discover: Maintain a backlog of status updates

[petitboot] / discover / discover-server.c

diff --git a/discover/discover-server.c b/discover/discover-server.c
index ad184f66a43559fcc78707b7aa69c204bfec69f2..a3087b3335d423fa1e01fc25ab6bfe705a23933f 100644 (file)
--- a/discover/discover-server.c
+++ b/discover/discover-server.c
@@ -28,6 +28,7 @@ struct discover_server {
        struct waitset *waitset;
        struct waiter *waiter;
        struct list clients;
+       struct list status;
        struct device_handler *device_handler;
 };
 
@@ -282,6 +283,7 @@ static int discover_server_process_message(void *arg)
 static int discover_server_process_connection(void *arg)
 {
        struct discover_server *server = arg;
+       struct statuslog_entry *entry;
        int fd, rc, i, n_devices;
        struct client *client;
 
@@ -333,6 +335,10 @@ static int discover_server_process_connection(void *arg)
                }
        }
 
+       /* send status backlog to client */
+       list_for_each_entry(&server->status, entry, list)
+               write_boot_status_message(server, client, entry->status);
+
        return 0;
 }
 
@@ -368,8 +374,26 @@ void discover_server_notify_device_remove(struct discover_server *server,
 void discover_server_notify_boot_status(struct discover_server *server,
                struct status *status)
 {
+       struct statuslog_entry *entry;
        struct client *client;
 
+       /* Duplicate the status struct to add to the backlog */
+       entry = talloc(server, struct statuslog_entry);
+       if (!entry) {
+               pb_log("Failed to allocated saved status!\n");
+       } else {
+               entry->status = talloc(entry, struct status);
+               if (entry->status) {
+                       entry->status->type = status->type;
+                       entry->status->message = talloc_strdup(entry->status,
+                                                              status->message);
+                       entry->status->backlog = true;
+                       list_add_tail(&server->status, &entry->list);
+               } else {
+                       talloc_free(entry);
+               }
+       }
+
        list_for_each_entry(&server->clients, client, list)
                write_boot_status_message(server, client, status);
 }
@@ -410,6 +434,7 @@ struct discover_server *discover_server_init(struct waitset *waitset)
        server->waiter = NULL;
        server->waitset = waitset;
        list_init(&server->clients);
+       list_init(&server->status);
 
        unlink(PB_SOCKET_PATH);