ovsdb/ovsdb-server.c

   1 /* Copyright (c) 2009, 2010, 2011 Nicira Networks
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #include <config.h>
  17
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <signal.h>
  22 #include <unistd.h>
  23
  24 #include "column.h"
  25 #include "command-line.h"
  26 #include "daemon.h"
  27 #include "dirs.h"
  28 #include "file.h"
  29 #include "hash.h"
  30 #include "json.h"
  31 #include "jsonrpc.h"
  32 #include "jsonrpc-server.h"
  33 #include "leak-checker.h"
  34 #include "list.h"
  35 #include "ovsdb.h"
  36 #include "ovsdb-data.h"
  37 #include "ovsdb-types.h"
  38 #include "ovsdb-error.h"
  39 #include "poll-loop.h"
  40 #include "process.h"
  41 #include "row.h"
  42 #include "stream-ssl.h"
  43 #include "stream.h"
  44 #include "stress.h"
  45 #include "sset.h"
  46 #include "table.h"
  47 #include "timeval.h"
  48 #include "transaction.h"
  49 #include "trigger.h"
  50 #include "util.h"
  51 #include "unixctl.h"
  52 #include "vlog.h"
  53
  54 VLOG_DEFINE_THIS_MODULE(ovsdb_server);
  55
  56 /* SSL configuration. */
  57 static char *private_key_file;
  58 static char *certificate_file;
  59 static char *ca_cert_file;
  60 static bool bootstrap_ca_cert;
  61
  62 static unixctl_cb_func ovsdb_server_exit;
  63 static unixctl_cb_func ovsdb_server_compact;
  64 static unixctl_cb_func ovsdb_server_reconnect;
  65
  66 static void parse_options(int argc, char *argv[], char **file_namep,
  67                           struct sset *remotes, char **unixctl_pathp,
  68                           char **run_command);
  69 static void usage(void) NO_RETURN;
  70
  71 static void reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
  72                                 const struct ovsdb *db, struct sset *remotes);
  73
  74 static void update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
  75                                  const struct sset *remotes,
  76                                  struct ovsdb *db);
  77
  78 int
  79 main(int argc, char *argv[])
  80 {
  81     char *unixctl_path = NULL;
  82     char *run_command = NULL;
  83     struct unixctl_server *unixctl;
  84     struct ovsdb_jsonrpc_server *jsonrpc;
  85     struct sset remotes;
  86     struct ovsdb_error *error;
  87     struct ovsdb_file *file;
  88     struct ovsdb *db;
  89     struct process *run_process;
  90     char *file_name;
  91     bool exiting;
  92     int retval;
  93     long long int status_timer = LLONG_MIN;
  94
  95     proctitle_init(argc, argv);
  96     set_program_name(argv[0]);
  97     stress_init_command();
  98     signal(SIGPIPE, SIG_IGN);
  99     process_init();
 100
 101     parse_options(argc, argv, &file_name, &remotes, &unixctl_path,
 102                   &run_command);
 103
 104     daemonize_start();
 105
 106     error = ovsdb_file_open(file_name, false, &db, &file);
 107     if (error) {
 108         ovs_fatal(0, "%s", ovsdb_error_to_string(error));
 109     }
 110     free(file_name);
 111
 112     jsonrpc = ovsdb_jsonrpc_server_create(db);
 113     reconfigure_from_db(jsonrpc, db, &remotes);
 114
 115     retval = unixctl_server_create(unixctl_path, &unixctl);
 116     if (retval) {
 117         exit(EXIT_FAILURE);
 118     }
 119
 120     if (run_command) {
 121         char *run_argv[4];
 122
 123         run_argv[0] = "/bin/sh";
 124         run_argv[1] = "-c";
 125         run_argv[2] = run_command;
 126         run_argv[3] = NULL;
 127
 128         retval = process_start(run_argv, NULL, 0, NULL, 0, &run_process);
 129         if (retval) {
 130             ovs_fatal(retval, "%s: process failed to start", run_command);
 131         }
 132     } else {
 133         run_process = NULL;
 134     }
 135
 136     daemonize_complete();
 137
 138     unixctl_command_register("exit", ovsdb_server_exit, &exiting);
 139     unixctl_command_register("ovsdb-server/compact", ovsdb_server_compact,
 140                              file);
 141     unixctl_command_register("ovsdb-server/reconnect", ovsdb_server_reconnect,
 142                              jsonrpc);
 143
 144     exiting = false;
 145     while (!exiting) {
 146         reconfigure_from_db(jsonrpc, db, &remotes);
 147         ovsdb_jsonrpc_server_run(jsonrpc);
 148         unixctl_server_run(unixctl);
 149         ovsdb_trigger_run(db, time_msec());
 150         if (run_process && process_exited(run_process)) {
 151             exiting = true;
 152         }
 153
 154         /* update Manager status(es) every 5 seconds */
 155         if (time_msec() >= status_timer) {
 156             status_timer = time_msec() + 5000;
 157             update_remote_status(jsonrpc, &remotes, db);
 158         }
 159
 160         ovsdb_jsonrpc_server_wait(jsonrpc);
 161         unixctl_server_wait(unixctl);
 162         ovsdb_trigger_wait(db, time_msec());
 163         if (run_process) {
 164             process_wait(run_process);
 165         }
 166         if (exiting) {
 167             poll_immediate_wake();
 168         }
 169         poll_timer_wait_until(status_timer);
 170         poll_block();
 171     }
 172     ovsdb_jsonrpc_server_destroy(jsonrpc);
 173     ovsdb_destroy(db);
 174     sset_destroy(&remotes);
 175     unixctl_server_destroy(unixctl);
 176
 177     if (run_process && process_exited(run_process)) {
 178         int status = process_status(run_process);
 179         if (status) {
 180             ovs_fatal(0, "%s: child exited, %s",
 181                       run_command, process_status_msg(status));
 182         }
 183     }
 184
 185     return 0;
 186 }
 187
 188 static void
 189 parse_db_column(const struct ovsdb *db,
 190                 const char *name_,
 191                 const struct ovsdb_table **tablep,
 192                 const struct ovsdb_column **columnp)
 193 {
 194     char *name, *table_name, *column_name;
 195     const struct ovsdb_column *column;
 196     const struct ovsdb_table *table;
 197     char *save_ptr = NULL;
 198
 199     name = xstrdup(name_);
 200     strtok_r(name, ":", &save_ptr); /* "db:" */
 201     table_name = strtok_r(NULL, ",", &save_ptr);
 202     column_name = strtok_r(NULL, ",", &save_ptr);
 203     if (!table_name || !column_name) {
 204         ovs_fatal(0, "\"%s\": invalid syntax", name_);
 205     }
 206
 207     table = ovsdb_get_table(db, table_name);
 208     if (!table) {
 209         ovs_fatal(0, "\"%s\": no table named %s", name_, table_name);
 210     }
 211
 212     column = ovsdb_table_schema_get_column(table->schema, column_name);
 213     if (!column) {
 214         ovs_fatal(0, "\"%s\": table \"%s\" has no column \"%s\"",
 215                   name_, table_name, column_name);
 216     }
 217     free(name);
 218
 219     *columnp = column;
 220     *tablep = table;
 221 }
 222
 223 static void
 224 parse_db_string_column(const struct ovsdb *db,
 225                        const char *name,
 226                        const struct ovsdb_table **tablep,
 227                        const struct ovsdb_column **columnp)
 228 {
 229     const struct ovsdb_column *column;
 230     const struct ovsdb_table *table;
 231
 232     parse_db_column(db, name, &table, &column);
 233
 234     if (column->type.key.type != OVSDB_TYPE_STRING
 235         || column->type.value.type != OVSDB_TYPE_VOID) {
 236         ovs_fatal(0, "\"%s\": table \"%s\" column \"%s\" is "
 237                   "not string or set of strings",
 238                   name, table->schema->name, column->name);
 239     }
 240
 241     *columnp = column;
 242     *tablep = table;
 243 }
 244
 245 static OVS_UNUSED const char *
 246 query_db_string(const struct ovsdb *db, const char *name)
 247 {
 248     if (!name || strncmp(name, "db:", 3)) {
 249         return name;
 250     } else {
 251         const struct ovsdb_column *column;
 252         const struct ovsdb_table *table;
 253         const struct ovsdb_row *row;
 254
 255         parse_db_string_column(db, name, &table, &column);
 256
 257         HMAP_FOR_EACH (row, hmap_node, &table->rows) {
 258             const struct ovsdb_datum *datum;
 259             size_t i;
 260
 261             datum = &row->fields[column->index];
 262             for (i = 0; i < datum->n; i++) {
 263                 if (datum->keys[i].string[0]) {
 264                     return datum->keys[i].string;
 265                 }
 266             }
 267         }
 268         return NULL;
 269     }
 270 }
 271
 272 static struct ovsdb_jsonrpc_options *
 273 add_remote(struct shash *remotes, const char *target)
 274 {
 275     struct ovsdb_jsonrpc_options *options;
 276
 277     options = shash_find_data(remotes, target);
 278     if (!options) {
 279         options = ovsdb_jsonrpc_default_options();
 280         shash_add(remotes, target, options);
 281     }
 282
 283     return options;
 284 }
 285
 286 static struct ovsdb_datum *
 287 get_datum(struct ovsdb_row *row, const char *column_name,
 288           const enum ovsdb_atomic_type key_type,
 289           const enum ovsdb_atomic_type value_type,
 290           const size_t n_max)
 291 {
 292     static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
 293     const struct ovsdb_table_schema *schema = row->table->schema;
 294     const struct ovsdb_column *column;
 295
 296     column = ovsdb_table_schema_get_column(schema, column_name);
 297     if (!column) {
 298         VLOG_DBG_RL(&rl, "Table `%s' has no `%s' column",
 299                     schema->name, column_name);
 300         return NULL;
 301     }
 302
 303     if (column->type.key.type != key_type
 304         || column->type.value.type != value_type
 305         || column->type.n_max != n_max) {
 306         if (!VLOG_DROP_DBG(&rl)) {
 307             char *type_name = ovsdb_type_to_english(&column->type);
 308             VLOG_DBG("Table `%s' column `%s' has type %s, not expected "
 309                      "key type %s, value type %s, max elements %zd.",
 310                      schema->name, column_name, type_name,
 311                      ovsdb_atomic_type_to_string(key_type),
 312                      ovsdb_atomic_type_to_string(value_type),
 313                      n_max);
 314             free(type_name);
 315         }
 316         return NULL;
 317     }
 318
 319     return &row->fields[column->index];
 320 }
 321
 322 static const union ovsdb_atom *
 323 read_column(const struct ovsdb_row *row, const char *column_name,
 324             enum ovsdb_atomic_type type)
 325 {
 326     const struct ovsdb_datum *datum;
 327
 328     datum = get_datum((struct ovsdb_row *) row, column_name, type, OVSDB_TYPE_VOID, 1);
 329     return datum && datum->n ? datum->keys : NULL;
 330 }
 331
 332 static bool
 333 read_integer_column(const struct ovsdb_row *row, const char *column_name,
 334                     long long int *integerp)
 335 {
 336     const union ovsdb_atom *atom;
 337
 338     atom = read_column(row, column_name, OVSDB_TYPE_INTEGER);
 339     *integerp = atom ? atom->integer : 0;
 340     return atom != NULL;
 341 }
 342
 343 static bool
 344 read_string_column(const struct ovsdb_row *row, const char *column_name,
 345                    const char **stringp)
 346 {
 347     const union ovsdb_atom *atom;
 348
 349     atom = read_column(row, column_name, OVSDB_TYPE_STRING);
 350     *stringp = atom ? atom->string : NULL;
 351     return atom != NULL;
 352 }
 353
 354 static void
 355 write_bool_column(struct ovsdb_row *row, const char *column_name, bool value)
 356 {
 357     struct ovsdb_datum *datum = get_datum(row, column_name, OVSDB_TYPE_BOOLEAN,
 358                                           OVSDB_TYPE_VOID, 1);
 359
 360     if (!datum) {
 361         return;
 362     }
 363     datum->keys[0].boolean = value;
 364 }
 365
 366 static void
 367 write_string_string_column(struct ovsdb_row *row, const char *column_name,
 368                            char **keys, char **values, size_t n)
 369 {
 370     const struct ovsdb_column *column;
 371     struct ovsdb_datum *datum;
 372     size_t i;
 373
 374     column = ovsdb_table_schema_get_column(row->table->schema, column_name);
 375     datum = get_datum(row, column_name, OVSDB_TYPE_STRING, OVSDB_TYPE_STRING,
 376                       UINT_MAX);
 377     if (!datum) {
 378         return;
 379     }
 380
 381     /* Free existing data. */
 382     ovsdb_datum_destroy(datum, &column->type);
 383
 384     /* Allocate space for new values. */
 385     datum->n = n;
 386     datum->keys = xmalloc(n * sizeof *datum->keys);
 387     datum->values = xmalloc(n * sizeof *datum->values);
 388
 389     for (i = 0; i < n; ++i) {
 390         datum->keys[i].string = keys[i];
 391         datum->values[i].string = values[i];
 392     }
 393
 394     /* Sort and check constraints. */
 395     ovsdb_datum_sort_assert(datum, column->type.key.type);
 396 }
 397
 398 /* Adds a remote and options to 'remotes', based on the Manager table row in
 399  * 'row'. */
 400 static void
 401 add_manager_options(struct shash *remotes, const struct ovsdb_row *row)
 402 {
 403     static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
 404     struct ovsdb_jsonrpc_options *options;
 405     long long int max_backoff, probe_interval;
 406     const char *target;
 407
 408     if (!read_string_column(row, "target", &target) || !target) {
 409         VLOG_INFO_RL(&rl, "Table `%s' has missing or invalid `target' column",
 410                      row->table->schema->name);
 411         return;
 412     }
 413
 414     options = add_remote(remotes, target);
 415     if (read_integer_column(row, "max_backoff", &max_backoff)) {
 416         options->max_backoff = max_backoff;
 417     }
 418     if (read_integer_column(row, "inactivity_probe", &probe_interval)) {
 419         options->probe_interval = probe_interval;
 420     }
 421 }
 422
 423 static void
 424 query_db_remotes(const char *name, const struct ovsdb *db,
 425                  struct shash *remotes)
 426 {
 427     const struct ovsdb_column *column;
 428     const struct ovsdb_table *table;
 429     const struct ovsdb_row *row;
 430
 431     parse_db_column(db, name, &table, &column);
 432
 433     if (column->type.key.type == OVSDB_TYPE_STRING
 434         && column->type.value.type == OVSDB_TYPE_VOID) {
 435         HMAP_FOR_EACH (row, hmap_node, &table->rows) {
 436             const struct ovsdb_datum *datum;
 437             size_t i;
 438
 439             datum = &row->fields[column->index];
 440             for (i = 0; i < datum->n; i++) {
 441                 add_remote(remotes, datum->keys[i].string);
 442             }
 443         }
 444     } else if (column->type.key.type == OVSDB_TYPE_UUID
 445                && column->type.key.u.uuid.refTable
 446                && column->type.value.type == OVSDB_TYPE_VOID) {
 447         const struct ovsdb_table *ref_table = column->type.key.u.uuid.refTable;
 448         HMAP_FOR_EACH (row, hmap_node, &table->rows) {
 449             const struct ovsdb_datum *datum;
 450             size_t i;
 451
 452             datum = &row->fields[column->index];
 453             for (i = 0; i < datum->n; i++) {
 454                 const struct ovsdb_row *ref_row;
 455
 456                 ref_row = ovsdb_table_get_row(ref_table, &datum->keys[i].uuid);
 457                 if (ref_row) {
 458                     add_manager_options(remotes, ref_row);
 459                 }
 460             }
 461         }
 462     }
 463 }
 464
 465 static void
 466 update_remote_row(const struct ovsdb_row *row, struct ovsdb_txn *txn,
 467                   const struct ovsdb_jsonrpc_server *jsonrpc)
 468 {
 469     struct ovsdb_jsonrpc_remote_status status;
 470     struct ovsdb_row *rw_row;
 471     const char *target;
 472     char *keys[8], *values[8];
 473     size_t n = 0;
 474
 475     /* Get the "target" (protocol/host/port) spec. */
 476     if (!read_string_column(row, "target", &target)) {
 477         /* Bad remote spec or incorrect schema. */
 478         return;
 479     }
 480     rw_row = ovsdb_txn_row_modify(txn, row);
 481     ovsdb_jsonrpc_server_get_remote_status(jsonrpc, target, &status);
 482
 483     /* Update status information columns. */
 484     write_bool_column(rw_row, "is_connected", status.is_connected);
 485
 486     if (status.state) {
 487         keys[n] = xstrdup("state");
 488         values[n++] = xstrdup(status.state);
 489     }
 490     if (status.sec_since_connect != UINT_MAX) {
 491         keys[n] = xstrdup("sec_since_connect");
 492         values[n++] = xasprintf("%u", status.sec_since_connect);
 493     }
 494     if (status.sec_since_disconnect != UINT_MAX) {
 495         keys[n] = xstrdup("sec_since_disconnect");
 496         values[n++] = xasprintf("%u", status.sec_since_disconnect);
 497     }
 498     if (status.last_error) {
 499         keys[n] = xstrdup("last_error");
 500         values[n++] =
 501             xstrdup(ovs_retval_to_string(status.last_error));
 502     }
 503     if (status.locks_held && status.locks_held[0]) {
 504         keys[n] = xstrdup("locks_held");
 505         values[n++] = xstrdup(status.locks_held);
 506     }
 507     if (status.locks_waiting && status.locks_waiting[0]) {
 508         keys[n] = xstrdup("locks_waiting");
 509         values[n++] = xstrdup(status.locks_waiting);
 510     }
 511     if (status.locks_lost && status.locks_lost[0]) {
 512         keys[n] = xstrdup("locks_lost");
 513         values[n++] = xstrdup(status.locks_lost);
 514     }
 515     if (status.n_connections > 1) {
 516         keys[n] = xstrdup("n_connections");
 517         values[n++] = xasprintf("%d", status.n_connections);
 518     }
 519     write_string_string_column(rw_row, "status", keys, values, n);
 520
 521     ovsdb_jsonrpc_server_free_remote_status(&status);
 522 }
 523
 524 static void
 525 update_remote_rows(const struct ovsdb *db, struct ovsdb_txn *txn,
 526                    const char *remote_name,
 527                    const struct ovsdb_jsonrpc_server *jsonrpc)
 528 {
 529     const struct ovsdb_table *table, *ref_table;
 530     const struct ovsdb_column *column;
 531     const struct ovsdb_row *row;
 532
 533     if (strncmp("db:", remote_name, 3)) {
 534         return;
 535     }
 536
 537     parse_db_column(db, remote_name, &table, &column);
 538
 539     if (column->type.key.type != OVSDB_TYPE_UUID
 540         || !column->type.key.u.uuid.refTable
 541         || column->type.value.type != OVSDB_TYPE_VOID) {
 542         return;
 543     }
 544
 545     ref_table = column->type.key.u.uuid.refTable;
 546
 547     HMAP_FOR_EACH (row, hmap_node, &table->rows) {
 548         const struct ovsdb_datum *datum;
 549         size_t i;
 550
 551         datum = &row->fields[column->index];
 552         for (i = 0; i < datum->n; i++) {
 553             const struct ovsdb_row *ref_row;
 554
 555             ref_row = ovsdb_table_get_row(ref_table, &datum->keys[i].uuid);
 556             if (ref_row) {
 557                 update_remote_row(ref_row, txn, jsonrpc);
 558             }
 559         }
 560     }
 561 }
 562
 563 static void
 564 update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
 565                      const struct sset *remotes, struct ovsdb *db)
 566 {
 567     static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
 568     struct ovsdb_txn *txn;
 569     const bool durable_txn = false;
 570     struct ovsdb_error *error;
 571     const char *remote;
 572
 573     txn = ovsdb_txn_create(db);
 574
 575     /* Iterate over --remote arguments given on command line. */
 576     SSET_FOR_EACH (remote, remotes) {
 577         update_remote_rows(db, txn, remote, jsonrpc);
 578     }
 579
 580     error = ovsdb_txn_commit(txn, durable_txn);
 581     if (error) {
 582         VLOG_ERR_RL(&rl, "Failed to update remote status: %s",
 583                     ovsdb_error_to_string(error));
 584     }
 585 }
 586
 587 /* Reconfigures ovsdb-server based on information in the database. */
 588 static void
 589 reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
 590                     const struct ovsdb *db, struct sset *remotes)
 591 {
 592     struct shash resolved_remotes;
 593     const char *name;
 594
 595     /* Configure remotes. */
 596     shash_init(&resolved_remotes);
 597     SSET_FOR_EACH (name, remotes) {
 598         if (!strncmp(name, "db:", 3)) {
 599             query_db_remotes(name, db, &resolved_remotes);
 600         } else {
 601             add_remote(&resolved_remotes, name);
 602         }
 603     }
 604     ovsdb_jsonrpc_server_set_remotes(jsonrpc, &resolved_remotes);
 605     shash_destroy_free_data(&resolved_remotes);
 606
 607     /* Configure SSL. */
 608     stream_ssl_set_key_and_cert(query_db_string(db, private_key_file),
 609                                 query_db_string(db, certificate_file));
 610     stream_ssl_set_ca_cert_file(query_db_string(db, ca_cert_file),
 611                                 bootstrap_ca_cert);
 612 }
 613
 614 static void
 615 ovsdb_server_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
 616                   void *exiting_)
 617 {
 618     bool *exiting = exiting_;
 619     *exiting = true;
 620     unixctl_command_reply(conn, 200, NULL);
 621 }
 622
 623 static void
 624 ovsdb_server_compact(struct unixctl_conn *conn, const char *args OVS_UNUSED,
 625                      void *file_)
 626 {
 627     struct ovsdb_file *file = file_;
 628     struct ovsdb_error *error;
 629
 630     VLOG_INFO("compacting database by user request");
 631     error = ovsdb_file_compact(file);
 632     if (!error) {
 633         unixctl_command_reply(conn, 200, NULL);
 634     } else {
 635         char *s = ovsdb_error_to_string(error);
 636         ovsdb_error_destroy(error);
 637         unixctl_command_reply(conn, 503, s);
 638         free(s);
 639     }
 640 }
 641
 642 /* "ovsdb-server/reconnect": makes ovsdb-server drop all of its JSON-RPC
 643  * connections and reconnect. */
 644 static void
 645 ovsdb_server_reconnect(struct unixctl_conn *conn, const char *args OVS_UNUSED,
 646                        void *jsonrpc_)
 647 {
 648     struct ovsdb_jsonrpc_server *jsonrpc = jsonrpc_;
 649
 650     ovsdb_jsonrpc_server_reconnect(jsonrpc);
 651     unixctl_command_reply(conn, 200, NULL);
 652 }
 653
 654 static void
 655 parse_options(int argc, char *argv[], char **file_namep,
 656               struct sset *remotes, char **unixctl_pathp,
 657               char **run_command)
 658 {
 659     enum {
 660         OPT_DUMMY = UCHAR_MAX + 1,
 661         OPT_REMOTE,
 662         OPT_UNIXCTL,
 663         OPT_RUN,
 664         OPT_BOOTSTRAP_CA_CERT,
 665         VLOG_OPTION_ENUMS,
 666         LEAK_CHECKER_OPTION_ENUMS,
 667         DAEMON_OPTION_ENUMS
 668     };
 669     static struct option long_options[] = {
 670         {"remote",      required_argument, NULL, OPT_REMOTE},
 671         {"unixctl",     required_argument, NULL, OPT_UNIXCTL},
 672         {"run",         required_argument, NULL, OPT_RUN},
 673         {"help",        no_argument, NULL, 'h'},
 674         {"version",     no_argument, NULL, 'V'},
 675         DAEMON_LONG_OPTIONS,
 676         VLOG_LONG_OPTIONS,
 677         LEAK_CHECKER_LONG_OPTIONS,
 678         {"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT},
 679         {"private-key", required_argument, NULL, 'p'},
 680         {"certificate", required_argument, NULL, 'c'},
 681         {"ca-cert",     required_argument, NULL, 'C'},
 682         {NULL, 0, NULL, 0},
 683     };
 684     char *short_options = long_options_to_short_options(long_options);
 685
 686     sset_init(remotes);
 687     for (;;) {
 688         int c;
 689
 690         c = getopt_long(argc, argv, short_options, long_options, NULL);
 691         if (c == -1) {
 692             break;
 693         }
 694
 695         switch (c) {
 696         case OPT_REMOTE:
 697             sset_add(remotes, optarg);
 698             break;
 699
 700         case OPT_UNIXCTL:
 701             *unixctl_pathp = optarg;
 702             break;
 703
 704         case OPT_RUN:
 705             *run_command = optarg;
 706             break;
 707
 708         case 'h':
 709             usage();
 710
 711         case 'V':
 712             ovs_print_version(0, 0);
 713             exit(EXIT_SUCCESS);
 714
 715         VLOG_OPTION_HANDLERS
 716         DAEMON_OPTION_HANDLERS
 717         LEAK_CHECKER_OPTION_HANDLERS
 718
 719         case 'p':
 720             private_key_file = optarg;
 721             break;
 722
 723         case 'c':
 724             certificate_file = optarg;
 725             break;
 726
 727         case 'C':
 728             ca_cert_file = optarg;
 729             bootstrap_ca_cert = false;
 730             break;
 731
 732         case OPT_BOOTSTRAP_CA_CERT:
 733             ca_cert_file = optarg;
 734             bootstrap_ca_cert = true;
 735             break;
 736
 737         case '?':
 738             exit(EXIT_FAILURE);
 739
 740         default:
 741             abort();
 742         }
 743     }
 744     free(short_options);
 745
 746     argc -= optind;
 747     argv += optind;
 748
 749     switch (argc) {
 750     case 0:
 751         *file_namep = xasprintf("%s/openvswitch/conf.db", ovs_sysconfdir());
 752         break;
 753
 754     case 1:
 755         *file_namep = xstrdup(argv[0]);
 756         break;
 757
 758     default:
 759         ovs_fatal(0, "database file is only non-option argument; "
 760                 "use --help for usage");
 761     }
 762 }
 763
 764 static void
 765 usage(void)
 766 {
 767     printf("%s: Open vSwitch database server\n"
 768            "usage: %s [OPTIONS] DATABASE\n"
 769            "where DATABASE is a database file in ovsdb format.\n",
 770            program_name, program_name);
 771     printf("\nJSON-RPC options (may be specified any number of times):\n"
 772            "  --remote=REMOTE         connect or listen to REMOTE\n");
 773     stream_usage("JSON-RPC", true, true, true);
 774     daemon_usage();
 775     vlog_usage();
 776     printf("\nOther options:\n"
 777            "  --run COMMAND           run COMMAND as subprocess then exit\n"
 778            "  --unixctl=SOCKET        override default control socket name\n"
 779            "  -h, --help              display this help message\n"
 780            "  -V, --version           display version information\n");
 781     leak_checker_usage();
 782     exit(EXIT_SUCCESS);
 783 }