daemons/controld/controld

/* */
This source file includes following definitions.
init_dotfile
do_fsa_action
do_log
controld_init_fsa_trigger
controld_destroy_fsa_trigger
controld_trigger_fsa_as
s_crmd_fsa
s_crmd_fsa_actions
log_fsa_input
check_join_counts
do_state_transition
   1 /*
   2  * Copyright 2004-2022 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 General Public License version 2
   7  * or later (GPLv2+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <sys/param.h>
  13 #include <stdio.h>
  14 #include <stdint.h>                 // uint64_t
  15 #include <string.h>
  16 #include <time.h>
  17 
  18 #include <crm/crm.h>
  19 #include <crm/lrmd.h>
  20 #include <crm/cib.h>
  21 #include <crm/msg_xml.h>
  22 #include <crm/common/xml.h>
  23 #include <crm/cluster/election_internal.h>
  24 #include <crm/cluster.h>
  25 
  26 #include <pacemaker-controld.h>
  27 
  28 //! Triggers an FSA invocation
  29 static crm_trigger_t *fsa_trigger = NULL;
  30 
  31 #define DOT_PREFIX "actions:trace: "
  32 #define do_dot_log(fmt, args...)     crm_trace( fmt, ##args)
  33 
  34 static void do_state_transition(enum crmd_fsa_state cur_state,
  35                                 enum crmd_fsa_state next_state,
  36                                 fsa_data_t *msg_data);
  37 
  38 void s_crmd_fsa_actions(fsa_data_t * fsa_data);
  39 void log_fsa_input(fsa_data_t * stored_msg);
  40 void init_dotfile(void);
  41 
  42 void
  43 init_dotfile(void)
     /*  */
  44 {
  45     do_dot_log(DOT_PREFIX "digraph \"g\" {");
  46     do_dot_log(DOT_PREFIX "     size = \"30,30\"");
  47     do_dot_log(DOT_PREFIX "     graph [");
  48     do_dot_log(DOT_PREFIX "             fontsize = \"12\"");
  49     do_dot_log(DOT_PREFIX "             fontname = \"Times-Roman\"");
  50     do_dot_log(DOT_PREFIX "             fontcolor = \"black\"");
  51     do_dot_log(DOT_PREFIX "             bb = \"0,0,398.922306,478.927856\"");
  52     do_dot_log(DOT_PREFIX "             color = \"black\"");
  53     do_dot_log(DOT_PREFIX "     ]");
  54     do_dot_log(DOT_PREFIX "     node [");
  55     do_dot_log(DOT_PREFIX "             fontsize = \"12\"");
  56     do_dot_log(DOT_PREFIX "             fontname = \"Times-Roman\"");
  57     do_dot_log(DOT_PREFIX "             fontcolor = \"black\"");
  58     do_dot_log(DOT_PREFIX "             shape = \"ellipse\"");
  59     do_dot_log(DOT_PREFIX "             color = \"black\"");
  60     do_dot_log(DOT_PREFIX "     ]");
  61     do_dot_log(DOT_PREFIX "     edge [");
  62     do_dot_log(DOT_PREFIX "             fontsize = \"12\"");
  63     do_dot_log(DOT_PREFIX "             fontname = \"Times-Roman\"");
  64     do_dot_log(DOT_PREFIX "             fontcolor = \"black\"");
  65     do_dot_log(DOT_PREFIX "             color = \"black\"");
  66     do_dot_log(DOT_PREFIX "     ]");
  67     do_dot_log(DOT_PREFIX "// special nodes");
  68     do_dot_log(DOT_PREFIX "     \"S_PENDING\" ");
  69     do_dot_log(DOT_PREFIX "     [");
  70     do_dot_log(DOT_PREFIX "      color = \"blue\"");
  71     do_dot_log(DOT_PREFIX "      fontcolor = \"blue\"");
  72     do_dot_log(DOT_PREFIX "      ]");
  73     do_dot_log(DOT_PREFIX "     \"S_TERMINATE\" ");
  74     do_dot_log(DOT_PREFIX "     [");
  75     do_dot_log(DOT_PREFIX "      color = \"red\"");
  76     do_dot_log(DOT_PREFIX "      fontcolor = \"red\"");
  77     do_dot_log(DOT_PREFIX "      ]");
  78     do_dot_log(DOT_PREFIX "// DC only nodes");
  79     do_dot_log(DOT_PREFIX "     \"S_INTEGRATION\" [ fontcolor = \"green\" ]");
  80     do_dot_log(DOT_PREFIX "     \"S_POLICY_ENGINE\" [ fontcolor = \"green\" ]");
  81     do_dot_log(DOT_PREFIX "     \"S_TRANSITION_ENGINE\" [ fontcolor = \"green\" ]");
  82     do_dot_log(DOT_PREFIX "     \"S_RELEASE_DC\" [ fontcolor = \"green\" ]");
  83     do_dot_log(DOT_PREFIX "     \"S_IDLE\" [ fontcolor = \"green\" ]");
  84 }
  85 
  86 static void
  87 do_fsa_action(fsa_data_t * fsa_data, long long an_action,
     /*  */
  88               void (*function) (long long action,
  89                                 enum crmd_fsa_cause cause,
  90                                 enum crmd_fsa_state cur_state,
  91                                 enum crmd_fsa_input cur_input, fsa_data_t * msg_data))
  92 {
  93     controld_clear_fsa_action_flags(an_action);
  94     crm_trace(DOT_PREFIX "\t// %s", fsa_action2string(an_action));
  95     function(an_action, fsa_data->fsa_cause, controld_globals.fsa_state,
  96              fsa_data->fsa_input, fsa_data);
  97 }
  98 
  99 static const uint64_t startup_actions =
 100     A_STARTUP | A_CIB_START | A_LRM_CONNECT | A_HA_CONNECT | A_READCONFIG |
 101     A_STARTED | A_CL_JOIN_QUERY;
 102 
 103 // A_LOG, A_WARN, A_ERROR
 104 void
 105 do_log(long long action, enum crmd_fsa_cause cause,
     /*  */
 106        enum crmd_fsa_state cur_state,
 107        enum crmd_fsa_input current_input, fsa_data_t *msg_data)
 108 {
 109     unsigned log_type = LOG_TRACE;
 110 
 111     if (action & A_LOG) {
 112         log_type = LOG_INFO;
 113     } else if (action & A_WARN) {
 114         log_type = LOG_WARNING;
 115     } else if (action & A_ERROR) {
 116         log_type = LOG_ERR;
 117     }
 118 
 119     do_crm_log(log_type, "Input %s received in state %s from %s",
 120                fsa_input2string(msg_data->fsa_input),
 121                fsa_state2string(cur_state), msg_data->origin);
 122 
 123     if (msg_data->data_type == fsa_dt_ha_msg) {
 124         ha_msg_input_t *input = fsa_typed_data(msg_data->data_type);
 125 
 126         crm_log_xml_debug(input->msg, __func__);
 127 
 128     } else if (msg_data->data_type == fsa_dt_xml) {
 129         xmlNode *input = fsa_typed_data(msg_data->data_type);
 130 
 131         crm_log_xml_debug(input, __func__);
 132 
 133     } else if (msg_data->data_type == fsa_dt_lrm) {
 134         lrmd_event_data_t *input = fsa_typed_data(msg_data->data_type);
 135 
 136         do_crm_log(log_type,
 137                    "Resource %s: Call ID %d returned %d (%d)."
 138                    "  New status if rc=0: %s",
 139                    input->rsc_id, input->call_id, input->rc,
 140                    input->op_status, (char *)input->user_data);
 141     }
 142 }
 143 
 144 /*!
 145  * \internal
 146  * \brief Initialize the FSA trigger
 147  */
 148 void
 149 controld_init_fsa_trigger(void)
     /*  */
 150 {
 151     fsa_trigger = mainloop_add_trigger(G_PRIORITY_HIGH, crm_fsa_trigger, NULL);
 152 }
 153 
 154 /*!
 155  * \internal
 156  * \brief Destroy the FSA trigger
 157  */
 158 void
 159 controld_destroy_fsa_trigger(void)
     /*  */
 160 {
 161     // This basically will not work, since mainloop has a reference to it
 162     mainloop_destroy_trigger(fsa_trigger);
 163     fsa_trigger = NULL;
 164 }
 165 
 166 /*!
 167  * \internal
 168  * \brief Trigger an FSA invocation
 169  *
 170  * \param[in] fn    Calling function name
 171  * \param[in] line  Line number where call occurred
 172  */
 173 void
 174 controld_trigger_fsa_as(const char *fn, int line)
     /*  */
 175 {
 176     if (fsa_trigger != NULL) {
 177         crm_trace("%s:%d - Triggered FSA invocation", fn, line);
 178         mainloop_set_trigger(fsa_trigger);
 179     }
 180 }
 181 
 182 enum crmd_fsa_state
 183 s_crmd_fsa(enum crmd_fsa_cause cause)
     /*  */
 184 {
 185     controld_globals_t *globals = &controld_globals;
 186     fsa_data_t *fsa_data = NULL;
 187     uint64_t register_copy = controld_globals.fsa_input_register;
 188     uint64_t new_actions = A_NOTHING;
 189     enum crmd_fsa_state last_state;
 190 
 191     crm_trace("FSA invoked with Cause: %s\tState: %s",
 192               fsa_cause2string(cause),
 193               fsa_state2string(globals->fsa_state));
 194 
 195     fsa_dump_actions(controld_globals.fsa_actions, "Initial");
 196 
 197     controld_clear_global_flags(controld_fsa_is_stalled);
 198     if ((controld_globals.fsa_message_queue == NULL)
 199         && (controld_globals.fsa_actions != A_NOTHING)) {
 200         /* fake the first message so we can get into the loop */
 201         fsa_data = calloc(1, sizeof(fsa_data_t));
 202         fsa_data->fsa_input = I_NULL;
 203         fsa_data->fsa_cause = C_FSA_INTERNAL;
 204         fsa_data->origin = __func__;
 205         fsa_data->data_type = fsa_dt_none;
 206         controld_globals.fsa_message_queue
 207             = g_list_append(controld_globals.fsa_message_queue, fsa_data);
 208     }
 209     while ((controld_globals.fsa_message_queue != NULL)
 210            && !pcmk_is_set(controld_globals.flags, controld_fsa_is_stalled)) {
 211         crm_trace("Checking messages (%d remaining)",
 212                   g_list_length(controld_globals.fsa_message_queue));
 213 
 214         fsa_data = get_message();
 215         if(fsa_data == NULL) {
 216             continue;
 217         }
 218 
 219         log_fsa_input(fsa_data);
 220 
 221         /* add any actions back to the queue */
 222         controld_set_fsa_action_flags(fsa_data->actions);
 223         fsa_dump_actions(fsa_data->actions, "Restored actions");
 224 
 225         /* get the next batch of actions */
 226         new_actions = controld_fsa_get_action(fsa_data->fsa_input);
 227         controld_set_fsa_action_flags(new_actions);
 228         fsa_dump_actions(new_actions, "New actions");
 229 
 230         if (fsa_data->fsa_input != I_NULL && fsa_data->fsa_input != I_ROUTER) {
 231             crm_debug("Processing %s: [ state=%s cause=%s origin=%s ]",
 232                       fsa_input2string(fsa_data->fsa_input),
 233                       fsa_state2string(globals->fsa_state),
 234                       fsa_cause2string(fsa_data->fsa_cause), fsa_data->origin);
 235         }
 236 
 237         /* logging : *before* the state is changed */
 238         if (pcmk_is_set(controld_globals.fsa_actions, A_ERROR)) {
 239             do_fsa_action(fsa_data, A_ERROR, do_log);
 240         }
 241         if (pcmk_is_set(controld_globals.fsa_actions, A_WARN)) {
 242             do_fsa_action(fsa_data, A_WARN, do_log);
 243         }
 244         if (pcmk_is_set(controld_globals.fsa_actions, A_LOG)) {
 245             do_fsa_action(fsa_data, A_LOG, do_log);
 246         }
 247 
 248         /* update state variables */
 249         last_state = globals->fsa_state;
 250         globals->fsa_state = controld_fsa_get_next_state(fsa_data->fsa_input);
 251 
 252         /*
 253          * Remove certain actions during shutdown
 254          */
 255         if ((globals->fsa_state == S_STOPPING)
 256             || pcmk_is_set(controld_globals.fsa_input_register, R_SHUTDOWN)) {
 257             controld_clear_fsa_action_flags(startup_actions);
 258         }
 259 
 260         /*
 261          * Hook for change of state.
 262          * Allows actions to be added or removed when entering a state
 263          */
 264         if (last_state != globals->fsa_state) {
 265             do_state_transition(last_state, globals->fsa_state, fsa_data);
 266         } else {
 267             do_dot_log(DOT_PREFIX "\t// FSA input: State=%s \tCause=%s"
 268                        " \tInput=%s \tOrigin=%s() \tid=%d",
 269                        fsa_state2string(globals->fsa_state),
 270                        fsa_cause2string(fsa_data->fsa_cause),
 271                        fsa_input2string(fsa_data->fsa_input), fsa_data->origin, fsa_data->id);
 272         }
 273 
 274         /* start doing things... */
 275         s_crmd_fsa_actions(fsa_data);
 276         delete_fsa_input(fsa_data);
 277     }
 278 
 279     if ((controld_globals.fsa_message_queue != NULL)
 280         || (controld_globals.fsa_actions != A_NOTHING)
 281         || pcmk_is_set(controld_globals.flags, controld_fsa_is_stalled)) {
 282 
 283         crm_debug("Exiting the FSA: queue=%d, fsa_actions=%#llx, stalled=%s",
 284                   g_list_length(controld_globals.fsa_message_queue),
 285                   (unsigned long long) controld_globals.fsa_actions,
 286                   pcmk__btoa(pcmk_is_set(controld_globals.flags,
 287                                          controld_fsa_is_stalled)));
 288     } else {
 289         crm_trace("Exiting the FSA");
 290     }
 291 
 292     /* cleanup inputs? */
 293     if (register_copy != controld_globals.fsa_input_register) {
 294         uint64_t same = register_copy & controld_globals.fsa_input_register;
 295 
 296         fsa_dump_inputs(LOG_DEBUG, "Added",
 297                         controld_globals.fsa_input_register ^ same);
 298         fsa_dump_inputs(LOG_DEBUG, "Removed", register_copy ^ same);
 299     }
 300 
 301     fsa_dump_actions(controld_globals.fsa_actions, "Remaining");
 302     fsa_dump_queue(LOG_DEBUG);
 303 
 304     return globals->fsa_state;
 305 }
 306 
 307 void
 308 s_crmd_fsa_actions(fsa_data_t * fsa_data)
     /*  */
 309 {
 310     /*
 311      * Process actions in order of priority but do only one
 312      * action at a time to avoid complicating the ordering.
 313      */
 314     CRM_CHECK(fsa_data != NULL, return);
 315     while ((controld_globals.fsa_actions != A_NOTHING)
 316            && !pcmk_is_set(controld_globals.flags, controld_fsa_is_stalled)) {
 317 
 318         /* regular action processing in order of action priority
 319          *
 320          * Make sure all actions that connect to required systems
 321          * are performed first
 322          */
 323         if (pcmk_is_set(controld_globals.fsa_actions, A_ERROR)) {
 324             do_fsa_action(fsa_data, A_ERROR, do_log);
 325         } else if (pcmk_is_set(controld_globals.fsa_actions, A_WARN)) {
 326             do_fsa_action(fsa_data, A_WARN, do_log);
 327         } else if (pcmk_is_set(controld_globals.fsa_actions, A_LOG)) {
 328             do_fsa_action(fsa_data, A_LOG, do_log);
 329 
 330             /* get out of here NOW! before anything worse happens */
 331         } else if (pcmk_is_set(controld_globals.fsa_actions, A_EXIT_1)) {
 332             do_fsa_action(fsa_data, A_EXIT_1, do_exit);
 333 
 334             /* sub-system restart */
 335         } else if (pcmk_all_flags_set(controld_globals.fsa_actions,
 336                                       O_LRM_RECONNECT)) {
 337             do_fsa_action(fsa_data, O_LRM_RECONNECT, do_lrm_control);
 338 
 339         } else if (pcmk_all_flags_set(controld_globals.fsa_actions,
 340                                       O_CIB_RESTART)) {
 341             do_fsa_action(fsa_data, O_CIB_RESTART, do_cib_control);
 342 
 343         } else if (pcmk_all_flags_set(controld_globals.fsa_actions,
 344                                       O_PE_RESTART)) {
 345             do_fsa_action(fsa_data, O_PE_RESTART, do_pe_control);
 346 
 347         } else if (pcmk_all_flags_set(controld_globals.fsa_actions,
 348                                       O_TE_RESTART)) {
 349             do_fsa_action(fsa_data, O_TE_RESTART, do_te_control);
 350 
 351             /* essential start tasks */
 352         } else if (pcmk_is_set(controld_globals.fsa_actions, A_STARTUP)) {
 353             do_fsa_action(fsa_data, A_STARTUP, do_startup);
 354         } else if (pcmk_is_set(controld_globals.fsa_actions, A_CIB_START)) {
 355             do_fsa_action(fsa_data, A_CIB_START, do_cib_control);
 356         } else if (pcmk_is_set(controld_globals.fsa_actions, A_HA_CONNECT)) {
 357             do_fsa_action(fsa_data, A_HA_CONNECT, do_ha_control);
 358         } else if (pcmk_is_set(controld_globals.fsa_actions, A_READCONFIG)) {
 359             do_fsa_action(fsa_data, A_READCONFIG, do_read_config);
 360 
 361             /* sub-system start/connect */
 362         } else if (pcmk_is_set(controld_globals.fsa_actions, A_LRM_CONNECT)) {
 363             do_fsa_action(fsa_data, A_LRM_CONNECT, do_lrm_control);
 364         } else if (pcmk_is_set(controld_globals.fsa_actions, A_TE_START)) {
 365             do_fsa_action(fsa_data, A_TE_START, do_te_control);
 366         } else if (pcmk_is_set(controld_globals.fsa_actions, A_PE_START)) {
 367             do_fsa_action(fsa_data, A_PE_START, do_pe_control);
 368 
 369             /* Timers */
 370         } else if (pcmk_is_set(controld_globals.fsa_actions, A_DC_TIMER_STOP)) {
 371             do_fsa_action(fsa_data, A_DC_TIMER_STOP, do_timer_control);
 372         } else if (pcmk_is_set(controld_globals.fsa_actions,
 373                                A_INTEGRATE_TIMER_STOP)) {
 374             do_fsa_action(fsa_data, A_INTEGRATE_TIMER_STOP, do_timer_control);
 375         } else if (pcmk_is_set(controld_globals.fsa_actions,
 376                                A_INTEGRATE_TIMER_START)) {
 377             do_fsa_action(fsa_data, A_INTEGRATE_TIMER_START, do_timer_control);
 378         } else if (pcmk_is_set(controld_globals.fsa_actions,
 379                                A_FINALIZE_TIMER_STOP)) {
 380             do_fsa_action(fsa_data, A_FINALIZE_TIMER_STOP, do_timer_control);
 381         } else if (pcmk_is_set(controld_globals.fsa_actions,
 382                                A_FINALIZE_TIMER_START)) {
 383             do_fsa_action(fsa_data, A_FINALIZE_TIMER_START, do_timer_control);
 384 
 385             /*
 386              * Highest priority actions
 387              */
 388         } else if (pcmk_is_set(controld_globals.fsa_actions, A_MSG_ROUTE)) {
 389             do_fsa_action(fsa_data, A_MSG_ROUTE, do_msg_route);
 390         } else if (pcmk_is_set(controld_globals.fsa_actions, A_RECOVER)) {
 391             do_fsa_action(fsa_data, A_RECOVER, do_recover);
 392         } else if (pcmk_is_set(controld_globals.fsa_actions,
 393                                A_CL_JOIN_RESULT)) {
 394             do_fsa_action(fsa_data, A_CL_JOIN_RESULT,
 395                           do_cl_join_finalize_respond);
 396 
 397         } else if (pcmk_is_set(controld_globals.fsa_actions,
 398                                A_CL_JOIN_REQUEST)) {
 399             do_fsa_action(fsa_data, A_CL_JOIN_REQUEST,
 400                           do_cl_join_offer_respond);
 401 
 402         } else if (pcmk_is_set(controld_globals.fsa_actions, A_SHUTDOWN_REQ)) {
 403             do_fsa_action(fsa_data, A_SHUTDOWN_REQ, do_shutdown_req);
 404         } else if (pcmk_is_set(controld_globals.fsa_actions, A_ELECTION_VOTE)) {
 405             do_fsa_action(fsa_data, A_ELECTION_VOTE, do_election_vote);
 406         } else if (pcmk_is_set(controld_globals.fsa_actions,
 407                                A_ELECTION_COUNT)) {
 408             do_fsa_action(fsa_data, A_ELECTION_COUNT, do_election_count_vote);
 409 
 410         } else if (pcmk_is_set(controld_globals.fsa_actions, A_LRM_EVENT)) {
 411             do_fsa_action(fsa_data, A_LRM_EVENT, do_lrm_event);
 412 
 413             /*
 414              * High priority actions
 415              */
 416         } else if (pcmk_is_set(controld_globals.fsa_actions, A_STARTED)) {
 417             do_fsa_action(fsa_data, A_STARTED, do_started);
 418         } else if (pcmk_is_set(controld_globals.fsa_actions, A_CL_JOIN_QUERY)) {
 419             do_fsa_action(fsa_data, A_CL_JOIN_QUERY, do_cl_join_query);
 420         } else if (pcmk_is_set(controld_globals.fsa_actions,
 421                                A_DC_TIMER_START)) {
 422             do_fsa_action(fsa_data, A_DC_TIMER_START, do_timer_control);
 423 
 424             /*
 425              * Medium priority actions
 426              * - Membership
 427              */
 428         } else if (pcmk_is_set(controld_globals.fsa_actions, A_DC_TAKEOVER)) {
 429             do_fsa_action(fsa_data, A_DC_TAKEOVER, do_dc_takeover);
 430         } else if (pcmk_is_set(controld_globals.fsa_actions, A_DC_RELEASE)) {
 431             do_fsa_action(fsa_data, A_DC_RELEASE, do_dc_release);
 432         } else if (pcmk_is_set(controld_globals.fsa_actions, A_DC_JOIN_FINAL)) {
 433             do_fsa_action(fsa_data, A_DC_JOIN_FINAL, do_dc_join_final);
 434         } else if (pcmk_is_set(controld_globals.fsa_actions,
 435                                A_ELECTION_CHECK)) {
 436             do_fsa_action(fsa_data, A_ELECTION_CHECK, do_election_check);
 437 
 438         } else if (pcmk_is_set(controld_globals.fsa_actions,
 439                                A_ELECTION_START)) {
 440             do_fsa_action(fsa_data, A_ELECTION_START, do_election_vote);
 441 
 442         } else if (pcmk_is_set(controld_globals.fsa_actions,
 443                                A_DC_JOIN_OFFER_ALL)) {
 444             do_fsa_action(fsa_data, A_DC_JOIN_OFFER_ALL, do_dc_join_offer_all);
 445 
 446         } else if (pcmk_is_set(controld_globals.fsa_actions,
 447                                A_DC_JOIN_OFFER_ONE)) {
 448             do_fsa_action(fsa_data, A_DC_JOIN_OFFER_ONE, do_dc_join_offer_one);
 449 
 450         } else if (pcmk_is_set(controld_globals.fsa_actions,
 451                                A_DC_JOIN_PROCESS_REQ)) {
 452             do_fsa_action(fsa_data, A_DC_JOIN_PROCESS_REQ,
 453                           do_dc_join_filter_offer);
 454 
 455         } else if (pcmk_is_set(controld_globals.fsa_actions,
 456                                A_DC_JOIN_PROCESS_ACK)) {
 457             do_fsa_action(fsa_data, A_DC_JOIN_PROCESS_ACK, do_dc_join_ack);
 458 
 459         } else if (pcmk_is_set(controld_globals.fsa_actions,
 460                                A_DC_JOIN_FINALIZE)) {
 461             do_fsa_action(fsa_data, A_DC_JOIN_FINALIZE, do_dc_join_finalize);
 462 
 463         } else if (pcmk_is_set(controld_globals.fsa_actions,
 464                                A_CL_JOIN_ANNOUNCE)) {
 465             do_fsa_action(fsa_data, A_CL_JOIN_ANNOUNCE, do_cl_join_announce);
 466 
 467             /*
 468              * Low(er) priority actions
 469              * Make sure the CIB is always updated before invoking the
 470              * scheduler, and the scheduler before the transition engine.
 471              */
 472         } else if (pcmk_is_set(controld_globals.fsa_actions, A_TE_HALT)) {
 473             do_fsa_action(fsa_data, A_TE_HALT, do_te_invoke);
 474         } else if (pcmk_is_set(controld_globals.fsa_actions, A_TE_CANCEL)) {
 475             do_fsa_action(fsa_data, A_TE_CANCEL, do_te_invoke);
 476         } else if (pcmk_is_set(controld_globals.fsa_actions, A_LRM_INVOKE)) {
 477             do_fsa_action(fsa_data, A_LRM_INVOKE, do_lrm_invoke);
 478         } else if (pcmk_is_set(controld_globals.fsa_actions, A_PE_INVOKE)) {
 479             do_fsa_action(fsa_data, A_PE_INVOKE, do_pe_invoke);
 480         } else if (pcmk_is_set(controld_globals.fsa_actions, A_TE_INVOKE)) {
 481             do_fsa_action(fsa_data, A_TE_INVOKE, do_te_invoke);
 482 
 483             /* Shutdown actions */
 484         } else if (pcmk_is_set(controld_globals.fsa_actions, A_DC_RELEASED)) {
 485             do_fsa_action(fsa_data, A_DC_RELEASED, do_dc_release);
 486         } else if (pcmk_is_set(controld_globals.fsa_actions, A_PE_STOP)) {
 487             do_fsa_action(fsa_data, A_PE_STOP, do_pe_control);
 488         } else if (pcmk_is_set(controld_globals.fsa_actions, A_TE_STOP)) {
 489             do_fsa_action(fsa_data, A_TE_STOP, do_te_control);
 490         } else if (pcmk_is_set(controld_globals.fsa_actions, A_SHUTDOWN)) {
 491             do_fsa_action(fsa_data, A_SHUTDOWN, do_shutdown);
 492         } else if (pcmk_is_set(controld_globals.fsa_actions,
 493                                A_LRM_DISCONNECT)) {
 494             do_fsa_action(fsa_data, A_LRM_DISCONNECT, do_lrm_control);
 495 
 496         } else if (pcmk_is_set(controld_globals.fsa_actions, A_HA_DISCONNECT)) {
 497             do_fsa_action(fsa_data, A_HA_DISCONNECT, do_ha_control);
 498         } else if (pcmk_is_set(controld_globals.fsa_actions, A_CIB_STOP)) {
 499             do_fsa_action(fsa_data, A_CIB_STOP, do_cib_control);
 500         } else if (pcmk_is_set(controld_globals.fsa_actions, A_STOP)) {
 501             do_fsa_action(fsa_data, A_STOP, do_stop);
 502 
 503             /* exit gracefully */
 504         } else if (pcmk_is_set(controld_globals.fsa_actions, A_EXIT_0)) {
 505             do_fsa_action(fsa_data, A_EXIT_0, do_exit);
 506 
 507             /* Error checking and reporting */
 508         } else {
 509             crm_err("Action %s not supported "CRM_XS" %#llx",
 510                     fsa_action2string(controld_globals.fsa_actions),
 511                     (unsigned long long) controld_globals.fsa_actions);
 512             register_fsa_error_adv(C_FSA_INTERNAL, I_ERROR, fsa_data, NULL,
 513                                    __func__);
 514         }
 515     }
 516 }
 517 
 518 void
 519 log_fsa_input(fsa_data_t * stored_msg)
     /*  */
 520 {
 521     CRM_ASSERT(stored_msg);
 522     crm_trace("Processing queued input %d", stored_msg->id);
 523     if (stored_msg->fsa_cause == C_LRM_OP_CALLBACK) {
 524         crm_trace("FSA processing LRM callback from %s", stored_msg->origin);
 525 
 526     } else if (stored_msg->data == NULL) {
 527         crm_trace("FSA processing input from %s", stored_msg->origin);
 528 
 529     } else {
 530         ha_msg_input_t *ha_input = fsa_typed_data_adv(stored_msg, fsa_dt_ha_msg,
 531                                                       __func__);
 532 
 533         crm_trace("FSA processing XML message from %s", stored_msg->origin);
 534         crm_log_xml_trace(ha_input->xml, "FSA message data");
 535     }
 536 }
 537 
 538 static void
 539 check_join_counts(fsa_data_t *msg_data)
     /*  */
 540 {
 541     int count;
 542     guint npeers;
 543 
 544     count = crmd_join_phase_count(crm_join_finalized);
 545     if (count > 0) {
 546         crm_err("%d cluster node%s failed to confirm join",
 547                 count, pcmk__plural_s(count));
 548         crmd_join_phase_log(LOG_NOTICE);
 549         return;
 550     }
 551 
 552     npeers = crm_active_peers();
 553     count = crmd_join_phase_count(crm_join_confirmed);
 554     if (count == npeers) {
 555         if (npeers == 1) {
 556             crm_debug("Sole active cluster node is fully joined");
 557         } else {
 558             crm_debug("All %d active cluster nodes are fully joined", count);
 559         }
 560 
 561     } else if (count > npeers) {
 562         crm_err("New election needed because more nodes confirmed join "
 563                 "than are in membership (%d > %u)", count, npeers);
 564         register_fsa_input(C_FSA_INTERNAL, I_ELECTION, NULL);
 565 
 566     } else if (controld_globals.membership_id != crm_peer_seq) {
 567         crm_info("New join needed because membership changed (%llu -> %llu)",
 568                  controld_globals.membership_id, crm_peer_seq);
 569         register_fsa_input_before(C_FSA_INTERNAL, I_NODE_JOIN, NULL);
 570 
 571     } else {
 572         crm_warn("Only %d of %u active cluster nodes fully joined "
 573                  "(%d did not respond to offer)",
 574                  count, npeers, crmd_join_phase_count(crm_join_welcomed));
 575     }
 576 }
 577 
 578 static void
 579 do_state_transition(enum crmd_fsa_state cur_state,
     /*  */
 580                     enum crmd_fsa_state next_state, fsa_data_t *msg_data)
 581 {
 582     int level = LOG_INFO;
 583     int count = 0;
 584     gboolean clear_recovery_bit = TRUE;
 585 #if 0
 586     uint64_t original_fsa_actions = controld_globals.fsa_actions;
 587 #endif
 588 
 589     enum crmd_fsa_cause cause = msg_data->fsa_cause;
 590     enum crmd_fsa_input current_input = msg_data->fsa_input;
 591 
 592     const char *state_from = fsa_state2string(cur_state);
 593     const char *state_to = fsa_state2string(next_state);
 594     const char *input = fsa_input2string(current_input);
 595 
 596     CRM_LOG_ASSERT(cur_state != next_state);
 597 
 598     do_dot_log(DOT_PREFIX "\t%s -> %s [ label=%s cause=%s origin=%s ]",
 599                state_from, state_to, input, fsa_cause2string(cause), msg_data->origin);
 600 
 601     if (cur_state == S_IDLE || next_state == S_IDLE) {
 602         level = LOG_NOTICE;
 603     } else if (cur_state == S_NOT_DC || next_state == S_NOT_DC) {
 604         level = LOG_NOTICE;
 605     } else if (cur_state == S_ELECTION) {
 606         level = LOG_NOTICE;
 607     } else if (cur_state == S_STARTING) {
 608         level = LOG_NOTICE;
 609     } else if (next_state == S_RECOVERY) {
 610         level = LOG_WARNING;
 611     }
 612 
 613     do_crm_log(level, "State transition %s -> %s "
 614                CRM_XS " input=%s cause=%s origin=%s",
 615                state_from, state_to, input, fsa_cause2string(cause),
 616                msg_data->origin);
 617 
 618     if (next_state != S_ELECTION && cur_state != S_RELEASE_DC) {
 619         controld_stop_current_election_timeout();
 620     }
 621     if (next_state == S_INTEGRATION) {
 622         controld_set_fsa_action_flags(A_INTEGRATE_TIMER_START);
 623     } else {
 624         controld_set_fsa_action_flags(A_INTEGRATE_TIMER_STOP);
 625     }
 626 
 627     if (next_state == S_FINALIZE_JOIN) {
 628         controld_set_fsa_action_flags(A_FINALIZE_TIMER_START);
 629     } else {
 630         controld_set_fsa_action_flags(A_FINALIZE_TIMER_STOP);
 631     }
 632 
 633     if (next_state != S_PENDING) {
 634         controld_set_fsa_action_flags(A_DC_TIMER_STOP);
 635     }
 636     if (next_state != S_IDLE) {
 637         controld_stop_recheck_timer();
 638     }
 639 
 640     if (cur_state == S_FINALIZE_JOIN && next_state == S_POLICY_ENGINE) {
 641         populate_cib_nodes(node_update_quick|node_update_all, __func__);
 642     }
 643 
 644     switch (next_state) {
 645         case S_PENDING:
 646             {
 647                 cib_t *cib_conn = controld_globals.cib_conn;
 648                 cib_conn->cmds->set_secondary(cib_conn, cib_scope_local);
 649             }
 650             update_dc(NULL);
 651             break;
 652 
 653         case S_ELECTION:
 654             update_dc(NULL);
 655             break;
 656 
 657         case S_NOT_DC:
 658             controld_reset_counter_election_timer();
 659             purge_stonith_cleanup();
 660 
 661             if (pcmk_is_set(controld_globals.fsa_input_register, R_SHUTDOWN)) {
 662                 crm_info("(Re)Issuing shutdown request now" " that we have a new DC");
 663                 controld_set_fsa_action_flags(A_SHUTDOWN_REQ);
 664             }
 665             CRM_LOG_ASSERT(controld_globals.dc_name != NULL);
 666             if (controld_globals.dc_name == NULL) {
 667                 crm_err("Reached S_NOT_DC without a DC" " being recorded");
 668             }
 669             break;
 670 
 671         case S_RECOVERY:
 672             clear_recovery_bit = FALSE;
 673             break;
 674 
 675         case S_FINALIZE_JOIN:
 676             CRM_LOG_ASSERT(AM_I_DC);
 677             if (cause == C_TIMER_POPPED) {
 678                 crm_warn("Progressed to state %s after %s",
 679                          fsa_state2string(next_state), fsa_cause2string(cause));
 680             }
 681             count = crmd_join_phase_count(crm_join_welcomed);
 682             if (count > 0) {
 683                 crm_warn("%d cluster node%s failed to respond to join offer",
 684                          count, pcmk__plural_s(count));
 685                 crmd_join_phase_log(LOG_NOTICE);
 686 
 687             } else {
 688                 crm_debug("All cluster nodes (%d) responded to join offer",
 689                           crmd_join_phase_count(crm_join_integrated));
 690             }
 691             break;
 692 
 693         case S_POLICY_ENGINE:
 694             controld_reset_counter_election_timer();
 695             CRM_LOG_ASSERT(AM_I_DC);
 696             if (cause == C_TIMER_POPPED) {
 697                 crm_info("Progressed to state %s after %s",
 698                          fsa_state2string(next_state), fsa_cause2string(cause));
 699             }
 700             check_join_counts(msg_data);
 701             break;
 702 
 703         case S_STOPPING:
 704         case S_TERMINATE:
 705             /* possibly redundant */
 706             controld_set_fsa_input_flags(R_SHUTDOWN);
 707             break;
 708 
 709         case S_IDLE:
 710             CRM_LOG_ASSERT(AM_I_DC);
 711             if (pcmk_is_set(controld_globals.fsa_input_register, R_SHUTDOWN)) {
 712                 crm_info("(Re)Issuing shutdown request now" " that we are the DC");
 713                 controld_set_fsa_action_flags(A_SHUTDOWN_REQ);
 714             }
 715             controld_start_recheck_timer();
 716             break;
 717 
 718         default:
 719             break;
 720     }
 721 
 722     if (clear_recovery_bit && next_state != S_PENDING) {
 723         controld_clear_fsa_action_flags(A_RECOVER);
 724     } else if (clear_recovery_bit == FALSE) {
 725         controld_set_fsa_action_flags(A_RECOVER);
 726     }
 727 
 728 #if 0
 729     if (original_fsa_actions != controld_globals.fsa_actions) {
 730         fsa_dump_actions(original_fsa_actions ^ controld_globals.fsa_actions,
 731                          "New actions");
 732     }
 733 #endif
 734 }
/* */
root/daemons/controld/controld_fsa.c

DEFINITIONS
