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/*
* Copyright (C) 2008, Nokia <ivan.frade@nokia.com>
*
* This library 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 library 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 library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <gio/gio.h>
#include "tracker-writeback.h"
#include "tracker-writeback-listener.h"
#include "tracker-writeback-dispatcher.h"
/* Listener listens for the Writeback signal coming from the store, it performs
* a few queries to get a set of changed values, and pushes the writeback task
* to miner-fs's queues. */
static TrackerWritebackListener *listener = NULL;
/* That task in miner-fs's queue callsback to the dispatcher. The dispatcher
* calls the external tracker-writeback process which does the actual write */
static TrackerWritebackDispatcher *dispatcher = NULL;
static gboolean enabled = FALSE;
static TrackerMinerFiles *gminer_files = NULL;
static TrackerConfig *gconfig = NULL;
static guint gsig = 0;
static void
initialize_all (TrackerMinerFiles *miner_files,
GError **error)
{
GError *internal_error = NULL;
listener = tracker_writeback_listener_new (miner_files, &internal_error);
if (!internal_error) {
dispatcher = tracker_writeback_dispatcher_new (miner_files, &internal_error);
}
if (internal_error) {
if (listener) {
g_object_unref (listener);
listener = NULL;
}
g_propagate_error (error, internal_error);
}
enabled = TRUE;
}
static void
shutdown_writeback (void)
{
if (listener) {
g_object_unref (listener);
listener = NULL;
}
if (dispatcher) {
g_object_unref (dispatcher);
dispatcher = NULL;
}
enabled = FALSE;
}
static void
enable_writeback_cb (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
if (enabled && !tracker_config_get_enable_monitors (gconfig)) {
shutdown_writeback ();
}
if (!enabled && tracker_config_get_enable_monitors (gconfig)) {
GError *error = NULL;
initialize_all (gminer_files, &error);
if (error) {
g_critical ("Can't reenable Writeback: '%s'", error->message);
g_error_free (error);
}
}
}
void
tracker_writeback_init (TrackerMinerFiles *miner_files,
TrackerConfig *config,
GError **error)
{
GError *internal_error = NULL;
if (tracker_config_get_enable_monitors (config)) {
initialize_all (miner_files, &internal_error);
}
if (internal_error) {
g_propagate_error (error, internal_error);
} else {
gminer_files = g_object_ref (miner_files);
gconfig = g_object_ref (config);
gsig = g_signal_connect (gconfig, "notify::enable-writeback",
G_CALLBACK (enable_writeback_cb),
NULL);
}
}
void
tracker_writeback_shutdown (void)
{
shutdown_writeback ();
if (gconfig) {
if (gsig) {
g_signal_handler_disconnect (gconfig, gsig);
}
g_object_unref (gconfig);
}
if (gminer_files) {
g_object_unref (gminer_files);
}
}
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