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clone.c
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/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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 library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <crm/pengine/rules.h>
#include <crm/pengine/status.h>
#include <crm/pengine/internal.h>
#include <unpack.h>
#include <crm/msg_xml.h>
#define VARIANT_CLONE 1
#include "./variant.h"
void clone_create_notifications(resource_t * rsc, action_t * action, action_t * action_complete,
pe_working_set_t * data_set);
void force_non_unique_clone(resource_t * rsc, const char *rid, pe_working_set_t * data_set);
resource_t *create_child_clone(resource_t * rsc, int sub_id, pe_working_set_t * data_set);
static void
mark_as_orphan(resource_t * rsc)
{
GListPtr gIter = rsc->children;
set_bit(rsc->flags, pe_rsc_orphan);
for (; gIter != NULL; gIter = gIter->next) {
resource_t *child = (resource_t *) gIter->data;
mark_as_orphan(child);
}
}
void
force_non_unique_clone(resource_t * rsc, const char *rid, pe_working_set_t * data_set)
{
if (rsc->variant == pe_clone || rsc->variant == pe_master) {
clone_variant_data_t *clone_data = NULL;
get_clone_variant_data(clone_data, rsc);
crm_config_warn("Clones %s contains non-OCF resource %s and so "
"can only be used as an anonymous clone. "
"Set the " XML_RSC_ATTR_UNIQUE " meta attribute to false", rsc->id, rid);
clone_data->clone_node_max = 1;
clone_data->clone_max = g_list_length(data_set->nodes);
clear_bit_recursive(rsc, pe_rsc_unique);
}
}
resource_t *
find_clone_instance(resource_t * rsc, const char *sub_id, pe_working_set_t * data_set)
{
char *child_id = NULL;
resource_t *child = NULL;
const char *child_base = NULL;
clone_variant_data_t *clone_data = NULL;
get_clone_variant_data(clone_data, rsc);
child_base = ID(clone_data->xml_obj_child);
child_id = crm_concat(child_base, sub_id, ':');
child = pe_find_resource(rsc->children, child_id);
free(child_id);
return child;
}
resource_t *
create_child_clone(resource_t * rsc, int sub_id, pe_working_set_t * data_set)
{
gboolean as_orphan = FALSE;
char *inc_num = NULL;
char *inc_max = NULL;
resource_t *child_rsc = NULL;
xmlNode *child_copy = NULL;
clone_variant_data_t *clone_data = NULL;
get_clone_variant_data(clone_data, rsc);
CRM_CHECK(clone_data->xml_obj_child != NULL, return FALSE);
if (sub_id < 0) {
as_orphan = TRUE;
sub_id = clone_data->total_clones;
}
inc_num = crm_itoa(sub_id);
inc_max = crm_itoa(clone_data->clone_max);
child_copy = copy_xml(clone_data->xml_obj_child);
crm_xml_add(child_copy, XML_RSC_ATTR_INCARNATION, inc_num);
if (common_unpack(child_copy, &child_rsc, rsc, data_set) == FALSE) {
pe_err("Failed unpacking resource %s", crm_element_value(child_copy, XML_ATTR_ID));
child_rsc = NULL;
goto bail;
}
/* child_rsc->globally_unique = rsc->globally_unique; */
CRM_ASSERT(child_rsc);
clone_data->total_clones += 1;
pe_rsc_trace(child_rsc, "Setting clone attributes for: %s", child_rsc->id);
rsc->children = g_list_append(rsc->children, child_rsc);
if (as_orphan) {
mark_as_orphan(child_rsc);
}
add_hash_param(child_rsc->meta, XML_RSC_ATTR_INCARNATION_MAX, inc_max);
print_resource(LOG_DEBUG_3, "Added ", child_rsc, FALSE);
bail:
free(inc_num);
free(inc_max);
return child_rsc;
}
gboolean
master_unpack(resource_t * rsc, pe_working_set_t * data_set)
{
const char *master_max = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_MASTER_MAX);
const char *master_node_max = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_MASTER_NODEMAX);
g_hash_table_replace(rsc->meta, strdup("stateful"), strdup(XML_BOOLEAN_TRUE));
if (clone_unpack(rsc, data_set)) {
clone_variant_data_t *clone_data = NULL;
get_clone_variant_data(clone_data, rsc);
clone_data->master_max = crm_parse_int(master_max, "1");
clone_data->master_node_max = crm_parse_int(master_node_max, "1");
return TRUE;
}
return FALSE;
}
gboolean
clone_unpack(resource_t * rsc, pe_working_set_t * data_set)
{
int lpc = 0;
const char *type = NULL;
int num_xml_children = 0;
xmlNode *a_child = NULL;
xmlNode *xml_obj = rsc->xml;
clone_variant_data_t *clone_data = NULL;
const char *ordered = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_ORDERED);
const char *interleave = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_INTERLEAVE);
const char *max_clones = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_INCARNATION_MAX);
const char *max_clones_node = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_INCARNATION_NODEMAX);
pe_rsc_trace(rsc, "Processing resource %s...", rsc->id);
clone_data = calloc(1, sizeof(clone_variant_data_t));
rsc->variant_opaque = clone_data;
clone_data->interleave = FALSE;
clone_data->ordered = FALSE;
clone_data->active_clones = 0;
clone_data->xml_obj_child = NULL;
clone_data->clone_node_max = crm_parse_int(max_clones_node, "1");
if (max_clones) {
clone_data->clone_max = crm_parse_int(max_clones, "1");
} else if (g_list_length(data_set->nodes) > 0) {
clone_data->clone_max = g_list_length(data_set->nodes);
} else {
clone_data->clone_max = 1; /* Handy during crm_verify */
}
if (crm_is_true(interleave)) {
clone_data->interleave = TRUE;
}
if (crm_is_true(ordered)) {
clone_data->ordered = TRUE;
}
if ((rsc->flags & pe_rsc_unique) == 0 && clone_data->clone_node_max > 1) {
crm_config_err("Anonymous clones (%s) may only support one copy per node", rsc->id);
clone_data->clone_node_max = 1;
}
pe_rsc_trace(rsc, "Options for %s", rsc->id);
pe_rsc_trace(rsc, "\tClone max: %d", clone_data->clone_max);
pe_rsc_trace(rsc, "\tClone node max: %d", clone_data->clone_node_max);
pe_rsc_trace(rsc, "\tClone is unique: %s",
is_set(rsc->flags, pe_rsc_unique) ? "true" : "false");
clone_data->xml_obj_child = find_xml_node(xml_obj, XML_CIB_TAG_GROUP, FALSE);
if (clone_data->xml_obj_child == NULL) {
clone_data->xml_obj_child = find_xml_node(xml_obj, XML_CIB_TAG_RESOURCE, TRUE);
for (a_child = __xml_first_child(xml_obj); a_child != NULL; a_child = __xml_next_element(a_child)) {
if (crm_str_eq((const char *)a_child->name, XML_CIB_TAG_RESOURCE, TRUE)) {
num_xml_children++;
}
}
}
if (clone_data->xml_obj_child == NULL) {
crm_config_err("%s has nothing to clone", rsc->id);
return FALSE;
}
for (a_child = __xml_first_child(xml_obj); a_child != NULL; a_child = __xml_next_element(a_child)) {
if (crm_str_eq((const char *)a_child->name, type, TRUE)) {
num_xml_children++;
}
}
if (num_xml_children > 1) {
crm_config_err("%s has too many children. Only the first (%s) will be cloned.",
rsc->id, ID(clone_data->xml_obj_child));
}
/*
* Make clones ever so slightly sticky by default
*
* This helps ensure clone instances are not shuffled around the cluster
* for no benefit in situations when pre-allocation is not appropriate
*/
if (g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_STICKINESS) == NULL) {
add_hash_param(rsc->meta, XML_RSC_ATTR_STICKINESS, "1");
}
pe_rsc_trace(rsc, "\tClone is unique (fixed): %s",
is_set(rsc->flags, pe_rsc_unique) ? "true" : "false");
clone_data->notify_confirm = is_set(rsc->flags, pe_rsc_notify);
add_hash_param(rsc->meta, XML_RSC_ATTR_UNIQUE,
is_set(rsc->flags, pe_rsc_unique) ? XML_BOOLEAN_TRUE : XML_BOOLEAN_FALSE);
for (lpc = 0; lpc < clone_data->clone_max; lpc++) {
if (create_child_clone(rsc, lpc, data_set) == NULL) {
return FALSE;
}
}
if (clone_data->clone_max == 0) {
/* create one so that unpack_find_resource() will hook up
* any orphans up to the parent correctly
*/
if (create_child_clone(rsc, -1, data_set) == NULL) {
return FALSE;
}
}
pe_rsc_trace(rsc, "Added %d children to resource %s...", clone_data->clone_max, rsc->id);
return TRUE;
}
gboolean
clone_active(resource_t * rsc, gboolean all)
{
GListPtr gIter = rsc->children;
for (; gIter != NULL; gIter = gIter->next) {
resource_t *child_rsc = (resource_t *) gIter->data;
gboolean child_active = child_rsc->fns->active(child_rsc, all);
if (all == FALSE && child_active) {
return TRUE;
} else if (all && child_active == FALSE) {
return FALSE;
}
}
if (all) {
return TRUE;
} else {
return FALSE;
}
}
static void
short_print(char *list, const char *prefix, const char *type, long options, void *print_data)
{
if (list) {
if (options & pe_print_html) {
status_print("<li>");
}
status_print("%s%s: [%s ]", prefix, type, list);
if (options & pe_print_html) {
status_print("</li>\n");
} else if (options & pe_print_suppres_nl) {
/* nothing */
} else if ((options & pe_print_printf) || (options & pe_print_ncurses)) {
status_print("\n");
}
}
}
static void
clone_print_xml(resource_t * rsc, const char *pre_text, long options, void *print_data)
{
int is_master_slave = rsc->variant == pe_master ? 1 : 0;
char *child_text = crm_concat(pre_text, " ", ' ');
GListPtr gIter = rsc->children;
status_print("%s<clone ", pre_text);
status_print("id=\"%s\" ", rsc->id);
status_print("multi_state=\"%s\" ", is_master_slave ? "true" : "false");
status_print("unique=\"%s\" ", is_set(rsc->flags, pe_rsc_unique) ? "true" : "false");
status_print("managed=\"%s\" ", is_set(rsc->flags, pe_rsc_managed) ? "true" : "false");
status_print("failed=\"%s\" ", is_set(rsc->flags, pe_rsc_failed) ? "true" : "false");
status_print("failure_ignored=\"%s\" ",
is_set(rsc->flags, pe_rsc_failure_ignored) ? "true" : "false");
status_print(">\n");
for (; gIter != NULL; gIter = gIter->next) {
resource_t *child_rsc = (resource_t *) gIter->data;
child_rsc->fns->print(child_rsc, child_text, options, print_data);
}
status_print("%s</clone>\n", pre_text);
free(child_text);
}
bool is_set_recursive(resource_t * rsc, long long flag, bool any)
{
GListPtr gIter;
bool all = !any;
if(is_set(rsc->flags, flag)) {
if(any) {
return TRUE;
}
} else if(all) {
return FALSE;
}
for (gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
if(is_set_recursive(gIter->data, flag, any)) {
if(any) {
return TRUE;
}
} else if(all) {
return FALSE;
}
}
if(all) {
return TRUE;
}
return FALSE;
}
void
clone_print(resource_t * rsc, const char *pre_text, long options, void *print_data)
{
char *list_text = NULL;
char *child_text = NULL;
char *stopped_list = NULL;
const char *type = "Clone";
GListPtr master_list = NULL;
GListPtr started_list = NULL;
GListPtr gIter = rsc->children;
clone_variant_data_t *clone_data = NULL;
int active_instances = 0;
if (pre_text == NULL) {
pre_text = " ";
}
if (options & pe_print_xml) {
clone_print_xml(rsc, pre_text, options, print_data);
return;
}
get_clone_variant_data(clone_data, rsc);
child_text = crm_concat(pre_text, " ", ' ');
if (rsc->variant == pe_master) {
type = "Master/Slave";
}
status_print("%s%s Set: %s [%s]%s%s",
pre_text ? pre_text : "", type, rsc->id, ID(clone_data->xml_obj_child),
is_set(rsc->flags, pe_rsc_unique) ? " (unique)" : "",
is_set(rsc->flags, pe_rsc_managed) ? "" : " (unmanaged)");
if (options & pe_print_html) {
status_print("\n<ul>\n");
} else if ((options & pe_print_log) == 0) {
status_print("\n");
}
for (; gIter != NULL; gIter = gIter->next) {
gboolean print_full = FALSE;
resource_t *child_rsc = (resource_t *) gIter->data;
if (options & pe_print_clone_details) {
print_full = TRUE;
}
if (child_rsc->fns->active(child_rsc, FALSE) == FALSE) {
/* Inactive clone */
if (is_set(child_rsc->flags, pe_rsc_orphan)) {
continue;
} else if (is_set(rsc->flags, pe_rsc_unique)) {
print_full = TRUE;
} else if (is_not_set(options, pe_print_clone_active)) {
stopped_list = add_list_element(stopped_list, child_rsc->id);
}
} else if (is_set_recursive(child_rsc, pe_rsc_unique, TRUE)
|| is_set_recursive(child_rsc, pe_rsc_orphan, TRUE)
|| is_set_recursive(child_rsc, pe_rsc_managed, FALSE) == FALSE
|| is_set_recursive(child_rsc, pe_rsc_failed, TRUE)) {
/* Unique, unmanaged or failed clone */
print_full = TRUE;
} else if (is_set(options, pe_print_pending) && child_rsc->pending_task != NULL) {
/* In a pending state */
print_full = TRUE;
} else if (child_rsc->fns->active(child_rsc, TRUE)) {
/* Fully active anonymous clone */
node_t *location = child_rsc->fns->location(child_rsc, NULL, TRUE);
if (location) {
enum rsc_role_e a_role = child_rsc->fns->state(child_rsc, TRUE);
if (location->details->online == FALSE && location->details->unclean) {
print_full = TRUE;
} else if (a_role > RSC_ROLE_SLAVE) {
/* And active on a single node as master */
master_list = g_list_append(master_list, location);
} else {
/* And active on a single node as started/slave */
started_list = g_list_append(started_list, location);
}
} else {
/* uncolocated group - bleh */
print_full = TRUE;
}
} else {
/* Partially active anonymous clone */
print_full = TRUE;
}
if (print_full) {
if (options & pe_print_html) {
status_print("<li>\n");
}
child_rsc->fns->print(child_rsc, child_text, options, print_data);
if (options & pe_print_html) {
status_print("</li>\n");
}
}
}
/* Masters */
master_list = g_list_sort(master_list, sort_node_uname);
for (gIter = master_list; gIter; gIter = gIter->next) {
node_t *host = gIter->data;
list_text = add_list_element(list_text, host->details->uname);
active_instances++;
}
short_print(list_text, child_text, "Masters", options, print_data);
g_list_free(master_list);
free(list_text);
list_text = NULL;
/* Started/Slaves */
started_list = g_list_sort(started_list, sort_node_uname);
for (gIter = started_list; gIter; gIter = gIter->next) {
node_t *host = gIter->data;
list_text = add_list_element(list_text, host->details->uname);
active_instances++;
}
short_print(list_text, child_text, rsc->variant == pe_master ? "Slaves" : "Started", options,
print_data);
g_list_free(started_list);
free(list_text);
list_text = NULL;
if (is_not_set(options, pe_print_clone_active)) {
/* Stopped */
if (is_not_set(rsc->flags, pe_rsc_unique)
&& (clone_data->clone_max > active_instances)) {
GListPtr nIter;
GListPtr list = g_hash_table_get_values(rsc->allowed_nodes);
/* Custom stopped list for non-unique clones */
free(stopped_list); stopped_list = NULL;
if (g_list_length(list) == 0) {
/* Clusters with symmetrical=false haven't calculated allowed_nodes yet
* If we've not probed for them yet, the Stopped list will be empty
*/
list = g_hash_table_get_values(rsc->known_on);
}
list = g_list_sort(list, sort_node_uname);
for (nIter = list; nIter != NULL; nIter = nIter->next) {
node_t *node = (node_t *)nIter->data;
if (pe_find_node(rsc->running_on, node->details->uname) == NULL) {
stopped_list = add_list_element(stopped_list, node->details->uname);
}
}
g_list_free(list);
}
short_print(stopped_list, child_text, "Stopped", options, print_data);
free(stopped_list);
}
if (options & pe_print_html) {
status_print("</ul>\n");
}
free(child_text);
}
void
clone_free(resource_t * rsc)
{
GListPtr gIter = rsc->children;
clone_variant_data_t *clone_data = NULL;
get_clone_variant_data(clone_data, rsc);
pe_rsc_trace(rsc, "Freeing %s", rsc->id);
for (; gIter != NULL; gIter = gIter->next) {
resource_t *child_rsc = (resource_t *) gIter->data;
CRM_ASSERT(child_rsc);
pe_rsc_trace(child_rsc, "Freeing child %s", child_rsc->id);
free_xml(child_rsc->xml);
child_rsc->xml = NULL;
/* There could be a saved unexpanded xml */
free_xml(child_rsc->orig_xml);
child_rsc->orig_xml = NULL;
child_rsc->fns->free(child_rsc);
}
g_list_free(rsc->children);
if (clone_data) {
CRM_ASSERT(clone_data->demote_notify == NULL);
CRM_ASSERT(clone_data->stop_notify == NULL);
CRM_ASSERT(clone_data->start_notify == NULL);
CRM_ASSERT(clone_data->promote_notify == NULL);
}
common_free(rsc);
}
enum rsc_role_e
clone_resource_state(const resource_t * rsc, gboolean current)
{
enum rsc_role_e clone_role = RSC_ROLE_UNKNOWN;
GListPtr gIter = rsc->children;
for (; gIter != NULL; gIter = gIter->next) {
resource_t *child_rsc = (resource_t *) gIter->data;
enum rsc_role_e a_role = child_rsc->fns->state(child_rsc, current);
if (a_role > clone_role) {
clone_role = a_role;
}
}
pe_rsc_trace(rsc, "%s role: %s", rsc->id, role2text(clone_role));
return clone_role;
}

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