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c2e3cbaf | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. |
f85f8ebb BP |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
14 | */ | |
15 | ||
16 | #include <config.h> | |
17 | ||
18 | #include "jsonrpc-server.h" | |
19 | ||
20 | #include <errno.h> | |
21 | ||
17d18afb | 22 | #include "bitmap.h" |
b93d3b6c | 23 | #include "column.h" |
3e8a2ad1 | 24 | #include "openvswitch/dynamic-string.h" |
52553aea | 25 | #include "monitor.h" |
ee89ea7b | 26 | #include "openvswitch/json.h" |
f85f8ebb | 27 | #include "jsonrpc.h" |
a8425c53 BP |
28 | #include "ovsdb-error.h" |
29 | #include "ovsdb-parser.h" | |
f85f8ebb | 30 | #include "ovsdb.h" |
71cdf7cd | 31 | #include "condition.h" |
fd016ae3 | 32 | #include "openvswitch/poll-loop.h" |
6c2882f9 | 33 | #include "reconnect.h" |
a8425c53 | 34 | #include "row.h" |
e317253b | 35 | #include "server.h" |
0d085684 | 36 | #include "simap.h" |
f85f8ebb | 37 | #include "stream.h" |
a8425c53 | 38 | #include "table.h" |
f85f8ebb | 39 | #include "timeval.h" |
a8425c53 | 40 | #include "transaction.h" |
f85f8ebb | 41 | #include "trigger.h" |
ee89ea7b | 42 | #include "util.h" |
e6211adc | 43 | #include "openvswitch/vlog.h" |
f85f8ebb | 44 | |
d98e6007 | 45 | VLOG_DEFINE_THIS_MODULE(ovsdb_jsonrpc_server); |
5136ce49 | 46 | |
0b1fae1b | 47 | struct ovsdb_jsonrpc_remote; |
b93d3b6c | 48 | struct ovsdb_jsonrpc_session; |
f85f8ebb | 49 | |
c383f3bf LS |
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; | |
e47cb14c | 53 | |
0b1fae1b | 54 | /* Message rate-limiting. */ |
d3d8f1f7 | 55 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
0b1fae1b | 56 | |
a8425c53 | 57 | /* Sessions. */ |
0b1fae1b | 58 | static struct ovsdb_jsonrpc_session *ovsdb_jsonrpc_session_create( |
e51879e9 | 59 | struct ovsdb_jsonrpc_remote *, struct jsonrpc_session *, bool); |
0b1fae1b BP |
60 | static void ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *); |
61 | static void ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *); | |
0d085684 BP |
62 | static void ovsdb_jsonrpc_session_get_memory_usage_all( |
63 | const struct ovsdb_jsonrpc_remote *, struct simap *usage); | |
0b1fae1b | 64 | static void ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *); |
31d0b6c9 | 65 | static void ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *); |
94db5407 BP |
66 | static void ovsdb_jsonrpc_session_set_all_options( |
67 | struct ovsdb_jsonrpc_remote *, const struct ovsdb_jsonrpc_options *); | |
600766e8 | 68 | static bool ovsdb_jsonrpc_active_session_get_status( |
0b3e7a8b | 69 | const struct ovsdb_jsonrpc_remote *, |
87fcbc60 | 70 | struct ovsdb_jsonrpc_remote_status *); |
600766e8 AZ |
71 | static void ovsdb_jsonrpc_session_get_status( |
72 | const struct ovsdb_jsonrpc_session *, | |
73 | struct ovsdb_jsonrpc_remote_status *); | |
da897f41 BP |
74 | static void ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *); |
75 | static void ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *); | |
48f6e410 BP |
76 | static void ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *, |
77 | struct jsonrpc_msg *); | |
b93d3b6c | 78 | |
a8425c53 | 79 | /* Triggers. */ |
b93d3b6c | 80 | static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *, |
b4e8d170 | 81 | struct ovsdb *, |
b93d3b6c BP |
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 *); | |
a8425c53 BP |
89 | |
90 | /* Monitors. */ | |
508624b6 BP |
91 | static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_create( |
92 | struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params, | |
92f8d65b | 93 | enum ovsdb_monitor_version, const struct json *request_id); |
845a1187 LS |
94 | static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cond_change( |
95 | struct ovsdb_jsonrpc_session *s, | |
96 | struct json *params, | |
97 | const struct json *request_id); | |
a8425c53 BP |
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 *); | |
48f6e410 BP |
103 | static void ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *); |
104 | static bool ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *); | |
f1de87bb | 105 | static struct json *ovsdb_jsonrpc_monitor_compose_update( |
59c35e11 | 106 | struct ovsdb_jsonrpc_monitor *monitor, bool initial); |
845a1187 LS |
107 | static struct jsonrpc_msg * ovsdb_jsonrpc_create_notify( |
108 | const struct ovsdb_jsonrpc_monitor *m, | |
109 | struct json *params); | |
61b63013 | 110 | |
b93d3b6c BP |
111 | \f |
112 | /* JSON-RPC database server. */ | |
f85f8ebb BP |
113 | |
114 | struct ovsdb_jsonrpc_server { | |
e317253b | 115 | struct ovsdb_server up; |
acdd0764 | 116 | unsigned int n_sessions; |
e51879e9 AZ |
117 | bool read_only; /* This server is does not accept any |
118 | transactions that can modify the database. */ | |
0b1fae1b BP |
119 | struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */ |
120 | }; | |
f85f8ebb | 121 | |
0b1fae1b BP |
122 | /* A configured remote. This is either a passive stream listener plus a list |
123 | * of the currently connected sessions, or a list of exactly one active | |
124 | * session. */ | |
125 | struct ovsdb_jsonrpc_remote { | |
126 | struct ovsdb_jsonrpc_server *server; | |
127 | struct pstream *listener; /* Listener, if passive. */ | |
ca6ba700 | 128 | struct ovs_list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */ |
e879d33e | 129 | uint8_t dscp; |
9c1a1182 | 130 | bool read_only; |
d6db7b3c | 131 | char *role; |
f85f8ebb BP |
132 | }; |
133 | ||
94db5407 | 134 | static struct ovsdb_jsonrpc_remote *ovsdb_jsonrpc_server_add_remote( |
f125905c MM |
135 | struct ovsdb_jsonrpc_server *, const char *name, |
136 | const struct ovsdb_jsonrpc_options *options | |
137 | ); | |
0b1fae1b BP |
138 | static void ovsdb_jsonrpc_server_del_remote(struct shash_node *); |
139 | ||
b4e8d170 BP |
140 | /* Creates and returns a new server to provide JSON-RPC access to an OVSDB. |
141 | * | |
142 | * The caller must call ovsdb_jsonrpc_server_add_db() for each database to | |
143 | * which 'server' should provide access. */ | |
b93d3b6c | 144 | struct ovsdb_jsonrpc_server * |
e51879e9 | 145 | ovsdb_jsonrpc_server_create(bool read_only) |
f85f8ebb | 146 | { |
b93d3b6c | 147 | struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server); |
b4e8d170 | 148 | ovsdb_server_init(&server->up); |
0b1fae1b | 149 | shash_init(&server->remotes); |
e51879e9 | 150 | server->read_only = read_only; |
b93d3b6c BP |
151 | return server; |
152 | } | |
f85f8ebb | 153 | |
b4e8d170 BP |
154 | /* Adds 'db' to the set of databases served out by 'svr'. Returns true if |
155 | * successful, false if 'db''s name is the same as some database already in | |
156 | * 'server'. */ | |
157 | bool | |
158 | ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *svr, struct ovsdb *db) | |
159 | { | |
0a3b723b BP |
160 | /* The OVSDB protocol doesn't have a way to notify a client that a |
161 | * database has been added. If some client tried to use the database | |
162 | * that we're adding and failed, then forcing it to reconnect seems like | |
163 | * a reasonable way to make it try again. | |
164 | * | |
165 | * If this is too big of a hammer in practice, we could be more selective, | |
166 | * e.g. disconnect only connections that actually tried to use a database | |
167 | * with 'db''s name. */ | |
e51879e9 | 168 | ovsdb_jsonrpc_server_reconnect(svr, svr->read_only); |
0a3b723b | 169 | |
b4e8d170 BP |
170 | return ovsdb_server_add_db(&svr->up, db); |
171 | } | |
172 | ||
0a3b723b BP |
173 | /* Removes 'db' from the set of databases served out by 'svr'. Returns |
174 | * true if successful, false if there is no database associated with 'db'. */ | |
175 | bool | |
176 | ovsdb_jsonrpc_server_remove_db(struct ovsdb_jsonrpc_server *svr, | |
177 | struct ovsdb *db) | |
178 | { | |
179 | /* There might be pointers to 'db' from 'svr', such as monitors or | |
180 | * outstanding transactions. Disconnect all JSON-RPC connections to avoid | |
181 | * accesses to freed memory. | |
182 | * | |
183 | * If this is too big of a hammer in practice, we could be more selective, | |
184 | * e.g. disconnect only connections that actually reference 'db'. */ | |
e51879e9 | 185 | ovsdb_jsonrpc_server_reconnect(svr, svr->read_only); |
0a3b723b BP |
186 | |
187 | return ovsdb_server_remove_db(&svr->up, db); | |
188 | } | |
189 | ||
23935e8b BP |
190 | void |
191 | ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr) | |
192 | { | |
193 | struct shash_node *node, *next; | |
194 | ||
195 | SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) { | |
196 | ovsdb_jsonrpc_server_del_remote(node); | |
197 | } | |
198 | shash_destroy(&svr->remotes); | |
e317253b | 199 | ovsdb_server_destroy(&svr->up); |
23935e8b BP |
200 | free(svr); |
201 | } | |
202 | ||
94db5407 | 203 | struct ovsdb_jsonrpc_options * |
f1936eb6 | 204 | ovsdb_jsonrpc_default_options(const char *target) |
94db5407 BP |
205 | { |
206 | struct ovsdb_jsonrpc_options *options = xzalloc(sizeof *options); | |
94db5407 | 207 | options->max_backoff = RECONNECT_DEFAULT_MAX_BACKOFF; |
f1936eb6 EJ |
208 | options->probe_interval = (stream_or_pstream_needs_probes(target) |
209 | ? RECONNECT_DEFAULT_PROBE_INTERVAL | |
210 | : 0); | |
94db5407 BP |
211 | return options; |
212 | } | |
213 | ||
214 | /* Sets 'svr''s current set of remotes to the names in 'new_remotes', with | |
215 | * options in the struct ovsdb_jsonrpc_options supplied as the data values. | |
0b1fae1b BP |
216 | * |
217 | * A remote is an active or passive stream connection method, e.g. "pssl:" or | |
218 | * "tcp:1.2.3.4". */ | |
6dea5eaf | 219 | void |
0b1fae1b BP |
220 | ovsdb_jsonrpc_server_set_remotes(struct ovsdb_jsonrpc_server *svr, |
221 | const struct shash *new_remotes) | |
b93d3b6c | 222 | { |
0b1fae1b BP |
223 | struct shash_node *node, *next; |
224 | ||
225 | SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) { | |
c2e3cbaf BP |
226 | struct ovsdb_jsonrpc_remote *remote = node->data; |
227 | struct ovsdb_jsonrpc_options *options | |
228 | = shash_find_data(new_remotes, node->name); | |
229 | ||
230 | if (!options) { | |
f97ffebf | 231 | VLOG_INFO("%s: remote deconfigured", node->name); |
0b1fae1b | 232 | ovsdb_jsonrpc_server_del_remote(node); |
c2e3cbaf BP |
233 | } else if (options->dscp != remote->dscp) { |
234 | ovsdb_jsonrpc_server_del_remote(node); | |
235 | } | |
0b1fae1b BP |
236 | } |
237 | SHASH_FOR_EACH (node, new_remotes) { | |
94db5407 BP |
238 | const struct ovsdb_jsonrpc_options *options = node->data; |
239 | struct ovsdb_jsonrpc_remote *remote; | |
240 | ||
241 | remote = shash_find_data(&svr->remotes, node->name); | |
242 | if (!remote) { | |
f125905c | 243 | remote = ovsdb_jsonrpc_server_add_remote(svr, node->name, options); |
94db5407 BP |
244 | if (!remote) { |
245 | continue; | |
246 | } | |
0b1fae1b | 247 | } |
94db5407 BP |
248 | |
249 | ovsdb_jsonrpc_session_set_all_options(remote, options); | |
f85f8ebb | 250 | } |
b93d3b6c | 251 | } |
f85f8ebb | 252 | |
94db5407 | 253 | static struct ovsdb_jsonrpc_remote * |
0b1fae1b | 254 | ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *svr, |
f125905c MM |
255 | const char *name, |
256 | const struct ovsdb_jsonrpc_options *options) | |
b93d3b6c | 257 | { |
0b1fae1b BP |
258 | struct ovsdb_jsonrpc_remote *remote; |
259 | struct pstream *listener; | |
260 | int error; | |
261 | ||
f125905c | 262 | error = jsonrpc_pstream_open(name, &listener, options->dscp); |
0b1fae1b | 263 | if (error && error != EAFNOSUPPORT) { |
10a89ef0 | 264 | VLOG_ERR_RL(&rl, "%s: listen failed: %s", name, ovs_strerror(error)); |
94db5407 | 265 | return NULL; |
0b1fae1b BP |
266 | } |
267 | ||
268 | remote = xmalloc(sizeof *remote); | |
269 | remote->server = svr; | |
270 | remote->listener = listener; | |
417e7e66 | 271 | ovs_list_init(&remote->sessions); |
e879d33e | 272 | remote->dscp = options->dscp; |
9c1a1182 | 273 | remote->read_only = options->read_only; |
d6db7b3c | 274 | remote->role = nullable_xstrdup(options->role); |
0b1fae1b BP |
275 | shash_add(&svr->remotes, name, remote); |
276 | ||
277 | if (!listener) { | |
e51879e9 | 278 | ovsdb_jsonrpc_session_create(remote, jsonrpc_session_open(name, true), |
9c1a1182 | 279 | svr->read_only || remote->read_only); |
0b1fae1b | 280 | } |
94db5407 | 281 | return remote; |
0b1fae1b BP |
282 | } |
283 | ||
284 | static void | |
285 | ovsdb_jsonrpc_server_del_remote(struct shash_node *node) | |
286 | { | |
287 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
288 | ||
289 | ovsdb_jsonrpc_session_close_all(remote); | |
290 | pstream_close(remote->listener); | |
291 | shash_delete(&remote->server->remotes, node); | |
d6db7b3c | 292 | free(remote->role); |
0b1fae1b | 293 | free(remote); |
f85f8ebb BP |
294 | } |
295 | ||
87fcbc60 BP |
296 | /* Stores status information for the remote named 'target', which should have |
297 | * been configured on 'svr' with a call to ovsdb_jsonrpc_server_set_remotes(), | |
298 | * into '*status'. On success returns true, on failure (if 'svr' doesn't have | |
600766e8 | 299 | * a remote named 'target' or if that remote is an outbound remote that has no |
87fcbc60 BP |
300 | * active connections) returns false. On failure, 'status' will be zeroed. |
301 | */ | |
302 | bool | |
303 | ovsdb_jsonrpc_server_get_remote_status( | |
304 | const struct ovsdb_jsonrpc_server *svr, const char *target, | |
305 | struct ovsdb_jsonrpc_remote_status *status) | |
0b3e7a8b | 306 | { |
87fcbc60 | 307 | const struct ovsdb_jsonrpc_remote *remote; |
0b3e7a8b | 308 | |
87fcbc60 | 309 | memset(status, 0, sizeof *status); |
0b3e7a8b | 310 | |
87fcbc60 | 311 | remote = shash_find_data(&svr->remotes, target); |
600766e8 AZ |
312 | |
313 | if (!remote) { | |
314 | return false; | |
315 | } | |
316 | ||
317 | if (remote->listener) { | |
318 | status->bound_port = pstream_get_bound_port(remote->listener); | |
417e7e66 BW |
319 | status->is_connected = !ovs_list_is_empty(&remote->sessions); |
320 | status->n_connections = ovs_list_size(&remote->sessions); | |
600766e8 AZ |
321 | return true; |
322 | } | |
323 | ||
324 | return ovsdb_jsonrpc_active_session_get_status(remote, status); | |
0b3e7a8b AE |
325 | } |
326 | ||
da897f41 BP |
327 | void |
328 | ovsdb_jsonrpc_server_free_remote_status( | |
329 | struct ovsdb_jsonrpc_remote_status *status) | |
330 | { | |
331 | free(status->locks_held); | |
332 | free(status->locks_waiting); | |
333 | free(status->locks_lost); | |
334 | } | |
335 | ||
31d0b6c9 BP |
336 | /* Forces all of the JSON-RPC sessions managed by 'svr' to disconnect and |
337 | * reconnect. */ | |
338 | void | |
e51879e9 | 339 | ovsdb_jsonrpc_server_reconnect(struct ovsdb_jsonrpc_server *svr, bool read_only) |
31d0b6c9 BP |
340 | { |
341 | struct shash_node *node; | |
342 | ||
e51879e9 | 343 | svr->read_only = read_only; |
31d0b6c9 BP |
344 | SHASH_FOR_EACH (node, &svr->remotes) { |
345 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
346 | ||
347 | ovsdb_jsonrpc_session_reconnect_all(remote); | |
348 | } | |
349 | } | |
350 | ||
60e0cd04 AZ |
351 | bool |
352 | ovsdb_jsonrpc_server_is_read_only(struct ovsdb_jsonrpc_server *svr) | |
353 | { | |
354 | return svr->read_only; | |
355 | } | |
356 | ||
f85f8ebb BP |
357 | void |
358 | ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr) | |
359 | { | |
0b1fae1b BP |
360 | struct shash_node *node; |
361 | ||
362 | SHASH_FOR_EACH (node, &svr->remotes) { | |
363 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
364 | ||
04abfbe7 | 365 | if (remote->listener) { |
acdd0764 AZ |
366 | struct stream *stream; |
367 | int error; | |
368 | ||
369 | error = pstream_accept(remote->listener, &stream); | |
370 | if (!error) { | |
371 | struct jsonrpc_session *js; | |
372 | js = jsonrpc_session_open_unreliably(jsonrpc_open(stream), | |
373 | remote->dscp); | |
9c1a1182 LR |
374 | ovsdb_jsonrpc_session_create(remote, js, svr->read_only || |
375 | remote->read_only); | |
acdd0764 AZ |
376 | } else if (error != EAGAIN) { |
377 | VLOG_WARN_RL(&rl, "%s: accept failed: %s", | |
0b1fae1b | 378 | pstream_get_name(remote->listener), |
acdd0764 | 379 | ovs_strerror(error)); |
0b1fae1b | 380 | } |
f85f8ebb | 381 | } |
f85f8ebb | 382 | |
0b1fae1b BP |
383 | ovsdb_jsonrpc_session_run_all(remote); |
384 | } | |
f85f8ebb BP |
385 | } |
386 | ||
387 | void | |
388 | ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr) | |
389 | { | |
0b1fae1b BP |
390 | struct shash_node *node; |
391 | ||
392 | SHASH_FOR_EACH (node, &svr->remotes) { | |
393 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
f85f8ebb | 394 | |
acdd0764 | 395 | if (remote->listener) { |
0b1fae1b | 396 | pstream_wait(remote->listener); |
f85f8ebb | 397 | } |
f85f8ebb | 398 | |
0b1fae1b BP |
399 | ovsdb_jsonrpc_session_wait_all(remote); |
400 | } | |
f85f8ebb | 401 | } |
0d085684 BP |
402 | |
403 | /* Adds some memory usage statistics for 'svr' into 'usage', for use with | |
404 | * memory_report(). */ | |
405 | void | |
406 | ovsdb_jsonrpc_server_get_memory_usage(const struct ovsdb_jsonrpc_server *svr, | |
407 | struct simap *usage) | |
408 | { | |
409 | struct shash_node *node; | |
410 | ||
411 | simap_increase(usage, "sessions", svr->n_sessions); | |
412 | SHASH_FOR_EACH (node, &svr->remotes) { | |
413 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
414 | ||
415 | ovsdb_jsonrpc_session_get_memory_usage_all(remote, usage); | |
416 | } | |
417 | } | |
b93d3b6c BP |
418 | \f |
419 | /* JSON-RPC database server session. */ | |
f85f8ebb | 420 | |
b93d3b6c | 421 | struct ovsdb_jsonrpc_session { |
ca6ba700 | 422 | struct ovs_list node; /* Element in remote's sessions list. */ |
e317253b | 423 | struct ovsdb_session up; |
0b1fae1b | 424 | struct ovsdb_jsonrpc_remote *remote; |
f85f8ebb | 425 | |
b93d3b6c BP |
426 | /* Triggers. */ |
427 | struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */ | |
f85f8ebb | 428 | |
a8425c53 BP |
429 | /* Monitors. */ |
430 | struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"s. */ | |
431 | ||
4931f33a BP |
432 | /* Network connectivity. */ |
433 | struct jsonrpc_session *js; /* JSON-RPC session. */ | |
434 | unsigned int js_seqno; /* Last jsonrpc_session_get_seqno() value. */ | |
e51879e9 AZ |
435 | |
436 | /* Read only. */ | |
437 | bool read_only; /* When true, not allow to modify the | |
438 | database. */ | |
b93d3b6c | 439 | }; |
f85f8ebb | 440 | |
b93d3b6c | 441 | static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *); |
b93d3b6c BP |
442 | static int ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *); |
443 | static void ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *); | |
0d085684 BP |
444 | static void ovsdb_jsonrpc_session_get_memory_usage( |
445 | const struct ovsdb_jsonrpc_session *, struct simap *usage); | |
b93d3b6c | 446 | static void ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *, |
845a1187 | 447 | struct jsonrpc_msg *); |
b93d3b6c BP |
448 | static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *, |
449 | struct jsonrpc_msg *); | |
f85f8ebb | 450 | |
6c2882f9 | 451 | static struct ovsdb_jsonrpc_session * |
0b1fae1b | 452 | ovsdb_jsonrpc_session_create(struct ovsdb_jsonrpc_remote *remote, |
e51879e9 | 453 | struct jsonrpc_session *js, bool read_only) |
f85f8ebb BP |
454 | { |
455 | struct ovsdb_jsonrpc_session *s; | |
456 | ||
457 | s = xzalloc(sizeof *s); | |
b4e8d170 | 458 | ovsdb_session_init(&s->up, &remote->server->up); |
0b1fae1b | 459 | s->remote = remote; |
417e7e66 | 460 | ovs_list_push_back(&remote->sessions, &s->node); |
f85f8ebb | 461 | hmap_init(&s->triggers); |
a8425c53 | 462 | hmap_init(&s->monitors); |
4931f33a BP |
463 | s->js = js; |
464 | s->js_seqno = jsonrpc_session_get_seqno(js); | |
e51879e9 | 465 | s->read_only = read_only; |
6c2882f9 | 466 | |
0b1fae1b | 467 | remote->server->n_sessions++; |
6c2882f9 BP |
468 | |
469 | return s; | |
f85f8ebb BP |
470 | } |
471 | ||
6c2882f9 BP |
472 | static void |
473 | ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *s) | |
474 | { | |
e084f690 | 475 | ovsdb_jsonrpc_monitor_remove_all(s); |
da897f41 | 476 | ovsdb_jsonrpc_session_unlock_all(s); |
aca16ce6 BP |
477 | ovsdb_jsonrpc_trigger_complete_all(s); |
478 | ||
479 | hmap_destroy(&s->monitors); | |
480 | hmap_destroy(&s->triggers); | |
481 | ||
4931f33a | 482 | jsonrpc_session_close(s->js); |
417e7e66 | 483 | ovs_list_remove(&s->node); |
0b1fae1b | 484 | s->remote->server->n_sessions--; |
e317253b | 485 | ovsdb_session_destroy(&s->up); |
e084f690 | 486 | free(s); |
f85f8ebb BP |
487 | } |
488 | ||
4931f33a BP |
489 | static int |
490 | ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *s) | |
6c2882f9 | 491 | { |
4931f33a BP |
492 | jsonrpc_session_run(s->js); |
493 | if (s->js_seqno != jsonrpc_session_get_seqno(s->js)) { | |
494 | s->js_seqno = jsonrpc_session_get_seqno(s->js); | |
b93d3b6c | 495 | ovsdb_jsonrpc_trigger_complete_all(s); |
a8425c53 | 496 | ovsdb_jsonrpc_monitor_remove_all(s); |
da897f41 | 497 | ovsdb_jsonrpc_session_unlock_all(s); |
6c2882f9 | 498 | } |
6c2882f9 | 499 | |
4931f33a | 500 | ovsdb_jsonrpc_trigger_complete_done(s); |
6c2882f9 | 501 | |
633f7247 | 502 | if (!jsonrpc_session_get_backlog(s->js)) { |
48f6e410 BP |
503 | struct jsonrpc_msg *msg; |
504 | ||
505 | ovsdb_jsonrpc_monitor_flush_all(s); | |
506 | ||
507 | msg = jsonrpc_session_recv(s->js); | |
4931f33a | 508 | if (msg) { |
6c2882f9 BP |
509 | if (msg->type == JSONRPC_REQUEST) { |
510 | ovsdb_jsonrpc_session_got_request(s, msg); | |
511 | } else if (msg->type == JSONRPC_NOTIFY) { | |
512 | ovsdb_jsonrpc_session_got_notify(s, msg); | |
513 | } else { | |
514 | VLOG_WARN("%s: received unexpected %s message", | |
4931f33a | 515 | jsonrpc_session_get_name(s->js), |
6c2882f9 | 516 | jsonrpc_msg_type_to_string(msg->type)); |
4931f33a | 517 | jsonrpc_session_force_reconnect(s->js); |
6c2882f9 BP |
518 | jsonrpc_msg_destroy(msg); |
519 | } | |
520 | } | |
6c2882f9 | 521 | } |
4931f33a | 522 | return jsonrpc_session_is_alive(s->js) ? 0 : ETIMEDOUT; |
b93d3b6c | 523 | } |
6c2882f9 | 524 | |
94db5407 BP |
525 | static void |
526 | ovsdb_jsonrpc_session_set_options(struct ovsdb_jsonrpc_session *session, | |
527 | const struct ovsdb_jsonrpc_options *options) | |
528 | { | |
529 | jsonrpc_session_set_max_backoff(session->js, options->max_backoff); | |
530 | jsonrpc_session_set_probe_interval(session->js, options->probe_interval); | |
f125905c | 531 | jsonrpc_session_set_dscp(session->js, options->dscp); |
94db5407 BP |
532 | } |
533 | ||
b93d3b6c | 534 | static void |
0b1fae1b | 535 | ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *remote) |
b93d3b6c BP |
536 | { |
537 | struct ovsdb_jsonrpc_session *s, *next; | |
538 | ||
4e8e4213 | 539 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
b93d3b6c BP |
540 | int error = ovsdb_jsonrpc_session_run(s); |
541 | if (error) { | |
542 | ovsdb_jsonrpc_session_close(s); | |
543 | } | |
544 | } | |
6c2882f9 BP |
545 | } |
546 | ||
547 | static void | |
548 | ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *s) | |
549 | { | |
4931f33a BP |
550 | jsonrpc_session_wait(s->js); |
551 | if (!jsonrpc_session_get_backlog(s->js)) { | |
48f6e410 BP |
552 | if (ovsdb_jsonrpc_monitor_needs_flush(s)) { |
553 | poll_immediate_wake(); | |
554 | } else { | |
555 | jsonrpc_session_recv_wait(s->js); | |
556 | } | |
6c2882f9 | 557 | } |
6c2882f9 BP |
558 | } |
559 | ||
b93d3b6c | 560 | static void |
0b1fae1b | 561 | ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *remote) |
f85f8ebb | 562 | { |
b93d3b6c | 563 | struct ovsdb_jsonrpc_session *s; |
f85f8ebb | 564 | |
4e8e4213 | 565 | LIST_FOR_EACH (s, node, &remote->sessions) { |
b93d3b6c | 566 | ovsdb_jsonrpc_session_wait(s); |
f85f8ebb | 567 | } |
b93d3b6c | 568 | } |
f85f8ebb | 569 | |
0d085684 BP |
570 | static void |
571 | ovsdb_jsonrpc_session_get_memory_usage(const struct ovsdb_jsonrpc_session *s, | |
572 | struct simap *usage) | |
573 | { | |
574 | simap_increase(usage, "triggers", hmap_count(&s->triggers)); | |
0d085684 BP |
575 | simap_increase(usage, "backlog", jsonrpc_session_get_backlog(s->js)); |
576 | } | |
577 | ||
578 | static void | |
579 | ovsdb_jsonrpc_session_get_memory_usage_all( | |
580 | const struct ovsdb_jsonrpc_remote *remote, | |
581 | struct simap *usage) | |
582 | { | |
583 | struct ovsdb_jsonrpc_session *s; | |
584 | ||
585 | LIST_FOR_EACH (s, node, &remote->sessions) { | |
586 | ovsdb_jsonrpc_session_get_memory_usage(s, usage); | |
587 | } | |
588 | } | |
589 | ||
0b1fae1b BP |
590 | static void |
591 | ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *remote) | |
592 | { | |
593 | struct ovsdb_jsonrpc_session *s, *next; | |
594 | ||
4e8e4213 | 595 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
0b1fae1b BP |
596 | ovsdb_jsonrpc_session_close(s); |
597 | } | |
598 | } | |
599 | ||
31d0b6c9 BP |
600 | /* Forces all of the JSON-RPC sessions managed by 'remote' to disconnect and |
601 | * reconnect. */ | |
602 | static void | |
603 | ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *remote) | |
604 | { | |
605 | struct ovsdb_jsonrpc_session *s, *next; | |
606 | ||
4e8e4213 | 607 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
31d0b6c9 BP |
608 | jsonrpc_session_force_reconnect(s->js); |
609 | if (!jsonrpc_session_is_alive(s->js)) { | |
610 | ovsdb_jsonrpc_session_close(s); | |
611 | } | |
612 | } | |
613 | } | |
614 | ||
94db5407 | 615 | /* Sets the options for all of the JSON-RPC sessions managed by 'remote' to |
c2e3cbaf BP |
616 | * 'options'. |
617 | * | |
618 | * (The dscp value can't be changed directly; the caller must instead close and | |
619 | * re-open the session.) */ | |
94db5407 BP |
620 | static void |
621 | ovsdb_jsonrpc_session_set_all_options( | |
622 | struct ovsdb_jsonrpc_remote *remote, | |
623 | const struct ovsdb_jsonrpc_options *options) | |
624 | { | |
625 | struct ovsdb_jsonrpc_session *s; | |
626 | ||
627 | LIST_FOR_EACH (s, node, &remote->sessions) { | |
628 | ovsdb_jsonrpc_session_set_options(s, options); | |
629 | } | |
630 | } | |
631 | ||
600766e8 | 632 | /* Sets the 'status' of for the 'remote' with an outgoing connection. */ |
87fcbc60 | 633 | static bool |
600766e8 AZ |
634 | ovsdb_jsonrpc_active_session_get_status( |
635 | const struct ovsdb_jsonrpc_remote *remote, | |
636 | struct ovsdb_jsonrpc_remote_status *status) | |
0b3e7a8b | 637 | { |
600766e8 | 638 | const struct ovs_list *sessions = &remote->sessions; |
0b3e7a8b | 639 | const struct ovsdb_jsonrpc_session *s; |
600766e8 | 640 | |
417e7e66 | 641 | if (ovs_list_is_empty(sessions)) { |
600766e8 AZ |
642 | return false; |
643 | } | |
644 | ||
417e7e66 BW |
645 | ovs_assert(ovs_list_is_singleton(sessions)); |
646 | s = CONTAINER_OF(ovs_list_front(sessions), struct ovsdb_jsonrpc_session, node); | |
600766e8 AZ |
647 | ovsdb_jsonrpc_session_get_status(s, status); |
648 | status->n_connections = 1; | |
649 | ||
650 | return true; | |
651 | } | |
652 | ||
653 | static void | |
654 | ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_session *session, | |
655 | struct ovsdb_jsonrpc_remote_status *status) | |
656 | { | |
657 | const struct ovsdb_jsonrpc_session *s = session; | |
0b3e7a8b | 658 | const struct jsonrpc_session *js; |
da897f41 | 659 | struct ovsdb_lock_waiter *waiter; |
0b3e7a8b | 660 | struct reconnect_stats rstats; |
da897f41 | 661 | struct ds locks_held, locks_waiting, locks_lost; |
0b3e7a8b | 662 | |
0b3e7a8b | 663 | js = s->js; |
0b3e7a8b AE |
664 | |
665 | status->is_connected = jsonrpc_session_is_connected(js); | |
666 | status->last_error = jsonrpc_session_get_status(js); | |
667 | ||
668 | jsonrpc_session_get_reconnect_stats(js, &rstats); | |
669 | status->state = rstats.state; | |
5eda645e AE |
670 | status->sec_since_connect = rstats.msec_since_connect == UINT_MAX |
671 | ? UINT_MAX : rstats.msec_since_connect / 1000; | |
672 | status->sec_since_disconnect = rstats.msec_since_disconnect == UINT_MAX | |
673 | ? UINT_MAX : rstats.msec_since_disconnect / 1000; | |
87fcbc60 | 674 | |
da897f41 BP |
675 | ds_init(&locks_held); |
676 | ds_init(&locks_waiting); | |
677 | ds_init(&locks_lost); | |
678 | HMAP_FOR_EACH (waiter, session_node, &s->up.waiters) { | |
679 | struct ds *string; | |
680 | ||
681 | string = (ovsdb_lock_waiter_is_owner(waiter) ? &locks_held | |
682 | : waiter->mode == OVSDB_LOCK_WAIT ? &locks_waiting | |
683 | : &locks_lost); | |
684 | if (string->length) { | |
685 | ds_put_char(string, ' '); | |
686 | } | |
687 | ds_put_cstr(string, waiter->lock_name); | |
688 | } | |
689 | status->locks_held = ds_steal_cstr(&locks_held); | |
690 | status->locks_waiting = ds_steal_cstr(&locks_waiting); | |
691 | status->locks_lost = ds_steal_cstr(&locks_lost); | |
0b3e7a8b AE |
692 | } |
693 | ||
b4e8d170 BP |
694 | /* Examines 'request' to determine the database to which it relates, and then |
695 | * searches 's' to find that database: | |
696 | * | |
697 | * - If successful, returns the database and sets '*replyp' to NULL. | |
698 | * | |
699 | * - If no such database exists, returns NULL and sets '*replyp' to an | |
700 | * appropriate JSON-RPC error reply, owned by the caller. */ | |
701 | static struct ovsdb * | |
702 | ovsdb_jsonrpc_lookup_db(const struct ovsdb_jsonrpc_session *s, | |
703 | const struct jsonrpc_msg *request, | |
704 | struct jsonrpc_msg **replyp) | |
9cb53f26 BP |
705 | { |
706 | struct json_array *params; | |
9cb53f26 | 707 | struct ovsdb_error *error; |
b4e8d170 BP |
708 | const char *db_name; |
709 | struct ovsdb *db; | |
9cb53f26 BP |
710 | |
711 | params = json_array(request->params); | |
712 | if (!params->n || params->elems[0]->type != JSON_STRING) { | |
713 | error = ovsdb_syntax_error( | |
714 | request->params, NULL, | |
715 | "%s request params must begin with <db-name>", request->method); | |
716 | goto error; | |
717 | } | |
718 | ||
b4e8d170 BP |
719 | db_name = params->elems[0]->u.string; |
720 | db = shash_find_data(&s->up.server->dbs, db_name); | |
721 | if (!db) { | |
9cb53f26 BP |
722 | error = ovsdb_syntax_error( |
723 | request->params, "unknown database", | |
724 | "%s request specifies unknown database %s", | |
b4e8d170 | 725 | request->method, db_name); |
9cb53f26 BP |
726 | goto error; |
727 | } | |
728 | ||
b4e8d170 BP |
729 | *replyp = NULL; |
730 | return db; | |
9cb53f26 BP |
731 | |
732 | error: | |
201891c3 BP |
733 | *replyp = jsonrpc_create_error(ovsdb_error_to_json_free(error), |
734 | request->id); | |
b4e8d170 | 735 | return NULL; |
9cb53f26 BP |
736 | } |
737 | ||
da897f41 BP |
738 | static struct ovsdb_error * |
739 | ovsdb_jsonrpc_session_parse_lock_name(const struct jsonrpc_msg *request, | |
740 | const char **lock_namep) | |
741 | { | |
742 | const struct json_array *params; | |
743 | ||
744 | params = json_array(request->params); | |
745 | if (params->n != 1 || params->elems[0]->type != JSON_STRING || | |
746 | !ovsdb_parser_is_id(json_string(params->elems[0]))) { | |
747 | *lock_namep = NULL; | |
748 | return ovsdb_syntax_error(request->params, NULL, | |
749 | "%s request params must be <id>", | |
750 | request->method); | |
751 | } | |
752 | ||
753 | *lock_namep = json_string(params->elems[0]); | |
754 | return NULL; | |
755 | } | |
756 | ||
757 | static void | |
758 | ovsdb_jsonrpc_session_notify(struct ovsdb_session *session, | |
759 | const char *lock_name, | |
760 | const char *method) | |
761 | { | |
762 | struct ovsdb_jsonrpc_session *s; | |
763 | struct json *params; | |
764 | ||
765 | s = CONTAINER_OF(session, struct ovsdb_jsonrpc_session, up); | |
766 | params = json_array_create_1(json_string_create(lock_name)); | |
48f6e410 | 767 | ovsdb_jsonrpc_session_send(s, jsonrpc_create_notify(method, params)); |
da897f41 BP |
768 | } |
769 | ||
e51879e9 AZ |
770 | static struct jsonrpc_msg * |
771 | jsonrpc_create_readonly_lock_error(const struct json *id) | |
772 | { | |
773 | return jsonrpc_create_error(json_string_create( | |
774 | "lock and unlock methods not allowed," | |
775 | " DB server is read only."), id); | |
776 | } | |
777 | ||
da897f41 BP |
778 | static struct jsonrpc_msg * |
779 | ovsdb_jsonrpc_session_lock(struct ovsdb_jsonrpc_session *s, | |
780 | struct jsonrpc_msg *request, | |
781 | enum ovsdb_lock_mode mode) | |
782 | { | |
783 | struct ovsdb_lock_waiter *waiter; | |
da897f41 BP |
784 | struct ovsdb_error *error; |
785 | struct ovsdb_session *victim; | |
786 | const char *lock_name; | |
787 | struct json *result; | |
788 | ||
e51879e9 AZ |
789 | if (s->read_only) { |
790 | return jsonrpc_create_readonly_lock_error(request->id); | |
791 | } | |
792 | ||
da897f41 BP |
793 | error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name); |
794 | if (error) { | |
795 | goto error; | |
796 | } | |
797 | ||
798 | /* Report error if this session has issued a "lock" or "steal" without a | |
799 | * matching "unlock" for this lock. */ | |
800 | waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name); | |
801 | if (waiter) { | |
802 | error = ovsdb_syntax_error( | |
803 | request->params, NULL, | |
804 | "must issue \"unlock\" before new \"%s\"", request->method); | |
805 | goto error; | |
806 | } | |
807 | ||
808 | /* Get the lock, add us as a waiter. */ | |
809 | waiter = ovsdb_server_lock(&s->remote->server->up, &s->up, lock_name, mode, | |
810 | &victim); | |
811 | if (victim) { | |
812 | ovsdb_jsonrpc_session_notify(victim, lock_name, "stolen"); | |
813 | } | |
814 | ||
815 | result = json_object_create(); | |
816 | json_object_put(result, "locked", | |
817 | json_boolean_create(ovsdb_lock_waiter_is_owner(waiter))); | |
818 | ||
819 | return jsonrpc_create_reply(result, request->id); | |
820 | ||
821 | error: | |
201891c3 | 822 | return jsonrpc_create_error(ovsdb_error_to_json_free(error), request->id); |
da897f41 BP |
823 | } |
824 | ||
825 | static void | |
826 | ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *s) | |
827 | { | |
828 | struct ovsdb_lock_waiter *waiter, *next; | |
829 | ||
830 | HMAP_FOR_EACH_SAFE (waiter, next, session_node, &s->up.waiters) { | |
831 | ovsdb_jsonrpc_session_unlock__(waiter); | |
832 | } | |
833 | } | |
834 | ||
835 | static void | |
836 | ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *waiter) | |
837 | { | |
838 | struct ovsdb_lock *lock = waiter->lock; | |
839 | ||
840 | if (lock) { | |
841 | struct ovsdb_session *new_owner = ovsdb_lock_waiter_remove(waiter); | |
842 | if (new_owner) { | |
843 | ovsdb_jsonrpc_session_notify(new_owner, lock->name, "locked"); | |
844 | } else { | |
845 | /* ovsdb_server_lock() might have freed 'lock'. */ | |
846 | } | |
847 | } | |
848 | ||
849 | ovsdb_lock_waiter_destroy(waiter); | |
850 | } | |
851 | ||
852 | static struct jsonrpc_msg * | |
853 | ovsdb_jsonrpc_session_unlock(struct ovsdb_jsonrpc_session *s, | |
854 | struct jsonrpc_msg *request) | |
855 | { | |
856 | struct ovsdb_lock_waiter *waiter; | |
da897f41 BP |
857 | struct ovsdb_error *error; |
858 | const char *lock_name; | |
859 | ||
e51879e9 AZ |
860 | if (s->read_only) { |
861 | return jsonrpc_create_readonly_lock_error(request->id); | |
862 | } | |
863 | ||
da897f41 BP |
864 | error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name); |
865 | if (error) { | |
866 | goto error; | |
867 | } | |
868 | ||
869 | /* Report error if this session has not issued a "lock" or "steal" for this | |
870 | * lock. */ | |
871 | waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name); | |
872 | if (!waiter) { | |
873 | error = ovsdb_syntax_error( | |
874 | request->params, NULL, "\"unlock\" without \"lock\" or \"steal\""); | |
875 | goto error; | |
876 | } | |
877 | ||
878 | ovsdb_jsonrpc_session_unlock__(waiter); | |
879 | ||
880 | return jsonrpc_create_reply(json_object_create(), request->id); | |
881 | ||
882 | error: | |
201891c3 | 883 | return jsonrpc_create_error(ovsdb_error_to_json_free(error), request->id); |
da897f41 BP |
884 | } |
885 | ||
b93d3b6c | 886 | static struct jsonrpc_msg * |
b4e8d170 | 887 | execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
b93d3b6c BP |
888 | struct jsonrpc_msg *request) |
889 | { | |
b4e8d170 | 890 | ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params); |
f85f8ebb BP |
891 | request->id = NULL; |
892 | request->params = NULL; | |
e084f690 | 893 | jsonrpc_msg_destroy(request); |
f85f8ebb BP |
894 | return NULL; |
895 | } | |
896 | ||
897 | static void | |
898 | ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s, | |
899 | struct jsonrpc_msg *request) | |
900 | { | |
901 | struct jsonrpc_msg *reply; | |
902 | ||
903 | if (!strcmp(request->method, "transact")) { | |
b4e8d170 | 904 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 905 | if (!reply) { |
b4e8d170 | 906 | reply = execute_transaction(s, db, request); |
9cb53f26 | 907 | } |
92f8d65b | 908 | } else if (!strcmp(request->method, "monitor") || |
c383f3bf LS |
909 | (monitor_cond_enable__ && !strcmp(request->method, |
910 | "monitor_cond"))) { | |
b4e8d170 | 911 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 912 | if (!reply) { |
92f8d65b AZ |
913 | int l = strlen(request->method) - strlen("monitor"); |
914 | enum ovsdb_monitor_version version = l ? OVSDB_MONITOR_V2 | |
915 | : OVSDB_MONITOR_V1; | |
508624b6 | 916 | reply = ovsdb_jsonrpc_monitor_create(s, db, request->params, |
92f8d65b | 917 | version, request->id); |
9cb53f26 | 918 | } |
845a1187 LS |
919 | } else if (!strcmp(request->method, "monitor_cond_change")) { |
920 | reply = ovsdb_jsonrpc_monitor_cond_change(s, request->params, | |
921 | request->id); | |
a8425c53 BP |
922 | } else if (!strcmp(request->method, "monitor_cancel")) { |
923 | reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params), | |
924 | request->id); | |
f85f8ebb | 925 | } else if (!strcmp(request->method, "get_schema")) { |
b4e8d170 | 926 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 927 | if (!reply) { |
b4e8d170 BP |
928 | reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema), |
929 | request->id); | |
9cb53f26 BP |
930 | } |
931 | } else if (!strcmp(request->method, "list_dbs")) { | |
b4e8d170 BP |
932 | size_t n_dbs = shash_count(&s->up.server->dbs); |
933 | struct shash_node *node; | |
934 | struct json **dbs; | |
935 | size_t i; | |
936 | ||
937 | dbs = xmalloc(n_dbs * sizeof *dbs); | |
938 | i = 0; | |
939 | SHASH_FOR_EACH (node, &s->up.server->dbs) { | |
940 | dbs[i++] = json_string_create(node->name); | |
941 | } | |
942 | reply = jsonrpc_create_reply(json_array_create(dbs, n_dbs), | |
943 | request->id); | |
05ac209a AZ |
944 | } else if (!strcmp(request->method, "get_server_id")) { |
945 | const struct uuid *uuid = &s->up.server->uuid; | |
946 | struct json *result; | |
947 | ||
948 | result = json_string_create_nocopy(xasprintf(UUID_FMT, | |
949 | UUID_ARGS(uuid))); | |
950 | reply = jsonrpc_create_reply(result, request->id); | |
da897f41 BP |
951 | } else if (!strcmp(request->method, "lock")) { |
952 | reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_WAIT); | |
953 | } else if (!strcmp(request->method, "steal")) { | |
954 | reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_STEAL); | |
955 | } else if (!strcmp(request->method, "unlock")) { | |
956 | reply = ovsdb_jsonrpc_session_unlock(s, request); | |
6c2882f9 BP |
957 | } else if (!strcmp(request->method, "echo")) { |
958 | reply = jsonrpc_create_reply(json_clone(request->params), request->id); | |
f85f8ebb BP |
959 | } else { |
960 | reply = jsonrpc_create_error(json_string_create("unknown method"), | |
961 | request->id); | |
962 | } | |
963 | ||
964 | if (reply) { | |
965 | jsonrpc_msg_destroy(request); | |
48f6e410 | 966 | ovsdb_jsonrpc_session_send(s, reply); |
f85f8ebb BP |
967 | } |
968 | } | |
969 | ||
970 | static void | |
971 | execute_cancel(struct ovsdb_jsonrpc_session *s, struct jsonrpc_msg *request) | |
972 | { | |
6e79e210 BP |
973 | if (json_array(request->params)->n == 1) { |
974 | struct ovsdb_jsonrpc_trigger *t; | |
975 | struct json *id; | |
f85f8ebb | 976 | |
6e79e210 BP |
977 | id = request->params->u.array.elems[0]; |
978 | t = ovsdb_jsonrpc_trigger_find(s, id, json_hash(id, 0)); | |
979 | if (t) { | |
980 | ovsdb_jsonrpc_trigger_complete(t); | |
981 | } | |
f85f8ebb BP |
982 | } |
983 | } | |
984 | ||
985 | static void | |
986 | ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *s, | |
987 | struct jsonrpc_msg *request) | |
988 | { | |
989 | if (!strcmp(request->method, "cancel")) { | |
990 | execute_cancel(s, request); | |
991 | } | |
992 | jsonrpc_msg_destroy(request); | |
993 | } | |
48f6e410 BP |
994 | |
995 | static void | |
996 | ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *s, | |
997 | struct jsonrpc_msg *msg) | |
998 | { | |
999 | ovsdb_jsonrpc_monitor_flush_all(s); | |
1000 | jsonrpc_session_send(s->js, msg); | |
1001 | } | |
b93d3b6c BP |
1002 | \f |
1003 | /* JSON-RPC database server triggers. | |
1004 | * | |
1005 | * (Every transaction is treated as a trigger even if it doesn't actually have | |
1006 | * any "wait" operations.) */ | |
1007 | ||
1008 | struct ovsdb_jsonrpc_trigger { | |
1009 | struct ovsdb_trigger trigger; | |
b93d3b6c BP |
1010 | struct hmap_node hmap_node; /* In session's "triggers" hmap. */ |
1011 | struct json *id; | |
1012 | }; | |
1013 | ||
1014 | static void | |
b4e8d170 | 1015 | ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
b93d3b6c BP |
1016 | struct json *id, struct json *params) |
1017 | { | |
1018 | struct ovsdb_jsonrpc_trigger *t; | |
1019 | size_t hash; | |
1020 | ||
1021 | /* Check for duplicate ID. */ | |
1022 | hash = json_hash(id, 0); | |
1023 | t = ovsdb_jsonrpc_trigger_find(s, id, hash); | |
1024 | if (t) { | |
4931f33a BP |
1025 | struct jsonrpc_msg *msg; |
1026 | ||
1027 | msg = jsonrpc_create_error(json_string_create("duplicate request ID"), | |
1028 | id); | |
48f6e410 | 1029 | ovsdb_jsonrpc_session_send(s, msg); |
b93d3b6c BP |
1030 | json_destroy(id); |
1031 | json_destroy(params); | |
1032 | return; | |
1033 | } | |
1034 | ||
1035 | /* Insert into trigger table. */ | |
1036 | t = xmalloc(sizeof *t); | |
e51879e9 | 1037 | ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec(), |
d6db7b3c LR |
1038 | s->read_only, s->remote->role, |
1039 | jsonrpc_session_get_id(s->js)); | |
b93d3b6c BP |
1040 | t->id = id; |
1041 | hmap_insert(&s->triggers, &t->hmap_node, hash); | |
1042 | ||
1043 | /* Complete early if possible. */ | |
1044 | if (ovsdb_trigger_is_complete(&t->trigger)) { | |
1045 | ovsdb_jsonrpc_trigger_complete(t); | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | static struct ovsdb_jsonrpc_trigger * | |
1050 | ovsdb_jsonrpc_trigger_find(struct ovsdb_jsonrpc_session *s, | |
1051 | const struct json *id, size_t hash) | |
1052 | { | |
1053 | struct ovsdb_jsonrpc_trigger *t; | |
1054 | ||
4e8e4213 | 1055 | HMAP_FOR_EACH_WITH_HASH (t, hmap_node, hash, &s->triggers) { |
b93d3b6c BP |
1056 | if (json_equal(t->id, id)) { |
1057 | return t; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | return NULL; | |
1062 | } | |
1063 | ||
1064 | static void | |
1065 | ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t) | |
1066 | { | |
e317253b BP |
1067 | struct ovsdb_jsonrpc_session *s; |
1068 | ||
1069 | s = CONTAINER_OF(t->trigger.session, struct ovsdb_jsonrpc_session, up); | |
b93d3b6c | 1070 | |
4931f33a | 1071 | if (jsonrpc_session_is_connected(s->js)) { |
b93d3b6c BP |
1072 | struct jsonrpc_msg *reply; |
1073 | struct json *result; | |
1074 | ||
1075 | result = ovsdb_trigger_steal_result(&t->trigger); | |
1076 | if (result) { | |
1077 | reply = jsonrpc_create_reply(result, t->id); | |
1078 | } else { | |
1079 | reply = jsonrpc_create_error(json_string_create("canceled"), | |
1080 | t->id); | |
1081 | } | |
48f6e410 | 1082 | ovsdb_jsonrpc_session_send(s, reply); |
b93d3b6c BP |
1083 | } |
1084 | ||
1085 | json_destroy(t->id); | |
1086 | ovsdb_trigger_destroy(&t->trigger); | |
1087 | hmap_remove(&s->triggers, &t->hmap_node); | |
1088 | free(t); | |
1089 | } | |
1090 | ||
1091 | static void | |
1092 | ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *s) | |
1093 | { | |
1094 | struct ovsdb_jsonrpc_trigger *t, *next; | |
4e8e4213 | 1095 | HMAP_FOR_EACH_SAFE (t, next, hmap_node, &s->triggers) { |
b93d3b6c BP |
1096 | ovsdb_jsonrpc_trigger_complete(t); |
1097 | } | |
1098 | } | |
1099 | ||
1100 | static void | |
1101 | ovsdb_jsonrpc_trigger_complete_done(struct ovsdb_jsonrpc_session *s) | |
1102 | { | |
417e7e66 | 1103 | while (!ovs_list_is_empty(&s->up.completions)) { |
b93d3b6c | 1104 | struct ovsdb_jsonrpc_trigger *t |
e317253b | 1105 | = CONTAINER_OF(s->up.completions.next, |
b93d3b6c BP |
1106 | struct ovsdb_jsonrpc_trigger, trigger.node); |
1107 | ovsdb_jsonrpc_trigger_complete(t); | |
1108 | } | |
1109 | } | |
a8425c53 | 1110 | \f |
897af587 AZ |
1111 | /* Jsonrpc front end monitor. */ |
1112 | struct ovsdb_jsonrpc_monitor { | |
ad376c93 | 1113 | struct hmap_node node; /* In ovsdb_jsonrpc_session's "monitors". */ |
a8425c53 | 1114 | struct ovsdb_jsonrpc_session *session; |
b4e8d170 | 1115 | struct ovsdb *db; |
a8425c53 | 1116 | struct json *monitor_id; |
897af587 | 1117 | struct ovsdb_monitor *dbmon; |
59c35e11 AZ |
1118 | uint64_t unflushed; /* The first transaction that has not been |
1119 | flushed to the jsonrpc remote client. */ | |
92f8d65b | 1120 | enum ovsdb_monitor_version version; |
71cdf7cd | 1121 | struct ovsdb_monitor_session_condition *condition;/* Session's condition */ |
a8425c53 BP |
1122 | }; |
1123 | ||
2fa1df7b | 1124 | static struct ovsdb_jsonrpc_monitor * |
a8425c53 BP |
1125 | ovsdb_jsonrpc_monitor_find(struct ovsdb_jsonrpc_session *s, |
1126 | const struct json *monitor_id) | |
1127 | { | |
1128 | struct ovsdb_jsonrpc_monitor *m; | |
1129 | ||
4e8e4213 | 1130 | HMAP_FOR_EACH_WITH_HASH (m, node, json_hash(monitor_id, 0), &s->monitors) { |
a8425c53 BP |
1131 | if (json_equal(m->monitor_id, monitor_id)) { |
1132 | return m; | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | return NULL; | |
1137 | } | |
1138 | ||
2fa1df7b AZ |
1139 | static bool |
1140 | parse_bool(struct ovsdb_parser *parser, const char *name, bool default_value) | |
20aa445d | 1141 | { |
2fa1df7b | 1142 | const struct json *json; |
20aa445d | 1143 | |
2fa1df7b AZ |
1144 | json = ovsdb_parser_member(parser, name, OP_BOOLEAN | OP_OPTIONAL); |
1145 | return json ? json_boolean(json) : default_value; | |
f3395ab3 AZ |
1146 | } |
1147 | ||
cab50449 | 1148 | static struct ovsdb_error * OVS_WARN_UNUSED_RESULT |
71cdf7cd LS |
1149 | ovsdb_jsonrpc_parse_monitor_request( |
1150 | struct ovsdb_monitor *dbmon, | |
1151 | const struct ovsdb_table *table, | |
1152 | struct ovsdb_monitor_session_condition *cond, | |
1153 | const struct json *monitor_request) | |
20aa445d | 1154 | { |
83d300f6 | 1155 | const struct ovsdb_table_schema *ts = table->schema; |
897af587 | 1156 | enum ovsdb_monitor_selection select; |
71cdf7cd | 1157 | const struct json *columns, *select_json, *where = NULL; |
20aa445d BP |
1158 | struct ovsdb_parser parser; |
1159 | struct ovsdb_error *error; | |
1160 | ||
1161 | ovsdb_parser_init(&parser, monitor_request, "table %s", ts->name); | |
71cdf7cd LS |
1162 | if (cond) { |
1163 | where = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL); | |
1164 | } | |
20aa445d | 1165 | columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL); |
71cdf7cd | 1166 | |
20aa445d BP |
1167 | select_json = ovsdb_parser_member(&parser, "select", |
1168 | OP_OBJECT | OP_OPTIONAL); | |
71cdf7cd | 1169 | |
20aa445d BP |
1170 | error = ovsdb_parser_finish(&parser); |
1171 | if (error) { | |
1172 | return error; | |
1173 | } | |
1174 | ||
1175 | if (select_json) { | |
1176 | select = 0; | |
1177 | ovsdb_parser_init(&parser, select_json, "table %s select", ts->name); | |
1178 | if (parse_bool(&parser, "initial", true)) { | |
1179 | select |= OJMS_INITIAL; | |
1180 | } | |
1181 | if (parse_bool(&parser, "insert", true)) { | |
1182 | select |= OJMS_INSERT; | |
1183 | } | |
1184 | if (parse_bool(&parser, "delete", true)) { | |
1185 | select |= OJMS_DELETE; | |
1186 | } | |
1187 | if (parse_bool(&parser, "modify", true)) { | |
1188 | select |= OJMS_MODIFY; | |
1189 | } | |
1190 | error = ovsdb_parser_finish(&parser); | |
1191 | if (error) { | |
1192 | return error; | |
1193 | } | |
1194 | } else { | |
1195 | select = OJMS_INITIAL | OJMS_INSERT | OJMS_DELETE | OJMS_MODIFY; | |
1196 | } | |
20aa445d | 1197 | |
ea585a0e | 1198 | ovsdb_monitor_table_add_select(dbmon, table, select); |
20aa445d BP |
1199 | if (columns) { |
1200 | size_t i; | |
1201 | ||
1202 | if (columns->type != JSON_ARRAY) { | |
1203 | return ovsdb_syntax_error(columns, NULL, | |
1204 | "array of column names expected"); | |
1205 | } | |
1206 | ||
1207 | for (i = 0; i < columns->u.array.n; i++) { | |
1208 | const struct ovsdb_column *column; | |
1209 | const char *s; | |
1210 | ||
1211 | if (columns->u.array.elems[i]->type != JSON_STRING) { | |
1212 | return ovsdb_syntax_error(columns, NULL, | |
1213 | "array of column names expected"); | |
1214 | } | |
1215 | ||
1216 | s = columns->u.array.elems[i]->u.string; | |
ea585a0e | 1217 | column = shash_find_data(&table->schema->columns, s); |
20aa445d BP |
1218 | if (!column) { |
1219 | return ovsdb_syntax_error(columns, NULL, "%s is not a valid " | |
1220 | "column name", s); | |
1221 | } | |
6150a75f LS |
1222 | if (ovsdb_monitor_add_column(dbmon, table, column, |
1223 | select, true)) { | |
ec1eadce LS |
1224 | return ovsdb_syntax_error(columns, NULL, "column %s " |
1225 | "mentioned more than once", | |
1226 | column->name); | |
1227 | } | |
20aa445d BP |
1228 | } |
1229 | } else { | |
1230 | struct shash_node *node; | |
1231 | ||
1232 | SHASH_FOR_EACH (node, &ts->columns) { | |
1233 | const struct ovsdb_column *column = node->data; | |
1234 | if (column->index != OVSDB_COL_UUID) { | |
6150a75f LS |
1235 | if (ovsdb_monitor_add_column(dbmon, table, column, |
1236 | select, true)) { | |
ec1eadce LS |
1237 | return ovsdb_syntax_error(columns, NULL, "column %s " |
1238 | "mentioned more than once", | |
1239 | column->name); | |
1240 | } | |
20aa445d BP |
1241 | } |
1242 | } | |
1243 | } | |
71cdf7cd LS |
1244 | if (cond) { |
1245 | error = ovsdb_monitor_table_condition_create(cond, table, where); | |
1246 | if (error) { | |
1247 | return error; | |
1248 | } | |
1249 | } | |
20aa445d BP |
1250 | |
1251 | return NULL; | |
1252 | } | |
1253 | ||
508624b6 | 1254 | static struct jsonrpc_msg * |
b4e8d170 | 1255 | ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
508624b6 | 1256 | struct json *params, |
92f8d65b | 1257 | enum ovsdb_monitor_version version, |
508624b6 | 1258 | const struct json *request_id) |
a8425c53 BP |
1259 | { |
1260 | struct ovsdb_jsonrpc_monitor *m = NULL; | |
6e5a9216 | 1261 | struct ovsdb_monitor *dbmon = NULL; |
a8425c53 BP |
1262 | struct json *monitor_id, *monitor_requests; |
1263 | struct ovsdb_error *error = NULL; | |
1264 | struct shash_node *node; | |
1265 | struct json *json; | |
1266 | ||
9cb53f26 | 1267 | if (json_array(params)->n != 3) { |
a8425c53 BP |
1268 | error = ovsdb_syntax_error(params, NULL, "invalid parameters"); |
1269 | goto error; | |
1270 | } | |
9cb53f26 BP |
1271 | monitor_id = params->u.array.elems[1]; |
1272 | monitor_requests = params->u.array.elems[2]; | |
a8425c53 BP |
1273 | if (monitor_requests->type != JSON_OBJECT) { |
1274 | error = ovsdb_syntax_error(monitor_requests, NULL, | |
1275 | "monitor-requests must be object"); | |
1276 | goto error; | |
1277 | } | |
1278 | ||
1279 | if (ovsdb_jsonrpc_monitor_find(s, monitor_id)) { | |
1280 | error = ovsdb_syntax_error(monitor_id, NULL, "duplicate monitor ID"); | |
1281 | goto error; | |
1282 | } | |
1283 | ||
1284 | m = xzalloc(sizeof *m); | |
a8425c53 | 1285 | m->session = s; |
b4e8d170 | 1286 | m->db = db; |
2fa1df7b | 1287 | m->dbmon = ovsdb_monitor_create(db, m); |
71cdf7cd LS |
1288 | if (version == OVSDB_MONITOR_V2) { |
1289 | m->condition = ovsdb_monitor_session_condition_create(); | |
1290 | } | |
59c35e11 | 1291 | m->unflushed = 0; |
92f8d65b | 1292 | m->version = version; |
a8425c53 BP |
1293 | hmap_insert(&s->monitors, &m->node, json_hash(monitor_id, 0)); |
1294 | m->monitor_id = json_clone(monitor_id); | |
a8425c53 BP |
1295 | |
1296 | SHASH_FOR_EACH (node, json_object(monitor_requests)) { | |
1297 | const struct ovsdb_table *table; | |
20aa445d BP |
1298 | const struct json *mr_value; |
1299 | size_t i; | |
a8425c53 | 1300 | |
b4e8d170 | 1301 | table = ovsdb_get_table(m->db, node->name); |
a8425c53 BP |
1302 | if (!table) { |
1303 | error = ovsdb_syntax_error(NULL, NULL, | |
1304 | "no table named %s", node->name); | |
1305 | goto error; | |
1306 | } | |
1307 | ||
83d300f6 | 1308 | ovsdb_monitor_add_table(m->dbmon, table); |
a8425c53 | 1309 | |
20aa445d BP |
1310 | /* Parse columns. */ |
1311 | mr_value = node->data; | |
20aa445d BP |
1312 | if (mr_value->type == JSON_ARRAY) { |
1313 | const struct json_array *array = &mr_value->u.array; | |
1314 | ||
1315 | for (i = 0; i < array->n; i++) { | |
6150a75f LS |
1316 | error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon, |
1317 | table, | |
71cdf7cd | 1318 | m->condition, |
6150a75f | 1319 | array->elems[i]); |
20aa445d BP |
1320 | if (error) { |
1321 | goto error; | |
1322 | } | |
a8425c53 BP |
1323 | } |
1324 | } else { | |
6150a75f LS |
1325 | error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon, |
1326 | table, | |
71cdf7cd | 1327 | m->condition, |
6150a75f | 1328 | mr_value); |
20aa445d BP |
1329 | if (error) { |
1330 | goto error; | |
a8425c53 BP |
1331 | } |
1332 | } | |
a8425c53 BP |
1333 | } |
1334 | ||
6e5a9216 AZ |
1335 | dbmon = ovsdb_monitor_add(m->dbmon); |
1336 | if (dbmon != m->dbmon) { | |
1337 | /* Found an exisiting dbmon, reuse the current one. */ | |
f76def25 | 1338 | ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed); |
6e5a9216 AZ |
1339 | ovsdb_monitor_add_jsonrpc_monitor(dbmon, m); |
1340 | m->dbmon = dbmon; | |
1341 | } | |
1342 | ||
71cdf7cd LS |
1343 | /* Only now we can bind session's condition to ovsdb_monitor */ |
1344 | if (m->condition) { | |
1345 | ovsdb_monitor_condition_bind(m->dbmon, m->condition); | |
1346 | } | |
1347 | ||
61b63013 | 1348 | ovsdb_monitor_get_initial(m->dbmon); |
f1de87bb | 1349 | json = ovsdb_jsonrpc_monitor_compose_update(m, true); |
61b63013 AZ |
1350 | json = json ? json : json_object_create(); |
1351 | return jsonrpc_create_reply(json, request_id); | |
a8425c53 BP |
1352 | |
1353 | error: | |
23f37a97 | 1354 | if (m) { |
88b63308 | 1355 | ovsdb_jsonrpc_monitor_destroy(m); |
23f37a97 | 1356 | } |
a8425c53 | 1357 | |
201891c3 | 1358 | return jsonrpc_create_error(ovsdb_error_to_json_free(error), request_id); |
a8425c53 BP |
1359 | } |
1360 | ||
845a1187 LS |
1361 | static struct ovsdb_error * |
1362 | ovsdb_jsonrpc_parse_monitor_cond_change_request( | |
1363 | struct ovsdb_jsonrpc_monitor *m, | |
1364 | const struct ovsdb_table *table, | |
1365 | const struct json *cond_change_req) | |
1366 | { | |
1367 | const struct ovsdb_table_schema *ts = table->schema; | |
1368 | const struct json *condition, *columns; | |
1369 | struct ovsdb_parser parser; | |
1370 | struct ovsdb_error *error; | |
1371 | ||
1372 | ovsdb_parser_init(&parser, cond_change_req, "table %s", ts->name); | |
1373 | columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL); | |
1374 | condition = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL); | |
1375 | ||
1376 | error = ovsdb_parser_finish(&parser); | |
1377 | if (error) { | |
1378 | return error; | |
1379 | } | |
1380 | ||
1381 | if (columns) { | |
1382 | error = ovsdb_syntax_error(cond_change_req, NULL, "changing columns " | |
1383 | "is unsupported"); | |
1384 | return error; | |
1385 | } | |
1386 | error = ovsdb_monitor_table_condition_update(m->dbmon, m->condition, table, | |
1387 | condition); | |
1388 | ||
1389 | return error; | |
1390 | } | |
1391 | ||
1392 | static struct jsonrpc_msg * | |
1393 | ovsdb_jsonrpc_monitor_cond_change(struct ovsdb_jsonrpc_session *s, | |
1394 | struct json *params, | |
1395 | const struct json *request_id) | |
1396 | { | |
1397 | struct ovsdb_error *error; | |
1398 | struct ovsdb_jsonrpc_monitor *m; | |
1399 | struct json *monitor_cond_change_reqs; | |
1400 | struct shash_node *node; | |
845a1187 LS |
1401 | |
1402 | if (json_array(params)->n != 3) { | |
1403 | error = ovsdb_syntax_error(params, NULL, "invalid parameters"); | |
1404 | goto error; | |
1405 | } | |
1406 | ||
1407 | m = ovsdb_jsonrpc_monitor_find(s, params->u.array.elems[0]); | |
1408 | if (!m) { | |
a01ca4ee | 1409 | error = ovsdb_syntax_error(params->u.array.elems[0], NULL, |
845a1187 LS |
1410 | "unknown monitor session"); |
1411 | goto error; | |
1412 | } | |
1413 | ||
404682c6 BP |
1414 | const struct json *new_monitor_id = params->u.array.elems[1]; |
1415 | bool changing_id = !json_equal(m->monitor_id, new_monitor_id); | |
1416 | if (changing_id && ovsdb_jsonrpc_monitor_find(s, new_monitor_id)) { | |
1417 | error = ovsdb_syntax_error(new_monitor_id, NULL, | |
1418 | "duplicate monitor ID"); | |
1419 | goto error; | |
1420 | } | |
1421 | ||
845a1187 LS |
1422 | monitor_cond_change_reqs = params->u.array.elems[2]; |
1423 | if (monitor_cond_change_reqs->type != JSON_OBJECT) { | |
1424 | error = | |
1425 | ovsdb_syntax_error(NULL, NULL, | |
1426 | "monitor-cond-change-requests must be object"); | |
1427 | goto error; | |
1428 | } | |
1429 | ||
1430 | SHASH_FOR_EACH (node, json_object(monitor_cond_change_reqs)) { | |
1431 | const struct ovsdb_table *table; | |
1432 | const struct json *mr_value; | |
1433 | size_t i; | |
1434 | ||
1435 | table = ovsdb_get_table(m->db, node->name); | |
1436 | if (!table) { | |
1437 | error = ovsdb_syntax_error(NULL, NULL, | |
1438 | "no table named %s", node->name); | |
1439 | goto error; | |
1440 | } | |
1441 | if (!ovsdb_monitor_table_exists(m->dbmon, table)) { | |
1442 | error = ovsdb_syntax_error(NULL, NULL, | |
1443 | "no table named %s in monitor session", | |
1444 | node->name); | |
1445 | goto error; | |
1446 | } | |
1447 | ||
1448 | mr_value = node->data; | |
1449 | if (mr_value->type == JSON_ARRAY) { | |
1450 | const struct json_array *array = &mr_value->u.array; | |
1451 | ||
1452 | for (i = 0; i < array->n; i++) { | |
1453 | error = ovsdb_jsonrpc_parse_monitor_cond_change_request( | |
1454 | m, table, array->elems[i]); | |
1455 | if (error) { | |
1456 | goto error; | |
1457 | } | |
1458 | } | |
1459 | } else { | |
1460 | error = ovsdb_syntax_error( | |
1461 | NULL, NULL, | |
1462 | "table %s no monitor-cond-change JSON array", | |
1463 | node->name); | |
1464 | goto error; | |
1465 | } | |
1466 | } | |
1467 | ||
404682c6 BP |
1468 | if (changing_id) { |
1469 | hmap_remove(&s->monitors, &m->node); | |
1470 | json_destroy(m->monitor_id); | |
1471 | m->monitor_id = json_clone(new_monitor_id); | |
1472 | hmap_insert(&s->monitors, &m->node, json_hash(m->monitor_id, 0)); | |
1473 | } | |
845a1187 LS |
1474 | |
1475 | /* Send the new update, if any, represents the difference from the old | |
1476 | * condition and the new one. */ | |
1477 | struct json *update_json; | |
1478 | ||
1479 | update_json = ovsdb_monitor_get_update(m->dbmon, false, true, | |
1480 | &m->unflushed, m->condition, m->version); | |
1481 | if (update_json) { | |
1482 | struct jsonrpc_msg *msg; | |
71f21279 | 1483 | struct json *p; |
845a1187 | 1484 | |
71f21279 BP |
1485 | p = json_array_create_2(json_clone(m->monitor_id), update_json); |
1486 | msg = ovsdb_jsonrpc_create_notify(m, p); | |
845a1187 LS |
1487 | jsonrpc_session_send(s->js, msg); |
1488 | } | |
1489 | ||
1490 | return jsonrpc_create_reply(json_object_create(), request_id); | |
1491 | ||
1492 | error: | |
201891c3 | 1493 | return jsonrpc_create_error(ovsdb_error_to_json_free(error), request_id); |
845a1187 LS |
1494 | } |
1495 | ||
a8425c53 BP |
1496 | static struct jsonrpc_msg * |
1497 | ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s, | |
1498 | struct json_array *params, | |
1499 | const struct json *request_id) | |
1500 | { | |
1501 | if (params->n != 1) { | |
1502 | return jsonrpc_create_error(json_string_create("invalid parameters"), | |
1503 | request_id); | |
1504 | } else { | |
1505 | struct ovsdb_jsonrpc_monitor *m; | |
1506 | ||
1507 | m = ovsdb_jsonrpc_monitor_find(s, params->elems[0]); | |
1508 | if (!m) { | |
1509 | return jsonrpc_create_error(json_string_create("unknown monitor"), | |
1510 | request_id); | |
1511 | } else { | |
88b63308 | 1512 | ovsdb_jsonrpc_monitor_destroy(m); |
a8425c53 BP |
1513 | return jsonrpc_create_reply(json_object_create(), request_id); |
1514 | } | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | static void | |
1519 | ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *s) | |
1520 | { | |
1521 | struct ovsdb_jsonrpc_monitor *m, *next; | |
1522 | ||
4e8e4213 | 1523 | HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) { |
88b63308 | 1524 | ovsdb_jsonrpc_monitor_destroy(m); |
a8425c53 BP |
1525 | } |
1526 | } | |
1527 | ||
92d5d643 | 1528 | static struct json * |
1158f320 AZ |
1529 | ovsdb_jsonrpc_monitor_compose_update(struct ovsdb_jsonrpc_monitor *m, |
1530 | bool initial) | |
92d5d643 | 1531 | { |
845a1187 | 1532 | |
8cffdcd0 AZ |
1533 | if (!ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) { |
1534 | return NULL; | |
1535 | } | |
1536 | ||
845a1187 LS |
1537 | return ovsdb_monitor_get_update(m->dbmon, initial, false, |
1538 | &m->unflushed, m->condition, m->version); | |
92d5d643 AZ |
1539 | } |
1540 | ||
48f6e410 BP |
1541 | static bool |
1542 | ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *s) | |
1543 | { | |
1544 | struct ovsdb_jsonrpc_monitor *m; | |
1545 | ||
1546 | HMAP_FOR_EACH (m, node, &s->monitors) { | |
59c35e11 | 1547 | if (ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) { |
dbc1cfbb | 1548 | return true; |
48f6e410 BP |
1549 | } |
1550 | } | |
1551 | ||
1552 | return false; | |
1553 | } | |
1554 | ||
2fa1df7b AZ |
1555 | void |
1556 | ovsdb_jsonrpc_monitor_destroy(struct ovsdb_jsonrpc_monitor *m) | |
1557 | { | |
1558 | json_destroy(m->monitor_id); | |
1559 | hmap_remove(&m->session->monitors, &m->node); | |
f76def25 | 1560 | ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed); |
71cdf7cd | 1561 | ovsdb_monitor_session_condition_destroy(m->condition); |
2fa1df7b AZ |
1562 | free(m); |
1563 | } | |
1564 | ||
92f8d65b AZ |
1565 | static struct jsonrpc_msg * |
1566 | ovsdb_jsonrpc_create_notify(const struct ovsdb_jsonrpc_monitor *m, | |
1567 | struct json *params) | |
1568 | { | |
1569 | const char *method; | |
1570 | ||
1571 | switch(m->version) { | |
1572 | case OVSDB_MONITOR_V1: | |
1573 | method = "update"; | |
1574 | break; | |
1575 | case OVSDB_MONITOR_V2: | |
1576 | method = "update2"; | |
1577 | break; | |
1578 | case OVSDB_MONITOR_VERSION_MAX: | |
1579 | default: | |
1580 | OVS_NOT_REACHED(); | |
1581 | } | |
1582 | ||
1583 | return jsonrpc_create_notify(method, params); | |
1584 | } | |
1585 | ||
64fada26 AZ |
1586 | const struct uuid * |
1587 | ovsdb_jsonrpc_server_get_uuid(const struct ovsdb_jsonrpc_server *s) | |
1588 | { | |
1589 | return &s->up.uuid; | |
1590 | } | |
1591 | ||
48f6e410 BP |
1592 | static void |
1593 | ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s) | |
1594 | { | |
1595 | struct ovsdb_jsonrpc_monitor *m; | |
1596 | ||
1597 | HMAP_FOR_EACH (m, node, &s->monitors) { | |
1598 | struct json *json; | |
1599 | ||
f1de87bb | 1600 | json = ovsdb_jsonrpc_monitor_compose_update(m, false); |
48f6e410 BP |
1601 | if (json) { |
1602 | struct jsonrpc_msg *msg; | |
1603 | struct json *params; | |
1604 | ||
1605 | params = json_array_create_2(json_clone(m->monitor_id), json); | |
92f8d65b | 1606 | msg = ovsdb_jsonrpc_create_notify(m, params); |
48f6e410 BP |
1607 | jsonrpc_session_send(s->js, msg); |
1608 | } | |
1609 | } | |
1610 | } | |
e47cb14c AZ |
1611 | |
1612 | void | |
c383f3bf | 1613 | ovsdb_jsonrpc_disable_monitor_cond(void) |
e47cb14c AZ |
1614 | { |
1615 | /* Once disabled, it is not possible to re-enable it. */ | |
c383f3bf | 1616 | monitor_cond_enable__ = false; |
e47cb14c | 1617 | } |