Cloud Spanner Client - Class Backup (2.0.1-RC1)

Reference documentation and code samples for the Cloud Spanner Client class Backup.

Represents a Cloud Spanner Backup.

Example:

 use Google\Cloud\Spanner\SpannerClient;

$spanner = new SpannerClient(['projectId' => 'my-project']);

$backup = $spanner->instance('my-instance')->backup('my-backup'); 

Namespace

Google \ Cloud \ Spanner

Methods

__construct

Create an object representing a Backup.

Parameters
Name
Description
databaseAdminClient
Admin\Database\V1\Client\DatabaseAdminClient

The database admin client to make backup RPC calls.

serializer
Serializer

The serializer instance to encode/decode messages.

instance
Instance

The instance in which the backup exists.

projectId
string

The project ID.

name
string

The backup name or ID.

options
array

[Optional] { Backup options.

 @type array $backup The backup info. 

}

create

Create a Cloud Spanner backup for a database.

Example:

 $operation = $backup->create('my-database', new \DateTime('+7 hours')); 
Parameters
Name
Description
database
string

The name or id of the database that this backup is for.

expireTime
DateTimeInterface

​The expiration time of the backup, with microseconds granularity that must be at least 6 hours and at most 366 days. Once the expireTime has passed, the backup is eligible to be automatically deleted by Cloud Spanner.

options
array

Configuration Options.

↳ versionTime
DateTimeInterface

The version time for the externally consistent copy of the database. If not present, it will be the same as the create time of the backup.

createCopy

Create a copy of an existing backup in Cloud Spanner.

Example:

 $sourceInstance = $spanner->instance('source-instance-id');
$destInstance = $spanner->instance('destination-instance-id');
$sourceBackup = $sourceInstance->backup('source-backup-id');
$destBackup = $destInstance->backup('new-backup-id');

$operation = $sourceBackup->createCopy($destBackup, new \DateTime('+7 hours')); 
Parameters
Name
Description
newBackup
Backup

The backup object that needs to be created as a copy.

expireTime
DateTimeInterface

The expiration time of the backup, with microseconds granularity that must be at least 6 hours and at most 366 days. Once the expireTime has passed, the backup is eligible to be automatically deleted by Cloud Spanner.

options
array

Configuration Options.

delete

Marks this backup for deletion.

Example:

 $backup->delete(); 
Parameter
Name
Description
options
array

[optional] Configuration options.

Returns
Type
Description
void

exists

Tests whether this backup exists.

This method sends a service call.

Example:

 if ($backup->exists()) {
    echo 'Backup exists!';
} 
Parameter
Name
Description
options
array

[optional] Configuration options.

Returns
Type
Description
bool

info

Get info of a Cloud Spanner backup from cache or request.

Example:

 $info = $backup->info(); 
Parameter
Name
Description
options
array

[optional] Configuration options.

Returns
Type
Description
array

name

Return the backup name.

Example:

 $name = $backup->name(); 
Returns
Type
Description
string

reload

Reload the backup info from the Cloud Spanner API.

Example:

 $info = $backup->reload(); 
Parameter
Name
Description
options
array

[optional] Configuration options.

Returns
Type
Description
array

state

Return the backup state.

When backups are created, they may take some time before they are ready for use. This method allows for checking whether a backup is ready. Note that this value is cached within the class instance, so if you are polling it, first call Backup::reload() to refresh the cached value.

Example:

 use Google\Cloud\Spanner\Backup;

if ($backup->state() === Backup::STATE_READY) {
    echo 'Backup is ready!';
} 
Parameter
Name
Description
options
array

[optional] Configuration options.

Returns
Type
Description
int|null

updateExpireTime

Update the expire time of this backup.

Example:

 $info = $backup->updateExpireTime(new \DateTime("+ 7 hours")); 
Parameters
Name
Description
newTimestamp
DateTimeInterface

New expire time.

options
array

[optional] Configuration options.

Returns
Type
Description
array

resumeOperation

Resume a Long Running Operation

Example:

 $operation = $backup->resumeOperation($operationName); 
Parameters
Name
Description
operationName
string

The Long Running Operation name.

options
array

longRunningOperations

List long running operations.

Example:

 $operations = $backup->longRunningOperations(); 
Parameters
Name
Description
options
array

Configuration Options.

↳ name
string

The name of the operation collection.

↳ filter
string

The standard list filter.

↳ pageSize
int

Maximum number of results to return per request.

↳ resultLimit
int

Limit the number of results returned in total. Defaults to 0 (return all results).

↳ pageToken
string

A previously-returned page token used to resume the loading of results from a specific point.

Constants

STATE_READY

  Value: \Google\Cloud\Spanner\Admin\Database\V1\Backup\State::READY 
 

STATE_CREATING

  Value: \Google\Cloud\Spanner\Admin\Database\V1\Backup\State::CREATING 
 
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