Class InstanceAdminClient (2.18.0)

Cloud Spanner Instance Admin API.

The Cloud Spanner Instance Admin API can be used to create, delete, modify and list instances. Instances are dedicated Cloud Spanner serving and storage resources to be used by Cloud Spanner databases.

Each instance has a "configuration", which dictates where the serving resources for the Cloud Spanner instance are located (e.g., US-central, Europe). Configurations are created by Google based on resource availability.

Cloud Spanner billing is based on the instances that exist and their sizes. After an instance exists, there are no additional per-database or per-operation charges for use of the instance (though there may be additional network bandwidth charges). Instances offer isolation: problems with databases in one instance will not affect other instances. However, within an instance databases can affect each other. For example, if one database in an instance receives a lot of requests and consumes most of the instance resources, fewer resources are available for other databases in that instance, and their performance may suffer.

Equality

Instances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal std::shared_ptr<*Connection> objects compare equal. Objects that compare equal share the same underlying resources.

Performance

Creating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.

Thread Safety

Concurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.

Constructors

InstanceAdminClient(InstanceAdminClient const &)

Copy and move support

Parameter
Name	Description
	`InstanceAdminClient const &`

InstanceAdminClient(InstanceAdminClient &&)

Copy and move support

Parameter
Name	Description
	`InstanceAdminClient &&`

InstanceAdminClient(std::shared_ptr< InstanceAdminConnection >, Options)

Parameters
Name	Description
`connection`	`std::shared_ptr< InstanceAdminConnection >`
`opts`	`Options`

Operators

operator=(InstanceAdminClient const &)

Copy and move support

Parameter
Name	Description
	`InstanceAdminClient const &`

Returns
Type	Description
`InstanceAdminClient &`

operator=(InstanceAdminClient &&)

Copy and move support

Parameter
Name	Description
	`InstanceAdminClient &&`

Returns
Type	Description
`InstanceAdminClient &`

Functions

ListInstanceConfigs(std::string const &, Options)

Lists the supported instance configurations for a given project.

Parameters
Name	Description
`parent`	`std::string const &` Required. The name of the project for which a list of supported instance configurations is requested. Values are of the form `projects/<project>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::spanner::admin::instance::v1::InstanceConfig >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.spanner.admin.instance.v1.InstanceConfig, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

ListInstanceConfigs(google::spanner::admin::instance::v1::ListInstanceConfigsRequest, Options)

Lists the supported instance configurations for a given project.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::ListInstanceConfigsRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.ListInstanceConfigsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::spanner::admin::instance::v1::InstanceConfig >

GetInstanceConfig(std::string const &, Options)

Gets information about a particular instance configuration.

Parameters
Name	Description
`name`	`std::string const &` Required. The name of the requested instance configuration. Values are of the form `projects/<project>/instanceConfigs/<config>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::spanner::admin::instance::v1::InstanceConfig >`	the result of the RPC. The response message type (google.spanner.admin.instance.v1.InstanceConfig) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetInstanceConfig(google::spanner::admin::instance::v1::GetInstanceConfigRequest const &, Options)

Gets information about a particular instance configuration.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::GetInstanceConfigRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.GetInstanceConfigRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::spanner::admin::instance::v1::InstanceConfig >`	the result of the RPC. The response message type (google.spanner.admin.instance.v1.InstanceConfig) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

CreateInstanceConfig(std::string const &, google::spanner::admin::instance::v1::InstanceConfig const &, std::string const &, Options)

Creates an instance config and begins preparing it to be used.

The returned long-running operation can be used to track the progress of preparing the new instance config. The instance config name is assigned by the caller. If the named instance config already exists, CreateInstanceConfig returns ALREADY_EXISTS.

Immediately after the request returns:

The instance config is readable via the API, with all requested attributes. The instance config's reconciling field is set to true. Its state is CREATING.

While the operation is pending:

Cancelling the operation renders the instance config immediately unreadable via the API.
Except for deleting the creating resource, all other attempts to modify the instance config are rejected.

Upon completion of the returned operation:

Instances can be created using the instance configuration.
The instance config's reconciling field becomes false. Its state becomes READY.

The returned long-running operation will have a name of the format <instance_config_name>/operations/<operation_id> and can be used to track creation of the instance config. The metadata field type is CreateInstanceConfigMetadata. The response field type is InstanceConfig, if successful.

Authorization requires spanner.instanceConfigs.create permission on the resource parent.

Parameters
Name	Description
`parent`	`std::string const &` Required. The name of the project in which to create the instance config. Values are of the form `projects/<project>`.
`instance_config`	`google::spanner::admin::instance::v1::InstanceConfig const &` Required. The InstanceConfig proto of the configuration to create. instance_config.name must be `<parent>/instanceConfigs/<instance_config_id>`. instance_config.base_config must be a Google managed configuration name, e.g. `<parent>/instanceConfigs/us-east1`, `<parent>/instanceConfigs/nam3`.
`instance_config_id`	`std::string const &` Required. The ID of the instance config to create. Valid identifiers are of the form `custom-[-a-z0-9]*[a-z0-9]` and must be between 2 and 64 characters in length. The `custom-` prefix is required to avoid name conflicts with Google managed configurations.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::InstanceConfig > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.spanner.admin.instance.v1.InstanceConfig proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

CreateInstanceConfig(google::spanner::admin::instance::v1::CreateInstanceConfigRequest const &, Options)

Creates an instance config and begins preparing it to be used.

Immediately after the request returns:

The instance config is readable via the API, with all requested attributes. The instance config's reconciling field is set to true. Its state is CREATING.

While the operation is pending:

Cancelling the operation renders the instance config immediately unreadable via the API.
Except for deleting the creating resource, all other attempts to modify the instance config are rejected.

Upon completion of the returned operation:

Instances can be created using the instance configuration.
The instance config's reconciling field becomes false. Its state becomes READY.

Authorization requires spanner.instanceConfigs.create permission on the resource parent.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::CreateInstanceConfigRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.CreateInstanceConfigRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::InstanceConfig > >

UpdateInstanceConfig(google::spanner::admin::instance::v1::InstanceConfig const &, google::protobuf::FieldMask const &, Options)

Updates an instance config.

The returned long-running operation can be used to track the progress of updating the instance. If the named instance config does not exist, returns NOT_FOUND.

Only user managed configurations can be updated.

Immediately after the request returns:

The instance config's reconciling field is set to true.

While the operation is pending:

Cancelling the operation sets its metadata's cancel_time. The operation is guaranteed to succeed at undoing all changes, after which point it terminates with a CANCELLED status.
All other attempts to modify the instance config are rejected.
Reading the instance config via the API continues to give the pre-request values.

Upon completion of the returned operation:

Creating instances using the instance configuration uses the new values.
The instance config's new values are readable via the API.
The instance config's reconciling field becomes false.

The returned long-running operation will have a name of the format <instance_config_name>/operations/<operation_id> and can be used to track the instance config modification. The metadata field type is UpdateInstanceConfigMetadata. The response field type is InstanceConfig, if successful.

Authorization requires spanner.instanceConfigs.update permission on the resource name.

Parameters
Name	Description
`instance_config`	`google::spanner::admin::instance::v1::InstanceConfig const &` Required. The user instance config to update, which must always include the instance config name. Otherwise, only fields mentioned in [update_mask][google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask] need be included. To prevent conflicts of concurrent updates, etag can be used.
`update_mask`	`google::protobuf::FieldMask const &` Required. A mask specifying which fields in InstanceConfig should be updated. The field mask must always be specified; this prevents any future fields in InstanceConfig from being erased accidentally by clients that do not know about them. Only display_name and labels can be updated.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::InstanceConfig > >

UpdateInstanceConfig(google::spanner::admin::instance::v1::UpdateInstanceConfigRequest const &, Options)

Updates an instance config.

The returned long-running operation can be used to track the progress of updating the instance. If the named instance config does not exist, returns NOT_FOUND.

Only user managed configurations can be updated.

Immediately after the request returns:

The instance config's reconciling field is set to true.

While the operation is pending:

Cancelling the operation sets its metadata's cancel_time. The operation is guaranteed to succeed at undoing all changes, after which point it terminates with a CANCELLED status.
All other attempts to modify the instance config are rejected.
Reading the instance config via the API continues to give the pre-request values.

Upon completion of the returned operation:

Creating instances using the instance configuration uses the new values.
The instance config's new values are readable via the API.
The instance config's reconciling field becomes false.

Authorization requires spanner.instanceConfigs.update permission on the resource name.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::UpdateInstanceConfigRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.UpdateInstanceConfigRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::InstanceConfig > >

DeleteInstanceConfig(std::string const &, Options)

Deletes the instance config.

Deletion is only allowed when no instances are using the configuration. If any instances are using the config, returns FAILED_PRECONDITION.

Only user managed configurations can be deleted.

Authorization requires spanner.instanceConfigs.delete permission on the resource name.

Parameters
Name	Description
`name`	`std::string const &` Required. The name of the instance configuration to be deleted. Values are of the form `projects/<project>/instanceConfigs/<instance_config>`
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

DeleteInstanceConfig(google::spanner::admin::instance::v1::DeleteInstanceConfigRequest const &, Options)

Deletes the instance config.

Deletion is only allowed when no instances are using the configuration. If any instances are using the config, returns FAILED_PRECONDITION.

Only user managed configurations can be deleted.

Authorization requires spanner.instanceConfigs.delete permission on the resource name.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::DeleteInstanceConfigRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.DeleteInstanceConfigRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

ListInstanceConfigOperations(std::string const &, Options)

Lists the user-managed instance config long-running operations in the given project.

An instance config operation has a name of the form projects/<project>/instanceConfigs/<instance_config>/operations/<operation>. The long-running operation metadata field type metadata.type_url describes the type of the metadata. Operations returned include those that have completed/failed/canceled within the last 7 days, and pending operations. Operations returned are ordered by operation.metadata.value.start_time in descending order starting from the most recently started operation.

Parameters
Name	Description
`parent`	`std::string const &` Required. The project of the instance config operations. Values are of the form `projects/<project>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::longrunning::Operation >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.longrunning.Operation, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

ListInstanceConfigOperations(google::spanner::admin::instance::v1::ListInstanceConfigOperationsRequest, Options)

Lists the user-managed instance config long-running operations in the given project.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::ListInstanceConfigOperationsRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.ListInstanceConfigOperationsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::longrunning::Operation >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.longrunning.Operation, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

ListInstances(std::string const &, Options)

Lists all instances in the given project.

Parameters
Name	Description
`parent`	`std::string const &` Required. The name of the project for which a list of instances is requested. Values are of the form `projects/<project>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::spanner::admin::instance::v1::Instance >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.spanner.admin.instance.v1.Instance, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

ListInstances(google::spanner::admin::instance::v1::ListInstancesRequest, Options)

Lists all instances in the given project.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::ListInstancesRequest` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.ListInstancesRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

StreamRange< google::spanner::admin::instance::v1::Instance >

a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.spanner.admin.instance.v1.Instance, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.

GetInstance(std::string const &, Options)

Gets information about a particular instance.

Parameters
Name	Description
`name`	`std::string const &` Required. The name of the requested instance. Values are of the form `projects/<project>/instances/<instance>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::spanner::admin::instance::v1::Instance >`	the result of the RPC. The response message type (google.spanner.admin.instance.v1.Instance) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetInstance(google::spanner::admin::instance::v1::GetInstanceRequest const &, Options)

Gets information about a particular instance.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::GetInstanceRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.GetInstanceRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::spanner::admin::instance::v1::Instance >`	the result of the RPC. The response message type (google.spanner.admin.instance.v1.Instance) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

CreateInstance(std::string const &, std::string const &, google::spanner::admin::instance::v1::Instance const &, Options)

Creates an instance and begins preparing it to begin serving.

The returned long-running 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, CreateInstance returns ALREADY_EXISTS.

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 API.
The instance's state becomes READY.

The returned long-running operation will have a name of the format <instance_name>/operations/<operation_id> and can be used to track creation of the instance. The metadata field type is CreateInstanceMetadata. The response field type is Instance, if successful.

Parameters
Name	Description
`parent`	`std::string const &` Required. The name of the project in which to create the instance. Values are of the form `projects/<project>`.
`instance_id`	`std::string const &` Required. The ID of the instance to create. Valid identifiers are of the form `[a-z][-a-z0-9]*[a-z0-9]` and must be between 2 and 64 characters in length.
`instance`	`google::spanner::admin::instance::v1::Instance const &` Required. The instance to create. The name may be omitted, but if specified must be `<parent>/instances/<instance_id>`.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::Instance > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.spanner.admin.instance.v1.Instance proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

CreateInstance(google::spanner::admin::instance::v1::CreateInstanceRequest const &, Options)

Creates an instance and begins preparing it to begin serving.

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 API.
The instance's state becomes READY.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::CreateInstanceRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.CreateInstanceRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::Instance > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.spanner.admin.instance.v1.Instance proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

UpdateInstance(google::spanner::admin::instance::v1::Instance const &, google::protobuf::FieldMask const &, Options)

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

The returned long-running operation can be used to track the progress of updating the instance. If the named instance does not exist, returns NOT_FOUND.

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, 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.

The returned long-running operation will have a name of the format <instance_name>/operations/<operation_id> and can be used to track the instance modification. The metadata field type is UpdateInstanceMetadata. The response field type is Instance, if successful.

Authorization requires spanner.instances.update permission on the resource name.

Parameters
Name	Description
`instance`	`google::spanner::admin::instance::v1::Instance const &` Required. The instance to update, which must always include the instance name. Otherwise, only fields mentioned in [field_mask][google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask] need be included.
`field_mask`	`google::protobuf::FieldMask const &` Required. A mask specifying which fields in Instance should be updated. The field mask must always be specified; this prevents any future fields in Instance from being erased accidentally by clients that do not know about them.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::Instance > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.spanner.admin.instance.v1.Instance proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

UpdateInstance(google::spanner::admin::instance::v1::UpdateInstanceRequest const &, Options)

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

The returned long-running operation can be used to track the progress of updating the instance. If the named instance does not exist, returns NOT_FOUND.

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, 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.

Authorization requires spanner.instances.update permission on the resource name.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::UpdateInstanceRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.UpdateInstanceRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns

Type Description

future< StatusOr< google::spanner::admin::instance::v1::Instance > >

A future that becomes satisfied when the LRO (Long Running Operation) completes or the polling policy in effect for this call is exhausted. The future is satisfied with an error if the LRO completes with an error or the polling policy is exhausted. In this case the StatusOr returned by the future contains the error. If the LRO completes successfully the value of the future contains the LRO's result. For this RPC the result is a google.spanner.admin.instance.v1.Instance proto message. The C++ class representing this message is created by Protobuf, using the Protobuf mapping rules.

DeleteInstance(std::string const &, Options)

Deletes an instance.

Immediately upon completion of the request:

Billing ceases for all of the instance's reserved resources.

Soon afterward:

The instance and all of its databases immediately and irrevocably disappear from the API. All data in the databases is permanently deleted.

Parameters
Name	Description
`name`	`std::string const &` Required. The name of the instance to be deleted. Values are of the form `projects/<project>/instances/<instance>`
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

DeleteInstance(google::spanner::admin::instance::v1::DeleteInstanceRequest const &, Options)

Deletes an instance.

Immediately upon completion of the request:

Billing ceases for all of the instance's reserved resources.

Soon afterward:

The instance and all of its databases immediately and irrevocably disappear from the API. All data in the databases is permanently deleted.

Parameters
Name	Description
`request`	`google::spanner::admin::instance::v1::DeleteInstanceRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.spanner.admin.instance.v1.DeleteInstanceRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`Status`	a `Status` object. If the request failed, the status contains the details of the failure.

SetIamPolicy(std::string const &, google::iam::v1::Policy const &, Options)

Sets the access control policy on an instance resource.

Replaces any existing policy.

Authorization requires spanner.instances.setIamPolicy on resource.

Parameters
Name	Description
`resource`	`std::string const &` REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.
`policy`	`google::iam::v1::Policy const &` REQUIRED: The complete policy to be applied to the `resource`. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::Policy >`	the result of the RPC. The response message type (google.iam.v1.Policy) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

SetIamPolicy(std::string const &, IamUpdater const &, Options)

Updates the IAM policy for resource using an optimistic concurrency control loop.

The loop fetches the current policy for resource, and passes it to updater, which should return the new policy. This new policy should use the current etag so that the read-modify-write cycle can detect races and rerun the update when there is a mismatch. If the new policy does not have an etag, the existing policy will be blindly overwritten. If updater does not yield a policy, the control loop is terminated and kCancelled is returned.

Parameters
Name	Description
`resource`	`std::string const &` Required. The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.
`updater`	`IamUpdater const &` Required. Functor to map the current policy to a new one.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::Policy >`	google::iam::v1::Policy

SetIamPolicy(google::iam::v1::SetIamPolicyRequest const &, Options)

Sets the access control policy on an instance resource.

Replaces any existing policy.

Authorization requires spanner.instances.setIamPolicy on resource.

Parameters
Name	Description
`request`	`google::iam::v1::SetIamPolicyRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.iam.v1.SetIamPolicyRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::Policy >`	the result of the RPC. The response message type (google.iam.v1.Policy) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetIamPolicy(std::string const &, Options)

Gets the access control policy for an instance resource.

Returns an empty policy if an instance exists but does not have a policy set.

Authorization requires spanner.instances.getIamPolicy on resource.

Parameters
Name	Description
`resource`	`std::string const &` REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::Policy >`	the result of the RPC. The response message type (google.iam.v1.Policy) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

GetIamPolicy(google::iam::v1::GetIamPolicyRequest const &, Options)

Gets the access control policy for an instance resource.

Returns an empty policy if an instance exists but does not have a policy set.

Authorization requires spanner.instances.getIamPolicy on resource.

Parameters
Name	Description
`request`	`google::iam::v1::GetIamPolicyRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.iam.v1.GetIamPolicyRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::Policy >`	the result of the RPC. The response message type (google.iam.v1.Policy) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

TestIamPermissions(std::string const &, std::vector< std::string > const &, Options)

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

Attempting this RPC on a non-existent Cloud Spanner instance resource will result in a NOT_FOUND error if the user has spanner.instances.list permission on the containing Google Cloud Project. Otherwise returns an empty set of permissions.

Parameters
Name	Description
`resource`	`std::string const &` REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field.
`permissions`	`std::vector< std::string > const &` The set of permissions to check for the `resource`. Permissions with wildcards (such as '' or 'storage.') are not allowed. For more information see IAM Overview.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::TestIamPermissionsResponse >`	the result of the RPC. The response message type (google.iam.v1.TestIamPermissionsResponse) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.

TestIamPermissions(google::iam::v1::TestIamPermissionsRequest const &, Options)

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

Parameters
Name	Description
`request`	`google::iam::v1::TestIamPermissionsRequest const &` Unary RPCs, such as the one wrapped by this function, receive a single `request` proto message which includes all the inputs for the RPC. In this case, the proto message is a google.iam.v1.TestIamPermissionsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
`opts`	`Options` Optional. Override the class-level options, such as retry and backoff policies.

Returns
Type	Description
`StatusOr< google::iam::v1::TestIamPermissionsResponse >`	the result of the RPC. The response message type (google.iam.v1.TestIamPermissionsResponse) is mapped to a C++ class using the Protobuf mapping rules. If the request fails, the `StatusOr` contains the error details.