1 /* Copyright (c) 2009, 2010, 2011 Nicira Networks
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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
26 #include "command-line.h"
31 #include "jsonrpc-server.h"
32 #include "leak-checker.h"
34 #include "ovsdb-data.h"
35 #include "ovsdb-types.h"
36 #include "ovsdb-error.h"
37 #include "poll-loop.h"
40 #include "stream-ssl.h"
46 #include "transaction.h"
52 VLOG_DEFINE_THIS_MODULE(ovsdb_server);
55 /* SSL configuration. */
56 static char *private_key_file;
57 static char *certificate_file;
58 static char *ca_cert_file;
59 static bool bootstrap_ca_cert;
62 static unixctl_cb_func ovsdb_server_exit;
63 static unixctl_cb_func ovsdb_server_compact;
64 static unixctl_cb_func ovsdb_server_reconnect;
66 static void parse_options(int argc, char *argv[], char **file_namep,
67 struct shash *remotes, char **unixctl_pathp,
69 static void usage(void) NO_RETURN;
71 static void reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
72 const struct ovsdb *db, struct shash *remotes);
74 static void update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
75 const struct shash *remotes,
79 main(int argc, char *argv[])
81 char *unixctl_path = NULL;
82 char *run_command = NULL;
83 struct unixctl_server *unixctl;
84 struct ovsdb_jsonrpc_server *jsonrpc;
86 struct ovsdb_error *error;
87 struct ovsdb_file *file;
89 struct process *run_process;
93 long long int status_timer = LLONG_MIN;
95 proctitle_init(argc, argv);
96 set_program_name(argv[0]);
97 stress_init_command();
98 signal(SIGPIPE, SIG_IGN);
101 parse_options(argc, argv, &file_name, &remotes, &unixctl_path,
104 die_if_already_running();
107 error = ovsdb_file_open(file_name, false, &db, &file);
109 ovs_fatal(0, "%s", ovsdb_error_to_string(error));
112 jsonrpc = ovsdb_jsonrpc_server_create(db);
113 reconfigure_from_db(jsonrpc, db, &remotes);
115 retval = unixctl_server_create(unixctl_path, &unixctl);
123 run_argv[0] = "/bin/sh";
125 run_argv[2] = run_command;
128 retval = process_start(run_argv, NULL, 0, NULL, 0, &run_process);
130 ovs_fatal(retval, "%s: process failed to start", run_command);
136 daemonize_complete();
138 unixctl_command_register("exit", ovsdb_server_exit, &exiting);
139 unixctl_command_register("ovsdb-server/compact", ovsdb_server_compact,
141 unixctl_command_register("ovsdb-server/reconnect", ovsdb_server_reconnect,
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)) {
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);
160 ovsdb_jsonrpc_server_wait(jsonrpc);
161 unixctl_server_wait(unixctl);
162 ovsdb_trigger_wait(db, time_msec());
164 process_wait(run_process);
167 poll_immediate_wake();
169 poll_timer_wait_until(status_timer);
172 ovsdb_jsonrpc_server_destroy(jsonrpc);
174 shash_destroy_free_data(&remotes);
175 unixctl_server_destroy(unixctl);
177 if (run_process && process_exited(run_process)) {
178 int status = process_status(run_process);
180 ovs_fatal(0, "%s: child exited, %s",
181 run_command, process_status_msg(status));
189 parse_db_column(const struct ovsdb *db,
191 const struct ovsdb_table **tablep,
192 const struct ovsdb_column **columnp)
194 char *name, *table_name, *column_name;
195 const struct ovsdb_column *column;
196 const struct ovsdb_table *table;
197 char *save_ptr = NULL;
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_);
207 table = ovsdb_get_table(db, table_name);
209 ovs_fatal(0, "\"%s\": no table named %s", name_, table_name);
212 column = ovsdb_table_schema_get_column(table->schema, column_name);
214 ovs_fatal(0, "\"%s\": table \"%s\" has no column \"%s\"",
215 name_, table_name, column_name);
224 parse_db_string_column(const struct ovsdb *db,
226 const struct ovsdb_table **tablep,
227 const struct ovsdb_column **columnp)
229 const struct ovsdb_column *column;
230 const struct ovsdb_table *table;
232 parse_db_column(db, name, &table, &column);
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);
245 static OVS_UNUSED const char *
246 query_db_string(const struct ovsdb *db, const char *name)
248 if (!name || strncmp(name, "db:", 3)) {
251 const struct ovsdb_column *column;
252 const struct ovsdb_table *table;
253 const struct ovsdb_row *row;
255 parse_db_string_column(db, name, &table, &column);
257 HMAP_FOR_EACH (row, hmap_node, &table->rows) {
258 const struct ovsdb_datum *datum;
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;
272 static struct ovsdb_jsonrpc_options *
273 add_remote(struct shash *remotes, const char *target)
275 struct ovsdb_jsonrpc_options *options;
277 options = shash_find_data(remotes, target);
279 options = ovsdb_jsonrpc_default_options();
280 shash_add(remotes, target, options);
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,
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;
296 column = ovsdb_table_schema_get_column(schema, column_name);
298 VLOG_DBG_RL(&rl, "Table `%s' has no `%s' column",
299 schema->name, column_name);
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),
319 return &row->fields[column->index];
322 static const union ovsdb_atom *
323 read_column(const struct ovsdb_row *row, const char *column_name,
324 enum ovsdb_atomic_type type)
326 const struct ovsdb_datum *datum;
328 datum = get_datum((struct ovsdb_row *) row, column_name, type, OVSDB_TYPE_VOID, 1);
329 return datum && datum->n ? datum->keys : NULL;
333 read_integer_column(const struct ovsdb_row *row, const char *column_name,
334 long long int *integerp)
336 const union ovsdb_atom *atom;
338 atom = read_column(row, column_name, OVSDB_TYPE_INTEGER);
339 *integerp = atom ? atom->integer : 0;
344 read_string_column(const struct ovsdb_row *row, const char *column_name,
345 const char **stringp)
347 const union ovsdb_atom *atom;
349 atom = read_column(row, column_name, OVSDB_TYPE_STRING);
350 *stringp = atom ? atom->string : 0;
355 write_bool_column(struct ovsdb_row *row, const char *column_name, bool value)
357 struct ovsdb_datum *datum = get_datum(row, column_name, OVSDB_TYPE_BOOLEAN,
363 datum->keys[0].boolean = value;
367 write_string_string_column(struct ovsdb_row *row, const char *column_name,
368 char **keys, char **values, size_t n)
370 const struct ovsdb_column *column;
371 struct ovsdb_datum *datum;
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,
381 /* Free existing data. */
382 ovsdb_datum_destroy(datum, &column->type);
384 /* Allocate space for new values. */
386 datum->keys = xmalloc(n * sizeof *datum->keys);
387 datum->values = xmalloc(n * sizeof *datum->values);
389 for (i = 0; i < n; ++i) {
390 datum->keys[i].string = keys[i];
391 datum->values[i].string = values[i];
394 /* Sort and check constraints. */
395 ovsdb_datum_sort_assert(datum, column->type.key.type);
398 /* Adds a remote and options to 'remotes', based on the Manager table row in
401 add_manager_options(struct shash *remotes, const struct ovsdb_row *row)
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;
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);
414 options = add_remote(remotes, target);
415 if (read_integer_column(row, "max_backoff", &max_backoff)) {
416 options->max_backoff = max_backoff;
418 if (read_integer_column(row, "inactivity_probe", &probe_interval)) {
419 options->probe_interval = probe_interval;
424 query_db_remotes(const char *name, const struct ovsdb *db,
425 struct shash *remotes)
427 const struct ovsdb_column *column;
428 const struct ovsdb_table *table;
429 const struct ovsdb_row *row;
431 parse_db_column(db, name, &table, &column);
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;
439 datum = &row->fields[column->index];
440 for (i = 0; i < datum->n; i++) {
441 add_remote(remotes, datum->keys[i].string);
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;
452 datum = &row->fields[column->index];
453 for (i = 0; i < datum->n; i++) {
454 const struct ovsdb_row *ref_row;
456 ref_row = ovsdb_table_get_row(ref_table, &datum->keys[i].uuid);
458 add_manager_options(remotes, ref_row);
466 update_remote_row(const struct ovsdb_row *row, struct ovsdb_txn *txn,
467 const struct shash *statuses)
469 struct ovsdb_row *rw_row;
471 const struct ovsdb_jsonrpc_remote_status *status;
472 char *keys[3], *values[3];
475 /* Get the "target" (protocol/host/port) spec. */
476 if (!read_string_column(row, "target", &target)) {
477 /* Bad remote spec or incorrect schema. */
481 /* Prepare to modify this row. */
482 rw_row = ovsdb_txn_row_modify(txn, row);
484 /* Find status information for this target. */
485 status = shash_find_data(statuses, target);
487 /* Should never happen, but just in case... */
491 /* Update status information columns. */
493 write_bool_column(rw_row, "is_connected",
494 status->is_connected);
496 keys[n] = xstrdup("state");
497 values[n++] = xstrdup(status->state);
498 keys[n] = xstrdup(status->is_connected ? "time_connected"
499 : "time_disconnected");
500 values[n++] = xasprintf("%u", status->conn_secs);
501 if (status->last_error) {
502 keys[n] = xstrdup("last_error");
504 xstrdup(ovs_retval_to_string(status->last_error));
506 write_string_string_column(rw_row, "status", keys, values, n);
510 update_remote_rows(const struct ovsdb *db, struct ovsdb_txn *txn,
511 const char *remote_name, const struct shash *statuses)
513 const struct ovsdb_table *table, *ref_table;
514 const struct ovsdb_column *column;
515 const struct ovsdb_row *row;
517 if (strncmp("db:", remote_name, 3)) {
521 parse_db_column(db, remote_name, &table, &column);
523 if (column->type.key.type != OVSDB_TYPE_UUID
524 || !column->type.key.u.uuid.refTable
525 || column->type.value.type != OVSDB_TYPE_VOID) {
529 ref_table = column->type.key.u.uuid.refTable;
531 HMAP_FOR_EACH (row, hmap_node, &table->rows) {
532 const struct ovsdb_datum *datum;
535 datum = &row->fields[column->index];
536 for (i = 0; i < datum->n; i++) {
537 const struct ovsdb_row *ref_row;
539 ref_row = ovsdb_table_get_row(ref_table, &datum->keys[i].uuid);
541 update_remote_row(ref_row, txn, statuses);
548 update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
549 const struct shash *remotes, struct ovsdb *db)
551 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
552 struct shash_node *remote;
553 struct shash statuses;
554 struct ovsdb_txn *txn;
555 const bool durable_txn = false;
556 struct ovsdb_error *error;
558 /* Get status of current connections. */
559 ovsdb_jsonrpc_server_get_remote_status(jsonrpc, &statuses);
561 txn = ovsdb_txn_create(db);
563 /* Iterate over --remote arguments given on command line. */
564 SHASH_FOR_EACH (remote, remotes) {
565 update_remote_rows(db, txn, remote->name, &statuses);
568 error = ovsdb_txn_commit(txn, durable_txn);
570 VLOG_ERR_RL(&rl, "Failed to update remote status: %s",
571 ovsdb_error_to_string(error));
574 shash_destroy_free_data(&statuses);
577 /* Reconfigures ovsdb-server based on information in the database. */
579 reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
580 const struct ovsdb *db, struct shash *remotes)
582 struct shash resolved_remotes;
583 struct shash_node *node;
585 /* Configure remotes. */
586 shash_init(&resolved_remotes);
587 SHASH_FOR_EACH (node, remotes) {
588 const char *name = node->name;
590 if (!strncmp(name, "db:", 3)) {
591 query_db_remotes(name, db, &resolved_remotes);
593 add_remote(&resolved_remotes, name);
596 ovsdb_jsonrpc_server_set_remotes(jsonrpc, &resolved_remotes);
597 shash_destroy_free_data(&resolved_remotes);
601 stream_ssl_set_key_and_cert(query_db_string(db, private_key_file),
602 query_db_string(db, certificate_file));
603 stream_ssl_set_ca_cert_file(query_db_string(db, ca_cert_file),
609 ovsdb_server_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
612 bool *exiting = exiting_;
614 unixctl_command_reply(conn, 200, NULL);
618 ovsdb_server_compact(struct unixctl_conn *conn, const char *args OVS_UNUSED,
621 struct ovsdb_file *file = file_;
622 struct ovsdb_error *error;
624 VLOG_INFO("compacting database by user request");
625 error = ovsdb_file_compact(file);
627 unixctl_command_reply(conn, 200, NULL);
629 char *s = ovsdb_error_to_string(error);
630 ovsdb_error_destroy(error);
631 unixctl_command_reply(conn, 503, s);
636 /* "ovsdb-server/reconnect": makes ovsdb-server drop all of its JSON-RPC
637 * connections and reconnect. */
639 ovsdb_server_reconnect(struct unixctl_conn *conn, const char *args OVS_UNUSED,
642 struct ovsdb_jsonrpc_server *jsonrpc = jsonrpc_;
644 ovsdb_jsonrpc_server_reconnect(jsonrpc);
645 unixctl_command_reply(conn, 200, NULL);
649 parse_options(int argc, char *argv[], char **file_namep,
650 struct shash *remotes, char **unixctl_pathp,
654 OPT_DUMMY = UCHAR_MAX + 1,
658 OPT_BOOTSTRAP_CA_CERT,
660 LEAK_CHECKER_OPTION_ENUMS,
663 static struct option long_options[] = {
664 {"remote", required_argument, 0, OPT_REMOTE},
665 {"unixctl", required_argument, 0, OPT_UNIXCTL},
666 {"run", required_argument, 0, OPT_RUN},
667 {"help", no_argument, 0, 'h'},
668 {"version", no_argument, 0, 'V'},
671 LEAK_CHECKER_LONG_OPTIONS,
673 {"bootstrap-ca-cert", required_argument, 0, OPT_BOOTSTRAP_CA_CERT},
674 {"private-key", required_argument, 0, 'p'},
675 {"certificate", required_argument, 0, 'c'},
676 {"ca-cert", required_argument, 0, 'C'},
680 char *short_options = long_options_to_short_options(long_options);
686 c = getopt_long(argc, argv, short_options, long_options, NULL);
693 shash_add_once(remotes, optarg, NULL);
697 *unixctl_pathp = optarg;
701 *run_command = optarg;
708 OVS_PRINT_VERSION(0, 0);
712 DAEMON_OPTION_HANDLERS
713 LEAK_CHECKER_OPTION_HANDLERS
717 private_key_file = optarg;
721 certificate_file = optarg;
725 ca_cert_file = optarg;
726 bootstrap_ca_cert = false;
729 case OPT_BOOTSTRAP_CA_CERT:
730 ca_cert_file = optarg;
731 bootstrap_ca_cert = true;
748 ovs_fatal(0, "database file is only non-option argument; "
749 "use --help for usage");
750 } else if (argc < 1) {
751 ovs_fatal(0, "missing database file argument; use --help for usage");
754 *file_namep = argv[0];
760 printf("%s: Open vSwitch database server\n"
761 "usage: %s [OPTIONS] DATABASE\n"
762 "where DATABASE is a database file in ovsdb format.\n",
763 program_name, program_name);
764 printf("\nJSON-RPC options (may be specified any number of times):\n"
765 " --remote=REMOTE connect or listen to REMOTE\n");
766 stream_usage("JSON-RPC", true, true, true);
769 printf("\nOther options:\n"
770 " --run COMMAND run COMMAND as subprocess then exit\n"
771 " --unixctl=SOCKET override default control socket name\n"
772 " -h, --help display this help message\n"
773 " -V, --version display version information\n");
774 leak_checker_usage();