Package instance is an auto-generated package for the Cloud Spanner Instance Admin API.

General documentation

For information that is relevant for all client libraries please reference https://pkg.go.dev/cloud.google.com/go#pkg-overview. Some information on this page includes:

• Authentication and Authorization
• Timeouts and Cancellation
• Testing against Client Libraries
• Debugging Client Libraries
• Inspecting errors

Example usage

To get started with this package, create a client.

ctx := context.Background()
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in:
//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
c, err := instance.NewInstanceAdminClient(ctx)
if err != nil {
    // TODO: Handle error.
}
defer c.Close()

The client will use your default application credentials. Clients should be reused instead of created as needed. The methods of Client are safe for concurrent use by multiple goroutines. The returned client must be Closed when it is done being used.

Using the Client

The following is an example of making an API call with the newly created client.

ctx := context.Background()
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in:
//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
c, err := instance.NewInstanceAdminClient(ctx)
if err != nil {
    // TODO: Handle error.
}
defer c.Close()

req := &instancepb.ListInstanceConfigsRequest{
    // TODO: Fill request struct fields.
    // See https://pkg.go.dev/cloud.google.com/go/spanner/admin/instance/apiv1/instancepb#ListInstanceConfigsRequest.
}
it := c.ListInstanceConfigs(ctx, req)
for {
    resp, err := it.Next()
    if err == iterator.Done {
        break
    }
    if err != nil {
        // TODO: Handle error.
    }
    // TODO: Use resp.
    _ = resp
}

Use of Context

The ctx passed to NewInstanceAdminClient is used for authentication requests and for creating the underlying connection, but is not used for subsequent calls. Individual methods on the client use the ctx given to them.

To close the open connection, use the Close() method.

Copyright 2020 Google LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

DefaultAuthScopes reports the default set of authentication scopes to use with this package.

InstanceAdminInstanceConfigPath returns the path for the instance config resource.

Deprecated: Use

fmt.Sprintf("projects/%s/instanceConfigs/%s", project, instanceConfig)

instead.

InstanceAdminInstancePath returns the path for the instance resource.

Deprecated: Use

fmt.Sprintf("projects/%s/instances/%s", project, instance)

instead.

InstanceAdminProjectPath returns the path for the project resource.

Deprecated: Use

fmt.Sprintf("projects/%s", project)

instead.

CreateInstanceConfigOperation manages a long-running operation from CreateInstanceConfig.

Done reports whether the long-running operation has completed.

Metadata returns metadata associated with the long-running operation. Metadata itself does not contact the server, but Poll does. To get the latest metadata, call this method after a successful call to Poll. If the metadata is not available, the returned metadata and error are both nil.

Name returns the name of the long-running operation. The name is assigned by the server and is unique within the service from which the operation is created.

Poll fetches the latest state of the long-running operation.

Poll also fetches the latest metadata, which can be retrieved by Metadata.

If Poll fails, the error is returned and op is unmodified. If Poll succeeds and the operation has completed with failure, the error is returned and op.Done will return true. If Poll succeeds and the operation has completed successfully, op.Done will return true, and the response of the operation is returned. If Poll succeeds and the operation has not completed, the returned response and error are both nil.

Wait blocks until the long-running operation is completed, returning the response and any errors encountered.

See documentation of Poll for error-handling information.

CreateInstanceOperation manages a long-running operation from CreateInstance.

Done reports whether the long-running operation has completed.

Metadata returns metadata associated with the long-running operation. Metadata itself does not contact the server, but Poll does. To get the latest metadata, call this method after a successful call to Poll. If the metadata is not available, the returned metadata and error are both nil.

Name returns the name of the long-running operation. The name is assigned by the server and is unique within the service from which the operation is created.

Poll fetches the latest state of the long-running operation.

Poll also fetches the latest metadata, which can be retrieved by Metadata.

If Poll fails, the error is returned and op is unmodified. If Poll succeeds and the operation has completed with failure, the error is returned and op.Done will return true. If Poll succeeds and the operation has completed successfully, op.Done will return true, and the response of the operation is returned. If Poll succeeds and the operation has not completed, the returned response and error are both nil.

Wait blocks until the long-running operation is completed, returning the response and any errors encountered.

See documentation of Poll for error-handling information.

InstanceAdminCallOptions contains the retry settings for each method of InstanceAdminClient.

InstanceAdminClient is a client for interacting with Cloud Spanner Instance Admin API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

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.

NewInstanceAdminClient creates a new instance admin client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.

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.

NewInstanceAdminRESTClient creates a new instance admin rest client.

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.

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

Connection returns a connection to the API service.

Deprecated: Connections are now pooled so this method does not always return the same resource.

CreateInstance creates an instance and begins preparing it to begin serving. The returned [long-running operation][google.longrunning.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][google.longrunning.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.

CreateInstanceConfig creates an instance config and begins preparing it to be used. The returned [long-running operation][google.longrunning.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][google.longrunning.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.

CreateInstanceConfigOperation returns a new CreateInstanceConfigOperation from a given name. The name must be that of a previously created CreateInstanceConfigOperation, possibly from a different process.

CreateInstanceOperation returns a new CreateInstanceOperation from a given name. The name must be that of a previously created CreateInstanceOperation, possibly from a different process.