[tracker-miners/wip/carlosg/dbus-api-changes: 12/13] tracker-extract: Hook up Files.Proxy Graphs property

[Carlos Garnacho <carlosg src gnome org>]

commit 30c007dfab6b813ad0c849359c0acd7d5406f45b
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Jun 20 22:24:02 2020 +0200

    tracker-extract: Hook up Files.Proxy Graphs property
    
    These graphs are now prioritized by tracker-extract.

 src/tracker-extract/tracker-extract-decorator.c | 44 +++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
---
diff --git a/src/tracker-extract/tracker-extract-decorator.c b/src/tracker-extract/tracker-extract-decorator.c
index 5e050163b..8e93f406e 100644
--- a/src/tracker-extract/tracker-extract-decorator.c
+++ b/src/tracker-extract/tracker-extract-decorator.c
@@ -49,6 +49,7 @@ struct _TrackerExtractDecoratorPrivate {
 
        TrackerExtractPersistence *persistence;
        GHashTable *recovery_files;
+       GDBusProxy *index_proxy;
 };
 
 typedef struct {
@@ -117,6 +118,7 @@ tracker_extract_decorator_finalize (GObject *object)
                g_timer_destroy (priv->timer);
 
        g_hash_table_unref (priv->recovery_files);
+       g_clear_object (&priv->index_proxy);
 
        G_OBJECT_CLASS (tracker_extract_decorator_parent_class)->finalize (object);
 }
@@ -469,6 +471,31 @@ tracker_extract_decorator_init (TrackerExtractDecorator *decorator)
                                                      (GDestroyNotify) g_object_unref);
 }
 
+static void
+update_graphs_from_proxy (TrackerExtractDecorator *decorator,
+                          GDBusProxy              *proxy)
+{
+       const gchar **graphs = NULL;
+       GVariant *v;
+
+       v = g_dbus_proxy_get_cached_property (proxy, "Graphs");
+       if (v)
+               graphs = g_variant_get_strv (v, NULL);
+
+       tracker_decorator_set_priority_graphs (TRACKER_DECORATOR (decorator),
+                                              graphs);
+       g_free (graphs);
+}
+
+static void
+proxy_properties_changed_cb (GDBusProxy *proxy,
+                             GVariant   *changed_properties,
+                             GStrv       invalidated_properties,
+                             gpointer    user_data)
+{
+       update_graphs_from_proxy (user_data, proxy);
+}
+
 static gboolean
 tracker_extract_decorator_initable_init (GInitable     *initable,
                                          GCancellable  *cancellable,
@@ -488,6 +515,23 @@ tracker_extract_decorator_initable_init (GInitable     *initable,
                goto out;
        }
 
+       priv->index_proxy = g_dbus_proxy_new_sync (conn,
+                                                  G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+                                                  NULL,
+                                                  "org.freedesktop.Tracker3.Miner.Files.Index",
+                                                  "/org/freedesktop/Tracker3/Miner/Files/Index",
+                                                  "org.freedesktop.Tracker3.Miner.Files.Index",
+                                                  cancellable,
+                                                  error);
+       if (!priv->index_proxy) {
+               ret = FALSE;
+               goto out;
+       }
+
+       g_signal_connect (priv->index_proxy, "g-properties-changed",
+                         G_CALLBACK (proxy_properties_changed_cb), decorator);
+       update_graphs_from_proxy (decorator, priv->index_proxy);
+
        /* Chainup to parent's init last, to have a chance to export our
         * DBus interface before RequestName returns. Otherwise our iface
         * won't be ready by the time the tracker-extract appear on the bus. */