Page MenuHomeClusterLabs Projects
Files F7609665

No OneTemporary
Actions

View Options

diff --git a/transitioner/events.c b/transitioner/events.c
index 1c146cd991..9116009479 100644
--- a/transitioner/events.c
+++ b/transitioner/events.c
@@ -1,542 +1,544 @@
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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 2.1 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <crm/crm.h>
#include <crm/cib.h>
#include <crm/msg_xml.h>
#include <crm/common/msg.h>
#include <crm/common/xml.h>
#include <tengine.h>
#include <heartbeat.h>
#include <clplumbing/Gmain_timeout.h>
#include <lrm/lrm_api.h>
crm_data_t *need_abort(crm_data_t *update);
void process_graph_event(crm_data_t *event, const char *event_node);
int match_graph_event(int action_id, crm_data_t *event, const char *event_node,
int op_status, int op_rc);
crm_data_t *
need_abort(crm_data_t *update)
{
crm_data_t *section_xml = NULL;
const char *section = NULL;
if(update == NULL) {
return NULL;
}
xml_prop_iter(update, name, value,
if(safe_str_eq(name, XML_ATTR_HAVE_QUORUM)) {
goto do_abort; /* possibly not required */
} else if(safe_str_eq(name, XML_ATTR_NUMPEERS)) {
goto do_abort;
} else if(safe_str_eq(name, XML_ATTR_GENERATION)) {
goto do_abort;
} else if(safe_str_eq(name, XML_ATTR_GENERATION_ADMIN)) {
goto do_abort;
}
continue;
do_abort:
crm_debug("Aborting on change to %s", name);
crm_log_xml_debug(update, "Abort: CIB Attrs");
return update;
);
section = XML_CIB_TAG_NODES;
section_xml = get_object_root(section, update);
xml_child_iter(section_xml, child,
return section_xml;
);
section = XML_CIB_TAG_RESOURCES;
section_xml = get_object_root(section, update);
xml_child_iter(section_xml, child,
return section_xml;
);
section = XML_CIB_TAG_CONSTRAINTS;
section_xml = get_object_root(section, update);
xml_child_iter(section_xml, child,
return section_xml;
);
section = XML_CIB_TAG_CRMCONFIG;
section_xml = get_object_root(section, update);
xml_child_iter(section_xml, child,
return section_xml;
);
return NULL;
}
static gboolean
fail_incompletable_actions(crm_graph_t *graph, const char *down_node)
{
const char *target = NULL;
crm_data_t *last_action = NULL;
slist_iter(
synapse, synapse_t, graph->synapses, lpc,
if (synapse->confirmed) {
continue;
}
slist_iter(
action, crm_action_t, synapse->actions, lpc,
if(action->type == action_type_pseudo || action->confirmed) {
continue;
}
target = crm_element_value(action->xml, XML_LRM_ATTR_TARGET);
if(safe_str_eq(target, down_node)) {
action->failed = TRUE;
last_action = action->xml;
update_graph(graph, action);
crm_notice("Action %d (%s) is scheduled for %s (offline)",
action->id, ID(action->xml), down_node);
}
);
);
if(last_action != NULL) {
crm_warn("Node %s shutdown resulted in un-runnable actions", down_node);
abort_transition(INFINITY, tg_restart, "Node failure", last_action);
return TRUE;
}
return FALSE;
}
gboolean
extract_event(crm_data_t *msg)
{
int shutdown = 0;
const char *event_node = NULL;
/*
[cib fragment]
...
<status>
<node_state id="node1" state=CRMD_STATE_ACTIVE exp_state="active">
<lrm>
<lrm_resources>
<rsc_state id="" rsc_id="rsc4" node_id="node1" rsc_state="stopped"/>
*/
crm_debug_4("Extracting event from %s", crm_element_name(msg));
xml_child_iter_filter(
msg, node_state, XML_CIB_TAG_STATE,
crm_data_t *attrs = NULL;
crm_data_t *resources = NULL;
const char *ccm_state = crm_element_value(
node_state, XML_CIB_ATTR_INCCM);
const char *crmd_state = crm_element_value(
node_state, XML_CIB_ATTR_CRMDSTATE);
/* Transient node attribute changes... */
event_node = crm_element_value(node_state, XML_ATTR_ID);
crm_debug_2("Processing state update from %s", event_node);
crm_log_xml_debug_3(node_state, "Processing");
attrs = find_xml_node(
node_state, XML_TAG_TRANSIENT_NODEATTRS, FALSE);
if(attrs != NULL) {
crm_info("Aborting on "XML_TAG_TRANSIENT_NODEATTRS" changes for %s", event_node);
abort_transition(INFINITY, tg_restart,
XML_TAG_TRANSIENT_NODEATTRS, attrs);
}
resources = find_xml_node(node_state, XML_CIB_TAG_LRM, FALSE);
resources = find_xml_node(
resources, XML_LRM_TAG_RESOURCES, FALSE);
/* LRM resource update... */
xml_child_iter(
resources, rsc,
xml_child_iter(
rsc, rsc_op,
crm_log_xml_debug_3(rsc_op, "Processing resource update");
process_graph_event(rsc_op, event_node);
);
);
/*
* node state update... possibly from a shutdown we requested
*/
if(safe_str_eq(ccm_state, XML_BOOLEAN_FALSE)
|| safe_str_eq(crmd_state, CRMD_JOINSTATE_DOWN)) {
crm_action_t *shutdown = NULL;
shutdown = match_down_event(0, event_node, NULL);
if(shutdown != NULL) {
update_graph(transition_graph, shutdown);
trigger_graph();
} else {
crm_info("Stonith/shutdown of %s not matched", event_node);
abort_transition(INFINITY, tg_restart, "Node failure", node_state);
}
fail_incompletable_actions(transition_graph, event_node);
}
shutdown = 0;
ha_msg_value_int(node_state, XML_CIB_ATTR_SHUTDOWN, &shutdown);
if(shutdown != 0) {
crm_info("Aborting on "XML_CIB_ATTR_SHUTDOWN" attribute for %s", event_node);
abort_transition(INFINITY, tg_restart, "Shutdown request", node_state);
}
);
return TRUE;
}
static void
update_failcount(crm_data_t *event, const char *event_node, int rc)
{
int interval = 0;
char *task = NULL;
char *rsc_id = NULL;
char *attr_name = NULL;
const char *id = ID(event);
const char *on_uuid = event_node;
const char *value = XML_NVPAIR_ATTR_VALUE"++";
if(rc == 99) {
/* this is an internal code for "we're busy, try again" */
return;
}
CRM_CHECK(on_uuid != NULL, return);
CRM_CHECK(parse_op_key(id, &rsc_id, &task, &interval),
crm_err("Couldn't parse: %s", ID(event));
goto bail);
CRM_CHECK(task != NULL, goto bail);
CRM_CHECK(rsc_id != NULL, goto bail);
if(safe_str_eq(task, CRMD_ACTION_START)
|| safe_str_eq(task, CRMD_ACTION_STOP)) {
interval = 1;
value = "INFINITY";
}
if(interval > 0) {
attr_name = crm_concat("fail-count", rsc_id, '-');
crm_warn("Updating failcount for %s on %s after failed %s: rc=%d",
rsc_id, on_uuid, task, rc);
update_attr(te_cib_conn, cib_none, XML_CIB_TAG_STATUS,
on_uuid, NULL,NULL, attr_name, value, FALSE);
crm_free(attr_name);
}
bail:
crm_free(rsc_id);
crm_free(task);
}
static int
status_from_rc(crm_action_t *action, int orig_status, int rc)
{
int target_rc = 0;
int status = orig_status;
const char *target_rc_s = g_hash_table_lookup(
action->params, crm_meta_name(XML_ATTR_TE_TARGET_RC));
if(target_rc_s != NULL) {
crm_debug_2("Target rc: %s vs. %d", target_rc_s, rc);
target_rc = crm_parse_int(target_rc_s, NULL);
}
if(target_rc == rc) {
crm_debug_2("Target rc: == %d", rc);
if(status != LRM_OP_DONE) {
crm_debug_2("Re-mapping op status to"
" LRM_OP_DONE for rc=%d", rc);
status = LRM_OP_DONE;
}
} else {
crm_debug_2("Target rc: != %d", rc);
if(status != LRM_OP_ERROR) {
crm_info("Re-mapping op status to"
" LRM_OP_ERROR for rc=%d", rc);
status = LRM_OP_ERROR;
}
}
/* 99 is the code we use for direct nack's */
if(rc != 99 && status != LRM_OP_DONE) {
const char *task, *uname;
task = crm_element_value(action->xml, XML_LRM_ATTR_TASK);
uname = crm_element_value(action->xml, XML_LRM_ATTR_TARGET);
crm_warn("Action %s on %s failed (target: %s vs. rc: %d): %s",
task, uname, crm_str(target_rc_s), rc, op_status2text(status));
}
return status;
}
/*
* returns the ID of the action if a match is found
* returns -1 if a match was not found
* returns -2 if a match was found but the action failed (and was
* not allowed to)
*/
int
match_graph_event(int action_id, crm_data_t *event, const char *event_node,
int op_status, int op_rc)
{
const char *target = NULL;
const char *allow_fail = NULL;
const char *this_event = ID(event);
crm_action_t *action = NULL;
action = get_action(action_id, FALSE);
if(action == NULL) {
return -1;
}
op_status = status_from_rc(action, op_status, op_rc);
if(op_status != LRM_OP_DONE) {
update_failcount(event, event_node, op_rc);
}
/* Process OP status */
switch(op_status) {
case LRM_OP_PENDING:
crm_debug("Ignoring pending operation");
return action->id;
break;
case LRM_OP_DONE:
break;
case LRM_OP_ERROR:
case LRM_OP_TIMEOUT:
case LRM_OP_NOTSUPPORTED:
action->failed = TRUE;
break;
case LRM_OP_CANCELLED:
/* do nothing?? */
crm_err("Dont know what to do for cancelled ops yet");
break;
default:
action->failed = TRUE;
crm_err("Unsupported action result: %d", op_status);
}
/* stop this event's timer if it had one */
stop_te_timer(action->timer);
action->confirmed = TRUE;
update_graph(transition_graph, action);
trigger_graph();
if(action->failed) {
allow_fail = g_hash_table_lookup(
action->params, crm_meta_name(XML_ATTR_TE_ALLOWFAIL));
if(crm_is_true(allow_fail)) {
action->failed = FALSE;
}
}
if(action->failed) {
abort_transition(action->synapse->priority+1,
tg_restart, "Event failed", event);
}
target = crm_element_value(action->xml, XML_LRM_ATTR_TARGET);
te_log_action(LOG_INFO, "Action %s (%d) confirmed on %s (rc=%d)",
crm_str(this_event), action->id, crm_str(target),
op_status);
return action->id;
}
crm_action_t *
get_action(int id, gboolean confirmed)
{
slist_iter(
synapse, synapse_t, transition_graph->synapses, lpc,
slist_iter(
action, crm_action_t, synapse->actions, lpc2,
if(action->id == id) {
if(confirmed) {
stop_te_timer(action->timer);
action->confirmed = TRUE;
}
return action;
}
)
);
return NULL;
}
crm_action_t *
match_down_event(int id, const char *target, const char *filter)
{
const char *this_action = NULL;
const char *this_node = NULL;
crm_action_t *match = NULL;
slist_iter(
synapse, synapse_t, transition_graph->synapses, lpc,
/* lookup event */
slist_iter(
action, crm_action_t, synapse->actions, lpc2,
if(id > 0 && action->id == id) {
match = action;
break;
}
this_action = crm_element_value(
action->xml, XML_LRM_ATTR_TASK);
if(action->type != action_type_crm) {
continue;
} else if(safe_str_eq(this_action, CRM_OP_LRM_REFRESH)){
continue;
} else if(filter != NULL
&& safe_str_neq(this_action, filter)) {
continue;
}
this_node = crm_element_value(
action->xml, XML_LRM_ATTR_TARGET_UUID);
if(this_node == NULL) {
crm_log_xml_err(action->xml, "No node uuid");
}
if(safe_str_neq(this_node, target)) {
crm_debug("Action %d : Node mismatch: %s",
action->id, this_node);
continue;
}
match = action;
break;
);
if(match != NULL) {
/* stop this event's timer if it had one */
break;
}
);
if(match != NULL) {
/* stop this event's timer if it had one */
crm_debug("Match found for action %d: %s on %s", id,
crm_element_value(match->xml, XML_LRM_ATTR_TASK_KEY),
target);
stop_te_timer(match->timer);
match->confirmed = TRUE;
} else if(id > 0) {
crm_err("No match for action %d", id);
} else {
crm_warn("No match for shutdown action on %s", target);
}
return match;
}
void
process_graph_event(crm_data_t *event, const char *event_node)
{
int rc = -1;
int status = -1;
int action = -1;
int transition_num = -1;
char *update_te_uuid = NULL;
gboolean passed = FALSE;
const char *id = NULL;
const char *magic = NULL;
CRM_ASSERT(event != NULL);
id = ID(event);
magic = crm_element_value(event, XML_ATTR_TRANSITION_MAGIC);
if(magic == NULL) {
/* non-change */
return;
}
CRM_CHECK(decode_transition_magic(
magic, &update_te_uuid, &transition_num, &action,
&status, &rc),
crm_err("Invalid event %s detected", id);
abort_transition(INFINITY, tg_restart,"Bad event", event);
);
if(status == LRM_OP_PENDING) {
goto bail;
}
if(transition_num == -1) {
- crm_err("Action %s initiated outside of a transition", id);
+ crm_err("Action %s (%s) initiated outside of a transition",
+ id, magic);
abort_transition(INFINITY, tg_restart,"Unexpected event",event);
} else if(action < 0 || safe_str_neq(update_te_uuid, te_uuid)) {
- crm_info("Action %s initiated by a different transitioner", id);
+ crm_info("Action %s (%s) initiated by a different transitioner",
+ id, magic);
abort_transition(INFINITY, tg_restart,"Foreign event", event);
} else if(transition_graph->id != transition_num) {
crm_info("Detected action %s from a different transition:"
" %d vs. %d", id, transition_num, transition_graph->id);
abort_transition(INFINITY, tg_restart,"Old event", event);
} else if(transition_graph->complete) {
crm_info("Action %s arrived after a completed transition", id);
abort_transition(INFINITY, tg_restart, "Inactive graph", event);
} else if(match_graph_event(
action, event, event_node, status, rc) < 0) {
crm_err("Unknown graph action %s", id);
abort_transition(INFINITY, tg_restart, "Unknown event", event);
} else {
passed = TRUE;
crm_debug_2("Processed update to %s: %s", id, magic);
}
if(passed == FALSE && rc != EXECRA_OK) {
update_failcount(event, event_node, rc);
}
bail:
crm_free(update_te_uuid);
return;
}

File Metadata

Mime Type
text/x-diff
Expires
Thu, Oct 16, 12:12 AM (1 d, 5 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
2530740
Default Alt Text
(14 KB)

Event Timeline