utils.c
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utils.c
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	/* $Id: utils.c,v 1.11 2006/08/14 09:14:45 andrew Exp $ */
	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This software is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/
	#include <portability.h>
	#include <crm/crm.h>
	#include <crm/cib.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml.h>
	#include <crm/common/util.h>

	#include <glib.h>

	#include <crm/pengine/rules.h>
	#include <utils.h>

	void print_str_str(gpointer key, gpointer value, gpointer user_data);
	gboolean ghash_free_str_str(gpointer key, gpointer value, gpointer user_data);
	void unpack_operation(
	action_t action, crm_data_t xml_obj, pe_working_set_t* data_set);

	void
	pe_free_shallow(GListPtr alist)
	{
	pe_free_shallow_adv(alist, TRUE);
	}

	void
	pe_free_shallow_adv(GListPtr alist, gboolean with_data)
	{
	GListPtr item;
	GListPtr item_next = alist;
	while(item_next != NULL) {
	item = item_next;
	item_next = item_next->next;

	if(with_data) {
	/* crm_debug_5("freeing %p", item->data); */
	crm_free(item->data);
	}

	item->data = NULL;
	item->next = NULL;
	g_list_free(item);
	}
	}

	node_t *
	pe_find_node_id(GListPtr nodes, const char *id)
	{
	unsigned lpc = 0;
	node_t *node = NULL;

	for(lpc = 0; lpc < g_list_length(nodes); lpc++) {
	node = g_list_nth_data(nodes, lpc);
	if(safe_str_eq(node->details->id, id)) {
	return node;
	}
	}
	/* error */
	return NULL;
	}

	node_t *
	node_copy(node_t *this_node)
	{
	node_t *new_node = NULL;

	CRM_CHECK(this_node != NULL, return NULL);
	crm_malloc0(new_node, sizeof(node_t));

	CRM_CHECK(new_node != NULL, return NULL);

	crm_debug_5("Copying %p (%s) to %p",
	this_node, this_node->details->uname, new_node);
	new_node->weight = this_node->weight;
	new_node->fixed = this_node->fixed;
	new_node->details = this_node->details;

	return new_node;
	}

	/* are the contents of list1 and list2 equal
	* nodes with weight < 0 are ignored if filter == TRUE
	*
	* slow but linear
	*
	*/
	gboolean
	node_list_eq(GListPtr list1, GListPtr list2, gboolean filter)
	{
	node_t *other_node;

	GListPtr lhs = list1;
	GListPtr rhs = list2;

	slist_iter(
	node, node_t, lhs, lpc,

	if(node == NULL \|\| (filter && node->weight < 0)) {
	continue;
	}

	other_node = (node_t*)
	pe_find_node_id(rhs, node->details->id);

	if(other_node == NULL \|\| other_node->weight < 0) {
	return FALSE;
	}
	);

	lhs = list2;
	rhs = list1;

	slist_iter(
	node, node_t, lhs, lpc,

	if(node == NULL \|\| (filter && node->weight < 0)) {
	continue;
	}

	other_node = (node_t*)
	pe_find_node_id(rhs, node->details->id);

	if(other_node == NULL \|\| other_node->weight < 0) {
	return FALSE;
	}
	);

	return TRUE;
	}

	/* the intersection of list1 and list2
	*/
	GListPtr
	node_list_and(GListPtr list1, GListPtr list2, gboolean filter)
	{
	GListPtr result = NULL;
	unsigned lpc = 0;

	for(lpc = 0; lpc < g_list_length(list1); lpc++) {
	node_t node = (node_t)g_list_nth_data(list1, lpc);
	node_t *other_node = pe_find_node_id(list2, node->details->id);
	node_t *new_node = NULL;

	if(other_node != NULL) {
	new_node = node_copy(node);
	}

	if(new_node != NULL) {
	crm_debug_4("%s: %d + %d", node->details->uname,
	other_node->weight, new_node->weight);
	new_node->weight = merge_weights(
	new_node->weight, other_node->weight);

	crm_debug_3("New node weight for %s: %d",
	new_node->details->uname, new_node->weight);

	if(filter && new_node->weight < 0) {
	crm_free(new_node);
	new_node = NULL;
	}
	}

	if(new_node != NULL) {
	result = g_list_append(result, new_node);
	}
	}

	return result;
	}


	/* list1 - list2 */
	GListPtr
	node_list_minus(GListPtr list1, GListPtr list2, gboolean filter)
	{
	GListPtr result = NULL;

	slist_iter(
	node, node_t, list1, lpc,
	node_t *other_node = pe_find_node_id(list2, node->details->id);
	node_t *new_node = NULL;

	if(node == NULL \|\| other_node != NULL
	\|\| (filter && node->weight < 0)) {
	continue;

	}
	new_node = node_copy(node);
	result = g_list_append(result, new_node);
	);

	crm_debug_3("Minus result len: %d", g_list_length(result));

	return result;
	}

	/* list1 + list2 - (intersection of list1 and list2) */
	GListPtr
	node_list_xor(GListPtr list1, GListPtr list2, gboolean filter)
	{
	GListPtr result = NULL;

	slist_iter(
	node, node_t, list1, lpc,
	node_t *new_node = NULL;
	node_t other_node = (node_t)
	pe_find_node_id(list2, node->details->id);

	if(node == NULL \|\| other_node != NULL
	\|\| (filter && node->weight < 0)) {
	continue;
	}
	new_node = node_copy(node);
	result = g_list_append(result, new_node);
	);


	slist_iter(
	node, node_t, list2, lpc,
	node_t *new_node = NULL;
	node_t other_node = (node_t)
	pe_find_node_id(list1, node->details->id);

	if(node == NULL \|\| other_node != NULL
	\|\| (filter && node->weight < 0)) {
	continue;
	}
	new_node = node_copy(node);
	result = g_list_append(result, new_node);
	);

	crm_debug_3("Xor result len: %d", g_list_length(result));
	return result;
	}

	GListPtr
	node_list_or(GListPtr list1, GListPtr list2, gboolean filter)
	{
	node_t *other_node = NULL;
	GListPtr result = NULL;
	gboolean needs_filter = FALSE;

	result = node_list_dup(list1, FALSE, filter);

	slist_iter(
	node, node_t, list2, lpc,

	if(node == NULL) {
	continue;
	}

	other_node = (node_t*)pe_find_node_id(
	result, node->details->id);

	if(other_node != NULL) {
	crm_debug_4("%s + %s: %d + %d",
	node->details->uname,
	other_node->details->uname,
	node->weight, other_node->weight);
	other_node->weight = merge_weights(
	other_node->weight, node->weight);

	if(filter && node->weight < 0) {
	needs_filter = TRUE;
	}

	} else if(filter == FALSE \|\| node->weight >= 0) {
	node_t *new_node = node_copy(node);
	result = g_list_append(result, new_node);
	}
	);

	/* not the neatest way, but the most expedient for now */
	if(filter && needs_filter) {
	GListPtr old_result = result;
	result = node_list_dup(old_result, FALSE, filter);
	pe_free_shallow_adv(old_result, TRUE);
	}


	return result;
	}

	GListPtr
	node_list_dup(GListPtr list1, gboolean reset, gboolean filter)
	{
	GListPtr result = NULL;

	slist_iter(
	this_node, node_t, list1, lpc,
	node_t *new_node = NULL;
	if(filter && this_node->weight < 0) {
	continue;
	}

	new_node = node_copy(this_node);
	if(reset) {
	new_node->weight = 0;
	}
	if(new_node != NULL) {
	result = g_list_append(result, new_node);
	}
	);

	return result;
	}


	gint sort_rsc_priority(gconstpointer a, gconstpointer b)
	{
	const resource_t resource1 = (const resource_t)a;
	const resource_t resource2 = (const resource_t)b;

	if(a == NULL && b == NULL) { return 0; }
	if(a == NULL) { return 1; }
	if(b == NULL) { return -1; }

	if(resource1->priority > resource2->priority) {
	return -1;
	}

	if(resource1->priority < resource2->priority) {
	return 1;
	}

	return 0;
	}

	action_t *
	custom_action(resource_t rsc, char key, const char *task,
	node_t *on_node, gboolean optional, gboolean save_action,
	pe_working_set_t *data_set)
	{
	action_t *action = NULL;
	GListPtr possible_matches = NULL;
	CRM_CHECK(key != NULL, return NULL);
	CRM_CHECK(task != NULL, return NULL);

	if(save_action && rsc != NULL) {
	possible_matches = find_actions(rsc->actions, key, on_node);
	}

	if(possible_matches != NULL) {
	crm_free(key);

	if(g_list_length(possible_matches) > 1) {
	pe_warn("Action %s for %s on %s exists %d times",
	task, rsc?rsc->id:"<NULL>",
	on_node?on_node->details->uname:"<NULL>",
	g_list_length(possible_matches));
	}

	action = g_list_nth_data(possible_matches, 0);
	crm_debug_4("Found existing action (%d) %s for %s on %s",
	action->id, task, rsc?rsc->id:"<NULL>",
	on_node?on_node->details->uname:"<NULL>");
	}

	if(action == NULL) {
	if(save_action) {
	crm_debug_2("Creating%s action %d: %s for %s on %s",
	optional?"":" manditory", data_set->action_id, key, rsc?rsc->id:"<NULL>",
	on_node?on_node->details->uname:"<NULL>");
	}

	crm_malloc0(action, sizeof(action_t));
	if(action != NULL) {
	if(save_action) {
	action->id = data_set->action_id++;
	} else {
	action->id = 0;
	}
	action->rsc = rsc;
	action->task = task;
	action->node = on_node;

	action->actions_before = NULL;
	action->actions_after = NULL;
	action->failure_is_fatal = TRUE;

	action->pseudo = FALSE;
	action->dumped = FALSE;
	action->runnable = TRUE;
	action->processed = FALSE;
	action->optional = optional;
	action->seen_count = 0;

	action->extra = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	action->meta = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	if(save_action) {
	data_set->actions = g_list_append(
	data_set->actions, action);
	}

	action->uuid = key;

	if(rsc != NULL) {
	action->op_entry = find_rsc_op_entry(rsc, key);

	unpack_operation(
	action, action->op_entry, data_set);

	if(save_action) {
	rsc->actions = g_list_append(
	rsc->actions, action);
	}
	}
	if(save_action) {
	crm_debug_4("Action %d created", action->id);
	}
	}
	}

	if(optional == FALSE && action->optional) {
	crm_debug_2("Action %d (%s) marked manditory",
	action->id, action->uuid);
	action->optional = FALSE;
	}

	if(rsc != NULL) {
	enum action_tasks a_task = text2task(action->task);
	int warn_level = LOG_DEBUG_3;
	if(save_action) {
	warn_level = LOG_WARNING;
	}

	if(action->node != NULL && action->op_entry != NULL) {
	unpack_instance_attributes(
	action->op_entry, XML_TAG_ATTR_SETS,
	action->node->details->attrs,
	action->extra, NULL, data_set->now);
	}

	if(action->node == NULL) {
	action->runnable = FALSE;

	} else if(rsc->is_managed == FALSE) {
	crm_log_maybe(warn_level, "Action %s %s is for %s (unmanaged)",
	action->uuid, task, rsc->id);
	action->optional = TRUE;
	/* action->runnable = FALSE; */

	#if 0
	} else if(action->node->details->unclean) {
	crm_log_maybe(warn_level, "Action %s on %s is unrunnable (unclean)",
	action->uuid, action->node?action->node->details->uname:"<none>");

	action->runnable = FALSE;
	#endif
	} else if(action->node->details->online == FALSE) {
	action->runnable = FALSE;
	crm_log_maybe(warn_level, "Action %s on %s is unrunnable (offline)",
	action->uuid, action->node->details->uname);
	if(action->rsc->is_managed
	&& save_action
	&& a_task == stop_rsc) {
	crm_log_maybe(warn_level, "Marking node %s unclean",
	action->node->details->uname);
	action->node->details->unclean = TRUE;
	}

	} else if(action->needs == rsc_req_nothing) {
	crm_debug_3("Action %s doesnt require anything",
	action->uuid);
	action->runnable = TRUE;
	#if 0
	/*
	* No point checking this
	* - if we dont have quorum we cant stonith anyway
	*/
	} else if(action->needs == rsc_req_stonith) {
	crm_debug_3("Action %s requires only stonith", action->uuid);
	action->runnable = TRUE;
	#endif
	} else if(data_set->have_quorum == FALSE
	&& data_set->no_quorum_policy == no_quorum_stop) {
	action->runnable = FALSE;
	crm_debug("%s\t%s %s (cancelled : quorum)",
	action->node->details->uname,
	action->task, rsc->id);

	} else if(data_set->have_quorum == FALSE
	&& data_set->no_quorum_policy == no_quorum_freeze) {
	crm_debug_3("Check resource is already active");
	if(rsc->fns->active(rsc, TRUE) == FALSE) {
	action->runnable = FALSE;
	crm_debug("%s\t%s %s (cancelled : quorum freeze)",
	action->node->details->uname,
	action->task, rsc->id);
	}

	} else {
	crm_debug_3("Action %s is runnable", action->uuid);
	action->runnable = TRUE;
	}

	if(save_action) {
	switch(a_task) {
	case stop_rsc:
	rsc->stopping = TRUE;
	break;
	case start_rsc:
	rsc->starting = FALSE;
	if(action->runnable) {
	rsc->starting = TRUE;
	}
	break;
	default:
	break;
	}
	}
	}
	return action;
	}

	void
	unpack_operation(
	action_t action, crm_data_t xml_obj, pe_working_set_t* data_set)
	{
	int lpc = 0;
	const char *class = NULL;
	const char *value = NULL;
	const char *fields[] = {
	XML_LRM_ATTR_INTERVAL,
	"timeout",
	"start_delay",
	};

	CRM_CHECK(action->rsc != NULL, return);

	if(xml_obj != NULL) {
	value = crm_element_value(xml_obj, "prereq");
	}
	if(value == NULL && safe_str_eq(action->task, CRMD_ACTION_START)) {
	value = g_hash_table_lookup(
	action->rsc->meta, "start_prereq");
	}

	if(value == NULL && safe_str_neq(action->task, CRMD_ACTION_START)) {
	/* todo: integrate stop as an option? */
	action->needs = rsc_req_nothing;
	value = "nothing (default)";

	} else if(safe_str_eq(value, "nothing")) {
	action->needs = rsc_req_nothing;

	} else if(safe_str_eq(value, "quorum")) {
	action->needs = rsc_req_quorum;

	} else if(safe_str_eq(value, "fencing")) {
	action->needs = rsc_req_stonith;

	} else if(data_set->no_quorum_policy == no_quorum_ignore) {
	action->needs = rsc_req_nothing;
	value = "nothing (default)";

	} else if(data_set->no_quorum_policy == no_quorum_freeze
	&& data_set->stonith_enabled) {
	action->needs = rsc_req_stonith;
	value = "fencing (default)";

	} else {
	action->needs = rsc_req_quorum;
	value = "quorum (default)";
	}

	class = g_hash_table_lookup(action->rsc->meta, "class");
	if(safe_str_eq(class, "stonith")) {
	if(action->needs == rsc_req_stonith) {
	crm_config_err("Stonith resources (eg. %s) cannot require"
	" fencing to start", action->rsc->id);
	}
	action->needs = rsc_req_nothing;
	value = "nothing (fencing override)";
	}
	crm_debug_3("\tAction %s requires: %s", action->task, value);

	value = NULL;
	if(xml_obj != NULL) {
	value = crm_element_value(xml_obj, "on_fail");
	}
	if(value == NULL && safe_str_eq(action->task, CRMD_ACTION_STOP)) {
	value = g_hash_table_lookup(
	action->rsc->meta, "on_stopfail");
	if(value != NULL) {
	#if CRM_DEPRECATED_SINCE_2_0_2
	crm_config_err("The \"on_stopfail\" attribute used in"
	" %s has been deprecated since 2.0.2",
	action->rsc->id);
	#else
	crm_config_err("The \"on_stopfail\" attribute used in"
	" %s has been deprecated since 2.0.2"
	" and is now disabled", action->rsc->id);
	value = NULL;
	#endif
	crm_config_err("Please use specify the \"on_fail\""
	" attribute on the \"stop\" operation"
	" instead");
	}
	}
	if(value == NULL) {

	} else if(safe_str_eq(value, "block")) {
	action->on_fail = action_fail_block;

	} else if(safe_str_eq(value, "fence")) {
	action->on_fail = action_fail_fence;
	value = "node fencing";

	} else if(safe_str_eq(value, "ignore")) {
	action->on_fail = action_fail_ignore;
	value = "ignore";

	} else if(safe_str_eq(value, "migrate")) {
	action->on_fail = action_fail_migrate;
	value = "force migration";

	} else if(safe_str_eq(value, "stop")) {
	action->fail_role = RSC_ROLE_STOPPED;
	value = "stop resource";

	} else if(safe_str_eq(value, "restart")
	\|\| safe_str_eq(value, "nothing")) {
	action->on_fail = action_fail_recover;
	value = "restart (and possibly migrate)";

	} else {
	pe_err("Resource %s: Unknown failure type (%s)",
	action->rsc->id, value);
	value = NULL;
	}

	/* defaults */
	if(value == NULL && safe_str_eq(action->task, CRMD_ACTION_STOP)) {
	if(data_set->stonith_enabled) {
	action->on_fail = action_fail_fence;
	value = "resource fence (default)";

	} else {
	action->on_fail = action_fail_block;
	value = "resource block (default)";
	}

	} else if(value == NULL) {
	action->on_fail = action_fail_recover;
	value = "restart (and possibly migrate) (default)";
	}

	crm_debug_3("\t%s failure handling: %s", action->task, value);

	value = NULL;
	if(xml_obj != NULL) {
	value = crm_element_value(xml_obj, "role_after_failure");
	}
	if(value != NULL && action->fail_role == RSC_ROLE_UNKNOWN) {
	action->fail_role = text2role(value);
	}
	/* defaults */
	if(action->fail_role == RSC_ROLE_UNKNOWN) {
	if(safe_str_eq(action->task, CRMD_ACTION_PROMOTE)) {
	action->fail_role = RSC_ROLE_SLAVE;
	} else {
	action->fail_role = RSC_ROLE_STARTED;
	}
	}
	crm_debug_3("\t%s failure results in: %s",
	action->task, role2text(action->fail_role));

	if(xml_obj != NULL) {
	xml_prop_iter(xml_obj, p_name, p_value,
	if(p_value != NULL) {
	g_hash_table_insert(action->meta, crm_strdup(p_name),
	crm_strdup(p_value));
	}
	);

	unpack_instance_attributes(xml_obj, XML_TAG_META_SETS,
	NULL, action->meta, NULL, data_set->now);

	unpack_instance_attributes(xml_obj, XML_TAG_ATTR_SETS,
	NULL, action->meta, NULL, data_set->now);
	}

	if(g_hash_table_lookup(action->meta, "timeout") == NULL) {
	g_hash_table_insert(
	action->meta, crm_strdup("timeout"),
	crm_strdup(pe_pref(data_set->config_hash, "default-action-timeout")));
	}

	for(;lpc < DIMOF(fields); lpc++) {
	value = g_hash_table_lookup(action->meta, fields[lpc]);
	if(value != NULL) {
	char *tmp_ms = NULL;
	int tmp_i = crm_get_msec(value);
	if(tmp_i < 0) {
	tmp_i = 0;
	}
	tmp_ms = crm_itoa(tmp_i);
	g_hash_table_replace(
	action->meta, crm_strdup(fields[lpc]), tmp_ms);
	}
	}
	}

	crm_data_t *
	find_rsc_op_entry(resource_t rsc, const char key)
	{
	const char *name = NULL;
	const char *value = NULL;
	const char *interval = NULL;
	char *match_key = NULL;
	crm_data_t *op = NULL;

	xml_child_iter_filter(
	rsc->ops_xml, operation, "op",

	name = crm_element_value(operation, "name");
	interval = crm_element_value(operation, XML_LRM_ATTR_INTERVAL);
	value = crm_element_value(operation, "disabled");
	if(crm_is_true(value)) {
	crm_debug_2("%s disabled", ID(operation));
	continue;
	}

	match_key = generate_op_key(
	rsc->id, name, crm_get_msec(interval));

	if(safe_str_eq(key, match_key)) {
	op = operation;
	}
	crm_free(match_key);

	if(op != NULL) {
	return op;
	}
	);
	crm_debug_3("No match for %s", key);
	return op;
	}

	void
	print_node(const char pre_text, node_t node, gboolean details)
	{
	if(node == NULL) {
	crm_debug_4("%s%s: <NULL>",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ");
	return;
	}

	crm_debug_4("%s%s%sNode %s: (weight=%d, fixed=%s)",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ",
	node->details==NULL?"error ":node->details->online?"":"Unavailable/Unclean ",
	node->details->uname,
	node->weight,
	node->fixed?"True":"False");

	if(details && node != NULL && node->details != NULL) {
	char *pe_mutable = crm_strdup("\t\t");
	crm_debug_4("\t\t===Node Attributes");
	g_hash_table_foreach(node->details->attrs,
	print_str_str, pe_mutable);
	crm_free(pe_mutable);

	crm_debug_4("\t\t=== Resources");
	slist_iter(
	rsc, resource_t, node->details->running_rsc, lpc,
	print_resource(LOG_DEBUG_4, "\t\t", rsc, FALSE);
	);
	}
	}

	/*
	* Used by the HashTable for-loop
	*/
	void print_str_str(gpointer key, gpointer value, gpointer user_data)
	{
	crm_debug_4("%s%s %s ==> %s",
	user_data==NULL?"":(char*)user_data,
	user_data==NULL?"":": ",
	(char*)key,
	(char*)value);
	}

	void
	print_resource(
	int log_level, const char pre_text, resource_t rsc, gboolean details)
	{
	long options = pe_print_log;

	if(rsc == NULL) {
	crm_log_maybe(log_level-1, "%s%s: <NULL>",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ");
	return;
	}
	if(details) {
	options \|= pe_print_details;
	}
	rsc->fns->print(rsc, pre_text, options, &log_level);
	}

	void
	log_action(unsigned int log_level, const char pre_text, action_t action, gboolean details)
	{
	const char *node_uname = NULL;
	const char *node_uuid = NULL;

	if(action == NULL) {

	crm_log_maybe(log_level, "%s%s: <NULL>",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ");
	return;
	}


	if(action->pseudo) {
	node_uname = NULL;
	node_uuid = NULL;

	} else if(action->node != NULL) {
	node_uname = action->node->details->uname;
	node_uuid = action->node->details->id;
	} else {
	node_uname = "<none>";
	node_uuid = NULL;
	}

	switch(text2task(action->task)) {
	case stonith_node:
	case shutdown_crm:
	crm_log_maybe(log_level,
	"%s%s%sAction %d: %s%s%s%s%s%s",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ",
	action->pseudo?"Pseduo ":action->optional?"Optional ":action->runnable?action->processed?"":"(Provisional) ":"!!Non-Startable!! ",
	action->id, action->uuid,
	node_uname?"\ton ":"",
	node_uname?node_uname:"",
	node_uuid?"\t\t(":"",
	node_uuid?node_uuid:"",
	node_uuid?")":"");
	break;
	default:
	crm_log_maybe(log_level,
	"%s%s%sAction %d: %s %s%s%s%s%s%s",
	pre_text==NULL?"":pre_text,
	pre_text==NULL?"":": ",
	action->optional?"Optional ":action->pseudo?"Pseduo ":action->runnable?action->processed?"":"(Provisional) ":"!!Non-Startable!! ",
	action->id, action->uuid,
	safe_val3("<none>", action, rsc, id),
	node_uname?"\ton ":"",
	node_uname?node_uname:"",
	node_uuid?"\t\t(":"",
	node_uuid?node_uuid:"",
	node_uuid?")":"");

	break;
	}

	if(details) {
	crm_log_maybe(log_level+1, "\t\t====== Preceeding Actions");
	slist_iter(
	other, action_wrapper_t, action->actions_before, lpc,
	log_action(log_level+1, "\t\t", other->action, FALSE);
	);
	#if 1
	crm_log_maybe(log_level+1, "\t\t====== Subsequent Actions");
	slist_iter(
	other, action_wrapper_t, action->actions_after, lpc,
	log_action(log_level+1, "\t\t", other->action, FALSE);
	);
	#endif
	crm_log_maybe(log_level+1, "\t\t====== End");

	} else {
	crm_log_maybe(log_level, "\t\t(seen=%d, before=%d, after=%d)",
	action->seen_count,
	g_list_length(action->actions_before),
	g_list_length(action->actions_after));
	}
	}


	void
	pe_free_action(action_t *action)
	{
	if(action == NULL) {
	return;
	}
	pe_free_shallow(action->actions_before);/* action_warpper_t* */
	pe_free_shallow(action->actions_after); /* action_warpper_t* */
	g_hash_table_destroy(action->extra);
	g_hash_table_destroy(action->meta);
	crm_free(action->uuid);
	crm_free(action);
	}

	GListPtr
	find_recurring_actions(GListPtr input, node_t *not_on_node)
	{
	const char *value = NULL;
	GListPtr result = NULL;
	CRM_CHECK(input != NULL, return NULL);

	slist_iter(
	action, action_t, input, lpc,
	value = g_hash_table_lookup(action->meta, XML_LRM_ATTR_INTERVAL);
	if(value == NULL) {
	/* skip */
	} else if(safe_str_eq(value, "0")) {
	/* skip */
	} else if(safe_str_eq(CRMD_ACTION_CANCEL, action->task)) {
	/* skip */
	} else if(not_on_node == NULL) {
	crm_debug_5("(null) Found: %s", action->uuid);
	result = g_list_append(result, action);

	} else if(action->node == NULL) {
	/* skip */
	} else if(action->node->details != not_on_node->details) {
	crm_debug_5("Found: %s", action->uuid);
	result = g_list_append(result, action);
	}
	);

	return result;
	}

	GListPtr
	find_actions(GListPtr input, const char key, node_t on_node)
	{
	GListPtr result = NULL;
	CRM_CHECK(key != NULL, return NULL);

	slist_iter(
	action, action_t, input, lpc,
	crm_debug_5("Matching %s against %s", key, action->uuid);
	if(safe_str_neq(key, action->uuid)) {
	continue;

	} else if(on_node == NULL) {
	result = g_list_append(result, action);

	} else if(action->node == NULL) {
	/* skip */
	crm_debug_2("While looking for %s action on %s, "
	"found an unallocated one. Assigning"
	" it to the requested node...",
	key, on_node->details->uname);

	action->node = on_node;
	result = g_list_append(result, action);

	} else if(safe_str_eq(on_node->details->id,
	action->node->details->id)) {
	result = g_list_append(result, action);
	}
	);

	return result;
	}


	GListPtr
	find_actions_exact(GListPtr input, const char key, node_t on_node)
	{
	GListPtr result = NULL;
	CRM_CHECK(key != NULL, return NULL);

	slist_iter(
	action, action_t, input, lpc,
	crm_debug_5("Matching %s against %s", key, action->uuid);
	if(safe_str_neq(key, action->uuid)) {
	crm_debug_3("Key mismatch: %s vs. %s",
	key, action->uuid);
	continue;

	} else if(on_node == NULL \|\| action->node == NULL) {
	crm_debug_3("on_node=%p, action->node=%p",
	on_node, action->node);
	continue;

	} else if(safe_str_eq(on_node->details->id,
	action->node->details->id)) {
	result = g_list_append(result, action);
	}
	crm_debug_2("Node mismatch: %s vs. %s",
	on_node->details->id, action->node->details->id);
	);

	return result;
	}

	void
	set_id(crm_data_t * xml_obj, const char *prefix, int child)
	{
	int id_len = 0;
	gboolean use_prefix = TRUE;
	gboolean use_child = TRUE;

	char *new_id = NULL;
	const char *id = crm_element_value(xml_obj, XML_ATTR_ID);

	id_len = 1 + strlen(id);

	if(child > 999) {
	pe_err("Are you insane?!?"
	" The CRM does not support > 1000 children per resource");
	return;

	} else if(child < 0) {
	use_child = FALSE;

	} else {
	id_len += 4; /* child */
	}

	if(prefix == NULL \|\| safe_str_eq(id, prefix)) {
	use_prefix = FALSE;
	} else {
	id_len += (1 + strlen(prefix));
	}

	crm_malloc0(new_id, id_len);

	if(use_child) {
	snprintf(new_id, id_len, "%s%s%s:%d",
	use_prefix?prefix:"", use_prefix?":":"", id, child);
	} else {
	snprintf(new_id, id_len, "%s%s%s",
	use_prefix?prefix:"", use_prefix?":":"", id);
	}

	crm_xml_add(xml_obj, XML_ATTR_ID, new_id);
	crm_free(new_id);
	}

	static void
	resource_node_score(resource_t rsc, node_t node, int score, const char *tag)
	{
	node_t *match = NULL;
	crm_debug_2("Setting %s for %s on %s: %d",
	tag, rsc->id, node->details->uname, score);
	match = pe_find_node_id(rsc->allowed_nodes, node->details->id);
	if(match == NULL) {
	match = node_copy(node);
	match->weight = 0;
	rsc->allowed_nodes = g_list_append(rsc->allowed_nodes, match);
	}
	match->weight = merge_weights(match->weight, score);
	}

	void
	resource_location(resource_t rsc, node_t node, int score, const char *tag,
	pe_working_set_t *data_set)
	{
	CRM_CHECK(rsc->variant == pe_native, return);

	if(node != NULL) {
	resource_node_score(rsc, node, score, tag);

	} else if(data_set != NULL) {
	slist_iter(
	node, node_t, data_set->nodes, lpc,
	resource_node_score(rsc, node, score, tag);
	);
	} else {
	slist_iter(
	node, node_t, rsc->allowed_nodes, lpc,
	resource_node_score(rsc, node, score, tag);
	);
	}

	if(node == NULL && score == -INFINITY) {
	if(rsc->allocated_to) {
	crm_info("Deallocating %s from %s", rsc->id, rsc->allocated_to->details->uname);
	crm_free(rsc->allocated_to);
	rsc->allocated_to = NULL;
	}
	}
	}

	void
	order_actions(
	action_t lh_action, action_t rh_action, enum pe_ordering order)
	{
	action_wrapper_t *wrapper = NULL;
	GListPtr list = NULL;

	crm_debug_2("Ordering Action %s before %s",
	lh_action->uuid, rh_action->uuid);

	log_action(LOG_DEBUG_4, "LH (order_actions)", lh_action, FALSE);
	log_action(LOG_DEBUG_4, "RH (order_actions)", rh_action, FALSE);


	crm_malloc0(wrapper, sizeof(action_wrapper_t));
	if(wrapper != NULL) {
	wrapper->action = rh_action;
	wrapper->type = order;

	list = lh_action->actions_after;
	list = g_list_append(list, wrapper);
	lh_action->actions_after = list;
	wrapper = NULL;
	}
	if(order != pe_ordering_recover) {
	crm_malloc0(wrapper, sizeof(action_wrapper_t));
	if(wrapper != NULL) {
	wrapper->action = lh_action;
	wrapper->type = order;
	list = rh_action->actions_before;
	list = g_list_append(list, wrapper);
	rh_action->actions_before = list;
	}
	}
	}

	const char *
	get_interval(crm_data_t *xml_op)
	{
	const char *interval_s = NULL;
	interval_s = crm_element_value(xml_op, XML_LRM_ATTR_INTERVAL);
	#if CRM_DEPRECATED_SINCE_2_0_4
	if(interval_s == NULL) {
	crm_data_t *params = NULL;
	params = find_xml_node(xml_op, XML_TAG_PARAMS, FALSE);
	if(params != NULL) {
	interval_s = crm_element_value(
	params, XML_LRM_ATTR_INTERVAL);
	}
	}
	#endif

	CRM_CHECK(interval_s != NULL,
	crm_err("Invalid rsc op: %s", ID(xml_op)); return "0");

	return interval_s;
	}

	#define sort_return(an_int) crm_free(a_uuid); crm_free(b_uuid); return an_int

	gint
	sort_op_by_callid(gconstpointer a, gconstpointer b)
	{
	char *a_uuid = NULL;
	char *b_uuid = NULL;
	const char *a_task_id = cl_get_string(a, XML_LRM_ATTR_CALLID);
	const char *b_task_id = cl_get_string(b, XML_LRM_ATTR_CALLID);

	const char *a_key = cl_get_string(a, XML_ATTR_TRANSITION_MAGIC);
	const char *b_key = cl_get_string(b, XML_ATTR_TRANSITION_MAGIC);

	const char *a_xml_id = ID(a);
	const char *b_xml_id = ID(b);

	int a_id = -1;
	int b_id = -1;

	int a_rc = -1;
	int b_rc = -1;

	int a_status = -1;
	int b_status = -1;

	int a_call_id = -1;
	int b_call_id = -1;

	if(safe_str_eq(a_xml_id, b_xml_id)) {
	/* We have duplicate lrm_rsc_op entries in the status
	* section which is unliklely to be a good thing
	* - we can handle it easily enough, but we need to get
	* to the bottom of why its happening.
	*/
	pe_err("Duplicate lrm_rsc_op entries named %s", a_xml_id);
	sort_return(0);
	}

	CRM_CHECK(a_task_id != NULL && b_task_id != NULL, sort_return(0));
	a_call_id = crm_parse_int(a_task_id, NULL);
	b_call_id = crm_parse_int(b_task_id, NULL);

	if(a_call_id == -1 && b_call_id == -1) {
	/* both are pending ops so it doesnt matter since
	* stops are never pending
	*/
	sort_return(0);

	} else if(a_call_id >= 0 && a_call_id < b_call_id) {
	crm_debug_4("%s (%d) < %s (%d) : call id",
	ID(a), a_call_id, ID(b), b_call_id);
	sort_return(-1);

	} else if(b_call_id >= 0 && a_call_id > b_call_id) {
	crm_debug_4("%s (%d) > %s (%d) : call id",
	ID(a), a_call_id, ID(b), b_call_id);
	sort_return(1);
	}

	crm_debug_5("%s (%d) == %s (%d) : continuing",
	ID(a), a_call_id, ID(b), b_call_id);

	/* now process pending ops */
	CRM_CHECK(a_key != NULL && b_key != NULL, sort_return(0));
	CRM_CHECK(decode_transition_magic(
	a_key,&a_uuid,&a_id,&a_status, &a_rc), sort_return(0));
	CRM_CHECK(decode_transition_magic(
	b_key,&b_uuid,&b_id,&b_status, &b_rc), sort_return(0));

	/* try and determin the relative age of the operation...
	* some pending operations (ie. a start) may have been supuerceeded
	* by a subsequent stop
	*
	* [a\|b]_id == -1 means its a shutdown operation and _always_ comes last
	*/
	if(safe_str_neq(a_uuid, b_uuid) \|\| a_id == b_id) {
	/*
	* some of the logic in here may be redundant...
	*
	* if the UUID from the TE doesnt match then one better
	* be a pending operation.
	* pending operations dont survive between elections and joins
	* because we query the LRM directly
	*/

	CRM_CHECK(a_call_id == -1 \|\| b_call_id == -1, sort_return(0));
	CRM_CHECK(a_call_id >= 0 \|\| b_call_id >= 0, sort_return(0));

	if(b_call_id == -1) {
	crm_debug_2("%s (%d) < %s (%d) : transition + call id",
	ID(a), a_call_id, ID(b), b_call_id);
	sort_return(-1);
	}

	if(a_call_id == -1) {
	crm_debug_2("%s (%d) > %s (%d) : transition + call id",
	ID(a), a_call_id, ID(b), b_call_id);
	sort_return(1);
	}

	} else if((a_id >= 0 && a_id < b_id) \|\| b_id == -1) {
	crm_debug_3("%s (%d) < %s (%d) : transition",
	ID(a), a_id, ID(b), b_id);
	sort_return(-1);

	} else if((b_id >= 0 && a_id > b_id) \|\| a_id == -1) {
	crm_debug_3("%s (%d) > %s (%d) : transition",
	ID(a), a_id, ID(b), b_id);
	sort_return(1);
	}

	/* we should never end up here */
	crm_err("%s (%d:%d:%s) ?? %s (%d:%d:%s) : default",
	ID(a), a_call_id, a_id, a_uuid, ID(b), b_call_id, b_id, b_uuid);
	CRM_CHECK(FALSE, sort_return(0));
	}

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