/*

 * libvirt-gconfig-domain-snapshot.c: libvirt domain snapshot configuration

 *

 * Copyright (C) 2008 Daniel P. Berrange

 * Copyright (C) 2010-2013 Red Hat, Inc.

 *

 * 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, see

 * <http://www.gnu.org/licenses/>.

 *

 * Author: Daniel P. Berrange <berrange@redhat.com>

 *         Christophe Fergeau <cfergeau@redhat.com>

 */

#include <config.h>

#include "libvirt-gconfig/libvirt-gconfig.h"

#include "libvirt-gconfig/libvirt-gconfig-private.h"

#define GVIR_CONFIG_DOMAIN_SNAPSHOT_GET_PRIVATE(obj)                         \

        (G_TYPE_INSTANCE_GET_PRIVATE((obj), GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT, GVirConfigDomainSnapshotPrivate))

struct _GVirConfigDomainSnapshotPrivate

{

    gboolean unused;

};

G_DEFINE_TYPE_WITH_PRIVATE(GVirConfigDomainSnapshot, gvir_config_domain_snapshot, GVIR_CONFIG_TYPE_OBJECT);

static void gvir_config_domain_snapshot_class_init(GVirConfigDomainSnapshotClass *klass G_GNUC_UNUSED)

{

}

static void gvir_config_domain_snapshot_init(GVirConfigDomainSnapshot *snapshot)

{

    snapshot->priv = GVIR_CONFIG_DOMAIN_SNAPSHOT_GET_PRIVATE(snapshot);

}

GVirConfigDomainSnapshot *gvir_config_domain_snapshot_new(void)

{

    GVirConfigObject *object;

    object = gvir_config_object_new(GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT,

                                    "domainsnapshot",

                                    DATADIR "/libvirt/schemas/domainsnapshot.rng");

    return GVIR_CONFIG_DOMAIN_SNAPSHOT(object);

}

GVirConfigDomainSnapshot *gvir_config_domain_snapshot_new_from_xml(const gchar *xml,

                                                                   GError **error)

{

    GVirConfigObject *object;

    object = gvir_config_object_new_from_xml(GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT,

                                    "domainsnapshot",

                                    DATADIR "/libvirt/schemas/domainsnapshot.rng",

                                    xml, error);

    return GVIR_CONFIG_DOMAIN_SNAPSHOT(object);

}

const char *gvir_config_domain_snapshot_get_name(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    return gvir_config_object_get_node_content(GVIR_CONFIG_OBJECT(snapshot),

                                               "name");

}

void gvir_config_domain_snapshot_set_name(GVirConfigDomainSnapshot *snapshot,

                                          const char *name)

{

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    gvir_config_object_set_node_content(GVIR_CONFIG_OBJECT(snapshot),

                                        "name", name);

}

const char *gvir_config_domain_snapshot_get_description(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    return gvir_config_object_get_node_content(GVIR_CONFIG_OBJECT(snapshot),

                                               "description");

}

void gvir_config_domain_snapshot_set_description(GVirConfigDomainSnapshot *snapshot,

                                                 const char *description)

{

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    gvir_config_object_set_node_content(GVIR_CONFIG_OBJECT(snapshot),

                                        "description", description);

}

GVirConfigDomainSnapshotMemoryState gvir_config_domain_snapshot_get_memory_state(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot),

                         GVIR_CONFIG_DOMAIN_SNAPSHOT_MEMORY_STATE_NONE);

    return gvir_config_object_get_attribute_genum(GVIR_CONFIG_OBJECT(snapshot),

                                                  "memory", "snapshot",

                                                  GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT_MEMORY_STATE,

                                                  GVIR_CONFIG_DOMAIN_SNAPSHOT_MEMORY_STATE_NONE);

}

void gvir_config_domain_snapshot_set_memory_state(GVirConfigDomainSnapshot *snapshot,

                                                  GVirConfigDomainSnapshotMemoryState state)

{

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    gvir_config_object_add_child_with_attribute_enum(GVIR_CONFIG_OBJECT(snapshot),

                                                     "memory", "snapshot",

                                                     GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT_MEMORY_STATE,

                                                     state);

}

const char *gvir_config_domain_snapshot_get_memory_file(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    return gvir_config_object_get_attribute(GVIR_CONFIG_OBJECT(snapshot),

                                            "memory", "file");

}

void gvir_config_domain_snapshot_set_memory_file(GVirConfigDomainSnapshot *snapshot,

                                                 const char *filename)

{

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    gvir_config_object_add_child_with_attribute(GVIR_CONFIG_OBJECT(snapshot),

                                                "memory", "file", filename);

}

time_t gvir_config_domain_snapshot_get_creation_time(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), 0);

    return gvir_config_object_get_node_content_uint64(GVIR_CONFIG_OBJECT(snapshot),

                                                      "creationTime");

}

GVirConfigDomainSnapshotDomainState gvir_config_domain_snapshot_get_state(GVirConfigDomainSnapshot *snapshot)

{

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot),

                         GVIR_CONFIG_DOMAIN_SNAPSHOT_DOMAIN_STATE_NOSTATE);

    return gvir_config_object_get_node_content_genum(GVIR_CONFIG_OBJECT(snapshot),

                                                     "state",

                                                     GVIR_CONFIG_TYPE_DOMAIN_SNAPSHOT_DOMAIN_STATE,

                                                     GVIR_CONFIG_DOMAIN_SNAPSHOT_DOMAIN_STATE_NOSTATE);

}

const char *gvir_config_domain_snapshot_get_parent(GVirConfigDomainSnapshot *snapshot)

{

    GVirConfigObject *parent;

    const char *parent_name;

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    parent = gvir_config_object_get_child(GVIR_CONFIG_OBJECT(snapshot),

                                          "parent");

    if (parent == NULL)

        return NULL;

    parent_name = gvir_config_object_get_node_content(parent, "name");

    g_object_unref(G_OBJECT(parent));

    return parent_name;

}

/**

 * gvir_config_domain_snapshot_get_domain:

 * @snapshot: a #GVirConfigDomainSnapshot

 *

 * Gets the configuration of the domain @snapshot is a snapshot of.

 *

 * Returns: (transfer full): A #GVirConfigDomain. The returned object

 * should be unreffed with g_object_unref() when no longer needed.

 */

GVirConfigDomain *gvir_config_domain_snapshot_get_domain(GVirConfigDomainSnapshot *snapshot)

{

    GVirConfigObject *domain;

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    domain = gvir_config_object_get_child_with_type(GVIR_CONFIG_OBJECT(snapshot),

                                                    "domain",

                                                    GVIR_CONFIG_TYPE_DOMAIN);

    return GVIR_CONFIG_DOMAIN(domain);

}

/**

 * gvir_config_domain_snapshot_set_disks:

 * @snapshot: a #GVirConfigDomainSnapshot

 * @disks: (in) (element-type LibvirtGConfig.DomainSnapshotDisk):

 */

void gvir_config_domain_snapshot_set_disks(GVirConfigDomainSnapshot *snapshot,

                                           GList *disks)

{

    GVirConfigObject *disks_node;

    GList *it;

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    if (disks == NULL) {

        gvir_config_object_delete_children(GVIR_CONFIG_OBJECT(snapshot),

                                           "disks",

                                           NULL);

        return;

    }

    disks_node = gvir_config_object_new(GVIR_CONFIG_TYPE_OBJECT,

                                        "disks", NULL);

    for (it = disks; it != NULL; it = it->next) {

        if (!GVIR_CONFIG_IS_DOMAIN_SNAPSHOT_DISK(it->data)) {

            g_warn_if_reached();

            continue;

        }

        gvir_config_object_attach_add(disks_node,

                                      GVIR_CONFIG_OBJECT(it->data));

    }

    gvir_config_object_attach_replace(GVIR_CONFIG_OBJECT(snapshot),

                                      "disks",

                                      disks_node);

    g_object_unref(G_OBJECT(disks_node));

}

void gvir_config_domain_snapshot_add_disk(GVirConfigDomainSnapshot *snapshot,

                                          GVirConfigDomainSnapshotDisk *disk)

{

    GVirConfigObject *disks_node;

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot));

    g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT_DISK(disk));

    disks_node = gvir_config_object_add_child(GVIR_CONFIG_OBJECT(snapshot),

                                              "disks");

    gvir_config_object_attach_add(disks_node, GVIR_CONFIG_OBJECT(disk));

    g_object_unref(G_OBJECT(disks_node));

}

struct GetDiskData {

    GVirConfigXmlDoc *doc;

    GList *disks;

};

static gboolean get_disk(xmlNodePtr node, gpointer opaque)

{

    struct GetDiskData* data = (struct GetDiskData*)opaque;

    GVirConfigDomainSnapshotDisk *disk;

    disk = gvir_config_domain_snapshot_disk_new_from_tree(data->doc, node);

    if (disk != NULL)

        data->disks = g_list_prepend(data->disks, disk);

    else

        g_debug("Failed to parse %s node", node->name);

    return TRUE;

}

/**

 * gvir_config_domain_snapshot_get_disks:

 * @snapshot: a #GVirConfigDomainSnapshot

 *

 * Gets the list of disks attached to @snapshot.  The returned list should

 * be freed with g_list_free(), after its elements have been unreffed with

 * g_object_unref().

 *

 * Returns: (element-type LibvirtGConfig.DomainSnapshotDisk) (transfer full):

 * a newly allocated #GList of #GVirConfigDomainSnapshotDisk.

 */

GList *gvir_config_domain_snapshot_get_disks(GVirConfigDomainSnapshot *snapshot)

{

    struct GetDiskData data;

    g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_SNAPSHOT(snapshot), NULL);

    g_object_get(G_OBJECT(snapshot), "doc", &data.doc, NULL);

    data.disks = NULL;

    gvir_config_object_foreach_child(GVIR_CONFIG_OBJECT(snapshot), "disks",

                                     get_disk, &data);

    if (data.doc != NULL) {

        g_object_unref(G_OBJECT(data.doc));

    }

    return g_list_reverse(data.disks);

}