com.google.cloud.spanner

Interface InstanceAdminClient

public interface InstanceAdminClient

Client to do admin operations on Cloud Spanner Instance and Instance Configs.

Method Summary

Modifier and Type	Method and Description
OperationFuture<Instance,com.google.spanner.admin.instance.v1.CreateInstanceMetadata>	createInstance(InstanceInfo instance) Creates an instance and begins preparing it to begin serving.
void	deleteInstance(String instanceId) Deletes an instance.
Instance	getInstance(String instanceId) Gets an instance.
InstanceConfig	getInstanceConfig(String configId) Gets an instance config.
Page<InstanceConfig>	listInstanceConfigs(Options.ListOption... options) Lists the supported instance configs for current project.
Page<Instance>	listInstances(Options.ListOption... options) Lists the instances.
Instance.Builder	newInstanceBuilder(InstanceId id) Returns a builder for Instance object with the given id.
OperationFuture<Instance,com.google.spanner.admin.instance.v1.UpdateInstanceMetadata>	updateInstance(InstanceInfo instance, InstanceInfo.InstanceField... fieldsToUpdate) Updates an instance, and begins allocating or releasing resources as requested.

Method Detail

getInstanceConfig

InstanceConfig getInstanceConfig(String configId)
                          throws SpannerException

Gets an instance config.

Throws:

SpannerException

listInstanceConfigs

Page<InstanceConfig> listInstanceConfigs(Options.ListOption... options)
                                  throws SpannerException

Lists the supported instance configs for current project.

Throws:

SpannerException

createInstance

OperationFuture<Instance,com.google.spanner.admin.instance.v1.CreateInstanceMetadata> createInstance(InstanceInfo instance)
                                                                                              throws SpannerException

Creates an instance and begins preparing it to begin serving. The returned Operation can be used to track the progress of preparing the new instance. The instance name is assigned by the caller. If the named instance already exists, a SpannerException is thrown. Immediately upon completion of this request:

• The instance is readable via the API, with all requested attributes but no allocated resources.
• Its state is CREATING.

Until completion of the returned operation:

• Cancelling the operation renders the instance immediately unreadable via the API.
• The instance can be deleted.
• All other attempts to modify the instance are rejected.

Upon completion of the returned operation:

• Billing for all successfully-allocated resources begins (some types may have lower than the requested levels).
• Databases can be created in the instance.
• The instance's allocated resource levels are readable via the

 final String instanceId = my_instance_id;
 final String configId = my_config_id;
 final String clientProject = my_client_project;

 Operation<Instance, CreateInstanceMetadata> op =
     instanceAdminClient.createInstance(InstanceInfo
         .newBuilder(InstanceId.of(clientProject, instanceId))
         .setInstanceConfigId(InstanceConfigId.of(clientProject, configId))
         .setDisplayName(instanceId)
         .setNodeCount(1)
         .build());
 op.waitFor();
 

Throws:

SpannerException

getInstance

Instance getInstance(String instanceId)
              throws SpannerException

Gets an instance.

Throws:

SpannerException

listInstances

Page<Instance> listInstances(Options.ListOption... options)
                      throws SpannerException

Lists the instances.

Parameters:

options - Options to control the instances returned. It also supports Options.filter(String) option. The fields eligible for filtering are:

• name
• display_name
• labels.key where key is the name of a label

 List<Instance> instances =
     Lists.newArrayList(
         instanceAdminClient.listInstances(Options.pageSize(1)).iterateAll());
 

Throws:

SpannerException

deleteInstance

void deleteInstance(String instanceId)
             throws SpannerException

Deletes an instance.

Throws:

SpannerException

updateInstance

OperationFuture<Instance,com.google.spanner.admin.instance.v1.UpdateInstanceMetadata> updateInstance(InstanceInfo instance,
                                                                                                     InstanceInfo.InstanceField... fieldsToUpdate)

Updates an instance, and begins allocating or releasing resources as requested. The returned Operation can be used to track the progress of updating the instance. If the named instance does not exist, throws SpannerException.

Immediately upon completion of this request:

• For resource types for which a decrease in the instance's allocation has been requested, billing is based on the newly-requested level.

Until completion of the returned operation:

• Cancelling the operation sets its metadata's [cancel_time][UpdateInstanceMetadata.cancel_time], and begins restoring resources to their pre-request values. The operation is guaranteed to succeed at undoing all resource changes, after which point it terminates with a `CANCELLED` status.
• All other attempts to modify the instance are rejected.
• Reading the instance via the API continues to give the pre-request resource levels.

Upon completion of the returned operation:

• Billing begins for all successfully-allocated resources (some types may have lower than the requested levels).
• All newly-reserved resources are available for serving the instance's tables.
• The instance's new resource levels are readable via the API.

 Instance instance = my_instance;
 final String clientProject = my_client_project;
 final String instanceId = my_instance_id;

 final String newDisplayName = my_display_name;

 InstanceInfo toUpdate =
     InstanceInfo.newBuilder(InstanceId.of(clientProject, instanceId))
         .setDisplayName(newDisplayName)
         .setNodeCount(instance.getNodeCount() + 1)
         .build();
 // Only update display name
 Operation<Instance, UpdateInstanceMetadata> op =
     instanceAdminClient.updateInstance(toUpdate, InstanceInfo.InstanceField.DISPLAY_NAME);
 op.waitFor().getResult();
 

newInstanceBuilder

Instance.Builder newInstanceBuilder(InstanceId id)

Returns a builder for Instance object with the given id.