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<h1><a href="spanner_v1.html">Cloud Spanner API</a> . <a href="spanner_v1.projects.html">projects</a> . <a href="spanner_v1.projects.instances.html">instances</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="spanner_v1.projects.instances.databases.html">databases()</a></code>
</p>
<p class="firstline">Returns the databases Resource.</p>

<p class="toc_element">
  <code><a href="spanner_v1.projects.instances.operations.html">operations()</a></code>
</p>
<p class="firstline">Returns the operations Resource.</p>

<p class="toc_element">
  <code><a href="#create">create(parent, body, x__xgafv=None)</a></code></p>
<p class="firstline">Creates an instance and begins preparing it to begin serving. The</p>
<p class="toc_element">
  <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
<p class="firstline">Deletes an instance.</p>
<p class="toc_element">
  <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
<p class="firstline">Gets information about a particular instance.</p>
<p class="toc_element">
  <code><a href="#getIamPolicy">getIamPolicy(resource, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Gets the access control policy for an instance resource. Returns an empty</p>
<p class="toc_element">
  <code><a href="#list">list(parent, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</a></code></p>
<p class="firstline">Lists all instances in the given project.</p>
<p class="toc_element">
  <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
<p class="firstline">Retrieves the next page of results.</p>
<p class="toc_element">
  <code><a href="#patch">patch(name, body, x__xgafv=None)</a></code></p>
<p class="firstline">Updates an instance, and begins allocating or releasing resources</p>
<p class="toc_element">
  <code><a href="#setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</a></code></p>
<p class="firstline">Sets the access control policy on an instance resource. Replaces any</p>
<p class="toc_element">
  <code><a href="#testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</a></code></p>
<p class="firstline">Returns permissions that the caller has on the specified instance resource.</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="create">create(parent, body, x__xgafv=None)</code>
  <pre>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.

Args:
  parent: string, Required. The name of the project in which to create the instance. Values
are of the form `projects/<project>`. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # The request for CreateInstance.
    "instanceId": "A String", # Required. The ID of the instance to create.  Valid identifiers are of the
        # form `a-z*[a-z0-9]` and must be between 2 and 64 characters in
        # length.
    "instance": { # An isolated set of Cloud Spanner resources on which databases can be hosted. # Required. The instance to create.  The name may be omitted, but if
        # specified must be `<parent>/instances/<instance_id>`.
      "displayName": "A 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.
      "name": "A 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]`. The final
          # segment of the name must be between 2 and 64 characters in length.
      "labels": { # 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]*[a-z0-9])?`.
          #  * Label values must be between 0 and 63 characters long and must conform
          #    to the regular expression `([a-z]([-a-z0-9]*[a-z0-9])?)?`.
          #  * 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.
        "a_key": "A String",
      },
      "state": "A String", # Output only. The current instance state. For
          # CreateInstance, the state must be
          # either omitted or set to `CREATING`. For
          # UpdateInstance, the state must be
          # either omitted or set to `READY`.
      "nodeCount": 42, # Required. The number of nodes allocated to this instance. This may be zero
          # in API responses for instances that are not yet in state `READY`.
          #
          # See [the
          # documentation](https://cloud.google.com/spanner/docs/instances#node_count)
          # for more information about nodes.
      "config": "A String", # Required. The name of the instance's configuration. Values are of the form
          # `projects/<project>/instanceConfigs/<configuration>`. See
          # also InstanceConfig and
          # ListInstanceConfigs.
    },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # This resource represents a long-running operation that is the result of a
      # network API call.
    "metadata": { # Service-specific metadata associated with the operation.  It typically
        # contains progress information and common metadata such as create time.
        # Some services might not provide such metadata.  Any method that returns a
        # long-running operation should document the metadata type, if any.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
        # different programming environments, including REST APIs and RPC APIs. It is
        # used by [gRPC](https://github.com/grpc). The error model is designed to be:
        #
        # - Simple to use and understand for most users
        # - Flexible enough to meet unexpected needs
        #
        # # Overview
        #
        # The `Status` message contains three pieces of data: error code, error
        # message, and error details. The error code should be an enum value of
        # google.rpc.Code, but it may accept additional error codes if needed.  The
        # error message should be a developer-facing English message that helps
        # developers *understand* and *resolve* the error. If a localized user-facing
        # error message is needed, put the localized message in the error details or
        # localize it in the client. The optional error details may contain arbitrary
        # information about the error. There is a predefined set of error detail types
        # in the package `google.rpc` that can be used for common error conditions.
        #
        # # Language mapping
        #
        # The `Status` message is the logical representation of the error model, but it
        # is not necessarily the actual wire format. When the `Status` message is
        # exposed in different client libraries and different wire protocols, it can be
        # mapped differently. For example, it will likely be mapped to some exceptions
        # in Java, but more likely mapped to some error codes in C.
        #
        # # Other uses
        #
        # The error model and the `Status` message can be used in a variety of
        # environments, either with or without APIs, to provide a
        # consistent developer experience across different environments.
        #
        # Example uses of this error model include:
        #
        # - Partial errors. If a service needs to return partial errors to the client,
        #     it may embed the `Status` in the normal response to indicate the partial
        #     errors.
        #
        # - Workflow errors. A typical workflow has multiple steps. Each step may
        #     have a `Status` message for error reporting.
        #
        # - Batch operations. If a client uses batch request and batch response, the
        #     `Status` message should be used directly inside batch response, one for
        #     each error sub-response.
        #
        # - Asynchronous operations. If an API call embeds asynchronous operation
        #     results in its response, the status of those operations should be
        #     represented directly using the `Status` message.
        #
        # - Logging. If some API errors are stored in logs, the message `Status` could
        #     be used directly after any stripping needed for security/privacy reasons.
      "message": "A String", # A developer-facing error message, which should be in English. Any
          # user-facing error message should be localized and sent in the
          # google.rpc.Status.details field, or localized by the client.
      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
      "details": [ # A list of messages that carry the error details.  There is a common set of
          # message types for APIs to use.
        {
          "a_key": "", # Properties of the object. Contains field @type with type URL.
        },
      ],
    },
    "done": True or False, # If the value is `false`, it means the operation is still in progress.
        # If `true`, the operation is completed, and either `error` or `response` is
        # available.
    "response": { # The normal response of the operation in case of success.  If the original
        # method returns no data on success, such as `Delete`, the response is
        # `google.protobuf.Empty`.  If the original method is standard
        # `Get`/`Create`/`Update`, the response should be the resource.  For other
        # methods, the response should have the type `XxxResponse`, where `Xxx`
        # is the original method name.  For example, if the original method name
        # is `TakeSnapshot()`, the inferred response type is
        # `TakeSnapshotResponse`.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "name": "A String", # The server-assigned name, which is only unique within the same service that
        # originally returns it. If you use the default HTTP mapping, the
        # `name` should be a resource name ending with `operations/{unique_id}`.
  }</pre>
</div>

<div class="method">
    <code class="details" id="delete">delete(name, x__xgafv=None)</code>
  <pre>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.

Args:
  name: string, Required. The name of the instance to be deleted. Values are of the form
`projects/<project>/instances/<instance>` (required)
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A generic empty message that you can re-use to avoid defining duplicated
      # empty messages in your APIs. A typical example is to use it as the request
      # or the response type of an API method. For instance:
      #
      #     service Foo {
      #       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
      #     }
      #
      # The JSON representation for `Empty` is empty JSON object `{}`.
  }</pre>
</div>

<div class="method">
    <code class="details" id="get">get(name, x__xgafv=None)</code>
  <pre>Gets information about a particular instance.

Args:
  name: string, Required. The name of the requested instance. Values are of the form
`projects/<project>/instances/<instance>`. (required)
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # An isolated set of Cloud Spanner resources on which databases can be hosted.
    "displayName": "A 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.
    "name": "A 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]`. The final
        # segment of the name must be between 2 and 64 characters in length.
    "labels": { # 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]*[a-z0-9])?`.
        #  * Label values must be between 0 and 63 characters long and must conform
        #    to the regular expression `([a-z]([-a-z0-9]*[a-z0-9])?)?`.
        #  * 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.
      "a_key": "A String",
    },
    "state": "A String", # Output only. The current instance state. For
        # CreateInstance, the state must be
        # either omitted or set to `CREATING`. For
        # UpdateInstance, the state must be
        # either omitted or set to `READY`.
    "nodeCount": 42, # Required. The number of nodes allocated to this instance. This may be zero
        # in API responses for instances that are not yet in state `READY`.
        #
        # See [the
        # documentation](https://cloud.google.com/spanner/docs/instances#node_count)
        # for more information about nodes.
    "config": "A String", # Required. The name of the instance's configuration. Values are of the form
        # `projects/<project>/instanceConfigs/<configuration>`. See
        # also InstanceConfig and
        # ListInstanceConfigs.
  }</pre>
</div>

<div class="method">
    <code class="details" id="getIamPolicy">getIamPolicy(resource, body=None, x__xgafv=None)</code>
  <pre>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.

Args:
  resource: string, REQUIRED: The Cloud Spanner resource for which the policy is being retrieved. The format is `projects/<project ID>/instances/<instance ID>` for instance resources and `projects/<project ID>/instances/<instance ID>/databases/<database ID>` for database resources. (required)
  body: object, The request body.
    The object takes the form of:

{ # Request message for `GetIamPolicy` method.
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Defines an Identity and Access Management (IAM) policy. It is used to
      # specify access control policies for Cloud Platform resources.
      #
      #
      # A `Policy` consists of a list of `bindings`. A `binding` binds a list of
      # `members` to a `role`, where the members can be user accounts, Google groups,
      # Google domains, and service accounts. A `role` is a named list of permissions
      # defined by IAM.
      #
      # **JSON Example**
      #
      #     {
      #       "bindings": [
      #         {
      #           "role": "roles/owner",
      #           "members": [
      #             "user:mike@example.com",
      #             "group:admins@example.com",
      #             "domain:google.com",
      #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
      #           ]
      #         },
      #         {
      #           "role": "roles/viewer",
      #           "members": ["user:sean@example.com"]
      #         }
      #       ]
      #     }
      #
      # **YAML Example**
      #
      #     bindings:
      #     - members:
      #       - user:mike@example.com
      #       - group:admins@example.com
      #       - domain:google.com
      #       - serviceAccount:my-other-app@appspot.gserviceaccount.com
      #       role: roles/owner
      #     - members:
      #       - user:sean@example.com
      #       role: roles/viewer
      #
      #
      # For a description of IAM and its features, see the
      # [IAM developer's guide](https://cloud.google.com/iam/docs).
    "bindings": [ # Associates a list of `members` to a `role`.
        # `bindings` with no members will result in an error.
      { # Associates `members` with a `role`.
        "role": "A String", # Role that is assigned to `members`.
            # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
        "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
            # `members` can have the following values:
            #
            # * `allUsers`: A special identifier that represents anyone who is
            #    on the internet; with or without a Google account.
            #
            # * `allAuthenticatedUsers`: A special identifier that represents anyone
            #    who is authenticated with a Google account or a service account.
            #
            # * `user:{emailid}`: An email address that represents a specific Google
            #    account. For example, `alice@gmail.com` .
            #
            #
            # * `serviceAccount:{emailid}`: An email address that represents a service
            #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
            #
            # * `group:{emailid}`: An email address that represents a Google group.
            #    For example, `admins@example.com`.
            #
            #
            # * `domain:{domain}`: The G Suite domain (primary) that represents all the
            #    users of that domain. For example, `google.com` or `example.com`.
            #
          "A String",
        ],
        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
            # NOTE: An unsatisfied condition will not allow user access via current
            # binding. Different bindings, including their conditions, are examined
            # independently.
            #
            #     title: "User account presence"
            #     description: "Determines whether the request has a user account"
            #     expression: "size(request.user) > 0"
          "location": "A String", # An optional string indicating the location of the expression for error
              # reporting, e.g. a file name and a position in the file.
          "expression": "A String", # Textual representation of an expression in
              # Common Expression Language syntax.
              #
              # The application context of the containing message determines which
              # well-known feature set of CEL is supported.
          "description": "A String", # An optional description of the expression. This is a longer text which
              # describes the expression, e.g. when hovered over it in a UI.
          "title": "A String", # An optional title for the expression, i.e. a short string describing
              # its purpose. This can be used e.g. in UIs which allow to enter the
              # expression.
        },
      },
    ],
    "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
        # prevent simultaneous updates of a policy from overwriting each other.
        # It is strongly suggested that systems make use of the `etag` in the
        # read-modify-write cycle to perform policy updates in order to avoid race
        # conditions: An `etag` is returned in the response to `getIamPolicy`, and
        # systems are expected to put that etag in the request to `setIamPolicy` to
        # ensure that their change will be applied to the same version of the policy.
        #
        # If no `etag` is provided in the call to `setIamPolicy`, then the existing
        # policy is overwritten blindly.
    "version": 42, # Deprecated.
  }</pre>
</div>

<div class="method">
    <code class="details" id="list">list(parent, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</code>
  <pre>Lists all instances in the given project.

Args:
  parent: string, Required. The name of the project for which a list of instances is
requested. Values are of the form `projects/<project>`. (required)
  pageToken: string, If non-empty, `page_token` should contain a
next_page_token from a
previous ListInstancesResponse.
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format
  pageSize: integer, Number of instances to be returned in the response. If 0 or less, defaults
to the server's maximum allowed page size.
  filter: string, An expression for filtering the results of the request. Filter rules are
case insensitive. The fields eligible for filtering are:

  * `name`
  * `display_name`
  * `labels.key` where key is the name of a label

Some examples of using filters are:

  * `name:*` --> The instance has a name.
  * `name:Howl` --> The instance's name contains the string "howl".
  * `name:HOWL` --> Equivalent to above.
  * `NAME:howl` --> Equivalent to above.
  * `labels.env:*` --> The instance has the label "env".
  * `labels.env:dev` --> The instance has the label "env" and the value of
                       the label contains the string "dev".
  * `name:howl labels.env:dev` --> The instance's name contains "howl" and
                                 it has the label "env" with its value
                                 containing "dev".

Returns:
  An object of the form:

    { # The response for ListInstances.
    "nextPageToken": "A String", # `next_page_token` can be sent in a subsequent
        # ListInstances call to fetch more
        # of the matching instances.
    "instances": [ # The list of requested instances.
      { # An isolated set of Cloud Spanner resources on which databases can be hosted.
        "displayName": "A 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.
        "name": "A 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]`. The final
            # segment of the name must be between 2 and 64 characters in length.
        "labels": { # 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]*[a-z0-9])?`.
            #  * Label values must be between 0 and 63 characters long and must conform
            #    to the regular expression `([a-z]([-a-z0-9]*[a-z0-9])?)?`.
            #  * 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.
          "a_key": "A String",
        },
        "state": "A String", # Output only. The current instance state. For
            # CreateInstance, the state must be
            # either omitted or set to `CREATING`. For
            # UpdateInstance, the state must be
            # either omitted or set to `READY`.
        "nodeCount": 42, # Required. The number of nodes allocated to this instance. This may be zero
            # in API responses for instances that are not yet in state `READY`.
            #
            # See [the
            # documentation](https://cloud.google.com/spanner/docs/instances#node_count)
            # for more information about nodes.
        "config": "A String", # Required. The name of the instance's configuration. Values are of the form
            # `projects/<project>/instanceConfigs/<configuration>`. See
            # also InstanceConfig and
            # ListInstanceConfigs.
      },
    ],
  }</pre>
</div>

<div class="method">
    <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
  <pre>Retrieves the next page of results.

Args:
  previous_request: The request for the previous page. (required)
  previous_response: The response from the request for the previous page. (required)

Returns:
  A request object that you can call 'execute()' on to request the next
  page. Returns None if there are no more items in the collection.
    </pre>
</div>

<div class="method">
    <code class="details" id="patch">patch(name, body, x__xgafv=None)</code>
  <pre>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
resource name.

Args:
  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]`. The final
segment of the name must be between 2 and 64 characters in length. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # The request for UpdateInstance.
    "instance": { # An isolated set of Cloud Spanner resources on which databases can be hosted. # Required. The instance to update, which must always include the instance
        # name.  Otherwise, only fields mentioned in [][google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask] need be included.
      "displayName": "A 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.
      "name": "A 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]`. The final
          # segment of the name must be between 2 and 64 characters in length.
      "labels": { # 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]*[a-z0-9])?`.
          #  * Label values must be between 0 and 63 characters long and must conform
          #    to the regular expression `([a-z]([-a-z0-9]*[a-z0-9])?)?`.
          #  * 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.
        "a_key": "A String",
      },
      "state": "A String", # Output only. The current instance state. For
          # CreateInstance, the state must be
          # either omitted or set to `CREATING`. For
          # UpdateInstance, the state must be
          # either omitted or set to `READY`.
      "nodeCount": 42, # Required. The number of nodes allocated to this instance. This may be zero
          # in API responses for instances that are not yet in state `READY`.
          #
          # See [the
          # documentation](https://cloud.google.com/spanner/docs/instances#node_count)
          # for more information about nodes.
      "config": "A String", # Required. The name of the instance's configuration. Values are of the form
          # `projects/<project>/instanceConfigs/<configuration>`. See
          # also InstanceConfig and
          # ListInstanceConfigs.
    },
    "fieldMask": "A String", # Required. A mask specifying which fields in [][google.spanner.admin.instance.v1.UpdateInstanceRequest.instance] should be updated.
        # The field mask must always be specified; this prevents any future fields in
        # [][google.spanner.admin.instance.v1.Instance] from being erased accidentally by clients that do not know
        # about them.
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # This resource represents a long-running operation that is the result of a
      # network API call.
    "metadata": { # Service-specific metadata associated with the operation.  It typically
        # contains progress information and common metadata such as create time.
        # Some services might not provide such metadata.  Any method that returns a
        # long-running operation should document the metadata type, if any.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
        # different programming environments, including REST APIs and RPC APIs. It is
        # used by [gRPC](https://github.com/grpc). The error model is designed to be:
        #
        # - Simple to use and understand for most users
        # - Flexible enough to meet unexpected needs
        #
        # # Overview
        #
        # The `Status` message contains three pieces of data: error code, error
        # message, and error details. The error code should be an enum value of
        # google.rpc.Code, but it may accept additional error codes if needed.  The
        # error message should be a developer-facing English message that helps
        # developers *understand* and *resolve* the error. If a localized user-facing
        # error message is needed, put the localized message in the error details or
        # localize it in the client. The optional error details may contain arbitrary
        # information about the error. There is a predefined set of error detail types
        # in the package `google.rpc` that can be used for common error conditions.
        #
        # # Language mapping
        #
        # The `Status` message is the logical representation of the error model, but it
        # is not necessarily the actual wire format. When the `Status` message is
        # exposed in different client libraries and different wire protocols, it can be
        # mapped differently. For example, it will likely be mapped to some exceptions
        # in Java, but more likely mapped to some error codes in C.
        #
        # # Other uses
        #
        # The error model and the `Status` message can be used in a variety of
        # environments, either with or without APIs, to provide a
        # consistent developer experience across different environments.
        #
        # Example uses of this error model include:
        #
        # - Partial errors. If a service needs to return partial errors to the client,
        #     it may embed the `Status` in the normal response to indicate the partial
        #     errors.
        #
        # - Workflow errors. A typical workflow has multiple steps. Each step may
        #     have a `Status` message for error reporting.
        #
        # - Batch operations. If a client uses batch request and batch response, the
        #     `Status` message should be used directly inside batch response, one for
        #     each error sub-response.
        #
        # - Asynchronous operations. If an API call embeds asynchronous operation
        #     results in its response, the status of those operations should be
        #     represented directly using the `Status` message.
        #
        # - Logging. If some API errors are stored in logs, the message `Status` could
        #     be used directly after any stripping needed for security/privacy reasons.
      "message": "A String", # A developer-facing error message, which should be in English. Any
          # user-facing error message should be localized and sent in the
          # google.rpc.Status.details field, or localized by the client.
      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
      "details": [ # A list of messages that carry the error details.  There is a common set of
          # message types for APIs to use.
        {
          "a_key": "", # Properties of the object. Contains field @type with type URL.
        },
      ],
    },
    "done": True or False, # If the value is `false`, it means the operation is still in progress.
        # If `true`, the operation is completed, and either `error` or `response` is
        # available.
    "response": { # The normal response of the operation in case of success.  If the original
        # method returns no data on success, such as `Delete`, the response is
        # `google.protobuf.Empty`.  If the original method is standard
        # `Get`/`Create`/`Update`, the response should be the resource.  For other
        # methods, the response should have the type `XxxResponse`, where `Xxx`
        # is the original method name.  For example, if the original method name
        # is `TakeSnapshot()`, the inferred response type is
        # `TakeSnapshotResponse`.
      "a_key": "", # Properties of the object. Contains field @type with type URL.
    },
    "name": "A String", # The server-assigned name, which is only unique within the same service that
        # originally returns it. If you use the default HTTP mapping, the
        # `name` should be a resource name ending with `operations/{unique_id}`.
  }</pre>
</div>

<div class="method">
    <code class="details" id="setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</code>
  <pre>Sets the access control policy on an instance resource. Replaces any
existing policy.

Authorization requires `spanner.instances.setIamPolicy` on
resource.

Args:
  resource: string, REQUIRED: The Cloud Spanner resource for which the policy is being set. The format is `projects/<project ID>/instances/<instance ID>` for instance resources and `projects/<project ID>/instances/<instance ID>/databases/<database ID>` for databases resources. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # Request message for `SetIamPolicy` method.
    "policy": { # Defines an Identity and Access Management (IAM) policy. It is used to # 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.
        # specify access control policies for Cloud Platform resources.
        #
        #
        # A `Policy` consists of a list of `bindings`. A `binding` binds a list of
        # `members` to a `role`, where the members can be user accounts, Google groups,
        # Google domains, and service accounts. A `role` is a named list of permissions
        # defined by IAM.
        #
        # **JSON Example**
        #
        #     {
        #       "bindings": [
        #         {
        #           "role": "roles/owner",
        #           "members": [
        #             "user:mike@example.com",
        #             "group:admins@example.com",
        #             "domain:google.com",
        #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
        #           ]
        #         },
        #         {
        #           "role": "roles/viewer",
        #           "members": ["user:sean@example.com"]
        #         }
        #       ]
        #     }
        #
        # **YAML Example**
        #
        #     bindings:
        #     - members:
        #       - user:mike@example.com
        #       - group:admins@example.com
        #       - domain:google.com
        #       - serviceAccount:my-other-app@appspot.gserviceaccount.com
        #       role: roles/owner
        #     - members:
        #       - user:sean@example.com
        #       role: roles/viewer
        #
        #
        # For a description of IAM and its features, see the
        # [IAM developer's guide](https://cloud.google.com/iam/docs).
      "bindings": [ # Associates a list of `members` to a `role`.
          # `bindings` with no members will result in an error.
        { # Associates `members` with a `role`.
          "role": "A String", # Role that is assigned to `members`.
              # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
          "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
              # `members` can have the following values:
              #
              # * `allUsers`: A special identifier that represents anyone who is
              #    on the internet; with or without a Google account.
              #
              # * `allAuthenticatedUsers`: A special identifier that represents anyone
              #    who is authenticated with a Google account or a service account.
              #
              # * `user:{emailid}`: An email address that represents a specific Google
              #    account. For example, `alice@gmail.com` .
              #
              #
              # * `serviceAccount:{emailid}`: An email address that represents a service
              #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
              #
              # * `group:{emailid}`: An email address that represents a Google group.
              #    For example, `admins@example.com`.
              #
              #
              # * `domain:{domain}`: The G Suite domain (primary) that represents all the
              #    users of that domain. For example, `google.com` or `example.com`.
              #
            "A String",
          ],
          "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
              # NOTE: An unsatisfied condition will not allow user access via current
              # binding. Different bindings, including their conditions, are examined
              # independently.
              #
              #     title: "User account presence"
              #     description: "Determines whether the request has a user account"
              #     expression: "size(request.user) > 0"
            "location": "A String", # An optional string indicating the location of the expression for error
                # reporting, e.g. a file name and a position in the file.
            "expression": "A String", # Textual representation of an expression in
                # Common Expression Language syntax.
                #
                # The application context of the containing message determines which
                # well-known feature set of CEL is supported.
            "description": "A String", # An optional description of the expression. This is a longer text which
                # describes the expression, e.g. when hovered over it in a UI.
            "title": "A String", # An optional title for the expression, i.e. a short string describing
                # its purpose. This can be used e.g. in UIs which allow to enter the
                # expression.
          },
        },
      ],
      "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
          # prevent simultaneous updates of a policy from overwriting each other.
          # It is strongly suggested that systems make use of the `etag` in the
          # read-modify-write cycle to perform policy updates in order to avoid race
          # conditions: An `etag` is returned in the response to `getIamPolicy`, and
          # systems are expected to put that etag in the request to `setIamPolicy` to
          # ensure that their change will be applied to the same version of the policy.
          #
          # If no `etag` is provided in the call to `setIamPolicy`, then the existing
          # policy is overwritten blindly.
      "version": 42, # Deprecated.
    },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Defines an Identity and Access Management (IAM) policy. It is used to
      # specify access control policies for Cloud Platform resources.
      #
      #
      # A `Policy` consists of a list of `bindings`. A `binding` binds a list of
      # `members` to a `role`, where the members can be user accounts, Google groups,
      # Google domains, and service accounts. A `role` is a named list of permissions
      # defined by IAM.
      #
      # **JSON Example**
      #
      #     {
      #       "bindings": [
      #         {
      #           "role": "roles/owner",
      #           "members": [
      #             "user:mike@example.com",
      #             "group:admins@example.com",
      #             "domain:google.com",
      #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
      #           ]
      #         },
      #         {
      #           "role": "roles/viewer",
      #           "members": ["user:sean@example.com"]
      #         }
      #       ]
      #     }
      #
      # **YAML Example**
      #
      #     bindings:
      #     - members:
      #       - user:mike@example.com
      #       - group:admins@example.com
      #       - domain:google.com
      #       - serviceAccount:my-other-app@appspot.gserviceaccount.com
      #       role: roles/owner
      #     - members:
      #       - user:sean@example.com
      #       role: roles/viewer
      #
      #
      # For a description of IAM and its features, see the
      # [IAM developer's guide](https://cloud.google.com/iam/docs).
    "bindings": [ # Associates a list of `members` to a `role`.
        # `bindings` with no members will result in an error.
      { # Associates `members` with a `role`.
        "role": "A String", # Role that is assigned to `members`.
            # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
        "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
            # `members` can have the following values:
            #
            # * `allUsers`: A special identifier that represents anyone who is
            #    on the internet; with or without a Google account.
            #
            # * `allAuthenticatedUsers`: A special identifier that represents anyone
            #    who is authenticated with a Google account or a service account.
            #
            # * `user:{emailid}`: An email address that represents a specific Google
            #    account. For example, `alice@gmail.com` .
            #
            #
            # * `serviceAccount:{emailid}`: An email address that represents a service
            #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
            #
            # * `group:{emailid}`: An email address that represents a Google group.
            #    For example, `admins@example.com`.
            #
            #
            # * `domain:{domain}`: The G Suite domain (primary) that represents all the
            #    users of that domain. For example, `google.com` or `example.com`.
            #
          "A String",
        ],
        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
            # NOTE: An unsatisfied condition will not allow user access via current
            # binding. Different bindings, including their conditions, are examined
            # independently.
            #
            #     title: "User account presence"
            #     description: "Determines whether the request has a user account"
            #     expression: "size(request.user) > 0"
          "location": "A String", # An optional string indicating the location of the expression for error
              # reporting, e.g. a file name and a position in the file.
          "expression": "A String", # Textual representation of an expression in
              # Common Expression Language syntax.
              #
              # The application context of the containing message determines which
              # well-known feature set of CEL is supported.
          "description": "A String", # An optional description of the expression. This is a longer text which
              # describes the expression, e.g. when hovered over it in a UI.
          "title": "A String", # An optional title for the expression, i.e. a short string describing
              # its purpose. This can be used e.g. in UIs which allow to enter the
              # expression.
        },
      },
    ],
    "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
        # prevent simultaneous updates of a policy from overwriting each other.
        # It is strongly suggested that systems make use of the `etag` in the
        # read-modify-write cycle to perform policy updates in order to avoid race
        # conditions: An `etag` is returned in the response to `getIamPolicy`, and
        # systems are expected to put that etag in the request to `setIamPolicy` to
        # ensure that their change will be applied to the same version of the policy.
        #
        # If no `etag` is provided in the call to `setIamPolicy`, then the existing
        # policy is overwritten blindly.
    "version": 42, # Deprecated.
  }</pre>
</div>

<div class="method">
    <code class="details" id="testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</code>
  <pre>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.

Args:
  resource: string, REQUIRED: The Cloud Spanner resource for which permissions are being tested. The format is `projects/<project ID>/instances/<instance ID>` for instance resources and `projects/<project ID>/instances/<instance ID>/databases/<database ID>` for database resources. (required)
  body: object, The request body. (required)
    The object takes the form of:

{ # Request message for `TestIamPermissions` method.
    "permissions": [ # REQUIRED: The set of permissions to check for 'resource'.
        # Permissions with wildcards (such as '*', 'spanner.*', 'spanner.instances.*') are not allowed.
      "A String",
    ],
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Response message for `TestIamPermissions` method.
    "permissions": [ # A subset of `TestPermissionsRequest.permissions` that the caller is
        # allowed.
      "A String",
    ],
  }</pre>
</div>

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