ovsdb: test ovs-vswitchd for backward compatibility

[cascardo/ovs.git] / ovsdb / ovsdb-server.c

diff --git a/ovsdb/ovsdb-server.c b/ovsdb/ovsdb-server.c
index 97b65b6..25fa9c6 100644 (file)
--- a/ovsdb/ovsdb-server.c
+++ b/ovsdb/ovsdb-server.c
@@ -79,6 +79,7 @@ static unixctl_cb_func ovsdb_server_compact;
 static unixctl_cb_func ovsdb_server_reconnect;
 static unixctl_cb_func ovsdb_server_perf_counters_clear;
 static unixctl_cb_func ovsdb_server_perf_counters_show;
+static unixctl_cb_func ovsdb_server_disable_monitor2;
 
 struct server_config {
     struct sset *remotes;
@@ -329,6 +330,11 @@ main(int argc, char *argv[])
     unixctl_command_register("ovsdb-server/perf-counters-clear", "", 0, 0,
                              ovsdb_server_perf_counters_clear, NULL);
 
+    /* Simulate the behavior of OVS release prior to version 2.5 that
+     * does not support the monitor2 method.  */
+    unixctl_command_register("ovsdb-server/disable-monitor2", "", 0, 0,
+                             ovsdb_server_disable_monitor2, jsonrpc);
+
     main_loop(jsonrpc, &all_dbs, unixctl, &remotes, run_process, &exiting);
 
     ovsdb_jsonrpc_server_destroy(jsonrpc);
@@ -1052,6 +1058,20 @@ ovsdb_server_perf_counters_clear(struct unixctl_conn *conn, int argc OVS_UNUSED,
     unixctl_command_reply(conn, NULL);
 }
 
+/* "ovsdb-server/disable-monitor2": makes ovsdb-server drop all of its
+ * JSON-RPC connections and reconnect. New sessions will not recognize
+ * the 'monitor2' method.   */
+static void
+ovsdb_server_disable_monitor2(struct unixctl_conn *conn, int argc OVS_UNUSED,
+                              const char *argv[] OVS_UNUSED, void *jsonrpc_)
+{
+    struct ovsdb_jsonrpc_server *jsonrpc = jsonrpc_;
+
+    ovsdb_jsonrpc_disable_monitor2();
+    ovsdb_jsonrpc_server_reconnect(jsonrpc);
+    unixctl_command_reply(conn, NULL);
+}
+
 static void
 ovsdb_server_compact(struct unixctl_conn *conn, int argc,
                      const char *argv[], void *dbs_)