-/* Copyright (c) 2009 Nicira Networks
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <errno.h>
+#include "bitmap.h"
+#include "column.h"
+#include "dynamic-string.h"
#include "json.h"
#include "jsonrpc.h"
+#include "ovsdb-error.h"
+#include "ovsdb-parser.h"
#include "ovsdb.h"
+#include "poll-loop.h"
+#include "reconnect.h"
+#include "row.h"
+#include "server.h"
+#include "simap.h"
#include "stream.h"
-#include "svec.h"
+#include "table.h"
#include "timeval.h"
+#include "transaction.h"
#include "trigger.h"
-
-#define THIS_MODULE VLM_ovsdb_jsonrpc_server
#include "vlog.h"
-struct ovsdb_jsonrpc_trigger {
- struct ovsdb_trigger trigger;
- struct ovsdb_jsonrpc_session *session;
- struct hmap_node hmap_node; /* Element in session's trigger table. */
- struct json *id;
-};
+VLOG_DEFINE_THIS_MODULE(ovsdb_jsonrpc_server);
+
+struct ovsdb_jsonrpc_remote;
+struct ovsdb_jsonrpc_session;
+
+/* Message rate-limiting. */
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+/* Sessions. */
+static struct ovsdb_jsonrpc_session *ovsdb_jsonrpc_session_create(
+ struct ovsdb_jsonrpc_remote *, struct jsonrpc_session *);
+static void ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *);
+static void ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *);
+static void ovsdb_jsonrpc_session_get_memory_usage_all(
+ const struct ovsdb_jsonrpc_remote *, struct simap *usage);
+static void ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *);
+static void ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *);
+static void ovsdb_jsonrpc_session_set_all_options(
+ struct ovsdb_jsonrpc_remote *, const struct ovsdb_jsonrpc_options *);
+static bool ovsdb_jsonrpc_session_get_status(
+ const struct ovsdb_jsonrpc_remote *,
+ struct ovsdb_jsonrpc_remote_status *);
+static void ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *);
+static void ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *,
+ struct jsonrpc_msg *);
+
+/* Triggers. */
+static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *,
+ struct ovsdb *,
+ struct json *id, struct json *params);
static struct ovsdb_jsonrpc_trigger *ovsdb_jsonrpc_trigger_find(
struct ovsdb_jsonrpc_session *, const struct json *id, size_t hash);
static void ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *);
+static void ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_trigger_complete_done(
+ struct ovsdb_jsonrpc_session *);
-struct ovsdb_jsonrpc_session {
+/* Monitors. */
+static struct json *ovsdb_jsonrpc_monitor_create(
+ struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params);
+static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cancel(
+ struct ovsdb_jsonrpc_session *,
+ struct json_array *params,
+ const struct json *request_id);
+static void ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *);
+static bool ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *);
+\f
+/* JSON-RPC database server. */
+
+struct ovsdb_jsonrpc_server {
+ struct ovsdb_server up;
+ unsigned int n_sessions, max_sessions;
+ struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */
+};
+
+/* A configured remote. This is either a passive stream listener plus a list
+ * of the currently connected sessions, or a list of exactly one active
+ * session. */
+struct ovsdb_jsonrpc_remote {
struct ovsdb_jsonrpc_server *server;
- struct list node; /* Element in server's sessions list. */
- struct jsonrpc *rpc;
- struct hmap triggers;
- struct list completions; /* Completed triggers. */
+ struct pstream *listener; /* Listener, if passive. */
+ struct list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */
+ uint8_t dscp;
};
-static void ovsdb_jsonrpc_session_open(struct ovsdb_jsonrpc_server *,
- struct stream *);
-static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *);
-static void ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *,
- struct jsonrpc_msg *);
-static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
- struct jsonrpc_msg *);
+static struct ovsdb_jsonrpc_remote *ovsdb_jsonrpc_server_add_remote(
+ struct ovsdb_jsonrpc_server *, const char *name,
+ const struct ovsdb_jsonrpc_options *options
+);
+static void ovsdb_jsonrpc_server_del_remote(struct shash_node *);
-struct ovsdb_jsonrpc_server {
- struct ovsdb *db;
+/* Creates and returns a new server to provide JSON-RPC access to an OVSDB.
+ *
+ * The caller must call ovsdb_jsonrpc_server_add_db() for each database to
+ * which 'server' should provide access. */
+struct ovsdb_jsonrpc_server *
+ovsdb_jsonrpc_server_create(void)
+{
+ struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
+ ovsdb_server_init(&server->up);
+ server->max_sessions = 64;
+ shash_init(&server->remotes);
+ return server;
+}
- struct list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */
- unsigned int n_sessions, max_sessions;
- unsigned int max_triggers;
+/* Adds 'db' to the set of databases served out by 'svr'. Returns true if
+ * successful, false if 'db''s name is the same as some database already in
+ * 'server'. */
+bool
+ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *svr, struct ovsdb *db)
+{
+ /* The OVSDB protocol doesn't have a way to notify a client that a
+ * database has been added. If some client tried to use the database
+ * that we're adding and failed, then forcing it to reconnect seems like
+ * a reasonable way to make it try again.
+ *
+ * If this is too big of a hammer in practice, we could be more selective,
+ * e.g. disconnect only connections that actually tried to use a database
+ * with 'db''s name. */
+ ovsdb_jsonrpc_server_reconnect(svr);
- struct pstream **listeners;
- size_t n_listeners, allocated_listeners;
-};
+ return ovsdb_server_add_db(&svr->up, db);
+}
-static void ovsdb_jsonrpc_server_listen(struct ovsdb_jsonrpc_server *,
- struct pstream *);
+/* Removes 'db' from the set of databases served out by 'svr'. Returns
+ * true if successful, false if there is no database associated with 'db'. */
+bool
+ovsdb_jsonrpc_server_remove_db(struct ovsdb_jsonrpc_server *svr,
+ struct ovsdb *db)
+{
+ /* There might be pointers to 'db' from 'svr', such as monitors or
+ * outstanding transactions. Disconnect all JSON-RPC connections to avoid
+ * accesses to freed memory.
+ *
+ * If this is too big of a hammer in practice, we could be more selective,
+ * e.g. disconnect only connections that actually reference 'db'. */
+ ovsdb_jsonrpc_server_reconnect(svr);
+
+ return ovsdb_server_remove_db(&svr->up, db);
+}
-int
-ovsdb_jsonrpc_server_create(struct ovsdb *db, const struct svec *active,
- const struct svec *passive,
- struct ovsdb_jsonrpc_server **serverp)
+void
+ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr)
{
- struct ovsdb_jsonrpc_server *server;
- const char *name;
- int retval = 0;
- size_t i;
+ struct shash_node *node, *next;
- server = xzalloc(sizeof *server);
- server->db = db;
- server->max_sessions = 64;
- server->max_triggers = 64;
- list_init(&server->sessions);
+ SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
+ ovsdb_jsonrpc_server_del_remote(node);
+ }
+ shash_destroy(&svr->remotes);
+ ovsdb_server_destroy(&svr->up);
+ free(svr);
+}
- SVEC_FOR_EACH (i, name, active) {
- struct stream *stream;
- int error;
+struct ovsdb_jsonrpc_options *
+ovsdb_jsonrpc_default_options(const char *target)
+{
+ struct ovsdb_jsonrpc_options *options = xzalloc(sizeof *options);
+ options->max_backoff = RECONNECT_DEFAULT_MAX_BACKOFF;
+ options->probe_interval = (stream_or_pstream_needs_probes(target)
+ ? RECONNECT_DEFAULT_PROBE_INTERVAL
+ : 0);
+ return options;
+}
- error = stream_open(name, &stream);
- if (!error) {
- ovsdb_jsonrpc_session_open(server, stream);
- } else {
- ovs_error(error, "%s: connection failed", name);
- retval = error;
+/* Sets 'svr''s current set of remotes to the names in 'new_remotes', with
+ * options in the struct ovsdb_jsonrpc_options supplied as the data values.
+ *
+ * A remote is an active or passive stream connection method, e.g. "pssl:" or
+ * "tcp:1.2.3.4". */
+void
+ovsdb_jsonrpc_server_set_remotes(struct ovsdb_jsonrpc_server *svr,
+ const struct shash *new_remotes)
+{
+ struct shash_node *node, *next;
+
+ SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
+ if (!shash_find(new_remotes, node->name)) {
+ VLOG_INFO("%s: remote deconfigured", node->name);
+ ovsdb_jsonrpc_server_del_remote(node);
}
}
+ SHASH_FOR_EACH (node, new_remotes) {
+ const struct ovsdb_jsonrpc_options *options = node->data;
+ struct ovsdb_jsonrpc_remote *remote;
- SVEC_FOR_EACH (i, name, passive) {
- struct pstream *pstream;
- int error;
-
- error = pstream_open(name, &pstream);
- if (!error) {
- ovsdb_jsonrpc_server_listen(server, pstream);
- } else {
- ovs_error(error, "failed to listen on %s", name);
- retval = error;
+ remote = shash_find_data(&svr->remotes, node->name);
+ if (!remote) {
+ remote = ovsdb_jsonrpc_server_add_remote(svr, node->name, options);
+ if (!remote) {
+ continue;
+ }
}
+
+ ovsdb_jsonrpc_session_set_all_options(remote, options);
+ }
+}
+
+static struct ovsdb_jsonrpc_remote *
+ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *svr,
+ const char *name,
+ const struct ovsdb_jsonrpc_options *options)
+{
+ struct ovsdb_jsonrpc_remote *remote;
+ struct pstream *listener;
+ int error;
+
+ error = jsonrpc_pstream_open(name, &listener, options->dscp);
+ if (error && error != EAFNOSUPPORT) {
+ VLOG_ERR_RL(&rl, "%s: listen failed: %s", name, ovs_strerror(error));
+ return NULL;
+ }
+
+ remote = xmalloc(sizeof *remote);
+ remote->server = svr;
+ remote->listener = listener;
+ list_init(&remote->sessions);
+ remote->dscp = options->dscp;
+ shash_add(&svr->remotes, name, remote);
+
+ if (!listener) {
+ ovsdb_jsonrpc_session_create(remote, jsonrpc_session_open(name, true));
}
+ return remote;
+}
+
+static void
+ovsdb_jsonrpc_server_del_remote(struct shash_node *node)
+{
+ struct ovsdb_jsonrpc_remote *remote = node->data;
+
+ ovsdb_jsonrpc_session_close_all(remote);
+ pstream_close(remote->listener);
+ shash_delete(&remote->server->remotes, node);
+ free(remote);
+}
+
+/* Stores status information for the remote named 'target', which should have
+ * been configured on 'svr' with a call to ovsdb_jsonrpc_server_set_remotes(),
+ * into '*status'. On success returns true, on failure (if 'svr' doesn't have
+ * a remote named 'target' or if that remote is an inbound remote that has no
+ * active connections) returns false. On failure, 'status' will be zeroed.
+ */
+bool
+ovsdb_jsonrpc_server_get_remote_status(
+ const struct ovsdb_jsonrpc_server *svr, const char *target,
+ struct ovsdb_jsonrpc_remote_status *status)
+{
+ const struct ovsdb_jsonrpc_remote *remote;
+
+ memset(status, 0, sizeof *status);
+
+ remote = shash_find_data(&svr->remotes, target);
+ return remote && ovsdb_jsonrpc_session_get_status(remote, status);
+}
+
+void
+ovsdb_jsonrpc_server_free_remote_status(
+ struct ovsdb_jsonrpc_remote_status *status)
+{
+ free(status->locks_held);
+ free(status->locks_waiting);
+ free(status->locks_lost);
+}
+
+/* Forces all of the JSON-RPC sessions managed by 'svr' to disconnect and
+ * reconnect. */
+void
+ovsdb_jsonrpc_server_reconnect(struct ovsdb_jsonrpc_server *svr)
+{
+ struct shash_node *node;
+
+ SHASH_FOR_EACH (node, &svr->remotes) {
+ struct ovsdb_jsonrpc_remote *remote = node->data;
- *serverp = server;
- return retval;
+ ovsdb_jsonrpc_session_reconnect_all(remote);
+ }
}
void
ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr)
{
- struct ovsdb_jsonrpc_session *s, *next;
- size_t i;
+ struct shash_node *node;
- /* Accept new connections. */
- for (i = 0; i < svr->n_listeners && svr->n_sessions < svr->max_sessions;) {
- struct pstream *listener = svr->listeners[i];
- struct stream *stream;
- int error;
+ SHASH_FOR_EACH (node, &svr->remotes) {
+ struct ovsdb_jsonrpc_remote *remote = node->data;
- error = pstream_accept(listener, &stream);
- if (!error) {
- ovsdb_jsonrpc_session_open(svr, stream);
- } else if (error == EAGAIN) {
- i++;
- } else if (error) {
- VLOG_WARN("%s: accept failed: %s",
- pstream_get_name(listener), strerror(error));
- pstream_close(listener);
- svr->listeners[i] = svr->listeners[--svr->n_listeners];
+ if (remote->listener && svr->n_sessions < svr->max_sessions) {
+ struct stream *stream;
+ int error;
+
+ error = pstream_accept(remote->listener, &stream);
+ if (!error) {
+ struct jsonrpc_session *js;
+ js = jsonrpc_session_open_unreliably(jsonrpc_open(stream),
+ remote->dscp);
+ ovsdb_jsonrpc_session_create(remote, js);
+ } else if (error != EAGAIN) {
+ VLOG_WARN_RL(&rl, "%s: accept failed: %s",
+ pstream_get_name(remote->listener),
+ ovs_strerror(error));
+ }
}
+
+ ovsdb_jsonrpc_session_run_all(remote);
}
+}
- /* Handle each session. */
- LIST_FOR_EACH_SAFE (s, next, struct ovsdb_jsonrpc_session, node,
- &svr->sessions) {
- struct jsonrpc_msg *msg;
- int error;
+void
+ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr)
+{
+ struct shash_node *node;
- jsonrpc_run(s->rpc);
+ SHASH_FOR_EACH (node, &svr->remotes) {
+ struct ovsdb_jsonrpc_remote *remote = node->data;
- while (!list_is_empty(&s->completions)) {
- struct ovsdb_jsonrpc_trigger *t
- = CONTAINER_OF(s->completions.next,
- struct ovsdb_jsonrpc_trigger, trigger.node);
- ovsdb_jsonrpc_trigger_complete(t);
+ if (remote->listener && svr->n_sessions < svr->max_sessions) {
+ pstream_wait(remote->listener);
}
- if (!jsonrpc_get_backlog(s->rpc) && !jsonrpc_recv(s->rpc, &msg)) {
+ ovsdb_jsonrpc_session_wait_all(remote);
+ }
+}
+
+/* Adds some memory usage statistics for 'svr' into 'usage', for use with
+ * memory_report(). */
+void
+ovsdb_jsonrpc_server_get_memory_usage(const struct ovsdb_jsonrpc_server *svr,
+ struct simap *usage)
+{
+ struct shash_node *node;
+
+ simap_increase(usage, "sessions", svr->n_sessions);
+ SHASH_FOR_EACH (node, &svr->remotes) {
+ struct ovsdb_jsonrpc_remote *remote = node->data;
+
+ ovsdb_jsonrpc_session_get_memory_usage_all(remote, usage);
+ }
+}
+\f
+/* JSON-RPC database server session. */
+
+struct ovsdb_jsonrpc_session {
+ struct list node; /* Element in remote's sessions list. */
+ struct ovsdb_session up;
+ struct ovsdb_jsonrpc_remote *remote;
+
+ /* Triggers. */
+ struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */
+
+ /* Monitors. */
+ struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"s. */
+
+ /* Network connectivity. */
+ struct jsonrpc_session *js; /* JSON-RPC session. */
+ unsigned int js_seqno; /* Last jsonrpc_session_get_seqno() value. */
+};
+
+static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *);
+static int ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_session_get_memory_usage(
+ const struct ovsdb_jsonrpc_session *, struct simap *usage);
+static void ovsdb_jsonrpc_session_set_options(
+ struct ovsdb_jsonrpc_session *, const struct ovsdb_jsonrpc_options *);
+static void ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *,
+ struct jsonrpc_msg *);
+static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
+ struct jsonrpc_msg *);
+
+static struct ovsdb_jsonrpc_session *
+ovsdb_jsonrpc_session_create(struct ovsdb_jsonrpc_remote *remote,
+ struct jsonrpc_session *js)
+{
+ struct ovsdb_jsonrpc_session *s;
+
+ s = xzalloc(sizeof *s);
+ ovsdb_session_init(&s->up, &remote->server->up);
+ s->remote = remote;
+ list_push_back(&remote->sessions, &s->node);
+ hmap_init(&s->triggers);
+ hmap_init(&s->monitors);
+ s->js = js;
+ s->js_seqno = jsonrpc_session_get_seqno(js);
+
+ remote->server->n_sessions++;
+
+ return s;
+}
+
+static void
+ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *s)
+{
+ ovsdb_jsonrpc_monitor_remove_all(s);
+ ovsdb_jsonrpc_session_unlock_all(s);
+ ovsdb_jsonrpc_trigger_complete_all(s);
+
+ hmap_destroy(&s->monitors);
+ hmap_destroy(&s->triggers);
+
+ jsonrpc_session_close(s->js);
+ list_remove(&s->node);
+ s->remote->server->n_sessions--;
+ ovsdb_session_destroy(&s->up);
+ free(s);
+}
+
+static int
+ovsdb_jsonrpc_session_run(struct ovsdb_jsonrpc_session *s)
+{
+ jsonrpc_session_run(s->js);
+ if (s->js_seqno != jsonrpc_session_get_seqno(s->js)) {
+ s->js_seqno = jsonrpc_session_get_seqno(s->js);
+ ovsdb_jsonrpc_trigger_complete_all(s);
+ ovsdb_jsonrpc_monitor_remove_all(s);
+ ovsdb_jsonrpc_session_unlock_all(s);
+ }
+
+ ovsdb_jsonrpc_trigger_complete_done(s);
+
+ if (!jsonrpc_session_get_backlog(s->js)) {
+ struct jsonrpc_msg *msg;
+
+ ovsdb_jsonrpc_monitor_flush_all(s);
+
+ msg = jsonrpc_session_recv(s->js);
+ if (msg) {
if (msg->type == JSONRPC_REQUEST) {
ovsdb_jsonrpc_session_got_request(s, msg);
} else if (msg->type == JSONRPC_NOTIFY) {
ovsdb_jsonrpc_session_got_notify(s, msg);
} else {
VLOG_WARN("%s: received unexpected %s message",
- jsonrpc_get_name(s->rpc),
+ jsonrpc_session_get_name(s->js),
jsonrpc_msg_type_to_string(msg->type));
- jsonrpc_error(s->rpc, EPROTO);
+ jsonrpc_session_force_reconnect(s->js);
jsonrpc_msg_destroy(msg);
}
}
-
- error = jsonrpc_get_status(s->rpc);
- if (error) {
- ovsdb_jsonrpc_session_close(s);
- }
}
+ return jsonrpc_session_is_alive(s->js) ? 0 : ETIMEDOUT;
}
-void
-ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr)
+static void
+ovsdb_jsonrpc_session_set_options(struct ovsdb_jsonrpc_session *session,
+ const struct ovsdb_jsonrpc_options *options)
{
- struct ovsdb_jsonrpc_session *s;
+ jsonrpc_session_set_max_backoff(session->js, options->max_backoff);
+ jsonrpc_session_set_probe_interval(session->js, options->probe_interval);
+ jsonrpc_session_set_dscp(session->js, options->dscp);
+}
- if (svr->n_sessions < svr->max_sessions) {
- size_t i;
+static void
+ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *remote)
+{
+ struct ovsdb_jsonrpc_session *s, *next;
- for (i = 0; i < svr->n_listeners; i++) {
- pstream_wait(svr->listeners[i]);
+ LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
+ int error = ovsdb_jsonrpc_session_run(s);
+ if (error) {
+ ovsdb_jsonrpc_session_close(s);
}
}
+}
- LIST_FOR_EACH (s, struct ovsdb_jsonrpc_session, node, &svr->sessions) {
- jsonrpc_wait(s->rpc);
- if (!jsonrpc_get_backlog(s->rpc)) {
- jsonrpc_recv_wait(s->rpc);
+static void
+ovsdb_jsonrpc_session_wait(struct ovsdb_jsonrpc_session *s)
+{
+ jsonrpc_session_wait(s->js);
+ if (!jsonrpc_session_get_backlog(s->js)) {
+ if (ovsdb_jsonrpc_monitor_needs_flush(s)) {
+ poll_immediate_wake();
+ } else {
+ jsonrpc_session_recv_wait(s->js);
}
}
}
static void
-ovsdb_jsonrpc_server_listen(struct ovsdb_jsonrpc_server *svr,
- struct pstream *pstream)
+ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_remote *remote)
{
- if (svr->n_listeners >= svr->allocated_listeners) {
- svr->listeners = x2nrealloc(svr->listeners, &svr->allocated_listeners,
- sizeof *svr->listeners);
+ struct ovsdb_jsonrpc_session *s;
+
+ LIST_FOR_EACH (s, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_wait(s);
}
- svr->listeners[svr->n_listeners++] = pstream;
}
-static struct ovsdb_jsonrpc_trigger *
-ovsdb_jsonrpc_trigger_find(struct ovsdb_jsonrpc_session *s,
- const struct json *id, size_t hash)
+static void
+ovsdb_jsonrpc_session_get_memory_usage(const struct ovsdb_jsonrpc_session *s,
+ struct simap *usage)
{
- struct ovsdb_jsonrpc_trigger *t;
+ simap_increase(usage, "triggers", hmap_count(&s->triggers));
+ simap_increase(usage, "monitors", hmap_count(&s->monitors));
+ simap_increase(usage, "backlog", jsonrpc_session_get_backlog(s->js));
+}
- HMAP_FOR_EACH_WITH_HASH (t, struct ovsdb_jsonrpc_trigger, hmap_node, hash,
- &s->triggers) {
- if (json_equal(t->id, id)) {
- return t;
- }
- }
+static void
+ovsdb_jsonrpc_session_get_memory_usage_all(
+ const struct ovsdb_jsonrpc_remote *remote,
+ struct simap *usage)
+{
+ struct ovsdb_jsonrpc_session *s;
- return NULL;
+ LIST_FOR_EACH (s, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_get_memory_usage(s, usage);
+ }
}
static void
-ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t)
+ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *remote)
{
- struct ovsdb_jsonrpc_session *s = t->session;
+ struct ovsdb_jsonrpc_session *s, *next;
- if (!jsonrpc_get_status(s->rpc)) {
- struct jsonrpc_msg *reply;
- struct json *result;
+ LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_close(s);
+ }
+}
- result = ovsdb_trigger_steal_result(&t->trigger);
- if (result) {
- reply = jsonrpc_create_reply(result, t->id);
- } else {
- reply = jsonrpc_create_error(json_string_create("canceled"),
- t->id);
+/* Forces all of the JSON-RPC sessions managed by 'remote' to disconnect and
+ * reconnect. */
+static void
+ovsdb_jsonrpc_session_reconnect_all(struct ovsdb_jsonrpc_remote *remote)
+{
+ struct ovsdb_jsonrpc_session *s, *next;
+
+ LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
+ jsonrpc_session_force_reconnect(s->js);
+ if (!jsonrpc_session_is_alive(s->js)) {
+ ovsdb_jsonrpc_session_close(s);
}
- jsonrpc_send(s->rpc, reply);
}
-
- json_destroy(t->id);
- ovsdb_trigger_destroy(&t->trigger);
- hmap_remove(&s->triggers, &t->hmap_node);
- free(t);
}
+/* Sets the options for all of the JSON-RPC sessions managed by 'remote' to
+ * 'options'. */
static void
-ovsdb_jsonrpc_session_open(struct ovsdb_jsonrpc_server *svr,
- struct stream *stream)
+ovsdb_jsonrpc_session_set_all_options(
+ struct ovsdb_jsonrpc_remote *remote,
+ const struct ovsdb_jsonrpc_options *options)
{
struct ovsdb_jsonrpc_session *s;
- s = xzalloc(sizeof *s);
- s->server = svr;
- list_push_back(&svr->sessions, &s->node);
- s->rpc = jsonrpc_open(stream);
- hmap_init(&s->triggers);
- list_init(&s->completions);
+ if (remote->listener) {
+ int error;
+
+ error = pstream_set_dscp(remote->listener, options->dscp);
+ if (error) {
+ VLOG_ERR("%s: set_dscp failed %s",
+ pstream_get_name(remote->listener), ovs_strerror(error));
+ } else {
+ remote->dscp = options->dscp;
+ }
+ /*
+ * XXX race window between setting dscp to listening socket
+ * and accepting socket. Accepted socket may have old dscp value.
+ * Ignore this race window for now.
+ */
+ }
+ LIST_FOR_EACH (s, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_set_options(s, options);
+ }
}
-static void
-ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *s)
+static bool
+ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_remote *remote,
+ struct ovsdb_jsonrpc_remote_status *status)
{
- struct ovsdb_jsonrpc_trigger *t, *next;
+ const struct ovsdb_jsonrpc_session *s;
+ const struct jsonrpc_session *js;
+ struct ovsdb_lock_waiter *waiter;
+ struct reconnect_stats rstats;
+ struct ds locks_held, locks_waiting, locks_lost;
- jsonrpc_error(s->rpc, EOF);
- HMAP_FOR_EACH_SAFE (t, next, struct ovsdb_jsonrpc_trigger, hmap_node,
- &s->triggers) {
- ovsdb_jsonrpc_trigger_complete(t);
+ status->bound_port = (remote->listener
+ ? pstream_get_bound_port(remote->listener)
+ : htons(0));
+
+ if (list_is_empty(&remote->sessions)) {
+ return false;
}
+ s = CONTAINER_OF(remote->sessions.next, struct ovsdb_jsonrpc_session, node);
+ js = s->js;
- jsonrpc_close(s->rpc);
+ status->is_connected = jsonrpc_session_is_connected(js);
+ status->last_error = jsonrpc_session_get_status(js);
- list_remove(&s->node);
- s->server->n_sessions--;
-}
+ jsonrpc_session_get_reconnect_stats(js, &rstats);
+ status->state = rstats.state;
+ status->sec_since_connect = rstats.msec_since_connect == UINT_MAX
+ ? UINT_MAX : rstats.msec_since_connect / 1000;
+ status->sec_since_disconnect = rstats.msec_since_disconnect == UINT_MAX
+ ? UINT_MAX : rstats.msec_since_disconnect / 1000;
-static struct jsonrpc_msg *
-execute_transaction(struct ovsdb_jsonrpc_session *s,
- struct jsonrpc_msg *request)
-{
- struct ovsdb_jsonrpc_trigger *t;
- size_t hash;
+ ds_init(&locks_held);
+ ds_init(&locks_waiting);
+ ds_init(&locks_lost);
+ HMAP_FOR_EACH (waiter, session_node, &s->up.waiters) {
+ struct ds *string;
- /* Check for duplicate ID. */
- hash = json_hash(request->id, 0);
- t = ovsdb_jsonrpc_trigger_find(s, request->id, hash);
- if (t) {
- return jsonrpc_create_error(
- json_string_create("duplicate request ID"), request->id);
+ string = (ovsdb_lock_waiter_is_owner(waiter) ? &locks_held
+ : waiter->mode == OVSDB_LOCK_WAIT ? &locks_waiting
+ : &locks_lost);
+ if (string->length) {
+ ds_put_char(string, ' ');
+ }
+ ds_put_cstr(string, waiter->lock_name);
}
+ status->locks_held = ds_steal_cstr(&locks_held);
+ status->locks_waiting = ds_steal_cstr(&locks_waiting);
+ status->locks_lost = ds_steal_cstr(&locks_lost);
- /* Insert into trigger table. */
- t = xmalloc(sizeof *t);
- ovsdb_trigger_init(s->server->db,
- &t->trigger, request->params, &s->completions,
- time_msec());
- t->session = s;
- t->id = request->id;
- hmap_insert(&s->triggers, &t->hmap_node, hash);
+ status->n_connections = list_size(&remote->sessions);
- request->id = NULL;
- request->params = NULL;
+ return true;
+}
- /* Complete early if possible. */
- if (ovsdb_trigger_is_complete(&t->trigger)) {
- ovsdb_jsonrpc_trigger_complete(t);
+/* Examines 'request' to determine the database to which it relates, and then
+ * searches 's' to find that database:
+ *
+ * - If successful, returns the database and sets '*replyp' to NULL.
+ *
+ * - If no such database exists, returns NULL and sets '*replyp' to an
+ * appropriate JSON-RPC error reply, owned by the caller. */
+static struct ovsdb *
+ovsdb_jsonrpc_lookup_db(const struct ovsdb_jsonrpc_session *s,
+ const struct jsonrpc_msg *request,
+ struct jsonrpc_msg **replyp)
+{
+ struct json_array *params;
+ struct ovsdb_error *error;
+ const char *db_name;
+ struct ovsdb *db;
+
+ params = json_array(request->params);
+ if (!params->n || params->elems[0]->type != JSON_STRING) {
+ error = ovsdb_syntax_error(
+ request->params, NULL,
+ "%s request params must begin with <db-name>", request->method);
+ goto error;
+ }
+
+ db_name = params->elems[0]->u.string;
+ db = shash_find_data(&s->up.server->dbs, db_name);
+ if (!db) {
+ error = ovsdb_syntax_error(
+ request->params, "unknown database",
+ "%s request specifies unknown database %s",
+ request->method, db_name);
+ goto error;
}
+ *replyp = NULL;
+ return db;
+
+error:
+ *replyp = jsonrpc_create_reply(ovsdb_error_to_json(error), request->id);
+ ovsdb_error_destroy(error);
return NULL;
}
-static void
-ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s,
- struct jsonrpc_msg *request)
+static struct ovsdb_error *
+ovsdb_jsonrpc_session_parse_lock_name(const struct jsonrpc_msg *request,
+ const char **lock_namep)
{
- struct jsonrpc_msg *reply;
+ const struct json_array *params;
- if (!strcmp(request->method, "transact")) {
- reply = execute_transaction(s, request);
- } else if (!strcmp(request->method, "get_schema")) {
- reply = jsonrpc_create_reply(
- ovsdb_schema_to_json(s->server->db->schema), request->id);
- } else {
- reply = jsonrpc_create_error(json_string_create("unknown method"),
- request->id);
+ params = json_array(request->params);
+ if (params->n != 1 || params->elems[0]->type != JSON_STRING ||
+ !ovsdb_parser_is_id(json_string(params->elems[0]))) {
+ *lock_namep = NULL;
+ return ovsdb_syntax_error(request->params, NULL,
+ "%s request params must be <id>",
+ request->method);
}
- if (reply) {
- jsonrpc_msg_destroy(request);
- jsonrpc_send(s->rpc, reply);
- }
+ *lock_namep = json_string(params->elems[0]);
+ return NULL;
}
static void
-execute_cancel(struct ovsdb_jsonrpc_session *s, struct jsonrpc_msg *request)
+ovsdb_jsonrpc_session_notify(struct ovsdb_session *session,
+ const char *lock_name,
+ const char *method)
{
- size_t hash = json_hash(request->id, 0);
- struct ovsdb_jsonrpc_trigger *t;
+ struct ovsdb_jsonrpc_session *s;
+ struct json *params;
- t = ovsdb_jsonrpc_trigger_find(s, request->params, hash);
- if (t) {
- ovsdb_jsonrpc_trigger_complete(t);
+ s = CONTAINER_OF(session, struct ovsdb_jsonrpc_session, up);
+ params = json_array_create_1(json_string_create(lock_name));
+ ovsdb_jsonrpc_session_send(s, jsonrpc_create_notify(method, params));
+}
+
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_session_lock(struct ovsdb_jsonrpc_session *s,
+ struct jsonrpc_msg *request,
+ enum ovsdb_lock_mode mode)
+{
+ struct ovsdb_lock_waiter *waiter;
+ struct jsonrpc_msg *reply;
+ struct ovsdb_error *error;
+ struct ovsdb_session *victim;
+ const char *lock_name;
+ struct json *result;
+
+ error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name);
+ if (error) {
+ goto error;
+ }
+
+ /* Report error if this session has issued a "lock" or "steal" without a
+ * matching "unlock" for this lock. */
+ waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name);
+ if (waiter) {
+ error = ovsdb_syntax_error(
+ request->params, NULL,
+ "must issue \"unlock\" before new \"%s\"", request->method);
+ goto error;
+ }
+
+ /* Get the lock, add us as a waiter. */
+ waiter = ovsdb_server_lock(&s->remote->server->up, &s->up, lock_name, mode,
+ &victim);
+ if (victim) {
+ ovsdb_jsonrpc_session_notify(victim, lock_name, "stolen");
+ }
+
+ result = json_object_create();
+ json_object_put(result, "locked",
+ json_boolean_create(ovsdb_lock_waiter_is_owner(waiter)));
+
+ return jsonrpc_create_reply(result, request->id);
+
+error:
+ reply = jsonrpc_create_reply(ovsdb_error_to_json(error), request->id);
+ ovsdb_error_destroy(error);
+ return reply;
+}
+
+static void
+ovsdb_jsonrpc_session_unlock_all(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_lock_waiter *waiter, *next;
+
+ HMAP_FOR_EACH_SAFE (waiter, next, session_node, &s->up.waiters) {
+ ovsdb_jsonrpc_session_unlock__(waiter);
+ }
+}
+
+static void
+ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *waiter)
+{
+ struct ovsdb_lock *lock = waiter->lock;
+
+ if (lock) {
+ struct ovsdb_session *new_owner = ovsdb_lock_waiter_remove(waiter);
+ if (new_owner) {
+ ovsdb_jsonrpc_session_notify(new_owner, lock->name, "locked");
+ } else {
+ /* ovsdb_server_lock() might have freed 'lock'. */
+ }
+ }
+
+ ovsdb_lock_waiter_destroy(waiter);
+}
+
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_session_unlock(struct ovsdb_jsonrpc_session *s,
+ struct jsonrpc_msg *request)
+{
+ struct ovsdb_lock_waiter *waiter;
+ struct jsonrpc_msg *reply;
+ struct ovsdb_error *error;
+ const char *lock_name;
+
+ error = ovsdb_jsonrpc_session_parse_lock_name(request, &lock_name);
+ if (error) {
+ goto error;
+ }
+
+ /* Report error if this session has not issued a "lock" or "steal" for this
+ * lock. */
+ waiter = ovsdb_session_get_lock_waiter(&s->up, lock_name);
+ if (!waiter) {
+ error = ovsdb_syntax_error(
+ request->params, NULL, "\"unlock\" without \"lock\" or \"steal\"");
+ goto error;
+ }
+
+ ovsdb_jsonrpc_session_unlock__(waiter);
+
+ return jsonrpc_create_reply(json_object_create(), request->id);
+
+error:
+ reply = jsonrpc_create_reply(ovsdb_error_to_json(error), request->id);
+ ovsdb_error_destroy(error);
+ return reply;
+}
+
+static struct jsonrpc_msg *
+execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
+ struct jsonrpc_msg *request)
+{
+ ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params);
+ request->id = NULL;
+ request->params = NULL;
+ jsonrpc_msg_destroy(request);
+ return NULL;
+}
+
+static void
+ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s,
+ struct jsonrpc_msg *request)
+{
+ struct jsonrpc_msg *reply;
+
+ if (!strcmp(request->method, "transact")) {
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
+ if (!reply) {
+ reply = execute_transaction(s, db, request);
+ }
+ } else if (!strcmp(request->method, "monitor")) {
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
+ if (!reply) {
+ reply = jsonrpc_create_reply(
+ ovsdb_jsonrpc_monitor_create(s, db, request->params),
+ request->id);
+ }
+ } else if (!strcmp(request->method, "monitor_cancel")) {
+ reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params),
+ request->id);
+ } else if (!strcmp(request->method, "get_schema")) {
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
+ if (!reply) {
+ reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema),
+ request->id);
+ }
+ } else if (!strcmp(request->method, "list_dbs")) {
+ size_t n_dbs = shash_count(&s->up.server->dbs);
+ struct shash_node *node;
+ struct json **dbs;
+ size_t i;
+
+ dbs = xmalloc(n_dbs * sizeof *dbs);
+ i = 0;
+ SHASH_FOR_EACH (node, &s->up.server->dbs) {
+ dbs[i++] = json_string_create(node->name);
+ }
+ reply = jsonrpc_create_reply(json_array_create(dbs, n_dbs),
+ request->id);
+ } else if (!strcmp(request->method, "lock")) {
+ reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_WAIT);
+ } else if (!strcmp(request->method, "steal")) {
+ reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_STEAL);
+ } else if (!strcmp(request->method, "unlock")) {
+ reply = ovsdb_jsonrpc_session_unlock(s, request);
+ } else if (!strcmp(request->method, "echo")) {
+ reply = jsonrpc_create_reply(json_clone(request->params), request->id);
+ } else {
+ reply = jsonrpc_create_error(json_string_create("unknown method"),
+ request->id);
+ }
+
+ if (reply) {
+ jsonrpc_msg_destroy(request);
+ ovsdb_jsonrpc_session_send(s, reply);
+ }
+}
+
+static void
+execute_cancel(struct ovsdb_jsonrpc_session *s, struct jsonrpc_msg *request)
+{
+ if (json_array(request->params)->n == 1) {
+ struct ovsdb_jsonrpc_trigger *t;
+ struct json *id;
+
+ id = request->params->u.array.elems[0];
+ t = ovsdb_jsonrpc_trigger_find(s, id, json_hash(id, 0));
+ if (t) {
+ ovsdb_jsonrpc_trigger_complete(t);
+ }
}
}
}
jsonrpc_msg_destroy(request);
}
+
+static void
+ovsdb_jsonrpc_session_send(struct ovsdb_jsonrpc_session *s,
+ struct jsonrpc_msg *msg)
+{
+ ovsdb_jsonrpc_monitor_flush_all(s);
+ jsonrpc_session_send(s->js, msg);
+}
+\f
+/* JSON-RPC database server triggers.
+ *
+ * (Every transaction is treated as a trigger even if it doesn't actually have
+ * any "wait" operations.) */
+
+struct ovsdb_jsonrpc_trigger {
+ struct ovsdb_trigger trigger;
+ struct hmap_node hmap_node; /* In session's "triggers" hmap. */
+ struct json *id;
+};
+
+static void
+ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
+ struct json *id, struct json *params)
+{
+ struct ovsdb_jsonrpc_trigger *t;
+ size_t hash;
+
+ /* Check for duplicate ID. */
+ hash = json_hash(id, 0);
+ t = ovsdb_jsonrpc_trigger_find(s, id, hash);
+ if (t) {
+ struct jsonrpc_msg *msg;
+
+ msg = jsonrpc_create_error(json_string_create("duplicate request ID"),
+ id);
+ ovsdb_jsonrpc_session_send(s, msg);
+ json_destroy(id);
+ json_destroy(params);
+ return;
+ }
+
+ /* Insert into trigger table. */
+ t = xmalloc(sizeof *t);
+ ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec());
+ t->id = id;
+ hmap_insert(&s->triggers, &t->hmap_node, hash);
+
+ /* Complete early if possible. */
+ if (ovsdb_trigger_is_complete(&t->trigger)) {
+ ovsdb_jsonrpc_trigger_complete(t);
+ }
+}
+
+static struct ovsdb_jsonrpc_trigger *
+ovsdb_jsonrpc_trigger_find(struct ovsdb_jsonrpc_session *s,
+ const struct json *id, size_t hash)
+{
+ struct ovsdb_jsonrpc_trigger *t;
+
+ HMAP_FOR_EACH_WITH_HASH (t, hmap_node, hash, &s->triggers) {
+ if (json_equal(t->id, id)) {
+ return t;
+ }
+ }
+
+ return NULL;
+}
+
+static void
+ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t)
+{
+ struct ovsdb_jsonrpc_session *s;
+
+ s = CONTAINER_OF(t->trigger.session, struct ovsdb_jsonrpc_session, up);
+
+ if (jsonrpc_session_is_connected(s->js)) {
+ struct jsonrpc_msg *reply;
+ struct json *result;
+
+ result = ovsdb_trigger_steal_result(&t->trigger);
+ if (result) {
+ reply = jsonrpc_create_reply(result, t->id);
+ } else {
+ reply = jsonrpc_create_error(json_string_create("canceled"),
+ t->id);
+ }
+ ovsdb_jsonrpc_session_send(s, reply);
+ }
+
+ json_destroy(t->id);
+ ovsdb_trigger_destroy(&t->trigger);
+ hmap_remove(&s->triggers, &t->hmap_node);
+ free(t);
+}
+
+static void
+ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_jsonrpc_trigger *t, *next;
+ HMAP_FOR_EACH_SAFE (t, next, hmap_node, &s->triggers) {
+ ovsdb_jsonrpc_trigger_complete(t);
+ }
+}
+
+static void
+ovsdb_jsonrpc_trigger_complete_done(struct ovsdb_jsonrpc_session *s)
+{
+ while (!list_is_empty(&s->up.completions)) {
+ struct ovsdb_jsonrpc_trigger *t
+ = CONTAINER_OF(s->up.completions.next,
+ struct ovsdb_jsonrpc_trigger, trigger.node);
+ ovsdb_jsonrpc_trigger_complete(t);
+ }
+}
+\f
+/* JSON-RPC database table monitors. */
+
+enum ovsdb_jsonrpc_monitor_selection {
+ OJMS_INITIAL = 1 << 0, /* All rows when monitor is created. */
+ OJMS_INSERT = 1 << 1, /* New rows. */
+ OJMS_DELETE = 1 << 2, /* Deleted rows. */
+ OJMS_MODIFY = 1 << 3 /* Modified rows. */
+};
+
+/* A particular column being monitored. */
+struct ovsdb_jsonrpc_monitor_column {
+ const struct ovsdb_column *column;
+ enum ovsdb_jsonrpc_monitor_selection select;
+};
+
+/* A row that has changed in a monitored table. */
+struct ovsdb_jsonrpc_monitor_row {
+ struct hmap_node hmap_node; /* In ovsdb_jsonrpc_monitor_table.changes. */
+ struct uuid uuid; /* UUID of row that changed. */
+ struct ovsdb_datum *old; /* Old data, NULL for an inserted row. */
+ struct ovsdb_datum *new; /* New data, NULL for a deleted row. */
+};
+
+/* A particular table being monitored. */
+struct ovsdb_jsonrpc_monitor_table {
+ const struct ovsdb_table *table;
+
+ /* This is the union (bitwise-OR) of the 'select' values in all of the
+ * members of 'columns' below. */
+ enum ovsdb_jsonrpc_monitor_selection select;
+
+ /* Columns being monitored. */
+ struct ovsdb_jsonrpc_monitor_column *columns;
+ size_t n_columns;
+
+ /* Contains 'struct ovsdb_jsonrpc_monitor_row's for rows that have been
+ * updated but not yet flushed to the jsonrpc connection. */
+ struct hmap changes;
+};
+
+/* A collection of tables being monitored. */
+struct ovsdb_jsonrpc_monitor {
+ struct ovsdb_replica replica;
+ struct ovsdb_jsonrpc_session *session;
+ struct ovsdb *db;
+ struct hmap_node node; /* In ovsdb_jsonrpc_session's "monitors". */
+
+ struct json *monitor_id;
+ struct shash tables; /* Holds "struct ovsdb_jsonrpc_monitor_table"s. */
+};
+
+static const struct ovsdb_replica_class ovsdb_jsonrpc_replica_class;
+
+struct ovsdb_jsonrpc_monitor *ovsdb_jsonrpc_monitor_find(
+ struct ovsdb_jsonrpc_session *, const struct json *monitor_id);
+static void ovsdb_jsonrpc_monitor_destroy(struct ovsdb_replica *);
+static struct json *ovsdb_jsonrpc_monitor_get_initial(
+ const struct ovsdb_jsonrpc_monitor *);
+
+static bool
+parse_bool(struct ovsdb_parser *parser, const char *name, bool default_value)
+{
+ const struct json *json;
+
+ json = ovsdb_parser_member(parser, name, OP_BOOLEAN | OP_OPTIONAL);
+ return json ? json_boolean(json) : default_value;
+}
+
+struct ovsdb_jsonrpc_monitor *
+ovsdb_jsonrpc_monitor_find(struct ovsdb_jsonrpc_session *s,
+ const struct json *monitor_id)
+{
+ struct ovsdb_jsonrpc_monitor *m;
+
+ HMAP_FOR_EACH_WITH_HASH (m, node, json_hash(monitor_id, 0), &s->monitors) {
+ if (json_equal(m->monitor_id, monitor_id)) {
+ return m;
+ }
+ }
+
+ return NULL;
+}
+
+static void
+ovsdb_jsonrpc_add_monitor_column(struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct ovsdb_column *column,
+ enum ovsdb_jsonrpc_monitor_selection select,
+ size_t *allocated_columns)
+{
+ struct ovsdb_jsonrpc_monitor_column *c;
+
+ if (mt->n_columns >= *allocated_columns) {
+ mt->columns = x2nrealloc(mt->columns, allocated_columns,
+ sizeof *mt->columns);
+ }
+
+ c = &mt->columns[mt->n_columns++];
+ c->column = column;
+ c->select = select;
+}
+
+static int
+compare_ovsdb_jsonrpc_monitor_column(const void *a_, const void *b_)
+{
+ const struct ovsdb_jsonrpc_monitor_column *a = a_;
+ const struct ovsdb_jsonrpc_monitor_column *b = b_;
+
+ return a->column < b->column ? -1 : a->column > b->column;
+}
+
+static struct ovsdb_error * WARN_UNUSED_RESULT
+ovsdb_jsonrpc_parse_monitor_request(struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct json *monitor_request,
+ size_t *allocated_columns)
+{
+ const struct ovsdb_table_schema *ts = mt->table->schema;
+ enum ovsdb_jsonrpc_monitor_selection select;
+ const struct json *columns, *select_json;
+ struct ovsdb_parser parser;
+ struct ovsdb_error *error;
+
+ ovsdb_parser_init(&parser, monitor_request, "table %s", ts->name);
+ columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL);
+ select_json = ovsdb_parser_member(&parser, "select",
+ OP_OBJECT | OP_OPTIONAL);
+ error = ovsdb_parser_finish(&parser);
+ if (error) {
+ return error;
+ }
+
+ if (select_json) {
+ select = 0;
+ ovsdb_parser_init(&parser, select_json, "table %s select", ts->name);
+ if (parse_bool(&parser, "initial", true)) {
+ select |= OJMS_INITIAL;
+ }
+ if (parse_bool(&parser, "insert", true)) {
+ select |= OJMS_INSERT;
+ }
+ if (parse_bool(&parser, "delete", true)) {
+ select |= OJMS_DELETE;
+ }
+ if (parse_bool(&parser, "modify", true)) {
+ select |= OJMS_MODIFY;
+ }
+ error = ovsdb_parser_finish(&parser);
+ if (error) {
+ return error;
+ }
+ } else {
+ select = OJMS_INITIAL | OJMS_INSERT | OJMS_DELETE | OJMS_MODIFY;
+ }
+ mt->select |= select;
+
+ if (columns) {
+ size_t i;
+
+ if (columns->type != JSON_ARRAY) {
+ return ovsdb_syntax_error(columns, NULL,
+ "array of column names expected");
+ }
+
+ for (i = 0; i < columns->u.array.n; i++) {
+ const struct ovsdb_column *column;
+ const char *s;
+
+ if (columns->u.array.elems[i]->type != JSON_STRING) {
+ return ovsdb_syntax_error(columns, NULL,
+ "array of column names expected");
+ }
+
+ s = columns->u.array.elems[i]->u.string;
+ column = shash_find_data(&mt->table->schema->columns, s);
+ if (!column) {
+ return ovsdb_syntax_error(columns, NULL, "%s is not a valid "
+ "column name", s);
+ }
+ ovsdb_jsonrpc_add_monitor_column(mt, column, select,
+ allocated_columns);
+ }
+ } else {
+ struct shash_node *node;
+
+ SHASH_FOR_EACH (node, &ts->columns) {
+ const struct ovsdb_column *column = node->data;
+ if (column->index != OVSDB_COL_UUID) {
+ ovsdb_jsonrpc_add_monitor_column(mt, column, select,
+ allocated_columns);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static struct json *
+ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
+ struct json *params)
+{
+ struct ovsdb_jsonrpc_monitor *m = NULL;
+ struct json *monitor_id, *monitor_requests;
+ struct ovsdb_error *error = NULL;
+ struct shash_node *node;
+ struct json *json;
+
+ if (json_array(params)->n != 3) {
+ error = ovsdb_syntax_error(params, NULL, "invalid parameters");
+ goto error;
+ }
+ monitor_id = params->u.array.elems[1];
+ monitor_requests = params->u.array.elems[2];
+ if (monitor_requests->type != JSON_OBJECT) {
+ error = ovsdb_syntax_error(monitor_requests, NULL,
+ "monitor-requests must be object");
+ goto error;
+ }
+
+ if (ovsdb_jsonrpc_monitor_find(s, monitor_id)) {
+ error = ovsdb_syntax_error(monitor_id, NULL, "duplicate monitor ID");
+ goto error;
+ }
+
+ m = xzalloc(sizeof *m);
+ ovsdb_replica_init(&m->replica, &ovsdb_jsonrpc_replica_class);
+ ovsdb_add_replica(db, &m->replica);
+ m->session = s;
+ m->db = db;
+ hmap_insert(&s->monitors, &m->node, json_hash(monitor_id, 0));
+ m->monitor_id = json_clone(monitor_id);
+ shash_init(&m->tables);
+
+ SHASH_FOR_EACH (node, json_object(monitor_requests)) {
+ const struct ovsdb_table *table;
+ struct ovsdb_jsonrpc_monitor_table *mt;
+ size_t allocated_columns;
+ const struct json *mr_value;
+ size_t i;
+
+ table = ovsdb_get_table(m->db, node->name);
+ if (!table) {
+ error = ovsdb_syntax_error(NULL, NULL,
+ "no table named %s", node->name);
+ goto error;
+ }
+
+ mt = xzalloc(sizeof *mt);
+ mt->table = table;
+ hmap_init(&mt->changes);
+ shash_add(&m->tables, table->schema->name, mt);
+
+ /* Parse columns. */
+ mr_value = node->data;
+ allocated_columns = 0;
+ if (mr_value->type == JSON_ARRAY) {
+ const struct json_array *array = &mr_value->u.array;
+
+ for (i = 0; i < array->n; i++) {
+ error = ovsdb_jsonrpc_parse_monitor_request(
+ mt, array->elems[i], &allocated_columns);
+ if (error) {
+ goto error;
+ }
+ }
+ } else {
+ error = ovsdb_jsonrpc_parse_monitor_request(
+ mt, mr_value, &allocated_columns);
+ if (error) {
+ goto error;
+ }
+ }
+
+ /* Check for duplicate columns. */
+ qsort(mt->columns, mt->n_columns, sizeof *mt->columns,
+ compare_ovsdb_jsonrpc_monitor_column);
+ for (i = 1; i < mt->n_columns; i++) {
+ if (mt->columns[i].column == mt->columns[i - 1].column) {
+ error = ovsdb_syntax_error(mr_value, NULL, "column %s "
+ "mentioned more than once",
+ mt->columns[i].column->name);
+ goto error;
+ }
+ }
+ }
+
+ return ovsdb_jsonrpc_monitor_get_initial(m);
+
+error:
+ if (m) {
+ ovsdb_remove_replica(m->db, &m->replica);
+ }
+
+ json = ovsdb_error_to_json(error);
+ ovsdb_error_destroy(error);
+ return json;
+}
+
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s,
+ struct json_array *params,
+ const struct json *request_id)
+{
+ if (params->n != 1) {
+ return jsonrpc_create_error(json_string_create("invalid parameters"),
+ request_id);
+ } else {
+ struct ovsdb_jsonrpc_monitor *m;
+
+ m = ovsdb_jsonrpc_monitor_find(s, params->elems[0]);
+ if (!m) {
+ return jsonrpc_create_error(json_string_create("unknown monitor"),
+ request_id);
+ } else {
+ ovsdb_remove_replica(m->db, &m->replica);
+ return jsonrpc_create_reply(json_object_create(), request_id);
+ }
+ }
+}
+
+static void
+ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_jsonrpc_monitor *m, *next;
+
+ HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) {
+ ovsdb_remove_replica(m->db, &m->replica);
+ }
+}
+
+static struct ovsdb_jsonrpc_monitor *
+ovsdb_jsonrpc_monitor_cast(struct ovsdb_replica *replica)
+{
+ ovs_assert(replica->class == &ovsdb_jsonrpc_replica_class);
+ return CONTAINER_OF(replica, struct ovsdb_jsonrpc_monitor, replica);
+}
+
+struct ovsdb_jsonrpc_monitor_aux {
+ const struct ovsdb_jsonrpc_monitor *monitor;
+ struct ovsdb_jsonrpc_monitor_table *mt;
+};
+
+/* Finds and returns the ovsdb_jsonrpc_monitor_row in 'mt->changes' for the
+ * given 'uuid', or NULL if there is no such row. */
+static struct ovsdb_jsonrpc_monitor_row *
+ovsdb_jsonrpc_monitor_row_find(const struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct uuid *uuid)
+{
+ struct ovsdb_jsonrpc_monitor_row *row;
+
+ HMAP_FOR_EACH_WITH_HASH (row, hmap_node, uuid_hash(uuid), &mt->changes) {
+ if (uuid_equals(uuid, &row->uuid)) {
+ return row;
+ }
+ }
+ return NULL;
+}
+
+/* Allocates an array of 'mt->n_columns' ovsdb_datums and initializes them as
+ * copies of the data in 'row' drawn from the columns represented by
+ * mt->columns[]. Returns the array.
+ *
+ * If 'row' is NULL, returns NULL. */
+static struct ovsdb_datum *
+clone_monitor_row_data(const struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct ovsdb_row *row)
+{
+ struct ovsdb_datum *data;
+ size_t i;
+
+ if (!row) {
+ return NULL;
+ }
+
+ data = xmalloc(mt->n_columns * sizeof *data);
+ for (i = 0; i < mt->n_columns; i++) {
+ const struct ovsdb_column *c = mt->columns[i].column;
+ const struct ovsdb_datum *src = &row->fields[c->index];
+ struct ovsdb_datum *dst = &data[i];
+ const struct ovsdb_type *type = &c->type;
+
+ ovsdb_datum_clone(dst, src, type);
+ }
+ return data;
+}
+
+/* Replaces the mt->n_columns ovsdb_datums in row[] by copies of the data from
+ * in 'row' drawn from the columns represented by mt->columns[]. */
+static void
+update_monitor_row_data(const struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct ovsdb_row *row,
+ struct ovsdb_datum *data)
+{
+ size_t i;
+
+ for (i = 0; i < mt->n_columns; i++) {
+ const struct ovsdb_column *c = mt->columns[i].column;
+ const struct ovsdb_datum *src = &row->fields[c->index];
+ struct ovsdb_datum *dst = &data[i];
+ const struct ovsdb_type *type = &c->type;
+
+ if (!ovsdb_datum_equals(src, dst, type)) {
+ ovsdb_datum_destroy(dst, type);
+ ovsdb_datum_clone(dst, src, type);
+ }
+ }
+}
+
+/* Frees all of the mt->n_columns ovsdb_datums in data[], using the types taken
+ * from mt->columns[], plus 'data' itself. */
+static void
+free_monitor_row_data(const struct ovsdb_jsonrpc_monitor_table *mt,
+ struct ovsdb_datum *data)
+{
+ if (data) {
+ size_t i;
+
+ for (i = 0; i < mt->n_columns; i++) {
+ const struct ovsdb_column *c = mt->columns[i].column;
+
+ ovsdb_datum_destroy(&data[i], &c->type);
+ }
+ free(data);
+ }
+}
+
+/* Frees 'row', which must have been created from 'mt'. */
+static void
+ovsdb_jsonrpc_monitor_row_destroy(const struct ovsdb_jsonrpc_monitor_table *mt,
+ struct ovsdb_jsonrpc_monitor_row *row)
+{
+ if (row) {
+ free_monitor_row_data(mt, row->old);
+ free_monitor_row_data(mt, row->new);
+ free(row);
+ }
+}
+
+static bool
+ovsdb_jsonrpc_monitor_change_cb(const struct ovsdb_row *old,
+ const struct ovsdb_row *new,
+ const unsigned long int *changed OVS_UNUSED,
+ void *aux_)
+{
+ struct ovsdb_jsonrpc_monitor_aux *aux = aux_;
+ const struct ovsdb_jsonrpc_monitor *m = aux->monitor;
+ struct ovsdb_table *table = new ? new->table : old->table;
+ const struct uuid *uuid = ovsdb_row_get_uuid(new ? new : old);
+ struct ovsdb_jsonrpc_monitor_row *change;
+ struct ovsdb_jsonrpc_monitor_table *mt;
+
+ if (!aux->mt || table != aux->mt->table) {
+ aux->mt = shash_find_data(&m->tables, table->schema->name);
+ if (!aux->mt) {
+ /* We don't care about rows in this table at all. Tell the caller
+ * to skip it. */
+ return false;
+ }
+ }
+ mt = aux->mt;
+
+ change = ovsdb_jsonrpc_monitor_row_find(mt, uuid);
+ if (!change) {
+ change = xmalloc(sizeof *change);
+ hmap_insert(&mt->changes, &change->hmap_node, uuid_hash(uuid));
+ change->uuid = *uuid;
+ change->old = clone_monitor_row_data(mt, old);
+ change->new = clone_monitor_row_data(mt, new);
+ } else {
+ if (new) {
+ update_monitor_row_data(mt, new, change->new);
+ } else {
+ free_monitor_row_data(mt, change->new);
+ change->new = NULL;
+
+ if (!change->old) {
+ /* This row was added then deleted. Forget about it. */
+ hmap_remove(&mt->changes, &change->hmap_node);
+ free(change);
+ }
+ }
+ }
+ return true;
+}
+
+/* Returns JSON for a <row-update> (as described in RFC 7047) for 'row' within
+ * 'mt', or NULL if no row update should be sent.
+ *
+ * The caller should specify 'initial' as true if the returned JSON is going to
+ * be used as part of the initial reply to a "monitor" request, false if it is
+ * going to be used as part of an "update" notification.
+ *
+ * 'changed' must be a scratch buffer for internal use that is at least
+ * bitmap_n_bytes(mt->n_columns) bytes long. */
+static struct json *
+ovsdb_jsonrpc_monitor_compose_row_update(
+ const struct ovsdb_jsonrpc_monitor_table *mt,
+ const struct ovsdb_jsonrpc_monitor_row *row,
+ bool initial, unsigned long int *changed)
+{
+ enum ovsdb_jsonrpc_monitor_selection type;
+ struct json *old_json, *new_json;
+ struct json *row_json;
+ size_t i;
+
+ type = (initial ? OJMS_INITIAL
+ : !row->old ? OJMS_INSERT
+ : !row->new ? OJMS_DELETE
+ : OJMS_MODIFY);
+ if (!(mt->select & type)) {
+ return NULL;
+ }
+
+ if (type == OJMS_MODIFY) {
+ size_t n_changes;
+
+ n_changes = 0;
+ memset(changed, 0, bitmap_n_bytes(mt->n_columns));
+ for (i = 0; i < mt->n_columns; i++) {
+ const struct ovsdb_column *c = mt->columns[i].column;
+ if (!ovsdb_datum_equals(&row->old[i], &row->new[i], &c->type)) {
+ bitmap_set1(changed, i);
+ n_changes++;
+ }
+ }
+ if (!n_changes) {
+ /* No actual changes: presumably a row changed and then
+ * changed back later. */
+ return NULL;
+ }
+ }
+
+ row_json = json_object_create();
+ old_json = new_json = NULL;
+ if (type & (OJMS_DELETE | OJMS_MODIFY)) {
+ old_json = json_object_create();
+ json_object_put(row_json, "old", old_json);
+ }
+ if (type & (OJMS_INITIAL | OJMS_INSERT | OJMS_MODIFY)) {
+ new_json = json_object_create();
+ json_object_put(row_json, "new", new_json);
+ }
+ for (i = 0; i < mt->n_columns; i++) {
+ const struct ovsdb_jsonrpc_monitor_column *c = &mt->columns[i];
+
+ if (!(type & c->select)) {
+ /* We don't care about this type of change for this
+ * particular column (but we will care about it for some
+ * other column). */
+ continue;
+ }
+
+ if ((type == OJMS_MODIFY && bitmap_is_set(changed, i))
+ || type == OJMS_DELETE) {
+ json_object_put(old_json, c->column->name,
+ ovsdb_datum_to_json(&row->old[i],
+ &c->column->type));
+ }
+ if (type & (OJMS_INITIAL | OJMS_INSERT | OJMS_MODIFY)) {
+ json_object_put(new_json, c->column->name,
+ ovsdb_datum_to_json(&row->new[i],
+ &c->column->type));
+ }
+ }
+
+ return row_json;
+}
+
+/* Constructs and returns JSON for a <table-updates> object (as described in
+ * RFC 7047) for all the outstanding changes within 'monitor', and deletes all
+ * the outstanding changes from 'monitor'. Returns NULL if no update needs to
+ * be sent.
+ *
+ * The caller should specify 'initial' as true if the returned JSON is going to
+ * be used as part of the initial reply to a "monitor" request, false if it is
+ * going to be used as part of an "update" notification. */
+static struct json *
+ovsdb_jsonrpc_monitor_compose_table_update(
+ const struct ovsdb_jsonrpc_monitor *monitor, bool initial)
+{
+ struct shash_node *node;
+ unsigned long int *changed;
+ struct json *json;
+ size_t max_columns;
+
+ max_columns = 0;
+ SHASH_FOR_EACH (node, &monitor->tables) {
+ struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+
+ max_columns = MAX(max_columns, mt->n_columns);
+ }
+ changed = xmalloc(bitmap_n_bytes(max_columns));
+
+ json = NULL;
+ SHASH_FOR_EACH (node, &monitor->tables) {
+ struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+ struct ovsdb_jsonrpc_monitor_row *row, *next;
+ struct json *table_json = NULL;
+
+ HMAP_FOR_EACH_SAFE (row, next, hmap_node, &mt->changes) {
+ struct json *row_json;
+
+ row_json = ovsdb_jsonrpc_monitor_compose_row_update(
+ mt, row, initial, changed);
+ if (row_json) {
+ char uuid[UUID_LEN + 1];
+
+ /* Create JSON object for transaction overall. */
+ if (!json) {
+ json = json_object_create();
+ }
+
+ /* Create JSON object for transaction on this table. */
+ if (!table_json) {
+ table_json = json_object_create();
+ json_object_put(json, mt->table->schema->name, table_json);
+ }
+
+ /* Add JSON row to JSON table. */
+ snprintf(uuid, sizeof uuid, UUID_FMT, UUID_ARGS(&row->uuid));
+ json_object_put(table_json, uuid, row_json);
+ }
+
+ hmap_remove(&mt->changes, &row->hmap_node);
+ ovsdb_jsonrpc_monitor_row_destroy(mt, row);
+ }
+ }
+
+ free(changed);
+
+ return json;
+}
+
+static bool
+ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_jsonrpc_monitor *m;
+
+ HMAP_FOR_EACH (m, node, &s->monitors) {
+ struct shash_node *node;
+
+ SHASH_FOR_EACH (node, &m->tables) {
+ struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+
+ if (!hmap_is_empty(&mt->changes)) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+static void
+ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_jsonrpc_monitor *m;
+
+ HMAP_FOR_EACH (m, node, &s->monitors) {
+ struct json *json;
+
+ json = ovsdb_jsonrpc_monitor_compose_table_update(m, false);
+ if (json) {
+ struct jsonrpc_msg *msg;
+ struct json *params;
+
+ params = json_array_create_2(json_clone(m->monitor_id), json);
+ msg = jsonrpc_create_notify("update", params);
+ jsonrpc_session_send(s->js, msg);
+ }
+ }
+}
+
+static void
+ovsdb_jsonrpc_monitor_init_aux(struct ovsdb_jsonrpc_monitor_aux *aux,
+ const struct ovsdb_jsonrpc_monitor *m)
+{
+ aux->monitor = m;
+ aux->mt = NULL;
+}
+
+static struct ovsdb_error *
+ovsdb_jsonrpc_monitor_commit(struct ovsdb_replica *replica,
+ const struct ovsdb_txn *txn,
+ bool durable OVS_UNUSED)
+{
+ struct ovsdb_jsonrpc_monitor *m = ovsdb_jsonrpc_monitor_cast(replica);
+ struct ovsdb_jsonrpc_monitor_aux aux;
+
+ ovsdb_jsonrpc_monitor_init_aux(&aux, m);
+ ovsdb_txn_for_each_change(txn, ovsdb_jsonrpc_monitor_change_cb, &aux);
+
+ return NULL;
+}
+
+static struct json *
+ovsdb_jsonrpc_monitor_get_initial(const struct ovsdb_jsonrpc_monitor *m)
+{
+ struct ovsdb_jsonrpc_monitor_aux aux;
+ struct shash_node *node;
+ struct json *json;
+
+ ovsdb_jsonrpc_monitor_init_aux(&aux, m);
+ SHASH_FOR_EACH (node, &m->tables) {
+ struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+
+ if (mt->select & OJMS_INITIAL) {
+ struct ovsdb_row *row;
+
+ HMAP_FOR_EACH (row, hmap_node, &mt->table->rows) {
+ ovsdb_jsonrpc_monitor_change_cb(NULL, row, NULL, &aux);
+ }
+ }
+ }
+ json = ovsdb_jsonrpc_monitor_compose_table_update(m, true);
+ return json ? json : json_object_create();
+}
+
+static void
+ovsdb_jsonrpc_monitor_destroy(struct ovsdb_replica *replica)
+{
+ struct ovsdb_jsonrpc_monitor *m = ovsdb_jsonrpc_monitor_cast(replica);
+ struct shash_node *node;
+
+ json_destroy(m->monitor_id);
+ SHASH_FOR_EACH (node, &m->tables) {
+ struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+ struct ovsdb_jsonrpc_monitor_row *row, *next;
+
+ HMAP_FOR_EACH_SAFE (row, next, hmap_node, &mt->changes) {
+ hmap_remove(&mt->changes, &row->hmap_node);
+ ovsdb_jsonrpc_monitor_row_destroy(mt, row);
+ }
+ hmap_destroy(&mt->changes);
+
+ free(mt->columns);
+ free(mt);
+ }
+ shash_destroy(&m->tables);
+ hmap_remove(&m->session->monitors, &m->node);
+ free(m);
+}
+
+static const struct ovsdb_replica_class ovsdb_jsonrpc_replica_class = {
+ ovsdb_jsonrpc_monitor_commit,
+ ovsdb_jsonrpc_monitor_destroy
+};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff