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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" |
87fcbc60 | 24 | #include "dynamic-string.h" |
f85f8ebb BP |
25 | #include "json.h" |
26 | #include "jsonrpc.h" | |
a8425c53 BP |
27 | #include "ovsdb-error.h" |
28 | #include "ovsdb-parser.h" | |
f85f8ebb | 29 | #include "ovsdb.h" |
48f6e410 | 30 | #include "poll-loop.h" |
6c2882f9 | 31 | #include "reconnect.h" |
a8425c53 | 32 | #include "row.h" |
e317253b | 33 | #include "server.h" |
0d085684 | 34 | #include "simap.h" |
f85f8ebb | 35 | #include "stream.h" |
a8425c53 | 36 | #include "table.h" |
f85f8ebb | 37 | #include "timeval.h" |
a8425c53 | 38 | #include "transaction.h" |
f85f8ebb | 39 | #include "trigger.h" |
2fa1df7b | 40 | #include "monitor.h" |
e6211adc | 41 | #include "openvswitch/vlog.h" |
f85f8ebb | 42 | |
d98e6007 | 43 | VLOG_DEFINE_THIS_MODULE(ovsdb_jsonrpc_server); |
5136ce49 | 44 | |
0b1fae1b | 45 | struct ovsdb_jsonrpc_remote; |
b93d3b6c | 46 | struct ovsdb_jsonrpc_session; |
f85f8ebb | 47 | |
0b1fae1b | 48 | /* Message rate-limiting. */ |
d3d8f1f7 | 49 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
0b1fae1b | 50 | |
a8425c53 | 51 | /* Sessions. */ |
0b1fae1b BP |
52 | static struct ovsdb_jsonrpc_session *ovsdb_jsonrpc_session_create( |
53 | struct ovsdb_jsonrpc_remote *, struct jsonrpc_session *); | |
54 | static void ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *); | |
55 | static void ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *); | |
0d085684 BP |
56 | static void ovsdb_jsonrpc_session_get_memory_usage_all( |
57 | const struct ovsdb_jsonrpc_remote *, struct simap *usage); | |
0b1fae1b | 58 | static void ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *); |
31d0b6c9 | 59 | static void ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *); |
94db5407 BP |
60 | static void ovsdb_jsonrpc_session_set_all_options( |
61 | struct ovsdb_jsonrpc_remote *, const struct ovsdb_jsonrpc_options *); | |
87fcbc60 | 62 | static bool ovsdb_jsonrpc_session_get_status( |
0b3e7a8b | 63 | const struct ovsdb_jsonrpc_remote *, |
87fcbc60 | 64 | struct ovsdb_jsonrpc_remote_status *); |
da897f41 BP |
65 | static void ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *); |
66 | static void ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *); | |
48f6e410 BP |
67 | static void ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *, |
68 | struct jsonrpc_msg *); | |
b93d3b6c | 69 | |
a8425c53 | 70 | /* Triggers. */ |
b93d3b6c | 71 | static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *, |
b4e8d170 | 72 | struct ovsdb *, |
b93d3b6c BP |
73 | struct json *id, struct json *params); |
74 | static struct ovsdb_jsonrpc_trigger *ovsdb_jsonrpc_trigger_find( | |
75 | struct ovsdb_jsonrpc_session *, const struct json *id, size_t hash); | |
76 | static void ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *); | |
77 | static void ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *); | |
78 | static void ovsdb_jsonrpc_trigger_complete_done( | |
79 | struct ovsdb_jsonrpc_session *); | |
a8425c53 BP |
80 | |
81 | /* Monitors. */ | |
508624b6 BP |
82 | static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_create( |
83 | struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params, | |
84 | const struct json *request_id); | |
a8425c53 BP |
85 | static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cancel( |
86 | struct ovsdb_jsonrpc_session *, | |
87 | struct json_array *params, | |
88 | const struct json *request_id); | |
89 | static void ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *); | |
48f6e410 BP |
90 | static void ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *); |
91 | static bool ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *); | |
b93d3b6c BP |
92 | \f |
93 | /* JSON-RPC database server. */ | |
f85f8ebb BP |
94 | |
95 | struct ovsdb_jsonrpc_server { | |
e317253b | 96 | struct ovsdb_server up; |
f85f8ebb | 97 | unsigned int n_sessions, max_sessions; |
0b1fae1b BP |
98 | struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */ |
99 | }; | |
f85f8ebb | 100 | |
0b1fae1b BP |
101 | /* A configured remote. This is either a passive stream listener plus a list |
102 | * of the currently connected sessions, or a list of exactly one active | |
103 | * session. */ | |
104 | struct ovsdb_jsonrpc_remote { | |
105 | struct ovsdb_jsonrpc_server *server; | |
106 | struct pstream *listener; /* Listener, if passive. */ | |
ca6ba700 | 107 | struct ovs_list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */ |
e879d33e | 108 | uint8_t dscp; |
f85f8ebb BP |
109 | }; |
110 | ||
94db5407 | 111 | static struct ovsdb_jsonrpc_remote *ovsdb_jsonrpc_server_add_remote( |
f125905c MM |
112 | struct ovsdb_jsonrpc_server *, const char *name, |
113 | const struct ovsdb_jsonrpc_options *options | |
114 | ); | |
0b1fae1b BP |
115 | static void ovsdb_jsonrpc_server_del_remote(struct shash_node *); |
116 | ||
b4e8d170 BP |
117 | /* Creates and returns a new server to provide JSON-RPC access to an OVSDB. |
118 | * | |
119 | * The caller must call ovsdb_jsonrpc_server_add_db() for each database to | |
120 | * which 'server' should provide access. */ | |
b93d3b6c | 121 | struct ovsdb_jsonrpc_server * |
b4e8d170 | 122 | ovsdb_jsonrpc_server_create(void) |
f85f8ebb | 123 | { |
b93d3b6c | 124 | struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server); |
b4e8d170 | 125 | ovsdb_server_init(&server->up); |
bbc45f03 | 126 | server->max_sessions = 330; /* Random limit. */ |
0b1fae1b | 127 | shash_init(&server->remotes); |
b93d3b6c BP |
128 | return server; |
129 | } | |
f85f8ebb | 130 | |
b4e8d170 BP |
131 | /* Adds 'db' to the set of databases served out by 'svr'. Returns true if |
132 | * successful, false if 'db''s name is the same as some database already in | |
133 | * 'server'. */ | |
134 | bool | |
135 | ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *svr, struct ovsdb *db) | |
136 | { | |
0a3b723b BP |
137 | /* The OVSDB protocol doesn't have a way to notify a client that a |
138 | * database has been added. If some client tried to use the database | |
139 | * that we're adding and failed, then forcing it to reconnect seems like | |
140 | * a reasonable way to make it try again. | |
141 | * | |
142 | * If this is too big of a hammer in practice, we could be more selective, | |
143 | * e.g. disconnect only connections that actually tried to use a database | |
144 | * with 'db''s name. */ | |
145 | ovsdb_jsonrpc_server_reconnect(svr); | |
146 | ||
b4e8d170 BP |
147 | return ovsdb_server_add_db(&svr->up, db); |
148 | } | |
149 | ||
0a3b723b BP |
150 | /* Removes 'db' from the set of databases served out by 'svr'. Returns |
151 | * true if successful, false if there is no database associated with 'db'. */ | |
152 | bool | |
153 | ovsdb_jsonrpc_server_remove_db(struct ovsdb_jsonrpc_server *svr, | |
154 | struct ovsdb *db) | |
155 | { | |
156 | /* There might be pointers to 'db' from 'svr', such as monitors or | |
157 | * outstanding transactions. Disconnect all JSON-RPC connections to avoid | |
158 | * accesses to freed memory. | |
159 | * | |
160 | * If this is too big of a hammer in practice, we could be more selective, | |
161 | * e.g. disconnect only connections that actually reference 'db'. */ | |
162 | ovsdb_jsonrpc_server_reconnect(svr); | |
163 | ||
164 | return ovsdb_server_remove_db(&svr->up, db); | |
165 | } | |
166 | ||
23935e8b BP |
167 | void |
168 | ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr) | |
169 | { | |
170 | struct shash_node *node, *next; | |
171 | ||
172 | SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) { | |
173 | ovsdb_jsonrpc_server_del_remote(node); | |
174 | } | |
175 | shash_destroy(&svr->remotes); | |
e317253b | 176 | ovsdb_server_destroy(&svr->up); |
23935e8b BP |
177 | free(svr); |
178 | } | |
179 | ||
94db5407 | 180 | struct ovsdb_jsonrpc_options * |
f1936eb6 | 181 | ovsdb_jsonrpc_default_options(const char *target) |
94db5407 BP |
182 | { |
183 | struct ovsdb_jsonrpc_options *options = xzalloc(sizeof *options); | |
94db5407 | 184 | options->max_backoff = RECONNECT_DEFAULT_MAX_BACKOFF; |
f1936eb6 EJ |
185 | options->probe_interval = (stream_or_pstream_needs_probes(target) |
186 | ? RECONNECT_DEFAULT_PROBE_INTERVAL | |
187 | : 0); | |
94db5407 BP |
188 | return options; |
189 | } | |
190 | ||
191 | /* Sets 'svr''s current set of remotes to the names in 'new_remotes', with | |
192 | * options in the struct ovsdb_jsonrpc_options supplied as the data values. | |
0b1fae1b BP |
193 | * |
194 | * A remote is an active or passive stream connection method, e.g. "pssl:" or | |
195 | * "tcp:1.2.3.4". */ | |
6dea5eaf | 196 | void |
0b1fae1b BP |
197 | ovsdb_jsonrpc_server_set_remotes(struct ovsdb_jsonrpc_server *svr, |
198 | const struct shash *new_remotes) | |
b93d3b6c | 199 | { |
0b1fae1b BP |
200 | struct shash_node *node, *next; |
201 | ||
202 | SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) { | |
c2e3cbaf BP |
203 | struct ovsdb_jsonrpc_remote *remote = node->data; |
204 | struct ovsdb_jsonrpc_options *options | |
205 | = shash_find_data(new_remotes, node->name); | |
206 | ||
207 | if (!options) { | |
f97ffebf | 208 | VLOG_INFO("%s: remote deconfigured", node->name); |
0b1fae1b | 209 | ovsdb_jsonrpc_server_del_remote(node); |
c2e3cbaf BP |
210 | } else if (options->dscp != remote->dscp) { |
211 | ovsdb_jsonrpc_server_del_remote(node); | |
212 | } | |
0b1fae1b BP |
213 | } |
214 | SHASH_FOR_EACH (node, new_remotes) { | |
94db5407 BP |
215 | const struct ovsdb_jsonrpc_options *options = node->data; |
216 | struct ovsdb_jsonrpc_remote *remote; | |
217 | ||
218 | remote = shash_find_data(&svr->remotes, node->name); | |
219 | if (!remote) { | |
f125905c | 220 | remote = ovsdb_jsonrpc_server_add_remote(svr, node->name, options); |
94db5407 BP |
221 | if (!remote) { |
222 | continue; | |
223 | } | |
0b1fae1b | 224 | } |
94db5407 BP |
225 | |
226 | ovsdb_jsonrpc_session_set_all_options(remote, options); | |
f85f8ebb | 227 | } |
b93d3b6c | 228 | } |
f85f8ebb | 229 | |
94db5407 | 230 | static struct ovsdb_jsonrpc_remote * |
0b1fae1b | 231 | ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *svr, |
f125905c MM |
232 | const char *name, |
233 | const struct ovsdb_jsonrpc_options *options) | |
b93d3b6c | 234 | { |
0b1fae1b BP |
235 | struct ovsdb_jsonrpc_remote *remote; |
236 | struct pstream *listener; | |
237 | int error; | |
238 | ||
f125905c | 239 | error = jsonrpc_pstream_open(name, &listener, options->dscp); |
0b1fae1b | 240 | if (error && error != EAFNOSUPPORT) { |
10a89ef0 | 241 | VLOG_ERR_RL(&rl, "%s: listen failed: %s", name, ovs_strerror(error)); |
94db5407 | 242 | return NULL; |
0b1fae1b BP |
243 | } |
244 | ||
245 | remote = xmalloc(sizeof *remote); | |
246 | remote->server = svr; | |
247 | remote->listener = listener; | |
248 | list_init(&remote->sessions); | |
e879d33e | 249 | remote->dscp = options->dscp; |
0b1fae1b BP |
250 | shash_add(&svr->remotes, name, remote); |
251 | ||
252 | if (!listener) { | |
fba6bd1d | 253 | ovsdb_jsonrpc_session_create(remote, jsonrpc_session_open(name, true)); |
0b1fae1b | 254 | } |
94db5407 | 255 | return remote; |
0b1fae1b BP |
256 | } |
257 | ||
258 | static void | |
259 | ovsdb_jsonrpc_server_del_remote(struct shash_node *node) | |
260 | { | |
261 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
262 | ||
263 | ovsdb_jsonrpc_session_close_all(remote); | |
264 | pstream_close(remote->listener); | |
265 | shash_delete(&remote->server->remotes, node); | |
266 | free(remote); | |
f85f8ebb BP |
267 | } |
268 | ||
87fcbc60 BP |
269 | /* Stores status information for the remote named 'target', which should have |
270 | * been configured on 'svr' with a call to ovsdb_jsonrpc_server_set_remotes(), | |
271 | * into '*status'. On success returns true, on failure (if 'svr' doesn't have | |
272 | * a remote named 'target' or if that remote is an inbound remote that has no | |
273 | * active connections) returns false. On failure, 'status' will be zeroed. | |
274 | */ | |
275 | bool | |
276 | ovsdb_jsonrpc_server_get_remote_status( | |
277 | const struct ovsdb_jsonrpc_server *svr, const char *target, | |
278 | struct ovsdb_jsonrpc_remote_status *status) | |
0b3e7a8b | 279 | { |
87fcbc60 | 280 | const struct ovsdb_jsonrpc_remote *remote; |
0b3e7a8b | 281 | |
87fcbc60 | 282 | memset(status, 0, sizeof *status); |
0b3e7a8b | 283 | |
87fcbc60 BP |
284 | remote = shash_find_data(&svr->remotes, target); |
285 | return remote && ovsdb_jsonrpc_session_get_status(remote, status); | |
0b3e7a8b AE |
286 | } |
287 | ||
da897f41 BP |
288 | void |
289 | ovsdb_jsonrpc_server_free_remote_status( | |
290 | struct ovsdb_jsonrpc_remote_status *status) | |
291 | { | |
292 | free(status->locks_held); | |
293 | free(status->locks_waiting); | |
294 | free(status->locks_lost); | |
295 | } | |
296 | ||
31d0b6c9 BP |
297 | /* Forces all of the JSON-RPC sessions managed by 'svr' to disconnect and |
298 | * reconnect. */ | |
299 | void | |
300 | ovsdb_jsonrpc_server_reconnect(struct ovsdb_jsonrpc_server *svr) | |
301 | { | |
302 | struct shash_node *node; | |
303 | ||
304 | SHASH_FOR_EACH (node, &svr->remotes) { | |
305 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
306 | ||
307 | ovsdb_jsonrpc_session_reconnect_all(remote); | |
308 | } | |
309 | } | |
310 | ||
f85f8ebb BP |
311 | void |
312 | ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr) | |
313 | { | |
0b1fae1b BP |
314 | struct shash_node *node; |
315 | ||
316 | SHASH_FOR_EACH (node, &svr->remotes) { | |
317 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
318 | ||
04abfbe7 AZ |
319 | if (remote->listener) { |
320 | if (svr->n_sessions < svr->max_sessions) { | |
321 | struct stream *stream; | |
322 | int error; | |
323 | ||
324 | error = pstream_accept(remote->listener, &stream); | |
325 | if (!error) { | |
326 | struct jsonrpc_session *js; | |
327 | js = jsonrpc_session_open_unreliably(jsonrpc_open(stream), | |
328 | remote->dscp); | |
329 | ovsdb_jsonrpc_session_create(remote, js); | |
330 | } else if (error != EAGAIN) { | |
331 | VLOG_WARN_RL(&rl, "%s: accept failed: %s", | |
332 | pstream_get_name(remote->listener), | |
333 | ovs_strerror(error)); | |
334 | } | |
335 | } else { | |
336 | VLOG_WARN_RL(&rl, "%s: connection exceeded maximum (%d)", | |
0b1fae1b | 337 | pstream_get_name(remote->listener), |
04abfbe7 | 338 | svr->max_sessions); |
0b1fae1b | 339 | } |
f85f8ebb | 340 | } |
f85f8ebb | 341 | |
0b1fae1b BP |
342 | ovsdb_jsonrpc_session_run_all(remote); |
343 | } | |
f85f8ebb BP |
344 | } |
345 | ||
346 | void | |
347 | ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr) | |
348 | { | |
0b1fae1b BP |
349 | struct shash_node *node; |
350 | ||
351 | SHASH_FOR_EACH (node, &svr->remotes) { | |
352 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
f85f8ebb | 353 | |
0b1fae1b BP |
354 | if (remote->listener && svr->n_sessions < svr->max_sessions) { |
355 | pstream_wait(remote->listener); | |
f85f8ebb | 356 | } |
f85f8ebb | 357 | |
0b1fae1b BP |
358 | ovsdb_jsonrpc_session_wait_all(remote); |
359 | } | |
f85f8ebb | 360 | } |
0d085684 BP |
361 | |
362 | /* Adds some memory usage statistics for 'svr' into 'usage', for use with | |
363 | * memory_report(). */ | |
364 | void | |
365 | ovsdb_jsonrpc_server_get_memory_usage(const struct ovsdb_jsonrpc_server *svr, | |
366 | struct simap *usage) | |
367 | { | |
368 | struct shash_node *node; | |
369 | ||
370 | simap_increase(usage, "sessions", svr->n_sessions); | |
371 | SHASH_FOR_EACH (node, &svr->remotes) { | |
372 | struct ovsdb_jsonrpc_remote *remote = node->data; | |
373 | ||
374 | ovsdb_jsonrpc_session_get_memory_usage_all(remote, usage); | |
375 | } | |
376 | } | |
b93d3b6c BP |
377 | \f |
378 | /* JSON-RPC database server session. */ | |
f85f8ebb | 379 | |
b93d3b6c | 380 | struct ovsdb_jsonrpc_session { |
ca6ba700 | 381 | struct ovs_list node; /* Element in remote's sessions list. */ |
e317253b | 382 | struct ovsdb_session up; |
0b1fae1b | 383 | struct ovsdb_jsonrpc_remote *remote; |
f85f8ebb | 384 | |
b93d3b6c BP |
385 | /* Triggers. */ |
386 | struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */ | |
f85f8ebb | 387 | |
a8425c53 BP |
388 | /* Monitors. */ |
389 | struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"s. */ | |
390 | ||
4931f33a BP |
391 | /* Network connectivity. */ |
392 | struct jsonrpc_session *js; /* JSON-RPC session. */ | |
393 | unsigned int js_seqno; /* Last jsonrpc_session_get_seqno() value. */ | |
b93d3b6c | 394 | }; |
f85f8ebb | 395 | |
b93d3b6c | 396 | static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *); |
b93d3b6c BP |
397 | static int ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *); |
398 | static void ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *); | |
0d085684 BP |
399 | static void ovsdb_jsonrpc_session_get_memory_usage( |
400 | const struct ovsdb_jsonrpc_session *, struct simap *usage); | |
b93d3b6c BP |
401 | static void ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *, |
402 | struct jsonrpc_msg *); | |
403 | static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *, | |
404 | struct jsonrpc_msg *); | |
f85f8ebb | 405 | |
6c2882f9 | 406 | static struct ovsdb_jsonrpc_session * |
0b1fae1b | 407 | ovsdb_jsonrpc_session_create(struct ovsdb_jsonrpc_remote *remote, |
4931f33a | 408 | struct jsonrpc_session *js) |
f85f8ebb BP |
409 | { |
410 | struct ovsdb_jsonrpc_session *s; | |
411 | ||
412 | s = xzalloc(sizeof *s); | |
b4e8d170 | 413 | ovsdb_session_init(&s->up, &remote->server->up); |
0b1fae1b BP |
414 | s->remote = remote; |
415 | list_push_back(&remote->sessions, &s->node); | |
f85f8ebb | 416 | hmap_init(&s->triggers); |
a8425c53 | 417 | hmap_init(&s->monitors); |
4931f33a BP |
418 | s->js = js; |
419 | s->js_seqno = jsonrpc_session_get_seqno(js); | |
6c2882f9 | 420 | |
0b1fae1b | 421 | remote->server->n_sessions++; |
6c2882f9 BP |
422 | |
423 | return s; | |
f85f8ebb BP |
424 | } |
425 | ||
6c2882f9 BP |
426 | static void |
427 | ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *s) | |
428 | { | |
e084f690 | 429 | ovsdb_jsonrpc_monitor_remove_all(s); |
da897f41 | 430 | ovsdb_jsonrpc_session_unlock_all(s); |
aca16ce6 BP |
431 | ovsdb_jsonrpc_trigger_complete_all(s); |
432 | ||
433 | hmap_destroy(&s->monitors); | |
434 | hmap_destroy(&s->triggers); | |
435 | ||
4931f33a | 436 | jsonrpc_session_close(s->js); |
f85f8ebb | 437 | list_remove(&s->node); |
0b1fae1b | 438 | s->remote->server->n_sessions--; |
e317253b | 439 | ovsdb_session_destroy(&s->up); |
e084f690 | 440 | free(s); |
f85f8ebb BP |
441 | } |
442 | ||
4931f33a BP |
443 | static int |
444 | ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *s) | |
6c2882f9 | 445 | { |
4931f33a BP |
446 | jsonrpc_session_run(s->js); |
447 | if (s->js_seqno != jsonrpc_session_get_seqno(s->js)) { | |
448 | s->js_seqno = jsonrpc_session_get_seqno(s->js); | |
b93d3b6c | 449 | ovsdb_jsonrpc_trigger_complete_all(s); |
a8425c53 | 450 | ovsdb_jsonrpc_monitor_remove_all(s); |
da897f41 | 451 | ovsdb_jsonrpc_session_unlock_all(s); |
6c2882f9 | 452 | } |
6c2882f9 | 453 | |
4931f33a | 454 | ovsdb_jsonrpc_trigger_complete_done(s); |
6c2882f9 | 455 | |
633f7247 | 456 | if (!jsonrpc_session_get_backlog(s->js)) { |
48f6e410 BP |
457 | struct jsonrpc_msg *msg; |
458 | ||
459 | ovsdb_jsonrpc_monitor_flush_all(s); | |
460 | ||
461 | msg = jsonrpc_session_recv(s->js); | |
4931f33a | 462 | if (msg) { |
6c2882f9 BP |
463 | if (msg->type == JSONRPC_REQUEST) { |
464 | ovsdb_jsonrpc_session_got_request(s, msg); | |
465 | } else if (msg->type == JSONRPC_NOTIFY) { | |
466 | ovsdb_jsonrpc_session_got_notify(s, msg); | |
467 | } else { | |
468 | VLOG_WARN("%s: received unexpected %s message", | |
4931f33a | 469 | jsonrpc_session_get_name(s->js), |
6c2882f9 | 470 | jsonrpc_msg_type_to_string(msg->type)); |
4931f33a | 471 | jsonrpc_session_force_reconnect(s->js); |
6c2882f9 BP |
472 | jsonrpc_msg_destroy(msg); |
473 | } | |
474 | } | |
6c2882f9 | 475 | } |
4931f33a | 476 | return jsonrpc_session_is_alive(s->js) ? 0 : ETIMEDOUT; |
b93d3b6c | 477 | } |
6c2882f9 | 478 | |
94db5407 BP |
479 | static void |
480 | ovsdb_jsonrpc_session_set_options(struct ovsdb_jsonrpc_session *session, | |
481 | const struct ovsdb_jsonrpc_options *options) | |
482 | { | |
483 | jsonrpc_session_set_max_backoff(session->js, options->max_backoff); | |
484 | jsonrpc_session_set_probe_interval(session->js, options->probe_interval); | |
f125905c | 485 | jsonrpc_session_set_dscp(session->js, options->dscp); |
94db5407 BP |
486 | } |
487 | ||
b93d3b6c | 488 | static void |
0b1fae1b | 489 | ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *remote) |
b93d3b6c BP |
490 | { |
491 | struct ovsdb_jsonrpc_session *s, *next; | |
492 | ||
4e8e4213 | 493 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
b93d3b6c BP |
494 | int error = ovsdb_jsonrpc_session_run(s); |
495 | if (error) { | |
496 | ovsdb_jsonrpc_session_close(s); | |
497 | } | |
498 | } | |
6c2882f9 BP |
499 | } |
500 | ||
501 | static void | |
502 | ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *s) | |
503 | { | |
4931f33a BP |
504 | jsonrpc_session_wait(s->js); |
505 | if (!jsonrpc_session_get_backlog(s->js)) { | |
48f6e410 BP |
506 | if (ovsdb_jsonrpc_monitor_needs_flush(s)) { |
507 | poll_immediate_wake(); | |
508 | } else { | |
509 | jsonrpc_session_recv_wait(s->js); | |
510 | } | |
6c2882f9 | 511 | } |
6c2882f9 BP |
512 | } |
513 | ||
b93d3b6c | 514 | static void |
0b1fae1b | 515 | ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *remote) |
f85f8ebb | 516 | { |
b93d3b6c | 517 | struct ovsdb_jsonrpc_session *s; |
f85f8ebb | 518 | |
4e8e4213 | 519 | LIST_FOR_EACH (s, node, &remote->sessions) { |
b93d3b6c | 520 | ovsdb_jsonrpc_session_wait(s); |
f85f8ebb | 521 | } |
b93d3b6c | 522 | } |
f85f8ebb | 523 | |
0d085684 BP |
524 | static void |
525 | ovsdb_jsonrpc_session_get_memory_usage(const struct ovsdb_jsonrpc_session *s, | |
526 | struct simap *usage) | |
527 | { | |
528 | simap_increase(usage, "triggers", hmap_count(&s->triggers)); | |
529 | simap_increase(usage, "monitors", hmap_count(&s->monitors)); | |
530 | simap_increase(usage, "backlog", jsonrpc_session_get_backlog(s->js)); | |
531 | } | |
532 | ||
533 | static void | |
534 | ovsdb_jsonrpc_session_get_memory_usage_all( | |
535 | const struct ovsdb_jsonrpc_remote *remote, | |
536 | struct simap *usage) | |
537 | { | |
538 | struct ovsdb_jsonrpc_session *s; | |
539 | ||
540 | LIST_FOR_EACH (s, node, &remote->sessions) { | |
541 | ovsdb_jsonrpc_session_get_memory_usage(s, usage); | |
542 | } | |
543 | } | |
544 | ||
0b1fae1b BP |
545 | static void |
546 | ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *remote) | |
547 | { | |
548 | struct ovsdb_jsonrpc_session *s, *next; | |
549 | ||
4e8e4213 | 550 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
0b1fae1b BP |
551 | ovsdb_jsonrpc_session_close(s); |
552 | } | |
553 | } | |
554 | ||
31d0b6c9 BP |
555 | /* Forces all of the JSON-RPC sessions managed by 'remote' to disconnect and |
556 | * reconnect. */ | |
557 | static void | |
558 | ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *remote) | |
559 | { | |
560 | struct ovsdb_jsonrpc_session *s, *next; | |
561 | ||
4e8e4213 | 562 | LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) { |
31d0b6c9 BP |
563 | jsonrpc_session_force_reconnect(s->js); |
564 | if (!jsonrpc_session_is_alive(s->js)) { | |
565 | ovsdb_jsonrpc_session_close(s); | |
566 | } | |
567 | } | |
568 | } | |
569 | ||
94db5407 | 570 | /* Sets the options for all of the JSON-RPC sessions managed by 'remote' to |
c2e3cbaf BP |
571 | * 'options'. |
572 | * | |
573 | * (The dscp value can't be changed directly; the caller must instead close and | |
574 | * re-open the session.) */ | |
94db5407 BP |
575 | static void |
576 | ovsdb_jsonrpc_session_set_all_options( | |
577 | struct ovsdb_jsonrpc_remote *remote, | |
578 | const struct ovsdb_jsonrpc_options *options) | |
579 | { | |
580 | struct ovsdb_jsonrpc_session *s; | |
581 | ||
582 | LIST_FOR_EACH (s, node, &remote->sessions) { | |
583 | ovsdb_jsonrpc_session_set_options(s, options); | |
584 | } | |
585 | } | |
586 | ||
87fcbc60 | 587 | static bool |
0b3e7a8b | 588 | ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_remote *remote, |
87fcbc60 | 589 | struct ovsdb_jsonrpc_remote_status *status) |
0b3e7a8b AE |
590 | { |
591 | const struct ovsdb_jsonrpc_session *s; | |
592 | const struct jsonrpc_session *js; | |
da897f41 | 593 | struct ovsdb_lock_waiter *waiter; |
0b3e7a8b | 594 | struct reconnect_stats rstats; |
da897f41 | 595 | struct ds locks_held, locks_waiting, locks_lost; |
0b3e7a8b | 596 | |
798e1352 BP |
597 | status->bound_port = (remote->listener |
598 | ? pstream_get_bound_port(remote->listener) | |
599 | : htons(0)); | |
600 | ||
0b3e7a8b | 601 | if (list_is_empty(&remote->sessions)) { |
87fcbc60 | 602 | return false; |
0b3e7a8b AE |
603 | } |
604 | s = CONTAINER_OF(remote->sessions.next, struct ovsdb_jsonrpc_session, node); | |
605 | js = s->js; | |
0b3e7a8b AE |
606 | |
607 | status->is_connected = jsonrpc_session_is_connected(js); | |
608 | status->last_error = jsonrpc_session_get_status(js); | |
609 | ||
610 | jsonrpc_session_get_reconnect_stats(js, &rstats); | |
611 | status->state = rstats.state; | |
5eda645e AE |
612 | status->sec_since_connect = rstats.msec_since_connect == UINT_MAX |
613 | ? UINT_MAX : rstats.msec_since_connect / 1000; | |
614 | status->sec_since_disconnect = rstats.msec_since_disconnect == UINT_MAX | |
615 | ? UINT_MAX : rstats.msec_since_disconnect / 1000; | |
87fcbc60 | 616 | |
da897f41 BP |
617 | ds_init(&locks_held); |
618 | ds_init(&locks_waiting); | |
619 | ds_init(&locks_lost); | |
620 | HMAP_FOR_EACH (waiter, session_node, &s->up.waiters) { | |
621 | struct ds *string; | |
622 | ||
623 | string = (ovsdb_lock_waiter_is_owner(waiter) ? &locks_held | |
624 | : waiter->mode == OVSDB_LOCK_WAIT ? &locks_waiting | |
625 | : &locks_lost); | |
626 | if (string->length) { | |
627 | ds_put_char(string, ' '); | |
628 | } | |
629 | ds_put_cstr(string, waiter->lock_name); | |
630 | } | |
631 | status->locks_held = ds_steal_cstr(&locks_held); | |
632 | status->locks_waiting = ds_steal_cstr(&locks_waiting); | |
633 | status->locks_lost = ds_steal_cstr(&locks_lost); | |
634 | ||
a11f6164 BP |
635 | status->n_connections = list_size(&remote->sessions); |
636 | ||
87fcbc60 | 637 | return true; |
0b3e7a8b AE |
638 | } |
639 | ||
b4e8d170 BP |
640 | /* Examines 'request' to determine the database to which it relates, and then |
641 | * searches 's' to find that database: | |
642 | * | |
643 | * - If successful, returns the database and sets '*replyp' to NULL. | |
644 | * | |
645 | * - If no such database exists, returns NULL and sets '*replyp' to an | |
646 | * appropriate JSON-RPC error reply, owned by the caller. */ | |
647 | static struct ovsdb * | |
648 | ovsdb_jsonrpc_lookup_db(const struct ovsdb_jsonrpc_session *s, | |
649 | const struct jsonrpc_msg *request, | |
650 | struct jsonrpc_msg **replyp) | |
9cb53f26 BP |
651 | { |
652 | struct json_array *params; | |
9cb53f26 | 653 | struct ovsdb_error *error; |
b4e8d170 BP |
654 | const char *db_name; |
655 | struct ovsdb *db; | |
9cb53f26 BP |
656 | |
657 | params = json_array(request->params); | |
658 | if (!params->n || params->elems[0]->type != JSON_STRING) { | |
659 | error = ovsdb_syntax_error( | |
660 | request->params, NULL, | |
661 | "%s request params must begin with <db-name>", request->method); | |
662 | goto error; | |
663 | } | |
664 | ||
b4e8d170 BP |
665 | db_name = params->elems[0]->u.string; |
666 | db = shash_find_data(&s->up.server->dbs, db_name); | |
667 | if (!db) { | |
9cb53f26 BP |
668 | error = ovsdb_syntax_error( |
669 | request->params, "unknown database", | |
670 | "%s request specifies unknown database %s", | |
b4e8d170 | 671 | request->method, db_name); |
9cb53f26 BP |
672 | goto error; |
673 | } | |
674 | ||
b4e8d170 BP |
675 | *replyp = NULL; |
676 | return db; | |
9cb53f26 BP |
677 | |
678 | error: | |
508624b6 | 679 | *replyp = jsonrpc_create_error(ovsdb_error_to_json(error), request->id); |
9cb53f26 | 680 | ovsdb_error_destroy(error); |
b4e8d170 | 681 | return NULL; |
9cb53f26 BP |
682 | } |
683 | ||
da897f41 BP |
684 | static struct ovsdb_error * |
685 | ovsdb_jsonrpc_session_parse_lock_name(const struct jsonrpc_msg *request, | |
686 | const char **lock_namep) | |
687 | { | |
688 | const struct json_array *params; | |
689 | ||
690 | params = json_array(request->params); | |
691 | if (params->n != 1 || params->elems[0]->type != JSON_STRING || | |
692 | !ovsdb_parser_is_id(json_string(params->elems[0]))) { | |
693 | *lock_namep = NULL; | |
694 | return ovsdb_syntax_error(request->params, NULL, | |
695 | "%s request params must be <id>", | |
696 | request->method); | |
697 | } | |
698 | ||
699 | *lock_namep = json_string(params->elems[0]); | |
700 | return NULL; | |
701 | } | |
702 | ||
703 | static void | |
704 | ovsdb_jsonrpc_session_notify(struct ovsdb_session *session, | |
705 | const char *lock_name, | |
706 | const char *method) | |
707 | { | |
708 | struct ovsdb_jsonrpc_session *s; | |
709 | struct json *params; | |
710 | ||
711 | s = CONTAINER_OF(session, struct ovsdb_jsonrpc_session, up); | |
712 | params = json_array_create_1(json_string_create(lock_name)); | |
48f6e410 | 713 | ovsdb_jsonrpc_session_send(s, jsonrpc_create_notify(method, params)); |
da897f41 BP |
714 | } |
715 | ||
716 | static struct jsonrpc_msg * | |
717 | ovsdb_jsonrpc_session_lock(struct ovsdb_jsonrpc_session *s, | |
718 | struct jsonrpc_msg *request, | |
719 | enum ovsdb_lock_mode mode) | |
720 | { | |
721 | struct ovsdb_lock_waiter *waiter; | |
722 | struct jsonrpc_msg *reply; | |
723 | struct ovsdb_error *error; | |
724 | struct ovsdb_session *victim; | |
725 | const char *lock_name; | |
726 | struct json *result; | |
727 | ||
728 | error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name); | |
729 | if (error) { | |
730 | goto error; | |
731 | } | |
732 | ||
733 | /* Report error if this session has issued a "lock" or "steal" without a | |
734 | * matching "unlock" for this lock. */ | |
735 | waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name); | |
736 | if (waiter) { | |
737 | error = ovsdb_syntax_error( | |
738 | request->params, NULL, | |
739 | "must issue \"unlock\" before new \"%s\"", request->method); | |
740 | goto error; | |
741 | } | |
742 | ||
743 | /* Get the lock, add us as a waiter. */ | |
744 | waiter = ovsdb_server_lock(&s->remote->server->up, &s->up, lock_name, mode, | |
745 | &victim); | |
746 | if (victim) { | |
747 | ovsdb_jsonrpc_session_notify(victim, lock_name, "stolen"); | |
748 | } | |
749 | ||
750 | result = json_object_create(); | |
751 | json_object_put(result, "locked", | |
752 | json_boolean_create(ovsdb_lock_waiter_is_owner(waiter))); | |
753 | ||
754 | return jsonrpc_create_reply(result, request->id); | |
755 | ||
756 | error: | |
508624b6 | 757 | reply = jsonrpc_create_error(ovsdb_error_to_json(error), request->id); |
da897f41 BP |
758 | ovsdb_error_destroy(error); |
759 | return reply; | |
760 | } | |
761 | ||
762 | static void | |
763 | ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *s) | |
764 | { | |
765 | struct ovsdb_lock_waiter *waiter, *next; | |
766 | ||
767 | HMAP_FOR_EACH_SAFE (waiter, next, session_node, &s->up.waiters) { | |
768 | ovsdb_jsonrpc_session_unlock__(waiter); | |
769 | } | |
770 | } | |
771 | ||
772 | static void | |
773 | ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *waiter) | |
774 | { | |
775 | struct ovsdb_lock *lock = waiter->lock; | |
776 | ||
777 | if (lock) { | |
778 | struct ovsdb_session *new_owner = ovsdb_lock_waiter_remove(waiter); | |
779 | if (new_owner) { | |
780 | ovsdb_jsonrpc_session_notify(new_owner, lock->name, "locked"); | |
781 | } else { | |
782 | /* ovsdb_server_lock() might have freed 'lock'. */ | |
783 | } | |
784 | } | |
785 | ||
786 | ovsdb_lock_waiter_destroy(waiter); | |
787 | } | |
788 | ||
789 | static struct jsonrpc_msg * | |
790 | ovsdb_jsonrpc_session_unlock(struct ovsdb_jsonrpc_session *s, | |
791 | struct jsonrpc_msg *request) | |
792 | { | |
793 | struct ovsdb_lock_waiter *waiter; | |
794 | struct jsonrpc_msg *reply; | |
795 | struct ovsdb_error *error; | |
796 | const char *lock_name; | |
797 | ||
798 | error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name); | |
799 | if (error) { | |
800 | goto error; | |
801 | } | |
802 | ||
803 | /* Report error if this session has not issued a "lock" or "steal" for this | |
804 | * lock. */ | |
805 | waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name); | |
806 | if (!waiter) { | |
807 | error = ovsdb_syntax_error( | |
808 | request->params, NULL, "\"unlock\" without \"lock\" or \"steal\""); | |
809 | goto error; | |
810 | } | |
811 | ||
812 | ovsdb_jsonrpc_session_unlock__(waiter); | |
813 | ||
814 | return jsonrpc_create_reply(json_object_create(), request->id); | |
815 | ||
816 | error: | |
508624b6 | 817 | reply = jsonrpc_create_error(ovsdb_error_to_json(error), request->id); |
da897f41 BP |
818 | ovsdb_error_destroy(error); |
819 | return reply; | |
820 | } | |
821 | ||
b93d3b6c | 822 | static struct jsonrpc_msg * |
b4e8d170 | 823 | execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
b93d3b6c BP |
824 | struct jsonrpc_msg *request) |
825 | { | |
b4e8d170 | 826 | ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params); |
f85f8ebb BP |
827 | request->id = NULL; |
828 | request->params = NULL; | |
e084f690 | 829 | jsonrpc_msg_destroy(request); |
f85f8ebb BP |
830 | return NULL; |
831 | } | |
832 | ||
833 | static void | |
834 | ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s, | |
835 | struct jsonrpc_msg *request) | |
836 | { | |
837 | struct jsonrpc_msg *reply; | |
838 | ||
839 | if (!strcmp(request->method, "transact")) { | |
b4e8d170 | 840 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 841 | if (!reply) { |
b4e8d170 | 842 | reply = execute_transaction(s, db, request); |
9cb53f26 | 843 | } |
a8425c53 | 844 | } else if (!strcmp(request->method, "monitor")) { |
b4e8d170 | 845 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 846 | if (!reply) { |
508624b6 BP |
847 | reply = ovsdb_jsonrpc_monitor_create(s, db, request->params, |
848 | request->id); | |
9cb53f26 | 849 | } |
a8425c53 BP |
850 | } else if (!strcmp(request->method, "monitor_cancel")) { |
851 | reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params), | |
852 | request->id); | |
f85f8ebb | 853 | } else if (!strcmp(request->method, "get_schema")) { |
b4e8d170 | 854 | struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply); |
9cb53f26 | 855 | if (!reply) { |
b4e8d170 BP |
856 | reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema), |
857 | request->id); | |
9cb53f26 BP |
858 | } |
859 | } else if (!strcmp(request->method, "list_dbs")) { | |
b4e8d170 BP |
860 | size_t n_dbs = shash_count(&s->up.server->dbs); |
861 | struct shash_node *node; | |
862 | struct json **dbs; | |
863 | size_t i; | |
864 | ||
865 | dbs = xmalloc(n_dbs * sizeof *dbs); | |
866 | i = 0; | |
867 | SHASH_FOR_EACH (node, &s->up.server->dbs) { | |
868 | dbs[i++] = json_string_create(node->name); | |
869 | } | |
870 | reply = jsonrpc_create_reply(json_array_create(dbs, n_dbs), | |
871 | request->id); | |
da897f41 BP |
872 | } else if (!strcmp(request->method, "lock")) { |
873 | reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_WAIT); | |
874 | } else if (!strcmp(request->method, "steal")) { | |
875 | reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_STEAL); | |
876 | } else if (!strcmp(request->method, "unlock")) { | |
877 | reply = ovsdb_jsonrpc_session_unlock(s, request); | |
6c2882f9 BP |
878 | } else if (!strcmp(request->method, "echo")) { |
879 | reply = jsonrpc_create_reply(json_clone(request->params), request->id); | |
f85f8ebb BP |
880 | } else { |
881 | reply = jsonrpc_create_error(json_string_create("unknown method"), | |
882 | request->id); | |
883 | } | |
884 | ||
885 | if (reply) { | |
886 | jsonrpc_msg_destroy(request); | |
48f6e410 | 887 | ovsdb_jsonrpc_session_send(s, reply); |
f85f8ebb BP |
888 | } |
889 | } | |
890 | ||
891 | static void | |
892 | execute_cancel(struct ovsdb_jsonrpc_session *s, struct jsonrpc_msg *request) | |
893 | { | |
6e79e210 BP |
894 | if (json_array(request->params)->n == 1) { |
895 | struct ovsdb_jsonrpc_trigger *t; | |
896 | struct json *id; | |
f85f8ebb | 897 | |
6e79e210 BP |
898 | id = request->params->u.array.elems[0]; |
899 | t = ovsdb_jsonrpc_trigger_find(s, id, json_hash(id, 0)); | |
900 | if (t) { | |
901 | ovsdb_jsonrpc_trigger_complete(t); | |
902 | } | |
f85f8ebb BP |
903 | } |
904 | } | |
905 | ||
906 | static void | |
907 | ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *s, | |
908 | struct jsonrpc_msg *request) | |
909 | { | |
910 | if (!strcmp(request->method, "cancel")) { | |
911 | execute_cancel(s, request); | |
912 | } | |
913 | jsonrpc_msg_destroy(request); | |
914 | } | |
48f6e410 BP |
915 | |
916 | static void | |
917 | ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *s, | |
918 | struct jsonrpc_msg *msg) | |
919 | { | |
920 | ovsdb_jsonrpc_monitor_flush_all(s); | |
921 | jsonrpc_session_send(s->js, msg); | |
922 | } | |
b93d3b6c BP |
923 | \f |
924 | /* JSON-RPC database server triggers. | |
925 | * | |
926 | * (Every transaction is treated as a trigger even if it doesn't actually have | |
927 | * any "wait" operations.) */ | |
928 | ||
929 | struct ovsdb_jsonrpc_trigger { | |
930 | struct ovsdb_trigger trigger; | |
b93d3b6c BP |
931 | struct hmap_node hmap_node; /* In session's "triggers" hmap. */ |
932 | struct json *id; | |
933 | }; | |
934 | ||
935 | static void | |
b4e8d170 | 936 | ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
b93d3b6c BP |
937 | struct json *id, struct json *params) |
938 | { | |
939 | struct ovsdb_jsonrpc_trigger *t; | |
940 | size_t hash; | |
941 | ||
942 | /* Check for duplicate ID. */ | |
943 | hash = json_hash(id, 0); | |
944 | t = ovsdb_jsonrpc_trigger_find(s, id, hash); | |
945 | if (t) { | |
4931f33a BP |
946 | struct jsonrpc_msg *msg; |
947 | ||
948 | msg = jsonrpc_create_error(json_string_create("duplicate request ID"), | |
949 | id); | |
48f6e410 | 950 | ovsdb_jsonrpc_session_send(s, msg); |
b93d3b6c BP |
951 | json_destroy(id); |
952 | json_destroy(params); | |
953 | return; | |
954 | } | |
955 | ||
956 | /* Insert into trigger table. */ | |
957 | t = xmalloc(sizeof *t); | |
b4e8d170 | 958 | ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec()); |
b93d3b6c BP |
959 | t->id = id; |
960 | hmap_insert(&s->triggers, &t->hmap_node, hash); | |
961 | ||
962 | /* Complete early if possible. */ | |
963 | if (ovsdb_trigger_is_complete(&t->trigger)) { | |
964 | ovsdb_jsonrpc_trigger_complete(t); | |
965 | } | |
966 | } | |
967 | ||
968 | static struct ovsdb_jsonrpc_trigger * | |
969 | ovsdb_jsonrpc_trigger_find(struct ovsdb_jsonrpc_session *s, | |
970 | const struct json *id, size_t hash) | |
971 | { | |
972 | struct ovsdb_jsonrpc_trigger *t; | |
973 | ||
4e8e4213 | 974 | HMAP_FOR_EACH_WITH_HASH (t, hmap_node, hash, &s->triggers) { |
b93d3b6c BP |
975 | if (json_equal(t->id, id)) { |
976 | return t; | |
977 | } | |
978 | } | |
979 | ||
980 | return NULL; | |
981 | } | |
982 | ||
983 | static void | |
984 | ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t) | |
985 | { | |
e317253b BP |
986 | struct ovsdb_jsonrpc_session *s; |
987 | ||
988 | s = CONTAINER_OF(t->trigger.session, struct ovsdb_jsonrpc_session, up); | |
b93d3b6c | 989 | |
4931f33a | 990 | if (jsonrpc_session_is_connected(s->js)) { |
b93d3b6c BP |
991 | struct jsonrpc_msg *reply; |
992 | struct json *result; | |
993 | ||
994 | result = ovsdb_trigger_steal_result(&t->trigger); | |
995 | if (result) { | |
996 | reply = jsonrpc_create_reply(result, t->id); | |
997 | } else { | |
998 | reply = jsonrpc_create_error(json_string_create("canceled"), | |
999 | t->id); | |
1000 | } | |
48f6e410 | 1001 | ovsdb_jsonrpc_session_send(s, reply); |
b93d3b6c BP |
1002 | } |
1003 | ||
1004 | json_destroy(t->id); | |
1005 | ovsdb_trigger_destroy(&t->trigger); | |
1006 | hmap_remove(&s->triggers, &t->hmap_node); | |
1007 | free(t); | |
1008 | } | |
1009 | ||
1010 | static void | |
1011 | ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *s) | |
1012 | { | |
1013 | struct ovsdb_jsonrpc_trigger *t, *next; | |
4e8e4213 | 1014 | HMAP_FOR_EACH_SAFE (t, next, hmap_node, &s->triggers) { |
b93d3b6c BP |
1015 | ovsdb_jsonrpc_trigger_complete(t); |
1016 | } | |
1017 | } | |
1018 | ||
1019 | static void | |
1020 | ovsdb_jsonrpc_trigger_complete_done(struct ovsdb_jsonrpc_session *s) | |
1021 | { | |
e317253b | 1022 | while (!list_is_empty(&s->up.completions)) { |
b93d3b6c | 1023 | struct ovsdb_jsonrpc_trigger *t |
e317253b | 1024 | = CONTAINER_OF(s->up.completions.next, |
b93d3b6c BP |
1025 | struct ovsdb_jsonrpc_trigger, trigger.node); |
1026 | ovsdb_jsonrpc_trigger_complete(t); | |
1027 | } | |
1028 | } | |
a8425c53 | 1029 | \f |
897af587 AZ |
1030 | /* Jsonrpc front end monitor. */ |
1031 | struct ovsdb_jsonrpc_monitor { | |
a8425c53 | 1032 | struct ovsdb_jsonrpc_session *session; |
b4e8d170 | 1033 | struct ovsdb *db; |
a8425c53 | 1034 | struct hmap_node node; /* In ovsdb_jsonrpc_session's "monitors". */ |
a8425c53 | 1035 | struct json *monitor_id; |
897af587 | 1036 | struct ovsdb_monitor *dbmon; |
a8425c53 BP |
1037 | }; |
1038 | ||
2fa1df7b | 1039 | static struct ovsdb_jsonrpc_monitor * |
a8425c53 BP |
1040 | ovsdb_jsonrpc_monitor_find(struct ovsdb_jsonrpc_session *s, |
1041 | const struct json *monitor_id) | |
1042 | { | |
1043 | struct ovsdb_jsonrpc_monitor *m; | |
1044 | ||
4e8e4213 | 1045 | HMAP_FOR_EACH_WITH_HASH (m, node, json_hash(monitor_id, 0), &s->monitors) { |
a8425c53 BP |
1046 | if (json_equal(m->monitor_id, monitor_id)) { |
1047 | return m; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | return NULL; | |
1052 | } | |
1053 | ||
2fa1df7b AZ |
1054 | static bool |
1055 | parse_bool(struct ovsdb_parser *parser, const char *name, bool default_value) | |
20aa445d | 1056 | { |
2fa1df7b | 1057 | const struct json *json; |
20aa445d | 1058 | |
2fa1df7b AZ |
1059 | json = ovsdb_parser_member(parser, name, OP_BOOLEAN | OP_OPTIONAL); |
1060 | return json ? json_boolean(json) : default_value; | |
f3395ab3 AZ |
1061 | } |
1062 | ||
cab50449 | 1063 | static struct ovsdb_error * OVS_WARN_UNUSED_RESULT |
83d300f6 AZ |
1064 | ovsdb_jsonrpc_parse_monitor_request(struct ovsdb_monitor *dbmon, |
1065 | const struct ovsdb_table *table, | |
20aa445d BP |
1066 | const struct json *monitor_request, |
1067 | size_t *allocated_columns) | |
1068 | { | |
83d300f6 | 1069 | const struct ovsdb_table_schema *ts = table->schema; |
897af587 | 1070 | enum ovsdb_monitor_selection select; |
20aa445d BP |
1071 | const struct json *columns, *select_json; |
1072 | struct ovsdb_parser parser; | |
1073 | struct ovsdb_error *error; | |
1074 | ||
1075 | ovsdb_parser_init(&parser, monitor_request, "table %s", ts->name); | |
1076 | columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL); | |
1077 | select_json = ovsdb_parser_member(&parser, "select", | |
1078 | OP_OBJECT | OP_OPTIONAL); | |
1079 | error = ovsdb_parser_finish(&parser); | |
1080 | if (error) { | |
1081 | return error; | |
1082 | } | |
1083 | ||
1084 | if (select_json) { | |
1085 | select = 0; | |
1086 | ovsdb_parser_init(&parser, select_json, "table %s select", ts->name); | |
1087 | if (parse_bool(&parser, "initial", true)) { | |
1088 | select |= OJMS_INITIAL; | |
1089 | } | |
1090 | if (parse_bool(&parser, "insert", true)) { | |
1091 | select |= OJMS_INSERT; | |
1092 | } | |
1093 | if (parse_bool(&parser, "delete", true)) { | |
1094 | select |= OJMS_DELETE; | |
1095 | } | |
1096 | if (parse_bool(&parser, "modify", true)) { | |
1097 | select |= OJMS_MODIFY; | |
1098 | } | |
1099 | error = ovsdb_parser_finish(&parser); | |
1100 | if (error) { | |
1101 | return error; | |
1102 | } | |
1103 | } else { | |
1104 | select = OJMS_INITIAL | OJMS_INSERT | OJMS_DELETE | OJMS_MODIFY; | |
1105 | } | |
20aa445d | 1106 | |
ea585a0e | 1107 | ovsdb_monitor_table_add_select(dbmon, table, select); |
20aa445d BP |
1108 | if (columns) { |
1109 | size_t i; | |
1110 | ||
1111 | if (columns->type != JSON_ARRAY) { | |
1112 | return ovsdb_syntax_error(columns, NULL, | |
1113 | "array of column names expected"); | |
1114 | } | |
1115 | ||
1116 | for (i = 0; i < columns->u.array.n; i++) { | |
1117 | const struct ovsdb_column *column; | |
1118 | const char *s; | |
1119 | ||
1120 | if (columns->u.array.elems[i]->type != JSON_STRING) { | |
1121 | return ovsdb_syntax_error(columns, NULL, | |
1122 | "array of column names expected"); | |
1123 | } | |
1124 | ||
1125 | s = columns->u.array.elems[i]->u.string; | |
ea585a0e | 1126 | column = shash_find_data(&table->schema->columns, s); |
20aa445d BP |
1127 | if (!column) { |
1128 | return ovsdb_syntax_error(columns, NULL, "%s is not a valid " | |
1129 | "column name", s); | |
1130 | } | |
ea585a0e AZ |
1131 | ovsdb_monitor_add_column(dbmon, table, column, select, |
1132 | allocated_columns); | |
20aa445d BP |
1133 | } |
1134 | } else { | |
1135 | struct shash_node *node; | |
1136 | ||
1137 | SHASH_FOR_EACH (node, &ts->columns) { | |
1138 | const struct ovsdb_column *column = node->data; | |
1139 | if (column->index != OVSDB_COL_UUID) { | |
ea585a0e | 1140 | ovsdb_monitor_add_column(dbmon, table, column, select, |
897af587 | 1141 | allocated_columns); |
20aa445d BP |
1142 | } |
1143 | } | |
1144 | } | |
1145 | ||
1146 | return NULL; | |
1147 | } | |
1148 | ||
508624b6 | 1149 | static struct jsonrpc_msg * |
b4e8d170 | 1150 | ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db, |
508624b6 BP |
1151 | struct json *params, |
1152 | const struct json *request_id) | |
a8425c53 BP |
1153 | { |
1154 | struct ovsdb_jsonrpc_monitor *m = NULL; | |
1155 | struct json *monitor_id, *monitor_requests; | |
1156 | struct ovsdb_error *error = NULL; | |
1157 | struct shash_node *node; | |
1158 | struct json *json; | |
1159 | ||
9cb53f26 | 1160 | if (json_array(params)->n != 3) { |
a8425c53 BP |
1161 | error = ovsdb_syntax_error(params, NULL, "invalid parameters"); |
1162 | goto error; | |
1163 | } | |
9cb53f26 BP |
1164 | monitor_id = params->u.array.elems[1]; |
1165 | monitor_requests = params->u.array.elems[2]; | |
a8425c53 BP |
1166 | if (monitor_requests->type != JSON_OBJECT) { |
1167 | error = ovsdb_syntax_error(monitor_requests, NULL, | |
1168 | "monitor-requests must be object"); | |
1169 | goto error; | |
1170 | } | |
1171 | ||
1172 | if (ovsdb_jsonrpc_monitor_find(s, monitor_id)) { | |
1173 | error = ovsdb_syntax_error(monitor_id, NULL, "duplicate monitor ID"); | |
1174 | goto error; | |
1175 | } | |
1176 | ||
1177 | m = xzalloc(sizeof *m); | |
a8425c53 | 1178 | m->session = s; |
b4e8d170 | 1179 | m->db = db; |
2fa1df7b | 1180 | m->dbmon = ovsdb_monitor_create(db, m); |
a8425c53 BP |
1181 | hmap_insert(&s->monitors, &m->node, json_hash(monitor_id, 0)); |
1182 | m->monitor_id = json_clone(monitor_id); | |
a8425c53 BP |
1183 | |
1184 | SHASH_FOR_EACH (node, json_object(monitor_requests)) { | |
1185 | const struct ovsdb_table *table; | |
83d300f6 | 1186 | const char *column_name; |
20aa445d BP |
1187 | size_t allocated_columns; |
1188 | const struct json *mr_value; | |
1189 | size_t i; | |
a8425c53 | 1190 | |
b4e8d170 | 1191 | table = ovsdb_get_table(m->db, node->name); |
a8425c53 BP |
1192 | if (!table) { |
1193 | error = ovsdb_syntax_error(NULL, NULL, | |
1194 | "no table named %s", node->name); | |
1195 | goto error; | |
1196 | } | |
1197 | ||
83d300f6 | 1198 | ovsdb_monitor_add_table(m->dbmon, table); |
a8425c53 | 1199 | |
20aa445d BP |
1200 | /* Parse columns. */ |
1201 | mr_value = node->data; | |
1202 | allocated_columns = 0; | |
1203 | if (mr_value->type == JSON_ARRAY) { | |
1204 | const struct json_array *array = &mr_value->u.array; | |
1205 | ||
1206 | for (i = 0; i < array->n; i++) { | |
1207 | error = ovsdb_jsonrpc_parse_monitor_request( | |
83d300f6 | 1208 | m->dbmon, table, array->elems[i], &allocated_columns); |
20aa445d BP |
1209 | if (error) { |
1210 | goto error; | |
1211 | } | |
a8425c53 BP |
1212 | } |
1213 | } else { | |
20aa445d | 1214 | error = ovsdb_jsonrpc_parse_monitor_request( |
83d300f6 | 1215 | m->dbmon, table, mr_value, &allocated_columns); |
20aa445d BP |
1216 | if (error) { |
1217 | goto error; | |
a8425c53 BP |
1218 | } |
1219 | } | |
1220 | ||
83d300f6 AZ |
1221 | column_name = ovsdb_monitor_table_check_duplicates(m->dbmon, table); |
1222 | ||
1223 | if (column_name) { | |
1224 | error = ovsdb_syntax_error(mr_value, NULL, "column %s " | |
1225 | "mentioned more than once", | |
1226 | column_name); | |
1227 | goto error; | |
a8425c53 BP |
1228 | } |
1229 | } | |
1230 | ||
51df26a6 | 1231 | return jsonrpc_create_reply(ovsdb_monitor_get_initial(m->dbmon), |
508624b6 | 1232 | request_id); |
a8425c53 BP |
1233 | |
1234 | error: | |
23f37a97 | 1235 | if (m) { |
88b63308 | 1236 | ovsdb_jsonrpc_monitor_destroy(m); |
23f37a97 | 1237 | } |
a8425c53 BP |
1238 | |
1239 | json = ovsdb_error_to_json(error); | |
1240 | ovsdb_error_destroy(error); | |
508624b6 | 1241 | return jsonrpc_create_error(json, request_id); |
a8425c53 BP |
1242 | } |
1243 | ||
1244 | static struct jsonrpc_msg * | |
1245 | ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s, | |
1246 | struct json_array *params, | |
1247 | const struct json *request_id) | |
1248 | { | |
1249 | if (params->n != 1) { | |
1250 | return jsonrpc_create_error(json_string_create("invalid parameters"), | |
1251 | request_id); | |
1252 | } else { | |
1253 | struct ovsdb_jsonrpc_monitor *m; | |
1254 | ||
1255 | m = ovsdb_jsonrpc_monitor_find(s, params->elems[0]); | |
1256 | if (!m) { | |
1257 | return jsonrpc_create_error(json_string_create("unknown monitor"), | |
1258 | request_id); | |
1259 | } else { | |
88b63308 | 1260 | ovsdb_jsonrpc_monitor_destroy(m); |
a8425c53 BP |
1261 | return jsonrpc_create_reply(json_object_create(), request_id); |
1262 | } | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | static void | |
1267 | ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *s) | |
1268 | { | |
1269 | struct ovsdb_jsonrpc_monitor *m, *next; | |
1270 | ||
4e8e4213 | 1271 | HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) { |
88b63308 | 1272 | ovsdb_jsonrpc_monitor_destroy(m); |
a8425c53 BP |
1273 | } |
1274 | } | |
1275 | ||
92d5d643 AZ |
1276 | static struct json * |
1277 | ovsdb_jsonrpc_monitor_compose_table_update( | |
1278 | const struct ovsdb_jsonrpc_monitor *monitor, bool initial) | |
1279 | { | |
1280 | return ovsdb_monitor_compose_table_update(monitor->dbmon, initial); | |
1281 | } | |
1282 | ||
48f6e410 BP |
1283 | static bool |
1284 | ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *s) | |
1285 | { | |
1286 | struct ovsdb_jsonrpc_monitor *m; | |
1287 | ||
1288 | HMAP_FOR_EACH (m, node, &s->monitors) { | |
dbc1cfbb AZ |
1289 | if (ovsdb_monitor_needs_flush(m->dbmon)) { |
1290 | return true; | |
48f6e410 BP |
1291 | } |
1292 | } | |
1293 | ||
1294 | return false; | |
1295 | } | |
1296 | ||
2fa1df7b AZ |
1297 | void |
1298 | ovsdb_jsonrpc_monitor_destroy(struct ovsdb_jsonrpc_monitor *m) | |
1299 | { | |
1300 | json_destroy(m->monitor_id); | |
1301 | hmap_remove(&m->session->monitors, &m->node); | |
1302 | ovsdb_monitor_destroy(m->dbmon); | |
1303 | free(m); | |
1304 | } | |
1305 | ||
48f6e410 BP |
1306 | static void |
1307 | ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s) | |
1308 | { | |
1309 | struct ovsdb_jsonrpc_monitor *m; | |
1310 | ||
1311 | HMAP_FOR_EACH (m, node, &s->monitors) { | |
1312 | struct json *json; | |
1313 | ||
1314 | json = ovsdb_jsonrpc_monitor_compose_table_update(m, false); | |
1315 | if (json) { | |
1316 | struct jsonrpc_msg *msg; | |
1317 | struct json *params; | |
1318 | ||
1319 | params = json_array_create_2(json_clone(m->monitor_id), json); | |
1320 | msg = jsonrpc_create_notify("update", params); | |
1321 | jsonrpc_session_send(s->js, msg); | |
1322 | } | |
1323 | } | |
1324 | } |