complex.c
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complex.c
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	/*
	* Copyright 2004-2023 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#include <crm_internal.h>

	#include <crm/pengine/rules.h>
	#include <crm/pengine/internal.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml_internal.h>
	#include <crm/common/scheduler_internal.h>

	#include "pe_status_private.h"

	void populate_hash(xmlNode * nvpair_list, GHashTable * hash, const char **attrs, int attrs_length);

	static pe_node_t active_node(const pe_resource_t rsc, unsigned int *count_all,
	unsigned int *count_clean);

	resource_object_functions_t resource_class_functions[] = {
	{
	native_unpack,
	native_find_rsc,
	native_parameter,
	native_print,
	native_active,
	native_resource_state,
	native_location,
	native_free,
	pe__count_common,
	pe__native_is_filtered,
	active_node,
	pe__primitive_max_per_node,
	},
	{
	group_unpack,
	native_find_rsc,
	native_parameter,
	group_print,
	group_active,
	group_resource_state,
	native_location,
	group_free,
	pe__count_common,
	pe__group_is_filtered,
	active_node,
	pe__group_max_per_node,
	},
	{
	clone_unpack,
	native_find_rsc,
	native_parameter,
	clone_print,
	clone_active,
	clone_resource_state,
	native_location,
	clone_free,
	pe__count_common,
	pe__clone_is_filtered,
	active_node,
	pe__clone_max_per_node,
	},
	{
	pe__unpack_bundle,
	native_find_rsc,
	native_parameter,
	pe__print_bundle,
	pe__bundle_active,
	pe__bundle_resource_state,
	native_location,
	pe__free_bundle,
	pe__count_bundle,
	pe__bundle_is_filtered,
	pe__bundle_active_node,
	pe__bundle_max_per_node,
	}
	};

	static enum pe_obj_types
	get_resource_type(const char *name)
	{
	if (pcmk__str_eq(name, XML_CIB_TAG_RESOURCE, pcmk__str_casei)) {
	return pcmk_rsc_variant_primitive;

	} else if (pcmk__str_eq(name, XML_CIB_TAG_GROUP, pcmk__str_casei)) {
	return pcmk_rsc_variant_group;

	} else if (pcmk__str_eq(name, XML_CIB_TAG_INCARNATION, pcmk__str_casei)) {
	return pcmk_rsc_variant_clone;

	} else if (pcmk__str_eq(name, PCMK_XE_PROMOTABLE_LEGACY, pcmk__str_casei)) {
	// @COMPAT deprecated since 2.0.0
	return pcmk_rsc_variant_clone;

	} else if (pcmk__str_eq(name, XML_CIB_TAG_CONTAINER, pcmk__str_casei)) {
	return pcmk_rsc_variant_bundle;
	}

	return pcmk_rsc_variant_unknown;
	}

	static void
	dup_attr(gpointer key, gpointer value, gpointer user_data)
	{
	add_hash_param(user_data, key, value);
	}

	static void
	expand_parents_fixed_nvpairs(pe_resource_t * rsc, pe_rule_eval_data_t * rule_data, GHashTable * meta_hash, pe_working_set_t * data_set)
	{
	GHashTable *parent_orig_meta = pcmk__strkey_table(free, free);
	pe_resource_t *p = rsc->parent;

	if (p == NULL) {
	return ;
	}

	/* Search all parent resources, get the fixed value of "meta_attributes" set only in the original xml, and stack it in the hash table. */
	/* The fixed value of the lower parent resource takes precedence and is not overwritten. */
	while(p != NULL) {
	/* A hash table for comparison is generated, including the id-ref. */
	pe__unpack_dataset_nvpairs(p->xml, XML_TAG_META_SETS,
	rule_data, parent_orig_meta, NULL, FALSE, data_set);
	p = p->parent;
	}

	/* If there is a fixed value of "meta_attributes" of the parent resource, it will be processed. */
	if (parent_orig_meta != NULL) {
	GHashTableIter iter;
	char *key = NULL;
	char *value = NULL;

	g_hash_table_iter_init(&iter, parent_orig_meta);
	while (g_hash_table_iter_next(&iter, (gpointer ) &key, (gpointer ) &value)) {
	/* Parameters set in the original xml of the parent resource will also try to overwrite the child resource. */
	/* Attributes that already exist in the child lease are not updated. */
	dup_attr(key, value, meta_hash);
	}
	}

	if (parent_orig_meta != NULL) {
	g_hash_table_destroy(parent_orig_meta);
	}

	return ;

	}
	void
	get_meta_attributes(GHashTable * meta_hash, pe_resource_t * rsc,
	pe_node_t * node, pe_working_set_t * data_set)
	{
	pe_rsc_eval_data_t rsc_rule_data = {
	.standard = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS),
	.provider = crm_element_value(rsc->xml, XML_AGENT_ATTR_PROVIDER),
	.agent = crm_element_value(rsc->xml, XML_EXPR_ATTR_TYPE)
	};

	pe_rule_eval_data_t rule_data = {
	.node_hash = NULL,
	.role = pcmk_role_unknown,
	.now = data_set->now,
	.match_data = NULL,
	.rsc_data = &rsc_rule_data,
	.op_data = NULL
	};

	if (node) {
	rule_data.node_hash = node->details->attrs;
	}

	for (xmlAttrPtr a = pcmk__xe_first_attr(rsc->xml); a != NULL; a = a->next) {
	const char prop_name = (const char ) a->name;
	const char *prop_value = pcmk__xml_attr_value(a);

	add_hash_param(meta_hash, prop_name, prop_value);
	}

	pe__unpack_dataset_nvpairs(rsc->xml, XML_TAG_META_SETS, &rule_data,
	meta_hash, NULL, FALSE, data_set);

	/* Set the "meta_attributes" explicitly set in the parent resource to the hash table of the child resource. */
	/* If it is already explicitly set as a child, it will not be overwritten. */
	if (rsc->parent != NULL) {
	expand_parents_fixed_nvpairs(rsc, &rule_data, meta_hash, data_set);
	}

	/* check the defaults */
	pe__unpack_dataset_nvpairs(data_set->rsc_defaults, XML_TAG_META_SETS,
	&rule_data, meta_hash, NULL, FALSE, data_set);

	/* If there is "meta_attributes" that the parent resource has not explicitly set, set a value that is not set from rsc_default either. */
	/* The values already set up to this point will not be overwritten. */
	if (rsc->parent) {
	g_hash_table_foreach(rsc->parent->meta, dup_attr, meta_hash);
	}
	}

	void
	get_rsc_attributes(GHashTable meta_hash, const pe_resource_t rsc,
	const pe_node_t node, pe_working_set_t data_set)
	{
	pe_rule_eval_data_t rule_data = {
	.node_hash = NULL,
	.role = pcmk_role_unknown,
	.now = data_set->now,
	.match_data = NULL,
	.rsc_data = NULL,
	.op_data = NULL
	};

	if (node) {
	rule_data.node_hash = node->details->attrs;
	}

	pe__unpack_dataset_nvpairs(rsc->xml, XML_TAG_ATTR_SETS, &rule_data,
	meta_hash, NULL, FALSE, data_set);

	/* set anything else based on the parent */
	if (rsc->parent != NULL) {
	get_rsc_attributes(meta_hash, rsc->parent, node, data_set);

	} else {
	/* and finally check the defaults */
	pe__unpack_dataset_nvpairs(data_set->rsc_defaults, XML_TAG_ATTR_SETS,
	&rule_data, meta_hash, NULL, FALSE, data_set);
	}
	}

	static char *
	template_op_key(xmlNode * op)
	{
	const char *name = crm_element_value(op, "name");
	const char *role = crm_element_value(op, "role");
	char *key = NULL;

	if ((role == NULL)
	\|\| pcmk__strcase_any_of(role, PCMK__ROLE_STARTED, PCMK__ROLE_UNPROMOTED,
	PCMK__ROLE_UNPROMOTED_LEGACY, NULL)) {
	role = PCMK__ROLE_UNKNOWN;
	}

	key = crm_strdup_printf("%s-%s", name, role);
	return key;
	}

	static gboolean
	unpack_template(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
	{
	xmlNode *cib_resources = NULL;
	xmlNode *template = NULL;
	xmlNode *new_xml = NULL;
	xmlNode *child_xml = NULL;
	xmlNode *rsc_ops = NULL;
	xmlNode *template_ops = NULL;
	const char *template_ref = NULL;
	const char *clone = NULL;
	const char *id = NULL;

	if (xml_obj == NULL) {
	pe_err("No resource object for template unpacking");
	return FALSE;
	}

	template_ref = crm_element_value(xml_obj, XML_CIB_TAG_RSC_TEMPLATE);
	if (template_ref == NULL) {
	return TRUE;
	}

	id = ID(xml_obj);
	if (id == NULL) {
	pe_err("'%s' object must have a id", xml_obj->name);
	return FALSE;
	}

	if (pcmk__str_eq(template_ref, id, pcmk__str_none)) {
	pe_err("The resource object '%s' should not reference itself", id);
	return FALSE;
	}

	cib_resources = get_xpath_object("//"XML_CIB_TAG_RESOURCES, data_set->input, LOG_TRACE);
	if (cib_resources == NULL) {
	pe_err("No resources configured");
	return FALSE;
	}

	template = pcmk__xe_match(cib_resources, XML_CIB_TAG_RSC_TEMPLATE,
	XML_ATTR_ID, template_ref);
	if (template == NULL) {
	pe_err("No template named '%s'", template_ref);
	return FALSE;
	}

	new_xml = copy_xml(template);
	xmlNodeSetName(new_xml, xml_obj->name);
	crm_xml_add(new_xml, XML_ATTR_ID, id);

	clone = crm_element_value(xml_obj, XML_RSC_ATTR_INCARNATION);
	if(clone) {
	crm_xml_add(new_xml, XML_RSC_ATTR_INCARNATION, clone);
	}

	template_ops = find_xml_node(new_xml, "operations", FALSE);

	for (child_xml = pcmk__xe_first_child(xml_obj); child_xml != NULL;
	child_xml = pcmk__xe_next(child_xml)) {
	xmlNode *new_child = NULL;

	new_child = add_node_copy(new_xml, child_xml);

	if (pcmk__str_eq((const char *)new_child->name, "operations", pcmk__str_none)) {
	rsc_ops = new_child;
	}
	}

	if (template_ops && rsc_ops) {
	xmlNode *op = NULL;
	GHashTable *rsc_ops_hash = pcmk__strkey_table(free, NULL);

	for (op = pcmk__xe_first_child(rsc_ops); op != NULL;
	op = pcmk__xe_next(op)) {

	char *key = template_op_key(op);

	g_hash_table_insert(rsc_ops_hash, key, op);
	}

	for (op = pcmk__xe_first_child(template_ops); op != NULL;
	op = pcmk__xe_next(op)) {

	char *key = template_op_key(op);

	if (g_hash_table_lookup(rsc_ops_hash, key) == NULL) {
	add_node_copy(rsc_ops, op);
	}

	free(key);
	}

	if (rsc_ops_hash) {
	g_hash_table_destroy(rsc_ops_hash);
	}

	free_xml(template_ops);
	}

	/free_xml(expanded_xml); */
	*expanded_xml = new_xml;

	/* Disable multi-level templates for now */
	/*if(unpack_template(new_xml, expanded_xml, data_set) == FALSE) {
	free_xml(*expanded_xml);
	*expanded_xml = NULL;

	return FALSE;
	} */

	return TRUE;
	}

	static gboolean
	add_template_rsc(xmlNode * xml_obj, pe_working_set_t * data_set)
	{
	const char *template_ref = NULL;
	const char *id = NULL;

	if (xml_obj == NULL) {
	pe_err("No resource object for processing resource list of template");
	return FALSE;
	}

	template_ref = crm_element_value(xml_obj, XML_CIB_TAG_RSC_TEMPLATE);
	if (template_ref == NULL) {
	return TRUE;
	}

	id = ID(xml_obj);
	if (id == NULL) {
	pe_err("'%s' object must have a id", xml_obj->name);
	return FALSE;
	}

	if (pcmk__str_eq(template_ref, id, pcmk__str_none)) {
	pe_err("The resource object '%s' should not reference itself", id);
	return FALSE;
	}

	if (add_tag_ref(data_set->template_rsc_sets, template_ref, id) == FALSE) {
	return FALSE;
	}

	return TRUE;
	}

	static bool
	detect_promotable(pe_resource_t *rsc)
	{
	const char *promotable = g_hash_table_lookup(rsc->meta,
	XML_RSC_ATTR_PROMOTABLE);

	if (crm_is_true(promotable)) {
	return TRUE;
	}

	// @COMPAT deprecated since 2.0.0
	if (pcmk__xe_is(rsc->xml, PCMK_XE_PROMOTABLE_LEGACY)) {
	/* @TODO in some future version, pe_warn_once() here,
	* then drop support in even later version
	*/
	g_hash_table_insert(rsc->meta, strdup(XML_RSC_ATTR_PROMOTABLE),
	strdup(XML_BOOLEAN_TRUE));
	return TRUE;
	}
	return FALSE;
	}

	static void
	free_params_table(gpointer data)
	{
	g_hash_table_destroy((GHashTable *) data);
	}

	/*!
	* \brief Get a table of resource parameters
	*
	* \param[in,out] rsc Resource to query
	* \param[in] node Node for evaluating rules (NULL for defaults)
	* \param[in,out] data_set Cluster working set
	*
	* \return Hash table containing resource parameter names and values
	* (or NULL if \p rsc or \p data_set is NULL)
	* \note The returned table will be destroyed when the resource is freed, so
	* callers should not destroy it.
	*/
	GHashTable *
	pe_rsc_params(pe_resource_t rsc, const pe_node_t node,
	pe_working_set_t *data_set)
	{
	GHashTable *params_on_node = NULL;

	/* A NULL node is used to request the resource's default parameters
	* (not evaluated for node), but we always want something non-NULL
	* as a hash table key.
	*/
	const char *node_name = "";

	// Sanity check
	if ((rsc == NULL) \|\| (data_set == NULL)) {
	return NULL;
	}
	if ((node != NULL) && (node->details->uname != NULL)) {
	node_name = node->details->uname;
	}

	// Find the parameter table for given node
	if (rsc->parameter_cache == NULL) {
	rsc->parameter_cache = pcmk__strikey_table(free, free_params_table);
	} else {
	params_on_node = g_hash_table_lookup(rsc->parameter_cache, node_name);
	}

	// If none exists yet, create one with parameters evaluated for node
	if (params_on_node == NULL) {
	params_on_node = pcmk__strkey_table(free, free);
	get_rsc_attributes(params_on_node, rsc, node, data_set);
	g_hash_table_insert(rsc->parameter_cache, strdup(node_name),
	params_on_node);
	}
	return params_on_node;
	}

	/*!
	* \internal
	* \brief Unpack a resource's "requires" meta-attribute
	*
	* \param[in,out] rsc Resource being unpacked
	* \param[in] value Value of "requires" meta-attribute
	* \param[in] is_default Whether \p value was selected by default
	*/
	static void
	unpack_requires(pe_resource_t rsc, const char value, bool is_default)
	{
	if (pcmk__str_eq(value, PCMK__VALUE_NOTHING, pcmk__str_casei)) {

	} else if (pcmk__str_eq(value, PCMK__VALUE_QUORUM, pcmk__str_casei)) {
	pe__set_resource_flags(rsc, pcmk_rsc_needs_quorum);

	} else if (pcmk__str_eq(value, PCMK__VALUE_FENCING, pcmk__str_casei)) {
	pe__set_resource_flags(rsc, pcmk_rsc_needs_fencing);
	if (!pcmk_is_set(rsc->cluster->flags, pcmk_sched_fencing_enabled)) {
	pcmk__config_warn("%s requires fencing but fencing is disabled",
	rsc->id);
	}

	} else if (pcmk__str_eq(value, PCMK__VALUE_UNFENCING, pcmk__str_casei)) {
	if (pcmk_is_set(rsc->flags, pcmk_rsc_fence_device)) {
	pcmk__config_warn("Resetting \"" XML_RSC_ATTR_REQUIRES "\" for %s "
	"to \"" PCMK__VALUE_QUORUM "\" because fencing "
	"devices cannot require unfencing", rsc->id);
	unpack_requires(rsc, PCMK__VALUE_QUORUM, true);
	return;

	} else if (!pcmk_is_set(rsc->cluster->flags,
	pcmk_sched_fencing_enabled)) {
	pcmk__config_warn("Resetting \"" XML_RSC_ATTR_REQUIRES "\" for %s "
	"to \"" PCMK__VALUE_QUORUM "\" because fencing "
	"is disabled", rsc->id);
	unpack_requires(rsc, PCMK__VALUE_QUORUM, true);
	return;

	} else {
	pe__set_resource_flags(rsc, pcmk_rsc_needs_fencing
	\|pcmk_rsc_needs_unfencing);
	}

	} else {
	const char *orig_value = value;

	if (pcmk_is_set(rsc->flags, pcmk_rsc_fence_device)) {
	value = PCMK__VALUE_QUORUM;

	} else if ((rsc->variant == pcmk_rsc_variant_primitive)
	&& xml_contains_remote_node(rsc->xml)) {
	value = PCMK__VALUE_QUORUM;

	} else if (pcmk_is_set(rsc->cluster->flags,
	pcmk_sched_enable_unfencing)) {
	value = PCMK__VALUE_UNFENCING;

	} else if (pcmk_is_set(rsc->cluster->flags,
	pcmk_sched_fencing_enabled)) {
	value = PCMK__VALUE_FENCING;

	} else if (rsc->cluster->no_quorum_policy == pcmk_no_quorum_ignore) {
	value = PCMK__VALUE_NOTHING;

	} else {
	value = PCMK__VALUE_QUORUM;
	}

	if (orig_value != NULL) {
	pcmk__config_err("Resetting '" XML_RSC_ATTR_REQUIRES "' for %s "
	"to '%s' because '%s' is not valid",
	rsc->id, value, orig_value);
	}
	unpack_requires(rsc, value, true);
	return;
	}

	pe_rsc_trace(rsc, "\tRequired to start: %s%s", value,
	(is_default? " (default)" : ""));
	}

	#ifndef PCMK__COMPAT_2_0
	static void
	warn_about_deprecated_classes(pe_resource_t *rsc)
	{
	const char *std = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS);

	if (pcmk__str_eq(std, PCMK_RESOURCE_CLASS_UPSTART, pcmk__str_none)) {
	pe_warn_once(pcmk__wo_upstart,
	"Support for Upstart resources (such as %s) is deprecated "
	"and will be removed in a future release of Pacemaker",
	rsc->id);

	} else if (pcmk__str_eq(std, PCMK_RESOURCE_CLASS_NAGIOS, pcmk__str_none)) {
	pe_warn_once(pcmk__wo_nagios,
	"Support for Nagios resources (such as %s) is deprecated "
	"and will be removed in a future release of Pacemaker",
	rsc->id);
	}
	}
	#endif

	/*!
	* \internal
	* \brief Unpack configuration XML for a given resource
	*
	* Unpack the XML object containing a resource's configuration into a new
	* \c pe_resource_t object.
	*
	* \param[in] xml_obj XML node containing the resource's configuration
	* \param[out] rsc Where to store the unpacked resource information
	* \param[in] parent Resource's parent, if any
	* \param[in,out] data_set Cluster working set
	*
	* \return Standard Pacemaker return code
	* \note If pcmk_rc_ok is returned, \p *rsc is guaranteed to be non-NULL, and
	* the caller is responsible for freeing it using its variant-specific
	* free() method. Otherwise, \p *rsc is guaranteed to be NULL.
	*/
	int
	pe__unpack_resource(xmlNode xml_obj, pe_resource_t *rsc,
	pe_resource_t parent, pe_working_set_t data_set)
	{
	xmlNode *expanded_xml = NULL;
	xmlNode *ops = NULL;
	const char *value = NULL;
	const char *id = NULL;
	bool guest_node = false;
	bool remote_node = false;

	pe_rule_eval_data_t rule_data = {
	.node_hash = NULL,
	.role = pcmk_role_unknown,
	.now = NULL,
	.match_data = NULL,
	.rsc_data = NULL,
	.op_data = NULL
	};

	CRM_CHECK(rsc != NULL, return EINVAL);
	CRM_CHECK((xml_obj != NULL) && (data_set != NULL),
	*rsc = NULL;
	return EINVAL);

	rule_data.now = data_set->now;

	crm_log_xml_trace(xml_obj, "[raw XML]");

	id = crm_element_value(xml_obj, XML_ATTR_ID);
	if (id == NULL) {
	pe_err("Ignoring <%s> configuration without " XML_ATTR_ID,
	xml_obj->name);
	return pcmk_rc_unpack_error;
	}

	if (unpack_template(xml_obj, &expanded_xml, data_set) == FALSE) {
	return pcmk_rc_unpack_error;
	}

	*rsc = calloc(1, sizeof(pe_resource_t));
	if (*rsc == NULL) {
	crm_crit("Unable to allocate memory for resource '%s'", id);
	return ENOMEM;
	}
	(*rsc)->cluster = data_set;

	if (expanded_xml) {
	crm_log_xml_trace(expanded_xml, "[expanded XML]");
	(*rsc)->xml = expanded_xml;
	(*rsc)->orig_xml = xml_obj;

	} else {
	(*rsc)->xml = xml_obj;
	(*rsc)->orig_xml = NULL;
	}

	/* Do not use xml_obj from here on, use (rsc)->xml in case templates are involved /

	(*rsc)->parent = parent;

	ops = find_xml_node((*rsc)->xml, "operations", FALSE);
	(*rsc)->ops_xml = expand_idref(ops, data_set->input);

	(rsc)->variant = get_resource_type((const char ) (*rsc)->xml->name);
	if ((*rsc)->variant == pcmk_rsc_variant_unknown) {
	pe_err("Ignoring resource '%s' of unknown type '%s'",
	id, (*rsc)->xml->name);
	common_free(*rsc);
	*rsc = NULL;
	return pcmk_rc_unpack_error;
	}

	#ifndef PCMK__COMPAT_2_0
	warn_about_deprecated_classes(*rsc);
	#endif

	(*rsc)->meta = pcmk__strkey_table(free, free);
	(*rsc)->allowed_nodes = pcmk__strkey_table(NULL, free);
	(*rsc)->known_on = pcmk__strkey_table(NULL, free);

	value = crm_element_value((*rsc)->xml, XML_RSC_ATTR_INCARNATION);
	if (value) {
	(*rsc)->id = crm_strdup_printf("%s:%s", id, value);
	add_hash_param((*rsc)->meta, XML_RSC_ATTR_INCARNATION, value);

	} else {
	(*rsc)->id = strdup(id);
	}

	(rsc)->fns = &resource_class_functions[(rsc)->variant];

	get_meta_attributes((rsc)->meta, rsc, NULL, data_set);
	(rsc)->parameters = pe_rsc_params(rsc, NULL, data_set); // \deprecated

	(*rsc)->flags = 0;
	pe__set_resource_flags(*rsc, pcmk_rsc_runnable\|pcmk_rsc_unassigned);

	if (!pcmk_is_set(data_set->flags, pcmk_sched_in_maintenance)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_managed);
	}

	(*rsc)->rsc_cons = NULL;
	(*rsc)->rsc_tickets = NULL;
	(*rsc)->actions = NULL;
	(*rsc)->role = pcmk_role_stopped;
	(*rsc)->next_role = pcmk_role_unknown;

	(*rsc)->recovery_type = pcmk_multiply_active_restart;
	(*rsc)->stickiness = 0;
	(*rsc)->migration_threshold = INFINITY;
	(*rsc)->failure_timeout = 0;

	value = g_hash_table_lookup((*rsc)->meta, XML_CIB_ATTR_PRIORITY);
	(*rsc)->priority = char2score(value);

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_CRITICAL);
	if ((value == NULL) \|\| crm_is_true(value)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_critical);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_NOTIFY);
	if (crm_is_true(value)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_notify);
	}

	if (xml_contains_remote_node((*rsc)->xml)) {
	(*rsc)->is_remote_node = TRUE;
	if (g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_CONTAINER)) {
	guest_node = true;
	} else {
	remote_node = true;
	}
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_OP_ATTR_ALLOW_MIGRATE);
	if (crm_is_true(value)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_migratable);
	} else if ((value == NULL) && remote_node) {
	/* By default, we want remote nodes to be able
	* to float around the cluster without having to stop all the
	* resources within the remote-node before moving. Allowing
	* migration support enables this feature. If this ever causes
	* problems, migration support can be explicitly turned off with
	* allow-migrate=false.
	*/
	pe__set_resource_flags(*rsc, pcmk_rsc_migratable);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MANAGED);
	if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
	if (crm_is_true(value)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_managed);
	} else {
	pe__clear_resource_flags(*rsc, pcmk_rsc_managed);
	}
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MAINTENANCE);
	if (crm_is_true(value)) {
	pe__clear_resource_flags(*rsc, pcmk_rsc_managed);
	pe__set_resource_flags(*rsc, pcmk_rsc_maintenance);
	}
	if (pcmk_is_set(data_set->flags, pcmk_sched_in_maintenance)) {
	pe__clear_resource_flags(*rsc, pcmk_rsc_managed);
	pe__set_resource_flags(*rsc, pcmk_rsc_maintenance);
	}

	if (pe_rsc_is_clone(pe__const_top_resource(*rsc, false))) {
	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_UNIQUE);
	if (crm_is_true(value)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_unique);
	}
	if (detect_promotable(*rsc)) {
	pe__set_resource_flags(*rsc, pcmk_rsc_promotable);
	}
	} else {
	pe__set_resource_flags(*rsc, pcmk_rsc_unique);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_RESTART);
	if (pcmk__str_eq(value, "restart", pcmk__str_casei)) {
	(*rsc)->restart_type = pe_restart_restart;
	pe_rsc_trace((*rsc), "%s dependency restart handling: restart",
	(*rsc)->id);
	pe_warn_once(pcmk__wo_restart_type,
	"Support for restart-type is deprecated and will be removed in a future release");

	} else {
	(*rsc)->restart_type = pe_restart_ignore;
	pe_rsc_trace((*rsc), "%s dependency restart handling: ignore",
	(*rsc)->id);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MULTIPLE);
	if (pcmk__str_eq(value, "stop_only", pcmk__str_casei)) {
	(*rsc)->recovery_type = pcmk_multiply_active_stop;
	pe_rsc_trace((*rsc), "%s multiple running resource recovery: stop only",
	(*rsc)->id);

	} else if (pcmk__str_eq(value, "block", pcmk__str_casei)) {
	(*rsc)->recovery_type = pcmk_multiply_active_block;
	pe_rsc_trace((*rsc), "%s multiple running resource recovery: block",
	(*rsc)->id);

	} else if (pcmk__str_eq(value, "stop_unexpected", pcmk__str_casei)) {
	(*rsc)->recovery_type = pcmk_multiply_active_unexpected;
	pe_rsc_trace((*rsc), "%s multiple running resource recovery: "
	"stop unexpected instances",
	(*rsc)->id);

	} else { // "stop_start"
	if (!pcmk__str_eq(value, "stop_start",
	pcmk__str_casei\|pcmk__str_null_matches)) {
	pe_warn("%s is not a valid value for " XML_RSC_ATTR_MULTIPLE
	", using default of \"stop_start\"", value);
	}
	(*rsc)->recovery_type = pcmk_multiply_active_restart;
	pe_rsc_trace((*rsc), "%s multiple running resource recovery: "
	"stop/start", (*rsc)->id);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_STICKINESS);
	if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
	(*rsc)->stickiness = char2score(value);
	}

	value = g_hash_table_lookup((*rsc)->meta, PCMK_META_MIGRATION_THRESHOLD);
	if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
	(*rsc)->migration_threshold = char2score(value);
	if ((*rsc)->migration_threshold < 0) {
	/* @TODO We use 1 here to preserve previous behavior, but this
	* should probably use the default (INFINITY) or 0 (to disable)
	* instead.
	*/
	pe_warn_once(pcmk__wo_neg_threshold,
	PCMK_META_MIGRATION_THRESHOLD
	" must be non-negative, using 1 instead");
	(*rsc)->migration_threshold = 1;
	}
	}

	if (pcmk__str_eq(crm_element_value((*rsc)->xml, XML_AGENT_ATTR_CLASS),
	PCMK_RESOURCE_CLASS_STONITH, pcmk__str_casei)) {
	pe__set_working_set_flags(data_set, pcmk_sched_have_fencing);
	pe__set_resource_flags(*rsc, pcmk_rsc_fence_device);
	}

	value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_REQUIRES);
	unpack_requires(*rsc, value, false);

	value = g_hash_table_lookup((*rsc)->meta, PCMK_META_FAILURE_TIMEOUT);
	if (value != NULL) {
	// Stored as seconds
	(*rsc)->failure_timeout = (int) (crm_parse_interval_spec(value) / 1000);
	}

	if (remote_node) {
	GHashTable params = pe_rsc_params(rsc, NULL, data_set);

	/* Grabbing the value now means that any rules based on node attributes
	* will evaluate to false, so such rules should not be used with
	* reconnect_interval.
	*
	* @TODO Evaluate per node before using
	*/
	value = g_hash_table_lookup(params, XML_REMOTE_ATTR_RECONNECT_INTERVAL);
	if (value) {
	/* reconnect delay works by setting failure_timeout and preventing the
	* connection from starting until the failure is cleared. */
	(*rsc)->remote_reconnect_ms = crm_parse_interval_spec(value);
	/* we want to override any default failure_timeout in use when remote
	* reconnect_interval is in use. */
	(rsc)->failure_timeout = (rsc)->remote_reconnect_ms / 1000;
	}
	}

	get_target_role(rsc, &((rsc)->next_role));
	pe_rsc_trace((rsc), "%s desired next state: %s", (rsc)->id,
	(rsc)->next_role != pcmk_role_unknown? role2text((rsc)->next_role) : "default");

	if ((rsc)->fns->unpack(rsc, data_set) == FALSE) {
	(rsc)->fns->free(rsc);
	*rsc = NULL;
	return pcmk_rc_unpack_error;
	}

	if (pcmk_is_set(data_set->flags, pcmk_sched_symmetric_cluster)) {
	// This tag must stay exactly the same because it is tested elsewhere
	resource_location(*rsc, NULL, 0, "symmetric_default", data_set);
	} else if (guest_node) {
	/* remote resources tied to a container resource must always be allowed
	* to opt-in to the cluster. Whether the connection resource is actually
	* allowed to be placed on a node is dependent on the container resource */
	resource_location(*rsc, NULL, 0, "remote_connection_default", data_set);
	}

	pe_rsc_trace((rsc), "%s action notification: %s", (rsc)->id,
	pcmk_is_set((*rsc)->flags, pcmk_rsc_notify)? "required" : "not required");

	(*rsc)->utilization = pcmk__strkey_table(free, free);

	pe__unpack_dataset_nvpairs((*rsc)->xml, XML_TAG_UTILIZATION, &rule_data,
	(*rsc)->utilization, NULL, FALSE, data_set);

	if (expanded_xml) {
	if (add_template_rsc(xml_obj, data_set) == FALSE) {
	(rsc)->fns->free(rsc);
	*rsc = NULL;
	return pcmk_rc_unpack_error;
	}
	}
	return pcmk_rc_ok;
	}

	gboolean
	is_parent(pe_resource_t child, pe_resource_t rsc)
	{
	pe_resource_t *parent = child;

	if (parent == NULL \|\| rsc == NULL) {
	return FALSE;
	}
	while (parent->parent != NULL) {
	if (parent->parent == rsc) {
	return TRUE;
	}
	parent = parent->parent;
	}
	return FALSE;
	}

	pe_resource_t *
	uber_parent(pe_resource_t * rsc)
	{
	pe_resource_t *parent = rsc;

	if (parent == NULL) {
	return NULL;
	}
	while ((parent->parent != NULL)
	&& (parent->parent->variant != pcmk_rsc_variant_bundle)) {
	parent = parent->parent;
	}
	return parent;
	}

	/*!
	* \internal
	* \brief Get the topmost parent of a resource as a const pointer
	*
	* \param[in] rsc Resource to check
	* \param[in] include_bundle If true, go all the way to bundle
	*
	* \return \p NULL if \p rsc is NULL, \p rsc if \p rsc has no parent,
	* the bundle if \p rsc is bundled and \p include_bundle is true,
	* otherwise the topmost parent of \p rsc up to a clone
	*/
	const pe_resource_t *
	pe__const_top_resource(const pe_resource_t *rsc, bool include_bundle)
	{
	const pe_resource_t *parent = rsc;

	if (parent == NULL) {
	return NULL;
	}
	while (parent->parent != NULL) {
	if (!include_bundle
	&& (parent->parent->variant == pcmk_rsc_variant_bundle)) {
	break;
	}
	parent = parent->parent;
	}
	return parent;
	}

	void
	common_free(pe_resource_t * rsc)
	{
	if (rsc == NULL) {
	return;
	}

	pe_rsc_trace(rsc, "Freeing %s %d", rsc->id, rsc->variant);

	g_list_free(rsc->rsc_cons);
	g_list_free(rsc->rsc_cons_lhs);
	g_list_free(rsc->rsc_tickets);
	g_list_free(rsc->dangling_migrations);

	if (rsc->parameter_cache != NULL) {
	g_hash_table_destroy(rsc->parameter_cache);
	}
	if (rsc->meta != NULL) {
	g_hash_table_destroy(rsc->meta);
	}
	if (rsc->utilization != NULL) {
	g_hash_table_destroy(rsc->utilization);
	}

	if ((rsc->parent == NULL)
	&& pcmk_is_set(rsc->flags, pcmk_rsc_removed)) {

	free_xml(rsc->xml);
	rsc->xml = NULL;
	free_xml(rsc->orig_xml);
	rsc->orig_xml = NULL;

	/* if rsc->orig_xml, then rsc->xml is an expanded xml from a template */
	} else if (rsc->orig_xml) {
	free_xml(rsc->xml);
	rsc->xml = NULL;
	}
	if (rsc->running_on) {
	g_list_free(rsc->running_on);
	rsc->running_on = NULL;
	}
	if (rsc->known_on) {
	g_hash_table_destroy(rsc->known_on);
	rsc->known_on = NULL;
	}
	if (rsc->actions) {
	g_list_free(rsc->actions);
	rsc->actions = NULL;
	}
	if (rsc->allowed_nodes) {
	g_hash_table_destroy(rsc->allowed_nodes);
	rsc->allowed_nodes = NULL;
	}
	g_list_free(rsc->fillers);
	g_list_free(rsc->rsc_location);
	pe_rsc_trace(rsc, "Resource freed");
	free(rsc->id);
	free(rsc->clone_name);
	free(rsc->allocated_to);
	free(rsc->variant_opaque);
	free(rsc->pending_task);
	free(rsc);
	}

	/*!
	* \internal
	* \brief Count a node and update most preferred to it as appropriate
	*
	* \param[in] rsc An active resource
	* \param[in] node A node that \p rsc is active on
	* \param[in,out] active This will be set to \p node if \p node is more
	* preferred than the current value
	* \param[in,out] count_all If not NULL, this will be incremented
	* \param[in,out] count_clean If not NULL, this will be incremented if \p node
	* is online and clean
	*
	* \return true if the count should continue, or false if sufficiently known
	*/
	bool
	pe__count_active_node(const pe_resource_t rsc, pe_node_t node,
	pe_node_t *active, unsigned int count_all,
	unsigned int *count_clean)
	{
	bool keep_looking = false;
	bool is_happy = false;

	CRM_CHECK((rsc != NULL) && (node != NULL) && (active != NULL),
	return false);

	is_happy = node->details->online && !node->details->unclean;

	if (count_all != NULL) {
	++*count_all;
	}
	if ((count_clean != NULL) && is_happy) {
	++*count_clean;
	}
	if ((count_all != NULL) \|\| (count_clean != NULL)) {
	keep_looking = true; // We're counting, so go through entire list
	}

	if (rsc->partial_migration_source != NULL) {
	if (node->details == rsc->partial_migration_source->details) {
	*active = node; // This is the migration source
	} else {
	keep_looking = true;
	}
	} else if (!pcmk_is_set(rsc->flags, pcmk_rsc_needs_fencing)) {
	if (is_happy && ((active == NULL) \|\| !(active)->details->online
	\|\| (*active)->details->unclean)) {
	*active = node; // This is the first clean node
	} else {
	keep_looking = true;
	}
	}
	if (*active == NULL) {
	*active = node; // This is the first node checked
	}
	return keep_looking;
	}

	// Shared implementation of resource_object_functions_t:active_node()
	static pe_node_t *
	active_node(const pe_resource_t rsc, unsigned int count_all,
	unsigned int *count_clean)
	{
	pe_node_t *active = NULL;

	if (count_all != NULL) {
	*count_all = 0;
	}
	if (count_clean != NULL) {
	*count_clean = 0;
	}
	if (rsc == NULL) {
	return NULL;
	}
	for (GList *iter = rsc->running_on; iter != NULL; iter = iter->next) {
	if (!pe__count_active_node(rsc, (pe_node_t *) iter->data, &active,
	count_all, count_clean)) {
	break; // Don't waste time iterating if we don't have to
	}
	}
	return active;
	}

	/*!
	* \brief
	* \internal Find and count active nodes according to "requires"
	*
	* \param[in] rsc Resource to check
	* \param[out] count If not NULL, will be set to count of active nodes
	*
	* \return An active node (or NULL if resource is not active anywhere)
	*
	* \note This is a convenience wrapper for active_node() where the count of all
	* active nodes or only clean active nodes is desired according to the
	* "requires" meta-attribute.
	*/
	pe_node_t *
	pe__find_active_requires(const pe_resource_t rsc, unsigned int count)
	{
	if (rsc == NULL) {
	if (count != NULL) {
	*count = 0;
	}
	return NULL;

	} else if (pcmk_is_set(rsc->flags, pcmk_rsc_needs_fencing)) {
	return rsc->fns->active_node(rsc, count, NULL);

	} else {
	return rsc->fns->active_node(rsc, NULL, count);
	}
	}

	void
	pe__count_common(pe_resource_t *rsc)
	{
	if (rsc->children != NULL) {
	for (GList *item = rsc->children; item != NULL; item = item->next) {
	((pe_resource_t *) item->data)->fns->count(item->data);
	}

	} else if (!pcmk_is_set(rsc->flags, pcmk_rsc_removed)
	\|\| (rsc->role > pcmk_role_stopped)) {
	rsc->cluster->ninstances++;
	if (pe__resource_is_disabled(rsc)) {
	rsc->cluster->disabled_resources++;
	}
	if (pcmk_is_set(rsc->flags, pcmk_rsc_blocked)) {
	rsc->cluster->blocked_resources++;
	}
	}
	}

	/*!
	* \internal
	* \brief Update a resource's next role
	*
	* \param[in,out] rsc Resource to be updated
	* \param[in] role Resource's new next role
	* \param[in] why Human-friendly reason why role is changing (for logs)
	*/
	void
	pe__set_next_role(pe_resource_t rsc, enum rsc_role_e role, const char why)
	{
	CRM_ASSERT((rsc != NULL) && (why != NULL));
	if (rsc->next_role != role) {
	pe_rsc_trace(rsc, "Resetting next role for %s from %s to %s (%s)",
	rsc->id, role2text(rsc->next_role), role2text(role), why);
	rsc->next_role = role;
	}
	}

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