1 /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
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.
18 #include "jsonrpc-server.h"
24 #include "openvswitch/dynamic-string.h"
26 #include "openvswitch/json.h"
28 #include "ovsdb-error.h"
29 #include "ovsdb-parser.h"
31 #include "condition.h"
32 #include "poll-loop.h"
33 #include "reconnect.h"
40 #include "transaction.h"
43 #include "openvswitch/vlog.h"
45 VLOG_DEFINE_THIS_MODULE(ovsdb_jsonrpc_server);
47 struct ovsdb_jsonrpc_remote;
48 struct ovsdb_jsonrpc_session;
50 /* Set false to defeature monitor_cond, causing jsonrpc to respond to
51 * monitor_cond method with an error. */
52 static bool monitor_cond_enable__ = true;
54 /* Message rate-limiting. */
55 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
58 static struct ovsdb_jsonrpc_session *ovsdb_jsonrpc_session_create(
59 struct ovsdb_jsonrpc_remote *, struct jsonrpc_session *);
60 static void ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *);
61 static void ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *);
62 static void ovsdb_jsonrpc_session_get_memory_usage_all(
63 const struct ovsdb_jsonrpc_remote *, struct simap *usage);
64 static void ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *);
65 static void ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *);
66 static void ovsdb_jsonrpc_session_set_all_options(
67 struct ovsdb_jsonrpc_remote *, const struct ovsdb_jsonrpc_options *);
68 static bool ovsdb_jsonrpc_active_session_get_status(
69 const struct ovsdb_jsonrpc_remote *,
70 struct ovsdb_jsonrpc_remote_status *);
71 static void ovsdb_jsonrpc_session_get_status(
72 const struct ovsdb_jsonrpc_session *,
73 struct ovsdb_jsonrpc_remote_status *);
74 static void ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *);
75 static void ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *);
76 static void ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *,
77 struct jsonrpc_msg *);
80 static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *,
82 struct json *id, struct json *params);
83 static struct ovsdb_jsonrpc_trigger *ovsdb_jsonrpc_trigger_find(
84 struct ovsdb_jsonrpc_session *, const struct json *id, size_t hash);
85 static void ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *);
86 static void ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *);
87 static void ovsdb_jsonrpc_trigger_complete_done(
88 struct ovsdb_jsonrpc_session *);
91 static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_create(
92 struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params,
93 enum ovsdb_monitor_version, const struct json *request_id);
94 static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cond_change(
95 struct ovsdb_jsonrpc_session *s,
97 const struct json *request_id);
98 static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cancel(
99 struct ovsdb_jsonrpc_session *,
100 struct json_array *params,
101 const struct json *request_id);
102 static void ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *);
103 static void ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *);
104 static bool ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *);
105 static struct json *ovsdb_jsonrpc_monitor_compose_update(
106 struct ovsdb_jsonrpc_monitor *monitor, bool initial);
107 static struct jsonrpc_msg * ovsdb_jsonrpc_create_notify(
108 const struct ovsdb_jsonrpc_monitor *m,
109 struct json *params);
112 /* JSON-RPC database server. */
114 struct ovsdb_jsonrpc_server {
115 struct ovsdb_server up;
116 unsigned int n_sessions;
117 struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */
120 /* A configured remote. This is either a passive stream listener plus a list
121 * of the currently connected sessions, or a list of exactly one active
123 struct ovsdb_jsonrpc_remote {
124 struct ovsdb_jsonrpc_server *server;
125 struct pstream *listener; /* Listener, if passive. */
126 struct ovs_list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */
130 static struct ovsdb_jsonrpc_remote *ovsdb_jsonrpc_server_add_remote(
131 struct ovsdb_jsonrpc_server *, const char *name,
132 const struct ovsdb_jsonrpc_options *options
134 static void ovsdb_jsonrpc_server_del_remote(struct shash_node *);
136 /* Creates and returns a new server to provide JSON-RPC access to an OVSDB.
138 * The caller must call ovsdb_jsonrpc_server_add_db() for each database to
139 * which 'server' should provide access. */
140 struct ovsdb_jsonrpc_server *
141 ovsdb_jsonrpc_server_create(void)
143 struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
144 ovsdb_server_init(&server->up);
145 shash_init(&server->remotes);
149 /* Adds 'db' to the set of databases served out by 'svr'. Returns true if
150 * successful, false if 'db''s name is the same as some database already in
153 ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *svr, struct ovsdb *db)
155 /* The OVSDB protocol doesn't have a way to notify a client that a
156 * database has been added. If some client tried to use the database
157 * that we're adding and failed, then forcing it to reconnect seems like
158 * a reasonable way to make it try again.
160 * If this is too big of a hammer in practice, we could be more selective,
161 * e.g. disconnect only connections that actually tried to use a database
162 * with 'db''s name. */
163 ovsdb_jsonrpc_server_reconnect(svr);
165 return ovsdb_server_add_db(&svr->up, db);
168 /* Removes 'db' from the set of databases served out by 'svr'. Returns
169 * true if successful, false if there is no database associated with 'db'. */
171 ovsdb_jsonrpc_server_remove_db(struct ovsdb_jsonrpc_server *svr,
174 /* There might be pointers to 'db' from 'svr', such as monitors or
175 * outstanding transactions. Disconnect all JSON-RPC connections to avoid
176 * accesses to freed memory.
178 * If this is too big of a hammer in practice, we could be more selective,
179 * e.g. disconnect only connections that actually reference 'db'. */
180 ovsdb_jsonrpc_server_reconnect(svr);
182 return ovsdb_server_remove_db(&svr->up, db);
186 ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr)
188 struct shash_node *node, *next;
190 SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
191 ovsdb_jsonrpc_server_del_remote(node);
193 shash_destroy(&svr->remotes);
194 ovsdb_server_destroy(&svr->up);
198 struct ovsdb_jsonrpc_options *
199 ovsdb_jsonrpc_default_options(const char *target)
201 struct ovsdb_jsonrpc_options *options = xzalloc(sizeof *options);
202 options->max_backoff = RECONNECT_DEFAULT_MAX_BACKOFF;
203 options->probe_interval = (stream_or_pstream_needs_probes(target)
204 ? RECONNECT_DEFAULT_PROBE_INTERVAL
209 /* Sets 'svr''s current set of remotes to the names in 'new_remotes', with
210 * options in the struct ovsdb_jsonrpc_options supplied as the data values.
212 * A remote is an active or passive stream connection method, e.g. "pssl:" or
215 ovsdb_jsonrpc_server_set_remotes(struct ovsdb_jsonrpc_server *svr,
216 const struct shash *new_remotes)
218 struct shash_node *node, *next;
220 SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
221 struct ovsdb_jsonrpc_remote *remote = node->data;
222 struct ovsdb_jsonrpc_options *options
223 = shash_find_data(new_remotes, node->name);
226 VLOG_INFO("%s: remote deconfigured", node->name);
227 ovsdb_jsonrpc_server_del_remote(node);
228 } else if (options->dscp != remote->dscp) {
229 ovsdb_jsonrpc_server_del_remote(node);
232 SHASH_FOR_EACH (node, new_remotes) {
233 const struct ovsdb_jsonrpc_options *options = node->data;
234 struct ovsdb_jsonrpc_remote *remote;
236 remote = shash_find_data(&svr->remotes, node->name);
238 remote = ovsdb_jsonrpc_server_add_remote(svr, node->name, options);
244 ovsdb_jsonrpc_session_set_all_options(remote, options);
248 static struct ovsdb_jsonrpc_remote *
249 ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *svr,
251 const struct ovsdb_jsonrpc_options *options)
253 struct ovsdb_jsonrpc_remote *remote;
254 struct pstream *listener;
257 error = jsonrpc_pstream_open(name, &listener, options->dscp);
258 if (error && error != EAFNOSUPPORT) {
259 VLOG_ERR_RL(&rl, "%s: listen failed: %s", name, ovs_strerror(error));
263 remote = xmalloc(sizeof *remote);
264 remote->server = svr;
265 remote->listener = listener;
266 ovs_list_init(&remote->sessions);
267 remote->dscp = options->dscp;
268 shash_add(&svr->remotes, name, remote);
271 ovsdb_jsonrpc_session_create(remote, jsonrpc_session_open(name, true));
277 ovsdb_jsonrpc_server_del_remote(struct shash_node *node)
279 struct ovsdb_jsonrpc_remote *remote = node->data;
281 ovsdb_jsonrpc_session_close_all(remote);
282 pstream_close(remote->listener);
283 shash_delete(&remote->server->remotes, node);
287 /* Stores status information for the remote named 'target', which should have
288 * been configured on 'svr' with a call to ovsdb_jsonrpc_server_set_remotes(),
289 * into '*status'. On success returns true, on failure (if 'svr' doesn't have
290 * a remote named 'target' or if that remote is an outbound remote that has no
291 * active connections) returns false. On failure, 'status' will be zeroed.
294 ovsdb_jsonrpc_server_get_remote_status(
295 const struct ovsdb_jsonrpc_server *svr, const char *target,
296 struct ovsdb_jsonrpc_remote_status *status)
298 const struct ovsdb_jsonrpc_remote *remote;
300 memset(status, 0, sizeof *status);
302 remote = shash_find_data(&svr->remotes, target);
308 if (remote->listener) {
309 status->bound_port = pstream_get_bound_port(remote->listener);
310 status->is_connected = !ovs_list_is_empty(&remote->sessions);
311 status->n_connections = ovs_list_size(&remote->sessions);
315 return ovsdb_jsonrpc_active_session_get_status(remote, status);
319 ovsdb_jsonrpc_server_free_remote_status(
320 struct ovsdb_jsonrpc_remote_status *status)
322 free(status->locks_held);
323 free(status->locks_waiting);
324 free(status->locks_lost);
327 /* Forces all of the JSON-RPC sessions managed by 'svr' to disconnect and
330 ovsdb_jsonrpc_server_reconnect(struct ovsdb_jsonrpc_server *svr)
332 struct shash_node *node;
334 SHASH_FOR_EACH (node, &svr->remotes) {
335 struct ovsdb_jsonrpc_remote *remote = node->data;
337 ovsdb_jsonrpc_session_reconnect_all(remote);
342 ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr)
344 struct shash_node *node;
346 SHASH_FOR_EACH (node, &svr->remotes) {
347 struct ovsdb_jsonrpc_remote *remote = node->data;
349 if (remote->listener) {
350 struct stream *stream;
353 error = pstream_accept(remote->listener, &stream);
355 struct jsonrpc_session *js;
356 js = jsonrpc_session_open_unreliably(jsonrpc_open(stream),
358 ovsdb_jsonrpc_session_create(remote, js);
359 } else if (error != EAGAIN) {
360 VLOG_WARN_RL(&rl, "%s: accept failed: %s",
361 pstream_get_name(remote->listener),
362 ovs_strerror(error));
366 ovsdb_jsonrpc_session_run_all(remote);
371 ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr)
373 struct shash_node *node;
375 SHASH_FOR_EACH (node, &svr->remotes) {
376 struct ovsdb_jsonrpc_remote *remote = node->data;
378 if (remote->listener) {
379 pstream_wait(remote->listener);
382 ovsdb_jsonrpc_session_wait_all(remote);
386 /* Adds some memory usage statistics for 'svr' into 'usage', for use with
387 * memory_report(). */
389 ovsdb_jsonrpc_server_get_memory_usage(const struct ovsdb_jsonrpc_server *svr,
392 struct shash_node *node;
394 simap_increase(usage, "sessions", svr->n_sessions);
395 SHASH_FOR_EACH (node, &svr->remotes) {
396 struct ovsdb_jsonrpc_remote *remote = node->data;
398 ovsdb_jsonrpc_session_get_memory_usage_all(remote, usage);
402 /* JSON-RPC database server session. */
404 struct ovsdb_jsonrpc_session {
405 struct ovs_list node; /* Element in remote's sessions list. */
406 struct ovsdb_session up;
407 struct ovsdb_jsonrpc_remote *remote;
410 struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */
413 struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"s. */
415 /* Network connectivity. */
416 struct jsonrpc_session *js; /* JSON-RPC session. */
417 unsigned int js_seqno; /* Last jsonrpc_session_get_seqno() value. */
420 static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *);
421 static int ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *);
422 static void ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *);
423 static void ovsdb_jsonrpc_session_get_memory_usage(
424 const struct ovsdb_jsonrpc_session *, struct simap *usage);
425 static void ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *,
426 struct jsonrpc_msg *);
427 static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
428 struct jsonrpc_msg *);
430 static struct ovsdb_jsonrpc_session *
431 ovsdb_jsonrpc_session_create(struct ovsdb_jsonrpc_remote *remote,
432 struct jsonrpc_session *js)
434 struct ovsdb_jsonrpc_session *s;
436 s = xzalloc(sizeof *s);
437 ovsdb_session_init(&s->up, &remote->server->up);
439 ovs_list_push_back(&remote->sessions, &s->node);
440 hmap_init(&s->triggers);
441 hmap_init(&s->monitors);
443 s->js_seqno = jsonrpc_session_get_seqno(js);
445 remote->server->n_sessions++;
451 ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *s)
453 ovsdb_jsonrpc_monitor_remove_all(s);
454 ovsdb_jsonrpc_session_unlock_all(s);
455 ovsdb_jsonrpc_trigger_complete_all(s);
457 hmap_destroy(&s->monitors);
458 hmap_destroy(&s->triggers);
460 jsonrpc_session_close(s->js);
461 ovs_list_remove(&s->node);
462 s->remote->server->n_sessions--;
463 ovsdb_session_destroy(&s->up);
468 ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *s)
470 jsonrpc_session_run(s->js);
471 if (s->js_seqno != jsonrpc_session_get_seqno(s->js)) {
472 s->js_seqno = jsonrpc_session_get_seqno(s->js);
473 ovsdb_jsonrpc_trigger_complete_all(s);
474 ovsdb_jsonrpc_monitor_remove_all(s);
475 ovsdb_jsonrpc_session_unlock_all(s);
478 ovsdb_jsonrpc_trigger_complete_done(s);
480 if (!jsonrpc_session_get_backlog(s->js)) {
481 struct jsonrpc_msg *msg;
483 ovsdb_jsonrpc_monitor_flush_all(s);
485 msg = jsonrpc_session_recv(s->js);
487 if (msg->type == JSONRPC_REQUEST) {
488 ovsdb_jsonrpc_session_got_request(s, msg);
489 } else if (msg->type == JSONRPC_NOTIFY) {
490 ovsdb_jsonrpc_session_got_notify(s, msg);
492 VLOG_WARN("%s: received unexpected %s message",
493 jsonrpc_session_get_name(s->js),
494 jsonrpc_msg_type_to_string(msg->type));
495 jsonrpc_session_force_reconnect(s->js);
496 jsonrpc_msg_destroy(msg);
500 return jsonrpc_session_is_alive(s->js) ? 0 : ETIMEDOUT;
504 ovsdb_jsonrpc_session_set_options(struct ovsdb_jsonrpc_session *session,
505 const struct ovsdb_jsonrpc_options *options)
507 jsonrpc_session_set_max_backoff(session->js, options->max_backoff);
508 jsonrpc_session_set_probe_interval(session->js, options->probe_interval);
509 jsonrpc_session_set_dscp(session->js, options->dscp);
513 ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *remote)
515 struct ovsdb_jsonrpc_session *s, *next;
517 LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
518 int error = ovsdb_jsonrpc_session_run(s);
520 ovsdb_jsonrpc_session_close(s);
526 ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *s)
528 jsonrpc_session_wait(s->js);
529 if (!jsonrpc_session_get_backlog(s->js)) {
530 if (ovsdb_jsonrpc_monitor_needs_flush(s)) {
531 poll_immediate_wake();
533 jsonrpc_session_recv_wait(s->js);
539 ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *remote)
541 struct ovsdb_jsonrpc_session *s;
543 LIST_FOR_EACH (s, node, &remote->sessions) {
544 ovsdb_jsonrpc_session_wait(s);
549 ovsdb_jsonrpc_session_get_memory_usage(const struct ovsdb_jsonrpc_session *s,
552 simap_increase(usage, "triggers", hmap_count(&s->triggers));
553 simap_increase(usage, "backlog", jsonrpc_session_get_backlog(s->js));
557 ovsdb_jsonrpc_session_get_memory_usage_all(
558 const struct ovsdb_jsonrpc_remote *remote,
561 struct ovsdb_jsonrpc_session *s;
563 LIST_FOR_EACH (s, node, &remote->sessions) {
564 ovsdb_jsonrpc_session_get_memory_usage(s, usage);
569 ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *remote)
571 struct ovsdb_jsonrpc_session *s, *next;
573 LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
574 ovsdb_jsonrpc_session_close(s);
578 /* Forces all of the JSON-RPC sessions managed by 'remote' to disconnect and
581 ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *remote)
583 struct ovsdb_jsonrpc_session *s, *next;
585 LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
586 jsonrpc_session_force_reconnect(s->js);
587 if (!jsonrpc_session_is_alive(s->js)) {
588 ovsdb_jsonrpc_session_close(s);
593 /* Sets the options for all of the JSON-RPC sessions managed by 'remote' to
596 * (The dscp value can't be changed directly; the caller must instead close and
597 * re-open the session.) */
599 ovsdb_jsonrpc_session_set_all_options(
600 struct ovsdb_jsonrpc_remote *remote,
601 const struct ovsdb_jsonrpc_options *options)
603 struct ovsdb_jsonrpc_session *s;
605 LIST_FOR_EACH (s, node, &remote->sessions) {
606 ovsdb_jsonrpc_session_set_options(s, options);
610 /* Sets the 'status' of for the 'remote' with an outgoing connection. */
612 ovsdb_jsonrpc_active_session_get_status(
613 const struct ovsdb_jsonrpc_remote *remote,
614 struct ovsdb_jsonrpc_remote_status *status)
616 const struct ovs_list *sessions = &remote->sessions;
617 const struct ovsdb_jsonrpc_session *s;
619 if (ovs_list_is_empty(sessions)) {
623 ovs_assert(ovs_list_is_singleton(sessions));
624 s = CONTAINER_OF(ovs_list_front(sessions), struct ovsdb_jsonrpc_session, node);
625 ovsdb_jsonrpc_session_get_status(s, status);
626 status->n_connections = 1;
632 ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_session *session,
633 struct ovsdb_jsonrpc_remote_status *status)
635 const struct ovsdb_jsonrpc_session *s = session;
636 const struct jsonrpc_session *js;
637 struct ovsdb_lock_waiter *waiter;
638 struct reconnect_stats rstats;
639 struct ds locks_held, locks_waiting, locks_lost;
643 status->is_connected = jsonrpc_session_is_connected(js);
644 status->last_error = jsonrpc_session_get_status(js);
646 jsonrpc_session_get_reconnect_stats(js, &rstats);
647 status->state = rstats.state;
648 status->sec_since_connect = rstats.msec_since_connect == UINT_MAX
649 ? UINT_MAX : rstats.msec_since_connect / 1000;
650 status->sec_since_disconnect = rstats.msec_since_disconnect == UINT_MAX
651 ? UINT_MAX : rstats.msec_since_disconnect / 1000;
653 ds_init(&locks_held);
654 ds_init(&locks_waiting);
655 ds_init(&locks_lost);
656 HMAP_FOR_EACH (waiter, session_node, &s->up.waiters) {
659 string = (ovsdb_lock_waiter_is_owner(waiter) ? &locks_held
660 : waiter->mode == OVSDB_LOCK_WAIT ? &locks_waiting
662 if (string->length) {
663 ds_put_char(string, ' ');
665 ds_put_cstr(string, waiter->lock_name);
667 status->locks_held = ds_steal_cstr(&locks_held);
668 status->locks_waiting = ds_steal_cstr(&locks_waiting);
669 status->locks_lost = ds_steal_cstr(&locks_lost);
672 /* Examines 'request' to determine the database to which it relates, and then
673 * searches 's' to find that database:
675 * - If successful, returns the database and sets '*replyp' to NULL.
677 * - If no such database exists, returns NULL and sets '*replyp' to an
678 * appropriate JSON-RPC error reply, owned by the caller. */
679 static struct ovsdb *
680 ovsdb_jsonrpc_lookup_db(const struct ovsdb_jsonrpc_session *s,
681 const struct jsonrpc_msg *request,
682 struct jsonrpc_msg **replyp)
684 struct json_array *params;
685 struct ovsdb_error *error;
689 params = json_array(request->params);
690 if (!params->n || params->elems[0]->type != JSON_STRING) {
691 error = ovsdb_syntax_error(
692 request->params, NULL,
693 "%s request params must begin with <db-name>", request->method);
697 db_name = params->elems[0]->u.string;
698 db = shash_find_data(&s->up.server->dbs, db_name);
700 error = ovsdb_syntax_error(
701 request->params, "unknown database",
702 "%s request specifies unknown database %s",
703 request->method, db_name);
711 *replyp = jsonrpc_create_error(ovsdb_error_to_json(error), request->id);
712 ovsdb_error_destroy(error);
716 static struct ovsdb_error *
717 ovsdb_jsonrpc_session_parse_lock_name(const struct jsonrpc_msg *request,
718 const char **lock_namep)
720 const struct json_array *params;
722 params = json_array(request->params);
723 if (params->n != 1 || params->elems[0]->type != JSON_STRING ||
724 !ovsdb_parser_is_id(json_string(params->elems[0]))) {
726 return ovsdb_syntax_error(request->params, NULL,
727 "%s request params must be <id>",
731 *lock_namep = json_string(params->elems[0]);
736 ovsdb_jsonrpc_session_notify(struct ovsdb_session *session,
737 const char *lock_name,
740 struct ovsdb_jsonrpc_session *s;
743 s = CONTAINER_OF(session, struct ovsdb_jsonrpc_session, up);
744 params = json_array_create_1(json_string_create(lock_name));
745 ovsdb_jsonrpc_session_send(s, jsonrpc_create_notify(method, params));
748 static struct jsonrpc_msg *
749 ovsdb_jsonrpc_session_lock(struct ovsdb_jsonrpc_session *s,
750 struct jsonrpc_msg *request,
751 enum ovsdb_lock_mode mode)
753 struct ovsdb_lock_waiter *waiter;
754 struct jsonrpc_msg *reply;
755 struct ovsdb_error *error;
756 struct ovsdb_session *victim;
757 const char *lock_name;
760 error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name);
765 /* Report error if this session has issued a "lock" or "steal" without a
766 * matching "unlock" for this lock. */
767 waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name);
769 error = ovsdb_syntax_error(
770 request->params, NULL,
771 "must issue \"unlock\" before new \"%s\"", request->method);
775 /* Get the lock, add us as a waiter. */
776 waiter = ovsdb_server_lock(&s->remote->server->up, &s->up, lock_name, mode,
779 ovsdb_jsonrpc_session_notify(victim, lock_name, "stolen");
782 result = json_object_create();
783 json_object_put(result, "locked",
784 json_boolean_create(ovsdb_lock_waiter_is_owner(waiter)));
786 return jsonrpc_create_reply(result, request->id);
789 reply = jsonrpc_create_error(ovsdb_error_to_json(error), request->id);
790 ovsdb_error_destroy(error);
795 ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *s)
797 struct ovsdb_lock_waiter *waiter, *next;
799 HMAP_FOR_EACH_SAFE (waiter, next, session_node, &s->up.waiters) {
800 ovsdb_jsonrpc_session_unlock__(waiter);
805 ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *waiter)
807 struct ovsdb_lock *lock = waiter->lock;
810 struct ovsdb_session *new_owner = ovsdb_lock_waiter_remove(waiter);
812 ovsdb_jsonrpc_session_notify(new_owner, lock->name, "locked");
814 /* ovsdb_server_lock() might have freed 'lock'. */
818 ovsdb_lock_waiter_destroy(waiter);
821 static struct jsonrpc_msg *
822 ovsdb_jsonrpc_session_unlock(struct ovsdb_jsonrpc_session *s,
823 struct jsonrpc_msg *request)
825 struct ovsdb_lock_waiter *waiter;
826 struct jsonrpc_msg *reply;
827 struct ovsdb_error *error;
828 const char *lock_name;
830 error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name);
835 /* Report error if this session has not issued a "lock" or "steal" for this
837 waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name);
839 error = ovsdb_syntax_error(
840 request->params, NULL, "\"unlock\" without \"lock\" or \"steal\"");
844 ovsdb_jsonrpc_session_unlock__(waiter);
846 return jsonrpc_create_reply(json_object_create(), request->id);
849 reply = jsonrpc_create_error(ovsdb_error_to_json(error), request->id);
850 ovsdb_error_destroy(error);
854 static struct jsonrpc_msg *
855 execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
856 struct jsonrpc_msg *request)
858 ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params);
860 request->params = NULL;
861 jsonrpc_msg_destroy(request);
866 ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s,
867 struct jsonrpc_msg *request)
869 struct jsonrpc_msg *reply;
871 if (!strcmp(request->method, "transact")) {
872 struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
874 reply = execute_transaction(s, db, request);
876 } else if (!strcmp(request->method, "monitor") ||
877 (monitor_cond_enable__ && !strcmp(request->method,
879 struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
881 int l = strlen(request->method) - strlen("monitor");
882 enum ovsdb_monitor_version version = l ? OVSDB_MONITOR_V2
884 reply = ovsdb_jsonrpc_monitor_create(s, db, request->params,
885 version, request->id);
887 } else if (!strcmp(request->method, "monitor_cond_change")) {
888 reply = ovsdb_jsonrpc_monitor_cond_change(s, request->params,
890 } else if (!strcmp(request->method, "monitor_cancel")) {
891 reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params),
893 } else if (!strcmp(request->method, "get_schema")) {
894 struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
896 reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema),
899 } else if (!strcmp(request->method, "list_dbs")) {
900 size_t n_dbs = shash_count(&s->up.server->dbs);
901 struct shash_node *node;
905 dbs = xmalloc(n_dbs * sizeof *dbs);
907 SHASH_FOR_EACH (node, &s->up.server->dbs) {
908 dbs[i++] = json_string_create(node->name);
910 reply = jsonrpc_create_reply(json_array_create(dbs, n_dbs),
912 } else if (!strcmp(request->method, "lock")) {
913 reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_WAIT);
914 } else if (!strcmp(request->method, "steal")) {
915 reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_STEAL);
916 } else if (!strcmp(request->method, "unlock")) {
917 reply = ovsdb_jsonrpc_session_unlock(s, request);
918 } else if (!strcmp(request->method, "echo")) {
919 reply = jsonrpc_create_reply(json_clone(request->params), request->id);
921 reply = jsonrpc_create_error(json_string_create("unknown method"),
926 jsonrpc_msg_destroy(request);
927 ovsdb_jsonrpc_session_send(s, reply);
932 execute_cancel(struct ovsdb_jsonrpc_session *s, struct jsonrpc_msg *request)
934 if (json_array(request->params)->n == 1) {
935 struct ovsdb_jsonrpc_trigger *t;
938 id = request->params->u.array.elems[0];
939 t = ovsdb_jsonrpc_trigger_find(s, id, json_hash(id, 0));
941 ovsdb_jsonrpc_trigger_complete(t);
947 ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *s,
948 struct jsonrpc_msg *request)
950 if (!strcmp(request->method, "cancel")) {
951 execute_cancel(s, request);
953 jsonrpc_msg_destroy(request);
957 ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *s,
958 struct jsonrpc_msg *msg)
960 ovsdb_jsonrpc_monitor_flush_all(s);
961 jsonrpc_session_send(s->js, msg);
964 /* JSON-RPC database server triggers.
966 * (Every transaction is treated as a trigger even if it doesn't actually have
967 * any "wait" operations.) */
969 struct ovsdb_jsonrpc_trigger {
970 struct ovsdb_trigger trigger;
971 struct hmap_node hmap_node; /* In session's "triggers" hmap. */
976 ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
977 struct json *id, struct json *params)
979 struct ovsdb_jsonrpc_trigger *t;
982 /* Check for duplicate ID. */
983 hash = json_hash(id, 0);
984 t = ovsdb_jsonrpc_trigger_find(s, id, hash);
986 struct jsonrpc_msg *msg;
988 msg = jsonrpc_create_error(json_string_create("duplicate request ID"),
990 ovsdb_jsonrpc_session_send(s, msg);
992 json_destroy(params);
996 /* Insert into trigger table. */
997 t = xmalloc(sizeof *t);
998 ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec());
1000 hmap_insert(&s->triggers, &t->hmap_node, hash);
1002 /* Complete early if possible. */
1003 if (ovsdb_trigger_is_complete(&t->trigger)) {
1004 ovsdb_jsonrpc_trigger_complete(t);
1008 static struct ovsdb_jsonrpc_trigger *
1009 ovsdb_jsonrpc_trigger_find(struct ovsdb_jsonrpc_session *s,
1010 const struct json *id, size_t hash)
1012 struct ovsdb_jsonrpc_trigger *t;
1014 HMAP_FOR_EACH_WITH_HASH (t, hmap_node, hash, &s->triggers) {
1015 if (json_equal(t->id, id)) {
1024 ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t)
1026 struct ovsdb_jsonrpc_session *s;
1028 s = CONTAINER_OF(t->trigger.session, struct ovsdb_jsonrpc_session, up);
1030 if (jsonrpc_session_is_connected(s->js)) {
1031 struct jsonrpc_msg *reply;
1032 struct json *result;
1034 result = ovsdb_trigger_steal_result(&t->trigger);
1036 reply = jsonrpc_create_reply(result, t->id);
1038 reply = jsonrpc_create_error(json_string_create("canceled"),
1041 ovsdb_jsonrpc_session_send(s, reply);
1044 json_destroy(t->id);
1045 ovsdb_trigger_destroy(&t->trigger);
1046 hmap_remove(&s->triggers, &t->hmap_node);
1051 ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *s)
1053 struct ovsdb_jsonrpc_trigger *t, *next;
1054 HMAP_FOR_EACH_SAFE (t, next, hmap_node, &s->triggers) {
1055 ovsdb_jsonrpc_trigger_complete(t);
1060 ovsdb_jsonrpc_trigger_complete_done(struct ovsdb_jsonrpc_session *s)
1062 while (!ovs_list_is_empty(&s->up.completions)) {
1063 struct ovsdb_jsonrpc_trigger *t
1064 = CONTAINER_OF(s->up.completions.next,
1065 struct ovsdb_jsonrpc_trigger, trigger.node);
1066 ovsdb_jsonrpc_trigger_complete(t);
1070 /* Jsonrpc front end monitor. */
1071 struct ovsdb_jsonrpc_monitor {
1072 struct ovsdb_jsonrpc_session *session;
1074 struct hmap_node node; /* In ovsdb_jsonrpc_session's "monitors". */
1075 struct json *monitor_id;
1076 struct ovsdb_monitor *dbmon;
1077 uint64_t unflushed; /* The first transaction that has not been
1078 flushed to the jsonrpc remote client. */
1079 enum ovsdb_monitor_version version;
1080 struct ovsdb_monitor_session_condition *condition;/* Session's condition */
1083 static struct ovsdb_jsonrpc_monitor *
1084 ovsdb_jsonrpc_monitor_find(struct ovsdb_jsonrpc_session *s,
1085 const struct json *monitor_id)
1087 struct ovsdb_jsonrpc_monitor *m;
1089 HMAP_FOR_EACH_WITH_HASH (m, node, json_hash(monitor_id, 0), &s->monitors) {
1090 if (json_equal(m->monitor_id, monitor_id)) {
1099 parse_bool(struct ovsdb_parser *parser, const char *name, bool default_value)
1101 const struct json *json;
1103 json = ovsdb_parser_member(parser, name, OP_BOOLEAN | OP_OPTIONAL);
1104 return json ? json_boolean(json) : default_value;
1107 static struct ovsdb_error * OVS_WARN_UNUSED_RESULT
1108 ovsdb_jsonrpc_parse_monitor_request(
1109 struct ovsdb_monitor *dbmon,
1110 const struct ovsdb_table *table,
1111 struct ovsdb_monitor_session_condition *cond,
1112 const struct json *monitor_request)
1114 const struct ovsdb_table_schema *ts = table->schema;
1115 enum ovsdb_monitor_selection select;
1116 const struct json *columns, *select_json, *where = NULL;
1117 struct ovsdb_parser parser;
1118 struct ovsdb_error *error;
1120 ovsdb_parser_init(&parser, monitor_request, "table %s", ts->name);
1122 where = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL);
1124 columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL);
1126 select_json = ovsdb_parser_member(&parser, "select",
1127 OP_OBJECT | OP_OPTIONAL);
1129 error = ovsdb_parser_finish(&parser);
1136 ovsdb_parser_init(&parser, select_json, "table %s select", ts->name);
1137 if (parse_bool(&parser, "initial", true)) {
1138 select |= OJMS_INITIAL;
1140 if (parse_bool(&parser, "insert", true)) {
1141 select |= OJMS_INSERT;
1143 if (parse_bool(&parser, "delete", true)) {
1144 select |= OJMS_DELETE;
1146 if (parse_bool(&parser, "modify", true)) {
1147 select |= OJMS_MODIFY;
1149 error = ovsdb_parser_finish(&parser);
1154 select = OJMS_INITIAL | OJMS_INSERT | OJMS_DELETE | OJMS_MODIFY;
1157 ovsdb_monitor_table_add_select(dbmon, table, select);
1161 if (columns->type != JSON_ARRAY) {
1162 return ovsdb_syntax_error(columns, NULL,
1163 "array of column names expected");
1166 for (i = 0; i < columns->u.array.n; i++) {
1167 const struct ovsdb_column *column;
1170 if (columns->u.array.elems[i]->type != JSON_STRING) {
1171 return ovsdb_syntax_error(columns, NULL,
1172 "array of column names expected");
1175 s = columns->u.array.elems[i]->u.string;
1176 column = shash_find_data(&table->schema->columns, s);
1178 return ovsdb_syntax_error(columns, NULL, "%s is not a valid "
1181 if (ovsdb_monitor_add_column(dbmon, table, column,
1183 return ovsdb_syntax_error(columns, NULL, "column %s "
1184 "mentioned more than once",
1189 struct shash_node *node;
1191 SHASH_FOR_EACH (node, &ts->columns) {
1192 const struct ovsdb_column *column = node->data;
1193 if (column->index != OVSDB_COL_UUID) {
1194 if (ovsdb_monitor_add_column(dbmon, table, column,
1196 return ovsdb_syntax_error(columns, NULL, "column %s "
1197 "mentioned more than once",
1204 error = ovsdb_monitor_table_condition_create(cond, table, where);
1213 static struct jsonrpc_msg *
1214 ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
1215 struct json *params,
1216 enum ovsdb_monitor_version version,
1217 const struct json *request_id)
1219 struct ovsdb_jsonrpc_monitor *m = NULL;
1220 struct ovsdb_monitor *dbmon = NULL;
1221 struct json *monitor_id, *monitor_requests;
1222 struct ovsdb_error *error = NULL;
1223 struct shash_node *node;
1226 if (json_array(params)->n != 3) {
1227 error = ovsdb_syntax_error(params, NULL, "invalid parameters");
1230 monitor_id = params->u.array.elems[1];
1231 monitor_requests = params->u.array.elems[2];
1232 if (monitor_requests->type != JSON_OBJECT) {
1233 error = ovsdb_syntax_error(monitor_requests, NULL,
1234 "monitor-requests must be object");
1238 if (ovsdb_jsonrpc_monitor_find(s, monitor_id)) {
1239 error = ovsdb_syntax_error(monitor_id, NULL, "duplicate monitor ID");
1243 m = xzalloc(sizeof *m);
1246 m->dbmon = ovsdb_monitor_create(db, m);
1247 if (version == OVSDB_MONITOR_V2) {
1248 m->condition = ovsdb_monitor_session_condition_create();
1251 m->version = version;
1252 hmap_insert(&s->monitors, &m->node, json_hash(monitor_id, 0));
1253 m->monitor_id = json_clone(monitor_id);
1255 SHASH_FOR_EACH (node, json_object(monitor_requests)) {
1256 const struct ovsdb_table *table;
1257 const struct json *mr_value;
1260 table = ovsdb_get_table(m->db, node->name);
1262 error = ovsdb_syntax_error(NULL, NULL,
1263 "no table named %s", node->name);
1267 ovsdb_monitor_add_table(m->dbmon, table);
1269 /* Parse columns. */
1270 mr_value = node->data;
1271 if (mr_value->type == JSON_ARRAY) {
1272 const struct json_array *array = &mr_value->u.array;
1274 for (i = 0; i < array->n; i++) {
1275 error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon,
1284 error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon,
1294 dbmon = ovsdb_monitor_add(m->dbmon);
1295 if (dbmon != m->dbmon) {
1296 /* Found an exisiting dbmon, reuse the current one. */
1297 ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed);
1298 ovsdb_monitor_add_jsonrpc_monitor(dbmon, m);
1302 /* Only now we can bind session's condition to ovsdb_monitor */
1304 ovsdb_monitor_condition_bind(m->dbmon, m->condition);
1307 ovsdb_monitor_get_initial(m->dbmon);
1308 json = ovsdb_jsonrpc_monitor_compose_update(m, true);
1309 json = json ? json : json_object_create();
1310 return jsonrpc_create_reply(json, request_id);
1314 ovsdb_jsonrpc_monitor_destroy(m);
1317 json = ovsdb_error_to_json(error);
1318 ovsdb_error_destroy(error);
1319 return jsonrpc_create_error(json, request_id);
1322 static struct ovsdb_error *
1323 ovsdb_jsonrpc_parse_monitor_cond_change_request(
1324 struct ovsdb_jsonrpc_monitor *m,
1325 const struct ovsdb_table *table,
1326 const struct json *cond_change_req)
1328 const struct ovsdb_table_schema *ts = table->schema;
1329 const struct json *condition, *columns;
1330 struct ovsdb_parser parser;
1331 struct ovsdb_error *error;
1333 ovsdb_parser_init(&parser, cond_change_req, "table %s", ts->name);
1334 columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL);
1335 condition = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL);
1337 error = ovsdb_parser_finish(&parser);
1343 error = ovsdb_syntax_error(cond_change_req, NULL, "changing columns "
1347 error = ovsdb_monitor_table_condition_update(m->dbmon, m->condition, table,
1353 static struct jsonrpc_msg *
1354 ovsdb_jsonrpc_monitor_cond_change(struct ovsdb_jsonrpc_session *s,
1355 struct json *params,
1356 const struct json *request_id)
1358 struct ovsdb_error *error;
1359 struct ovsdb_jsonrpc_monitor *m;
1360 struct json *monitor_cond_change_reqs;
1361 struct shash_node *node;
1364 if (json_array(params)->n != 3) {
1365 error = ovsdb_syntax_error(params, NULL, "invalid parameters");
1369 m = ovsdb_jsonrpc_monitor_find(s, params->u.array.elems[0]);
1371 error = ovsdb_syntax_error(request_id, NULL,
1372 "unknown monitor session");
1376 monitor_cond_change_reqs = params->u.array.elems[2];
1377 if (monitor_cond_change_reqs->type != JSON_OBJECT) {
1379 ovsdb_syntax_error(NULL, NULL,
1380 "monitor-cond-change-requests must be object");
1384 SHASH_FOR_EACH (node, json_object(monitor_cond_change_reqs)) {
1385 const struct ovsdb_table *table;
1386 const struct json *mr_value;
1389 table = ovsdb_get_table(m->db, node->name);
1391 error = ovsdb_syntax_error(NULL, NULL,
1392 "no table named %s", node->name);
1395 if (!ovsdb_monitor_table_exists(m->dbmon, table)) {
1396 error = ovsdb_syntax_error(NULL, NULL,
1397 "no table named %s in monitor session",
1402 mr_value = node->data;
1403 if (mr_value->type == JSON_ARRAY) {
1404 const struct json_array *array = &mr_value->u.array;
1406 for (i = 0; i < array->n; i++) {
1407 error = ovsdb_jsonrpc_parse_monitor_cond_change_request(
1408 m, table, array->elems[i]);
1414 error = ovsdb_syntax_error(
1416 "table %s no monitor-cond-change JSON array",
1422 /* Change monitor id */
1423 hmap_remove(&s->monitors, &m->node);
1424 json_destroy(m->monitor_id);
1425 m->monitor_id = json_clone(params->u.array.elems[1]);
1426 hmap_insert(&s->monitors, &m->node, json_hash(m->monitor_id, 0));
1428 /* Send the new update, if any, represents the difference from the old
1429 * condition and the new one. */
1430 struct json *update_json;
1432 update_json = ovsdb_monitor_get_update(m->dbmon, false, true,
1433 &m->unflushed, m->condition, m->version);
1435 struct jsonrpc_msg *msg;
1436 struct json *params;
1438 params = json_array_create_2(json_clone(m->monitor_id), update_json);
1439 msg = ovsdb_jsonrpc_create_notify(m, params);
1440 jsonrpc_session_send(s->js, msg);
1443 return jsonrpc_create_reply(json_object_create(), request_id);
1447 json = ovsdb_error_to_json(error);
1448 ovsdb_error_destroy(error);
1449 return jsonrpc_create_error(json, request_id);
1452 static struct jsonrpc_msg *
1453 ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s,
1454 struct json_array *params,
1455 const struct json *request_id)
1457 if (params->n != 1) {
1458 return jsonrpc_create_error(json_string_create("invalid parameters"),
1461 struct ovsdb_jsonrpc_monitor *m;
1463 m = ovsdb_jsonrpc_monitor_find(s, params->elems[0]);
1465 return jsonrpc_create_error(json_string_create("unknown monitor"),
1468 ovsdb_jsonrpc_monitor_destroy(m);
1469 return jsonrpc_create_reply(json_object_create(), request_id);
1475 ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *s)
1477 struct ovsdb_jsonrpc_monitor *m, *next;
1479 HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) {
1480 ovsdb_jsonrpc_monitor_destroy(m);
1484 static struct json *
1485 ovsdb_jsonrpc_monitor_compose_update(struct ovsdb_jsonrpc_monitor *m,
1489 if (!ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
1493 return ovsdb_monitor_get_update(m->dbmon, initial, false,
1494 &m->unflushed, m->condition, m->version);
1498 ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *s)
1500 struct ovsdb_jsonrpc_monitor *m;
1502 HMAP_FOR_EACH (m, node, &s->monitors) {
1503 if (ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
1512 ovsdb_jsonrpc_monitor_destroy(struct ovsdb_jsonrpc_monitor *m)
1514 json_destroy(m->monitor_id);
1515 hmap_remove(&m->session->monitors, &m->node);
1516 ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed);
1517 ovsdb_monitor_session_condition_destroy(m->condition);
1521 static struct jsonrpc_msg *
1522 ovsdb_jsonrpc_create_notify(const struct ovsdb_jsonrpc_monitor *m,
1523 struct json *params)
1527 switch(m->version) {
1528 case OVSDB_MONITOR_V1:
1531 case OVSDB_MONITOR_V2:
1534 case OVSDB_MONITOR_VERSION_MAX:
1539 return jsonrpc_create_notify(method, params);
1543 ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s)
1545 struct ovsdb_jsonrpc_monitor *m;
1547 HMAP_FOR_EACH (m, node, &s->monitors) {
1550 json = ovsdb_jsonrpc_monitor_compose_update(m, false);
1552 struct jsonrpc_msg *msg;
1553 struct json *params;
1555 params = json_array_create_2(json_clone(m->monitor_id), json);
1556 msg = ovsdb_jsonrpc_create_notify(m, params);
1557 jsonrpc_session_send(s->js, msg);
1563 ovsdb_jsonrpc_disable_monitor_cond(void)
1565 /* Once disabled, it is not possible to re-enable it. */
1566 monitor_cond_enable__ = false;