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group.c
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/*
* 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 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/status.h>
#include <crm/pengine/internal.h>
#include <crm/msg_xml.h>
#include <crm/common/output.h>
#include <crm/common/strings_internal.h>
#include <crm/common/xml_internal.h>
#include <pe_status_private.h>
#define VARIANT_GROUP 1
#include "./variant.h"
static int
inactive_resources(pe_resource_t *rsc)
{
int retval = 0;
for (GList *gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
if (!child_rsc->fns->active(child_rsc, TRUE)) {
retval++;
}
}
return retval;
}
static void
group_header(pcmk__output_t *out, int *rc, pe_resource_t *rsc, int n_inactive, bool show_inactive)
{
char *attrs = NULL;
size_t len = 0;
if (n_inactive > 0 && !show_inactive) {
char *word = crm_strdup_printf("%d member%s inactive", n_inactive, pcmk__plural_s(n_inactive));
pcmk__add_separated_word(&attrs, &len, word, ", ");
free(word);
}
if (!pcmk_is_set(rsc->flags, pe_rsc_managed)) {
pcmk__add_separated_word(&attrs, &len, "unmanaged", ", ");
}
if (pe__resource_is_disabled(rsc)) {
pcmk__add_separated_word(&attrs, &len, "disabled", ", ");
}
if (attrs) {
PCMK__OUTPUT_LIST_HEADER(out, FALSE, *rc, "Resource Group: %s (%s)",
rsc->id, attrs);
free(attrs);
} else {
PCMK__OUTPUT_LIST_HEADER(out, FALSE, *rc, "Resource Group: %s", rsc->id);
}
}
static bool
skip_child_rsc(pe_resource_t *rsc, pe_resource_t *child, gboolean parent_passes,
GList *only_rsc, unsigned int show_opts)
{
bool star_list = pcmk__list_of_1(only_rsc) &&
pcmk__str_eq("*", g_list_first(only_rsc)->data, pcmk__str_none);
bool child_filtered = child->fns->is_filtered(child, only_rsc, FALSE);
bool child_active = child->fns->active(child, FALSE);
bool show_inactive = pcmk_is_set(show_opts, pcmk_show_inactive_rscs);
/* If the resource is in only_rsc by name (so, ignoring "*") then allow
* it regardless of if it's active or not.
*/
if (!star_list && !child_filtered) {
return false;
} else if (!child_filtered && (child_active || show_inactive)) {
return false;
} else if (parent_passes && (child_active || show_inactive)) {
return false;
}
return true;
}
gboolean
group_unpack(pe_resource_t * rsc, pe_working_set_t * data_set)
{
xmlNode *xml_obj = rsc->xml;
xmlNode *xml_native_rsc = NULL;
group_variant_data_t *group_data = NULL;
const char *group_ordered = g_hash_table_lookup(rsc->meta, XML_RSC_ATTR_ORDERED);
const char *group_colocated = g_hash_table_lookup(rsc->meta, "collocated");
const char *clone_id = NULL;
pe_rsc_trace(rsc, "Processing resource %s...", rsc->id);
group_data = calloc(1, sizeof(group_variant_data_t));
group_data->num_children = 0;
group_data->first_child = NULL;
group_data->last_child = NULL;
rsc->variant_opaque = group_data;
// We don't actually need the null checks but it speeds up the common case
if ((group_ordered == NULL)
|| (crm_str_to_boolean(group_ordered, &(group_data->ordered)) < 0)) {
group_data->ordered = TRUE;
}
if ((group_colocated == NULL)
|| (crm_str_to_boolean(group_colocated, &(group_data->colocated)) < 0)) {
group_data->colocated = TRUE;
}
clone_id = crm_element_value(rsc->xml, XML_RSC_ATTR_INCARNATION);
for (xml_native_rsc = pcmk__xe_first_child(xml_obj); xml_native_rsc != NULL;
xml_native_rsc = pcmk__xe_next(xml_native_rsc)) {
if (pcmk__str_eq((const char *)xml_native_rsc->name,
XML_CIB_TAG_RESOURCE, pcmk__str_none)) {
pe_resource_t *new_rsc = NULL;
crm_xml_add(xml_native_rsc, XML_RSC_ATTR_INCARNATION, clone_id);
if (common_unpack(xml_native_rsc, &new_rsc, rsc, data_set) == FALSE) {
pe_err("Failed unpacking resource %s", crm_element_value(xml_obj, XML_ATTR_ID));
if (new_rsc != NULL && new_rsc->fns != NULL) {
new_rsc->fns->free(new_rsc);
}
continue;
}
group_data->num_children++;
rsc->children = g_list_append(rsc->children, new_rsc);
if (group_data->first_child == NULL) {
group_data->first_child = new_rsc;
}
group_data->last_child = new_rsc;
pe_rsc_trace(rsc, "Added %s member %s", rsc->id, new_rsc->id);
}
}
if (group_data->num_children == 0) {
pcmk__config_warn("Group %s does not have any children", rsc->id);
return TRUE; // Allow empty groups, children can be added later
}
pe_rsc_trace(rsc, "Added %d children to resource %s...", group_data->num_children, rsc->id);
return TRUE;
}
gboolean
group_active(pe_resource_t * rsc, gboolean all)
{
gboolean c_all = TRUE;
gboolean c_any = FALSE;
GList *gIter = rsc->children;
for (; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
if (child_rsc->fns->active(child_rsc, all)) {
c_any = TRUE;
} else {
c_all = FALSE;
}
}
if (c_any == FALSE) {
return FALSE;
} else if (all && c_all == FALSE) {
return FALSE;
}
return TRUE;
}
static void
group_print_xml(pe_resource_t * rsc, const char *pre_text, long options, void *print_data)
{
GList *gIter = rsc->children;
char *child_text = crm_strdup_printf("%s ", pre_text);
status_print("%s<group id=\"%s\" ", pre_text, rsc->id);
status_print("number_resources=\"%d\" ", g_list_length(rsc->children));
status_print(">\n");
for (; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
child_rsc->fns->print(child_rsc, child_text, options, print_data);
}
status_print("%s</group>\n", pre_text);
free(child_text);
}
void
group_print(pe_resource_t * rsc, const char *pre_text, long options, void *print_data)
{
char *child_text = NULL;
GList *gIter = rsc->children;
if (pre_text == NULL) {
pre_text = " ";
}
if (options & pe_print_xml) {
group_print_xml(rsc, pre_text, options, print_data);
return;
}
child_text = crm_strdup_printf("%s ", pre_text);
status_print("%sResource Group: %s", pre_text ? pre_text : "", rsc->id);
if (options & pe_print_html) {
status_print("\n<ul>\n");
} else if ((options & pe_print_log) == 0) {
status_print("\n");
}
if (options & pe_print_brief) {
print_rscs_brief(rsc->children, child_text, options, print_data, TRUE);
} else {
for (; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
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");
}
}
}
if (options & pe_print_html) {
status_print("</ul>\n");
}
free(child_text);
}
PCMK__OUTPUT_ARGS("group", "unsigned int", "pe_resource_t *", "GList *", "GList *")
int
pe__group_xml(pcmk__output_t *out, va_list args)
{
unsigned int show_opts = va_arg(args, unsigned int);
pe_resource_t *rsc = va_arg(args, pe_resource_t *);
GList *only_node = va_arg(args, GList *);
GList *only_rsc = va_arg(args, GList *);
GList *gIter = rsc->children;
char *count = pcmk__itoa(g_list_length(gIter));
int rc = pcmk_rc_no_output;
gboolean parent_passes = pcmk__str_in_list(only_rsc, rsc_printable_id(rsc), pcmk__str_none) ||
(strstr(rsc->id, ":") != NULL && pcmk__str_in_list(only_rsc, rsc->id, pcmk__str_none));
if (rsc->fns->is_filtered(rsc, only_rsc, TRUE)) {
free(count);
return rc;
}
for (; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
if (skip_child_rsc(rsc, child_rsc, parent_passes, only_rsc, show_opts)) {
continue;
}
if (rc == pcmk_rc_no_output) {
rc = pe__name_and_nvpairs_xml(out, true, "group", 4
, "id", rsc->id
, "number_resources", count
, "managed", pe__rsc_bool_str(rsc, pe_rsc_managed)
, "disabled", pcmk__btoa(pe__resource_is_disabled(rsc)));
free(count);
CRM_ASSERT(rc == pcmk_rc_ok);
}
out->message(out, crm_map_element_name(child_rsc->xml), show_opts, child_rsc,
only_node, only_rsc);
}
if (rc == pcmk_rc_ok) {
pcmk__output_xml_pop_parent(out);
}
return rc;
}
PCMK__OUTPUT_ARGS("group", "unsigned int", "pe_resource_t *", "GList *", "GList *")
int
pe__group_default(pcmk__output_t *out, va_list args)
{
unsigned int show_opts = va_arg(args, unsigned int);
pe_resource_t *rsc = va_arg(args, pe_resource_t *);
GList *only_node = va_arg(args, GList *);
GList *only_rsc = va_arg(args, GList *);
int rc = pcmk_rc_no_output;
gboolean parent_passes = pcmk__str_in_list(only_rsc, rsc_printable_id(rsc), pcmk__str_none) ||
(strstr(rsc->id, ":") != NULL && pcmk__str_in_list(only_rsc, rsc->id, pcmk__str_none));
gboolean active = rsc->fns->active(rsc, TRUE);
gboolean partially_active = rsc->fns->active(rsc, FALSE);
if (rsc->fns->is_filtered(rsc, only_rsc, TRUE)) {
return rc;
}
if (pcmk_is_set(show_opts, pcmk_show_brief)) {
GList *rscs = pe__filter_rsc_list(rsc->children, only_rsc);
if (rscs != NULL) {
group_header(out, &rc, rsc, !active && partially_active ? inactive_resources(rsc) : 0,
pcmk_is_set(show_opts, pcmk_show_inactive_rscs));
pe__rscs_brief_output(out, rscs, show_opts | pcmk_show_inactive_rscs);
rc = pcmk_rc_ok;
g_list_free(rscs);
}
} else {
for (GList *gIter = rsc->children; gIter; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
if (skip_child_rsc(rsc, child_rsc, parent_passes, only_rsc, show_opts)) {
continue;
}
group_header(out, &rc, rsc, !active && partially_active ? inactive_resources(rsc) : 0,
pcmk_is_set(show_opts, pcmk_show_inactive_rscs));
out->message(out, crm_map_element_name(child_rsc->xml), show_opts,
child_rsc, only_node, only_rsc);
}
}
PCMK__OUTPUT_LIST_FOOTER(out, rc);
return rc;
}
void
group_free(pe_resource_t * rsc)
{
CRM_CHECK(rsc != NULL, return);
pe_rsc_trace(rsc, "Freeing %s", rsc->id);
for (GList *gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
CRM_ASSERT(child_rsc);
pe_rsc_trace(child_rsc, "Freeing child %s", child_rsc->id);
child_rsc->fns->free(child_rsc);
}
pe_rsc_trace(rsc, "Freeing child list");
g_list_free(rsc->children);
common_free(rsc);
}
enum rsc_role_e
group_resource_state(const pe_resource_t * rsc, gboolean current)
{
enum rsc_role_e group_role = RSC_ROLE_UNKNOWN;
GList *gIter = rsc->children;
for (; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
enum rsc_role_e role = child_rsc->fns->state(child_rsc, current);
if (role > group_role) {
group_role = role;
}
}
pe_rsc_trace(rsc, "%s role: %s", rsc->id, role2text(group_role));
return group_role;
}
gboolean
pe__group_is_filtered(pe_resource_t *rsc, GList *only_rsc, gboolean check_parent)
{
gboolean passes = FALSE;
if (check_parent && pcmk__str_in_list(only_rsc, rsc_printable_id(uber_parent(rsc)), pcmk__str_none)) {
passes = TRUE;
} else if (pcmk__str_in_list(only_rsc, rsc_printable_id(rsc), pcmk__str_none)) {
passes = TRUE;
} else if (strstr(rsc->id, ":") != NULL && pcmk__str_in_list(only_rsc, rsc->id, pcmk__str_none)) {
passes = TRUE;
} else {
for (GList *gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
if (!child_rsc->fns->is_filtered(child_rsc, only_rsc, FALSE)) {
passes = TRUE;
break;
}
}
}
return !passes;
}
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