[gnome-software] Implement a fake upgrade using the dummy plugin

[Richard Hughes <rhughes src gnome org>]

commit 130c6d75652f5bace9b614241e4235dbcb469a75
Author: Richard Hughes <richard hughsie com>
Date:   Tue Apr 12 18:46:58 2016 +0100

    Implement a fake upgrade using the dummy plugin
    
    This adds a cancellable delay which can also be used from refresh.

 src/plugins/gs-plugin-dummy.c |  106 ++++++++++++++++++++++++++++++++++++-----
 1 files changed, 93 insertions(+), 13 deletions(-)
---
diff --git a/src/plugins/gs-plugin-dummy.c b/src/plugins/gs-plugin-dummy.c
index 51ecf49..4fa269c 100644
--- a/src/plugins/gs-plugin-dummy.c
+++ b/src/plugins/gs-plugin-dummy.c
@@ -250,15 +250,20 @@ gs_plugin_add_distro_upgrades (GsPlugin *plugin,
        gs_app_set_kind (app, AS_APP_KIND_OS_UPGRADE);
        gs_app_set_state (app, AS_APP_STATE_AVAILABLE);
        gs_app_set_name (app, GS_APP_QUALITY_LOWEST, "Fedora");
-       gs_app_set_version (app, "rawhide");
+       gs_app_set_url (app, AS_URL_KIND_HOMEPAGE,
+                       "https://fedoraproject.org/wiki/Releases/24/Schedule";);
+       gs_app_set_version (app, "25");
+       gs_app_set_management_plugin (app, plugin->name);
        gs_plugin_add_app (list, app);
        return TRUE;
 }
 
 typedef struct {
-       GsApp           *app;
        GsPlugin        *plugin;
+       GsApp           *app;
        GMainLoop       *loop;
+       GCancellable    *cancellable;
+       GError          **error;
        guint            percentage;
 } GsPluginDummyHelper;
 
@@ -274,6 +279,11 @@ gs_plugin_dummy_refresh_cb (gpointer user_data)
                g_main_loop_quit (helper->loop);
                return FALSE;
        }
+       if (helper->error != NULL && *(helper->error) != NULL) {
+               g_main_loop_quit (helper->loop);
+               return FALSE;
+       }
+       g_debug ("dummy percentage=%i%%", helper->percentage);
        gs_app_set_progress (helper->app, helper->percentage);
        gs_plugin_status_update (helper->plugin,
                                 helper->app,
@@ -282,6 +292,51 @@ gs_plugin_dummy_refresh_cb (gpointer user_data)
 }
 
 /**
+ * gs_plugin_dummy_delay_cancel_cb:
+ */
+static void
+gs_plugin_dummy_delay_cancel_cb (GCancellable *cancellable,
+                                GsPluginDummyHelper *helper)
+{
+       g_debug ("dummy delay cancelled");
+       g_cancellable_set_error_if_cancelled (cancellable, helper->error);
+}
+
+/**
+ * gs_plugin_dummy_delay:
+ */
+static gboolean
+gs_plugin_dummy_delay (GsPlugin *plugin,
+                      GsApp *app,
+                      guint timeout_ms,
+                      GCancellable *cancellable,
+                      GError **error)
+{
+       g_autofree GsPluginDummyHelper *helper = g_new0 (GsPluginDummyHelper, 1);
+       g_autoptr(GMainLoop) loop = g_main_loop_new (NULL, FALSE);
+
+       /* cancel the delay on cancellation */
+       if (cancellable != NULL) {
+               g_cancellable_connect (cancellable,
+                                      G_CALLBACK (gs_plugin_dummy_delay_cancel_cb),
+                                      helper, NULL);
+       }
+
+       /* set up callbacks */
+       helper->app = app;
+       helper->cancellable = cancellable;
+       helper->error = error;
+       helper->loop = loop;
+       helper->percentage = 0;
+       helper->plugin = plugin;
+       g_debug ("dummy waiting for %ims", timeout_ms);
+       g_timeout_add (timeout_ms / 10, gs_plugin_dummy_refresh_cb, helper);
+       g_main_loop_run (loop);
+       g_debug ("dummy done");
+       return helper->error != NULL;
+}
+
+/**
  * gs_plugin_refresh:
  */
 gboolean
@@ -291,9 +346,7 @@ gs_plugin_refresh (GsPlugin *plugin,
                   GCancellable *cancellable,
                   GError **error)
 {
-       guint delay_ms = 2000;
-       g_autofree GsPluginDummyHelper *helper = g_new0 (GsPluginDummyHelper, 1);
-       g_autoptr(GMainLoop) loop = g_main_loop_new (NULL, FALSE);
+       guint delay_ms = 100;
        g_autoptr(GsApp) app = gs_app_new (NULL);
 
        /* each one takes more time */
@@ -302,14 +355,41 @@ gs_plugin_refresh (GsPlugin *plugin,
        if (flags & GS_PLUGIN_REFRESH_FLAGS_PAYLOAD)
                delay_ms += 5000;
 
-       /* set up callbacks */
-       helper->app = app;
-       helper->plugin = plugin;
-       helper->loop = loop;
-       g_debug ("dummy waiting");
-       g_timeout_add (delay_ms / 10, gs_plugin_dummy_refresh_cb, helper);
-       g_main_loop_run (loop);
-       g_debug ("dummy done");
+       /* do delay */
+       return gs_plugin_dummy_delay (plugin, app, delay_ms, cancellable, error);
+}
+
+/**
+ * gs_plugin_app_upgrade_download:
+ */
+gboolean
+gs_plugin_app_upgrade_download (GsPlugin *plugin, GsApp *app,
+                               GCancellable *cancellable, GError **error)
+{
+       g_debug ("starting download");
+       gs_app_set_state (app, AS_APP_STATE_INSTALLING);
+       if (!gs_plugin_dummy_delay (plugin, app, 5000, cancellable, error))
+               return FALSE;
+       return TRUE;
+}
+
+/**
+ * gs_plugin_app_upgrade_trigger:
+ */
+gboolean
+gs_plugin_app_upgrade_trigger (GsPlugin *plugin, GsApp *app,
+                              GCancellable *cancellable, GError **error)
+{
+       return TRUE;
+}
+
+/**
+ * gs_plugin_update_cancel:
+ */
+gboolean
+gs_plugin_update_cancel (GsPlugin *plugin, GsApp *app,
+                        GCancellable *cancellable, GError **error)
+{
        return TRUE;
 }