->timespec.sec, new_error);
ret = SUCCEED;
out:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s flags:" ZBX_FS_UI64, __function_name, zbx_result_string(ret),
flags);
return ret;
}
/******************************************************************************
* *
* Function: zbx_db_save_trigger_changes *
* *
* Purpose: save the trigger changes to database *
* *
* Parameters:trigger_diff - [IN] the trigger changeset *
* *
******************************************************************************/
void zbx_db_save_trigger_changes(const zbx_vector_ptr_t *trigger_diff)
{
const char *__function_name = "zbx_db_save_trigger_changes";
int i;
char *sql = NULL;
size_t sql_alloc = 0, sql_offset = 0;
const zbx_trigger_diff_t *diff;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
DBbegin_multiple_update(&sql, &sql_alloc, &sql_offset);
for (i = 0; i < trigger_diff->values_num; i++)
{
char delim = ' ';
diff = (const zbx_trigger_diff_t *)trigger_diff->values[i];
if (0 == (diff->flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE))
continue;
zbx_strcpy_alloc(&sql, &sql_alloc, &sql_offset, "update triggers set");
if (0 != (diff->flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE_LASTCHANGE))
{
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%clastchange=%d", delim, diff->lastchange);
delim = ',';
}
if (0 != (diff->flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE_VALUE))
{
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%cvalue=%d", delim, diff->value);
delim = ',';
}
if (0 != (diff->flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE_STATE))
{
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%cstate=%d", delim, diff->state);
delim = ',';
}
if (0 != (diff->flags & ZBX_FLAGS_TRIGGER_DIFF_UPDATE_ERROR))
{
char *error_esc;
error_esc = DBdyn_escape_field("triggers", "error", diff->error);
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%cerror='%s'", delim, error_esc);
zbx_free(error_esc);
}
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, " where triggerid=" ZBX_FS_UI64 ";\n",
diff->triggerid);
DBexecute_overflowed_sql(&sql, &sql_alloc, &sql_offset);
}
DBend_multiple_update(&sql, &sql_alloc, &sql_offset);
if (sql_offset > 16) /* in ORACLE always present begin..end; */
DBexecute("%s", sql);
zbx_free(sql);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: zbx_trigger_diff_free *
* *
* Purpose: frees trigger changeset *
* *
******************************************************************************/
void zbx_trigger_diff_free(zbx_trigger_diff_t *diff)
{
zbx_free(diff->error);
zbx_free(diff);
}
/******************************************************************************
* *
* Comments: helper function for zbx_process_triggers() *
* *
******************************************************************************/
static int zbx_trigger_topoindex_compare(const void *d1, const void *d2)
{
const DC_TRIGGER *t1 = *(const DC_TRIGGER **)d1;
const DC_TRIGGER *t2 = *(const DC_TRIGGER **)d2;
ZBX_RETURN_IF_NOT_EQUAL(t1->topoindex, t2->topoindex);
return 0;
}
/******************************************************************************
* *
* Function: zbx_process_triggers *
* *
* Purpose: process triggers - calculates property changeset and generates *
* events *
* *
* Parameters: triggers - [IN] the triggers to process *
* trigger_diff - [OUT] the trigger changeset *
* *
* Comments: The trigger_diff changeset must be cleaned by the caller: *
* zbx_vector_ptr_clear_ext(trigger_diff, *
* (zbx_clean_func_t)zbx_trigger_diff_free); *
* *
******************************************************************************/
void zbx_process_triggers(zbx_vector_ptr_t *triggers, zbx_vector_ptr_t *trigger_diff)
{
const char *__function_name = "zbx_process_triggers";
int i;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() values_num:%d", __function_name, triggers->values_num);
if (0 == triggers->values_num)
goto out;
zbx_vector_ptr_sort(triggers, zbx_trigger_topoindex_compare);
for (i = 0; i < triggers->values_num; i++)
zbx_process_trigger((struct _DC_TRIGGER *)triggers->values[i], trigger_diff);
zbx_vector_ptr_sort(trigger_diff, ZBX_DEFAULT_UINT64_PTR_COMPARE_FUNC);
out:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: zbx_append_trigger_diff *
* *
* Purpose: Adds a new trigger diff to trigger changeset vector *
* *
******************************************************************************/
void zbx_append_trigger_diff(zbx_vector_ptr_t *trigger_diff, zbx_uint64_t triggerid, unsigned char priority,
zbx_uint64_t flags, unsigned char value, unsigned char state, int lastchange, const char *error)
{
zbx_trigger_diff_t *diff;
diff = (zbx_trigger_diff_t *)zbx_malloc(NULL, sizeof(zbx_trigger_diff_t));
diff->triggerid = triggerid;
diff->priority = priority;
diff->flags = flags;
diff->value = value;
diff->state = state;
diff->lastchange = lastchange;
diff->error = (NULL != error ? zbx_strdup(NULL, error) : NULL);
diff->problem_count = 0;
zbx_vector_ptr_append(trigger_diff, diff);
}
|