-/* Copyright (c) 2009, 2010 Nicira Networks
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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 "jsonrpc-server.h"
-#include <assert.h>
#include <errno.h>
+#include "bitmap.h"
#include "column.h"
+#include "dynamic-string.h"
+#include "monitor.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 "table.h"
#include "timeval.h"
#include "transaction.h"
#include "trigger.h"
+#include "openvswitch/vlog.h"
-#define THIS_MODULE VLM_ovsdb_jsonrpc_server
-#include "vlog.h"
+VLOG_DEFINE_THIS_MODULE(ovsdb_jsonrpc_server);
struct ovsdb_jsonrpc_remote;
struct ovsdb_jsonrpc_session;
+/* Set false to defeature monitor2, causing jsonrpc to respond to monitor2
+ * method with an error. */
+static bool monitor2_enable__ = true;
+
/* Message rate-limiting. */
-struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+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_active_session_get_status(
+ const struct ovsdb_jsonrpc_remote *,
+ struct ovsdb_jsonrpc_remote_status *);
+static void ovsdb_jsonrpc_session_get_status(
+ const struct ovsdb_jsonrpc_session *,
+ 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);
struct ovsdb_jsonrpc_session *);
/* Monitors. */
-static struct json *ovsdb_jsonrpc_monitor_create(
- struct ovsdb_jsonrpc_session *, struct json *params);
+static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_create(
+ struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params,
+ enum ovsdb_monitor_version, const struct json *request_id);
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 *);
+static struct json *ovsdb_jsonrpc_monitor_compose_update(
+ struct ovsdb_jsonrpc_monitor *monitor, bool initial);
+
\f
/* JSON-RPC database server. */
struct ovsdb_jsonrpc_server {
- struct ovsdb *db;
- unsigned int n_sessions, max_sessions;
+ struct ovsdb_server up;
+ unsigned int n_sessions;
struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */
};
struct ovsdb_jsonrpc_remote {
struct ovsdb_jsonrpc_server *server;
struct pstream *listener; /* Listener, if passive. */
- struct list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */
+ struct ovs_list sessions; /* List of "struct ovsdb_jsonrpc_session"s. */
+ uint8_t dscp;
};
-static void ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *,
- const char *name);
+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 *);
+/* 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(struct ovsdb *db)
+ovsdb_jsonrpc_server_create(void)
{
struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
- server->db = db;
- server->max_sessions = 64;
+ ovsdb_server_init(&server->up);
shash_init(&server->remotes);
return server;
}
+/* 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);
+
+ return ovsdb_server_add_db(&svr->up, db);
+}
+
+/* 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);
+}
+
void
ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr)
{
ovsdb_jsonrpc_server_del_remote(node);
}
shash_destroy(&svr->remotes);
+ ovsdb_server_destroy(&svr->up);
free(svr);
}
-/* Sets 'svr''s current set of remotes to the names in 'new_remotes'. The data
- * values in 'new_remotes' are ignored.
+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;
+}
+
+/* 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". */
struct shash_node *node, *next;
SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
- if (!shash_find(new_remotes, node->name)) {
+ struct ovsdb_jsonrpc_remote *remote = node->data;
+ struct ovsdb_jsonrpc_options *options
+ = shash_find_data(new_remotes, node->name);
+
+ if (!options) {
+ VLOG_INFO("%s: remote deconfigured", node->name);
ovsdb_jsonrpc_server_del_remote(node);
- }
+ } else if (options->dscp != remote->dscp) {
+ ovsdb_jsonrpc_server_del_remote(node);
+ }
}
SHASH_FOR_EACH (node, new_remotes) {
- if (!shash_find(&svr->remotes, node->name)) {
- ovsdb_jsonrpc_server_add_remote(svr, node->name);
+ const struct ovsdb_jsonrpc_options *options = node->data;
+ struct ovsdb_jsonrpc_remote *remote;
+
+ 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 void
+static struct ovsdb_jsonrpc_remote *
ovsdb_jsonrpc_server_add_remote(struct ovsdb_jsonrpc_server *svr,
- const char *name)
+ const char *name,
+ const struct ovsdb_jsonrpc_options *options)
{
struct ovsdb_jsonrpc_remote *remote;
struct pstream *listener;
int error;
- error = pstream_open(name, &listener);
+ error = jsonrpc_pstream_open(name, &listener, options->dscp);
if (error && error != EAFNOSUPPORT) {
- VLOG_ERR_RL(&rl, "%s: listen failed: %s", name, strerror(error));
- return;
+ 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));
+ ovsdb_jsonrpc_session_create(remote, jsonrpc_session_open(name, true));
}
+ return remote;
}
static void
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 outbound 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);
+
+ if (!remote) {
+ return false;
+ }
+
+ if (remote->listener) {
+ status->bound_port = pstream_get_bound_port(remote->listener);
+ status->is_connected = !list_is_empty(&remote->sessions);
+ status->n_connections = list_size(&remote->sessions);
+ return true;
+ }
+
+ return ovsdb_jsonrpc_active_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;
+
+ ovsdb_jsonrpc_session_reconnect_all(remote);
+ }
+}
+
void
ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr)
{
SHASH_FOR_EACH (node, &svr->remotes) {
struct ovsdb_jsonrpc_remote *remote = node->data;
- if (remote->listener && svr->n_sessions < svr->max_sessions) {
+ if (remote->listener) {
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));
+ 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),
- strerror(error));
+ ovs_strerror(error));
}
}
SHASH_FOR_EACH (node, &svr->remotes) {
struct ovsdb_jsonrpc_remote *remote = node->data;
- if (remote->listener && svr->n_sessions < svr->max_sessions) {
+ if (remote->listener) {
pstream_wait(remote->listener);
}
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 ovs_list node; /* Element in remote's sessions list. */
+ struct ovsdb_session up;
struct ovsdb_jsonrpc_remote *remote;
- struct list node; /* Element in remote's sessions list. */
/* Triggers. */
struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */
- struct list completions; /* Completed triggers. */
/* Monitors. */
struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"s. */
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_got_request(struct ovsdb_jsonrpc_session *,
struct jsonrpc_msg *);
static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
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);
- list_init(&s->completions);
s->js = js;
s->js_seqno = jsonrpc_session_get_seqno(js);
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);
}
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 = jsonrpc_session_recv(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);
return jsonrpc_session_is_alive(s->js) ? 0 : ETIMEDOUT;
}
+static void
+ovsdb_jsonrpc_session_set_options(struct ovsdb_jsonrpc_session *session,
+ const struct ovsdb_jsonrpc_options *options)
+{
+ 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);
+}
+
static void
ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_remote *remote)
{
struct ovsdb_jsonrpc_session *s, *next;
- LIST_FOR_EACH_SAFE (s, next, struct ovsdb_jsonrpc_session, node,
- &remote->sessions) {
+ LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
int error = ovsdb_jsonrpc_session_run(s);
if (error) {
ovsdb_jsonrpc_session_close(s);
{
jsonrpc_session_wait(s->js);
if (!jsonrpc_session_get_backlog(s->js)) {
- jsonrpc_session_recv_wait(s->js);
+ if (ovsdb_jsonrpc_monitor_needs_flush(s)) {
+ poll_immediate_wake();
+ } else {
+ jsonrpc_session_recv_wait(s->js);
+ }
}
}
{
struct ovsdb_jsonrpc_session *s;
- LIST_FOR_EACH (s, struct ovsdb_jsonrpc_session, node, &remote->sessions) {
+ LIST_FOR_EACH (s, node, &remote->sessions) {
ovsdb_jsonrpc_session_wait(s);
}
}
+static void
+ovsdb_jsonrpc_session_get_memory_usage(const struct ovsdb_jsonrpc_session *s,
+ struct simap *usage)
+{
+ simap_increase(usage, "triggers", hmap_count(&s->triggers));
+ simap_increase(usage, "backlog", jsonrpc_session_get_backlog(s->js));
+}
+
+static void
+ovsdb_jsonrpc_session_get_memory_usage_all(
+ const struct ovsdb_jsonrpc_remote *remote,
+ struct simap *usage)
+{
+ struct ovsdb_jsonrpc_session *s;
+
+ LIST_FOR_EACH (s, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_get_memory_usage(s, usage);
+ }
+}
+
static void
ovsdb_jsonrpc_session_close_all(struct ovsdb_jsonrpc_remote *remote)
{
struct ovsdb_jsonrpc_session *s, *next;
- LIST_FOR_EACH_SAFE (s, next, struct ovsdb_jsonrpc_session, node,
- &remote->sessions) {
+ LIST_FOR_EACH_SAFE (s, next, node, &remote->sessions) {
ovsdb_jsonrpc_session_close(s);
}
}
-static const char *
-get_db_name(const struct ovsdb_jsonrpc_session *s)
+/* 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);
+ }
+ }
+}
+
+/* Sets the options for all of the JSON-RPC sessions managed by 'remote' to
+ * 'options'.
+ *
+ * (The dscp value can't be changed directly; the caller must instead close and
+ * re-open the session.) */
+static void
+ovsdb_jsonrpc_session_set_all_options(
+ struct ovsdb_jsonrpc_remote *remote,
+ const struct ovsdb_jsonrpc_options *options)
{
- return s->remote->server->db->schema->name;
+ struct ovsdb_jsonrpc_session *s;
+
+ LIST_FOR_EACH (s, node, &remote->sessions) {
+ ovsdb_jsonrpc_session_set_options(s, options);
+ }
}
-static struct jsonrpc_msg *
-ovsdb_jsonrpc_check_db_name(const struct ovsdb_jsonrpc_session *s,
- const struct jsonrpc_msg *request)
+/* Sets the 'status' of for the 'remote' with an outgoing connection. */
+static bool
+ovsdb_jsonrpc_active_session_get_status(
+ const struct ovsdb_jsonrpc_remote *remote,
+ struct ovsdb_jsonrpc_remote_status *status)
+{
+ const struct ovs_list *sessions = &remote->sessions;
+ const struct ovsdb_jsonrpc_session *s;
+
+ if (list_is_empty(sessions)) {
+ return false;
+ }
+
+ ovs_assert(list_is_singleton(sessions));
+ s = CONTAINER_OF(list_front(sessions), struct ovsdb_jsonrpc_session, node);
+ ovsdb_jsonrpc_session_get_status(s, status);
+ status->n_connections = 1;
+
+ return true;
+}
+
+static void
+ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_session *session,
+ struct ovsdb_jsonrpc_remote_status *status)
+{
+ const struct ovsdb_jsonrpc_session *s = session;
+ const struct jsonrpc_session *js;
+ struct ovsdb_lock_waiter *waiter;
+ struct reconnect_stats rstats;
+ struct ds locks_held, locks_waiting, locks_lost;
+
+ js = s->js;
+
+ status->is_connected = jsonrpc_session_is_connected(js);
+ status->last_error = jsonrpc_session_get_status(js);
+
+ 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;
+
+ ds_init(&locks_held);
+ ds_init(&locks_waiting);
+ ds_init(&locks_lost);
+ HMAP_FOR_EACH (waiter, session_node, &s->up.waiters) {
+ struct ds *string;
+
+ 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);
+}
+
+/* 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;
- const char *want_db_name;
- const char *have_db_name;
struct ovsdb_error *error;
- struct jsonrpc_msg *reply;
+ const char *db_name;
+ struct ovsdb *db;
params = json_array(request->params);
if (!params->n || params->elems[0]->type != JSON_STRING) {
goto error;
}
- want_db_name = params->elems[0]->u.string;
- have_db_name = get_db_name(s);
- if (strcmp(want_db_name, have_db_name)) {
+ 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, want_db_name);
+ request->method, db_name);
goto error;
}
+ *replyp = NULL;
+ return db;
+
+error:
+ *replyp = jsonrpc_create_error(ovsdb_error_to_json(error), request->id);
+ ovsdb_error_destroy(error);
+ return NULL;
+}
+
+static struct ovsdb_error *
+ovsdb_jsonrpc_session_parse_lock_name(const struct jsonrpc_msg *request,
+ const char **lock_namep)
+{
+ const struct json_array *params;
+
+ 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);
+ }
+
+ *lock_namep = json_string(params->elems[0]);
return NULL;
+}
+
+static void
+ovsdb_jsonrpc_session_notify(struct ovsdb_session *session,
+ const char *lock_name,
+ const char *method)
+{
+ struct ovsdb_jsonrpc_session *s;
+ struct json *params;
+
+ 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_error(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);
+ reply = jsonrpc_create_error(ovsdb_error_to_json(error), request->id);
ovsdb_error_destroy(error);
return reply;
}
static struct jsonrpc_msg *
-execute_transaction(struct ovsdb_jsonrpc_session *s,
+execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
struct jsonrpc_msg *request)
{
- ovsdb_jsonrpc_trigger_create(s, request->id, request->params);
+ ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params);
request->id = NULL;
request->params = NULL;
jsonrpc_msg_destroy(request);
struct jsonrpc_msg *reply;
if (!strcmp(request->method, "transact")) {
- reply = ovsdb_jsonrpc_check_db_name(s, request);
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
if (!reply) {
- reply = execute_transaction(s, request);
+ reply = execute_transaction(s, db, request);
}
- } else if (!strcmp(request->method, "monitor")) {
- reply = ovsdb_jsonrpc_check_db_name(s, request);
+ } else if (!strcmp(request->method, "monitor") ||
+ (monitor2_enable__ && !strcmp(request->method, "monitor2"))) {
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
if (!reply) {
- reply = jsonrpc_create_reply(
- ovsdb_jsonrpc_monitor_create(s, request->params), request->id);
+ int l = strlen(request->method) - strlen("monitor");
+ enum ovsdb_monitor_version version = l ? OVSDB_MONITOR_V2
+ : OVSDB_MONITOR_V1;
+ reply = ovsdb_jsonrpc_monitor_create(s, db, request->params,
+ version, 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")) {
- reply = ovsdb_jsonrpc_check_db_name(s, request);
+ struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
if (!reply) {
- reply = jsonrpc_create_reply(
- ovsdb_schema_to_json(s->remote->server->db->schema),
- request->id);
+ reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema),
+ request->id);
}
} else if (!strcmp(request->method, "list_dbs")) {
- reply = jsonrpc_create_reply(
- json_array_create_1(json_string_create(get_db_name(s))),
- request->id);
+ 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 {
if (reply) {
jsonrpc_msg_destroy(request);
- jsonrpc_session_send(s->js, reply);
+ ovsdb_jsonrpc_session_send(s, reply);
}
}
}
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.
*
struct ovsdb_jsonrpc_trigger {
struct ovsdb_trigger trigger;
- struct ovsdb_jsonrpc_session *session;
struct hmap_node hmap_node; /* In session's "triggers" hmap. */
struct json *id;
};
static void
-ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s,
+ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
struct json *id, struct json *params)
{
struct ovsdb_jsonrpc_trigger *t;
msg = jsonrpc_create_error(json_string_create("duplicate request ID"),
id);
- jsonrpc_session_send(s->js, msg);
+ 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->remote->server->db,
- &t->trigger, params, &s->completions,
- time_msec());
- t->session = s;
+ ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec());
t->id = id;
hmap_insert(&s->triggers, &t->hmap_node, hash);
{
struct ovsdb_jsonrpc_trigger *t;
- HMAP_FOR_EACH_WITH_HASH (t, struct ovsdb_jsonrpc_trigger, hmap_node, hash,
- &s->triggers) {
+ HMAP_FOR_EACH_WITH_HASH (t, hmap_node, hash, &s->triggers) {
if (json_equal(t->id, id)) {
return t;
}
static void
ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t)
{
- struct ovsdb_jsonrpc_session *s = t->session;
+ 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;
reply = jsonrpc_create_error(json_string_create("canceled"),
t->id);
}
- jsonrpc_session_send(s->js, reply);
+ ovsdb_jsonrpc_session_send(s, reply);
}
json_destroy(t->id);
ovsdb_jsonrpc_trigger_complete_all(struct ovsdb_jsonrpc_session *s)
{
struct ovsdb_jsonrpc_trigger *t, *next;
- HMAP_FOR_EACH_SAFE (t, next, struct ovsdb_jsonrpc_trigger, hmap_node,
- &s->triggers) {
+ 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->completions)) {
+ while (!list_is_empty(&s->up.completions)) {
struct ovsdb_jsonrpc_trigger *t
- = CONTAINER_OF(s->completions.next,
+ = 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. */
-};
-
-struct ovsdb_jsonrpc_monitor_table {
- const struct ovsdb_table *table;
- enum ovsdb_jsonrpc_monitor_selection select;
- struct ovsdb_column_set columns;
-};
-
+/* Jsonrpc front end monitor. */
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. */
+ struct ovsdb_monitor *dbmon;
+ uint64_t unflushed; /* The first transaction that has not been
+ flushed to the jsonrpc remote client. */
+ enum ovsdb_monitor_version version;
};
-static const struct ovsdb_replica_class ovsdb_jsonrpc_replica_class;
+static 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;
+ }
+ }
-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 *);
+ return NULL;
+}
static bool
parse_bool(struct ovsdb_parser *parser, const char *name, bool default_value)
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)
+static struct ovsdb_error * OVS_WARN_UNUSED_RESULT
+ovsdb_jsonrpc_parse_monitor_request(struct ovsdb_monitor *dbmon,
+ const struct ovsdb_table *table,
+ const struct json *monitor_request,
+ size_t *allocated_columns)
{
- struct ovsdb_jsonrpc_monitor *m;
+ const struct ovsdb_table_schema *ts = table->schema;
+ enum ovsdb_monitor_selection select;
+ const struct json *columns, *select_json;
+ struct ovsdb_parser parser;
+ struct ovsdb_error *error;
- HMAP_FOR_EACH_WITH_HASH (m, struct ovsdb_jsonrpc_monitor, node,
- json_hash(monitor_id, 0), &s->monitors) {
- if (json_equal(m->monitor_id, monitor_id)) {
- return m;
+ 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;
+ }
+
+ ovsdb_monitor_table_add_select(dbmon, table, 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(&table->schema->columns, s);
+ if (!column) {
+ return ovsdb_syntax_error(columns, NULL, "%s is not a valid "
+ "column name", s);
+ }
+ ovsdb_monitor_add_column(dbmon, table, 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_monitor_add_column(dbmon, table, column, select,
+ allocated_columns);
+ }
}
}
return NULL;
}
-static struct json *
-ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
- struct json *params)
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
+ struct json *params,
+ enum ovsdb_monitor_version version,
+ const struct json *request_id)
{
struct ovsdb_jsonrpc_monitor *m = NULL;
+ struct ovsdb_monitor *dbmon = NULL;
struct json *monitor_id, *monitor_requests;
struct ovsdb_error *error = NULL;
struct shash_node *node;
}
m = xzalloc(sizeof *m);
- ovsdb_replica_init(&m->replica, &ovsdb_jsonrpc_replica_class);
- ovsdb_add_replica(s->remote->server->db, &m->replica);
m->session = s;
+ m->db = db;
+ m->dbmon = ovsdb_monitor_create(db, m);
+ m->unflushed = 0;
+ m->version = version;
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;
- const struct json *columns_json, *select_json;
- struct ovsdb_parser parser;
+ const char *column_name;
+ size_t allocated_columns;
+ const struct json *mr_value;
+ size_t i;
- table = ovsdb_get_table(s->remote->server->db, node->name);
+ 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;
- mt->select = OJMS_INITIAL | OJMS_INSERT | OJMS_DELETE | OJMS_MODIFY;
- ovsdb_column_set_init(&mt->columns);
- shash_add(&m->tables, table->schema->name, mt);
-
- ovsdb_parser_init(&parser, node->data, "table %s", node->name);
- columns_json = 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) {
- goto error;
- }
+ ovsdb_monitor_add_table(m->dbmon, table);
- if (columns_json) {
- error = ovsdb_column_set_from_json(columns_json, table,
- &mt->columns);
- if (error) {
- goto error;
- }
- } else {
- struct shash_node *node;
+ /* Parse columns. */
+ mr_value = node->data;
+ allocated_columns = 0;
+ if (mr_value->type == JSON_ARRAY) {
+ const struct json_array *array = &mr_value->u.array;
- SHASH_FOR_EACH (node, &table->schema->columns) {
- const struct ovsdb_column *column = node->data;
- if (column->index != OVSDB_COL_UUID) {
- ovsdb_column_set_add(&mt->columns, column);
+ for (i = 0; i < array->n; i++) {
+ error = ovsdb_jsonrpc_parse_monitor_request(
+ m->dbmon, table, array->elems[i], &allocated_columns);
+ if (error) {
+ goto error;
}
}
- }
-
- if (select_json) {
- mt->select = 0;
- ovsdb_parser_init(&parser, select_json, "table %s select",
- table->schema->name);
- if (parse_bool(&parser, "initial", true)) {
- mt->select |= OJMS_INITIAL;
- }
- if (parse_bool(&parser, "insert", true)) {
- mt->select |= OJMS_INSERT;
- }
- if (parse_bool(&parser, "delete", true)) {
- mt->select |= OJMS_DELETE;
- }
- if (parse_bool(&parser, "modify", true)) {
- mt->select |= OJMS_MODIFY;
- }
- error = ovsdb_parser_finish(&parser);
+ } else {
+ error = ovsdb_jsonrpc_parse_monitor_request(
+ m->dbmon, table, mr_value, &allocated_columns);
if (error) {
goto error;
}
}
+
+ column_name = ovsdb_monitor_table_check_duplicates(m->dbmon, table);
+
+ if (column_name) {
+ error = ovsdb_syntax_error(mr_value, NULL, "column %s "
+ "mentioned more than once",
+ column_name);
+ goto error;
+ }
}
- return ovsdb_jsonrpc_monitor_get_initial(m);
+ dbmon = ovsdb_monitor_add(m->dbmon);
+ if (dbmon != m->dbmon) {
+ /* Found an exisiting dbmon, reuse the current one. */
+ ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed);
+ ovsdb_monitor_add_jsonrpc_monitor(dbmon, m);
+ m->dbmon = dbmon;
+ }
+
+ ovsdb_monitor_get_initial(m->dbmon);
+ json = ovsdb_jsonrpc_monitor_compose_update(m, true);
+ json = json ? json : json_object_create();
+ return jsonrpc_create_reply(json, request_id);
error:
if (m) {
- ovsdb_remove_replica(s->remote->server->db, &m->replica);
+ ovsdb_jsonrpc_monitor_destroy(m);
}
json = ovsdb_error_to_json(error);
ovsdb_error_destroy(error);
- return json;
+ return jsonrpc_create_error(json, request_id);
}
static struct jsonrpc_msg *
return jsonrpc_create_error(json_string_create("unknown monitor"),
request_id);
} else {
- ovsdb_remove_replica(s->remote->server->db, &m->replica);
+ ovsdb_jsonrpc_monitor_destroy(m);
return jsonrpc_create_reply(json_object_create(), request_id);
}
}
{
struct ovsdb_jsonrpc_monitor *m, *next;
- HMAP_FOR_EACH_SAFE (m, next,
- struct ovsdb_jsonrpc_monitor, node, &s->monitors) {
- ovsdb_remove_replica(s->remote->server->db, &m->replica);
+ HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) {
+ ovsdb_jsonrpc_monitor_destroy(m);
}
}
-static struct ovsdb_jsonrpc_monitor *
-ovsdb_jsonrpc_monitor_cast(struct ovsdb_replica *replica)
+static struct json *
+ovsdb_jsonrpc_monitor_compose_update(struct ovsdb_jsonrpc_monitor *m,
+ bool initial)
{
- assert(replica->class == &ovsdb_jsonrpc_replica_class);
- return CONTAINER_OF(replica, struct ovsdb_jsonrpc_monitor, replica);
-}
-
-struct ovsdb_jsonrpc_monitor_aux {
- bool initial; /* Sending initial contents of table? */
- const struct ovsdb_jsonrpc_monitor *monitor;
- struct json *json; /* JSON for the whole transaction. */
-
- /* Current table. */
- struct ovsdb_jsonrpc_monitor_table *mt;
- struct json *table_json; /* JSON for table's transaction. */
-};
-
-static bool
-ovsdb_jsonrpc_monitor_change_cb(const struct ovsdb_row *old,
- const struct ovsdb_row *new,
- 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;
- enum ovsdb_jsonrpc_monitor_selection type;
- struct json *old_json, *new_json;
- struct json *row_json;
- char uuid[UUID_LEN + 1];
- int n_changed;
- size_t i;
-
- if (!aux->mt || table != aux->mt->table) {
- aux->mt = shash_find_data(&m->tables, table->schema->name);
- aux->table_json = NULL;
- if (!aux->mt) {
- /* We don't care about rows in this table at all. Tell the caller
- * to skip it. */
- return false;
- }
+ if (!ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
+ return NULL;
}
- type = (aux->initial ? OJMS_INITIAL
- : !old ? OJMS_INSERT
- : !new ? OJMS_DELETE
- : OJMS_MODIFY);
- if (!(aux->mt->select & type)) {
- /* We don't care about this type of change (but do want to be called
- * back for changes to other rows in the same table). */
- return true;
- }
+ return ovsdb_monitor_get_update(m->dbmon, initial, &m->unflushed,
+ m->version);
+}
- old_json = new_json = NULL;
- n_changed = 0;
- for (i = 0; i < aux->mt->columns.n_columns; i++) {
- const struct ovsdb_column *column = aux->mt->columns.columns[i];
- unsigned int idx = column->index;
- bool changed = false;
+static bool
+ovsdb_jsonrpc_monitor_needs_flush(struct ovsdb_jsonrpc_session *s)
+{
+ struct ovsdb_jsonrpc_monitor *m;
- if (type == OJMS_MODIFY) {
- changed = !ovsdb_datum_equals(&old->fields[idx],
- &new->fields[idx], &column->type);
- n_changed += changed;
- }
- if (changed || type == OJMS_DELETE) {
- if (!old_json) {
- old_json = json_object_create();
- }
- json_object_put(old_json, column->name,
- ovsdb_datum_to_json(&old->fields[idx],
- &column->type));
- }
- if (type & (OJMS_INITIAL | OJMS_INSERT | OJMS_MODIFY)) {
- if (!new_json) {
- new_json = json_object_create();
- }
- json_object_put(new_json, column->name,
- ovsdb_datum_to_json(&new->fields[idx],
- &column->type));
+ HMAP_FOR_EACH (m, node, &s->monitors) {
+ if (ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
+ return true;
}
}
- if ((type == OJMS_MODIFY && !n_changed) || (!old_json && !new_json)) {
- /* No reportable changes. */
- json_destroy(old_json);
- json_destroy(new_json);
- return true;
- }
-
- /* Create JSON object for transaction overall. */
- if (!aux->json) {
- aux->json = json_object_create();
- }
-
- /* Create JSON object for transaction on this table. */
- if (!aux->table_json) {
- aux->table_json = json_object_create();
- json_object_put(aux->json, aux->mt->table->schema->name,
- aux->table_json);
- }
-
- /* Create JSON object for transaction on this row. */
- row_json = json_object_create();
- if (old_json) {
- json_object_put(row_json, "old", old_json);
- }
- if (new_json) {
- json_object_put(row_json, "new", new_json);
- }
-
- /* Add JSON row to JSON table. */
- snprintf(uuid, sizeof uuid,
- UUID_FMT, UUID_ARGS(ovsdb_row_get_uuid(new ? new : old)));
- json_object_put(aux->table_json, uuid, row_json);
- return true;
+ return false;
}
-static void
-ovsdb_jsonrpc_monitor_init_aux(struct ovsdb_jsonrpc_monitor_aux *aux,
- const struct ovsdb_jsonrpc_monitor *m,
- bool initial)
+void
+ovsdb_jsonrpc_monitor_destroy(struct ovsdb_jsonrpc_monitor *m)
{
- aux->initial = initial;
- aux->monitor = m;
- aux->json = NULL;
- aux->mt = NULL;
- aux->table_json = NULL;
+ json_destroy(m->monitor_id);
+ hmap_remove(&m->session->monitors, &m->node);
+ ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed);
+ free(m);
}
-static struct ovsdb_error *
-ovsdb_jsonrpc_monitor_commit(struct ovsdb_replica *replica,
- const struct ovsdb_txn *txn,
- bool durable OVS_UNUSED)
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_create_notify(const struct ovsdb_jsonrpc_monitor *m,
+ struct json *params)
{
- struct ovsdb_jsonrpc_monitor *m = ovsdb_jsonrpc_monitor_cast(replica);
- struct ovsdb_jsonrpc_monitor_aux aux;
-
- ovsdb_jsonrpc_monitor_init_aux(&aux, m, false);
- ovsdb_txn_for_each_change(txn, ovsdb_jsonrpc_monitor_change_cb, &aux);
- if (aux.json) {
- struct jsonrpc_msg *msg;
- struct json *params;
-
- params = json_array_create_2(json_clone(aux.monitor->monitor_id),
- aux.json);
- msg = jsonrpc_create_notify("update", params);
- jsonrpc_session_send(aux.monitor->session->js, msg);
+ const char *method;
+
+ switch(m->version) {
+ case OVSDB_MONITOR_V1:
+ method = "update";
+ break;
+ case OVSDB_MONITOR_V2:
+ method = "update2";
+ break;
+ case OVSDB_MONITOR_VERSION_MAX:
+ default:
+ OVS_NOT_REACHED();
}
- return NULL;
+ return jsonrpc_create_notify(method, params);
}
-static struct json *
-ovsdb_jsonrpc_monitor_get_initial(const struct ovsdb_jsonrpc_monitor *m)
+static void
+ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s)
{
- struct ovsdb_jsonrpc_monitor_aux aux;
- struct shash_node *node;
+ struct ovsdb_jsonrpc_monitor *m;
- ovsdb_jsonrpc_monitor_init_aux(&aux, m, true);
- SHASH_FOR_EACH (node, &m->tables) {
- struct ovsdb_jsonrpc_monitor_table *mt = node->data;
+ HMAP_FOR_EACH (m, node, &s->monitors) {
+ struct json *json;
- if (mt->select & OJMS_INITIAL) {
- struct ovsdb_row *row;
+ json = ovsdb_jsonrpc_monitor_compose_update(m, false);
+ if (json) {
+ struct jsonrpc_msg *msg;
+ struct json *params;
- HMAP_FOR_EACH (row, struct ovsdb_row, hmap_node,
- &mt->table->rows) {
- ovsdb_jsonrpc_monitor_change_cb(NULL, row, &aux);
- }
+ params = json_array_create_2(json_clone(m->monitor_id), json);
+ msg = ovsdb_jsonrpc_create_notify(m, params);
+ jsonrpc_session_send(s->js, msg);
}
}
- return aux.json ? aux.json : json_object_create();
}
-static void
-ovsdb_jsonrpc_monitor_destroy(struct ovsdb_replica *replica)
+void
+ovsdb_jsonrpc_disable_monitor2(void)
{
- 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;
- ovsdb_column_set_destroy(&mt->columns);
- free(mt);
- }
- shash_destroy(&m->tables);
- hmap_remove(&m->session->monitors, &m->node);
- free(m);
+ /* Once disabled, it is not possible to re-enable it. */
+ monitor2_enable__ = false;
}
-
-static const struct ovsdb_replica_class ovsdb_jsonrpc_replica_class = {
- ovsdb_jsonrpc_monitor_commit,
- ovsdb_jsonrpc_monitor_destroy
-};
projects / cascardo / ovs.git / blobdiff