ovn/utilities/ovn-sbctl.c

   1 /*
   2  * Copyright (c) 2015, 2016 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18
  19 #include <ctype.h>
  20 #include <errno.h>
  21 #include <float.h>
  22 #include <getopt.h>
  23 #include <inttypes.h>
  24 #include <signal.h>
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29
  30 #include "db-ctl-base.h"
  31 #include "dirs.h"
  32
  33 #include "command-line.h"
  34 #include "compiler.h"
  35 #include "openvswitch/dynamic-string.h"
  36 #include "fatal-signal.h"
  37 #include "json.h"
  38 #include "ovsdb-data.h"
  39 #include "ovsdb-idl.h"
  40 #include "poll-loop.h"
  41 #include "process.h"
  42 #include "sset.h"
  43 #include "shash.h"
  44 #include "stream-ssl.h"
  45 #include "stream.h"
  46 #include "table.h"
  47 #include "timeval.h"
  48 #include "util.h"
  49 #include "openvswitch/vlog.h"
  50 #include "ovn/lib/ovn-sb-idl.h"
  51
  52 VLOG_DEFINE_THIS_MODULE(sbctl);
  53
  54 struct sbctl_context;
  55
  56 /* --db: The database server to contact. */
  57 static const char *db;
  58
  59 /* --oneline: Write each command's output as a single line? */
  60 static bool oneline;
  61
  62 /* --dry-run: Do not commit any changes. */
  63 static bool dry_run;
  64
  65 /* --timeout: Time to wait for a connection to 'db'. */
  66 static int timeout;
  67
  68 /* Format for table output. */
  69 static struct table_style table_style = TABLE_STYLE_DEFAULT;
  70
  71 /* The IDL we're using and the current transaction, if any.
  72  * This is for use by sbctl_exit() only, to allow it to clean up.
  73  * Other code should use its context arguments. */
  74 static struct ovsdb_idl *the_idl;
  75 static struct ovsdb_idl_txn *the_idl_txn;
  76 OVS_NO_RETURN static void sbctl_exit(int status);
  77
  78 static void sbctl_cmd_init(void);
  79 OVS_NO_RETURN static void usage(void);
  80 static void parse_options(int argc, char *argv[], struct shash *local_options);
  81 static const char *sbctl_default_db(void);
  82 static void run_prerequisites(struct ctl_command[], size_t n_commands,
  83                               struct ovsdb_idl *);
  84 static bool do_sbctl(const char *args, struct ctl_command *, size_t n,
  85                      struct ovsdb_idl *);
  86
  87 int
  88 main(int argc, char *argv[])
  89 {
  90     struct ovsdb_idl *idl;
  91     struct ctl_command *commands;
  92     struct shash local_options;
  93     unsigned int seqno;
  94     size_t n_commands;
  95     char *args;
  96
  97     set_program_name(argv[0]);
  98     fatal_ignore_sigpipe();
  99     vlog_set_levels(NULL, VLF_CONSOLE, VLL_WARN);
 100     vlog_set_levels_from_string_assert("reconnect:warn");
 101     sbrec_init();
 102
 103     sbctl_cmd_init();
 104
 105     /* Log our arguments.  This is often valuable for debugging systems. */
 106     args = process_escape_args(argv);
 107     VLOG(ctl_might_write_to_db(argv) ? VLL_INFO : VLL_DBG, "Called as %s", args);
 108
 109     /* Parse command line. */
 110     shash_init(&local_options);
 111     parse_options(argc, argv, &local_options);
 112     commands = ctl_parse_commands(argc - optind, argv + optind, &local_options,
 113                                   &n_commands);
 114
 115     if (timeout) {
 116         time_alarm(timeout);
 117     }
 118
 119     /* Initialize IDL. */
 120     idl = the_idl = ovsdb_idl_create(db, &sbrec_idl_class, false, false);
 121     run_prerequisites(commands, n_commands, idl);
 122
 123     /* Execute the commands.
 124      *
 125      * 'seqno' is the database sequence number for which we last tried to
 126      * execute our transaction.  There's no point in trying to commit more than
 127      * once for any given sequence number, because if the transaction fails
 128      * it's because the database changed and we need to obtain an up-to-date
 129      * view of the database before we try the transaction again. */
 130     seqno = ovsdb_idl_get_seqno(idl);
 131     for (;;) {
 132         ovsdb_idl_run(idl);
 133         if (!ovsdb_idl_is_alive(idl)) {
 134             int retval = ovsdb_idl_get_last_error(idl);
 135             ctl_fatal("%s: database connection failed (%s)",
 136                         db, ovs_retval_to_string(retval));
 137         }
 138
 139         if (seqno != ovsdb_idl_get_seqno(idl)) {
 140             seqno = ovsdb_idl_get_seqno(idl);
 141             if (do_sbctl(args, commands, n_commands, idl)) {
 142                 free(args);
 143                 exit(EXIT_SUCCESS);
 144             }
 145         }
 146
 147         if (seqno == ovsdb_idl_get_seqno(idl)) {
 148             ovsdb_idl_wait(idl);
 149             poll_block();
 150         }
 151     }
 152 }
 153
 154 static const char *
 155 sbctl_default_db(void)
 156 {
 157     static char *def;
 158     if (!def) {
 159         def = getenv("OVN_SB_DB");
 160         if (!def) {
 161             def = xasprintf("unix:%s/ovnsb_db.sock", ovs_rundir());
 162         }
 163     }
 164     return def;
 165 }
 166
 167 static void
 168 parse_options(int argc, char *argv[], struct shash *local_options)
 169 {
 170     enum {
 171         OPT_DB = UCHAR_MAX + 1,
 172         OPT_ONELINE,
 173         OPT_NO_SYSLOG,
 174         OPT_DRY_RUN,
 175         OPT_PEER_CA_CERT,
 176         OPT_LOCAL,
 177         OPT_COMMANDS,
 178         OPT_OPTIONS,
 179         VLOG_OPTION_ENUMS,
 180         TABLE_OPTION_ENUMS
 181     };
 182     static const struct option global_long_options[] = {
 183         {"db", required_argument, NULL, OPT_DB},
 184         {"no-syslog", no_argument, NULL, OPT_NO_SYSLOG},
 185         {"dry-run", no_argument, NULL, OPT_DRY_RUN},
 186         {"oneline", no_argument, NULL, OPT_ONELINE},
 187         {"timeout", required_argument, NULL, 't'},
 188         {"help", no_argument, NULL, 'h'},
 189         {"commands", no_argument, NULL, OPT_COMMANDS},
 190         {"options", no_argument, NULL, OPT_OPTIONS},
 191         {"version", no_argument, NULL, 'V'},
 192         VLOG_LONG_OPTIONS,
 193         STREAM_SSL_LONG_OPTIONS,
 194         TABLE_LONG_OPTIONS,
 195         {NULL, 0, NULL, 0},
 196     };
 197     const int n_global_long_options = ARRAY_SIZE(global_long_options) - 1;
 198     char *tmp, *short_options;
 199
 200     struct option *options;
 201     size_t allocated_options;
 202     size_t n_options;
 203     size_t i;
 204
 205     tmp = ovs_cmdl_long_options_to_short_options(global_long_options);
 206     short_options = xasprintf("+%s", tmp);
 207     free(tmp);
 208
 209     /* We want to parse both global and command-specific options here, but
 210      * getopt_long() isn't too convenient for the job.  We copy our global
 211      * options into a dynamic array, then append all of the command-specific
 212      * options. */
 213     options = xmemdup(global_long_options, sizeof global_long_options);
 214     allocated_options = ARRAY_SIZE(global_long_options);
 215     n_options = n_global_long_options;
 216     ctl_add_cmd_options(&options, &n_options, &allocated_options, OPT_LOCAL);
 217     table_style.format = TF_LIST;
 218
 219     for (;;) {
 220         int idx;
 221         int c;
 222
 223         c = getopt_long(argc, argv, short_options, options, &idx);
 224         if (c == -1) {
 225             break;
 226         }
 227
 228         switch (c) {
 229         case OPT_DB:
 230             db = optarg;
 231             break;
 232
 233         case OPT_ONELINE:
 234             oneline = true;
 235             break;
 236
 237         case OPT_NO_SYSLOG:
 238             vlog_set_levels(&this_module, VLF_SYSLOG, VLL_WARN);
 239             break;
 240
 241         case OPT_DRY_RUN:
 242             dry_run = true;
 243             break;
 244
 245         case OPT_LOCAL:
 246             if (shash_find(local_options, options[idx].name)) {
 247                 ctl_fatal("'%s' option specified multiple times",
 248                             options[idx].name);
 249             }
 250             shash_add_nocopy(local_options,
 251                              xasprintf("--%s", options[idx].name),
 252                              nullable_xstrdup(optarg));
 253             break;
 254
 255         case 'h':
 256             usage();
 257
 258         case OPT_COMMANDS:
 259             ctl_print_commands();
 260
 261         case OPT_OPTIONS:
 262             ctl_print_options(global_long_options);
 263
 264         case 'V':
 265             ovs_print_version(0, 0);
 266             printf("DB Schema %s\n", sbrec_get_db_version());
 267             exit(EXIT_SUCCESS);
 268
 269         case 't':
 270             timeout = strtoul(optarg, NULL, 10);
 271             if (timeout < 0) {
 272                 ctl_fatal("value %s on -t or --timeout is invalid", optarg);
 273             }
 274             break;
 275
 276         VLOG_OPTION_HANDLERS
 277         TABLE_OPTION_HANDLERS(&table_style)
 278         STREAM_SSL_OPTION_HANDLERS
 279
 280         case '?':
 281             exit(EXIT_FAILURE);
 282
 283         default:
 284             abort();
 285         }
 286     }
 287     free(short_options);
 288
 289     if (!db) {
 290         db = sbctl_default_db();
 291     }
 292
 293     for (i = n_global_long_options; options[i].name; i++) {
 294         free(CONST_CAST(char *, options[i].name));
 295     }
 296     free(options);
 297 }
 298
 299 static void
 300 usage(void)
 301 {
 302     printf("\
 303 %s: OVN southbound DB management utility\n\
 304 \n\
 305 For debugging and testing only, not for use in production.\n\
 306 \n\
 307 usage: %s [OPTIONS] COMMAND [ARG...]\n\
 308 \n\
 309 General commands:\n\
 310   show                        print overview of database contents\n\
 311 \n\
 312 Chassis commands:\n\
 313   chassis-add CHASSIS ENCAP-TYPE ENCAP-IP  create a new chassis named\n\
 314                                            CHASSIS with ENCAP-TYPE tunnels\n\
 315                                            and ENCAP-IP\n\
 316   chassis-del CHASSIS         delete CHASSIS and all of its encaps\n\
 317                               and gateway_ports\n\
 318 \n\
 319 Port binding commands:\n\
 320   lport-bind LPORT CHASSIS    bind logical port LPORT to CHASSIS\n\
 321   lport-unbind LPORT          reset the port binding of logical port LPORT\n\
 322 \n\
 323 Logical flow commands:\n\
 324   lflow-list [DATAPATH]       List logical flows for all or a single datapath\n\
 325   dump-flows [DATAPATH]       Alias for lflow-list\n\
 326 \n\
 327 %s\
 328 \n\
 329 Options:\n\
 330   --db=DATABASE               connect to DATABASE\n\
 331                               (default: %s)\n\
 332   -t, --timeout=SECS          wait at most SECS seconds\n\
 333   --dry-run                   do not commit changes to database\n\
 334   --oneline                   print exactly one line of output per command\n",
 335            program_name, program_name, ctl_get_db_cmd_usage(), sbctl_default_db());
 336     vlog_usage();
 337     printf("\
 338   --no-syslog             equivalent to --verbose=sbctl:syslog:warn\n");
 339     printf("\n\
 340 Other options:\n\
 341   -h, --help                  display this help message\n\
 342   -V, --version               display version information\n");
 343     stream_usage("database", true, true, false);
 344     exit(EXIT_SUCCESS);
 345 }
 346
 347 \f
 348 /* ovs-sbctl specific context.  Inherits the 'struct ctl_context' as base. */
 349 struct sbctl_context {
 350     struct ctl_context base;
 351
 352     /* A cache of the contents of the database.
 353      *
 354      * A command that needs to use any of this information must first call
 355      * sbctl_context_populate_cache().  A command that changes anything that
 356      * could invalidate the cache must either call
 357      * sbctl_context_invalidate_cache() or manually update the cache to
 358      * maintain its correctness. */
 359     bool cache_valid;
 360     /* Maps from chassis name to struct sbctl_chassis. */
 361     struct shash chassis;
 362     /* Maps from lport name to struct sbctl_port_binding. */
 363     struct shash port_bindings;
 364 };
 365
 366 /* Casts 'base' into 'struct sbctl_context'. */
 367 static struct sbctl_context *
 368 sbctl_context_cast(struct ctl_context *base)
 369 {
 370     return CONTAINER_OF(base, struct sbctl_context, base);
 371 }
 372
 373 struct sbctl_chassis {
 374     const struct sbrec_chassis *ch_cfg;
 375 };
 376
 377 struct sbctl_port_binding {
 378     const struct sbrec_port_binding *bd_cfg;
 379 };
 380
 381 static void
 382 sbctl_context_invalidate_cache(struct ctl_context *ctx)
 383 {
 384     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 385
 386     if (!sbctl_ctx->cache_valid) {
 387         return;
 388     }
 389     sbctl_ctx->cache_valid = false;
 390     shash_destroy_free_data(&sbctl_ctx->chassis);
 391     shash_destroy_free_data(&sbctl_ctx->port_bindings);
 392 }
 393
 394 static void
 395 sbctl_context_populate_cache(struct ctl_context *ctx)
 396 {
 397     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 398     const struct sbrec_chassis *chassis_rec;
 399     const struct sbrec_port_binding *port_binding_rec;
 400     struct sset chassis, port_bindings;
 401
 402     if (sbctl_ctx->cache_valid) {
 403         /* Cache is already populated. */
 404         return;
 405     }
 406     sbctl_ctx->cache_valid = true;
 407     shash_init(&sbctl_ctx->chassis);
 408     shash_init(&sbctl_ctx->port_bindings);
 409     sset_init(&chassis);
 410     SBREC_CHASSIS_FOR_EACH(chassis_rec, ctx->idl) {
 411         struct sbctl_chassis *ch;
 412
 413         if (!sset_add(&chassis, chassis_rec->name)) {
 414             VLOG_WARN("database contains duplicate chassis name (%s)",
 415                       chassis_rec->name);
 416             continue;
 417         }
 418
 419         ch = xmalloc(sizeof *ch);
 420         ch->ch_cfg = chassis_rec;
 421         shash_add(&sbctl_ctx->chassis, chassis_rec->name, ch);
 422     }
 423     sset_destroy(&chassis);
 424
 425     sset_init(&port_bindings);
 426     SBREC_PORT_BINDING_FOR_EACH(port_binding_rec, ctx->idl) {
 427         struct sbctl_port_binding *bd;
 428
 429         if (!sset_add(&port_bindings, port_binding_rec->logical_port)) {
 430             VLOG_WARN("database contains duplicate port binding for logical "
 431                       "port (%s)",
 432                       port_binding_rec->logical_port);
 433             continue;
 434         }
 435
 436         bd = xmalloc(sizeof *bd);
 437         bd->bd_cfg = port_binding_rec;
 438         shash_add(&sbctl_ctx->port_bindings, port_binding_rec->logical_port,
 439                   bd);
 440     }
 441     sset_destroy(&port_bindings);
 442 }
 443
 444 static void
 445 check_conflicts(struct sbctl_context *sbctl_ctx, const char *name,
 446                 char *msg)
 447 {
 448     if (shash_find(&sbctl_ctx->chassis, name)) {
 449         ctl_fatal("%s because a chassis named %s already exists",
 450                     msg, name);
 451     }
 452     free(msg);
 453 }
 454
 455 static struct sbctl_chassis *
 456 find_chassis(struct sbctl_context *sbctl_ctx, const char *name,
 457              bool must_exist)
 458 {
 459     struct sbctl_chassis *sbctl_ch;
 460
 461     ovs_assert(sbctl_ctx->cache_valid);
 462
 463     sbctl_ch = shash_find_data(&sbctl_ctx->chassis, name);
 464     if (must_exist && !sbctl_ch) {
 465         ctl_fatal("no chassis named %s", name);
 466     }
 467
 468     return sbctl_ch;
 469 }
 470
 471 static struct sbctl_port_binding *
 472 find_port_binding(struct sbctl_context *sbctl_ctx, const char *name,
 473                   bool must_exist)
 474 {
 475     struct sbctl_port_binding *bd;
 476
 477     ovs_assert(sbctl_ctx->cache_valid);
 478
 479     bd = shash_find_data(&sbctl_ctx->port_bindings, name);
 480     if (must_exist && !bd) {
 481         ctl_fatal("no port named %s", name);
 482     }
 483
 484     return bd;
 485 }
 486
 487 static void
 488 pre_get_info(struct ctl_context *ctx)
 489 {
 490     ovsdb_idl_add_column(ctx->idl, &sbrec_chassis_col_name);
 491     ovsdb_idl_add_column(ctx->idl, &sbrec_chassis_col_encaps);
 492
 493     ovsdb_idl_add_column(ctx->idl, &sbrec_encap_col_type);
 494     ovsdb_idl_add_column(ctx->idl, &sbrec_encap_col_ip);
 495
 496     ovsdb_idl_add_column(ctx->idl, &sbrec_port_binding_col_logical_port);
 497     ovsdb_idl_add_column(ctx->idl, &sbrec_port_binding_col_chassis);
 498
 499     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_logical_datapath);
 500     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_pipeline);
 501     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_actions);
 502     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_priority);
 503     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_table_id);
 504     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_match);
 505     ovsdb_idl_add_column(ctx->idl, &sbrec_logical_flow_col_external_ids);
 506 }
 507
 508 static struct cmd_show_table cmd_show_tables[] = {
 509     {&sbrec_table_chassis,
 510      &sbrec_chassis_col_name,
 511      {&sbrec_chassis_col_hostname,
 512       &sbrec_chassis_col_encaps,
 513       NULL},
 514      {&sbrec_table_port_binding,
 515       &sbrec_port_binding_col_logical_port,
 516       &sbrec_port_binding_col_chassis}},
 517
 518     {&sbrec_table_encap,
 519      &sbrec_encap_col_type,
 520      {&sbrec_encap_col_ip,
 521       &sbrec_encap_col_options,
 522       NULL},
 523      {NULL, NULL, NULL}},
 524
 525     {NULL, NULL, {NULL, NULL, NULL}, {NULL, NULL, NULL}},
 526 };
 527
 528 static void
 529 cmd_chassis_add(struct ctl_context *ctx)
 530 {
 531     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 532     bool may_exist = shash_find(&ctx->options, "--may-exist") != NULL;
 533     const char *ch_name, *encap_types, *encap_ip;
 534
 535     ch_name = ctx->argv[1];
 536     encap_types = ctx->argv[2];
 537     encap_ip = ctx->argv[3];
 538
 539     sbctl_context_populate_cache(ctx);
 540     if (may_exist) {
 541         struct sbctl_chassis *sbctl_ch;
 542
 543         sbctl_ch = find_chassis(sbctl_ctx, ch_name, false);
 544         if (sbctl_ch) {
 545             return;
 546         }
 547     }
 548     check_conflicts(sbctl_ctx, ch_name,
 549                     xasprintf("cannot create a chassis named %s", ch_name));
 550
 551     char *tokstr = xstrdup(encap_types);
 552     char *token, *save_ptr = NULL;
 553     struct sset encap_set = SSET_INITIALIZER(&encap_set);
 554     for (token = strtok_r(tokstr, ",", &save_ptr); token != NULL;
 555          token = strtok_r(NULL, ",", &save_ptr)) {
 556         sset_add(&encap_set, token);
 557     }
 558     free(tokstr);
 559
 560     size_t n_encaps = sset_count(&encap_set);
 561     struct sbrec_encap **encaps = xmalloc(n_encaps * sizeof *encaps);
 562     const char *encap_type;
 563     int i = 0;
 564     SSET_FOR_EACH (encap_type, &encap_set){
 565         encaps[i] = sbrec_encap_insert(ctx->txn);
 566
 567         sbrec_encap_set_type(encaps[i], encap_type);
 568         sbrec_encap_set_ip(encaps[i], encap_ip);
 569         i++;
 570     }
 571     sset_destroy(&encap_set);
 572
 573     struct sbrec_chassis *ch = sbrec_chassis_insert(ctx->txn);
 574     sbrec_chassis_set_name(ch, ch_name);
 575     sbrec_chassis_set_encaps(ch, encaps, n_encaps);
 576     free(encaps);
 577
 578     sbctl_context_invalidate_cache(ctx);
 579 }
 580
 581 static void
 582 cmd_chassis_del(struct ctl_context *ctx)
 583 {
 584     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 585     bool must_exist = !shash_find(&ctx->options, "--if-exists");
 586     struct sbctl_chassis *sbctl_ch;
 587
 588     sbctl_context_populate_cache(ctx);
 589     sbctl_ch = find_chassis(sbctl_ctx, ctx->argv[1], must_exist);
 590     if (sbctl_ch) {
 591         if (sbctl_ch->ch_cfg) {
 592             size_t i;
 593
 594             for (i = 0; i < sbctl_ch->ch_cfg->n_encaps; i++) {
 595                 sbrec_encap_delete(sbctl_ch->ch_cfg->encaps[i]);
 596             }
 597             sbrec_chassis_delete(sbctl_ch->ch_cfg);
 598         }
 599         shash_find_and_delete(&sbctl_ctx->chassis, ctx->argv[1]);
 600         free(sbctl_ch);
 601     }
 602 }
 603
 604 static void
 605 cmd_lport_bind(struct ctl_context *ctx)
 606 {
 607     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 608     bool may_exist = shash_find(&ctx->options, "--may-exist") != NULL;
 609     struct sbctl_chassis *sbctl_ch;
 610     struct sbctl_port_binding *sbctl_bd;
 611     char *lport_name, *ch_name;
 612
 613     /* port_binding must exist, chassis must exist! */
 614     lport_name = ctx->argv[1];
 615     ch_name = ctx->argv[2];
 616
 617     sbctl_context_populate_cache(ctx);
 618     sbctl_bd = find_port_binding(sbctl_ctx, lport_name, true);
 619     sbctl_ch = find_chassis(sbctl_ctx, ch_name, true);
 620
 621     if (sbctl_bd->bd_cfg->chassis) {
 622         if (may_exist && sbctl_bd->bd_cfg->chassis == sbctl_ch->ch_cfg) {
 623             return;
 624         } else {
 625             ctl_fatal("lport (%s) has already been binded to chassis (%s)",
 626                       lport_name, sbctl_bd->bd_cfg->chassis->name);
 627         }
 628     }
 629     sbrec_port_binding_set_chassis(sbctl_bd->bd_cfg, sbctl_ch->ch_cfg);
 630     sbctl_context_invalidate_cache(ctx);
 631 }
 632
 633 static void
 634 cmd_lport_unbind(struct ctl_context *ctx)
 635 {
 636     struct sbctl_context *sbctl_ctx = sbctl_context_cast(ctx);
 637     bool must_exist = !shash_find(&ctx->options, "--if-exists");
 638     struct sbctl_port_binding *sbctl_bd;
 639     char *lport_name;
 640
 641     lport_name = ctx->argv[1];
 642     sbctl_context_populate_cache(ctx);
 643     sbctl_bd = find_port_binding(sbctl_ctx, lport_name, must_exist);
 644     if (sbctl_bd) {
 645         sbrec_port_binding_set_chassis(sbctl_bd->bd_cfg, NULL);
 646     }
 647 }
 648
 649 enum {
 650     PL_INGRESS,
 651     PL_EGRESS,
 652 };
 653
 654 /* Help ensure we catch any future pipeline values */
 655 static int
 656 pipeline_encode(const char *pl)
 657 {
 658     if (!strcmp(pl, "ingress")) {
 659         return PL_INGRESS;
 660     } else if (!strcmp(pl, "egress")) {
 661         return PL_EGRESS;
 662     }
 663
 664     OVS_NOT_REACHED();
 665 }
 666
 667 static int
 668 lflow_cmp(const void *lf1_, const void *lf2_)
 669 {
 670     const struct sbrec_logical_flow *const *lf1p = lf1_;
 671     const struct sbrec_logical_flow *const *lf2p = lf2_;
 672     const struct sbrec_logical_flow *lf1 = *lf1p;
 673     const struct sbrec_logical_flow *lf2 = *lf2p;
 674
 675     int pl1 = pipeline_encode(lf1->pipeline);
 676     int pl2 = pipeline_encode(lf2->pipeline);
 677
 678 #define CMP(expr) \
 679     do { \
 680         int res; \
 681         res = (expr); \
 682         if (res) { \
 683             return res; \
 684         } \
 685     } while (0)
 686
 687     CMP(uuid_compare_3way(&lf1->logical_datapath->header_.uuid,
 688                           &lf2->logical_datapath->header_.uuid));
 689     CMP(pl1 - pl2);
 690     CMP(lf1->table_id > lf2->table_id ? 1 :
 691             (lf1->table_id < lf2->table_id ? -1 : 0));
 692     CMP(lf1->priority > lf2->priority ? -1 :
 693             (lf1->priority < lf2->priority ? 1 : 0));
 694     CMP(strcmp(lf1->match, lf2->match));
 695
 696 #undef CMP
 697
 698     return 0;
 699 }
 700
 701 static void
 702 cmd_lflow_list(struct ctl_context *ctx)
 703 {
 704     const char *datapath = ctx->argc == 2 ? ctx->argv[1] : NULL;
 705     struct uuid datapath_uuid = { .parts = { 0, }};
 706     const struct sbrec_logical_flow **lflows;
 707     const struct sbrec_logical_flow *lflow;
 708     size_t n_flows = 0, n_capacity = 64;
 709
 710     if (datapath && !uuid_from_string(&datapath_uuid, datapath)) {
 711         VLOG_ERR("Invalid format of datapath UUID");
 712         return;
 713     }
 714
 715     lflows = xmalloc(sizeof *lflows * n_capacity);
 716     SBREC_LOGICAL_FLOW_FOR_EACH (lflow, ctx->idl) {
 717         if (n_flows == n_capacity) {
 718             lflows = x2nrealloc(lflows, &n_capacity, sizeof *lflows);
 719         }
 720         lflows[n_flows] = lflow;
 721         n_flows++;
 722     }
 723
 724     qsort(lflows, n_flows, sizeof *lflows, lflow_cmp);
 725
 726     const char *cur_pipeline = "";
 727     size_t i;
 728     for (i = 0; i < n_flows; i++) {
 729         lflow = lflows[i];
 730         if (datapath && !uuid_equals(&datapath_uuid,
 731                                      &lflow->logical_datapath->header_.uuid)) {
 732             continue;
 733         }
 734         if (strcmp(cur_pipeline, lflow->pipeline)) {
 735             printf("Datapath: " UUID_FMT "  Pipeline: %s\n",
 736                     UUID_ARGS(&lflow->logical_datapath->header_.uuid),
 737                     lflow->pipeline);
 738             cur_pipeline = lflow->pipeline;
 739         }
 740
 741         const char *table_name = smap_get(&lflow->external_ids, "stage-name");
 742         printf("  table=%" PRId64 "(%16s), priority=%5" PRId64
 743                ", match=(%s), action=(%s)\n",
 744                lflow->table_id, table_name ? table_name : "",
 745                lflow->priority, lflow->match, lflow->actions);
 746     }
 747
 748     free(lflows);
 749 }
 750
 751 \f
 752 static const struct ctl_table_class tables[] = {
 753     {&sbrec_table_chassis,
 754      {{&sbrec_table_chassis, &sbrec_chassis_col_name, NULL},
 755       {NULL, NULL, NULL}}},
 756
 757     {&sbrec_table_encap,
 758      {{NULL, NULL, NULL},
 759       {NULL, NULL, NULL}}},
 760
 761     {&sbrec_table_logical_flow,
 762      {{&sbrec_table_logical_flow, NULL,
 763        &sbrec_logical_flow_col_logical_datapath},
 764       {NULL, NULL, NULL}}},
 765
 766     {&sbrec_table_multicast_group,
 767      {{NULL, NULL, NULL},
 768       {NULL, NULL, NULL}}},
 769
 770     {&sbrec_table_datapath_binding,
 771      {{NULL, NULL, NULL},
 772       {NULL, NULL, NULL}}},
 773
 774     {&sbrec_table_port_binding,
 775      {{&sbrec_table_port_binding, &sbrec_port_binding_col_logical_port, NULL},
 776       {NULL, NULL, NULL}}},
 777
 778     {&sbrec_table_mac_binding,
 779      {{&sbrec_table_mac_binding, &sbrec_mac_binding_col_logical_port, NULL},
 780       {NULL, NULL, NULL}}},
 781
 782     {NULL, {{NULL, NULL, NULL}, {NULL, NULL, NULL}}}
 783 };
 784
 785 \f
 786 static void
 787 sbctl_context_init_command(struct sbctl_context *sbctl_ctx,
 788                            struct ctl_command *command)
 789 {
 790     ctl_context_init_command(&sbctl_ctx->base, command);
 791 }
 792
 793 static void
 794 sbctl_context_init(struct sbctl_context *sbctl_ctx,
 795                    struct ctl_command *command, struct ovsdb_idl *idl,
 796                    struct ovsdb_idl_txn *txn,
 797                    struct ovsdb_symbol_table *symtab)
 798 {
 799     ctl_context_init(&sbctl_ctx->base, command, idl, txn, symtab,
 800                      sbctl_context_invalidate_cache);
 801     sbctl_ctx->cache_valid = false;
 802 }
 803
 804 static void
 805 sbctl_context_done_command(struct sbctl_context *sbctl_ctx,
 806                            struct ctl_command *command)
 807 {
 808     ctl_context_done_command(&sbctl_ctx->base, command);
 809 }
 810
 811 static void
 812 sbctl_context_done(struct sbctl_context *sbctl_ctx,
 813                    struct ctl_command *command)
 814 {
 815     ctl_context_done(&sbctl_ctx->base, command);
 816 }
 817
 818 static void
 819 run_prerequisites(struct ctl_command *commands, size_t n_commands,
 820                   struct ovsdb_idl *idl)
 821 {
 822     struct ctl_command *c;
 823
 824     for (c = commands; c < &commands[n_commands]; c++) {
 825         if (c->syntax->prerequisites) {
 826             struct sbctl_context sbctl_ctx;
 827
 828             ds_init(&c->output);
 829             c->table = NULL;
 830
 831             sbctl_context_init(&sbctl_ctx, c, idl, NULL, NULL);
 832             (c->syntax->prerequisites)(&sbctl_ctx.base);
 833             sbctl_context_done(&sbctl_ctx, c);
 834
 835             ovs_assert(!c->output.string);
 836             ovs_assert(!c->table);
 837         }
 838     }
 839 }
 840
 841 static bool
 842 do_sbctl(const char *args, struct ctl_command *commands, size_t n_commands,
 843          struct ovsdb_idl *idl)
 844 {
 845     struct ovsdb_idl_txn *txn;
 846     enum ovsdb_idl_txn_status status;
 847     struct ovsdb_symbol_table *symtab;
 848     struct sbctl_context sbctl_ctx;
 849     struct ctl_command *c;
 850     struct shash_node *node;
 851     char *error = NULL;
 852
 853     txn = the_idl_txn = ovsdb_idl_txn_create(idl);
 854     if (dry_run) {
 855         ovsdb_idl_txn_set_dry_run(txn);
 856     }
 857
 858     ovsdb_idl_txn_add_comment(txn, "ovs-sbctl: %s", args);
 859
 860     symtab = ovsdb_symbol_table_create();
 861     for (c = commands; c < &commands[n_commands]; c++) {
 862         ds_init(&c->output);
 863         c->table = NULL;
 864     }
 865     sbctl_context_init(&sbctl_ctx, NULL, idl, txn, symtab);
 866     for (c = commands; c < &commands[n_commands]; c++) {
 867         sbctl_context_init_command(&sbctl_ctx, c);
 868         if (c->syntax->run) {
 869             (c->syntax->run)(&sbctl_ctx.base);
 870         }
 871         sbctl_context_done_command(&sbctl_ctx, c);
 872
 873         if (sbctl_ctx.base.try_again) {
 874             sbctl_context_done(&sbctl_ctx, NULL);
 875             goto try_again;
 876         }
 877     }
 878     sbctl_context_done(&sbctl_ctx, NULL);
 879
 880     SHASH_FOR_EACH (node, &symtab->sh) {
 881         struct ovsdb_symbol *symbol = node->data;
 882         if (!symbol->created) {
 883             ctl_fatal("row id \"%s\" is referenced but never created (e.g. "
 884                       "with \"-- --id=%s create ...\")",
 885                       node->name, node->name);
 886         }
 887         if (!symbol->strong_ref) {
 888             if (!symbol->weak_ref) {
 889                 VLOG_WARN("row id \"%s\" was created but no reference to it "
 890                           "was inserted, so it will not actually appear in "
 891                           "the database", node->name);
 892             } else {
 893                 VLOG_WARN("row id \"%s\" was created but only a weak "
 894                           "reference to it was inserted, so it will not "
 895                           "actually appear in the database", node->name);
 896             }
 897         }
 898     }
 899
 900     status = ovsdb_idl_txn_commit_block(txn);
 901     if (status == TXN_UNCHANGED || status == TXN_SUCCESS) {
 902         for (c = commands; c < &commands[n_commands]; c++) {
 903             if (c->syntax->postprocess) {
 904                 sbctl_context_init(&sbctl_ctx, c, idl, txn, symtab);
 905                 (c->syntax->postprocess)(&sbctl_ctx.base);
 906                 sbctl_context_done(&sbctl_ctx, c);
 907             }
 908         }
 909     }
 910     error = xstrdup(ovsdb_idl_txn_get_error(txn));
 911
 912     switch (status) {
 913     case TXN_UNCOMMITTED:
 914     case TXN_INCOMPLETE:
 915         OVS_NOT_REACHED();
 916
 917     case TXN_ABORTED:
 918         /* Should not happen--we never call ovsdb_idl_txn_abort(). */
 919         ctl_fatal("transaction aborted");
 920
 921     case TXN_UNCHANGED:
 922     case TXN_SUCCESS:
 923         break;
 924
 925     case TXN_TRY_AGAIN:
 926         goto try_again;
 927
 928     case TXN_ERROR:
 929         ctl_fatal("transaction error: %s", error);
 930
 931     case TXN_NOT_LOCKED:
 932         /* Should not happen--we never call ovsdb_idl_set_lock(). */
 933         ctl_fatal("database not locked");
 934
 935     default:
 936         OVS_NOT_REACHED();
 937     }
 938     free(error);
 939
 940     ovsdb_symbol_table_destroy(symtab);
 941
 942     for (c = commands; c < &commands[n_commands]; c++) {
 943         struct ds *ds = &c->output;
 944
 945         if (c->table) {
 946             table_print(c->table, &table_style);
 947         } else if (oneline) {
 948             size_t j;
 949
 950             ds_chomp(ds, '\n');
 951             for (j = 0; j < ds->length; j++) {
 952                 int ch = ds->string[j];
 953                 switch (ch) {
 954                 case '\n':
 955                     fputs("\\n", stdout);
 956                     break;
 957
 958                 case '\\':
 959                     fputs("\\\\", stdout);
 960                     break;
 961
 962                 default:
 963                     putchar(ch);
 964                 }
 965             }
 966             putchar('\n');
 967         } else {
 968             fputs(ds_cstr(ds), stdout);
 969         }
 970         ds_destroy(&c->output);
 971         table_destroy(c->table);
 972         free(c->table);
 973
 974         shash_destroy_free_data(&c->options);
 975     }
 976     free(commands);
 977     ovsdb_idl_txn_destroy(txn);
 978     ovsdb_idl_destroy(idl);
 979
 980     return true;
 981
 982 try_again:
 983     /* Our transaction needs to be rerun, or a prerequisite was not met.  Free
 984      * resources and return so that the caller can try again. */
 985     if (txn) {
 986         ovsdb_idl_txn_abort(txn);
 987         ovsdb_idl_txn_destroy(txn);
 988         the_idl_txn = NULL;
 989     }
 990     ovsdb_symbol_table_destroy(symtab);
 991     for (c = commands; c < &commands[n_commands]; c++) {
 992         ds_destroy(&c->output);
 993         table_destroy(c->table);
 994         free(c->table);
 995     }
 996     free(error);
 997     return false;
 998 }
 999
1000 /* Frees the current transaction and the underlying IDL and then calls
1001  * exit(status).
1002  *
1003  * Freeing the transaction and the IDL is not strictly necessary, but it makes
1004  * for a clean memory leak report from valgrind in the normal case.  That makes
1005  * it easier to notice real memory leaks. */
1006 static void
1007 sbctl_exit(int status)
1008 {
1009     if (the_idl_txn) {
1010         ovsdb_idl_txn_abort(the_idl_txn);
1011         ovsdb_idl_txn_destroy(the_idl_txn);
1012     }
1013     ovsdb_idl_destroy(the_idl);
1014     exit(status);
1015 }
1016
1017 static const struct ctl_command_syntax sbctl_commands[] = {
1018     /* Chassis commands. */
1019     {"chassis-add", 3, 3, "CHASSIS ENCAP-TYPE ENCAP-IP", pre_get_info,
1020      cmd_chassis_add, NULL, "--may-exist", RW},
1021     {"chassis-del", 1, 1, "CHASSIS", pre_get_info, cmd_chassis_del, NULL,
1022      "--if-exists", RW},
1023
1024     /* Port binding commands. */
1025     {"lport-bind", 2, 2, "LPORT CHASSIS", pre_get_info, cmd_lport_bind, NULL,
1026      "--may-exist", RW},
1027     {"lport-unbind", 1, 1, "LPORT", pre_get_info, cmd_lport_unbind, NULL,
1028      "--if-exists", RW},
1029
1030     /* Logical flow commands */
1031     {"lflow-list", 0, 1, "[DATAPATH]", pre_get_info, cmd_lflow_list, NULL,
1032      "", RO},
1033     {"dump-flows", 0, 1, "[DATAPATH]", pre_get_info, cmd_lflow_list, NULL,
1034      "", RO}, /* Friendly alias for lflow-list */
1035
1036     /* SSL commands (To Be Added). */
1037
1038     {NULL, 0, 0, NULL, NULL, NULL, NULL, NULL, RO},
1039 };
1040
1041 /* Registers sbctl and common db commands. */
1042 static void
1043 sbctl_cmd_init(void)
1044 {
1045     ctl_init(tables, cmd_show_tables, sbctl_exit);
1046     ctl_register_commands(sbctl_commands);
1047 }