static void lld_trigger_free(zbx_lld_trigger_t *trigger)
{
zbx_vector_ptr_clean(&trigger->functions, (zbx_mem_free_func_t)lld_function_free);
zbx_vector_ptr_destroy(&trigger->functions);
zbx_free(trigger->comments_orig);
zbx_free(trigger->comments);
zbx_free(trigger->expression_orig);
zbx_free(trigger->expression);
zbx_free(trigger->description_orig);
zbx_free(trigger->description);
zbx_free(trigger);
}
/******************************************************************************
* *
* Function: lld_process_discovery_rule *
* *
* Purpose: add or update items, triggers and graphs for discovery item *
* *
* Parameters: lld_ruleid - [IN] discovery item identificator from database *
* value - [IN] received value from agent *
* *
******************************************************************************/
void lld_process_discovery_rule(zbx_uint64_t lld_ruleid, char *value, zbx_timespec_t *ts)
{
const char *__function_name = "lld_process_discovery_rule";
DB_RESULT result;
DB_ROW row;
zbx_uint64_t hostid = 0;
char *discovery_key = NULL, *filter = NULL, *error = NULL, *db_error = NULL, *error_esc;
unsigned char state = 0;
unsigned short lifetime;
zbx_vector_ptr_t lld_rows;
char *sql = NULL;
size_t sql_alloc = 128, sql_offset = 0;
const char *sql_start = "update items set ", *sql_continue = ",";
zabbix_log(LOG_LEVEL_DEBUG, "In %s() itemid:" ZBX_FS_UI64, __function_name, lld_ruleid);
zbx_vector_ptr_create(&lld_rows);
sql = zbx_malloc(sql, sql_alloc);
result = DBselect(
"select hostid,key_,state,filter,error,lifetime"
" from items"
" where itemid=" ZBX_FS_UI64,
lld_ruleid);
if (NULL != (row = DBfetch(result)))
{
char *lifetime_str;
ZBX_STR2UINT64(hostid, row[0]);
discovery_key = zbx_strdup(discovery_key, row[1]);
state = (unsigned char)atoi(row[2]);
filter = zbx_strdup(filter, row[3]);
db_error = zbx_strdup(db_error, row[4]);
lifetime_str = zbx_strdup(NULL, row[5]);
substitute_simple_macros(NULL, NULL, NULL, NULL, &hostid, NULL, NULL,
&lifetime_str, MACRO_TYPE_COMMON, NULL, 0);
if (SUCCEED != is_ushort(lifetime_str, &lifetime))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot process lost resources for the discovery rule \"%s:%s\":"
" \"%s\" is not a valid value",
zbx_host_string(hostid), discovery_key, lifetime_str);
lifetime = 3650; /* max value for the field */
}
zbx_free(lifetime_str);
}
else
zabbix_log(LOG_LEVEL_WARNING, "invalid discovery rule ID [" ZBX_FS_UI64 "]", lld_ruleid);
DBfree_result(result);
if (0 == hostid)
goto clean;
if (SUCCEED != lld_rows_get(value, filter, &lld_rows, &error))
goto error;
error = zbx_strdup(error, "");
lld_update_items(hostid, lld_ruleid, &lld_rows, &error, lifetime, ts->sec);
lld_update_triggers(hostid, lld_ruleid, &lld_rows, &error);
lld_update_graphs(hostid, lld_ruleid, &lld_rows, &error);
lld_update_hosts(lld_ruleid, &lld_rows, &error, lifetime, ts->sec);
if (ITEM_STATE_NOTSUPPORTED == state)
{
zabbix_log(LOG_LEVEL_WARNING, "discovery rule [" ZBX_FS_UI64 "][%s] became supported",
lld_ruleid, zbx_host_key_string(lld_ruleid));
add_event(0, EVENT_SOURCE_INTERNAL, EVENT_OBJECT_LLDRULE, lld_ruleid, ts, ITEM_STATE_NORMAL,
NULL, NULL, 0, 0);
process_events();
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%sstate=%d", sql_start, ITEM_STATE_NORMAL);
sql_start = sql_continue;
}
error:
if (NULL != error && 0 != strcmp(error, db_error))
{
error_esc = DBdyn_escape_string_len(error, ITEM_ERROR_LEN);
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, "%serror='%s'", sql_start, error_esc);
sql_start = sql_continue;
zbx_free(error_esc);
}
if (sql_start == sql_continue)
{
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset, " where itemid=" ZBX_FS_UI64, lld_ruleid);
DBbegin();
DBexecute("%s", sql);
DBcommit();
}
clean:
zbx_free(error);
zbx_free(db_error);
zbx_free(filter);
zbx_free(discovery_key);
zbx_free(sql);
zbx_vector_ptr_clean(&lld_rows, (zbx_mem_free_func_t)lld_row_free);
zbx_vector_ptr_destroy(&lld_rows);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
static void lld_row_free(zbx_lld_row_t *lld_row)
{
zbx_vector_ptr_clean(&lld_row->item_links, (zbx_mem_free_func_t)lld_item_link_free);
zbx_vector_ptr_destroy(&lld_row->item_links);
zbx_free(lld_row);
}
/******************************************************************************
* *
* Function: lld_triggers_validate *
* *
* Parameters: triggers - [IN] sorted list of triggers *
* *
******************************************************************************/
static void lld_triggers_validate(zbx_uint64_t hostid, zbx_vector_ptr_t *triggers, char **error)
{
const char *__function_name = "lld_triggers_validate";
int i, j, k;
zbx_lld_trigger_t *trigger;
zbx_lld_function_t *function;
zbx_vector_uint64_t triggerids;
zbx_vector_str_t descriptions;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
zbx_vector_uint64_create(&triggerids);
zbx_vector_str_create(&descriptions);
/* checking a validity of the fields */
for (i = 0; i < triggers->values_num; i++)
{
trigger = (zbx_lld_trigger_t *)triggers->values[i];
lld_validate_trigger_field(trigger, &trigger->description, &trigger->description_orig,
ZBX_FLAG_LLD_TRIGGER_UPDATE_DESCRIPTION, TRIGGER_DESCRIPTION_LEN, error);
lld_validate_trigger_field(trigger, &trigger->comments, &trigger->comments_orig,
ZBX_FLAG_LLD_TRIGGER_UPDATE_COMMENTS, TRIGGER_COMMENTS_LEN, error);
}
/* checking duplicated triggers in DB */
for (i = 0; i < triggers->values_num; i++)
{
trigger = (zbx_lld_trigger_t *)triggers->values[i];
if (0 == (trigger->flags & ZBX_FLAG_LLD_TRIGGER_DISCOVERED))
continue;
if (0 != trigger->triggerid)
{
zbx_vector_uint64_append(&triggerids, trigger->triggerid);
if (SUCCEED != lld_trigger_changed(trigger))
continue;
}
zbx_vector_str_append(&descriptions, trigger->description);
}
if (0 != descriptions.values_num)
{
char *sql = NULL;
size_t sql_alloc = 256, sql_offset = 0;
DB_RESULT result;
DB_ROW row;
zbx_vector_ptr_t db_triggers;
zbx_lld_trigger_t *db_trigger;
zbx_vector_ptr_create(&db_triggers);
zbx_vector_str_sort(&descriptions, ZBX_DEFAULT_STR_COMPARE_FUNC);
zbx_vector_str_uniq(&descriptions, ZBX_DEFAULT_STR_COMPARE_FUNC);
sql = zbx_malloc(sql, sql_alloc);
zbx_snprintf_alloc(&sql, &sql_alloc, &sql_offset,
"select distinct t.triggerid,t.description,t.expression"
" from triggers t,functions f,items i"
" where t.triggerid=f.triggerid"
" and f.itemid=i.itemid"
" and i.hostid=" ZBX_FS_UI64
" and",
hostid);
DBadd_str_condition_alloc(&sql, &sql_alloc, &sql_offset, "t.description",
(const char **)descriptions.values, descriptions.values_num);
if (0 != triggerids.values_num)
{
zbx_vector_uint64_sort(&triggerids, ZBX_DEFAULT_UINT64_COMPARE_FUNC);
zbx_strcpy_alloc(&sql, &sql_alloc, &sql_offset, " and not");
DBadd_condition_alloc(&sql, &sql_alloc, &sql_offset, "t.triggerid",
triggerids.values, triggerids.values_num);
}
result = DBselect("%s", sql);
while (NULL != (row = DBfetch(result)))
{
db_trigger = zbx_malloc(NULL, sizeof(zbx_lld_trigger_t));
ZBX_STR2UINT64(db_trigger->triggerid, row[0]);
db_trigger->description = zbx_strdup(NULL, row[1]);
db_trigger->description_orig = NULL;
db_trigger->expression = zbx_strdup(NULL, row[2]);
db_trigger->expression_orig = NULL;
db_trigger->comments = NULL;
db_trigger->comments_orig = NULL;
db_trigger->flags = ZBX_FLAG_LLD_TRIGGER_UNSET;
zbx_vector_ptr_create(&db_trigger->functions);
zbx_vector_ptr_append(&db_triggers, db_trigger);
}
DBfree_result(result);
zbx_vector_ptr_sort(&db_triggers, ZBX_DEFAULT_UINT64_PTR_COMPARE_FUNC);
lld_functions_get(0, NULL, &db_triggers);
for (i = 0; i < db_triggers.values_num; i++)
{
db_trigger = (zbx_lld_trigger_t *)db_triggers.values[i];
lld_expression_simplify(&db_trigger->expression, &db_trigger->functions);
for (j = 0; j < triggers->values_num; j++)
{
trigger = (zbx_lld_trigger_t *)triggers->values[j];
if (0 == (trigger->flags & ZBX_FLAG_LLD_TRIGGER_DISCOVERED))
continue;
if (SUCCEED != lld_triggers_equal(trigger, db_trigger))
continue;
*error = zbx_strdcatf(*error, "Cannot %s trigger: trigger \"%s\" already exists.\n",
(0 != trigger->triggerid ? "update" : "create"), trigger->description);
if (0 != trigger->triggerid)
{
lld_field_str_rollback(&trigger->description, &trigger->description_orig,
&trigger->flags, ZBX_FLAG_LLD_TRIGGER_UPDATE_DESCRIPTION);
lld_field_str_rollback(&trigger->expression, &trigger->expression_orig,
&trigger->flags, ZBX_FLAG_LLD_TRIGGER_UPDATE_EXPRESSION);
for (k = 0; k < trigger->functions.values_num; k++)
{
function = (zbx_lld_function_t *)trigger->functions.values[k];
if (0 != function->functionid)
{
lld_field_uint64_rollback(&function->itemid,
&function->itemid_orig,
&function->flags,
ZBX_FLAG_LLD_FUNCTION_UPDATE_ITEMID);
lld_field_str_rollback(&function->function,
&function->function_orig,
&function->flags,
ZBX_FLAG_LLD_FUNCTION_UPDATE_FUNCTION);
lld_field_str_rollback(&function->parameter,
&function->parameter_orig,
&function->flags,
ZBX_FLAG_LLD_FUNCTION_UPDATE_PARAMETER);
function->flags &= ~ZBX_FLAG_LLD_FUNCTION_DELETE;
}
else
function->flags &= ~ZBX_FLAG_LLD_FUNCTION_DISCOVERED;
}
}
else
trigger->flags &= ~ZBX_FLAG_LLD_TRIGGER_DISCOVERED;
break; /* only one same trigger can be here */
}
}
zbx_vector_ptr_clean(&db_triggers, (zbx_mem_free_func_t)lld_trigger_free);
zbx_vector_ptr_destroy(&db_triggers);
zbx_free(sql);
}
zbx_vector_str_destroy(&descriptions);
zbx_vector_uint64_destroy(&triggerids);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
/******************************************************************************
* *
* Function: lld_update_triggers *
* *
* Purpose: add or update triggers for discovered items *
* *
******************************************************************************/
void lld_update_triggers(zbx_uint64_t hostid, zbx_uint64_t lld_ruleid, zbx_vector_ptr_t *lld_rows, char **error)
{
const char *__function_name = "lld_update_triggers";
DB_RESULT result;
DB_ROW row;
zbx_vector_ptr_t triggers;
zbx_vector_ptr_t functions_proto;
zbx_vector_ptr_t items;
zbx_lld_trigger_t *trigger;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __function_name);
zbx_vector_ptr_create(&triggers); /* list of triggers which were created or will be created or */
/* updated by the trigger prototype */
zbx_vector_ptr_create(&functions_proto); /* list of functions which are used by the trigger prototype */
zbx_vector_ptr_create(&items); /* list of items which are related to the trigger prototype */
result = DBselect(
"select distinct t.triggerid,t.description,t.expression,t.status,t.type,t.priority,t.comments,"
"t.url"
" from triggers t,functions f,items i,item_discovery id"
" where t.triggerid=f.triggerid"
" and f.itemid=i.itemid"
" and i.itemid=id.itemid"
" and id.parent_itemid=" ZBX_FS_UI64,
lld_ruleid);
/* run through trigger prototypes */
while (NULL != (row = DBfetch(result)))
{
zbx_uint64_t parent_triggerid;
const char *description_proto, *comments_proto, *url;
char *expression_proto;
unsigned char status, type, priority;
int i;
ZBX_STR2UINT64(parent_triggerid, row[0]);
description_proto = row[1];
expression_proto = zbx_strdup(NULL, row[2]);
ZBX_STR2UCHAR(status, row[3]);
ZBX_STR2UCHAR(type, row[4]);
ZBX_STR2UCHAR(priority, row[5]);
comments_proto = row[6];
url = row[7];
lld_triggers_get(parent_triggerid, &triggers, type, priority, url);
lld_functions_get(parent_triggerid, &functions_proto, &triggers);
lld_items_get(parent_triggerid, &items);
/* simplifying trigger expressions */
lld_expression_simplify(&expression_proto, &functions_proto);
for (i = 0; i < triggers.values_num; i++)
{
trigger = (zbx_lld_trigger_t *)triggers.values[i];
lld_expression_simplify(&trigger->expression, &trigger->functions);
}
/* making triggers */
lld_triggers_make(&functions_proto, &triggers, &items, description_proto, expression_proto,
comments_proto, lld_rows, error);
lld_triggers_validate(hostid, &triggers, error);
lld_triggers_save(parent_triggerid, &triggers, status, type, priority, url);
/* cleaning */
zbx_vector_ptr_clean(&items, (zbx_mem_free_func_t)lld_item_free);
zbx_vector_ptr_clean(&functions_proto, (zbx_mem_free_func_t)lld_function_free);
zbx_vector_ptr_clean(&triggers, (zbx_mem_free_func_t)lld_trigger_free);
zbx_free(expression_proto);
}
DBfree_result(result);
zbx_vector_ptr_destroy(&items);
zbx_vector_ptr_destroy(&functions_proto);
zbx_vector_ptr_destroy(&triggers);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
