lib/pengine/complex.c

/* */
This source file includes following definitions.
get_resource_type
dup_attr
get_meta_attributes
get_rsc_attributes
pe_get_versioned_attributes
template_op_key
unpack_template
add_template_rsc
detect_promotable
common_unpack
common_update_score
is_parent
uber_parent
common_free
pe__find_active_on
pe__find_active_requires
pe__count_common
   1 /*
   2  * Copyright 2004-2020 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU Lesser General Public License
   7  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <crm/pengine/rules.h>
  13 #include <crm/pengine/internal.h>
  14 #include <crm/msg_xml.h>
  15 #include <crm/common/xml_internal.h>
  16 
  17 void populate_hash(xmlNode * nvpair_list, GHashTable * hash, const char **attrs, int attrs_length);
  18 
  19 resource_object_functions_t resource_class_functions[] = {
  20     {
  21          native_unpack,
  22          native_find_rsc,
  23          native_parameter,
  24          native_print,
  25          native_active,
  26          native_resource_state,
  27          native_location,
  28          native_free,
  29          pe__count_common,
  30          pe__native_is_filtered,
  31     },
  32     {
  33          group_unpack,
  34          native_find_rsc,
  35          native_parameter,
  36          group_print,
  37          group_active,
  38          group_resource_state,
  39          native_location,
  40          group_free,
  41          pe__count_common,
  42          pe__group_is_filtered,
  43     },
  44     {
  45          clone_unpack,
  46          native_find_rsc,
  47          native_parameter,
  48          clone_print,
  49          clone_active,
  50          clone_resource_state,
  51          native_location,
  52          clone_free,
  53          pe__count_common,
  54          pe__clone_is_filtered,
  55     },
  56     {
  57          pe__unpack_bundle,
  58          native_find_rsc,
  59          native_parameter,
  60          pe__print_bundle,
  61          pe__bundle_active,
  62          pe__bundle_resource_state,
  63          native_location,
  64          pe__free_bundle,
  65          pe__count_bundle,
  66          pe__bundle_is_filtered,
  67     }
  68 };
  69 
  70 static enum pe_obj_types
  71 get_resource_type(const char *name)
     /*  */
  72 {
  73     if (pcmk__str_eq(name, XML_CIB_TAG_RESOURCE, pcmk__str_casei)) {
  74         return pe_native;
  75 
  76     } else if (pcmk__str_eq(name, XML_CIB_TAG_GROUP, pcmk__str_casei)) {
  77         return pe_group;
  78 
  79     } else if (pcmk__str_eq(name, XML_CIB_TAG_INCARNATION, pcmk__str_casei)) {
  80         return pe_clone;
  81 
  82     } else if (pcmk__str_eq(name, XML_CIB_TAG_MASTER, pcmk__str_casei)) {
  83         // @COMPAT deprecated since 2.0.0
  84         return pe_clone;
  85 
  86     } else if (pcmk__str_eq(name, XML_CIB_TAG_CONTAINER, pcmk__str_casei)) {
  87         return pe_container;
  88     }
  89 
  90     return pe_unknown;
  91 }
  92 
  93 static void
  94 dup_attr(gpointer key, gpointer value, gpointer user_data)
     /*  */
  95 {
  96     add_hash_param(user_data, key, value);
  97 }
  98 
  99 void
 100 get_meta_attributes(GHashTable * meta_hash, pe_resource_t * rsc,
     /*  */
 101                     pe_node_t * node, pe_working_set_t * data_set)
 102 {
 103     pe_rsc_eval_data_t rsc_rule_data = {
 104         .standard = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS),
 105         .provider = crm_element_value(rsc->xml, XML_AGENT_ATTR_PROVIDER),
 106         .agent = crm_element_value(rsc->xml, XML_EXPR_ATTR_TYPE)
 107     };
 108 
 109     pe_rule_eval_data_t rule_data = {
 110         .node_hash = NULL,
 111         .role = RSC_ROLE_UNKNOWN,
 112         .now = data_set->now,
 113         .match_data = NULL,
 114         .rsc_data = &rsc_rule_data,
 115         .op_data = NULL
 116     };
 117 
 118     if (node) {
 119         rule_data.node_hash = node->details->attrs;
 120     }
 121 
 122     if (rsc->xml) {
 123         xmlAttrPtr xIter = NULL;
 124 
 125         for (xIter = rsc->xml->properties; xIter; xIter = xIter->next) {
 126             const char *prop_name = (const char *)xIter->name;
 127             const char *prop_value = crm_element_value(rsc->xml, prop_name);
 128 
 129             add_hash_param(meta_hash, prop_name, prop_value);
 130         }
 131     }
 132 
 133     pe__unpack_dataset_nvpairs(rsc->xml, XML_TAG_META_SETS, &rule_data,
 134                                meta_hash, NULL, FALSE, data_set);
 135 
 136     /* set anything else based on the parent */
 137     if (rsc->parent != NULL) {
 138         g_hash_table_foreach(rsc->parent->meta, dup_attr, meta_hash);
 139     }
 140 
 141     /* and finally check the defaults */
 142     pe__unpack_dataset_nvpairs(data_set->rsc_defaults, XML_TAG_META_SETS,
 143                                &rule_data, meta_hash, NULL, FALSE, data_set);
 144 }
 145 
 146 void
 147 get_rsc_attributes(GHashTable * meta_hash, pe_resource_t * rsc,
     /*  */
 148                    pe_node_t * node, pe_working_set_t * data_set)
 149 {
 150     pe_rule_eval_data_t rule_data = {
 151         .node_hash = NULL,
 152         .role = RSC_ROLE_UNKNOWN,
 153         .now = data_set->now,
 154         .match_data = NULL,
 155         .rsc_data = NULL,
 156         .op_data = NULL
 157     };
 158 
 159     if (node) {
 160         rule_data.node_hash = node->details->attrs;
 161     }
 162 
 163     pe__unpack_dataset_nvpairs(rsc->xml, XML_TAG_ATTR_SETS, &rule_data,
 164                                meta_hash, NULL, FALSE, data_set);
 165 
 166     /* set anything else based on the parent */
 167     if (rsc->parent != NULL) {
 168         get_rsc_attributes(meta_hash, rsc->parent, node, data_set);
 169 
 170     } else {
 171         /* and finally check the defaults */
 172         pe__unpack_dataset_nvpairs(data_set->rsc_defaults, XML_TAG_ATTR_SETS,
 173                                    &rule_data, meta_hash, NULL, FALSE, data_set);
 174     }
 175 }
 176 
 177 #if ENABLE_VERSIONED_ATTRS
 178 void
 179 pe_get_versioned_attributes(xmlNode * meta_hash, pe_resource_t * rsc,
     /*  */
 180                             pe_node_t * node, pe_working_set_t * data_set)
 181 {
 182     pe_rule_eval_data_t rule_data = {
 183         .node_hash = (node == NULL)? NULL : node->details->attrs,
 184         .role = RSC_ROLE_UNKNOWN,
 185         .now = data_set->now,
 186         .match_data = NULL,
 187         .rsc_data = NULL,
 188         .op_data = NULL
 189     };
 190 
 191     pe_eval_versioned_attributes(data_set->input, rsc->xml, XML_TAG_ATTR_SETS,
 192                                  &rule_data, meta_hash, NULL);
 193 
 194     /* set anything else based on the parent */
 195     if (rsc->parent != NULL) {
 196         pe_get_versioned_attributes(meta_hash, rsc->parent, node, data_set);
 197 
 198     } else {
 199         /* and finally check the defaults */
 200         pe_eval_versioned_attributes(data_set->input, data_set->rsc_defaults,
 201                                      XML_TAG_ATTR_SETS, &rule_data, meta_hash,
 202                                      NULL);
 203     }
 204 }
 205 #endif
 206 
 207 static char *
 208 template_op_key(xmlNode * op)
     /*  */
 209 {
 210     const char *name = crm_element_value(op, "name");
 211     const char *role = crm_element_value(op, "role");
 212     char *key = NULL;
 213 
 214     if (pcmk__str_eq(role, RSC_ROLE_STARTED_S, pcmk__str_null_matches)
 215         || pcmk__str_eq(role, RSC_ROLE_SLAVE_S, pcmk__str_none)) {
 216         role = RSC_ROLE_UNKNOWN_S;
 217     }
 218 
 219     key = crm_strdup_printf("%s-%s", name, role);
 220     return key;
 221 }
 222 
 223 static gboolean
 224 unpack_template(xmlNode * xml_obj, xmlNode ** expanded_xml, pe_working_set_t * data_set)
     /*  */
 225 {
 226     xmlNode *cib_resources = NULL;
 227     xmlNode *template = NULL;
 228     xmlNode *new_xml = NULL;
 229     xmlNode *child_xml = NULL;
 230     xmlNode *rsc_ops = NULL;
 231     xmlNode *template_ops = NULL;
 232     const char *template_ref = NULL;
 233     const char *clone = NULL;
 234     const char *id = NULL;
 235 
 236     if (xml_obj == NULL) {
 237         pe_err("No resource object for template unpacking");
 238         return FALSE;
 239     }
 240 
 241     template_ref = crm_element_value(xml_obj, XML_CIB_TAG_RSC_TEMPLATE);
 242     if (template_ref == NULL) {
 243         return TRUE;
 244     }
 245 
 246     id = ID(xml_obj);
 247     if (id == NULL) {
 248         pe_err("'%s' object must have a id", crm_element_name(xml_obj));
 249         return FALSE;
 250     }
 251 
 252     if (pcmk__str_eq(template_ref, id, pcmk__str_none)) {
 253         pe_err("The resource object '%s' should not reference itself", id);
 254         return FALSE;
 255     }
 256 
 257     cib_resources = get_xpath_object("//"XML_CIB_TAG_RESOURCES, data_set->input, LOG_TRACE);
 258     if (cib_resources == NULL) {
 259         pe_err("No resources configured");
 260         return FALSE;
 261     }
 262 
 263     template = pcmk__xe_match(cib_resources, XML_CIB_TAG_RSC_TEMPLATE,
 264                               XML_ATTR_ID, template_ref);
 265     if (template == NULL) {
 266         pe_err("No template named '%s'", template_ref);
 267         return FALSE;
 268     }
 269 
 270     new_xml = copy_xml(template);
 271     xmlNodeSetName(new_xml, xml_obj->name);
 272     crm_xml_replace(new_xml, XML_ATTR_ID, id);
 273 
 274     clone = crm_element_value(xml_obj, XML_RSC_ATTR_INCARNATION);
 275     if(clone) {
 276         crm_xml_add(new_xml, XML_RSC_ATTR_INCARNATION, clone);
 277     }
 278 
 279     template_ops = find_xml_node(new_xml, "operations", FALSE);
 280 
 281     for (child_xml = pcmk__xe_first_child(xml_obj); child_xml != NULL;
 282          child_xml = pcmk__xe_next(child_xml)) {
 283         xmlNode *new_child = NULL;
 284 
 285         new_child = add_node_copy(new_xml, child_xml);
 286 
 287         if (pcmk__str_eq((const char *)new_child->name, "operations", pcmk__str_none)) {
 288             rsc_ops = new_child;
 289         }
 290     }
 291 
 292     if (template_ops && rsc_ops) {
 293         xmlNode *op = NULL;
 294         GHashTable *rsc_ops_hash = g_hash_table_new_full(crm_str_hash,
 295                                                          g_str_equal, free,
 296                                                          NULL);
 297 
 298         for (op = pcmk__xe_first_child(rsc_ops); op != NULL;
 299              op = pcmk__xe_next(op)) {
 300 
 301             char *key = template_op_key(op);
 302 
 303             g_hash_table_insert(rsc_ops_hash, key, op);
 304         }
 305 
 306         for (op = pcmk__xe_first_child(template_ops); op != NULL;
 307              op = pcmk__xe_next(op)) {
 308 
 309             char *key = template_op_key(op);
 310 
 311             if (g_hash_table_lookup(rsc_ops_hash, key) == NULL) {
 312                 add_node_copy(rsc_ops, op);
 313             }
 314 
 315             free(key);
 316         }
 317 
 318         if (rsc_ops_hash) {
 319             g_hash_table_destroy(rsc_ops_hash);
 320         }
 321 
 322         free_xml(template_ops);
 323     }
 324 
 325     /*free_xml(*expanded_xml); */
 326     *expanded_xml = new_xml;
 327 
 328     /* Disable multi-level templates for now */
 329     /*if(unpack_template(new_xml, expanded_xml, data_set) == FALSE) {
 330        free_xml(*expanded_xml);
 331        *expanded_xml = NULL;
 332 
 333        return FALSE;
 334        } */
 335 
 336     return TRUE;
 337 }
 338 
 339 static gboolean
 340 add_template_rsc(xmlNode * xml_obj, pe_working_set_t * data_set)
     /*  */
 341 {
 342     const char *template_ref = NULL;
 343     const char *id = NULL;
 344 
 345     if (xml_obj == NULL) {
 346         pe_err("No resource object for processing resource list of template");
 347         return FALSE;
 348     }
 349 
 350     template_ref = crm_element_value(xml_obj, XML_CIB_TAG_RSC_TEMPLATE);
 351     if (template_ref == NULL) {
 352         return TRUE;
 353     }
 354 
 355     id = ID(xml_obj);
 356     if (id == NULL) {
 357         pe_err("'%s' object must have a id", crm_element_name(xml_obj));
 358         return FALSE;
 359     }
 360 
 361     if (pcmk__str_eq(template_ref, id, pcmk__str_none)) {
 362         pe_err("The resource object '%s' should not reference itself", id);
 363         return FALSE;
 364     }
 365 
 366     if (add_tag_ref(data_set->template_rsc_sets, template_ref, id) == FALSE) {
 367         return FALSE;
 368     }
 369 
 370     return TRUE;
 371 }
 372 
 373 static bool
 374 detect_promotable(pe_resource_t *rsc)
     /*  */
 375 {
 376     const char *promotable = g_hash_table_lookup(rsc->meta,
 377                                                  XML_RSC_ATTR_PROMOTABLE);
 378 
 379     if (crm_is_true(promotable)) {
 380         return TRUE;
 381     }
 382 
 383     // @COMPAT deprecated since 2.0.0
 384     if (pcmk__str_eq(crm_element_name(rsc->xml), XML_CIB_TAG_MASTER, pcmk__str_casei)) {
 385         /* @TODO in some future version, pe_warn_once() here,
 386          *       then drop support in even later version
 387          */
 388         g_hash_table_insert(rsc->meta, strdup(XML_RSC_ATTR_PROMOTABLE),
 389                             strdup(XML_BOOLEAN_TRUE));
 390         return TRUE;
 391     }
 392     return FALSE;
 393 }
 394 
 395 gboolean
 396 common_unpack(xmlNode * xml_obj, pe_resource_t ** rsc,
     /*  */
 397               pe_resource_t * parent, pe_working_set_t * data_set)
 398 {
 399     bool isdefault = FALSE;
 400     xmlNode *expanded_xml = NULL;
 401     xmlNode *ops = NULL;
 402     const char *value = NULL;
 403     const char *rclass = NULL; /* Look for this after any templates have been expanded */
 404     const char *id = crm_element_value(xml_obj, XML_ATTR_ID);
 405     bool guest_node = FALSE;
 406     bool remote_node = FALSE;
 407     bool has_versioned_params = FALSE;
 408 
 409     pe_rule_eval_data_t rule_data = {
 410         .node_hash = NULL,
 411         .role = RSC_ROLE_UNKNOWN,
 412         .now = data_set->now,
 413         .match_data = NULL,
 414         .rsc_data = NULL,
 415         .op_data = NULL
 416     };
 417 
 418     crm_log_xml_trace(xml_obj, "Processing resource input...");
 419 
 420     if (id == NULL) {
 421         pe_err("Must specify id tag in <resource>");
 422         return FALSE;
 423 
 424     } else if (rsc == NULL) {
 425         pe_err("Nowhere to unpack resource into");
 426         return FALSE;
 427 
 428     }
 429 
 430     if (unpack_template(xml_obj, &expanded_xml, data_set) == FALSE) {
 431         return FALSE;
 432     }
 433 
 434     *rsc = calloc(1, sizeof(pe_resource_t));
 435     (*rsc)->cluster = data_set;
 436 
 437     if (expanded_xml) {
 438         crm_log_xml_trace(expanded_xml, "Expanded resource...");
 439         (*rsc)->xml = expanded_xml;
 440         (*rsc)->orig_xml = xml_obj;
 441 
 442     } else {
 443         (*rsc)->xml = xml_obj;
 444         (*rsc)->orig_xml = NULL;
 445     }
 446 
 447     /* Do not use xml_obj from here on, use (*rsc)->xml in case templates are involved */
 448     rclass = crm_element_value((*rsc)->xml, XML_AGENT_ATTR_CLASS);
 449     (*rsc)->parent = parent;
 450 
 451     ops = find_xml_node((*rsc)->xml, "operations", FALSE);
 452     (*rsc)->ops_xml = expand_idref(ops, data_set->input);
 453 
 454     (*rsc)->variant = get_resource_type(crm_element_name((*rsc)->xml));
 455     if ((*rsc)->variant == pe_unknown) {
 456         pe_err("Unknown resource type: %s", crm_element_name((*rsc)->xml));
 457         free(*rsc);
 458         return FALSE;
 459     }
 460 
 461     (*rsc)->parameters = crm_str_table_new();
 462 
 463 #if ENABLE_VERSIONED_ATTRS
 464     (*rsc)->versioned_parameters = create_xml_node(NULL, XML_TAG_RSC_VER_ATTRS);
 465 #endif
 466 
 467     (*rsc)->meta = crm_str_table_new();
 468 
 469     (*rsc)->allowed_nodes =
 470         g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, free);
 471 
 472     (*rsc)->known_on = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL,
 473                                              free);
 474 
 475     value = crm_element_value((*rsc)->xml, XML_RSC_ATTR_INCARNATION);
 476     if (value) {
 477         (*rsc)->id = crm_strdup_printf("%s:%s", id, value);
 478         add_hash_param((*rsc)->meta, XML_RSC_ATTR_INCARNATION, value);
 479 
 480     } else {
 481         (*rsc)->id = strdup(id);
 482     }
 483 
 484     (*rsc)->fns = &resource_class_functions[(*rsc)->variant];
 485     pe_rsc_trace((*rsc), "Unpacking resource...");
 486 
 487     get_meta_attributes((*rsc)->meta, *rsc, NULL, data_set);
 488     get_rsc_attributes((*rsc)->parameters, *rsc, NULL, data_set);
 489 #if ENABLE_VERSIONED_ATTRS
 490     pe_get_versioned_attributes((*rsc)->versioned_parameters, *rsc, NULL, data_set);
 491 #endif
 492 
 493     (*rsc)->flags = 0;
 494     pe__set_resource_flags(*rsc, pe_rsc_runnable|pe_rsc_provisional);
 495 
 496     if (!pcmk_is_set(data_set->flags, pe_flag_maintenance_mode)) {
 497         pe__set_resource_flags(*rsc, pe_rsc_managed);
 498     }
 499 
 500     (*rsc)->rsc_cons = NULL;
 501     (*rsc)->rsc_tickets = NULL;
 502     (*rsc)->actions = NULL;
 503     (*rsc)->role = RSC_ROLE_STOPPED;
 504     (*rsc)->next_role = RSC_ROLE_UNKNOWN;
 505 
 506     (*rsc)->recovery_type = recovery_stop_start;
 507     (*rsc)->stickiness = 0;
 508     (*rsc)->migration_threshold = INFINITY;
 509     (*rsc)->failure_timeout = 0;
 510 
 511     value = g_hash_table_lookup((*rsc)->meta, XML_CIB_ATTR_PRIORITY);
 512     (*rsc)->priority = crm_parse_int(value, "0");
 513 
 514     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_NOTIFY);
 515     if (crm_is_true(value)) {
 516         pe__set_resource_flags(*rsc, pe_rsc_notify);
 517     }
 518 
 519     if (xml_contains_remote_node((*rsc)->xml)) {
 520         (*rsc)->is_remote_node = TRUE;
 521         if (g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_CONTAINER)) {
 522             guest_node = TRUE;
 523         } else {
 524             remote_node = TRUE;
 525         }
 526     }
 527 
 528     value = g_hash_table_lookup((*rsc)->meta, XML_OP_ATTR_ALLOW_MIGRATE);
 529 #if ENABLE_VERSIONED_ATTRS
 530     has_versioned_params = xml_has_children((*rsc)->versioned_parameters);
 531 #endif
 532     if (crm_is_true(value) && has_versioned_params) {
 533         pe_rsc_trace((*rsc), "Migration is disabled for resources with versioned parameters");
 534     } else if (crm_is_true(value)) {
 535         pe__set_resource_flags(*rsc, pe_rsc_allow_migrate);
 536     } else if ((value == NULL) && remote_node && !has_versioned_params) {
 537         /* By default, we want remote nodes to be able
 538          * to float around the cluster without having to stop all the
 539          * resources within the remote-node before moving. Allowing
 540          * migration support enables this feature. If this ever causes
 541          * problems, migration support can be explicitly turned off with
 542          * allow-migrate=false.
 543          * We don't support migration for versioned resources, though. */
 544         pe__set_resource_flags(*rsc, pe_rsc_allow_migrate);
 545     }
 546 
 547     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MANAGED);
 548     if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
 549         if (crm_is_true(value)) {
 550             pe__set_resource_flags(*rsc, pe_rsc_managed);
 551         } else {
 552             pe__clear_resource_flags(*rsc, pe_rsc_managed);
 553         }
 554     }
 555 
 556     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MAINTENANCE);
 557     if (crm_is_true(value)) {
 558         pe__clear_resource_flags(*rsc, pe_rsc_managed);
 559         pe__set_resource_flags(*rsc, pe_rsc_maintenance);
 560     }
 561     if (pcmk_is_set(data_set->flags, pe_flag_maintenance_mode)) {
 562         pe__clear_resource_flags(*rsc, pe_rsc_managed);
 563         pe__set_resource_flags(*rsc, pe_rsc_maintenance);
 564     }
 565 
 566     if (pe_rsc_is_clone(uber_parent(*rsc))) {
 567         value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_UNIQUE);
 568         if (crm_is_true(value)) {
 569             pe__set_resource_flags(*rsc, pe_rsc_unique);
 570         }
 571         if (detect_promotable(*rsc)) {
 572             pe__set_resource_flags(*rsc, pe_rsc_promotable);
 573         }
 574     } else {
 575         pe__set_resource_flags(*rsc, pe_rsc_unique);
 576     }
 577 
 578     pe_rsc_trace((*rsc), "Options for %s", (*rsc)->id);
 579 
 580     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_RESTART);
 581     if (pcmk__str_eq(value, "restart", pcmk__str_casei)) {
 582         (*rsc)->restart_type = pe_restart_restart;
 583         pe_rsc_trace((*rsc), "\tDependency restart handling: restart");
 584         pe_warn_once(pe_wo_restart_type,
 585                      "Support for restart-type is deprecated and will be removed in a future release");
 586 
 587     } else {
 588         (*rsc)->restart_type = pe_restart_ignore;
 589         pe_rsc_trace((*rsc), "\tDependency restart handling: ignore");
 590     }
 591 
 592     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_MULTIPLE);
 593     if (pcmk__str_eq(value, "stop_only", pcmk__str_casei)) {
 594         (*rsc)->recovery_type = recovery_stop_only;
 595         pe_rsc_trace((*rsc), "\tMultiple running resource recovery: stop only");
 596 
 597     } else if (pcmk__str_eq(value, "block", pcmk__str_casei)) {
 598         (*rsc)->recovery_type = recovery_block;
 599         pe_rsc_trace((*rsc), "\tMultiple running resource recovery: block");
 600 
 601     } else {
 602         (*rsc)->recovery_type = recovery_stop_start;
 603         pe_rsc_trace((*rsc), "\tMultiple running resource recovery: stop/start");
 604     }
 605 
 606     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_STICKINESS);
 607     if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
 608         (*rsc)->stickiness = char2score(value);
 609     }
 610 
 611     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_FAIL_STICKINESS);
 612     if (value != NULL && !pcmk__str_eq("default", value, pcmk__str_casei)) {
 613         (*rsc)->migration_threshold = char2score(value);
 614         if ((*rsc)->migration_threshold < 0) {
 615             /* @TODO We use 1 here to preserve previous behavior, but this
 616              * should probably use the default (INFINITY) or 0 (to disable)
 617              * instead.
 618              */
 619             pe_warn_once(pe_wo_neg_threshold,
 620                          XML_RSC_ATTR_FAIL_STICKINESS
 621                          " must be non-negative, using 1 instead");
 622             (*rsc)->migration_threshold = 1;
 623         }
 624     }
 625 
 626     if (pcmk__str_eq(rclass, PCMK_RESOURCE_CLASS_STONITH, pcmk__str_casei)) {
 627         pe__set_working_set_flags(data_set, pe_flag_have_stonith_resource);
 628         pe__set_resource_flags(*rsc, pe_rsc_fence_device);
 629     }
 630 
 631     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_REQUIRES);
 632 
 633   handle_requires_pref:
 634     if (pcmk__str_eq(value, "nothing", pcmk__str_casei)) {
 635 
 636     } else if (pcmk__str_eq(value, "quorum", pcmk__str_casei)) {
 637         pe__set_resource_flags(*rsc, pe_rsc_needs_quorum);
 638 
 639     } else if (pcmk__str_eq(value, "unfencing", pcmk__str_casei)) {
 640         if (pcmk_is_set((*rsc)->flags, pe_rsc_fence_device)) {
 641             pcmk__config_warn("Resetting '" XML_RSC_ATTR_REQUIRES "' for %s "
 642                               "to 'quorum' because fencing devices cannot "
 643                               "require unfencing", (*rsc)->id);
 644             value = "quorum";
 645             isdefault = TRUE;
 646             goto handle_requires_pref;
 647 
 648         } else if (!pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
 649             pcmk__config_warn("Resetting '" XML_RSC_ATTR_REQUIRES "' for %s "
 650                               "to 'quorum' because fencing is disabled",
 651                               (*rsc)->id);
 652             value = "quorum";
 653             isdefault = TRUE;
 654             goto handle_requires_pref;
 655 
 656         } else {
 657             pe__set_resource_flags(*rsc, pe_rsc_needs_fencing
 658                                            |pe_rsc_needs_unfencing);
 659         }
 660 
 661     } else if (pcmk__str_eq(value, "fencing", pcmk__str_casei)) {
 662         pe__set_resource_flags(*rsc, pe_rsc_needs_fencing);
 663         if (!pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
 664             pcmk__config_warn("%s requires fencing but fencing is disabled",
 665                               (*rsc)->id);
 666         }
 667 
 668     } else {
 669         const char *orig_value = value;
 670 
 671         isdefault = TRUE;
 672         if (pcmk_is_set((*rsc)->flags, pe_rsc_fence_device)) {
 673             value = "quorum";
 674 
 675         } else if (((*rsc)->variant == pe_native)
 676                    && pcmk__str_eq(crm_element_value((*rsc)->xml, XML_AGENT_ATTR_CLASS), PCMK_RESOURCE_CLASS_OCF, pcmk__str_casei)
 677                    && pcmk__str_eq(crm_element_value((*rsc)->xml, XML_AGENT_ATTR_PROVIDER), "pacemaker", pcmk__str_casei)
 678                    && pcmk__str_eq(crm_element_value((*rsc)->xml, XML_ATTR_TYPE), "remote", pcmk__str_casei)
 679             ) {
 680             value = "quorum";
 681 
 682         } else if (pcmk_is_set(data_set->flags, pe_flag_enable_unfencing)) {
 683             value = "unfencing";
 684 
 685         } else if (pcmk_is_set(data_set->flags, pe_flag_stonith_enabled)) {
 686             value = "fencing";
 687 
 688         } else if (data_set->no_quorum_policy == no_quorum_ignore) {
 689             value = "nothing";
 690 
 691         } else {
 692             value = "quorum";
 693         }
 694 
 695         if (orig_value != NULL) {
 696             pcmk__config_err("Resetting '" XML_RSC_ATTR_REQUIRES "' for %s "
 697                              "to '%s' because '%s' is not valid",
 698                               (*rsc)->id, value, orig_value);
 699         }
 700 
 701         goto handle_requires_pref;
 702     }
 703 
 704     pe_rsc_trace((*rsc), "\tRequired to start: %s%s", value, isdefault?" (default)":"");
 705     value = g_hash_table_lookup((*rsc)->meta, XML_RSC_ATTR_FAIL_TIMEOUT);
 706     if (value != NULL) {
 707         // Stored as seconds
 708         (*rsc)->failure_timeout = (int) (crm_parse_interval_spec(value) / 1000);
 709     }
 710 
 711     if (remote_node) {
 712         value = g_hash_table_lookup((*rsc)->parameters, XML_REMOTE_ATTR_RECONNECT_INTERVAL);
 713         if (value) {
 714             /* reconnect delay works by setting failure_timeout and preventing the
 715              * connection from starting until the failure is cleared. */
 716             (*rsc)->remote_reconnect_ms = crm_parse_interval_spec(value);
 717             /* we want to override any default failure_timeout in use when remote
 718              * reconnect_interval is in use. */ 
 719             (*rsc)->failure_timeout = (*rsc)->remote_reconnect_ms / 1000;
 720         }
 721     }
 722 
 723     get_target_role(*rsc, &((*rsc)->next_role));
 724     pe_rsc_trace((*rsc), "\tDesired next state: %s",
 725                  (*rsc)->next_role != RSC_ROLE_UNKNOWN ? role2text((*rsc)->next_role) : "default");
 726 
 727     if ((*rsc)->fns->unpack(*rsc, data_set) == FALSE) {
 728         return FALSE;
 729     }
 730 
 731     if (pcmk_is_set(data_set->flags, pe_flag_symmetric_cluster)) {
 732         // This tag must stay exactly the same because it is tested elsewhere
 733         resource_location(*rsc, NULL, 0, "symmetric_default", data_set);
 734     } else if (guest_node) {
 735         /* remote resources tied to a container resource must always be allowed
 736          * to opt-in to the cluster. Whether the connection resource is actually
 737          * allowed to be placed on a node is dependent on the container resource */
 738         resource_location(*rsc, NULL, 0, "remote_connection_default", data_set);
 739     }
 740 
 741     pe_rsc_trace((*rsc), "\tAction notification: %s",
 742                  pcmk_is_set((*rsc)->flags, pe_rsc_notify)? "required" : "not required");
 743 
 744     (*rsc)->utilization = crm_str_table_new();
 745 
 746     pe__unpack_dataset_nvpairs((*rsc)->xml, XML_TAG_UTILIZATION, &rule_data,
 747                                (*rsc)->utilization, NULL, FALSE, data_set);
 748 
 749 /*      data_set->resources = g_list_append(data_set->resources, (*rsc)); */
 750 
 751     if (expanded_xml) {
 752         if (add_template_rsc(xml_obj, data_set) == FALSE) {
 753             return FALSE;
 754         }
 755     }
 756     return TRUE;
 757 }
 758 
 759 void
 760 common_update_score(pe_resource_t * rsc, const char *id, int score)
     /*  */
 761 {
 762     pe_node_t *node = NULL;
 763 
 764     node = pe_hash_table_lookup(rsc->allowed_nodes, id);
 765     if (node != NULL) {
 766         pe_rsc_trace(rsc, "Updating score for %s on %s: %d + %d", rsc->id, id, node->weight, score);
 767         node->weight = pe__add_scores(node->weight, score);
 768     }
 769 
 770     if (rsc->children) {
 771         GListPtr gIter = rsc->children;
 772 
 773         for (; gIter != NULL; gIter = gIter->next) {
 774             pe_resource_t *child_rsc = (pe_resource_t *) gIter->data;
 775 
 776             common_update_score(child_rsc, id, score);
 777         }
 778     }
 779 }
 780 
 781 gboolean
 782 is_parent(pe_resource_t *child, pe_resource_t *rsc)
     /*  */
 783 {
 784     pe_resource_t *parent = child;
 785 
 786     if (parent == NULL || rsc == NULL) {
 787         return FALSE;
 788     }
 789     while (parent->parent != NULL) {
 790         if (parent->parent == rsc) {
 791             return TRUE;
 792         }
 793         parent = parent->parent;
 794     }
 795     return FALSE;
 796 }
 797 
 798 pe_resource_t *
 799 uber_parent(pe_resource_t * rsc)
     /*  */
 800 {
 801     pe_resource_t *parent = rsc;
 802 
 803     if (parent == NULL) {
 804         return NULL;
 805     }
 806     while (parent->parent != NULL && parent->parent->variant != pe_container) {
 807         parent = parent->parent;
 808     }
 809     return parent;
 810 }
 811 
 812 void
 813 common_free(pe_resource_t * rsc)
     /*  */
 814 {
 815     if (rsc == NULL) {
 816         return;
 817     }
 818 
 819     pe_rsc_trace(rsc, "Freeing %s %d", rsc->id, rsc->variant);
 820 
 821     g_list_free(rsc->rsc_cons);
 822     g_list_free(rsc->rsc_cons_lhs);
 823     g_list_free(rsc->rsc_tickets);
 824     g_list_free(rsc->dangling_migrations);
 825 
 826     if (rsc->parameters != NULL) {
 827         g_hash_table_destroy(rsc->parameters);
 828     }
 829 #if ENABLE_VERSIONED_ATTRS
 830     if (rsc->versioned_parameters != NULL) {
 831         free_xml(rsc->versioned_parameters);
 832     }
 833 #endif
 834     if (rsc->meta != NULL) {
 835         g_hash_table_destroy(rsc->meta);
 836     }
 837     if (rsc->utilization != NULL) {
 838         g_hash_table_destroy(rsc->utilization);
 839     }
 840 
 841     if ((rsc->parent == NULL) && pcmk_is_set(rsc->flags, pe_rsc_orphan)) {
 842         free_xml(rsc->xml);
 843         rsc->xml = NULL;
 844         free_xml(rsc->orig_xml);
 845         rsc->orig_xml = NULL;
 846 
 847         /* if rsc->orig_xml, then rsc->xml is an expanded xml from a template */
 848     } else if (rsc->orig_xml) {
 849         free_xml(rsc->xml);
 850         rsc->xml = NULL;
 851     }
 852     if (rsc->running_on) {
 853         g_list_free(rsc->running_on);
 854         rsc->running_on = NULL;
 855     }
 856     if (rsc->known_on) {
 857         g_hash_table_destroy(rsc->known_on);
 858         rsc->known_on = NULL;
 859     }
 860     if (rsc->actions) {
 861         g_list_free(rsc->actions);
 862         rsc->actions = NULL;
 863     }
 864     if (rsc->allowed_nodes) {
 865         g_hash_table_destroy(rsc->allowed_nodes);
 866         rsc->allowed_nodes = NULL;
 867     }
 868     g_list_free(rsc->fillers);
 869     g_list_free(rsc->rsc_location);
 870     pe_rsc_trace(rsc, "Resource freed");
 871     free(rsc->id);
 872     free(rsc->clone_name);
 873     free(rsc->allocated_to);
 874     free(rsc->variant_opaque);
 875     free(rsc->pending_task);
 876     free(rsc);
 877 }
 878 
 879 /*!
 880  * \brief
 881  * \internal Find a node (and optionally count all) where resource is active
 882  *
 883  * \param[in]  rsc          Resource to check
 884  * \param[out] count_all    If not NULL, will be set to count of active nodes
 885  * \param[out] count_clean  If not NULL, will be set to count of clean nodes
 886  *
 887  * \return An active node (or NULL if resource is not active anywhere)
 888  *
 889  * \note The order of preference is: an active node that is the resource's
 890  *       partial migration source; if the resource's "requires" is "quorum" or
 891  *       "nothing", the first active node in the list that is clean and online;
 892  *       the first active node in the list.
 893  */
 894 pe_node_t *
 895 pe__find_active_on(const pe_resource_t *rsc, unsigned int *count_all,
     /*  */
 896                    unsigned int *count_clean)
 897 {
 898     pe_node_t *active = NULL;
 899     pe_node_t *node = NULL;
 900     bool keep_looking = FALSE;
 901     bool is_happy = FALSE;
 902 
 903     if (count_all) {
 904         *count_all = 0;
 905     }
 906     if (count_clean) {
 907         *count_clean = 0;
 908     }
 909     if (rsc == NULL) {
 910         return NULL;
 911     }
 912 
 913     for (GList *node_iter = rsc->running_on; node_iter != NULL;
 914          node_iter = node_iter->next) {
 915 
 916         node = node_iter->data;
 917         keep_looking = FALSE;
 918 
 919         is_happy = node->details->online && !node->details->unclean;
 920 
 921         if (count_all) {
 922             ++*count_all;
 923         }
 924         if (count_clean && is_happy) {
 925             ++*count_clean;
 926         }
 927         if (count_all || count_clean) {
 928             // If we're counting, we need to go through entire list
 929             keep_looking = TRUE;
 930         }
 931 
 932         if (rsc->partial_migration_source != NULL) {
 933             if (node->details == rsc->partial_migration_source->details) {
 934                 // This is the migration source
 935                 active = node;
 936             } else {
 937                 keep_looking = TRUE;
 938             }
 939         } else if (!pcmk_is_set(rsc->flags, pe_rsc_needs_fencing)) {
 940             if (is_happy && (!active || !active->details->online
 941                              || active->details->unclean)) {
 942                 // This is the first clean node
 943                 active = node;
 944             } else {
 945                 keep_looking = TRUE;
 946             }
 947         }
 948         if (active == NULL) {
 949             // This is first node in list
 950             active = node;
 951         }
 952 
 953         if (keep_looking == FALSE) {
 954             // Don't waste time iterating if we don't have to
 955             break;
 956         }
 957     }
 958     return active;
 959 }
 960 
 961 /*!
 962  * \brief
 963  * \internal Find and count active nodes according to "requires"
 964  *
 965  * \param[in]  rsc    Resource to check
 966  * \param[out] count  If not NULL, will be set to count of active nodes
 967  *
 968  * \return An active node (or NULL if resource is not active anywhere)
 969  *
 970  * \note This is a convenience wrapper for pe__find_active_on() where the count
 971  *       of all active nodes or only clean active nodes is desired according to
 972  *       the "requires" meta-attribute.
 973  */
 974 pe_node_t *
 975 pe__find_active_requires(const pe_resource_t *rsc, unsigned int *count)
     /*  */
 976 {
 977     if (rsc && !pcmk_is_set(rsc->flags, pe_rsc_needs_fencing)) {
 978         return pe__find_active_on(rsc, NULL, count);
 979     }
 980     return pe__find_active_on(rsc, count, NULL);
 981 }
 982 
 983 void
 984 pe__count_common(pe_resource_t *rsc)
     /*  */
 985 {
 986     if (rsc->children != NULL) {
 987         for (GList *item = rsc->children; item != NULL; item = item->next) {
 988             ((pe_resource_t *) item->data)->fns->count(item->data);
 989         }
 990 
 991     } else if (!pcmk_is_set(rsc->flags, pe_rsc_orphan)
 992                || (rsc->role > RSC_ROLE_STOPPED)) {
 993         rsc->cluster->ninstances++;
 994         if (pe__resource_is_disabled(rsc)) {
 995             rsc->cluster->disabled_resources++;
 996         }
 997         if (pcmk_is_set(rsc->flags, pe_rsc_block)) {
 998             rsc->cluster->blocked_resources++;
 999         }
1000     }
1001 }
/* */
root/lib/pengine/complex.c

DEFINITIONS
