[jsonrpc-glib] server: add client foreach function

[Christian Hergert <chergert src gnome org>]

commit ae6a206d35df93799d41521386d79a94f0cb6477
Author: Christian Hergert <chergert redhat com>
Date:   Wed Dec 27 02:23:23 2017 -0800

    server: add client foreach function

 src/jsonrpc-server.c | 32 ++++++++++++++++++++++++++++++++
 src/jsonrpc-server.h |  4 ++++
 2 files changed, 36 insertions(+)
---
diff --git a/src/jsonrpc-server.c b/src/jsonrpc-server.c
index c91f859..e0371f1 100644
--- a/src/jsonrpc-server.c
+++ b/src/jsonrpc-server.c
@@ -360,3 +360,35 @@ jsonrpc_server_remove_handler (JsonrpcServer *self,
         }
     }
 }
+
+/**
+ * jsonrpc_server_foreach:
+ * @self: a #JsonrpcServer
+ * @foreach_func: (scope call): a callback for each client
+ * @user_data: closure data for @foreach_func
+ *
+ * Calls @foreach_func for every client connected.
+ *
+ * Since: 3.28
+ */
+void
+jsonrpc_server_foreach (JsonrpcServer *self,
+                        GFunc          foreach_func,
+                        gpointer       user_data)
+{
+  JsonrpcServerPrivate *priv = jsonrpc_server_get_instance_private (self);
+  g_autofree gpointer *keys = NULL;
+  guint len;
+
+  g_return_if_fail (JSONRPC_IS_SERVER (self));
+  g_return_if_fail (foreach_func != NULL);
+
+  keys = g_hash_table_get_keys_as_array (priv->clients, &len);
+
+  for (guint i = 0; i < len; i++)
+    {
+      JsonrpcClient *client = keys[i];
+      g_assert (JSONRPC_IS_CLIENT (client));
+      foreach_func (client, user_data);
+    }
+}
diff --git a/src/jsonrpc-server.h b/src/jsonrpc-server.h
index c74833e..42cad86 100644
--- a/src/jsonrpc-server.h
+++ b/src/jsonrpc-server.h
@@ -75,6 +75,10 @@ guint          jsonrpc_server_add_handler      (JsonrpcServer        *self,
 JSONRPC_AVAILABLE_IN_3_26
 void           jsonrpc_server_remove_handler   (JsonrpcServer        *self,
                                                 guint                 handler_id);
+JSONRPC_AVAILABLE_IN_3_28
+void           jsonrpc_server_foreach          (JsonrpcServer        *self,
+                                                GFunc                 foreach_func,
+                                                gpointer              user_data);
 
 G_END_DECLS