#include <errno.h>
+#include "column.h"
#include "json.h"
#include "jsonrpc.h"
+#include "ovsdb-error.h"
+#include "ovsdb-parser.h"
#include "ovsdb.h"
#include "reconnect.h"
+#include "row.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;
-};
-
-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 *);
-
-struct ovsdb_jsonrpc_session {
- struct ovsdb_jsonrpc_server *server;
- struct list node; /* Element in server's sessions list. */
- struct hmap triggers;
- struct list completions; /* Completed triggers. */
-
- struct reconnect *reconnect; /* For back-off. */
- bool active; /* Active or passive connection? */
- struct jsonrpc *rpc;
- struct stream *stream; /* Only if active == false and rpc == NULL. */
-};
+struct ovsdb_jsonrpc_session;
+/* Sessions. */
static void ovsdb_jsonrpc_session_create_active(struct ovsdb_jsonrpc_server *,
const char *name);
static void ovsdb_jsonrpc_session_create_passive(struct ovsdb_jsonrpc_server *,
struct stream *);
-static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *);
-static void ovsdb_jsonrpc_session_disconnect(struct ovsdb_jsonrpc_session *s);
-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_got_request(struct ovsdb_jsonrpc_session *,
- struct jsonrpc_msg *);
-static void ovsdb_jsonrpc_session_got_notify(struct ovsdb_jsonrpc_session *,
- struct jsonrpc_msg *);
+static void ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_server *);
+static void ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_server *);
+
+/* Triggers. */
+static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *,
+ 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 *);
+
+/* Monitors. */
+static struct json *ovsdb_jsonrpc_monitor_create(
+ struct ovsdb_jsonrpc_session *, 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 *);
+\f
+/* JSON-RPC database server. */
struct ovsdb_jsonrpc_server {
struct ovsdb *db;
size_t n_listeners, allocated_listeners;
};
-static void ovsdb_jsonrpc_server_listen(struct ovsdb_jsonrpc_server *,
- struct pstream *);
-
-int
-ovsdb_jsonrpc_server_create(struct ovsdb *db, const struct svec *active,
- const struct svec *passive,
- struct ovsdb_jsonrpc_server **serverp)
+struct ovsdb_jsonrpc_server *
+ovsdb_jsonrpc_server_create(struct ovsdb *db)
{
- struct ovsdb_jsonrpc_server *server;
- const char *name;
- int retval = 0;
- size_t i;
-
- server = xzalloc(sizeof *server);
+ struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
server->db = db;
server->max_sessions = 64;
server->max_triggers = 64;
list_init(&server->sessions);
+ return server;
+}
- SVEC_FOR_EACH (i, name, active) {
- ovsdb_jsonrpc_session_create_active(server, name);
- }
-
- 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;
- }
+void
+ovsdb_jsonrpc_server_listen(struct ovsdb_jsonrpc_server *svr,
+ struct pstream *pstream)
+{
+ if (svr->n_listeners >= svr->allocated_listeners) {
+ svr->listeners = x2nrealloc(svr->listeners, &svr->allocated_listeners,
+ sizeof *svr->listeners);
}
+ svr->listeners[svr->n_listeners++] = pstream;
+}
- *serverp = server;
- return retval;
+void
+ovsdb_jsonrpc_server_connect(struct ovsdb_jsonrpc_server *svr,
+ const char *name)
+{
+ ovsdb_jsonrpc_session_create_active(svr, name);
}
void
ovsdb_jsonrpc_server_run(struct ovsdb_jsonrpc_server *svr)
{
- struct ovsdb_jsonrpc_session *s, *next;
size_t i;
/* Accept new connections. */
}
/* Handle each session. */
- LIST_FOR_EACH_SAFE (s, next, struct ovsdb_jsonrpc_session, node,
- &svr->sessions) {
- int error = ovsdb_jsonrpc_session_run(s);
- if (error) {
- ovsdb_jsonrpc_session_close(s);
- }
- }
+ ovsdb_jsonrpc_session_run_all(svr);
}
void
ovsdb_jsonrpc_server_wait(struct ovsdb_jsonrpc_server *svr)
{
- struct ovsdb_jsonrpc_session *s;
-
if (svr->n_sessions < svr->max_sessions) {
size_t i;
}
}
- LIST_FOR_EACH (s, struct ovsdb_jsonrpc_session, node, &svr->sessions) {
- ovsdb_jsonrpc_session_wait(s);
- }
+ ovsdb_jsonrpc_session_wait_all(svr);
}
+\f
+/* JSON-RPC database server session. */
-static void
-ovsdb_jsonrpc_server_listen(struct ovsdb_jsonrpc_server *svr,
- struct pstream *pstream)
-{
- if (svr->n_listeners >= svr->allocated_listeners) {
- svr->listeners = x2nrealloc(svr->listeners, &svr->allocated_listeners,
- sizeof *svr->listeners);
- }
- 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)
-{
- struct ovsdb_jsonrpc_trigger *t;
-
- HMAP_FOR_EACH_WITH_HASH (t, struct ovsdb_jsonrpc_trigger, hmap_node, hash,
- &s->triggers) {
- if (json_equal(t->id, id)) {
- return t;
- }
- }
-
- return NULL;
-}
+struct ovsdb_jsonrpc_session {
+ struct ovsdb_jsonrpc_server *server;
+ struct list node; /* Element in server's sessions list. */
-static void
-ovsdb_jsonrpc_trigger_complete(struct ovsdb_jsonrpc_trigger *t)
-{
- struct ovsdb_jsonrpc_session *s = t->session;
+ /* Triggers. */
+ struct hmap triggers; /* Hmap of "struct ovsdb_jsonrpc_trigger"s. */
+ struct list completions; /* Completed triggers. */
- if (s->rpc && !jsonrpc_get_status(s->rpc)) {
- struct jsonrpc_msg *reply;
- struct json *result;
+ /* Monitors. */
+ struct hmap monitors; /* Hmap of "struct ovsdb_jsonrpc_monitor"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);
- }
- jsonrpc_send(s->rpc, reply);
- }
+ /* Connecting and reconnecting. */
+ struct reconnect *reconnect; /* For back-off. */
+ bool active; /* Active or passive connection? */
+ struct jsonrpc *rpc;
+ struct stream *stream; /* Only if active == false and rpc == NULL. */
+};
- json_destroy(t->id);
- ovsdb_trigger_destroy(&t->trigger);
- hmap_remove(&s->triggers, &t->hmap_node);
- free(t);
-}
+static void ovsdb_jsonrpc_session_close(struct ovsdb_jsonrpc_session *);
+static void ovsdb_jsonrpc_session_disconnect(struct ovsdb_jsonrpc_session *s);
+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_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_server *svr,
s->server = svr;
list_push_back(&svr->sessions, &s->node);
hmap_init(&s->triggers);
+ hmap_init(&s->monitors);
list_init(&s->completions);
s->reconnect = reconnect_create(time_msec());
reconnect_set_name(s->reconnect, name);
{
reconnect_disconnected(s->reconnect, time_msec(), 0);
if (s->rpc) {
- struct ovsdb_jsonrpc_trigger *t, *next;
-
jsonrpc_error(s->rpc, EOF);
- HMAP_FOR_EACH_SAFE (t, next, struct ovsdb_jsonrpc_trigger, hmap_node,
- &s->triggers) {
- ovsdb_jsonrpc_trigger_complete(t);
- }
-
+ ovsdb_jsonrpc_trigger_complete_all(s);
+ ovsdb_jsonrpc_monitor_remove_all(s);
jsonrpc_close(s->rpc);
s->rpc = NULL;
} else if (s->stream) {
jsonrpc_run(s->rpc);
- 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);
- }
+ ovsdb_jsonrpc_trigger_complete_done(s);
if (!jsonrpc_get_backlog(s->rpc) && !jsonrpc_recv(s->rpc, &msg)) {
reconnect_received(s->reconnect, time_msec());
ovsdb_jsonrpc_session_got_request(s, msg);
} else if (msg->type == JSONRPC_NOTIFY) {
ovsdb_jsonrpc_session_got_notify(s, msg);
+ } else if (msg->type == JSONRPC_REPLY
+ && msg->id && msg->id->type == JSON_STRING
+ && !strcmp(msg->id->u.string, "echo")) {
+ /* It's a reply to our echo request. Ignore it. */
} else {
VLOG_WARN("%s: received unexpected %s message",
jsonrpc_get_name(s->rpc),
case RECONNECT_PROBE:
if (s->rpc) {
- struct json *params = json_array_create_empty();
- jsonrpc_send(s->rpc, jsonrpc_create_request("echo", params));
+ struct json *params;
+ struct jsonrpc_msg *request;
+
+ params = json_array_create_empty();
+ request = jsonrpc_create_request("echo", params, NULL);
+ json_destroy(request->id);
+ request->id = json_string_create("echo");
+ jsonrpc_send(s->rpc, request);
}
break;
}
return s->active || s->rpc ? 0 : ETIMEDOUT;
+}
+
+static void
+ovsdb_jsonrpc_session_run_all(struct ovsdb_jsonrpc_server *svr)
+{
+ struct ovsdb_jsonrpc_session *s, *next;
+ LIST_FOR_EACH_SAFE (s, next, struct ovsdb_jsonrpc_session, node,
+ &svr->sessions) {
+ int error = ovsdb_jsonrpc_session_run(s);
+ if (error) {
+ ovsdb_jsonrpc_session_close(s);
+ }
+ }
}
static void
reconnect_wait(s->reconnect, time_msec());
}
-static struct jsonrpc_msg *
-execute_transaction(struct ovsdb_jsonrpc_session *s,
- struct jsonrpc_msg *request)
+static void
+ovsdb_jsonrpc_session_wait_all(struct ovsdb_jsonrpc_server *svr)
{
- struct ovsdb_jsonrpc_trigger *t;
- size_t hash;
+ struct ovsdb_jsonrpc_session *s;
- /* 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);
+ LIST_FOR_EACH (s, struct ovsdb_jsonrpc_session, node, &svr->sessions) {
+ ovsdb_jsonrpc_session_wait(s);
}
+}
- /* 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);
-
+static struct jsonrpc_msg *
+execute_transaction(struct ovsdb_jsonrpc_session *s,
+ struct jsonrpc_msg *request)
+{
+ ovsdb_jsonrpc_trigger_create(s, request->id, request->params);
request->id = NULL;
request->params = NULL;
-
- /* Complete early if possible. */
- if (ovsdb_trigger_is_complete(&t->trigger)) {
- ovsdb_jsonrpc_trigger_complete(t);
- }
-
return NULL;
}
if (!strcmp(request->method, "transact")) {
reply = execute_transaction(s, request);
+ } else if (!strcmp(request->method, "monitor")) {
+ reply = jsonrpc_create_reply(
+ ovsdb_jsonrpc_monitor_create(s, 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")) {
reply = jsonrpc_create_reply(
ovsdb_schema_to_json(s->server->db->schema), request->id);
}
jsonrpc_msg_destroy(request);
}
+\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 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,
+ 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) {
+ jsonrpc_send(s->rpc, jsonrpc_create_error(
+ json_string_create("duplicate request ID"), id));
+ json_destroy(id);
+ json_destroy(params);
+ return;
+ }
+
+ /* Insert into trigger table. */
+ t = xmalloc(sizeof *t);
+ ovsdb_trigger_init(s->server->db,
+ &t->trigger, params, &s->completions,
+ time_msec());
+ t->session = s;
+ 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, struct ovsdb_jsonrpc_trigger, 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 = t->session;
+
+ if (s->rpc && !jsonrpc_get_status(s->rpc)) {
+ 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);
+ }
+ jsonrpc_send(s->rpc, 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, struct ovsdb_jsonrpc_trigger, 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)) {
+ struct ovsdb_jsonrpc_trigger *t
+ = CONTAINER_OF(s->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;
+};
+
+struct ovsdb_jsonrpc_monitor {
+ struct ovsdb_replica replica;
+ struct ovsdb_jsonrpc_session *session;
+ 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, struct ovsdb_jsonrpc_monitor, node,
+ json_hash(monitor_id, 0), &s->monitors) {
+ if (json_equal(m->monitor_id, monitor_id)) {
+ return m;
+ }
+ }
+
+ return NULL;
+}
+
+static struct json *
+ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
+ 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 != 2) {
+ error = ovsdb_syntax_error(params, NULL, "invalid parameters");
+ goto error;
+ }
+ monitor_id = params->u.array.elems[0];
+ monitor_requests = params->u.array.elems[1];
+ 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(s->server->db, &m->replica);
+ m->session = s;
+ 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;
+
+ table = ovsdb_get_table(s->server->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;
+ }
+
+ if (columns_json) {
+ error = ovsdb_column_set_from_json(columns_json, table,
+ &mt->columns);
+ if (error) {
+ goto error;
+ }
+ } else {
+ struct shash_node *node;
+
+ 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);
+ }
+ }
+ }
+
+ 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);
+ if (error) {
+ goto error;
+ }
+ }
+ }
+
+ return ovsdb_jsonrpc_monitor_get_initial(m);
+
+error:
+ if (m) {
+ ovsdb_remove_replica(s->server->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(s->server->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,
+ struct ovsdb_jsonrpc_monitor, node, &s->monitors) {
+ ovsdb_remove_replica(s->server->db, &m->replica);
+ }
+}
+
+static struct ovsdb_jsonrpc_monitor *
+ovsdb_jsonrpc_monitor_cast(struct ovsdb_replica *replica)
+{
+ 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;
+ }
+ }
+
+ 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;
+ }
+
+ 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;
+
+ 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));
+ }
+ }
+ 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;
+}
+
+static void
+ovsdb_jsonrpc_monitor_init_aux(struct ovsdb_jsonrpc_monitor_aux *aux,
+ const struct ovsdb_jsonrpc_monitor *m,
+ bool initial)
+{
+ aux->initial = initial;
+ aux->monitor = m;
+ aux->json = NULL;
+ aux->mt = NULL;
+ aux->table_json = NULL;
+}
+
+static struct ovsdb_error *
+ovsdb_jsonrpc_monitor_commit(struct ovsdb_replica *replica,
+ const struct ovsdb_txn *txn, bool durable UNUSED)
+{
+ 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_send(aux.monitor->session->rpc, msg);
+ }
+
+ 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;
+
+ ovsdb_jsonrpc_monitor_init_aux(&aux, m, true);
+ 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, struct ovsdb_row, hmap_node,
+ &mt->table->rows) {
+ ovsdb_jsonrpc_monitor_change_cb(NULL, row, &aux);
+ }
+ }
+ }
+ return aux.json ? aux.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;
+ ovsdb_column_set_destroy(&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
+};
projects / openvswitch / blobdiff