REST Resource: projects.instances

Resource: Instance

An isolated set of Cloud Spanner resources on which databases can be hosted.

JSON representation 
{
  "name": string,
  "config": string,
  "displayName": string,
  "nodeCount": integer,
  "processingUnits": integer,
  "replicaComputeCapacity": [
    {
      object (ReplicaComputeCapacity)
    }
  ],
  "autoscalingConfig": {
    object (AutoscalingConfig)
  },
  "state": enum (State),
  "labels": {
    string: string,
    ...
  },
  "instanceType": enum (InstanceType),
  "endpointUris": [
    string
  ],
  "createTime": string,
  "updateTime": string,
  "freeInstanceMetadata": {
    object (FreeInstanceMetadata)
  },
  "edition": enum (Edition),
  "defaultBackupScheduleType": enum (DefaultBackupScheduleType)
}
Fields
name

string

Required. A unique identifier for the instance, which cannot be changed after the instance is created. Values are of the form projects/<project>/instances/[a-z][-a-z0-9]*[a-z0-9]. The final segment of the name must be between 2 and 64 characters in length.
config

string

Required. The name of the instance's configuration. Values are of the form projects/<project>/instanceConfigs/<configuration>. See also InstanceConfig and instanceConfigs.list.
displayName

string

Required. The descriptive name for this instance as it appears in UIs. Must be unique per project and between 4 and 30 characters in length.
nodeCount

integer

The number of nodes allocated to this instance. At most, one of either nodeCount or processingUnits should be present in the message.

Users can set the nodeCount field to specify the target number of nodes allocated to the instance.

If autoscaling is enabled, nodeCount is treated as an OUTPUT_ONLY field and reflects the current number of nodes allocated to the instance.

This might be zero in API responses for instances that are not yet in the READY state.

If the instance has varying node count across replicas (achieved by setting asymmetricAutoscalingOptions in the autoscaling configuration), the nodeCount set here is the maximum node count across all replicas.

For more information, see Compute capacity, nodes, and processing units.
processingUnits

integer

The number of processing units allocated to this instance. At most, one of either processingUnits or nodeCount should be present in the message.

Users can set the processingUnits field to specify the target number of processing units allocated to the instance.

If autoscaling is enabled, processingUnits is treated as an OUTPUT_ONLY field and reflects the current number of processing units allocated to the instance.

This might be zero in API responses for instances that are not yet in the READY state.

If the instance has varying processing units per replica (achieved by setting asymmetricAutoscalingOptions in the autoscaling configuration), the processingUnits set here is the maximum processing units across all replicas.

For more information, see Compute capacity, nodes and processing units.
replicaComputeCapacity[]

object (ReplicaComputeCapacity)

Output only. Lists the compute capacity per ReplicaSelection. A replica selection identifies a set of replicas with common properties. Replicas identified by a ReplicaSelection are scaled with the same compute capacity.
autoscalingConfig

object (AutoscalingConfig)

Optional. The autoscaling configuration. Autoscaling is enabled if this field is set. When autoscaling is enabled, nodeCount and processingUnits are treated as OUTPUT_ONLY fields and reflect the current compute capacity allocated to the instance.
state

enum (State)

Output only. The current instance state. For instances.create, the state must be either omitted or set to CREATING. For instances.patch, the state must be either omitted or set to READY.
labels

map (key: string, value: string)

Cloud Labels are a flexible and lightweight mechanism for organizing cloud resources into groups that reflect a customer's organizational needs and deployment strategies. Cloud Labels can be used to filter collections of resources. They can be used to control how resource metrics are aggregated. And they can be used as arguments to policy management rules (e.g. route, firewall, load balancing, etc.).

  • Label keys must be between 1 and 63 characters long and must conform to the following regular expression: [a-z][a-z0-9_-]{0,62}.
  • Label values must be between 0 and 63 characters long and must conform to the regular expression [a-z0-9_-]{0,63}.
  • No more than 64 labels can be associated with a given resource.

See https://goo.gl/xmQnxf for more information on and examples of labels.

If you plan to use labels in your own code, please note that additional characters may be allowed in the future. And so you are advised to use an internal label representation, such as JSON, which doesn't rely upon specific characters being disallowed. For example, representing labels as the string: name + "_" + value would prove problematic if we were to allow "_" in a future release.
instanceType

enum (InstanceType)

The InstanceType of the current instance.
endpointUris[]

string

Deprecated. This field is not populated.
createTime

string (Timestamp format)

Output only. The time at which the instance was created.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
updateTime

string (Timestamp format)

Output only. The time at which the instance was most recently updated.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
freeInstanceMetadata

object (FreeInstanceMetadata)

Free instance metadata. Only populated for free instances.
edition

enum (Edition)

Optional. The Edition of the current instance.
defaultBackupScheduleType

enum (DefaultBackupScheduleType)

Optional. Controls the default backup schedule behavior for new databases within the instance. By default, a backup schedule is created automatically when a new database is created in a new instance.

Note that the AUTOMATIC value isn't permitted for free instances, as backups and backup schedules aren't supported for free instances.

In the instances.get or instances.list response, if the value of defaultBackupScheduleType isn't set, or set to NONE, Spanner doesn't create a default backup schedule for new databases in the instance.

ReplicaComputeCapacity

ReplicaComputeCapacity describes the amount of server resources that are allocated to each replica identified by the replica selection.

JSON representation 
{
  "replicaSelection": {
    object (ReplicaSelection)
  },

  // Union field compute_capacity can be only one of the following:
  "nodeCount": integer,
  "processingUnits": integer
  // End of list of possible types for union field compute_capacity.
}
Fields
replicaSelection

object (ReplicaSelection)

Required. Identifies replicas by specified properties. All replicas in the selection have the same amount of compute capacity.
Union field compute_capacity. Compute capacity allocated to each replica identified by the specified selection. The unit is selected based on the unit used to specify the instance size for non-autoscaling instances, or the unit used in autoscaling limit for autoscaling instances. compute_capacity can be only one of the following:
nodeCount

integer

The number of nodes allocated to each replica.

This may be zero in API responses for instances that are not yet in state READY.
processingUnits

integer

The number of processing units allocated to each replica.

This may be zero in API responses for instances that are not yet in state READY.

State

Indicates the current state of the instance.

Enums
STATE_UNSPECIFIED Not specified.
CREATING The instance is still being created. Resources may not be available yet, and operations such as database creation may not work.
READY The instance is fully created and ready to do work such as creating databases.

InstanceType

The type of this instance. The type can be used to distinguish product variants, that can affect aspects like: usage restrictions, quotas and billing. Currently this is used to distinguish FREE_INSTANCE vs PROVISIONED instances.

Enums
INSTANCE_TYPE_UNSPECIFIED Not specified.
PROVISIONED Provisioned instances have dedicated resources, standard usage limits and support.
FREE_INSTANCE Free instances provide no guarantee for dedicated resources, [nodeCount, processingUnits] should be 0. They come with stricter usage limits and limited support.

FreeInstanceMetadata

Free instance specific metadata that is kept even after an instance has been upgraded for tracking purposes.

JSON representation 
{
  "expireTime": string,
  "upgradeTime": string,
  "expireBehavior": enum (ExpireBehavior)
}
Fields
expireTime

string (Timestamp format)

Output only. Timestamp after which the instance will either be upgraded or scheduled for deletion after a grace period. ExpireBehavior is used to choose between upgrading or scheduling the free instance for deletion. This timestamp is set during the creation of a free instance.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
upgradeTime

string (Timestamp format)

Output only. If present, the timestamp at which the free instance was upgraded to a provisioned instance.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
expireBehavior

enum (ExpireBehavior)

Specifies the expiration behavior of a free instance. The default of ExpireBehavior is REMOVE_AFTER_GRACE_PERIOD. This can be modified during or after creation, and before expiration.

ExpireBehavior

Allows users to change behavior when a free instance expires.

Enums
EXPIRE_BEHAVIOR_UNSPECIFIED Not specified.
FREE_TO_PROVISIONED When the free instance expires, upgrade the instance to a provisioned instance.
REMOVE_AFTER_GRACE_PERIOD When the free instance expires, disable the instance, and delete it after the grace period passes if it has not been upgraded.

DefaultBackupScheduleType

Indicates the default backup schedule behavior for new databases within the instance.

Enums
DEFAULT_BACKUP_SCHEDULE_TYPE_UNSPECIFIED Not specified.
NONE A default backup schedule isn't created automatically when a new database is created in the instance.
AUTOMATIC A default backup schedule is created automatically when a new database is created in the instance. The default backup schedule creates a full backup every 24 hours. These full backups are retained for 7 days. You can edit or delete the default backup schedule once it's created.

Methods

create

 Creates an instance and begins preparing it to begin serving.

delete

 Deletes an instance.

get

 Gets information about a particular instance.

getIamPolicy

 Gets the access control policy for an instance resource.

list

 Lists all instances in the given project.

move

 Moves an instance to the target instance configuration.

patch

 Updates an instance, and begins allocating or releasing resources as requested.

setIamPolicy

 Sets the access control policy on an instance resource.

testIamPermissions

 Returns permissions that the caller has on the specified instance resource.