root/daemons/controld/controld_fsa.h

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   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 #ifndef CRMD_FSA__H
  11 #  define CRMD_FSA__H
  12 
  13 #  include <crm/crm.h>
  14 #  include <crm/cib.h>
  15 #  include <crm/common/xml.h>
  16 #  include <crm/common/mainloop.h>
  17 #  include <crm/cluster.h>
  18 #  include <crm/cluster/election.h>
  19 #  include <crm/common/ipc_internal.h>
  20 
  21 /*! States the controller can be in */
  22 enum crmd_fsa_state {
  23     S_IDLE = 0,                 /* Nothing happening */
  24 
  25     S_ELECTION,                 /* Take part in the election algorithm as
  26                                  * described below
  27                                  */
  28     S_INTEGRATION,              /* integrate that status of new nodes (which is
  29                                  * all of them if we have just been elected DC)
  30                                  * to form a complete and up-to-date picture of
  31                                  * the CIB
  32                                  */
  33     S_FINALIZE_JOIN,            /* integrate that status of new nodes (which is
  34                                  * all of them if we have just been elected DC)
  35                                  * to form a complete and up-to-date picture of
  36                                  * the CIB
  37                                  */
  38     S_NOT_DC,                   /* we are in non-DC mode */
  39     S_POLICY_ENGINE,            /* Determine next stable state of the cluster */
  40     S_RECOVERY,                 /* Something bad happened, check everything is ok
  41                                  * before continuing and attempt to recover if
  42                                  * required
  43                                  */
  44     S_RELEASE_DC,               /* we were the DC, but now we arent anymore,
  45                                  * possibly by our own request, and we should
  46                                  * release all unnecessary sub-systems, finish
  47                                  * any pending actions, do general cleanup and
  48                                  * unset anything that makes us think we are
  49                                  * special :)
  50                                  */
  51     S_STARTING,                 /* we are just starting out */
  52     S_PENDING,                  /* we are not a full/active member yet */
  53     S_STOPPING,                 /* We are in the final stages of shutting down */
  54     S_TERMINATE,                /* We are going to shutdown, this is the equiv of
  55                                  * "Sending TERM signal to all processes" in Linux
  56                                  * and in worst case scenarios could be considered
  57                                  * a self STONITH
  58                                  */
  59     S_TRANSITION_ENGINE,        /* Attempt to make the calculated next stable
  60                                  * state of the cluster a reality
  61                                  */
  62 
  63     S_HALT,                     /* Freeze - don't do anything
  64                                  * Something bad happened that needs the admin to fix
  65                                  * Wait for I_ELECTION
  66                                  */
  67 
  68     /*  ----------- Last input found in table is above ---------- */
  69     S_ILLEGAL                   /* This is an illegal FSA state */
  70         /* (must be last) */
  71 };
  72 
  73 #  define MAXSTATE S_ILLEGAL
  74 
  75 /*
  76       Once we start and do some basic sanity checks, we go into the
  77       S_NOT_DC state and await instructions from the DC or input from
  78       the cluster layer which indicates the election algorithm needs to run.
  79 
  80       If the election algorithm is triggered, we enter the S_ELECTION state
  81       from where we can either go back to the S_NOT_DC state or progress
  82       to the S_INTEGRATION state (or S_RELEASE_DC if we used to be the DC
  83       but aren't anymore). See the libcrmcluster API documentation for more
  84       information about the election algorithm.
  85 
  86       Once the election is complete, if we are the DC, we enter the
  87       S_INTEGRATION state which is a DC-in-waiting style state.  We are
  88       the DC, but we shouldn't do anything yet because we may not have an
  89       up-to-date picture of the cluster.  There may of course be times
  90       when this fails, so we should go back to the S_RECOVERY stage and
  91       check everything is ok.  We may also end up here if a new node came
  92       online, since each node is authoritative about itself, and we would want
  93       to incorporate its information into the CIB.
  94 
  95       Once we have the latest CIB, we then enter the S_POLICY_ENGINE state
  96       where invoke the scheduler. It is possible that between
  97       invoking the scheduler and receiving an answer, that we receive
  98       more input. In this case, we would discard the orginal result and
  99       invoke it again.
 100 
 101       Once we are satisfied with the output from the scheduler, we
 102       enter S_TRANSITION_ENGINE and feed the scheduler's output to the
 103       Transition Engine who attempts to make the scheduler's
 104       calculation a reality. If the transition completes successfully,
 105       we enter S_IDLE, otherwise we go back to S_POLICY_ENGINE with the
 106       current unstable state and try again.
 107 
 108       Of course, we may be asked to shutdown at any time, however we must
 109       progress to S_NOT_DC before doing so.  Once we have handed over DC
 110       duties to another node, we can then shut down like everyone else,
 111       that is, by asking the DC for permission and waiting for it to take all
 112       our resources away.
 113 
 114       The case where we are the DC and the only node in the cluster is a
 115       special case and handled as an escalation which takes us to
 116       S_SHUTDOWN. Similarly, if any other point in the shutdown
 117       fails or stalls, this is escalated and we end up in S_TERMINATE.
 118 
 119       At any point, the controller can relay messages for its subsystems,
 120       but outbound messages (from subsystems) should probably be blocked
 121       until S_INTEGRATION (for the DC) or the join protocol has
 122       completed (for non-DC controllers).
 123 */
 124 
 125 /*======================================
 126  *
 127  *  Inputs/Events/Stimuli to be given to the finite state machine
 128  *
 129  *  Some of these a true events, and others are synthesised based on
 130  *  the "register" (see below) and the contents or source of messages.
 131  *
 132  *  The machine keeps processing until receiving I_NULL
 133  *
 134  *======================================*/
 135 enum crmd_fsa_input {
 136 /* 0 */
 137     I_NULL,                     /* Nothing happened */
 138 /* 1 */
 139 
 140     I_CIB_OP,                   /* An update to the CIB occurred */
 141     I_CIB_UPDATE,               /* An update to the CIB occurred */
 142     I_DC_TIMEOUT,               /* We have lost communication with the DC */
 143     I_ELECTION,                 /* Someone started an election */
 144     I_PE_CALC,                  /* The scheduler needs to be invoked */
 145     I_RELEASE_DC,               /* The election completed and we were not
 146                                  * elected, but we were the DC beforehand
 147                                  */
 148     I_ELECTION_DC,              /* The election completed and we were (re-)elected
 149                                  * DC
 150                                  */
 151     I_ERROR,                    /* Something bad happened (more serious than
 152                                  * I_FAIL) and may not have been due to the action
 153                                  * being performed.  For example, we may have lost
 154                                  * our connection to the CIB.
 155                                  */
 156 /* 9 */
 157     I_FAIL,                     /* The action failed to complete successfully */
 158     I_INTEGRATED,
 159     I_FINALIZED,
 160     I_NODE_JOIN,                /* A node has entered the cluster */
 161     I_NOT_DC,                   /* We are not and were not the DC before or after
 162                                  * the current operation or state
 163                                  */
 164     I_RECOVERED,                /* The recovery process completed successfully */
 165     I_RELEASE_FAIL,             /* We could not give up DC status for some reason
 166                                  */
 167     I_RELEASE_SUCCESS,          /* We are no longer the DC */
 168     I_RESTART,                  /* The current set of actions needs to be
 169                                  * restarted
 170                                  */
 171     I_TE_SUCCESS,               /* Some non-resource, non-cluster-layer action
 172                                  * is required of us, e.g. ping
 173                                  */
 174 /* 20 */
 175     I_ROUTER,                   /* Do our job as router and forward this to the
 176                                  * right place
 177                                  */
 178     I_SHUTDOWN,                 /* We are asking to shutdown */
 179     I_STOP,                     /* We have been told to shutdown */
 180     I_TERMINATE,                /* Actually exit */
 181     I_STARTUP,
 182     I_PE_SUCCESS,               /* The action completed successfully */
 183 
 184     I_JOIN_OFFER,               /* The DC is offering membership */
 185     I_JOIN_REQUEST,             /* The client is requesting membership */
 186     I_JOIN_RESULT,              /* If not the DC: The result of a join request
 187                                  * Else: A client is responding with its local state info
 188                                  */
 189 
 190     I_WAIT_FOR_EVENT,           /* we may be waiting for an async task to "happen"
 191                                  * and until it does, we can't do anything else
 192                                  */
 193 
 194     I_DC_HEARTBEAT,             /* The DC is telling us that it is alive and well */
 195 
 196     I_LRM_EVENT,
 197 
 198 /* 30 */
 199     I_PENDING,
 200     I_HALT,
 201 
 202     /*  ------------ Last input found in table is above ----------- */
 203     I_ILLEGAL                   /* This is an illegal value for an FSA input */
 204         /* (must be last) */
 205 };
 206 
 207 #  define MAXINPUT  I_ILLEGAL
 208 
 209 #  define I_MESSAGE I_ROUTER
 210 
 211 /*======================================
 212  *
 213  * actions
 214  *
 215  * Some of the actions below will always occur together for now, but this may
 216  * not always be the case, so they are split up so that they can easily be
 217  * called independently in the future, if necessary.
 218  *
 219  * For example, separating A_LRM_CONNECT from A_STARTUP might be useful
 220  * if we ever try to recover from a faulty or disconnected executor.
 221  *
 222  *======================================*/
 223 
 224          /* Don't do anything */
 225 #  define A_NOTHING                 0x0000000000000000ULL
 226 
 227 /* -- Startup actions -- */
 228         /* Hook to perform any actions (other than connecting to other daemons)
 229          * that might be needed as part of the startup.
 230          */
 231 #  define A_STARTUP                 0x0000000000000001ULL
 232         /* Hook to perform any actions that might be needed as part
 233          * after startup is successful.
 234          */
 235 #  define A_STARTED                 0x0000000000000002ULL
 236         /* Connect to cluster layer */
 237 #  define A_HA_CONNECT              0x0000000000000004ULL
 238 #  define A_HA_DISCONNECT           0x0000000000000008ULL
 239 
 240 #  define A_INTEGRATE_TIMER_START   0x0000000000000010ULL
 241 #  define A_INTEGRATE_TIMER_STOP    0x0000000000000020ULL
 242 #  define A_FINALIZE_TIMER_START    0x0000000000000040ULL
 243 #  define A_FINALIZE_TIMER_STOP     0x0000000000000080ULL
 244 
 245 /* -- Election actions -- */
 246 #  define A_DC_TIMER_START          0x0000000000000100ULL
 247 #  define A_DC_TIMER_STOP           0x0000000000000200ULL
 248 #  define A_ELECTION_COUNT          0x0000000000000400ULL
 249 #  define A_ELECTION_VOTE           0x0000000000000800ULL
 250 
 251 #  define A_ELECTION_START          0x0000000000001000ULL
 252 
 253 /* -- Message processing -- */
 254         /* Process the queue of requests */
 255 #  define A_MSG_PROCESS             0x0000000000002000ULL
 256         /* Send the message to the correct recipient */
 257 #  define A_MSG_ROUTE               0x0000000000004000ULL
 258 
 259         /* Send a welcome message to new node(s) */
 260 #  define A_DC_JOIN_OFFER_ONE       0x0000000000008000ULL
 261 
 262 /* -- Server Join protocol actions -- */
 263         /* Send a welcome message to all nodes */
 264 #  define A_DC_JOIN_OFFER_ALL       0x0000000000010000ULL
 265         /* Process the remote node's ack of our join message */
 266 #  define A_DC_JOIN_PROCESS_REQ     0x0000000000020000ULL
 267         /* Send out the results of the Join phase */
 268 #  define A_DC_JOIN_FINALIZE        0x0000000000040000ULL
 269         /* Send out the results of the Join phase */
 270 #  define A_DC_JOIN_PROCESS_ACK     0x0000000000080000ULL
 271 
 272 /* -- Client Join protocol actions -- */
 273 #  define A_CL_JOIN_QUERY           0x0000000000100000ULL
 274 #  define A_CL_JOIN_ANNOUNCE        0x0000000000200000ULL
 275         /* Request membership to the DC list */
 276 #  define A_CL_JOIN_REQUEST         0x0000000000400000ULL
 277         /* Did the DC accept or reject the request */
 278 #  define A_CL_JOIN_RESULT          0x0000000000800000ULL
 279 
 280 /* -- Recovery, DC start/stop -- */
 281         /* Something bad happened, try to recover */
 282 #  define A_RECOVER                 0x0000000001000000ULL
 283         /* Hook to perform any actions (apart from starting, the TE, scheduler,
 284          * and gathering the latest CIB) that might be necessary before
 285          * giving up the responsibilities of being the DC.
 286          */
 287 #  define A_DC_RELEASE              0x0000000002000000ULL
 288         /* */
 289 #  define A_DC_RELEASED             0x0000000004000000ULL
 290         /* Hook to perform any actions (apart from starting, the TE, scheduler,
 291          * and gathering the latest CIB) that might be necessary before
 292          * taking over the responsibilities of being the DC.
 293          */
 294 #  define A_DC_TAKEOVER             0x0000000008000000ULL
 295 
 296 /* -- Shutdown actions -- */
 297 #  define A_SHUTDOWN                0x0000000010000000ULL
 298 #  define A_STOP                    0x0000000020000000ULL
 299 #  define A_EXIT_0                  0x0000000040000000ULL
 300 #  define A_EXIT_1                  0x0000000080000000ULL
 301 
 302 #  define A_SHUTDOWN_REQ            0x0000000100000000ULL
 303 #  define A_ELECTION_CHECK          0x0000000200000000ULL
 304 #  define A_DC_JOIN_FINAL           0x0000000400000000ULL
 305 
 306 /* -- CIB actions -- */
 307 #  define A_CIB_START               0x0000020000000000ULL
 308 #  define A_CIB_STOP                0x0000040000000000ULL
 309 
 310 /* -- Transition Engine actions -- */
 311         /* Attempt to reach the newly calculated cluster state. This is
 312          * only called once per transition (except if it is asked to
 313          * stop the transition or start a new one).
 314          * Once given a cluster state to reach, the TE will determine
 315          * tasks that can be performed in parallel, execute them, wait
 316          * for replies and then determine the next set until the new
 317          * state is reached or no further tasks can be taken.
 318          */
 319 #  define A_TE_INVOKE               0x0000100000000000ULL
 320 #  define A_TE_START                0x0000200000000000ULL
 321 #  define A_TE_STOP                 0x0000400000000000ULL
 322 #  define A_TE_CANCEL               0x0000800000000000ULL
 323 #  define A_TE_HALT                 0x0001000000000000ULL
 324 
 325 /* -- Scheduler actions -- */
 326         /* Calculate the next state for the cluster.  This is only
 327          * invoked once per needed calculation.
 328          */
 329 #  define A_PE_INVOKE               0x0002000000000000ULL
 330 #  define A_PE_START                0x0004000000000000ULL
 331 #  define A_PE_STOP                 0x0008000000000000ULL
 332 /* -- Misc actions -- */
 333         /* Add a system generate "block" so that resources arent moved
 334          * to or are activly moved away from the affected node.  This
 335          * way we can return quickly even if busy with other things.
 336          */
 337 #  define A_NODE_BLOCK              0x0010000000000000ULL
 338         /* Update our information in the local CIB */
 339 #  define A_UPDATE_NODESTATUS       0x0020000000000000ULL
 340 #  define A_READCONFIG              0x0080000000000000ULL
 341 
 342 /* -- LRM Actions -- */
 343         /* Connect to pacemaker-execd */
 344 #  define A_LRM_CONNECT             0x0100000000000000ULL
 345         /* Disconnect from pacemaker-execd */
 346 #  define A_LRM_DISCONNECT          0x0200000000000000ULL
 347 #  define A_LRM_INVOKE              0x0400000000000000ULL
 348 #  define A_LRM_EVENT               0x0800000000000000ULL
 349 
 350 /* -- Logging actions -- */
 351 #  define A_LOG                     0x1000000000000000ULL
 352 #  define A_ERROR                   0x2000000000000000ULL
 353 #  define A_WARN                    0x4000000000000000ULL
 354 
 355 #  define O_EXIT                (A_SHUTDOWN|A_STOP|A_LRM_DISCONNECT|A_HA_DISCONNECT|A_EXIT_0|A_CIB_STOP)
 356 #  define O_RELEASE             (A_DC_TIMER_STOP|A_DC_RELEASE|A_PE_STOP|A_TE_STOP|A_DC_RELEASED)
 357 #  define O_PE_RESTART          (A_PE_START|A_PE_STOP)
 358 #  define O_TE_RESTART          (A_TE_START|A_TE_STOP)
 359 #  define O_CIB_RESTART         (A_CIB_START|A_CIB_STOP)
 360 #  define O_LRM_RECONNECT       (A_LRM_CONNECT|A_LRM_DISCONNECT)
 361 #  define O_DC_TIMER_RESTART    (A_DC_TIMER_STOP|A_DC_TIMER_START)
 362 /*======================================
 363  *
 364  * "register" contents
 365  *
 366  * Things we may want to remember regardless of which state we are in.
 367  *
 368  * These also count as inputs for synthesizing I_*
 369  *
 370  *======================================*/
 371 #  define R_THE_DC          0x00000001ULL
 372                                         /* Are we the DC? */
 373 #  define R_STARTING        0x00000002ULL
 374                                         /* Are we starting up? */
 375 #  define R_SHUTDOWN        0x00000004ULL
 376                                         /* Are we trying to shut down? */
 377 #  define R_STAYDOWN        0x00000008ULL
 378                                         /* Should we restart? */
 379 
 380 #  define R_JOIN_OK         0x00000010ULL   /* Have we completed the join process */
 381 #  define R_READ_CONFIG     0x00000040ULL
 382 #  define R_INVOKE_PE       0x00000080ULL   // Should the scheduler be invoked?
 383 
 384 #  define R_CIB_CONNECTED   0x00000100ULL
 385                                         /* Is the CIB connected? */
 386 #  define R_PE_CONNECTED    0x00000200ULL   // Is the scheduler connected?
 387 #  define R_TE_CONNECTED    0x00000400ULL
 388                                         /* Is the Transition Engine connected? */
 389 #  define R_LRM_CONNECTED   0x00000800ULL   // Is pacemaker-execd connected?
 390 
 391 #  define R_CIB_REQUIRED    0x00001000ULL
 392                                         /* Is the CIB required? */
 393 #  define R_PE_REQUIRED     0x00002000ULL   // Is the scheduler required?
 394 #  define R_TE_REQUIRED     0x00004000ULL
 395                                         /* Is the Transition Engine required? */
 396 #  define R_ST_REQUIRED     0x00008000ULL
 397                                         /* Is the Stonith daemon required? */
 398 
 399 #  define R_CIB_DONE        0x00010000ULL
 400                                         /* Have we calculated the CIB? */
 401 #  define R_HAVE_CIB        0x00020000ULL   /* Do we have an up-to-date CIB */
 402 #  define R_CIB_ASKED       0x00040000ULL   /* Have we asked for an up-to-date CIB */
 403 
 404 #  define R_MEMBERSHIP      0x00100000ULL   /* Have we got cluster layer data yet */
 405 #  define R_PEER_DATA       0x00200000ULL   /* Have we got T_CL_STATUS data yet */
 406 
 407 #  define R_HA_DISCONNECTED 0x00400000ULL      /* did we sign out of our own accord */
 408 
 409 #  define R_REQ_PEND        0x01000000ULL
 410                                         /* Are there Requests waiting for
 411                                            processing? */
 412 #  define R_PE_PEND         0x02000000ULL   // Are we awaiting reply from scheduler?
 413 #  define R_TE_PEND         0x04000000ULL
 414                                         /* Has the TE been invoked and we're
 415                                            awaiting completion? */
 416 #  define R_RESP_PEND       0x08000000ULL
 417                                         /* Do we have clients waiting on a
 418                                            response? if so perhaps we shouldn't
 419                                            stop yet */
 420 
 421 #  define R_IN_TRANSITION   0x10000000ULL
 422                                         /*  */
 423 #  define R_SENT_RSC_STOP   0x20000000ULL /* Have we sent a stop action to all
 424                                          * resources in preparation for
 425                                          * shutting down */
 426 
 427 #  define R_IN_RECOVERY     0x80000000ULL
 428 
 429 #define CRM_DIRECT_NACK_RC (99) // Deprecated (see PCMK_LRM_OP_INVALID)
 430 
 431 enum crmd_fsa_cause {
 432     C_UNKNOWN = 0,
 433     C_STARTUP,
 434     C_IPC_MESSAGE,
 435     C_HA_MESSAGE,
 436     C_CRMD_STATUS_CALLBACK,
 437     C_LRM_OP_CALLBACK,
 438     C_TIMER_POPPED,
 439     C_SHUTDOWN,
 440     C_FSA_INTERNAL,
 441 };
 442 
 443 enum fsa_data_type {
 444     fsa_dt_none,
 445     fsa_dt_ha_msg,
 446     fsa_dt_xml,
 447     fsa_dt_lrm,
 448 };
 449 
 450 typedef struct fsa_data_s fsa_data_t;
 451 struct fsa_data_s {
 452     int id;
 453     enum crmd_fsa_input fsa_input;
 454     enum crmd_fsa_cause fsa_cause;
 455     uint64_t actions;
 456     const char *origin;
 457     void *data;
 458     enum fsa_data_type data_type;
 459 };
 460 
 461 /* Global FSA stuff */
 462 extern gboolean do_fsa_stall;
 463 extern enum crmd_fsa_state fsa_state;
 464 extern uint64_t fsa_input_register;
 465 extern uint64_t fsa_actions;
 466 
 467 #define controld_set_fsa_input_flags(flags_to_set) do {                     \
 468         fsa_input_register = pcmk__set_flags_as(__func__, __LINE__,         \
 469                                                 LOG_TRACE,                  \
 470                                                 "FSA input", "controller",  \
 471                                                 fsa_input_register,         \
 472                                                 (flags_to_set),             \
 473                                                 #flags_to_set);             \
 474     } while (0)
 475 
 476 #define controld_clear_fsa_input_flags(flags_to_clear) do {                 \
 477         fsa_input_register = pcmk__clear_flags_as(__func__, __LINE__,       \
 478                                                   LOG_TRACE,                \
 479                                                   "FSA input", "controller",\
 480                                                   fsa_input_register,       \
 481                                                   (flags_to_clear),         \
 482                                                   #flags_to_clear);         \
 483     } while (0)
 484 
 485 #define controld_set_fsa_action_flags(flags_to_set) do {                    \
 486         fsa_actions = pcmk__set_flags_as(__func__, __LINE__,                \
 487                                          LOG_DEBUG,                         \
 488                                          "FSA action", "controller",        \
 489                                          fsa_actions, (flags_to_set),       \
 490                                          #flags_to_set);                    \
 491     } while (0)
 492 
 493 #define controld_clear_fsa_action_flags(flags_to_clear) do {                \
 494         fsa_actions = pcmk__clear_flags_as(__func__, __LINE__,              \
 495                                            LOG_DEBUG,                       \
 496                                            "FSA action", "controller",      \
 497                                            fsa_actions, (flags_to_clear),   \
 498                                            #flags_to_clear);                \
 499     } while (0)
 500 
 501 extern cib_t *fsa_cib_conn;
 502 
 503 extern char *fsa_our_uname;
 504 extern char *fsa_our_uuid;
 505 extern char *fsa_pe_ref;        // Last invocation of the scheduler
 506 extern char *fsa_our_dc;
 507 extern char *fsa_our_dc_version;
 508 extern GListPtr fsa_message_queue;
 509 
 510 extern char *fsa_cluster_name;
 511 
 512 extern crm_trigger_t *fsa_source;
 513 extern crm_trigger_t *config_read;
 514 
 515 extern unsigned long long saved_ccm_membership_id;
 516 extern gboolean ever_had_quorum;
 517 
 518 // These should be moved elsewhere
 519 void do_update_cib_nodes(gboolean overwrite, const char *caller);
 520 int crmd_cib_smart_opt(void);
 521 xmlNode *controld_query_executor_state(const char *node_name);
 522 
 523 const char *fsa_input2string(enum crmd_fsa_input input);
 524 const char *fsa_state2string(enum crmd_fsa_state state);
 525 const char *fsa_cause2string(enum crmd_fsa_cause cause);
 526 const char *fsa_action2string(long long action);
 527 
 528 enum crmd_fsa_state s_crmd_fsa(enum crmd_fsa_cause cause);
 529 
 530 #  define AM_I_DC pcmk_is_set(fsa_input_register, R_THE_DC)
 531 #  define AM_I_OPERATIONAL !pcmk_is_set(fsa_input_register, R_STARTING)
 532 #  define trigger_fsa() do {                    \
 533         if (fsa_source != NULL) {               \
 534             crm_trace("Triggering FSA");        \
 535             mainloop_set_trigger(fsa_source);   \
 536         }                                       \
 537     } while(0)
 538 
 539 /* A_READCONFIG */
 540 void do_read_config(long long action, enum crmd_fsa_cause cause,
 541                     enum crmd_fsa_state cur_state,
 542                     enum crmd_fsa_input current_input, fsa_data_t *msg_data);
 543 
 544 /* A_PE_INVOKE */
 545 void do_pe_invoke(long long action, enum crmd_fsa_cause cause,
 546                   enum crmd_fsa_state cur_state,
 547                   enum crmd_fsa_input current_input, fsa_data_t *msg_data);
 548 
 549 /* A_LOG */
 550 void do_log(long long action, enum crmd_fsa_cause cause,
 551             enum crmd_fsa_state cur_state,
 552             enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 553 
 554 /* A_STARTUP */
 555 void do_startup(long long action, enum crmd_fsa_cause cause,
 556                 enum crmd_fsa_state cur_state,
 557                 enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 558 
 559 /* A_CIB_START, STOP, RESTART */
 560 void do_cib_control(long long action, enum crmd_fsa_cause cause,
 561                     enum crmd_fsa_state cur_state,
 562                     enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 563 
 564 /* A_HA_CONNECT */
 565 void do_ha_control(long long action, enum crmd_fsa_cause cause,
 566                    enum crmd_fsa_state cur_state,
 567                    enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 568 
 569 /* A_LRM_CONNECT */
 570 void do_lrm_control(long long action, enum crmd_fsa_cause cause,
 571                     enum crmd_fsa_state cur_state,
 572                     enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 573 
 574 /* A_PE_START, STOP, RESTART */
 575 void do_pe_control(long long action, enum crmd_fsa_cause cause,
 576                    enum crmd_fsa_state cur_state,
 577                    enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 578 
 579 /* A_TE_START, STOP, RESTART */
 580 void do_te_control(long long action, enum crmd_fsa_cause cause,
 581                    enum crmd_fsa_state cur_state,
 582                    enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 583 
 584 /* A_STARTED */
 585 void do_started(long long action, enum crmd_fsa_cause cause,
 586                 enum crmd_fsa_state cur_state,
 587                 enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 588 
 589 /* A_MSG_ROUTE */
 590 void do_msg_route(long long action, enum crmd_fsa_cause cause,
 591                   enum crmd_fsa_state cur_state,
 592                   enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 593 
 594 /* A_RECOVER */
 595 void do_recover(long long action, enum crmd_fsa_cause cause,
 596                 enum crmd_fsa_state cur_state,
 597                 enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 598 
 599 /* A_ELECTION_VOTE */
 600 void do_election_vote(long long action, enum crmd_fsa_cause cause,
 601                       enum crmd_fsa_state cur_state,
 602                       enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 603 
 604 /* A_ELECTION_COUNT */
 605 void do_election_count_vote(long long action, enum crmd_fsa_cause cause,
 606                             enum crmd_fsa_state cur_state,
 607                             enum crmd_fsa_input cur_input,
 608                             fsa_data_t *msg_data);
 609 
 610 /* A_ELECTION_CHECK */
 611 void do_election_check(long long action, enum crmd_fsa_cause cause,
 612                        enum crmd_fsa_state cur_state,
 613                        enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 614 
 615 /* A_DC_TIMER_STOP */
 616 void do_timer_control(long long action, enum crmd_fsa_cause cause,
 617                       enum crmd_fsa_state cur_state,
 618                       enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 619 
 620 /* A_DC_TAKEOVER */
 621 void do_dc_takeover(long long action, enum crmd_fsa_cause cause,
 622                     enum crmd_fsa_state cur_state,
 623                     enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 624 
 625 /* A_DC_RELEASE */
 626 void do_dc_release(long long action, enum crmd_fsa_cause cause,
 627                    enum crmd_fsa_state cur_state,
 628                    enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 629 
 630 /* A_DC_JOIN_OFFER_ALL */
 631 void do_dc_join_offer_all(long long action, enum crmd_fsa_cause cause,
 632                           enum crmd_fsa_state cur_state,
 633                           enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 634 
 635 /* A_DC_JOIN_OFFER_ONE */
 636 void do_dc_join_offer_one(long long action, enum crmd_fsa_cause cause,
 637                           enum crmd_fsa_state cur_state,
 638                           enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 639 
 640 /* A_DC_JOIN_ACK */
 641 void do_dc_join_ack(long long action, enum crmd_fsa_cause cause,
 642                     enum crmd_fsa_state cur_state,
 643                     enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 644 
 645 /* A_DC_JOIN_REQ */
 646 void do_dc_join_filter_offer(long long action, enum crmd_fsa_cause cause,
 647                              enum crmd_fsa_state cur_state,
 648                              enum crmd_fsa_input cur_input,
 649                              fsa_data_t *msg_data);
 650 
 651 /* A_DC_JOIN_FINALIZE */
 652 void do_dc_join_finalize(long long action, enum crmd_fsa_cause cause,
 653                          enum crmd_fsa_state cur_state,
 654                          enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 655 
 656 /* A_CL_JOIN_QUERY */
 657 /* is there a DC out there? */
 658 void do_cl_join_query(long long action, enum crmd_fsa_cause cause,
 659                       enum crmd_fsa_state cur_state,
 660                       enum crmd_fsa_input current_input, fsa_data_t *msg_data);
 661 
 662 /* A_CL_JOIN_ANNOUNCE */
 663 void do_cl_join_announce(long long action, enum crmd_fsa_cause cause,
 664                          enum crmd_fsa_state cur_state,
 665                          enum crmd_fsa_input current_input, fsa_data_t *msg_data);
 666 
 667 /* A_CL_JOIN_REQUEST */
 668 void do_cl_join_offer_respond(long long action, enum crmd_fsa_cause cause,
 669                               enum crmd_fsa_state cur_state,
 670                               enum crmd_fsa_input current_input,
 671                               fsa_data_t *msg_data);
 672 
 673 /* A_CL_JOIN_RESULT */
 674 void do_cl_join_finalize_respond(long long action, enum crmd_fsa_cause cause,
 675                                  enum crmd_fsa_state cur_state,
 676                                  enum crmd_fsa_input current_input,
 677                                  fsa_data_t *msg_data);
 678 
 679 /* A_LRM_INVOKE */
 680 void do_lrm_invoke(long long action, enum crmd_fsa_cause cause,
 681                    enum crmd_fsa_state cur_state,
 682                    enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 683 
 684 /* A_LRM_EVENT */
 685 void do_lrm_event(long long action, enum crmd_fsa_cause cause,
 686                   enum crmd_fsa_state cur_state,
 687                   enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 688 
 689 /* A_TE_INVOKE, A_TE_CANCEL */
 690 void do_te_invoke(long long action, enum crmd_fsa_cause cause,
 691                   enum crmd_fsa_state cur_state,
 692                   enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 693 
 694 /* A_SHUTDOWN_REQ */
 695 void do_shutdown_req(long long action, enum crmd_fsa_cause cause,
 696                      enum crmd_fsa_state cur_state,
 697                      enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 698 
 699 /* A_SHUTDOWN */
 700 void do_shutdown(long long action, enum crmd_fsa_cause cause,
 701                  enum crmd_fsa_state cur_state,
 702                  enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 703 
 704 /* A_STOP */
 705 void do_stop(long long action, enum crmd_fsa_cause cause,
 706              enum crmd_fsa_state cur_state,
 707              enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 708 
 709 /* A_EXIT_0, A_EXIT_1 */
 710 void do_exit(long long action, enum crmd_fsa_cause cause,
 711              enum crmd_fsa_state cur_state,
 712              enum crmd_fsa_input cur_input, fsa_data_t *msg_data);
 713 
 714 /* A_DC_JOIN_FINAL */
 715 void do_dc_join_final(long long action, enum crmd_fsa_cause cause,
 716                       enum crmd_fsa_state cur_state,
 717                       enum crmd_fsa_input current_input, fsa_data_t *msg_data);
 718 #endif

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