[gnome-software/wip/temp/ubuntu-xenial-rebased: 187/326] Allow plugins to conflict with each other

[Iain Lane <iainl src gnome org>]

commit 498d791770fa56232ee23963f095c2a1f72b4198
Author: Richard Hughes <richard hughsie com>
Date:   Thu Mar 24 20:14:39 2016 +0000

    Allow plugins to conflict with each other
    
    The plugin defining the conflict is prefered, and if mutual then the lower
    priority plugin is automatically disabled.

 src/plugins/gs-plugin-ostree.c |  162 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 162 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-ostree.c b/src/plugins/gs-plugin-ostree.c
new file mode 100644
index 0000000..b923733
--- /dev/null
+++ b/src/plugins/gs-plugin-ostree.c
@@ -0,0 +1,162 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2016 Richard Hughes <richard hughsie com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <config.h>
+
+#include <ostree.h>
+#include <gio/gio.h>
+#include <glib/gstdio.h>
+
+#include <gs-plugin.h>
+
+#include "gs-utils.h"
+
+struct GsPluginPrivate {
+       OstreeRepo              *ostree_repo;
+};
+
+/**
+ * gs_plugin_get_name:
+ */
+const gchar *
+gs_plugin_get_name (void)
+{
+       return "ostree";
+}
+
+/**
+ * gs_plugin_initialize:
+ */
+void
+gs_plugin_initialize (GsPlugin *plugin)
+{
+       plugin->priv = GS_PLUGIN_GET_PRIVATE (GsPluginPrivate);
+
+       /* only works on OSTree */
+       if (!g_file_test ("/run/ostree-booted", G_FILE_TEST_EXISTS)) {
+               gs_plugin_set_enabled (plugin, FALSE);
+               return;
+       }
+}
+
+/**
+ * gs_plugin_get_conflicts:
+ */
+const gchar **
+gs_plugin_get_conflicts (GsPlugin *plugin)
+{
+       static const gchar *deps[] = {
+               "packagekit",
+               "packagekit-history",
+               "packagekit-offline",
+               "packagekit-origin",
+               "packagekit-proxy",
+               "packagekit-refine",
+               "packagekit-refresh",
+               "systemd-updates",
+               NULL };
+       return deps;
+}
+
+/**
+ * gs_plugin_destroy:
+ */
+void
+gs_plugin_destroy (GsPlugin *plugin)
+{
+       if (plugin->priv->ostree_repo != NULL)
+               g_object_unref (plugin->priv->ostree_repo);
+}
+
+/**
+ * gs_plugin_startup:
+ */
+static gboolean
+gs_plugin_startup (GsPlugin *plugin, GCancellable *cancellable, GError **error)
+{
+       /* already started */
+       if (plugin->priv->ostree_repo != NULL)
+               return TRUE;
+
+       /* open */
+       plugin->priv->ostree_repo = ostree_repo_new_default ();
+       if (!ostree_repo_open (plugin->priv->ostree_repo, cancellable, error))
+               return FALSE;
+       return TRUE;
+}
+
+/**
+ * gs_plugin_add_sources:
+ */
+gboolean
+gs_plugin_add_sources (GsPlugin *plugin,
+                      GList **list,
+                      GCancellable *cancellable,
+                      GError **error)
+{
+       guint i;
+       g_auto(GStrv) names = NULL;
+
+       /* set up plugin */
+       if (!gs_plugin_startup (plugin, cancellable, error))
+               return FALSE;
+
+       /* get all remotes */
+       names = ostree_repo_remote_list (plugin->priv->ostree_repo, NULL);
+       if (names == NULL)
+               return TRUE;
+       for (i = 0; names[i] != NULL; i++) {
+               g_autofree gchar *url = NULL;
+               g_autoptr(GsApp) app = NULL;
+
+               /* get info */
+               if (!ostree_repo_remote_get_url (plugin->priv->ostree_repo,
+                                                names[i], &url, error))
+                       return FALSE;
+
+               /* create app */
+               app = gs_app_new (names[i]);
+               gs_app_set_management_plugin (app, "ostree");
+               gs_app_set_kind (app, AS_APP_KIND_SOURCE);
+               gs_app_set_state (app, AS_APP_STATE_INSTALLED);
+               gs_app_set_url (app, AS_URL_KIND_HOMEPAGE, url);
+               gs_app_set_name (app, GS_APP_QUALITY_LOWEST, names[i]);
+       }
+
+       return TRUE;
+}
+
+/**
+ * gs_plugin_refresh:
+ */
+gboolean
+gs_plugin_refresh (GsPlugin *plugin,
+                  guint cache_age,
+                  GsPluginRefreshFlags flags,
+                  GCancellable *cancellable,
+                  GError **error)
+{
+       /* set up plugin */
+       if (!gs_plugin_startup (plugin, cancellable, error))
+               return FALSE;
+
+       return TRUE;
+}