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/*
* Copyright 2015-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/crm.h>
#include <crm/lrmd.h>
#include <crm/msg_xml.h>
#include <crm/common/alerts_internal.h>
#include <crm/common/xml_internal.h>
#include <crm/cib/internal.h> /* for F_CIB_UPDATE_RESULT */
/*
* to allow script compatibility we can have more than one
* set of environment variables
*/
const char *pcmk__alert_keys[PCMK__ALERT_INTERNAL_KEY_MAX][3] =
{
[PCMK__alert_key_recipient] = {
"CRM_notify_recipient", "CRM_alert_recipient", NULL
},
[PCMK__alert_key_node] = {
"CRM_notify_node", "CRM_alert_node", NULL
},
[PCMK__alert_key_nodeid] = {
"CRM_notify_nodeid", "CRM_alert_nodeid", NULL
},
[PCMK__alert_key_rsc] = {
"CRM_notify_rsc", "CRM_alert_rsc", NULL
},
[PCMK__alert_key_task] = {
"CRM_notify_task", "CRM_alert_task", NULL
},
[PCMK__alert_key_interval] = {
"CRM_notify_interval", "CRM_alert_interval", NULL
},
[PCMK__alert_key_desc] = {
"CRM_notify_desc", "CRM_alert_desc", NULL
},
[PCMK__alert_key_status] = {
"CRM_notify_status", "CRM_alert_status", NULL
},
[PCMK__alert_key_target_rc] = {
"CRM_notify_target_rc", "CRM_alert_target_rc", NULL
},
[PCMK__alert_key_rc] = {
"CRM_notify_rc", "CRM_alert_rc", NULL
},
[PCMK__alert_key_kind] = {
"CRM_notify_kind", "CRM_alert_kind", NULL
},
[PCMK__alert_key_version] = {
"CRM_notify_version", "CRM_alert_version", NULL
},
[PCMK__alert_key_node_sequence] = {
"CRM_notify_node_sequence", PCMK__ALERT_NODE_SEQUENCE, NULL
},
[PCMK__alert_key_timestamp] = {
"CRM_notify_timestamp", "CRM_alert_timestamp", NULL
},
[PCMK__alert_key_attribute_name] = {
"CRM_notify_attribute_name", "CRM_alert_attribute_name", NULL
},
[PCMK__alert_key_attribute_value] = {
"CRM_notify_attribute_value", "CRM_alert_attribute_value", NULL
},
[PCMK__alert_key_timestamp_epoch] = {
"CRM_notify_timestamp_epoch", "CRM_alert_timestamp_epoch", NULL
},
[PCMK__alert_key_timestamp_usec] = {
"CRM_notify_timestamp_usec", "CRM_alert_timestamp_usec", NULL
},
[PCMK__alert_key_exec_time] = {
"CRM_notify_exec_time", "CRM_alert_exec_time", NULL
}
};
/*!
* \brief Create a new alert entry structure
*
* \param[in] id ID to use
* \param[in] path Path to alert agent executable
*
* \return Pointer to newly allocated alert entry
* \note Non-string fields will be filled in with defaults.
* It is the caller's responsibility to free the result,
* using pcmk__free_alert().
*/
pcmk__alert_t *
pcmk__alert_new(const char *id, const char *path)
{
pcmk__alert_t *entry = calloc(1, sizeof(pcmk__alert_t));
CRM_ASSERT(entry && id && path);
entry->id = strdup(id);
entry->path = strdup(path);
entry->timeout = PCMK__ALERT_DEFAULT_TIMEOUT_MS;
entry->flags = pcmk__alert_default;
return entry;
}
void
pcmk__free_alert(pcmk__alert_t *entry)
{
if (entry) {
free(entry->id);
free(entry->path);
free(entry->tstamp_format);
free(entry->recipient);
g_strfreev(entry->select_attribute_name);
if (entry->envvars) {
g_hash_table_destroy(entry->envvars);
}
free(entry);
}
}
/*!
* \internal
* \brief Duplicate an alert entry
*
* \param[in] entry Alert entry to duplicate
*
* \return Duplicate of alert entry
*/
pcmk__alert_t *
pcmk__dup_alert(const pcmk__alert_t *entry)
{
pcmk__alert_t *new_entry = pcmk__alert_new(entry->id, entry->path);
new_entry->timeout = entry->timeout;
new_entry->flags = entry->flags;
new_entry->envvars = pcmk__str_table_dup(entry->envvars);
pcmk__str_update(&new_entry->tstamp_format, entry->tstamp_format);
pcmk__str_update(&new_entry->recipient, entry->recipient);
if (entry->select_attribute_name) {
new_entry->select_attribute_name = g_strdupv(entry->select_attribute_name);
}
return new_entry;
}
void
pcmk__add_alert_key(GHashTable *table, enum pcmk__alert_keys_e name,
const char *value)
{
for (const char **key = pcmk__alert_keys[name]; *key; key++) {
crm_trace("Inserting alert key %s = '%s'", *key, value);
if (value) {
g_hash_table_insert(table, strdup(*key), strdup(value));
} else {
g_hash_table_remove(table, *key);
}
}
}
void
pcmk__add_alert_key_int(GHashTable *table, enum pcmk__alert_keys_e name,
int value)
{
for (const char **key = pcmk__alert_keys[name]; *key; key++) {
crm_trace("Inserting alert key %s = %d", *key, value);
g_hash_table_insert(table, strdup(*key), pcmk__itoa(value));
}
}
#define XPATH_PATCHSET1_DIFF "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED
#define XPATH_PATCHSET1_CRMCONFIG XPATH_PATCHSET1_DIFF "//" XML_CIB_TAG_CRMCONFIG
#define XPATH_PATCHSET1_ALERTS XPATH_PATCHSET1_DIFF "//" XML_CIB_TAG_ALERTS
#define XPATH_PATCHSET1_EITHER \
XPATH_PATCHSET1_CRMCONFIG " | " XPATH_PATCHSET1_ALERTS
#define XPATH_CONFIG "/" XML_TAG_CIB "/" XML_CIB_TAG_CONFIGURATION
#define XPATH_CRMCONFIG XPATH_CONFIG "/" XML_CIB_TAG_CRMCONFIG "/"
#define XPATH_ALERTS XPATH_CONFIG "/" XML_CIB_TAG_ALERTS
/*!
* \internal
* \brief Check whether a CIB update affects alerts
*
* \param[in] msg XML containing CIB update
* \param[in] config Whether to check for crmconfig change as well
*
* \return TRUE if update affects alerts, FALSE otherwise
*/
bool
pcmk__alert_in_patchset(xmlNode *msg, bool config)
{
int rc = -1;
int format= 1;
xmlNode *patchset = get_message_xml(msg, F_CIB_UPDATE_RESULT);
xmlNode *change = NULL;
xmlXPathObject *xpathObj = NULL;
CRM_CHECK(msg != NULL, return FALSE);
crm_element_value_int(msg, F_CIB_RC, &rc);
if (rc < pcmk_ok) {
crm_trace("Ignore failed CIB update: %s (%d)", pcmk_strerror(rc), rc);
return FALSE;
}
crm_element_value_int(patchset, "format", &format);
if (format == 1) {
const char *diff = (config? XPATH_PATCHSET1_EITHER : XPATH_PATCHSET1_ALERTS);
if ((xpathObj = xpath_search(msg, diff)) != NULL) {
freeXpathObject(xpathObj);
return TRUE;
}
} else if (format == 2) {
for (change = pcmk__xml_first_child(patchset); change != NULL;
change = pcmk__xml_next(change)) {
const char *xpath = crm_element_value(change, XML_DIFF_PATH);
if (xpath == NULL) {
continue;
}
if ((!config || !strstr(xpath, XPATH_CRMCONFIG))
&& !strstr(xpath, XPATH_ALERTS)) {
/* this is not a change to an existing section ... */
xmlNode *section = NULL;
const char *name = NULL;
if ((strcmp(xpath, XPATH_CONFIG) != 0) ||
((section = pcmk__xml_first_child(change)) == NULL) ||
((name = crm_element_name(section)) == NULL) ||
(strcmp(name, XML_CIB_TAG_ALERTS) != 0)) {
/* ... nor is it a newly added alerts section */
continue;
}
}
return TRUE;
}
} else {
crm_warn("Unknown patch format: %d", format);
}
return FALSE;
}
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