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diff --git a/lib/pacemaker/pcmk_sched_constraints.c b/lib/pacemaker/pcmk_sched_constraints.c
index edbb871208..a841af40e5 100644
--- a/lib/pacemaker/pcmk_sched_constraints.c
+++ b/lib/pacemaker/pcmk_sched_constraints.c
@@ -1,3154 +1,3154 @@
/*
* Copyright 2004-2021 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 <sys/param.h>
#include <sys/types.h>
#include <stdbool.h>
#include <regex.h>
#include <glib.h>
#include <crm/crm.h>
#include <crm/cib.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/common/xml_internal.h>
#include <crm/common/iso8601.h>
#include <crm/pengine/status.h>
#include <crm/pengine/internal.h>
#include <crm/pengine/rules.h>
#include <pacemaker-internal.h>
enum pe_order_kind {
pe_order_kind_optional,
pe_order_kind_mandatory,
pe_order_kind_serialize,
};
enum ordering_symmetry {
ordering_asymmetric, // the only relation in an asymmetric ordering
ordering_symmetric, // the normal relation in a symmetric ordering
ordering_symmetric_inverse, // the inverse relation in a symmetric ordering
};
#define EXPAND_CONSTRAINT_IDREF(__set, __rsc, __name) do { \
__rsc = pe_find_constraint_resource(data_set->resources, __name); \
if(__rsc == NULL) { \
pcmk__config_err("%s: No resource found for %s", __set, __name); \
return FALSE; \
} \
} while(0)
static pe__location_t *generate_location_rule(pe_resource_t *rsc,
xmlNode *rule_xml,
const char *discovery,
crm_time_t *next_change,
pe_working_set_t *data_set,
pe_re_match_data_t *match_data);
static void unpack_location(xmlNode *xml_obj, pe_working_set_t *data_set);
static void unpack_rsc_colocation(xmlNode *xml_obj, pe_working_set_t *data_set);
static bool
evaluate_lifetime(xmlNode *lifetime, pe_working_set_t *data_set)
{
bool result = FALSE;
crm_time_t *next_change = crm_time_new_undefined();
result = pe_evaluate_rules(lifetime, NULL, data_set->now, next_change);
if (crm_time_is_defined(next_change)) {
time_t recheck = (time_t) crm_time_get_seconds_since_epoch(next_change);
pe__update_recheck_time(recheck, data_set);
}
crm_time_free(next_change);
return result;
}
gboolean
unpack_constraints(xmlNode * xml_constraints, pe_working_set_t * data_set)
{
xmlNode *xml_obj = NULL;
xmlNode *lifetime = NULL;
for (xml_obj = pcmk__xe_first_child(xml_constraints); xml_obj != NULL;
xml_obj = pcmk__xe_next(xml_obj)) {
const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
const char *tag = crm_element_name(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without "
XML_ATTR_ID, tag);
continue;
}
crm_trace("Unpacking %s constraint '%s'", tag, id);
lifetime = first_named_child(xml_obj, "lifetime");
if (lifetime) {
pcmk__config_warn("Support for 'lifetime' attribute (in %s) is "
"deprecated (the rules it contains should "
"instead be direct descendents of the "
"constraint object)", id);
}
if (lifetime && !evaluate_lifetime(lifetime, data_set)) {
crm_info("Constraint %s %s is not active", tag, id);
} else if (pcmk__str_eq(XML_CONS_TAG_RSC_ORDER, tag, pcmk__str_casei)) {
unpack_rsc_order(xml_obj, data_set);
} else if (pcmk__str_eq(XML_CONS_TAG_RSC_DEPEND, tag, pcmk__str_casei)) {
unpack_rsc_colocation(xml_obj, data_set);
} else if (pcmk__str_eq(XML_CONS_TAG_RSC_LOCATION, tag, pcmk__str_casei)) {
unpack_location(xml_obj, data_set);
} else if (pcmk__str_eq(XML_CONS_TAG_RSC_TICKET, tag, pcmk__str_casei)) {
unpack_rsc_ticket(xml_obj, data_set);
} else {
pe_err("Unsupported constraint type: %s", tag);
}
}
return TRUE;
}
static const char *
invert_action(const char *action)
{
if (pcmk__str_eq(action, RSC_START, pcmk__str_casei)) {
return RSC_STOP;
} else if (pcmk__str_eq(action, RSC_STOP, pcmk__str_casei)) {
return RSC_START;
} else if (pcmk__str_eq(action, RSC_PROMOTE, pcmk__str_casei)) {
return RSC_DEMOTE;
} else if (pcmk__str_eq(action, RSC_DEMOTE, pcmk__str_casei)) {
return RSC_PROMOTE;
} else if (pcmk__str_eq(action, RSC_PROMOTED, pcmk__str_casei)) {
return RSC_DEMOTED;
} else if (pcmk__str_eq(action, RSC_DEMOTED, pcmk__str_casei)) {
return RSC_PROMOTED;
} else if (pcmk__str_eq(action, RSC_STARTED, pcmk__str_casei)) {
return RSC_STOPPED;
} else if (pcmk__str_eq(action, RSC_STOPPED, pcmk__str_casei)) {
return RSC_STARTED;
}
crm_warn("Unknown action '%s' specified in order constraint", action);
return NULL;
}
static enum pe_order_kind
get_ordering_type(xmlNode * xml_obj)
{
enum pe_order_kind kind_e = pe_order_kind_mandatory;
const char *kind = crm_element_value(xml_obj, XML_ORDER_ATTR_KIND);
if (kind == NULL) {
const char *score = crm_element_value(xml_obj, XML_RULE_ATTR_SCORE);
kind_e = pe_order_kind_mandatory;
if (score) {
// @COMPAT deprecated informally since 1.0.7, formally since 2.0.1
int score_i = char2score(score);
if (score_i == 0) {
kind_e = pe_order_kind_optional;
}
pe_warn_once(pe_wo_order_score,
"Support for 'score' in rsc_order is deprecated "
"and will be removed in a future release (use 'kind' instead)");
}
} else if (pcmk__str_eq(kind, "Mandatory", pcmk__str_casei)) {
kind_e = pe_order_kind_mandatory;
} else if (pcmk__str_eq(kind, "Optional", pcmk__str_casei)) {
kind_e = pe_order_kind_optional;
} else if (pcmk__str_eq(kind, "Serialize", pcmk__str_casei)) {
kind_e = pe_order_kind_serialize;
} else {
pcmk__config_err("Resetting '" XML_ORDER_ATTR_KIND "' for constraint "
"'%s' to Mandatory because '%s' is not valid",
crm_str(ID(xml_obj)), kind);
}
return kind_e;
}
static pe_resource_t *
pe_find_constraint_resource(GList *rsc_list, const char *id)
{
GList *rIter = NULL;
for (rIter = rsc_list; id && rIter; rIter = rIter->next) {
pe_resource_t *parent = rIter->data;
pe_resource_t *match = parent->fns->find_rsc(parent, id, NULL,
pe_find_renamed);
if (match != NULL) {
if(!pcmk__str_eq(match->id, id, pcmk__str_casei)) {
/* We found an instance of a clone instead */
match = uber_parent(match);
crm_debug("Found %s for %s", match->id, id);
}
return match;
}
}
crm_trace("No match for %s", id);
return NULL;
}
static gboolean
pe_find_constraint_tag(pe_working_set_t * data_set, const char * id, pe_tag_t ** tag)
{
gboolean rc = FALSE;
*tag = NULL;
rc = g_hash_table_lookup_extended(data_set->template_rsc_sets, id,
NULL, (gpointer*) tag);
if (rc == FALSE) {
rc = g_hash_table_lookup_extended(data_set->tags, id,
NULL, (gpointer*) tag);
if (rc == FALSE) {
crm_warn("No template or tag named '%s'", id);
return FALSE;
} else if (*tag == NULL) {
crm_warn("No resource is tagged with '%s'", id);
return FALSE;
}
} else if (*tag == NULL) {
crm_warn("No resource is derived from template '%s'", id);
return FALSE;
}
return rc;
}
static gboolean
valid_resource_or_tag(pe_working_set_t * data_set, const char * id,
pe_resource_t ** rsc, pe_tag_t ** tag)
{
gboolean rc = FALSE;
if (rsc) {
*rsc = NULL;
*rsc = pe_find_constraint_resource(data_set->resources, id);
if (*rsc) {
return TRUE;
}
}
if (tag) {
*tag = NULL;
rc = pe_find_constraint_tag(data_set, id, tag);
}
return rc;
}
/*!
* \internal
* \brief Get ordering symmetry from XML
*
* \param[in] xml_obj Ordering XML
* \param[in] parent_kind Default ordering kind
* \param[in] parent_symmetrical_s Parent element's symmetrical setting, if any
*
* \retval ordering_symmetric Ordering is symmetric
* \retval ordering_asymmetric Ordering is asymmetric
*/
static enum ordering_symmetry
get_ordering_symmetry(xmlNode *xml_obj, enum pe_order_kind parent_kind,
const char *parent_symmetrical_s)
{
const char *symmetrical_s = NULL;
enum pe_order_kind kind = parent_kind; // Default to parent's kind
// Check ordering XML for explicit kind
if ((crm_element_value(xml_obj, XML_ORDER_ATTR_KIND) != NULL)
|| (crm_element_value(xml_obj, XML_RULE_ATTR_SCORE) != NULL)) {
kind = get_ordering_type(xml_obj);
}
// Check ordering XML (and parent) for explicit symmetrical setting
symmetrical_s = crm_element_value(xml_obj, XML_CONS_ATTR_SYMMETRICAL);
if (symmetrical_s == NULL) {
symmetrical_s = parent_symmetrical_s;
}
if (symmetrical_s != NULL) {
if (crm_is_true(symmetrical_s)) {
if (kind == pe_order_kind_serialize) {
pcmk__config_warn("Ignoring " XML_CONS_ATTR_SYMMETRICAL
" for '%s' because not valid with "
XML_ORDER_ATTR_KIND " of 'Serialize'",
ID(xml_obj));
} else {
return ordering_symmetric;
}
}
return ordering_asymmetric;
}
// Use default symmetry
if (kind == pe_order_kind_serialize) {
return ordering_asymmetric;
}
return ordering_symmetric;
}
/*!
* \internal
* \brief Get ordering flags appropriate to ordering kind
*
* \param[in] kind Ordering kind
* \param[in] first Action name for 'first' action
* \param[in] symmetry This ordering's symmetry role
*
* \return Minimal ordering flags appropriate to \p kind
*/
static enum pe_ordering
ordering_flags_for_kind(enum pe_order_kind kind, const char *first,
enum ordering_symmetry symmetry)
{
enum pe_ordering flags = pe_order_none; // so we trace-log all flags set
pe__set_order_flags(flags, pe_order_optional);
switch (kind) {
case pe_order_kind_optional:
break;
case pe_order_kind_serialize:
pe__set_order_flags(flags, pe_order_serialize_only);
break;
case pe_order_kind_mandatory:
switch (symmetry) {
case ordering_asymmetric:
pe__set_order_flags(flags, pe_order_asymmetrical);
break;
case ordering_symmetric:
pe__set_order_flags(flags, pe_order_implies_then);
if (pcmk__strcase_any_of(first, RSC_START, RSC_PROMOTE,
NULL)) {
pe__set_order_flags(flags, pe_order_runnable_left);
}
break;
case ordering_symmetric_inverse:
pe__set_order_flags(flags, pe_order_implies_first);
break;
}
break;
}
return flags;
}
/*!
* \internal
* \brief Find resource corresponding to ID specified in ordering
*
* \param[in] xml Ordering XML
* \param[in] resource_attr XML attribute name for resource ID
* \param[in] instance_attr XML attribute name for instance number
* \param[in] data_set Cluster working set
*
* \return Resource corresponding to \p id, or NULL if none
*/
static pe_resource_t *
get_ordering_resource(xmlNode *xml, const char *resource_attr,
const char *instance_attr, pe_working_set_t *data_set)
{
pe_resource_t *rsc = NULL;
const char *rsc_id = crm_element_value(xml, resource_attr);
const char *instance_id = crm_element_value(xml, instance_attr);
if (rsc_id == NULL) {
pcmk__config_err("Ignoring constraint '%s' without %s",
ID(xml), resource_attr);
return NULL;
}
rsc = pe_find_constraint_resource(data_set->resources, rsc_id);
if (rsc == NULL) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"does not exist", ID(xml), rsc_id);
return NULL;
}
if (instance_id != NULL) {
if (!pe_rsc_is_clone(rsc)) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"is not a clone but instance '%s' was requested",
ID(xml), rsc_id, instance_id);
return NULL;
}
rsc = find_clone_instance(rsc, instance_id, data_set);
if (rsc == NULL) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"does not have an instance '%s'",
"'%s'", ID(xml), rsc_id, instance_id);
return NULL;
}
}
return rsc;
}
/*!
* \internal
* \brief Determine minimum number of 'first' instances required in ordering
*
* \param[in] rsc 'First' resource in ordering
* \param[in] xml Ordering XML
*
* \return Minimum 'first' instances required (or 0 if not applicable)
*/
static int
get_minimum_first_instances(pe_resource_t *rsc, xmlNode *xml)
{
if (pe_rsc_is_clone(rsc)) {
const char *clone_min = NULL;
clone_min = g_hash_table_lookup(rsc->meta,
XML_RSC_ATTR_INCARNATION_MIN);
if (clone_min != NULL) {
int clone_min_int = 0;
pcmk__scan_min_int(clone_min, &clone_min_int, 0);
return clone_min_int;
}
/* @COMPAT 1.1.13:
* require-all=false is deprecated equivalent of clone-min=1
*/
clone_min = crm_element_value(xml, "require-all");
if (clone_min != NULL) {
pe_warn_once(pe_wo_require_all,
"Support for require-all in ordering constraints "
"is deprecated and will be removed in a future release"
" (use clone-min clone meta-attribute instead)");
if (!crm_is_true(clone_min)) {
return 1;
}
}
}
return 0;
}
/*!
* \internal
* \brief Create orderings for a constraint with clone-min > 0
*
* \param[in] id Ordering ID
* \param[in] rsc_first 'First' resource in ordering (a clone)
* \param[in] action_first 'First' action in ordering
* \param[in] rsc_then 'Then' resource in ordering
* \param[in] action_then 'Then' action in ordering
* \param[in] flags Ordering flags
* \param[in] clone_min Minimum required instances of 'first'
* \param[in] data_set Cluster working set
*/
static void
clone_min_ordering(const char *id,
pe_resource_t *rsc_first, const char *action_first,
pe_resource_t *rsc_then, const char *action_then,
enum pe_ordering flags, int clone_min,
pe_working_set_t *data_set)
{
// Create a pseudo-action for when the minimum instances are active
char *task = crm_strdup_printf(CRM_OP_RELAXED_CLONE ":%s", id);
pe_action_t *clone_min_met = get_pseudo_op(task, data_set);
free(task);
/* Require the pseudo-action to have the required number of actions to be
* considered runnable before allowing the pseudo-action to be runnable.
*/
clone_min_met->required_runnable_before = clone_min;
pe__set_action_flags(clone_min_met, pe_action_requires_any);
// Order the actions for each clone instance before the pseudo-action
for (GList *rIter = rsc_first->children; rIter != NULL;
rIter = rIter->next) {
pe_resource_t *child = rIter->data;
custom_action_order(child, pcmk__op_key(child->id, action_first, 0),
NULL, NULL, NULL, clone_min_met,
pe_order_one_or_more|pe_order_implies_then_printed,
data_set);
}
// Order "then" action after the pseudo-action (if runnable)
custom_action_order(NULL, NULL, clone_min_met, rsc_then,
pcmk__op_key(rsc_then->id, action_then, 0),
NULL, flags|pe_order_runnable_left, data_set);
}
/*!
* \internal
* \brief Update ordering flags for restart-type=restart
*
* \param[in] rsc 'Then' resource in ordering
* \param[in] kind Ordering kind
* \param[in] flag Ordering flag to set (when applicable)
* \param[out] flags Ordering flag set to update
*
* \compat The restart-type resource meta-attribute is deprecated. Eventually,
* it will be removed, and pe_restart_ignore will be the only behavior,
* at which time this can just be removed entirely.
*/
#define handle_restart_type(rsc, kind, flag, flags) do { \
if (((kind) == pe_order_kind_optional) \
&& ((rsc)->restart_type == pe_restart_restart)) { \
pe__set_order_flags((flags), (flag)); \
} \
} while (0)
/*!
* \internal
* \brief Create new ordering for inverse of symmetric constraint
*
* \param[in] id Ordering ID (for logging only)
* \param[in] kind Ordering kind
* \param[in] rsc_first 'First' resource in ordering (a clone)
* \param[in] action_first 'First' action in ordering
* \param[in] rsc_then 'Then' resource in ordering
* \param[in] action_then 'Then' action in ordering
* \param[in] data_set Cluster working set
*/
static void
inverse_ordering(const char *id, enum pe_order_kind kind,
pe_resource_t *rsc_first, const char *action_first,
pe_resource_t *rsc_then, const char *action_then,
pe_working_set_t *data_set)
{
action_then = invert_action(action_then);
action_first = invert_action(action_first);
if ((action_then == NULL) || (action_first == NULL)) {
- pcmk__config_err("Cannot invert constraint '%s' "
- "(please specify inverse manually)", id);
+ pcmk__config_warn("Cannot invert constraint '%s' "
+ "(please specify inverse manually)", id);
} else {
enum pe_ordering flags = ordering_flags_for_kind(kind, action_first,
ordering_symmetric_inverse);
handle_restart_type(rsc_then, kind, pe_order_implies_first, flags);
new_rsc_order(rsc_then, action_then, rsc_first, action_first, flags,
data_set);
}
}
static gboolean
unpack_simple_rsc_order(xmlNode * xml_obj, pe_working_set_t * data_set)
{
pe_resource_t *rsc_then = NULL;
pe_resource_t *rsc_first = NULL;
int min_required_before = 0;
enum pe_order_kind kind = pe_order_kind_mandatory;
enum pe_ordering cons_weight = pe_order_none;
enum ordering_symmetry symmetry;
const char *action_then = NULL;
const char *action_first = NULL;
const char *id = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = crm_element_value(xml_obj, XML_ATTR_ID);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
rsc_first = get_ordering_resource(xml_obj, XML_ORDER_ATTR_FIRST,
XML_ORDER_ATTR_FIRST_INSTANCE,
data_set);
if (rsc_first == NULL) {
return FALSE;
}
rsc_then = get_ordering_resource(xml_obj, XML_ORDER_ATTR_THEN,
XML_ORDER_ATTR_THEN_INSTANCE,
data_set);
if (rsc_then == NULL) {
return FALSE;
}
action_first = crm_element_value(xml_obj, XML_ORDER_ATTR_FIRST_ACTION);
if (action_first == NULL) {
action_first = RSC_START;
}
action_then = crm_element_value(xml_obj, XML_ORDER_ATTR_THEN_ACTION);
if (action_then == NULL) {
action_then = action_first;
}
kind = get_ordering_type(xml_obj);
symmetry = get_ordering_symmetry(xml_obj, kind, NULL);
cons_weight = ordering_flags_for_kind(kind, action_first, symmetry);
handle_restart_type(rsc_then, kind, pe_order_implies_then, cons_weight);
/* If there is a minimum number of instances that must be runnable before
* the 'then' action is runnable, we use a pseudo-action for convenience:
* minimum number of clone instances have runnable actions ->
* pseudo-action is runnable -> dependency is runnable.
*/
min_required_before = get_minimum_first_instances(rsc_first, xml_obj);
if (min_required_before > 0) {
clone_min_ordering(id, rsc_first, action_first, rsc_then, action_then,
cons_weight, min_required_before, data_set);
} else {
new_rsc_order(rsc_first, action_first, rsc_then, action_then,
cons_weight, data_set);
}
if (symmetry == ordering_symmetric) {
inverse_ordering(id, kind, rsc_first, action_first,
rsc_then, action_then, data_set);
}
return TRUE;
}
static gboolean
expand_tags_in_sets(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
{
xmlNode *new_xml = NULL;
xmlNode *set = NULL;
gboolean any_refs = FALSE;
const char *cons_id = NULL;
*expanded_xml = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
new_xml = copy_xml(xml_obj);
cons_id = ID(new_xml);
for (set = pcmk__xe_first_child(new_xml); set != NULL;
set = pcmk__xe_next(set)) {
xmlNode *xml_rsc = NULL;
GList *tag_refs = NULL;
GList *gIter = NULL;
if (!pcmk__str_eq((const char *)set->name, XML_CONS_TAG_RSC_SET, pcmk__str_casei)) {
continue;
}
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
pe_resource_t *rsc = NULL;
pe_tag_t *tag = NULL;
const char *id = ID(xml_rsc);
if (!pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_casei)) {
continue;
}
if (valid_resource_or_tag(data_set, id, &rsc, &tag) == FALSE) {
pcmk__config_err("Ignoring resource sets for constraint '%s' "
"because '%s' is not a valid resource or tag",
cons_id, id);
free_xml(new_xml);
return FALSE;
} else if (rsc) {
continue;
} else if (tag) {
/* The resource_ref under the resource_set references a template/tag */
xmlNode *last_ref = xml_rsc;
/* A sample:
Original XML:
<resource_set id="tag1-colocation-0" sequential="true">
<resource_ref id="rsc1"/>
<resource_ref id="tag1"/>
<resource_ref id="rsc4"/>
</resource_set>
Now we are appending rsc2 and rsc3 which are tagged with tag1 right after it:
<resource_set id="tag1-colocation-0" sequential="true">
<resource_ref id="rsc1"/>
<resource_ref id="tag1"/>
<resource_ref id="rsc2"/>
<resource_ref id="rsc3"/>
<resource_ref id="rsc4"/>
</resource_set>
*/
for (gIter = tag->refs; gIter != NULL; gIter = gIter->next) {
const char *obj_ref = (const char *) gIter->data;
xmlNode *new_rsc_ref = NULL;
new_rsc_ref = xmlNewDocRawNode(getDocPtr(set), NULL,
(pcmkXmlStr) XML_TAG_RESOURCE_REF, NULL);
crm_xml_add(new_rsc_ref, XML_ATTR_ID, obj_ref);
xmlAddNextSibling(last_ref, new_rsc_ref);
last_ref = new_rsc_ref;
}
any_refs = TRUE;
/* Do not directly free '<resource_ref id="tag1"/>', which would
* break the further pcmk__xe_next(xml_rsc)) and
* cause "Invalid read" seen by valgrind. Just remember it for
* freeing later.
*/
tag_refs = g_list_append(tag_refs, xml_rsc);
}
}
/* Now free '<resource_ref id="tag1"/>', and finally get:
<resource_set id="tag1-colocation-0" sequential="true">
<resource_ref id="rsc1"/>
<resource_ref id="rsc2"/>
<resource_ref id="rsc3"/>
<resource_ref id="rsc4"/>
</resource_set>
*/
for (gIter = tag_refs; gIter != NULL; gIter = gIter->next) {
xmlNode *tag_ref = gIter->data;
free_xml(tag_ref);
}
g_list_free(tag_refs);
}
if (any_refs) {
*expanded_xml = new_xml;
} else {
free_xml(new_xml);
}
return TRUE;
}
static gboolean
tag_to_set(xmlNode * xml_obj, xmlNode ** rsc_set, const char * attr,
gboolean convert_rsc, pe_working_set_t * data_set)
{
const char *cons_id = NULL;
const char *id = NULL;
pe_resource_t *rsc = NULL;
pe_tag_t *tag = NULL;
*rsc_set = NULL;
CRM_CHECK((xml_obj != NULL) && (attr != NULL), return FALSE);
cons_id = ID(xml_obj);
if (cons_id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
id = crm_element_value(xml_obj, attr);
if (id == NULL) {
return TRUE;
}
if (valid_resource_or_tag(data_set, id, &rsc, &tag) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", cons_id, id);
return FALSE;
} else if (tag) {
GList *gIter = NULL;
/* A template/tag is referenced by the "attr" attribute (first, then, rsc or with-rsc).
Add the template/tag's corresponding "resource_set" which contains the resources derived
from it or tagged with it under the constraint. */
*rsc_set = create_xml_node(xml_obj, XML_CONS_TAG_RSC_SET);
crm_xml_add(*rsc_set, XML_ATTR_ID, id);
for (gIter = tag->refs; gIter != NULL; gIter = gIter->next) {
const char *obj_ref = (const char *) gIter->data;
xmlNode *rsc_ref = NULL;
rsc_ref = create_xml_node(*rsc_set, XML_TAG_RESOURCE_REF);
crm_xml_add(rsc_ref, XML_ATTR_ID, obj_ref);
}
/* Set sequential="false" for the resource_set */
crm_xml_add(*rsc_set, "sequential", XML_BOOLEAN_FALSE);
} else if (rsc && convert_rsc) {
/* Even a regular resource is referenced by "attr", convert it into a resource_set.
Because the other side of the constraint could be a template/tag reference. */
xmlNode *rsc_ref = NULL;
*rsc_set = create_xml_node(xml_obj, XML_CONS_TAG_RSC_SET);
crm_xml_add(*rsc_set, XML_ATTR_ID, id);
rsc_ref = create_xml_node(*rsc_set, XML_TAG_RESOURCE_REF);
crm_xml_add(rsc_ref, XML_ATTR_ID, id);
} else {
return TRUE;
}
/* Remove the "attr" attribute referencing the template/tag */
if (*rsc_set) {
xml_remove_prop(xml_obj, attr);
}
return TRUE;
}
static void unpack_rsc_location(xmlNode *xml_obj, pe_resource_t *rsc_lh,
const char *role, const char *score,
pe_working_set_t *data_set,
pe_re_match_data_t *match_data);
static void
unpack_simple_location(xmlNode *xml_obj, pe_working_set_t *data_set)
{
const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
const char *value = crm_element_value(xml_obj, XML_LOC_ATTR_SOURCE);
if(value) {
pe_resource_t *rsc_lh = pe_find_constraint_resource(data_set->resources, value);
unpack_rsc_location(xml_obj, rsc_lh, NULL, NULL, data_set, NULL);
}
value = crm_element_value(xml_obj, XML_LOC_ATTR_SOURCE_PATTERN);
if(value) {
regex_t *r_patt = calloc(1, sizeof(regex_t));
bool invert = FALSE;
GList *rIter = NULL;
if(value[0] == '!') {
value++;
invert = TRUE;
}
if (regcomp(r_patt, value, REG_EXTENDED)) {
pcmk__config_err("Ignoring constraint '%s' because "
XML_LOC_ATTR_SOURCE_PATTERN
" has invalid value '%s'", id, value);
regfree(r_patt);
free(r_patt);
return;
}
for (rIter = data_set->resources; rIter; rIter = rIter->next) {
pe_resource_t *r = rIter->data;
int nregs = 0;
regmatch_t *pmatch = NULL;
int status;
if(r_patt->re_nsub > 0) {
nregs = r_patt->re_nsub + 1;
} else {
nregs = 1;
}
pmatch = calloc(nregs, sizeof(regmatch_t));
status = regexec(r_patt, r->id, nregs, pmatch, 0);
if(invert == FALSE && status == 0) {
pe_re_match_data_t re_match_data = {
.string = r->id,
.nregs = nregs,
.pmatch = pmatch
};
crm_debug("'%s' matched '%s' for %s", r->id, value, id);
unpack_rsc_location(xml_obj, r, NULL, NULL, data_set, &re_match_data);
} else if (invert && (status != 0)) {
crm_debug("'%s' is an inverted match of '%s' for %s", r->id, value, id);
unpack_rsc_location(xml_obj, r, NULL, NULL, data_set, NULL);
} else {
crm_trace("'%s' does not match '%s' for %s", r->id, value, id);
}
free(pmatch);
}
regfree(r_patt);
free(r_patt);
}
}
static void
unpack_rsc_location(xmlNode *xml_obj, pe_resource_t *rsc_lh, const char *role,
const char *score, pe_working_set_t *data_set,
pe_re_match_data_t *re_match_data)
{
pe__location_t *location = NULL;
const char *id_lh = crm_element_value(xml_obj, XML_LOC_ATTR_SOURCE);
const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
const char *node = crm_element_value(xml_obj, XML_CIB_TAG_NODE);
const char *discovery = crm_element_value(xml_obj, XML_LOCATION_ATTR_DISCOVERY);
if (rsc_lh == NULL) {
pcmk__config_warn("Ignoring constraint '%s' because resource '%s' "
"does not exist", id, id_lh);
return;
}
if (score == NULL) {
score = crm_element_value(xml_obj, XML_RULE_ATTR_SCORE);
}
if (node != NULL && score != NULL) {
int score_i = char2score(score);
pe_node_t *match = pe_find_node(data_set->nodes, node);
if (!match) {
return;
}
location = rsc2node_new(id, rsc_lh, score_i, discovery, match, data_set);
} else {
bool empty = TRUE;
crm_time_t *next_change = crm_time_new_undefined();
/* This loop is logically parallel to pe_evaluate_rules(), except
* instead of checking whether any rule is active, we set up location
* constraints for each active rule.
*/
for (xmlNode *rule_xml = first_named_child(xml_obj, XML_TAG_RULE);
rule_xml != NULL; rule_xml = crm_next_same_xml(rule_xml)) {
empty = FALSE;
crm_trace("Unpacking %s/%s", id, ID(rule_xml));
generate_location_rule(rsc_lh, rule_xml, discovery, next_change,
data_set, re_match_data);
}
if (empty) {
pcmk__config_err("Ignoring constraint '%s' because it contains "
"no rules", id);
}
/* If there is a point in the future when the evaluation of a rule will
* change, make sure the scheduler is re-run by that time.
*/
if (crm_time_is_defined(next_change)) {
time_t t = (time_t) crm_time_get_seconds_since_epoch(next_change);
pe__update_recheck_time(t, data_set);
}
crm_time_free(next_change);
return;
}
if (role == NULL) {
role = crm_element_value(xml_obj, XML_RULE_ATTR_ROLE);
}
if (location && role) {
if (text2role(role) == RSC_ROLE_UNKNOWN) {
pe_err("Invalid constraint %s: Bad role %s", id, role);
return;
} else {
enum rsc_role_e r = text2role(role);
switch(r) {
case RSC_ROLE_UNKNOWN:
case RSC_ROLE_STARTED:
case RSC_ROLE_UNPROMOTED:
/* Applies to all */
location->role_filter = RSC_ROLE_UNKNOWN;
break;
default:
location->role_filter = r;
break;
}
}
}
}
static gboolean
unpack_location_tags(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
{
const char *id = NULL;
const char *id_lh = NULL;
const char *state_lh = NULL;
pe_resource_t *rsc_lh = NULL;
pe_tag_t *tag_lh = NULL;
xmlNode *new_xml = NULL;
xmlNode *rsc_set_lh = NULL;
*expanded_xml = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
/* Attempt to expand any template/tag references in possible resource sets. */
expand_tags_in_sets(xml_obj, &new_xml, data_set);
if (new_xml) {
/* There are resource sets referencing templates. Return with the expanded XML. */
crm_log_xml_trace(new_xml, "Expanded rsc_location...");
*expanded_xml = new_xml;
return TRUE;
}
id_lh = crm_element_value(xml_obj, XML_LOC_ATTR_SOURCE);
if (id_lh == NULL) {
return TRUE;
}
if (valid_resource_or_tag(data_set, id_lh, &rsc_lh, &tag_lh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_lh);
return FALSE;
} else if (rsc_lh) {
/* No template is referenced. */
return TRUE;
}
state_lh = crm_element_value(xml_obj, XML_RULE_ATTR_ROLE);
new_xml = copy_xml(xml_obj);
/* Convert the template/tag reference in "rsc" into a resource_set under the rsc_location constraint. */
if (tag_to_set(new_xml, &rsc_set_lh, XML_LOC_ATTR_SOURCE, FALSE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_lh) {
if (state_lh) {
/* A "rsc-role" is specified.
Move it into the converted resource_set as a "role"" attribute. */
crm_xml_add(rsc_set_lh, "role", state_lh);
xml_remove_prop(new_xml, XML_RULE_ATTR_ROLE);
}
crm_log_xml_trace(new_xml, "Expanded rsc_location...");
*expanded_xml = new_xml;
} else {
/* No sets */
free_xml(new_xml);
}
return TRUE;
}
static gboolean
unpack_location_set(xmlNode * location, xmlNode * set, pe_working_set_t * data_set)
{
xmlNode *xml_rsc = NULL;
pe_resource_t *resource = NULL;
const char *set_id;
const char *role;
const char *local_score;
CRM_CHECK(set != NULL, return FALSE);
set_id = ID(set);
if (set_id == NULL) {
pcmk__config_err("Ignoring " XML_CONS_TAG_RSC_SET " without "
XML_ATTR_ID " in constraint '%s'",
crm_str(ID(location)));
return FALSE;
}
role = crm_element_value(set, "role");
local_score = crm_element_value(set, XML_RULE_ATTR_SCORE);
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(set_id, resource, ID(xml_rsc));
unpack_rsc_location(location, resource, role, local_score, data_set, NULL);
}
}
return TRUE;
}
static void
unpack_location(xmlNode *xml_obj, pe_working_set_t *data_set)
{
xmlNode *set = NULL;
gboolean any_sets = FALSE;
xmlNode *orig_xml = NULL;
xmlNode *expanded_xml = NULL;
if (unpack_location_tags(xml_obj, &expanded_xml, data_set) == FALSE) {
return;
}
if (expanded_xml) {
orig_xml = xml_obj;
xml_obj = expanded_xml;
}
for (set = pcmk__xe_first_child(xml_obj); set != NULL;
set = pcmk__xe_next(set)) {
if (pcmk__str_eq((const char *)set->name, XML_CONS_TAG_RSC_SET, pcmk__str_none)) {
any_sets = TRUE;
set = expand_idref(set, data_set->input);
if (unpack_location_set(xml_obj, set, data_set) == FALSE) {
if (expanded_xml) {
free_xml(expanded_xml);
}
return;
}
}
}
if (expanded_xml) {
free_xml(expanded_xml);
xml_obj = orig_xml;
}
if (any_sets == FALSE) {
unpack_simple_location(xml_obj, data_set);
}
}
static int
get_node_score(const char *rule, const char *score, gboolean raw, pe_node_t * node, pe_resource_t *rsc)
{
int score_f = 0;
if (score == NULL) {
pe_err("Rule %s: no score specified. Assuming 0.", rule);
} else if (raw) {
score_f = char2score(score);
} else {
const char *attr_score = pe_node_attribute_calculated(node, score, rsc);
if (attr_score == NULL) {
crm_debug("Rule %s: node %s did not have a value for %s",
rule, node->details->uname, score);
score_f = -INFINITY;
} else {
crm_debug("Rule %s: node %s had value %s for %s",
rule, node->details->uname, attr_score, score);
score_f = char2score(attr_score);
}
}
return score_f;
}
static pe__location_t *
generate_location_rule(pe_resource_t *rsc, xmlNode *rule_xml,
const char *discovery, crm_time_t *next_change,
pe_working_set_t *data_set,
pe_re_match_data_t *re_match_data)
{
const char *rule_id = NULL;
const char *score = NULL;
const char *boolean = NULL;
const char *role = NULL;
GList *gIter = NULL;
GList *match_L = NULL;
gboolean do_and = TRUE;
gboolean accept = TRUE;
gboolean raw_score = TRUE;
gboolean score_allocated = FALSE;
pe__location_t *location_rule = NULL;
rule_xml = expand_idref(rule_xml, data_set->input);
rule_id = crm_element_value(rule_xml, XML_ATTR_ID);
boolean = crm_element_value(rule_xml, XML_RULE_ATTR_BOOLEAN_OP);
role = crm_element_value(rule_xml, XML_RULE_ATTR_ROLE);
crm_trace("Processing rule: %s", rule_id);
if (role != NULL && text2role(role) == RSC_ROLE_UNKNOWN) {
pe_err("Bad role specified for %s: %s", rule_id, role);
return NULL;
}
score = crm_element_value(rule_xml, XML_RULE_ATTR_SCORE);
if (score == NULL) {
score = crm_element_value(rule_xml, XML_RULE_ATTR_SCORE_ATTRIBUTE);
if (score != NULL) {
raw_score = FALSE;
}
}
if (pcmk__str_eq(boolean, "or", pcmk__str_casei)) {
do_and = FALSE;
}
location_rule = rsc2node_new(rule_id, rsc, 0, discovery, NULL, data_set);
if (location_rule == NULL) {
return NULL;
}
if ((re_match_data != NULL) && (re_match_data->nregs > 0)
&& (re_match_data->pmatch[0].rm_so != -1) && !raw_score) {
char *result = pe_expand_re_matches(score, re_match_data);
if (result != NULL) {
score = result;
score_allocated = TRUE;
}
}
if (role != NULL) {
crm_trace("Setting role filter: %s", role);
location_rule->role_filter = text2role(role);
if (location_rule->role_filter == RSC_ROLE_UNPROMOTED) {
/* Any promotable clone cannot be promoted without being in the
* unpromoted role first. Ergo, any constraint for the unpromoted
* role applies to every role.
*/
location_rule->role_filter = RSC_ROLE_UNKNOWN;
}
}
if (do_and) {
GList *gIter = NULL;
match_L = pcmk__copy_node_list(data_set->nodes, true);
for (gIter = match_L; gIter != NULL; gIter = gIter->next) {
pe_node_t *node = (pe_node_t *) gIter->data;
node->weight = get_node_score(rule_id, score, raw_score, node, rsc);
}
}
for (gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
int score_f = 0;
pe_node_t *node = (pe_node_t *) gIter->data;
pe_match_data_t match_data = {
.re = re_match_data,
.params = pe_rsc_params(rsc, node, data_set),
.meta = rsc->meta,
};
accept = pe_test_rule(rule_xml, node->details->attrs, RSC_ROLE_UNKNOWN,
data_set->now, next_change, &match_data);
crm_trace("Rule %s %s on %s", ID(rule_xml), accept ? "passed" : "failed",
node->details->uname);
score_f = get_node_score(rule_id, score, raw_score, node, rsc);
/* if(accept && score_f == -INFINITY) { */
/* accept = FALSE; */
/* } */
if (accept) {
pe_node_t *local = pe_find_node_id(match_L, node->details->id);
if (local == NULL && do_and) {
continue;
} else if (local == NULL) {
local = pe__copy_node(node);
match_L = g_list_append(match_L, local);
}
if (do_and == FALSE) {
local->weight = pe__add_scores(local->weight, score_f);
}
crm_trace("node %s now has weight %d", node->details->uname, local->weight);
} else if (do_and && !accept) {
/* remove it */
pe_node_t *delete = pe_find_node_id(match_L, node->details->id);
if (delete != NULL) {
match_L = g_list_remove(match_L, delete);
crm_trace("node %s did not match", node->details->uname);
}
free(delete);
}
}
if (score_allocated == TRUE) {
free((char *)score);
}
location_rule->node_list_rh = match_L;
if (location_rule->node_list_rh == NULL) {
crm_trace("No matching nodes for rule %s", rule_id);
return NULL;
}
crm_trace("%s: %d nodes matched", rule_id, g_list_length(location_rule->node_list_rh));
return location_rule;
}
static gint
sort_cons_priority_lh(gconstpointer a, gconstpointer b)
{
const pcmk__colocation_t *rsc_constraint1 = (const pcmk__colocation_t *) a;
const pcmk__colocation_t *rsc_constraint2 = (const pcmk__colocation_t *) b;
if (a == NULL) {
return 1;
}
if (b == NULL) {
return -1;
}
CRM_ASSERT(rsc_constraint1->rsc_lh != NULL);
CRM_ASSERT(rsc_constraint1->rsc_rh != NULL);
if (rsc_constraint1->rsc_lh->priority > rsc_constraint2->rsc_lh->priority) {
return -1;
}
if (rsc_constraint1->rsc_lh->priority < rsc_constraint2->rsc_lh->priority) {
return 1;
}
/* Process clones before primitives and groups */
if (rsc_constraint1->rsc_lh->variant > rsc_constraint2->rsc_lh->variant) {
return -1;
} else if (rsc_constraint1->rsc_lh->variant < rsc_constraint2->rsc_lh->variant) {
return 1;
}
/* @COMPAT scheduler <2.0.0: Process promotable clones before nonpromotable
* clones (probably unnecessary, but avoids having to update regression
* tests)
*/
if (rsc_constraint1->rsc_lh->variant == pe_clone) {
if (pcmk_is_set(rsc_constraint1->rsc_lh->flags, pe_rsc_promotable)
&& !pcmk_is_set(rsc_constraint2->rsc_lh->flags, pe_rsc_promotable)) {
return -1;
} else if (!pcmk_is_set(rsc_constraint1->rsc_lh->flags, pe_rsc_promotable)
&& pcmk_is_set(rsc_constraint2->rsc_lh->flags, pe_rsc_promotable)) {
return 1;
}
}
return strcmp(rsc_constraint1->rsc_lh->id, rsc_constraint2->rsc_lh->id);
}
static gint
sort_cons_priority_rh(gconstpointer a, gconstpointer b)
{
const pcmk__colocation_t *rsc_constraint1 = (const pcmk__colocation_t *) a;
const pcmk__colocation_t *rsc_constraint2 = (const pcmk__colocation_t *) b;
if (a == NULL) {
return 1;
}
if (b == NULL) {
return -1;
}
CRM_ASSERT(rsc_constraint1->rsc_lh != NULL);
CRM_ASSERT(rsc_constraint1->rsc_rh != NULL);
if (rsc_constraint1->rsc_rh->priority > rsc_constraint2->rsc_rh->priority) {
return -1;
}
if (rsc_constraint1->rsc_rh->priority < rsc_constraint2->rsc_rh->priority) {
return 1;
}
/* Process clones before primitives and groups */
if (rsc_constraint1->rsc_rh->variant > rsc_constraint2->rsc_rh->variant) {
return -1;
} else if (rsc_constraint1->rsc_rh->variant < rsc_constraint2->rsc_rh->variant) {
return 1;
}
/* @COMPAT scheduler <2.0.0: Process promotable clones before nonpromotable
* clones (probably unnecessary, but avoids having to update regression
* tests)
*/
if (rsc_constraint1->rsc_rh->variant == pe_clone) {
if (pcmk_is_set(rsc_constraint1->rsc_rh->flags, pe_rsc_promotable)
&& !pcmk_is_set(rsc_constraint2->rsc_rh->flags, pe_rsc_promotable)) {
return -1;
} else if (!pcmk_is_set(rsc_constraint1->rsc_rh->flags, pe_rsc_promotable)
&& pcmk_is_set(rsc_constraint2->rsc_rh->flags, pe_rsc_promotable)) {
return 1;
}
}
return strcmp(rsc_constraint1->rsc_rh->id, rsc_constraint2->rsc_rh->id);
}
static void
anti_colocation_order(pe_resource_t * first_rsc, int first_role,
pe_resource_t * then_rsc, int then_role,
pe_working_set_t * data_set)
{
const char *first_tasks[] = { NULL, NULL };
const char *then_tasks[] = { NULL, NULL };
int first_lpc = 0;
int then_lpc = 0;
/* Actions to make first_rsc lose first_role */
if (first_role == RSC_ROLE_PROMOTED) {
first_tasks[0] = CRMD_ACTION_DEMOTE;
} else {
first_tasks[0] = CRMD_ACTION_STOP;
if (first_role == RSC_ROLE_UNPROMOTED) {
first_tasks[1] = CRMD_ACTION_PROMOTE;
}
}
/* Actions to make then_rsc gain then_role */
if (then_role == RSC_ROLE_PROMOTED) {
then_tasks[0] = CRMD_ACTION_PROMOTE;
} else {
then_tasks[0] = CRMD_ACTION_START;
if (then_role == RSC_ROLE_UNPROMOTED) {
then_tasks[1] = CRMD_ACTION_DEMOTE;
}
}
for (first_lpc = 0; first_lpc <= 1 && first_tasks[first_lpc] != NULL; first_lpc++) {
for (then_lpc = 0; then_lpc <= 1 && then_tasks[then_lpc] != NULL; then_lpc++) {
new_rsc_order(first_rsc, first_tasks[first_lpc], then_rsc, then_tasks[then_lpc],
pe_order_anti_colocation, data_set);
}
}
}
void
pcmk__new_colocation(const char *id, const char *node_attr, int score,
pe_resource_t *rsc_lh, pe_resource_t *rsc_rh,
const char *state_lh, const char *state_rh,
bool influence, pe_working_set_t *data_set)
{
pcmk__colocation_t *new_con = NULL;
if (score == 0) {
crm_trace("Ignoring colocation '%s' because score is 0", id);
return;
}
if ((rsc_lh == NULL) || (rsc_rh == NULL)) {
pcmk__config_err("Ignoring colocation '%s' because resource "
"does not exist", id);
return;
}
new_con = calloc(1, sizeof(pcmk__colocation_t));
if (new_con == NULL) {
return;
}
if (pcmk__str_eq(state_lh, RSC_ROLE_STARTED_S, pcmk__str_null_matches | pcmk__str_casei)) {
state_lh = RSC_ROLE_UNKNOWN_S;
}
if (pcmk__str_eq(state_rh, RSC_ROLE_STARTED_S, pcmk__str_null_matches | pcmk__str_casei)) {
state_rh = RSC_ROLE_UNKNOWN_S;
}
new_con->id = id;
new_con->rsc_lh = rsc_lh;
new_con->rsc_rh = rsc_rh;
new_con->score = score;
new_con->role_lh = text2role(state_lh);
new_con->role_rh = text2role(state_rh);
new_con->node_attribute = node_attr;
new_con->influence = influence;
if (node_attr == NULL) {
node_attr = CRM_ATTR_UNAME;
}
pe_rsc_trace(rsc_lh, "%s ==> %s (%s %d)", rsc_lh->id, rsc_rh->id, node_attr, score);
rsc_lh->rsc_cons = g_list_insert_sorted(rsc_lh->rsc_cons, new_con, sort_cons_priority_rh);
rsc_rh->rsc_cons_lhs =
g_list_insert_sorted(rsc_rh->rsc_cons_lhs, new_con, sort_cons_priority_lh);
data_set->colocation_constraints = g_list_append(data_set->colocation_constraints, new_con);
if (score <= -INFINITY) {
anti_colocation_order(rsc_lh, new_con->role_lh, rsc_rh, new_con->role_rh, data_set);
anti_colocation_order(rsc_rh, new_con->role_rh, rsc_lh, new_con->role_lh, data_set);
}
}
/* LHS before RHS */
int
new_rsc_order(pe_resource_t * lh_rsc, const char *lh_task,
pe_resource_t * rh_rsc, const char *rh_task,
enum pe_ordering type, pe_working_set_t * data_set)
{
char *lh_key = NULL;
char *rh_key = NULL;
CRM_CHECK(lh_rsc != NULL, return -1);
CRM_CHECK(lh_task != NULL, return -1);
CRM_CHECK(rh_rsc != NULL, return -1);
CRM_CHECK(rh_task != NULL, return -1);
#if 0
/* We do not need to test if these reference stonith resources
* because the fencer has access to them even when they're not "running"
*/
if (validate_order_resources(lh_rsc, lh_task, rh_rsc, rh_task)) {
return -1;
}
#endif
lh_key = pcmk__op_key(lh_rsc->id, lh_task, 0);
rh_key = pcmk__op_key(rh_rsc->id, rh_task, 0);
return custom_action_order(lh_rsc, lh_key, NULL, rh_rsc, rh_key, NULL, type, data_set);
}
static char *
task_from_action_or_key(pe_action_t *action, const char *key)
{
char *res = NULL;
if (action) {
res = strdup(action->task);
} else if (key) {
parse_op_key(key, NULL, &res, NULL);
}
return res;
}
/* when order constraints are made between two resources start and stop actions
* those constraints have to be mirrored against the corresponding
* migration actions to ensure start/stop ordering is preserved during
* a migration */
static void
handle_migration_ordering(pe__ordering_t *order, pe_working_set_t *data_set)
{
char *lh_task = NULL;
char *rh_task = NULL;
gboolean rh_migratable;
gboolean lh_migratable;
if (order->lh_rsc == NULL || order->rh_rsc == NULL) {
return;
} else if (order->lh_rsc == order->rh_rsc) {
return;
/* don't mess with those constraints built between parent
* resources and the children */
} else if (is_parent(order->lh_rsc, order->rh_rsc)) {
return;
} else if (is_parent(order->rh_rsc, order->lh_rsc)) {
return;
}
lh_migratable = pcmk_is_set(order->lh_rsc->flags, pe_rsc_allow_migrate);
rh_migratable = pcmk_is_set(order->rh_rsc->flags, pe_rsc_allow_migrate);
/* one of them has to be migratable for
* the migrate ordering logic to be applied */
if (lh_migratable == FALSE && rh_migratable == FALSE) {
return;
}
/* at this point we have two resources which allow migrations that have an
* order dependency set between them. If those order dependencies involve
* start/stop actions, we need to mirror the corresponding migrate actions
* so order will be preserved. */
lh_task = task_from_action_or_key(order->lh_action, order->lh_action_task);
rh_task = task_from_action_or_key(order->rh_action, order->rh_action_task);
if (lh_task == NULL || rh_task == NULL) {
goto cleanup_order;
}
if (pcmk__str_eq(lh_task, RSC_START, pcmk__str_casei) && pcmk__str_eq(rh_task, RSC_START, pcmk__str_casei)) {
int flags = pe_order_optional;
if (lh_migratable && rh_migratable) {
/* A start then B start
* A migrate_from then B migrate_to */
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_MIGRATED, 0),
NULL, order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATE, 0),
NULL, flags, data_set);
}
if (rh_migratable) {
if (lh_migratable) {
pe__set_order_flags(flags, pe_order_apply_first_non_migratable);
}
/* A start then B start
* A start then B migrate_to... only if A start is not a part of a migration*/
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_START, 0),
NULL, order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATE, 0),
NULL, flags, data_set);
}
} else if (rh_migratable == TRUE && pcmk__str_eq(lh_task, RSC_STOP, pcmk__str_casei) && pcmk__str_eq(rh_task, RSC_STOP, pcmk__str_casei)) {
int flags = pe_order_optional;
if (lh_migratable) {
pe__set_order_flags(flags, pe_order_apply_first_non_migratable);
}
/* rh side is at the bottom of the stack during a stop. If we have a constraint
* stop B then stop A, if B is migrating via stop/start, and A is migrating using migration actions,
* we need to enforce that A's migrate_to action occurs after B's stop action. */
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_STOP, 0), NULL,
order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATE, 0),
NULL, flags, data_set);
/* We need to build the stop constraint against migrate_from as well
* to account for partial migrations. */
if (order->rh_rsc->partial_migration_target) {
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_STOP, 0),
NULL, order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATED, 0),
NULL, flags, data_set);
}
} else if (pcmk__str_eq(lh_task, RSC_PROMOTE, pcmk__str_casei) && pcmk__str_eq(rh_task, RSC_START, pcmk__str_casei)) {
int flags = pe_order_optional;
if (rh_migratable) {
/* A promote then B start
* A promote then B migrate_to */
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_PROMOTE, 0),
NULL, order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATE, 0),
NULL, flags, data_set);
}
} else if (pcmk__str_eq(lh_task, RSC_DEMOTE, pcmk__str_casei) && pcmk__str_eq(rh_task, RSC_STOP, pcmk__str_casei)) {
int flags = pe_order_optional;
if (rh_migratable) {
/* A demote then B stop
* A demote then B migrate_to */
custom_action_order(order->lh_rsc, pcmk__op_key(order->lh_rsc->id, RSC_DEMOTE, 0), NULL,
order->rh_rsc, pcmk__op_key(order->rh_rsc->id, RSC_MIGRATE, 0), NULL,
flags, data_set);
/* We need to build the demote constraint against migrate_from as well
* to account for partial migrations. */
if (order->rh_rsc->partial_migration_target) {
custom_action_order(order->lh_rsc,
pcmk__op_key(order->lh_rsc->id, RSC_DEMOTE, 0),
NULL, order->rh_rsc,
pcmk__op_key(order->rh_rsc->id, RSC_MIGRATED, 0),
NULL, flags, data_set);
}
}
}
cleanup_order:
free(lh_task);
free(rh_task);
}
/* LHS before RHS */
int
custom_action_order(pe_resource_t * lh_rsc, char *lh_action_task, pe_action_t * lh_action,
pe_resource_t * rh_rsc, char *rh_action_task, pe_action_t * rh_action,
enum pe_ordering type, pe_working_set_t * data_set)
{
pe__ordering_t *order = NULL;
if (lh_rsc == NULL && lh_action) {
lh_rsc = lh_action->rsc;
}
if (rh_rsc == NULL && rh_action) {
rh_rsc = rh_action->rsc;
}
if ((lh_action == NULL && lh_rsc == NULL)
|| (rh_action == NULL && rh_rsc == NULL)) {
crm_err("Invalid ordering (bug?)");
free(lh_action_task);
free(rh_action_task);
return -1;
}
order = calloc(1, sizeof(pe__ordering_t));
/* CRM_ASSERT(data_set->order_id != 291); */
order->id = data_set->order_id++;
order->type = type;
order->lh_rsc = lh_rsc;
order->rh_rsc = rh_rsc;
order->lh_action = lh_action;
order->rh_action = rh_action;
order->lh_action_task = lh_action_task;
order->rh_action_task = rh_action_task;
if (order->lh_action_task == NULL && lh_action) {
order->lh_action_task = strdup(lh_action->uuid);
}
if (order->rh_action_task == NULL && rh_action) {
order->rh_action_task = strdup(rh_action->uuid);
}
if (order->lh_rsc == NULL && lh_action) {
order->lh_rsc = lh_action->rsc;
}
if (order->rh_rsc == NULL && rh_action) {
order->rh_rsc = rh_action->rsc;
}
pe_rsc_trace(lh_rsc, "Created ordering %d for %s then %s",
(data_set->order_id - 1),
((lh_action_task == NULL)? "?" : lh_action_task),
((rh_action_task == NULL)? "?" : rh_action_task));
data_set->ordering_constraints = g_list_prepend(data_set->ordering_constraints, order);
handle_migration_ordering(order, data_set);
return order->id;
}
static gboolean
unpack_order_set(xmlNode * set, enum pe_order_kind parent_kind, pe_resource_t ** rsc,
pe_action_t ** begin, pe_action_t ** end, pe_action_t ** inv_begin,
pe_action_t ** inv_end, const char *parent_symmetrical_s,
pe_working_set_t * data_set)
{
xmlNode *xml_rsc = NULL;
GList *set_iter = NULL;
GList *resources = NULL;
pe_resource_t *last = NULL;
pe_resource_t *resource = NULL;
int local_kind = parent_kind;
gboolean sequential = FALSE;
enum pe_ordering flags = pe_order_optional;
enum ordering_symmetry symmetry;
char *key = NULL;
const char *id = ID(set);
const char *action = crm_element_value(set, "action");
const char *sequential_s = crm_element_value(set, "sequential");
const char *kind_s = crm_element_value(set, XML_ORDER_ATTR_KIND);
/*
char *pseudo_id = NULL;
char *end_id = NULL;
char *begin_id = NULL;
*/
if (action == NULL) {
action = RSC_START;
}
if (kind_s) {
local_kind = get_ordering_type(set);
}
if (sequential_s == NULL) {
sequential_s = "1";
}
sequential = crm_is_true(sequential_s);
symmetry = get_ordering_symmetry(set, parent_kind, parent_symmetrical_s);
flags = ordering_flags_for_kind(local_kind, action, symmetry);
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, resource, ID(xml_rsc));
resources = g_list_append(resources, resource);
}
}
if (pcmk__list_of_1(resources)) {
crm_trace("Single set: %s", id);
*rsc = resource;
*end = NULL;
*begin = NULL;
*inv_end = NULL;
*inv_begin = NULL;
goto done;
}
/*
pseudo_id = crm_strdup_printf("%s-%s", id, action);
end_id = crm_strdup_printf("%s-%s", pseudo_id, "end");
begin_id = crm_strdup_printf("%s-%s", pseudo_id, "begin");
*/
*rsc = NULL;
/*
*end = get_pseudo_op(end_id, data_set);
*begin = get_pseudo_op(begin_id, data_set);
free(pseudo_id);
free(begin_id);
free(end_id);
*/
set_iter = resources;
while (set_iter != NULL) {
resource = (pe_resource_t *) set_iter->data;
set_iter = set_iter->next;
key = pcmk__op_key(resource->id, action, 0);
/*
custom_action_order(NULL, NULL, *begin, resource, strdup(key), NULL,
flags|pe_order_implies_first_printed, data_set);
custom_action_order(resource, strdup(key), NULL, NULL, NULL, *end,
flags|pe_order_implies_then_printed, data_set);
*/
if (local_kind == pe_order_kind_serialize) {
/* Serialize before everything that comes after */
GList *gIter = NULL;
for (gIter = set_iter; gIter != NULL; gIter = gIter->next) {
pe_resource_t *then_rsc = (pe_resource_t *) gIter->data;
char *then_key = pcmk__op_key(then_rsc->id, action, 0);
custom_action_order(resource, strdup(key), NULL, then_rsc, then_key, NULL,
flags, data_set);
}
} else if (sequential) {
if (last != NULL) {
new_rsc_order(last, action, resource, action, flags, data_set);
}
last = resource;
}
free(key);
}
if (symmetry == ordering_asymmetric) {
goto done;
}
last = NULL;
action = invert_action(action);
flags = ordering_flags_for_kind(local_kind, action,
ordering_symmetric_inverse);
set_iter = resources;
while (set_iter != NULL) {
resource = (pe_resource_t *) set_iter->data;
set_iter = set_iter->next;
/*
key = pcmk__op_key(resource->id, action, 0);
custom_action_order(NULL, NULL, *inv_begin, resource, strdup(key), NULL,
flags|pe_order_implies_first_printed, data_set);
custom_action_order(resource, key, NULL, NULL, NULL, *inv_end,
flags|pe_order_implies_then_printed, data_set);
*/
if (sequential) {
if (last != NULL) {
new_rsc_order(resource, action, last, action, flags, data_set);
}
last = resource;
}
}
done:
g_list_free(resources);
return TRUE;
}
static gboolean
order_rsc_sets(const char *id, xmlNode * set1, xmlNode * set2, enum pe_order_kind kind,
pe_working_set_t *data_set, enum ordering_symmetry symmetry)
{
xmlNode *xml_rsc = NULL;
xmlNode *xml_rsc_2 = NULL;
pe_resource_t *rsc_1 = NULL;
pe_resource_t *rsc_2 = NULL;
const char *action_1 = crm_element_value(set1, "action");
const char *action_2 = crm_element_value(set2, "action");
const char *sequential_1 = crm_element_value(set1, "sequential");
const char *sequential_2 = crm_element_value(set2, "sequential");
const char *require_all_s = crm_element_value(set1, "require-all");
gboolean require_all = require_all_s ? crm_is_true(require_all_s) : TRUE;
enum pe_ordering flags = pe_order_none;
if (action_1 == NULL) {
action_1 = RSC_START;
};
if (action_2 == NULL) {
action_2 = RSC_START;
};
if (symmetry == ordering_symmetric_inverse) {
action_1 = invert_action(action_1);
action_2 = invert_action(action_2);
}
if(pcmk__str_eq(RSC_STOP, action_1, pcmk__str_casei) || pcmk__str_eq(RSC_DEMOTE, action_1, pcmk__str_casei)) {
/* Assuming: A -> ( B || C) -> D
* The one-or-more logic only applies during the start/promote phase
* During shutdown neither B nor can shutdown until D is down, so simply turn require_all back on.
*/
require_all = TRUE;
}
// @TODO is action_2 correct here?
flags = ordering_flags_for_kind(kind, action_2, symmetry);
/* If we have an un-ordered set1, whether it is sequential or not is irrelevant in regards to set2. */
if (!require_all) {
char *task = crm_strdup_printf(CRM_OP_RELAXED_SET ":%s", ID(set1));
pe_action_t *unordered_action = get_pseudo_op(task, data_set);
free(task);
pe__set_action_flags(unordered_action, pe_action_requires_any);
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (!pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
continue;
}
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
/* Add an ordering constraint between every element in set1 and the pseudo action.
* If any action in set1 is runnable the pseudo action will be runnable. */
custom_action_order(rsc_1, pcmk__op_key(rsc_1->id, action_1, 0),
NULL, NULL, NULL, unordered_action,
pe_order_one_or_more|pe_order_implies_then_printed,
data_set);
}
for (xml_rsc_2 = pcmk__xe_first_child(set2); xml_rsc_2 != NULL;
xml_rsc_2 = pcmk__xe_next(xml_rsc_2)) {
if (!pcmk__str_eq((const char *)xml_rsc_2->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
continue;
}
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc_2));
/* Add an ordering constraint between the pseudo action and every element in set2.
* If the pseudo action is runnable, every action in set2 will be runnable */
custom_action_order(NULL, NULL, unordered_action,
rsc_2, pcmk__op_key(rsc_2->id, action_2, 0),
NULL, flags|pe_order_runnable_left, data_set);
}
return TRUE;
}
if (crm_is_true(sequential_1)) {
if (symmetry == ordering_symmetric_inverse) {
/* get the first one */
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name,
XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
break;
}
}
} else {
/* get the last one */
const char *rid = NULL;
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name,
XML_TAG_RESOURCE_REF, pcmk__str_none)) {
rid = ID(xml_rsc);
}
}
EXPAND_CONSTRAINT_IDREF(id, rsc_1, rid);
}
}
if (crm_is_true(sequential_2)) {
if (symmetry == ordering_symmetric_inverse) {
/* get the last one */
const char *rid = NULL;
for (xml_rsc = pcmk__xe_first_child(set2); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name,
XML_TAG_RESOURCE_REF, pcmk__str_none)) {
rid = ID(xml_rsc);
}
}
EXPAND_CONSTRAINT_IDREF(id, rsc_2, rid);
} else {
/* get the first one */
for (xml_rsc = pcmk__xe_first_child(set2); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name,
XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc));
break;
}
}
}
}
if (rsc_1 != NULL && rsc_2 != NULL) {
new_rsc_order(rsc_1, action_1, rsc_2, action_2, flags, data_set);
} else if (rsc_1 != NULL) {
for (xml_rsc = pcmk__xe_first_child(set2); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc));
new_rsc_order(rsc_1, action_1, rsc_2, action_2, flags, data_set);
}
}
} else if (rsc_2 != NULL) {
xmlNode *xml_rsc = NULL;
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
new_rsc_order(rsc_1, action_1, rsc_2, action_2, flags, data_set);
}
}
} else {
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
xmlNode *xml_rsc_2 = NULL;
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
for (xml_rsc_2 = pcmk__xe_first_child(set2);
xml_rsc_2 != NULL;
xml_rsc_2 = pcmk__xe_next(xml_rsc_2)) {
if (pcmk__str_eq((const char *)xml_rsc_2->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc_2));
new_rsc_order(rsc_1, action_1, rsc_2, action_2, flags, data_set);
}
}
}
}
}
return TRUE;
}
static gboolean
unpack_order_tags(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
{
const char *id = NULL;
const char *id_first = NULL;
const char *id_then = NULL;
const char *action_first = NULL;
const char *action_then = NULL;
pe_resource_t *rsc_first = NULL;
pe_resource_t *rsc_then = NULL;
pe_tag_t *tag_first = NULL;
pe_tag_t *tag_then = NULL;
xmlNode *new_xml = NULL;
xmlNode *rsc_set_first = NULL;
xmlNode *rsc_set_then = NULL;
gboolean any_sets = FALSE;
*expanded_xml = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
/* Attempt to expand any template/tag references in possible resource sets. */
expand_tags_in_sets(xml_obj, &new_xml, data_set);
if (new_xml) {
/* There are resource sets referencing templates/tags. Return with the expanded XML. */
crm_log_xml_trace(new_xml, "Expanded rsc_order...");
*expanded_xml = new_xml;
return TRUE;
}
id_first = crm_element_value(xml_obj, XML_ORDER_ATTR_FIRST);
id_then = crm_element_value(xml_obj, XML_ORDER_ATTR_THEN);
if (id_first == NULL || id_then == NULL) {
return TRUE;
}
if (valid_resource_or_tag(data_set, id_first, &rsc_first, &tag_first) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_first);
return FALSE;
}
if (valid_resource_or_tag(data_set, id_then, &rsc_then, &tag_then) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_then);
return FALSE;
}
if (rsc_first && rsc_then) {
/* Neither side references any template/tag. */
return TRUE;
}
action_first = crm_element_value(xml_obj, XML_ORDER_ATTR_FIRST_ACTION);
action_then = crm_element_value(xml_obj, XML_ORDER_ATTR_THEN_ACTION);
new_xml = copy_xml(xml_obj);
/* Convert the template/tag reference in "first" into a resource_set under the order constraint. */
if (tag_to_set(new_xml, &rsc_set_first, XML_ORDER_ATTR_FIRST, TRUE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_first) {
if (action_first) {
/* A "first-action" is specified.
Move it into the converted resource_set as an "action" attribute. */
crm_xml_add(rsc_set_first, "action", action_first);
xml_remove_prop(new_xml, XML_ORDER_ATTR_FIRST_ACTION);
}
any_sets = TRUE;
}
/* Convert the template/tag reference in "then" into a resource_set under the order constraint. */
if (tag_to_set(new_xml, &rsc_set_then, XML_ORDER_ATTR_THEN, TRUE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_then) {
if (action_then) {
/* A "then-action" is specified.
Move it into the converted resource_set as an "action" attribute. */
crm_xml_add(rsc_set_then, "action", action_then);
xml_remove_prop(new_xml, XML_ORDER_ATTR_THEN_ACTION);
}
any_sets = TRUE;
}
if (any_sets) {
crm_log_xml_trace(new_xml, "Expanded rsc_order...");
*expanded_xml = new_xml;
} else {
free_xml(new_xml);
}
return TRUE;
}
gboolean
unpack_rsc_order(xmlNode * xml_obj, pe_working_set_t * data_set)
{
gboolean any_sets = FALSE;
pe_resource_t *rsc = NULL;
/*
pe_resource_t *last_rsc = NULL;
*/
pe_action_t *set_end = NULL;
pe_action_t *set_begin = NULL;
pe_action_t *set_inv_end = NULL;
pe_action_t *set_inv_begin = NULL;
xmlNode *set = NULL;
xmlNode *last = NULL;
xmlNode *orig_xml = NULL;
xmlNode *expanded_xml = NULL;
/*
pe_action_t *last_end = NULL;
pe_action_t *last_begin = NULL;
pe_action_t *last_inv_end = NULL;
pe_action_t *last_inv_begin = NULL;
*/
const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
const char *invert = crm_element_value(xml_obj, XML_CONS_ATTR_SYMMETRICAL);
enum pe_order_kind kind = get_ordering_type(xml_obj);
enum ordering_symmetry symmetry = get_ordering_symmetry(xml_obj, kind, NULL);
gboolean rc = TRUE;
rc = unpack_order_tags(xml_obj, &expanded_xml, data_set);
if (expanded_xml) {
orig_xml = xml_obj;
xml_obj = expanded_xml;
} else if (rc == FALSE) {
return FALSE;
}
for (set = pcmk__xe_first_child(xml_obj); set != NULL;
set = pcmk__xe_next(set)) {
if (pcmk__str_eq((const char *)set->name, XML_CONS_TAG_RSC_SET, pcmk__str_none)) {
any_sets = TRUE;
set = expand_idref(set, data_set->input);
if (unpack_order_set(set, kind, &rsc, &set_begin, &set_end,
&set_inv_begin, &set_inv_end, invert, data_set) == FALSE) {
return FALSE;
} else if (last != NULL) {
if (!order_rsc_sets(id, last, set, kind, data_set, symmetry)) {
return FALSE;
}
if ((symmetry == ordering_symmetric)
&& !order_rsc_sets(id, set, last, kind, data_set,
ordering_symmetric_inverse)) {
return FALSE;
}
}
last = set;
}
}
if (expanded_xml) {
free_xml(expanded_xml);
xml_obj = orig_xml;
}
if (any_sets == FALSE) {
return unpack_simple_rsc_order(xml_obj, data_set);
}
return TRUE;
}
/*!
* \internal
* \brief Return the boolean influence corresponding to configuration
*
* \param[in] coloc_id Colocation XML ID (for error logging)
* \param[in] rsc Resource involved in constraint (for default)
* \param[in] influence_s String value of influence option
*
* \return true if string evaluates true, false if string evaluates false,
* or value of resource's critical option if string is NULL or invalid
*/
static bool
unpack_influence(const char *coloc_id, const pe_resource_t *rsc,
const char *influence_s)
{
if (influence_s != NULL) {
int influence_i = 0;
if (crm_str_to_boolean(influence_s, &influence_i) < 0) {
pcmk__config_err("Constraint '%s' has invalid value for "
XML_COLOC_ATTR_INFLUENCE " (using default)",
coloc_id);
} else {
return (influence_i == TRUE);
}
}
return pcmk_is_set(rsc->flags, pe_rsc_critical);
}
static gboolean
unpack_colocation_set(xmlNode *set, int score, const char *coloc_id,
const char *influence_s, pe_working_set_t *data_set)
{
xmlNode *xml_rsc = NULL;
pe_resource_t *with = NULL;
pe_resource_t *resource = NULL;
const char *set_id = ID(set);
const char *role = crm_element_value(set, "role");
const char *sequential = crm_element_value(set, "sequential");
const char *ordering = crm_element_value(set, "ordering");
int local_score = score;
const char *score_s = crm_element_value(set, XML_RULE_ATTR_SCORE);
if (score_s) {
local_score = char2score(score_s);
}
if (local_score == 0) {
crm_trace("Ignoring colocation '%s' for set '%s' because score is 0",
coloc_id, set_id);
return TRUE;
}
if(ordering == NULL) {
ordering = "group";
}
if (sequential != NULL && crm_is_true(sequential) == FALSE) {
return TRUE;
} else if ((local_score > 0)
&& pcmk__str_eq(ordering, "group", pcmk__str_casei)) {
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(set_id, resource, ID(xml_rsc));
if (with != NULL) {
pe_rsc_trace(resource, "Colocating %s with %s", resource->id, with->id);
pcmk__new_colocation(set_id, NULL, local_score, resource,
with, role, role,
unpack_influence(coloc_id, resource,
influence_s),
data_set);
}
with = resource;
}
}
} else if (local_score > 0) {
pe_resource_t *last = NULL;
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(set_id, resource, ID(xml_rsc));
if (last != NULL) {
pe_rsc_trace(resource, "Colocating %s with %s", last->id, resource->id);
pcmk__new_colocation(set_id, NULL, local_score, last,
resource, role, role,
unpack_influence(coloc_id, last,
influence_s),
data_set);
}
last = resource;
}
}
} else {
/* Anti-colocating with every prior resource is
* the only way to ensure the intuitive result
* (i.e. that no one in the set can run with anyone else in the set)
*/
for (xml_rsc = pcmk__xe_first_child(set); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
xmlNode *xml_rsc_with = NULL;
bool influence = true;
EXPAND_CONSTRAINT_IDREF(set_id, resource, ID(xml_rsc));
influence = unpack_influence(coloc_id, resource, influence_s);
for (xml_rsc_with = pcmk__xe_first_child(set);
xml_rsc_with != NULL;
xml_rsc_with = pcmk__xe_next(xml_rsc_with)) {
if (pcmk__str_eq((const char *)xml_rsc_with->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
if (pcmk__str_eq(resource->id, ID(xml_rsc_with), pcmk__str_casei)) {
break;
}
EXPAND_CONSTRAINT_IDREF(set_id, with, ID(xml_rsc_with));
pe_rsc_trace(resource, "Anti-Colocating %s with %s", resource->id,
with->id);
pcmk__new_colocation(set_id, NULL, local_score,
resource, with, role, role,
influence, data_set);
}
}
}
}
}
return TRUE;
}
static gboolean
colocate_rsc_sets(const char *id, xmlNode * set1, xmlNode * set2, int score,
const char *influence_s, pe_working_set_t *data_set)
{
xmlNode *xml_rsc = NULL;
pe_resource_t *rsc_1 = NULL;
pe_resource_t *rsc_2 = NULL;
const char *role_1 = crm_element_value(set1, "role");
const char *role_2 = crm_element_value(set2, "role");
const char *sequential_1 = crm_element_value(set1, "sequential");
const char *sequential_2 = crm_element_value(set2, "sequential");
if (score == 0) {
crm_trace("Ignoring colocation '%s' between sets because score is 0",
id);
return TRUE;
}
if (sequential_1 == NULL || crm_is_true(sequential_1)) {
/* get the first one */
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
break;
}
}
}
if (sequential_2 == NULL || crm_is_true(sequential_2)) {
/* get the last one */
const char *rid = NULL;
for (xml_rsc = pcmk__xe_first_child(set2); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
rid = ID(xml_rsc);
}
}
EXPAND_CONSTRAINT_IDREF(id, rsc_2, rid);
}
if (rsc_1 != NULL && rsc_2 != NULL) {
pcmk__new_colocation(id, NULL, score, rsc_1, rsc_2, role_1, role_2,
unpack_influence(id, rsc_1, influence_s),
data_set);
} else if (rsc_1 != NULL) {
bool influence = unpack_influence(id, rsc_1, influence_s);
for (xml_rsc = pcmk__xe_first_child(set2); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc));
pcmk__new_colocation(id, NULL, score, rsc_1, rsc_2, role_1,
role_2, influence, data_set);
}
}
} else if (rsc_2 != NULL) {
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
pcmk__new_colocation(id, NULL, score, rsc_1, rsc_2, role_1,
role_2,
unpack_influence(id, rsc_1, influence_s),
data_set);
}
}
} else {
for (xml_rsc = pcmk__xe_first_child(set1); xml_rsc != NULL;
xml_rsc = pcmk__xe_next(xml_rsc)) {
if (pcmk__str_eq((const char *)xml_rsc->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
xmlNode *xml_rsc_2 = NULL;
bool influence = true;
EXPAND_CONSTRAINT_IDREF(id, rsc_1, ID(xml_rsc));
influence = unpack_influence(id, rsc_1, influence_s);
for (xml_rsc_2 = pcmk__xe_first_child(set2);
xml_rsc_2 != NULL;
xml_rsc_2 = pcmk__xe_next(xml_rsc_2)) {
if (pcmk__str_eq((const char *)xml_rsc_2->name, XML_TAG_RESOURCE_REF, pcmk__str_none)) {
EXPAND_CONSTRAINT_IDREF(id, rsc_2, ID(xml_rsc_2));
pcmk__new_colocation(id, NULL, score, rsc_1, rsc_2,
role_1, role_2, influence,
data_set);
}
}
}
}
}
return TRUE;
}
static void
unpack_simple_colocation(xmlNode *xml_obj, const char *id,
const char *influence_s, pe_working_set_t *data_set)
{
int score_i = 0;
const char *score = crm_element_value(xml_obj, XML_RULE_ATTR_SCORE);
const char *id_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE);
const char *id_rh = crm_element_value(xml_obj, XML_COLOC_ATTR_TARGET);
const char *state_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_ROLE);
const char *state_rh = crm_element_value(xml_obj, XML_COLOC_ATTR_TARGET_ROLE);
const char *attr = crm_element_value(xml_obj, XML_COLOC_ATTR_NODE_ATTR);
const char *symmetrical = crm_element_value(xml_obj, XML_CONS_ATTR_SYMMETRICAL);
// experimental syntax from pacemaker-next (unlikely to be adopted as-is)
const char *instance_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_INSTANCE);
const char *instance_rh = crm_element_value(xml_obj, XML_COLOC_ATTR_TARGET_INSTANCE);
pe_resource_t *rsc_lh = pe_find_constraint_resource(data_set->resources, id_lh);
pe_resource_t *rsc_rh = pe_find_constraint_resource(data_set->resources, id_rh);
if (rsc_lh == NULL) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"does not exist", id, id_lh);
return;
} else if (rsc_rh == NULL) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"does not exist", id, id_rh);
return;
} else if (instance_lh && pe_rsc_is_clone(rsc_lh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"is not a clone but instance '%s' was requested",
id, id_lh, instance_lh);
return;
} else if (instance_rh && pe_rsc_is_clone(rsc_rh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"is not a clone but instance '%s' was requested",
id, id_rh, instance_rh);
return;
}
if (instance_lh) {
rsc_lh = find_clone_instance(rsc_lh, instance_lh, data_set);
if (rsc_lh == NULL) {
pcmk__config_warn("Ignoring constraint '%s' because resource '%s' "
"does not have an instance '%s'",
id, id_lh, instance_lh);
return;
}
}
if (instance_rh) {
rsc_rh = find_clone_instance(rsc_rh, instance_rh, data_set);
if (rsc_rh == NULL) {
pcmk__config_warn("Ignoring constraint '%s' because resource '%s' "
"does not have an instance '%s'",
"'%s'", id, id_rh, instance_rh);
return;
}
}
if (crm_is_true(symmetrical)) {
pcmk__config_warn("The colocation constraint '"
XML_CONS_ATTR_SYMMETRICAL
"' attribute has been removed");
}
if (score) {
score_i = char2score(score);
}
pcmk__new_colocation(id, attr, score_i, rsc_lh, rsc_rh, state_lh, state_rh,
unpack_influence(id, rsc_lh, influence_s), data_set);
}
static gboolean
unpack_colocation_tags(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
{
const char *id = NULL;
const char *id_lh = NULL;
const char *id_rh = NULL;
const char *state_lh = NULL;
const char *state_rh = NULL;
pe_resource_t *rsc_lh = NULL;
pe_resource_t *rsc_rh = NULL;
pe_tag_t *tag_lh = NULL;
pe_tag_t *tag_rh = NULL;
xmlNode *new_xml = NULL;
xmlNode *rsc_set_lh = NULL;
xmlNode *rsc_set_rh = NULL;
gboolean any_sets = FALSE;
*expanded_xml = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
/* Attempt to expand any template/tag references in possible resource sets. */
expand_tags_in_sets(xml_obj, &new_xml, data_set);
if (new_xml) {
/* There are resource sets referencing templates/tags. Return with the expanded XML. */
crm_log_xml_trace(new_xml, "Expanded rsc_colocation...");
*expanded_xml = new_xml;
return TRUE;
}
id_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE);
id_rh = crm_element_value(xml_obj, XML_COLOC_ATTR_TARGET);
if (id_lh == NULL || id_rh == NULL) {
return TRUE;
}
if (valid_resource_or_tag(data_set, id_lh, &rsc_lh, &tag_lh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_lh);
return FALSE;
}
if (valid_resource_or_tag(data_set, id_rh, &rsc_rh, &tag_rh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_rh);
return FALSE;
}
if (rsc_lh && rsc_rh) {
/* Neither side references any template/tag. */
return TRUE;
}
if (tag_lh && tag_rh) {
/* A colocation constraint between two templates/tags makes no sense. */
pcmk__config_err("Ignoring constraint '%s' because two templates or "
"tags cannot be colocated", id);
return FALSE;
}
state_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_ROLE);
state_rh = crm_element_value(xml_obj, XML_COLOC_ATTR_TARGET_ROLE);
new_xml = copy_xml(xml_obj);
/* Convert the template/tag reference in "rsc" into a resource_set under the colocation constraint. */
if (tag_to_set(new_xml, &rsc_set_lh, XML_COLOC_ATTR_SOURCE, TRUE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_lh) {
if (state_lh) {
/* A "rsc-role" is specified.
Move it into the converted resource_set as a "role"" attribute. */
crm_xml_add(rsc_set_lh, "role", state_lh);
xml_remove_prop(new_xml, XML_COLOC_ATTR_SOURCE_ROLE);
}
any_sets = TRUE;
}
/* Convert the template/tag reference in "with-rsc" into a resource_set under the colocation constraint. */
if (tag_to_set(new_xml, &rsc_set_rh, XML_COLOC_ATTR_TARGET, TRUE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_rh) {
if (state_rh) {
/* A "with-rsc-role" is specified.
Move it into the converted resource_set as a "role"" attribute. */
crm_xml_add(rsc_set_rh, "role", state_rh);
xml_remove_prop(new_xml, XML_COLOC_ATTR_TARGET_ROLE);
}
any_sets = TRUE;
}
if (any_sets) {
crm_log_xml_trace(new_xml, "Expanded rsc_colocation...");
*expanded_xml = new_xml;
} else {
free_xml(new_xml);
}
return TRUE;
}
static void
unpack_rsc_colocation(xmlNode *xml_obj, pe_working_set_t *data_set)
{
int score_i = 0;
xmlNode *set = NULL;
xmlNode *last = NULL;
gboolean any_sets = FALSE;
xmlNode *orig_xml = NULL;
xmlNode *expanded_xml = NULL;
const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
const char *score = crm_element_value(xml_obj, XML_RULE_ATTR_SCORE);
const char *influence_s = crm_element_value(xml_obj,
XML_COLOC_ATTR_INFLUENCE);
if (score) {
score_i = char2score(score);
}
if (!unpack_colocation_tags(xml_obj, &expanded_xml, data_set)) {
return;
}
if (expanded_xml) {
orig_xml = xml_obj;
xml_obj = expanded_xml;
}
for (set = pcmk__xe_first_child(xml_obj); set != NULL;
set = pcmk__xe_next(set)) {
if (pcmk__str_eq((const char *)set->name, XML_CONS_TAG_RSC_SET, pcmk__str_none)) {
any_sets = TRUE;
set = expand_idref(set, data_set->input);
if (!unpack_colocation_set(set, score_i, id, influence_s,
data_set)) {
return;
}
if ((last != NULL) && !colocate_rsc_sets(id, last, set, score_i,
influence_s, data_set)) {
return;
}
last = set;
}
}
if (expanded_xml) {
free_xml(expanded_xml);
xml_obj = orig_xml;
}
if (!any_sets) {
unpack_simple_colocation(xml_obj, id, influence_s, data_set);
}
}
gboolean
rsc_ticket_new(const char *id, pe_resource_t * rsc_lh, pe_ticket_t * ticket,
const char *state_lh, const char *loss_policy, pe_working_set_t * data_set)
{
rsc_ticket_t *new_rsc_ticket = NULL;
if (rsc_lh == NULL) {
pcmk__config_err("Ignoring ticket '%s' because resource "
"does not exist", id);
return FALSE;
}
new_rsc_ticket = calloc(1, sizeof(rsc_ticket_t));
if (new_rsc_ticket == NULL) {
return FALSE;
}
if (pcmk__str_eq(state_lh, RSC_ROLE_STARTED_S, pcmk__str_null_matches | pcmk__str_casei)) {
state_lh = RSC_ROLE_UNKNOWN_S;
}
new_rsc_ticket->id = id;
new_rsc_ticket->ticket = ticket;
new_rsc_ticket->rsc_lh = rsc_lh;
new_rsc_ticket->role_lh = text2role(state_lh);
if (pcmk__str_eq(loss_policy, "fence", pcmk__str_casei)) {
if (pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
new_rsc_ticket->loss_policy = loss_ticket_fence;
} else {
pcmk__config_err("Resetting '" XML_TICKET_ATTR_LOSS_POLICY
"' for ticket '%s' to 'stop' "
"because fencing is not configured", ticket->id);
loss_policy = "stop";
}
}
if (new_rsc_ticket->loss_policy == loss_ticket_fence) {
crm_debug("On loss of ticket '%s': Fence the nodes running %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
} else if (pcmk__str_eq(loss_policy, "freeze", pcmk__str_casei)) {
crm_debug("On loss of ticket '%s': Freeze %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
new_rsc_ticket->loss_policy = loss_ticket_freeze;
} else if (pcmk__str_eq(loss_policy, "demote", pcmk__str_casei)) {
crm_debug("On loss of ticket '%s': Demote %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
new_rsc_ticket->loss_policy = loss_ticket_demote;
} else if (pcmk__str_eq(loss_policy, "stop", pcmk__str_casei)) {
crm_debug("On loss of ticket '%s': Stop %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
new_rsc_ticket->loss_policy = loss_ticket_stop;
} else {
if (new_rsc_ticket->role_lh == RSC_ROLE_PROMOTED) {
crm_debug("On loss of ticket '%s': Default to demote %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
new_rsc_ticket->loss_policy = loss_ticket_demote;
} else {
crm_debug("On loss of ticket '%s': Default to stop %s (%s)",
new_rsc_ticket->ticket->id, new_rsc_ticket->rsc_lh->id,
role2text(new_rsc_ticket->role_lh));
new_rsc_ticket->loss_policy = loss_ticket_stop;
}
}
pe_rsc_trace(rsc_lh, "%s (%s) ==> %s", rsc_lh->id, role2text(new_rsc_ticket->role_lh),
ticket->id);
rsc_lh->rsc_tickets = g_list_append(rsc_lh->rsc_tickets, new_rsc_ticket);
data_set->ticket_constraints = g_list_append(data_set->ticket_constraints, new_rsc_ticket);
if (new_rsc_ticket->ticket->granted == FALSE || new_rsc_ticket->ticket->standby) {
rsc_ticket_constraint(rsc_lh, new_rsc_ticket, data_set);
}
return TRUE;
}
static gboolean
unpack_rsc_ticket_set(xmlNode * set, pe_ticket_t * ticket, const char *loss_policy,
pe_working_set_t * data_set)
{
xmlNode *xml_rsc = NULL;
pe_resource_t *resource = NULL;
const char *set_id = NULL;
const char *role = NULL;
CRM_CHECK(set != NULL, return FALSE);
CRM_CHECK(ticket != NULL, return FALSE);
set_id = ID(set);
if (set_id == NULL) {
pcmk__config_err("Ignoring <" XML_CONS_TAG_RSC_SET "> without "
XML_ATTR_ID);
return FALSE;
}
role = crm_element_value(set, "role");
for (xml_rsc = first_named_child(set, XML_TAG_RESOURCE_REF);
xml_rsc != NULL; xml_rsc = crm_next_same_xml(xml_rsc)) {
EXPAND_CONSTRAINT_IDREF(set_id, resource, ID(xml_rsc));
pe_rsc_trace(resource, "Resource '%s' depends on ticket '%s'",
resource->id, ticket->id);
rsc_ticket_new(set_id, resource, ticket, role, loss_policy, data_set);
}
return TRUE;
}
static gboolean
unpack_simple_rsc_ticket(xmlNode * xml_obj, pe_working_set_t * data_set)
{
const char *id = NULL;
const char *ticket_str = crm_element_value(xml_obj, XML_TICKET_ATTR_TICKET);
const char *loss_policy = crm_element_value(xml_obj, XML_TICKET_ATTR_LOSS_POLICY);
pe_ticket_t *ticket = NULL;
const char *id_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE);
const char *state_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_ROLE);
// experimental syntax from pacemaker-next (unlikely to be adopted as-is)
const char *instance_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_INSTANCE);
pe_resource_t *rsc_lh = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
if (ticket_str == NULL) {
pcmk__config_err("Ignoring constraint '%s' without ticket specified",
id);
return FALSE;
} else {
ticket = g_hash_table_lookup(data_set->tickets, ticket_str);
}
if (ticket == NULL) {
pcmk__config_err("Ignoring constraint '%s' because ticket '%s' "
"does not exist", id, ticket_str);
return FALSE;
}
if (id_lh == NULL) {
pcmk__config_err("Ignoring constraint '%s' without resource", id);
return FALSE;
} else {
rsc_lh = pe_find_constraint_resource(data_set->resources, id_lh);
}
if (rsc_lh == NULL) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"does not exist", id, id_lh);
return FALSE;
} else if (instance_lh && pe_rsc_is_clone(rsc_lh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because resource '%s' "
"is not a clone but instance '%s' was requested",
id, id_lh, instance_lh);
return FALSE;
}
if (instance_lh) {
rsc_lh = find_clone_instance(rsc_lh, instance_lh, data_set);
if (rsc_lh == NULL) {
pcmk__config_warn("Ignoring constraint '%s' because resource '%s' "
"does not have an instance '%s'",
"'%s'", id, id_lh, instance_lh);
return FALSE;
}
}
rsc_ticket_new(id, rsc_lh, ticket, state_lh, loss_policy, data_set);
return TRUE;
}
static gboolean
unpack_rsc_ticket_tags(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
{
const char *id = NULL;
const char *id_lh = NULL;
const char *state_lh = NULL;
pe_resource_t *rsc_lh = NULL;
pe_tag_t *tag_lh = NULL;
xmlNode *new_xml = NULL;
xmlNode *rsc_set_lh = NULL;
gboolean any_sets = FALSE;
*expanded_xml = NULL;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
/* Attempt to expand any template/tag references in possible resource sets. */
expand_tags_in_sets(xml_obj, &new_xml, data_set);
if (new_xml) {
/* There are resource sets referencing templates/tags. Return with the expanded XML. */
crm_log_xml_trace(new_xml, "Expanded rsc_ticket...");
*expanded_xml = new_xml;
return TRUE;
}
id_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE);
if (id_lh == NULL) {
return TRUE;
}
if (valid_resource_or_tag(data_set, id_lh, &rsc_lh, &tag_lh) == FALSE) {
pcmk__config_err("Ignoring constraint '%s' because '%s' is not a "
"valid resource or tag", id, id_lh);
return FALSE;
} else if (rsc_lh) {
/* No template/tag is referenced. */
return TRUE;
}
state_lh = crm_element_value(xml_obj, XML_COLOC_ATTR_SOURCE_ROLE);
new_xml = copy_xml(xml_obj);
/* Convert the template/tag reference in "rsc" into a resource_set under the rsc_ticket constraint. */
if (tag_to_set(new_xml, &rsc_set_lh, XML_COLOC_ATTR_SOURCE, FALSE, data_set) == FALSE) {
free_xml(new_xml);
return FALSE;
}
if (rsc_set_lh) {
if (state_lh) {
/* A "rsc-role" is specified.
Move it into the converted resource_set as a "role"" attribute. */
crm_xml_add(rsc_set_lh, "role", state_lh);
xml_remove_prop(new_xml, XML_COLOC_ATTR_SOURCE_ROLE);
}
any_sets = TRUE;
}
if (any_sets) {
crm_log_xml_trace(new_xml, "Expanded rsc_ticket...");
*expanded_xml = new_xml;
} else {
free_xml(new_xml);
}
return TRUE;
}
gboolean
unpack_rsc_ticket(xmlNode * xml_obj, pe_working_set_t * data_set)
{
xmlNode *set = NULL;
gboolean any_sets = FALSE;
const char *id = NULL;
const char *ticket_str = crm_element_value(xml_obj, XML_TICKET_ATTR_TICKET);
const char *loss_policy = crm_element_value(xml_obj, XML_TICKET_ATTR_LOSS_POLICY);
pe_ticket_t *ticket = NULL;
xmlNode *orig_xml = NULL;
xmlNode *expanded_xml = NULL;
gboolean rc = TRUE;
CRM_CHECK(xml_obj != NULL, return FALSE);
id = ID(xml_obj);
if (id == NULL) {
pcmk__config_err("Ignoring <%s> constraint without " XML_ATTR_ID,
crm_element_name(xml_obj));
return FALSE;
}
if (data_set->tickets == NULL) {
data_set->tickets = pcmk__strkey_table(free, destroy_ticket);
}
if (ticket_str == NULL) {
pcmk__config_err("Ignoring constraint '%s' without ticket", id);
return FALSE;
} else {
ticket = g_hash_table_lookup(data_set->tickets, ticket_str);
}
if (ticket == NULL) {
ticket = ticket_new(ticket_str, data_set);
if (ticket == NULL) {
return FALSE;
}
}
rc = unpack_rsc_ticket_tags(xml_obj, &expanded_xml, data_set);
if (expanded_xml) {
orig_xml = xml_obj;
xml_obj = expanded_xml;
} else if (rc == FALSE) {
return FALSE;
}
for (set = pcmk__xe_first_child(xml_obj); set != NULL;
set = pcmk__xe_next(set)) {
if (pcmk__str_eq((const char *)set->name, XML_CONS_TAG_RSC_SET, pcmk__str_none)) {
any_sets = TRUE;
set = expand_idref(set, data_set->input);
if (unpack_rsc_ticket_set(set, ticket, loss_policy, data_set) == FALSE) {
return FALSE;
}
}
}
if (expanded_xml) {
free_xml(expanded_xml);
xml_obj = orig_xml;
}
if (any_sets == FALSE) {
return unpack_simple_rsc_ticket(xml_obj, data_set);
}
return TRUE;
}

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