transaction object in place

1 files changed, 167 insertions, 0 deletions

diff --git a/src/apt-transaction.c b/src/apt-transaction.c
new file mode 100644
index 0000000..68e1f6b
--- /dev/null
+++ b/src/apt-transaction.c
@@ -0,0 +1,167 @@
+/*
+Copyright 2011 Canonical Ltd.
+
+Authors:
+    Conor Curran <conor.curran@canonical.com>
+
+This program is free software: you can redistribute it and/or modify it 
+under the terms of the GNU General Public License version 3, as published 
+by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful, but 
+WITHOUT ANY WARRANTY; without even the implied warranties of 
+MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
+PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along 
+with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <gio/gio.h>
+
+#include "apt-transaction.h"
+
+
+static void apt_transaction_on_properties_changed (GDBusProxy          *proxy,
+                                                   GVariant            *changed_properties,
+                                                   const gchar* const  *invalidated_properties,
+                                                   gpointer             user_data);
+
+static void apt_transaction_investigate (AptTransaction* self);
+static void apt_transaction_simulate_transaction_cb (GObject * obj,
+                                                     GAsyncResult * res,
+                                                     gpointer user_data);
+
+struct _AptTransaction
+{
+	GObject       parent_instance;
+	GDBusProxy *  proxy;    
+  gchar*        id;
+};
+
+G_DEFINE_TYPE (AptTransaction, apt_transaction, G_TYPE_OBJECT);
+
+static void
+apt_transaction_init (AptTransaction *self)
+{
+  self->proxy = NULL;
+  self->id = NULL;
+}
+
+static void
+apt_transaction_finalize (GObject *object)
+{
+	/* TODO: Add deinitalization code here */
+  AptTransaction* self = APT_TRANSACTION(object);
+  if (self->proxy != NULL){
+    g_object_unref (self->proxy);
+    self->proxy = NULL;
+  }    
+  g_free (self->id);
+	G_OBJECT_CLASS (apt_transaction_parent_class)->finalize (object);
+}
+
+static void
+apt_transaction_class_init (AptTransactionClass *klass)
+{
+	GObjectClass* object_class = G_OBJECT_CLASS (klass);
+	//GObjectClass* parent_class = G_OBJECT_CLASS (klass);
+	object_class->finalize = apt_transaction_finalize;
+}
+
+static void
+apt_transaction_investigate(AptTransaction* self)
+{
+  GError * error = NULL;
+
+  self->proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+                                               G_DBUS_PROXY_FLAGS_NONE,
+                                               NULL, /* GDBusInterfaceInfo */
+                                               "org.debian.apt",
+                                               self->id,
+                                               "org.debian.apt.transaction",
+                                               NULL, /* GCancellable */
+                                               &error);        
+  if (error != NULL) {
+    g_warning ("unable to fetch proxy for transaction object path %s", self->id);
+    g_error_free (error);
+    return;
+  }
+  g_debug ("connecting to the properties changed signal on the transaction object");
+  g_signal_connect (self->proxy,
+                    "g-properties-changed",
+                    G_CALLBACK (apt_transaction_on_properties_changed),
+                    self);    
+
+  g_debug ("calling simulate on the transaction object");
+  g_dbus_proxy_call (self->proxy,
+                     "Simulate",
+                     NULL,
+                     G_DBUS_CALL_FLAGS_NONE,
+                     -1,
+                     NULL,
+                     apt_transaction_simulate_transaction_cb,
+                     self);                                                                                        
+}
+
+static void
+apt_transaction_on_properties_changed (GDBusProxy          *proxy,
+                                       GVariant            *changed_properties,
+                                       const gchar* const  *invalidated_properties,
+                                       gpointer             user_data)
+{
+  if (g_variant_n_children (changed_properties) > 0)
+  {
+    GVariantIter *iter;
+    const gchar *key;
+    GVariant *value;
+
+    g_print (" *** Apt Transaction Properties Changed:\n");
+    g_variant_get (changed_properties,
+                   "a{sv}",
+                   &iter);
+    while (g_variant_iter_loop (iter, "{&sv}", &key, &value))
+    {
+      gchar *value_str;
+      value_str = g_variant_print (value, TRUE);
+      g_print ("      %s -> %s\n", key, value_str);
+      g_free (value_str);
+    }
+    g_variant_iter_free (iter);
+  }    
+}
+
+static void
+apt_transaction_simulate_transaction_cb (GObject * obj,
+                                         GAsyncResult * res,
+                                         gpointer user_data)
+{
+  g_debug ("Simulate return");
+  g_return_if_fail (APT_IS_TRANSACTION (user_data));
+  AptTransaction* self = APT_TRANSACTION (user_data);
+
+	GError * error = NULL;
+	GVariant * result;
+
+	result = g_dbus_proxy_call_finish(self->proxy, res, &error);
+
+	if (error != NULL) {
+    g_warning ("unable to complete the simulate call");
+    g_error_free (error);
+		return;
+	}
+  
+  g_debug ("simulate returned a %s",
+           g_variant_get_type_string (result));
+  
+}
+
+
+AptTransaction* apt_transaction_new (gchar* transaction_id)
+{
+  AptTransaction* tr = g_object_new (APT_TYPE_TRANSACTION, NULL);
+  tr->id = transaction_id;
+  g_debug ("Apt transaction new");
+  apt_transaction_investigate (tr);
+  return tr;
+}