#include "bitmap.h"
#include "column.h"
-#include "dynamic-string.h"
+#include "openvswitch/dynamic-string.h"
+#include "monitor.h"
#include "json.h"
#include "jsonrpc.h"
#include "ovsdb-error.h"
#include "ovsdb-parser.h"
#include "ovsdb.h"
+#include "condition.h"
#include "poll-loop.h"
#include "reconnect.h"
#include "row.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 monitor_cond, causing jsonrpc to respond to
+ * monitor_cond method with an error. */
+static bool monitor_cond_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,
+ enum ovsdb_monitor_version, const struct json *request_id);
+static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cond_change(
+ struct ovsdb_jsonrpc_session *s,
+ struct json *params,
const struct json *request_id);
static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cancel(
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);
+static struct jsonrpc_msg * ovsdb_jsonrpc_create_notify(
+ const struct ovsdb_jsonrpc_monitor *m,
+ struct json *params);
\f
/* JSON-RPC database server. */
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;
}
remote = xmalloc(sizeof *remote);
remote->server = svr;
remote->listener = listener;
- list_init(&remote->sessions);
+ ovs_list_init(&remote->sessions);
remote->dscp = options->dscp;
shash_add(&svr->remotes, name, 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
+ * 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 = !ovs_list_is_empty(&remote->sessions);
+ status->n_connections = ovs_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);
}
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 *);
+ struct jsonrpc_msg *);
static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
struct jsonrpc_msg *);
s = xzalloc(sizeof *s);
ovsdb_session_init(&s->up, &remote->server->up);
s->remote = remote;
- list_push_back(&remote->sessions, &s->node);
+ ovs_list_push_back(&remote->sessions, &s->node);
hmap_init(&s->triggers);
hmap_init(&s->monitors);
s->js = js;
hmap_destroy(&s->triggers);
jsonrpc_session_close(s->js);
- list_remove(&s->node);
+ ovs_list_remove(&s->node);
s->remote->server->n_sessions--;
ovsdb_session_destroy(&s->up);
free(s);
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 (ovs_list_is_empty(sessions)) {
+ return false;
+ }
+
+ ovs_assert(ovs_list_is_singleton(sessions));
+ s = CONTAINER_OF(ovs_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") ||
+ (monitor_cond_enable__ && !strcmp(request->method,
+ "monitor_cond"))) {
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_cond_change")) {
+ reply = ovsdb_jsonrpc_monitor_cond_change(s, request->params,
+ request->id);
} else if (!strcmp(request->method, "monitor_cancel")) {
reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params),
request->id);
static void
ovsdb_jsonrpc_trigger_complete_done(struct ovsdb_jsonrpc_session *s)
{
- while (!list_is_empty(&s->up.completions)) {
+ while (!ovs_list_is_empty(&s->up.completions)) {
struct ovsdb_jsonrpc_trigger *t
= CONTAINER_OF(s->up.completions.next,
struct ovsdb_jsonrpc_trigger, trigger.node);
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;
+ struct ovsdb_monitor_session_condition *condition;/* Session's condition */
};
static struct ovsdb_jsonrpc_monitor *
}
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)
+ovsdb_jsonrpc_parse_monitor_request(
+ struct ovsdb_monitor *dbmon,
+ const struct ovsdb_table *table,
+ struct ovsdb_monitor_session_condition *cond,
+ const struct json *monitor_request)
{
const struct ovsdb_table_schema *ts = table->schema;
enum ovsdb_monitor_selection select;
- const struct json *columns, *select_json;
+ const struct json *columns, *select_json, *where = NULL;
struct ovsdb_parser parser;
struct ovsdb_error *error;
ovsdb_parser_init(&parser, monitor_request, "table %s", ts->name);
+ if (cond) {
+ where = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL);
+ }
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;
return ovsdb_syntax_error(columns, NULL, "%s is not a valid "
"column name", s);
}
- ovsdb_monitor_add_column(dbmon, table, column, select,
- allocated_columns);
+ if (ovsdb_monitor_add_column(dbmon, table, column,
+ select, true)) {
+ return ovsdb_syntax_error(columns, NULL, "column %s "
+ "mentioned more than once",
+ column->name);
+ }
}
} 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);
+ if (ovsdb_monitor_add_column(dbmon, table, column,
+ select, true)) {
+ return ovsdb_syntax_error(columns, NULL, "column %s "
+ "mentioned more than once",
+ column->name);
+ }
}
}
}
+ if (cond) {
+ error = ovsdb_monitor_table_condition_create(cond, table, where);
+ if (error) {
+ return error;
+ }
+ }
return NULL;
}
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->session = s;
m->db = db;
m->dbmon = ovsdb_monitor_create(db, m);
+ if (version == OVSDB_MONITOR_V2) {
+ m->condition = ovsdb_monitor_session_condition_create();
+ }
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_FOR_EACH (node, json_object(monitor_requests)) {
const struct ovsdb_table *table;
- const char *column_name;
- size_t allocated_columns;
const struct json *mr_value;
size_t i;
/* 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(
- m->dbmon, table, array->elems[i], &allocated_columns);
+ error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon,
+ table,
+ m->condition,
+ array->elems[i]);
if (error) {
goto error;
}
}
} else {
- error = ovsdb_jsonrpc_parse_monitor_request(
- m->dbmon, table, mr_value, &allocated_columns);
+ error = ovsdb_jsonrpc_parse_monitor_request(m->dbmon,
+ table,
+ m->condition,
+ mr_value);
if (error) {
goto error;
}
}
+ }
- column_name = ovsdb_monitor_table_check_duplicates(m->dbmon, table);
+ 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;
+ }
- if (column_name) {
- error = ovsdb_syntax_error(mr_value, NULL, "column %s "
- "mentioned more than once",
- column_name);
- goto error;
- }
+ /* Only now we can bind session's condition to ovsdb_monitor */
+ if (m->condition) {
+ ovsdb_monitor_condition_bind(m->dbmon, m->condition);
}
ovsdb_monitor_get_initial(m->dbmon);
return jsonrpc_create_error(json, request_id);
}
+static struct ovsdb_error *
+ovsdb_jsonrpc_parse_monitor_cond_change_request(
+ struct ovsdb_jsonrpc_monitor *m,
+ const struct ovsdb_table *table,
+ const struct json *cond_change_req)
+{
+ const struct ovsdb_table_schema *ts = table->schema;
+ const struct json *condition, *columns;
+ struct ovsdb_parser parser;
+ struct ovsdb_error *error;
+
+ ovsdb_parser_init(&parser, cond_change_req, "table %s", ts->name);
+ columns = ovsdb_parser_member(&parser, "columns", OP_ARRAY | OP_OPTIONAL);
+ condition = ovsdb_parser_member(&parser, "where", OP_ARRAY | OP_OPTIONAL);
+
+ error = ovsdb_parser_finish(&parser);
+ if (error) {
+ return error;
+ }
+
+ if (columns) {
+ error = ovsdb_syntax_error(cond_change_req, NULL, "changing columns "
+ "is unsupported");
+ return error;
+ }
+ error = ovsdb_monitor_table_condition_update(m->dbmon, m->condition, table,
+ condition);
+
+ return error;
+}
+
+static struct jsonrpc_msg *
+ovsdb_jsonrpc_monitor_cond_change(struct ovsdb_jsonrpc_session *s,
+ struct json *params,
+ const struct json *request_id)
+{
+ struct ovsdb_error *error;
+ struct ovsdb_jsonrpc_monitor *m;
+ struct json *monitor_cond_change_reqs;
+ struct shash_node *node;
+ struct json *json;
+
+ if (json_array(params)->n != 3) {
+ error = ovsdb_syntax_error(params, NULL, "invalid parameters");
+ goto error;
+ }
+
+ m = ovsdb_jsonrpc_monitor_find(s, params->u.array.elems[0]);
+ if (!m) {
+ error = ovsdb_syntax_error(request_id, NULL,
+ "unknown monitor session");
+ goto error;
+ }
+
+ monitor_cond_change_reqs = params->u.array.elems[2];
+ if (monitor_cond_change_reqs->type != JSON_OBJECT) {
+ error =
+ ovsdb_syntax_error(NULL, NULL,
+ "monitor-cond-change-requests must be object");
+ goto error;
+ }
+
+ SHASH_FOR_EACH (node, json_object(monitor_cond_change_reqs)) {
+ const struct ovsdb_table *table;
+ 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;
+ }
+ if (!ovsdb_monitor_table_exists(m->dbmon, table)) {
+ error = ovsdb_syntax_error(NULL, NULL,
+ "no table named %s in monitor session",
+ node->name);
+ goto error;
+ }
+
+ mr_value = node->data;
+ 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_cond_change_request(
+ m, table, array->elems[i]);
+ if (error) {
+ goto error;
+ }
+ }
+ } else {
+ error = ovsdb_syntax_error(
+ NULL, NULL,
+ "table %s no monitor-cond-change JSON array",
+ node->name);
+ goto error;
+ }
+ }
+
+ /* Change monitor id */
+ hmap_remove(&s->monitors, &m->node);
+ json_destroy(m->monitor_id);
+ m->monitor_id = json_clone(params->u.array.elems[1]);
+ hmap_insert(&s->monitors, &m->node, json_hash(m->monitor_id, 0));
+
+ /* Send the new update, if any, represents the difference from the old
+ * condition and the new one. */
+ struct json *update_json;
+
+ update_json = ovsdb_monitor_get_update(m->dbmon, false, true,
+ &m->unflushed, m->condition, m->version);
+ if (update_json) {
+ struct jsonrpc_msg *msg;
+ struct json *params;
+
+ params = json_array_create_2(json_clone(m->monitor_id), update_json);
+ msg = ovsdb_jsonrpc_create_notify(m, params);
+ jsonrpc_session_send(s->js, msg);
+ }
+
+ return jsonrpc_create_reply(json_object_create(), request_id);
+
+error:
+
+ json = ovsdb_error_to_json(error);
+ ovsdb_error_destroy(error);
+ return jsonrpc_create_error(json, request_id);
+}
+
static struct jsonrpc_msg *
ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s,
struct json_array *params,
ovsdb_jsonrpc_monitor_compose_update(struct ovsdb_jsonrpc_monitor *m,
bool initial)
{
- return ovsdb_monitor_compose_update(m->dbmon, initial, &m->unflushed);
+
+ if (!ovsdb_monitor_needs_flush(m->dbmon, m->unflushed)) {
+ return NULL;
+ }
+
+ return ovsdb_monitor_get_update(m->dbmon, initial, false,
+ &m->unflushed, m->condition, 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);
+ ovsdb_monitor_session_condition_destroy(m->condition);
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_monitor_cond(void)
+{
+ /* Once disabled, it is not possible to re-enable it. */
+ monitor_cond_enable__ = false;
+}
projects / cascardo / ovs.git / blobdiff