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/*
* Copyright (C) 2009, Nokia
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*
* Author: Philip Van Hoof <philip@codeminded.be>
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <sqlite3.h>
#include <libtracker-data/tracker-ontology.h>
#include <libtracker-data/tracker-ontologies.h>
#include <libtracker-data/tracker-db-manager.h>
#include <libtracker-data/tracker-db-interface-sqlite.h>
#include "tracker-db-backup.h"
#define TRACKER_DB_BACKUP_META_FILENAME_T "meta-backup.db.tmp"
typedef struct {
GFile *destination;
GFile *file;
TrackerDBBackupFinished callback;
gpointer user_data;
GDestroyNotify destroy;
GError *error;
} BackupInfo;
GQuark
tracker_db_backup_error_quark (void)
{
return g_quark_from_static_string ("tracker-db-backup-error-quark");
}
static gboolean
perform_callback (gpointer user_data)
{
BackupInfo *info = user_data;
if (info->callback) {
info->callback (info->error, info->user_data);
}
return FALSE;
}
static void
backup_info_free (gpointer user_data)
{
BackupInfo *info = user_data;
if (info->destination) {
g_object_unref (info->destination);
}
if (info->file) {
g_object_unref (info->file);
}
if (info->destroy) {
info->destroy (info->user_data);
}
g_clear_error (&info->error);
g_slice_free (BackupInfo, info);
}
static void
backup_job (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
BackupInfo *info = task_data;
GFile *parent_file, *temp_file;
gchar *temp_path, *src_path;
sqlite3 *src_db = NULL;
sqlite3 *temp_db = NULL;
sqlite3_backup *backup = NULL;
src_path = g_file_get_path (info->file);
parent_file = g_file_get_parent (info->destination);
temp_file = g_file_get_child (parent_file, TRACKER_DB_BACKUP_META_FILENAME_T);
g_file_delete (temp_file, NULL, NULL);
temp_path = g_file_get_path (temp_file);
if (sqlite3_open_v2 (src_path, &src_db, SQLITE_OPEN_READONLY, NULL) != SQLITE_OK) {
g_set_error (&info->error, TRACKER_DB_BACKUP_ERROR, TRACKER_DB_BACKUP_ERROR_UNKNOWN,
"Could not open sqlite3 database:'%s'", src_path);
}
if (!info->error && sqlite3_open (temp_path, &temp_db) != SQLITE_OK) {
g_set_error (&info->error, TRACKER_DB_BACKUP_ERROR, TRACKER_DB_BACKUP_ERROR_UNKNOWN,
"Could not open sqlite3 database:'%s'", temp_path);
}
if (!info->error) {
backup = sqlite3_backup_init (temp_db, "main", src_db, "main");
if (!backup) {
g_set_error (&info->error, TRACKER_DB_BACKUP_ERROR, TRACKER_DB_BACKUP_ERROR_UNKNOWN,
"Unable to initialize sqlite3 backup from '%s' to '%s'", src_path, temp_path);
}
}
if (!info->error && sqlite3_backup_step (backup, -1) != SQLITE_DONE) {
g_set_error (&info->error, TRACKER_DB_BACKUP_ERROR, TRACKER_DB_BACKUP_ERROR_UNKNOWN,
"Unable to complete sqlite3 backup");
}
if (backup) {
if (sqlite3_backup_finish (backup) != SQLITE_OK) {
if (info->error) {
/* sqlite3_backup_finish can provide more detailed error message */
g_clear_error (&info->error);
}
g_set_error (&info->error,
TRACKER_DB_BACKUP_ERROR,
TRACKER_DB_BACKUP_ERROR_UNKNOWN,
"Unable to finish sqlite3 backup: %s",
sqlite3_errmsg (temp_db));
}
backup = NULL;
}
if (temp_db) {
sqlite3_close (temp_db);
temp_db = NULL;
}
if (src_db) {
sqlite3_close (src_db);
src_db = NULL;
}
if (!info->error) {
g_file_move (temp_file, info->destination,
G_FILE_COPY_OVERWRITE,
NULL, NULL, NULL,
&info->error);
}
g_free (src_path);
g_free (temp_path);
g_object_unref (temp_file);
g_object_unref (parent_file);
g_idle_add_full (G_PRIORITY_DEFAULT, perform_callback, info,
backup_info_free);
}
void
tracker_db_backup_save (GFile *destination,
GFile *file,
TrackerDBBackupFinished callback,
gpointer user_data,
GDestroyNotify destroy)
{
GTask *task;
BackupInfo *info;
info = g_slice_new0 (BackupInfo);
info->destination = g_object_ref (destination);
info->file = g_object_ref (file);
info->callback = callback;
info->user_data = user_data;
info->destroy = destroy;
task = g_task_new (NULL, NULL, NULL, NULL);
g_task_set_task_data (task, info, NULL);
g_task_run_in_thread (task, backup_job);
g_object_unref (task);
}
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