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controld_te_utils.c
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controld_te_utils.c
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/*
* Copyright 2004-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <pacemaker-controld.h>
//! Triggers transition graph processing
static crm_trigger_t *transition_trigger = NULL;
gboolean
stop_te_timer(pcmk__graph_action_t *action)
{
if (action == NULL) {
return FALSE;
}
if (action->timer != 0) {
crm_trace("Stopping action timer");
g_source_remove(action->timer);
action->timer = 0;
} else {
crm_trace("Action timer was already stopped");
return FALSE;
}
return TRUE;
}
static gboolean
te_graph_trigger(gpointer user_data)
{
if (controld_globals.transition_graph == NULL) {
crm_debug("Nothing to do");
return TRUE;
}
crm_trace("Invoking graph %d in state %s",
controld_globals.transition_graph->id,
fsa_state2string(controld_globals.fsa_state));
switch (controld_globals.fsa_state) {
case S_STARTING:
case S_PENDING:
case S_NOT_DC:
case S_HALT:
case S_ILLEGAL:
case S_STOPPING:
case S_TERMINATE:
return TRUE;
default:
break;
}
if (!controld_globals.transition_graph->complete) {
enum pcmk__graph_status graph_rc;
int orig_limit = controld_globals.transition_graph->batch_limit;
int throttled_limit = throttle_get_total_job_limit(orig_limit);
controld_globals.transition_graph->batch_limit = throttled_limit;
graph_rc = pcmk__execute_graph(controld_globals.transition_graph);
controld_globals.transition_graph->batch_limit = orig_limit;
if (graph_rc == pcmk__graph_active) {
crm_trace("Transition not yet complete");
return TRUE;
} else if (graph_rc == pcmk__graph_pending) {
crm_trace("Transition not yet complete - no actions fired");
return TRUE;
}
if (graph_rc != pcmk__graph_complete) {
crm_warn("Transition failed: %s",
pcmk__graph_status2text(graph_rc));
pcmk__log_graph(LOG_NOTICE, controld_globals.transition_graph);
}
}
crm_debug("Transition %d is now complete",
controld_globals.transition_graph->id);
controld_globals.transition_graph->complete = true;
notify_crmd(controld_globals.transition_graph);
return TRUE;
}
/*!
* \internal
* \brief Initialize transition trigger
*/
void
controld_init_transition_trigger(void)
{
transition_trigger = mainloop_add_trigger(G_PRIORITY_LOW, te_graph_trigger,
NULL);
}
/*!
* \internal
* \brief Destroy transition trigger
*/
void
controld_destroy_transition_trigger(void)
{
mainloop_destroy_trigger(transition_trigger);
transition_trigger = NULL;
}
void
controld_trigger_graph_as(const char *fn, int line)
{
crm_trace("%s:%d - Triggered graph processing", fn, line);
mainloop_set_trigger(transition_trigger);
}
static struct abort_timer_s {
bool aborted;
guint id;
int priority;
enum pcmk__graph_next action;
const char *text;
} abort_timer = { 0, };
static gboolean
abort_timer_popped(gpointer data)
{
if (AM_I_DC && (abort_timer.aborted == FALSE)) {
abort_transition(abort_timer.priority, abort_timer.action,
abort_timer.text, NULL);
}
abort_timer.id = 0;
return FALSE; // do not immediately reschedule timer
}
/*!
* \internal
* \brief Abort transition after delay, if not already aborted in that time
*
* \param[in] abort_text Must be literal string
*/
void
abort_after_delay(int abort_priority, enum pcmk__graph_next abort_action,
const char *abort_text, guint delay_ms)
{
if (abort_timer.id) {
// Timer already in progress, stop and reschedule
g_source_remove(abort_timer.id);
}
abort_timer.aborted = FALSE;
abort_timer.priority = abort_priority;
abort_timer.action = abort_action;
abort_timer.text = abort_text;
abort_timer.id = g_timeout_add(delay_ms, abort_timer_popped, NULL);
}
static const char *
abort2text(enum pcmk__graph_next abort_action)
{
switch (abort_action) {
case pcmk__graph_done: return "done";
case pcmk__graph_wait: return "stop";
case pcmk__graph_restart: return "restart";
case pcmk__graph_shutdown: return "shutdown";
}
return "unknown";
}
static bool
update_abort_priority(pcmk__graph_t *graph, int priority,
enum pcmk__graph_next action, const char *abort_reason)
{
bool change = FALSE;
if (graph == NULL) {
return change;
}
if (graph->abort_priority < priority) {
crm_debug("Abort priority upgraded from %d to %d", graph->abort_priority, priority);
graph->abort_priority = priority;
if (graph->abort_reason != NULL) {
crm_debug("'%s' abort superseded by %s", graph->abort_reason, abort_reason);
}
graph->abort_reason = abort_reason;
change = TRUE;
}
if (graph->completion_action < action) {
crm_debug("Abort action %s superseded by %s: %s",
abort2text(graph->completion_action), abort2text(action), abort_reason);
graph->completion_action = action;
change = TRUE;
}
return change;
}
void
abort_transition_graph(int abort_priority, enum pcmk__graph_next abort_action,
const char *abort_text, const xmlNode *reason,
const char *fn, int line)
{
int add[] = { 0, 0, 0 };
int del[] = { 0, 0, 0 };
int level = LOG_INFO;
const xmlNode *diff = NULL;
const xmlNode *change = NULL;
CRM_CHECK(controld_globals.transition_graph != NULL, return);
switch (controld_globals.fsa_state) {
case S_STARTING:
case S_PENDING:
case S_NOT_DC:
case S_HALT:
case S_ILLEGAL:
case S_STOPPING:
case S_TERMINATE:
crm_info("Abort %s suppressed: state=%s (%scomplete)",
abort_text, fsa_state2string(controld_globals.fsa_state),
(controld_globals.transition_graph->complete? "" : "in"));
return;
default:
break;
}
abort_timer.aborted = TRUE;
controld_expect_sched_reply(NULL);
if (!controld_globals.transition_graph->complete
&& update_abort_priority(controld_globals.transition_graph,
abort_priority, abort_action,
abort_text)) {
level = LOG_NOTICE;
}
if (reason != NULL) {
const xmlNode *search = NULL;
for(search = reason; search; search = search->parent) {
if (pcmk__str_eq(XML_TAG_DIFF, TYPE(search), pcmk__str_casei)) {
diff = search;
break;
}
}
if(diff) {
xml_patch_versions(diff, add, del);
for(search = reason; search; search = search->parent) {
if (pcmk__str_eq(XML_DIFF_CHANGE, TYPE(search), pcmk__str_casei)) {
change = search;
break;
}
}
}
}
if (reason == NULL) {
do_crm_log(level,
"Transition %d aborted: %s " CRM_XS " source=%s:%d "
"complete=%s", controld_globals.transition_graph->id,
abort_text, fn, line,
pcmk__btoa(controld_globals.transition_graph->complete));
} else if(change == NULL) {
GString *local_path = pcmk__element_xpath(reason);
CRM_ASSERT(local_path != NULL);
do_crm_log(level, "Transition %d aborted by %s.%s: %s "
CRM_XS " cib=%d.%d.%d source=%s:%d path=%s complete=%s",
controld_globals.transition_graph->id, TYPE(reason),
ID(reason), abort_text, add[0], add[1], add[2], fn, line,
(const char *) local_path->str,
pcmk__btoa(controld_globals.transition_graph->complete));
g_string_free(local_path, TRUE);
} else {
const char *kind = NULL;
const char *op = crm_element_value(change, XML_DIFF_OP);
const char *path = crm_element_value(change, XML_DIFF_PATH);
if(change == reason) {
if(strcmp(op, "create") == 0) {
reason = reason->children;
} else if(strcmp(op, "modify") == 0) {
reason = first_named_child(reason, XML_DIFF_RESULT);
if(reason) {
reason = reason->children;
}
}
}
kind = TYPE(reason);
if(strcmp(op, "delete") == 0) {
const char *shortpath = strrchr(path, '/');
do_crm_log(level, "Transition %d aborted by deletion of %s: %s "
CRM_XS " cib=%d.%d.%d source=%s:%d path=%s complete=%s",
controld_globals.transition_graph->id,
(shortpath? (shortpath + 1) : path), abort_text,
add[0], add[1], add[2], fn, line, path,
pcmk__btoa(controld_globals.transition_graph->complete));
} else if (pcmk__str_eq(XML_CIB_TAG_NVPAIR, kind, pcmk__str_none)) {
do_crm_log(level, "Transition %d aborted by %s doing %s %s=%s: %s "
CRM_XS " cib=%d.%d.%d source=%s:%d path=%s complete=%s",
controld_globals.transition_graph->id,
crm_element_value(reason, XML_ATTR_ID), op,
crm_element_value(reason, XML_NVPAIR_ATTR_NAME),
crm_element_value(reason, XML_NVPAIR_ATTR_VALUE),
abort_text, add[0], add[1], add[2], fn, line, path,
pcmk__btoa(controld_globals.transition_graph->complete));
} else if (pcmk__str_eq(XML_LRM_TAG_RSC_OP, kind, pcmk__str_none)) {
const char *magic = crm_element_value(reason, XML_ATTR_TRANSITION_MAGIC);
do_crm_log(level, "Transition %d aborted by operation %s '%s' on %s: %s "
CRM_XS " magic=%s cib=%d.%d.%d source=%s:%d complete=%s",
controld_globals.transition_graph->id,
crm_element_value(reason, XML_LRM_ATTR_TASK_KEY), op,
crm_element_value(reason, XML_LRM_ATTR_TARGET), abort_text,
magic, add[0], add[1], add[2], fn, line,
pcmk__btoa(controld_globals.transition_graph->complete));
} else if (pcmk__str_any_of(kind, XML_CIB_TAG_STATE, XML_CIB_TAG_NODE, NULL)) {
const char *uname = crm_peer_uname(ID(reason));
do_crm_log(level, "Transition %d aborted by %s '%s' on %s: %s "
CRM_XS " cib=%d.%d.%d source=%s:%d complete=%s",
controld_globals.transition_graph->id,
kind, op, (uname? uname : ID(reason)), abort_text,
add[0], add[1], add[2], fn, line,
pcmk__btoa(controld_globals.transition_graph->complete));
} else {
const char *id = ID(reason);
do_crm_log(level, "Transition %d aborted by %s.%s '%s': %s "
CRM_XS " cib=%d.%d.%d source=%s:%d path=%s complete=%s",
controld_globals.transition_graph->id,
TYPE(reason), (id? id : ""), (op? op : "change"),
abort_text, add[0], add[1], add[2], fn, line, path,
pcmk__btoa(controld_globals.transition_graph->complete));
}
}
if (controld_globals.transition_graph->complete) {
if (controld_get_period_transition_timer() > 0) {
controld_stop_transition_timer();
controld_start_transition_timer();
} else {
register_fsa_input(C_FSA_INTERNAL, I_PE_CALC, NULL);
}
return;
}
trigger_graph();
}
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