<?php
// GENERATED CODE -- DO NOT EDIT!

// Original file comments:
// Copyright 2021 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.
//
namespace Google\Cloud\Spanner\Admin\Instance\V1;

/**
 * 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.
 */
class InstanceAdminGrpcClient extends \Grpc\BaseStub {

    /**
     * @param string $hostname hostname
     * @param array $opts channel options
     * @param \Grpc\Channel $channel (optional) re-use channel object
     */
    public function __construct($hostname, $opts, $channel = null) {
        parent::__construct($hostname, $opts, $channel);
    }

    /**
     * Lists the supported instance configurations for a given project.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\ListInstanceConfigsRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function ListInstanceConfigs(\Google\Cloud\Spanner\Admin\Instance\V1\ListInstanceConfigsRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/ListInstanceConfigs',
        $argument,
        ['\Google\Cloud\Spanner\Admin\Instance\V1\ListInstanceConfigsResponse', 'decode'],
        $metadata, $options);
    }

    /**
     * Gets information about a particular instance configuration.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceConfigRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function GetInstanceConfig(\Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceConfigRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/GetInstanceConfig',
        $argument,
        ['\Google\Cloud\Spanner\Admin\Instance\V1\InstanceConfig', 'decode'],
        $metadata, $options);
    }

    /**
     * Lists all instances in the given project.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\ListInstancesRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function ListInstances(\Google\Cloud\Spanner\Admin\Instance\V1\ListInstancesRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/ListInstances',
        $argument,
        ['\Google\Cloud\Spanner\Admin\Instance\V1\ListInstancesResponse', 'decode'],
        $metadata, $options);
    }

    /**
     * Gets information about a particular instance.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function GetInstance(\Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/GetInstance',
        $argument,
        ['\Google\Cloud\Spanner\Admin\Instance\V1\Instance', 'decode'],
        $metadata, $options);
    }

    /**
     * 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][google.longrunning.Operation.metadata] field type is
     * [CreateInstanceMetadata][google.spanner.admin.instance.v1.CreateInstanceMetadata].
     * The [response][google.longrunning.Operation.response] field type is
     * [Instance][google.spanner.admin.instance.v1.Instance], if successful.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\CreateInstanceRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function CreateInstance(\Google\Cloud\Spanner\Admin\Instance\V1\CreateInstanceRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstance',
        $argument,
        ['\Google\LongRunning\Operation', 'decode'],
        $metadata, $options);
    }

    /**
     * Updates an instance, and begins allocating or releasing resources
     * as requested. The returned [long-running
     * operation][google.longrunning.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][google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time], and begins
     *     restoring resources to their pre-request values. The operation
     *     is guaranteed to succeed at undoing all resource changes,
     *     after which point it terminates with a `CANCELLED` status.
     *   * All other attempts to modify the instance are rejected.
     *   * Reading the instance via the API continues to give the pre-request
     *     resource levels.
     *
     * Upon completion of the returned operation:
     *
     *   * Billing begins for all successfully-allocated resources (some types
     *     may have lower than the requested levels).
     *   * All newly-reserved resources are available for serving the instance's
     *     tables.
     *   * The instance's new resource levels are readable via the API.
     *
     * 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 the instance modification.  The
     * [metadata][google.longrunning.Operation.metadata] field type is
     * [UpdateInstanceMetadata][google.spanner.admin.instance.v1.UpdateInstanceMetadata].
     * The [response][google.longrunning.Operation.response] field type is
     * [Instance][google.spanner.admin.instance.v1.Instance], if successful.
     *
     * Authorization requires `spanner.instances.update` permission on
     * resource [name][google.spanner.admin.instance.v1.Instance.name].
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\UpdateInstanceRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function UpdateInstance(\Google\Cloud\Spanner\Admin\Instance\V1\UpdateInstanceRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstance',
        $argument,
        ['\Google\LongRunning\Operation', 'decode'],
        $metadata, $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.
     * @param \Google\Cloud\Spanner\Admin\Instance\V1\DeleteInstanceRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function DeleteInstance(\Google\Cloud\Spanner\Admin\Instance\V1\DeleteInstanceRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstance',
        $argument,
        ['\Google\Protobuf\GPBEmpty', 'decode'],
        $metadata, $options);
    }

    /**
     * Sets the access control policy on an instance resource. Replaces any
     * existing policy.
     *
     * Authorization requires `spanner.instances.setIamPolicy` on
     * [resource][google.iam.v1.SetIamPolicyRequest.resource].
     * @param \Google\Cloud\Iam\V1\SetIamPolicyRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function SetIamPolicy(\Google\Cloud\Iam\V1\SetIamPolicyRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/SetIamPolicy',
        $argument,
        ['\Google\Cloud\Iam\V1\Policy', 'decode'],
        $metadata, $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][google.iam.v1.GetIamPolicyRequest.resource].
     * @param \Google\Cloud\Iam\V1\GetIamPolicyRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function GetIamPolicy(\Google\Cloud\Iam\V1\GetIamPolicyRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/GetIamPolicy',
        $argument,
        ['\Google\Cloud\Iam\V1\Policy', 'decode'],
        $metadata, $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.
     * @param \Google\Cloud\Iam\V1\TestIamPermissionsRequest $argument input argument
     * @param array $metadata metadata
     * @param array $options call options
     * @return \Grpc\UnaryCall
     */
    public function TestIamPermissions(\Google\Cloud\Iam\V1\TestIamPermissionsRequest $argument,
      $metadata = [], $options = []) {
        return $this->_simpleRequest('/google.spanner.admin.instance.v1.InstanceAdmin/TestIamPermissions',
        $argument,
        ['\Google\Cloud\Iam\V1\TestIamPermissionsResponse', 'decode'],
        $metadata, $options);
    }

}
