#include "bitmap.h"
#include "column.h"
#include "dynamic-string.h"
+#include "monitor.h"
#include "json.h"
#include "jsonrpc.h"
#include "ovsdb-error.h"
#include "timeval.h"
#include "transaction.h"
#include "trigger.h"
-#include "monitor.h"
#include "openvswitch/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. */
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
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(
+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 *,
/* Monitors. */
static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_create(
struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params,
- const struct json *request_id);
+ 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,
struct ovsdb_jsonrpc_server {
struct ovsdb_server up;
- unsigned int n_sessions, max_sessions;
+ unsigned int n_sessions;
struct shash remotes; /* Contains "struct ovsdb_jsonrpc_remote *"s. */
};
{
struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
ovsdb_server_init(&server->up);
- server->max_sessions = 330; /* Random limit. */
shash_init(&server->remotes);
return server;
}
/* 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
+ * 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
memset(status, 0, sizeof *status);
remote = shash_find_data(&svr->remotes, target);
- return remote && ovsdb_jsonrpc_session_get_status(remote, status);
+
+ 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
struct ovsdb_jsonrpc_remote *remote = node->data;
if (remote->listener) {
- if (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));
- }
- } else {
- VLOG_WARN_RL(&rl, "%s: connection exceeded maximum (%d)",
+ 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),
- svr->max_sessions);
+ 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);
}
struct simap *usage)
{
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));
}
}
}
+/* Sets the 'status' of for the 'remote' with an outgoing connection. */
static bool
-ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_remote *remote,
- struct ovsdb_jsonrpc_remote_status *status)
+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;
- 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;
status->is_connected = jsonrpc_session_is_connected(js);
status->locks_held = ds_steal_cstr(&locks_held);
status->locks_waiting = ds_steal_cstr(&locks_waiting);
status->locks_lost = ds_steal_cstr(&locks_lost);
-
- status->n_connections = list_size(&remote->sessions);
-
- return true;
}
/* Examines 'request' to determine the database to which it relates, and then
if (!reply) {
reply = execute_transaction(s, db, request);
}
- } else if (!strcmp(request->method, "monitor")) {
+ } else if (!strcmp(request->method, "monitor") ||
+ (monitor2_enable__ && !strcmp(request->method, "monitor2"))) {
struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
if (!reply) {
+ 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,
- request->id);
+ version, request->id);
}
} else if (!strcmp(request->method, "monitor_cancel")) {
reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params),
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 struct ovsdb_jsonrpc_monitor *
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->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);
}
}
+ 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();
}
static struct json *
-ovsdb_jsonrpc_monitor_compose_update(
- struct ovsdb_jsonrpc_monitor *monitor, bool initial)
+ovsdb_jsonrpc_monitor_compose_update(struct ovsdb_jsonrpc_monitor *m,
+ bool initial)
{
- return ovsdb_monitor_compose_update(monitor->dbmon, initial,
- &monitor->unflushed);
+ if (!ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
+ return NULL;
+ }
+
+ return ovsdb_monitor_get_update(m->dbmon, initial, &m->unflushed,
+ m->version);
}
static bool
{
json_destroy(m->monitor_id);
hmap_remove(&m->session->monitors, &m->node);
- ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m);
+ ovsdb_monitor_remove_jsonrpc_monitor(m->dbmon, m, m->unflushed);
free(m);
}
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_create_notify(const struct ovsdb_jsonrpc_monitor *m,
+ struct json *params)
+{
+ 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 jsonrpc_create_notify(method, params);
+}
+
static void
ovsdb_jsonrpc_monitor_flush_all(struct ovsdb_jsonrpc_session *s)
{
struct json *params;
params = json_array_create_2(json_clone(m->monitor_id), json);
- msg = jsonrpc_create_notify("update", params);
+ msg = ovsdb_jsonrpc_create_notify(m, params);
jsonrpc_session_send(s->js, msg);
}
}
}
+
+void
+ovsdb_jsonrpc_disable_monitor2(void)
+{
+ /* Once disabled, it is not possible to re-enable it. */
+ monitor2_enable__ = false;
+}
projects / cascardo / ovs.git / blobdiff