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VBS Java SDK Demo

Creating a VBS Backup

You can create a VBS backup using OpenStack4j based on the following code. After the VBS backup is created, it will be displayed in the VBS list on the VBS console.

public static void createBackup() {
    AsyncVolumeBackupCreate vbc = Builders.asyncVolumeBackupCreate()
            .name(backupName)
            .volumeId(volume.getId())
            .build();
    AsyncVolumeBackupJob job = osclient.blockStorage().asyncBackups().create(vbc);
    Assert.assertNotNull(job.getId());
    backupJobId = job.getId();
}
Table 1 Request parameter description

Parameter

Mandatory

Type

Description

backup

Yes

dict

Specifies the backup to be created.

volume_id

Yes

string

Specifies the ID of the disk to be backed up.

snapshot_id

No

string

Specifies the snapshot ID of the disk to be backed up.

name

Yes

string

Specifies the backup name. The value is a string of 1 to 64 characters consisting of digits, letters, underscores (_), and hyphens (-).

description

No

string

Provides supplementary information about the backup. The value is a string of 1 to 64 characters and cannot contain the less-than sign (<) or greater-than sign (>).

Querying VBS Backup Details

You can query the backup list and obtain the backup details using OpenStack4j based on the following code:

public static void queryNativeBackupsDetail(){
    // Without specifying the search criteria
    List<? extends VolumeBackup> list = osclient.blockStorage().backups().list(true);
    Assert.assertNotEquals(list.size(), 0);

    // With the search criteria specified
    HashMap<String, String> filter = new HashMap<>();
    filter.put("name", backupName);
    List<? extends VolumeBackup> list2 = osclient.blockStorage().backups().list(true, filter);
    for (VolumeBackup backup: list2) {
        Assert.assertEquals(backup.getName(), backupName);
    }
}
Table 2 Request parameter description

Parameter

Mandatory

Type

Description

name

No

string

Specifies the name of the backup to be queried. This parameter is used to query the backups whose names are specified character strings.

status

No

string

Specifies the status of the backup to be queried. This parameter is used to query the backups in a specified state. The value can be available, error, restoring, creating, deleting, or error_deleting.

offset

No

int

Specifies the offset of the queried details.

limit

No

int

Specifies the maximum number of query results that can be returned.

volume_id

No

string

Specifies the disk ID of the backup to be queried. This parameter is used to query the backups for specific disks.

Restoring a Disk Using a VBS Backup

You can restore a disk from a VBS backup using OpenStack4j based on the following code:

public static void restoreBackup() {
    AsyncVolumeBackupJob job = osclient.blockStorage()
            .asyncBackups()
            .restore(backupId, volume.getId());
    Assert.assertNotNull(job.getId());
}
Table 3 Request parameter description

Parameter

Mandatory

Type

Description

restore

Yes

dict

Specifies the operation of restoring the disk using a backup.

backup_id

Yes

string

Specifies the ID of the backup used to restore a disk.

volume_id

Yes

string

Specifies the ID of the disk to be restored.

Deleting a Backup

You can delete a backup using OpenStack4j based on the following code:

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public static void deleteNativeBackup() 
{
    ActionResponse delete = osclient.blockStorage().backups().delete(backupId);
    Assert.assertEquals(delete.isSuccess(), true);
}
Table 4 Request parameter description

Parameter

Mandatory

Type

Description

tenant_id

Yes

string

Specifies the ID of the tenant.

backup_id

Yes

string

Specifies the ID of the backup used to restore a disk.

Creating a Backup Policy

You can create a backup policy using OpenStack4j based on the following code:

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public static void createPolicy() 
{
    // Create a scheduled policy first.
    VBSVolumeBackupScheduledPolicy scheduledPolicy = VBSVolumeBackupScheduledPolicy.builder()
            .frequency(10)
            .maxBackupAmount(10)
            .retainFirstBackupOfCurrentMonth(true)
            .startTime("01:00")
            .status(VolumeBackupPolicy.VolumeBackupPolicyStatus.OFF)
            .build();
    Assert.assertNotNull(scheduledPolicy);

    // Create a backup policy object.
    VolumeBackupPolicy create = VBSVolumeBackupPolicy.builder()
            .name(policyName)
            .scheduledPolicy(scheduledPolicy)
            .build();
    VolumeBackupPolicy policy = osclient.blockStorage().policies().create(create);
    Assert.assertNotNull(policy.getId());
Table 5 Request parameter description

Parameter

Mandatory

Type

Description

backup_policy_name

Yes

string

Specifies the backup policy name.

The name is a string of 1 to 64 characters consisting of letters, digits, underscores (_), and hyphens (-). It cannot start with default.

scheduled_policy

Yes

dict

Specifies details about the scheduling policy.

start_time

Yes

string

Specifies the backup start time, which needs to be converted into the local UTC time (on the hour only).

The value is in HH:mm format.

frequency

No

integer

Specifies the backup interval (1 to 14 days). Select either this parameter or week_frequency. If you select both, this parameter is used.

week_frequency

No

list<dict>

Specifies on which days of each week backup jobs are executed. The value can be one or more of the following:

SUN, MON, TUE, WED, THU, FRI, SAT

rentention_num

No

integer

Specifies the retained number (minimum: 2) of backups. Select either this parameter or rentention_day. If you select both, this parameter is used.

rentention_day

No

integer

Specifies how many days backups are retained.

remain_first_backup_of_curMonth

Yes

string

Specifies whether to retain the first backup in the current month. The value can be Y or N.

status

Yes

string

Specifies the backup policy status. The value can be ON or OFF.

Deleting a Backup Policy

You can delete a backup policy using OpenStack4j based on the following code:

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public static void deletePolicy() {
    osclient.blockStorage().policies().delete(policyId);
    List<? extends VolumeBackupPolicy> policies = osclient.blockStorage().policies().list();
    boolean isSuccess = true;
    for (VolumeBackupPolicy policy:
            policies) {
        if (policy.getId().equals(policyId)) {
            isSuccess = false;
            break;
        }
    }
    Assert.assertEquals(isSuccess, true);
}
Table 6 Request parameter description

Parameter

Mandatory

Type

Description

tenant_id

Yes

string

Specifies the ID of the tenant.

policy_id

Yes

string

Specifies the ID of the policy.

Querying Backup Policies

You can query backup policies using OpenStack4j based on the following code:

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public static void queryPolicy() {
    List<? extends VolumeBackupPolicy> policies = osclient.blockStorage().policies().list();
    boolean isSuccess = false;
    for (VolumeBackupPolicy policy:
         policies) {
        if (policy.getName().equals(policyName)) {
            isSuccess = true;
            policyId = policy.getId();
            break;
        }
    }
    Assert.assertEquals(isSuccess, true);
}
Parent topic: Java