Compute V1 Client - Class InstanceGroupsClient (1.13.0)

Reference documentation and code samples for the Compute V1 Client class InstanceGroupsClient.

Service Description: The InstanceGroups API.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:

$instanceGroupsClient = new InstanceGroupsClient();
try {
    $instanceGroup = 'instance_group';
    $instanceGroupsAddInstancesRequestResource = new InstanceGroupsAddInstancesRequest();
    $project = 'project';
    $zone = 'zone';
    $operationResponse = $instanceGroupsClient->addInstances($instanceGroup, $instanceGroupsAddInstancesRequestResource, $project, $zone);
    $operationResponse->pollUntilComplete();
    if ($operationResponse->operationSucceeded()) {
        // if creating/modifying, retrieve the target resource
    } else {
        $error = $operationResponse->getError();
        // handleError($error)
    }
    // Alternatively:
    // start the operation, keep the operation name, and resume later
    $operationResponse = $instanceGroupsClient->addInstances($instanceGroup, $instanceGroupsAddInstancesRequestResource, $project, $zone);
    $operationName = $operationResponse->getName();
    // ... do other work
    $newOperationResponse = $instanceGroupsClient->resumeOperation($operationName, 'addInstances');
    while (!$newOperationResponse->isDone()) {
        // ... do other work
        $newOperationResponse->reload();
    }
    if ($newOperationResponse->operationSucceeded()) {
        // if creating/modifying, retrieve the target resource
    } else {
        $error = $newOperationResponse->getError();
        // handleError($error)
    }
} finally {
    $instanceGroupsClient->close();
}

This service has a new (beta) implementation. See Google\Cloud\Compute\V1\Client\InstanceGroupsClient to use the new surface.

Namespace

Google \ Cloud \ Compute \ V1

Methods

__construct

Constructor.

Parameters
Name	Description
`options`	`array` Optional. Options for configuring the service API wrapper.
`↳ apiEndpoint`	`string` The address of the API remote host. May optionally include the port, formatted as "
`↳ credentials`	`string\|array\|FetchAuthTokenInterface\|CredentialsWrapper` The credentials to be used by the client to authorize API calls. This option accepts either a path to a credentials file, or a decoded credentials file as a PHP array. Advanced usage: In addition, this option can also accept a pre-constructed Google\Auth\FetchAuthTokenInterface object or Google\ApiCore\CredentialsWrapper object. Note that when one of these objects are provided, any settings in $credentialsConfig will be ignored.
`↳ credentialsConfig`	`array` Options used to configure credentials, including auth token caching, for the client. For a full list of supporting configuration options, see Google\ApiCore\CredentialsWrapper::build() .
`↳ disableRetries`	`bool` Determines whether or not retries defined by the client configuration should be disabled. Defaults to `false`.
`↳ clientConfig`	`string\|array` Client method configuration, including retry settings. This option can be either a path to a JSON file, or a PHP array containing the decoded JSON data. By default this settings points to the default client config file, which is provided in the resources folder.
`↳ transport`	`string\|TransportInterface` The transport used for executing network requests. At the moment, supports only `rest`. Advanced usage: Additionally, it is possible to pass in an already instantiated Google\ApiCore\Transport\TransportInterface object. Note that when this object is provided, any settings in $transportConfig, and any $apiEndpoint setting, will be ignored.
`↳ transportConfig`	`array` Configuration options that will be used to construct the transport. Options for each supported transport type should be passed in a key for that transport. For example: $transportConfig = [ 'rest' => [...], ]; See the Google\ApiCore\Transport\RestTransport::build() method for the supported options.
`↳ clientCertSource`	`callable` A callable which returns the client cert as a string. This can be used to provide a certificate and private key to the transport layer for mTLS.

addInstances

Adds a list of instances to the specified instance group. All of the instances in the instance group must be in the same network/subnetwork. Read Adding instances for more information.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group where you are adding instances.
`instanceGroupsAddInstancesRequestResource`	`Google\Cloud\Compute\V1\InstanceGroupsAddInstancesRequest` The body resource for this request
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ requestId`	`string` An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\OperationResponse;
use Google\Cloud\Compute\V1\InstanceGroupsAddInstancesRequest;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Rpc\Status;

/**
 * @param string $instanceGroup The name of the instance group where you are adding instances.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function add_instances_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $instanceGroupsAddInstancesRequestResource = new InstanceGroupsAddInstancesRequest();

    // Call the API and handle any network failures.
    try {
        /** @var OperationResponse $response */
        $response = $instanceGroupsClient->addInstances(
            $instanceGroup,
            $instanceGroupsAddInstancesRequestResource,
            $project,
            $zone
        );
        $response->pollUntilComplete();

        if ($response->operationSucceeded()) {
            printf('Operation completed successfully.' . PHP_EOL);
        } else {
            /** @var Status $error */
            $error = $response->getError();
            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    add_instances_sample($instanceGroup, $project, $zone);
}

aggregatedList

Retrieves the list of instance groups and sorts them by zone.

Parameters
Name	Description
`project`	`string` Project ID for this request.
`optionalArgs`	`array` Optional.
`↳ filter`	`string` A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. These two types of filter expressions cannot be mixed in one request. If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: `labels.owner:` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: `(scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake")` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: `(cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true)` If you want to use a regular expression, use the `eq` (equal) or `ne` (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples: `fieldname eq unquoted literal` `fieldname eq 'single quoted literal'` `fieldname eq "double quoted literal"` `(fieldname1 eq literal) (fieldname2 ne "literal")` The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field. For example, to filter for instances that do not end with name "instance", you would use `name ne .*instance`. You cannot combine constraints on multiple fields using regular expressions.
`↳ includeAllScopes`	`bool` Indicates whether every visible scope for each scope type (zone, region, global) should be included in the response. For new resource types added after this field, the flag has no effect as new resource types will always include every visible scope for each scope type in response. For resource types which predate this field, if this flag is omitted or false, only scopes of the scope types where the resource type is expected to be found will be included.
`↳ maxResults`	`int` The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
`↳ orderBy`	`string` Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
`↳ pageToken`	`string` A page token is used to specify a page of values to be returned. If no page token is specified (the default), the first page of values will be returned. Any page token used here must have been generated by a previous call to the API.
`↳ returnPartialSuccess`	`bool` Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.
`↳ serviceProjectNumber`	`int`
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\PagedListResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\PagedListResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;

/**
 * @param string $project Project ID for this request.
 */
function aggregated_list_sample(string $project): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Call the API and handle any network failures.
    try {
        /** @var PagedListResponse $response */
        $response = $instanceGroupsClient->aggregatedList($project);

        foreach ($response as $element) {
            printf('Element data: %s' . PHP_EOL, $element->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $project = '[PROJECT]';

    aggregated_list_sample($project);
}

delete

Deletes the specified instance group. The instances in the group are not deleted. Note that instance group must not belong to a backend service. Read Deleting an instance group for more information.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group to delete.
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ requestId`	`string` An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\OperationResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Rpc\Status;

/**
 * @param string $instanceGroup The name of the instance group to delete.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function delete_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Call the API and handle any network failures.
    try {
        /** @var OperationResponse $response */
        $response = $instanceGroupsClient->delete($instanceGroup, $project, $zone);
        $response->pollUntilComplete();

        if ($response->operationSucceeded()) {
            printf('Operation completed successfully.' . PHP_EOL);
        } else {
            /** @var Status $error */
            $error = $response->getError();
            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    delete_sample($instanceGroup, $project, $zone);
}

get

Returns the specified zonal instance group. Get a list of available zonal instance groups by making a list() request. For managed instance groups, use the instanceGroupManagers or regionInstanceGroupManagers methods instead.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group.
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\Compute\V1\InstanceGroup`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\Compute\V1\InstanceGroup;
use Google\Cloud\Compute\V1\InstanceGroupsClient;

/**
 * @param string $instanceGroup The name of the instance group.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function get_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Call the API and handle any network failures.
    try {
        /** @var InstanceGroup $response */
        $response = $instanceGroupsClient->get($instanceGroup, $project, $zone);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    get_sample($instanceGroup, $project, $zone);
}

insert

Creates an instance group in the specified project using the parameters that are included in the request.

Parameters
Name	Description
`instanceGroupResource`	`Google\Cloud\Compute\V1\InstanceGroup` The body resource for this request
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where you want to create the instance group.
`optionalArgs`	`array` Optional.
`↳ requestId`	`string` An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\OperationResponse;
use Google\Cloud\Compute\V1\InstanceGroup;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Rpc\Status;

/**
 * @param string $project Project ID for this request.
 * @param string $zone    The name of the zone where you want to create the instance group.
 */
function insert_sample(string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $instanceGroupResource = new InstanceGroup();

    // Call the API and handle any network failures.
    try {
        /** @var OperationResponse $response */
        $response = $instanceGroupsClient->insert($instanceGroupResource, $project, $zone);
        $response->pollUntilComplete();

        if ($response->operationSucceeded()) {
            printf('Operation completed successfully.' . PHP_EOL);
        } else {
            /** @var Status $error */
            $error = $response->getError();
            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    insert_sample($project, $zone);
}

list

Retrieves the list of zonal instance group resources contained within the specified zone. For managed instance groups, use the instanceGroupManagers or regionInstanceGroupManagers methods instead.

Parameters
Name	Description
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ filter`	`string` A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. These two types of filter expressions cannot be mixed in one request. If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: `labels.owner:` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: `(scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake")` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: `(cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true)` If you want to use a regular expression, use the `eq` (equal) or `ne` (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples: `fieldname eq unquoted literal` `fieldname eq 'single quoted literal'` `fieldname eq "double quoted literal"` `(fieldname1 eq literal) (fieldname2 ne "literal")` The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field. For example, to filter for instances that do not end with name "instance", you would use `name ne .*instance`. You cannot combine constraints on multiple fields using regular expressions.
`↳ maxResults`	`int` The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
`↳ orderBy`	`string` Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
`↳ pageToken`	`string` A page token is used to specify a page of values to be returned. If no page token is specified (the default), the first page of values will be returned. Any page token used here must have been generated by a previous call to the API.
`↳ returnPartialSuccess`	`bool` Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\PagedListResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\PagedListResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;

/**
 * @param string $project Project ID for this request.
 * @param string $zone    The name of the zone where the instance group is located.
 */
function list_sample(string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Call the API and handle any network failures.
    try {
        /** @var PagedListResponse $response */
        $response = $instanceGroupsClient->list($project, $zone);

        foreach ($response as $element) {
            printf('Element data: %s' . PHP_EOL, $element->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    list_sample($project, $zone);
}

listInstances

Lists the instances in the specified instance group. The orderBy query parameter is not supported. The filter query parameter is supported, but only for expressions that use eq (equal) or ne (not equal) operators.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group from which you want to generate a list of included instances.
`instanceGroupsListInstancesRequestResource`	`Google\Cloud\Compute\V1\InstanceGroupsListInstancesRequest` The body resource for this request
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ filter`	`string` A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. These two types of filter expressions cannot be mixed in one request. If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: `labels.owner:` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: `(scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake")` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: `(cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true)` If you want to use a regular expression, use the `eq` (equal) or `ne` (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples: `fieldname eq unquoted literal` `fieldname eq 'single quoted literal'` `fieldname eq "double quoted literal"` `(fieldname1 eq literal) (fieldname2 ne "literal")` The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field. For example, to filter for instances that do not end with name "instance", you would use `name ne .*instance`. You cannot combine constraints on multiple fields using regular expressions.
`↳ maxResults`	`int` The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
`↳ orderBy`	`string` Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
`↳ pageToken`	`string` A page token is used to specify a page of values to be returned. If no page token is specified (the default), the first page of values will be returned. Any page token used here must have been generated by a previous call to the API.
`↳ returnPartialSuccess`	`bool` Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\PagedListResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\PagedListResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Cloud\Compute\V1\InstanceGroupsListInstancesRequest;

/**
 * @param string $instanceGroup The name of the instance group from which you want to generate a list of included instances.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function list_instances_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $instanceGroupsListInstancesRequestResource = new InstanceGroupsListInstancesRequest();

    // Call the API and handle any network failures.
    try {
        /** @var PagedListResponse $response */
        $response = $instanceGroupsClient->listInstances(
            $instanceGroup,
            $instanceGroupsListInstancesRequestResource,
            $project,
            $zone
        );

        foreach ($response as $element) {
            printf('Element data: %s' . PHP_EOL, $element->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    list_instances_sample($instanceGroup, $project, $zone);
}

removeInstances

Removes one or more instances from the specified instance group, but does not delete those instances. If the group is part of a backend service that has enabled connection draining, it can take up to 60 seconds after the connection draining duration before the VM instance is removed or deleted.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group where the specified instances will be removed.
`instanceGroupsRemoveInstancesRequestResource`	`Google\Cloud\Compute\V1\InstanceGroupsRemoveInstancesRequest` The body resource for this request
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ requestId`	`string` An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\OperationResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Cloud\Compute\V1\InstanceGroupsRemoveInstancesRequest;
use Google\Rpc\Status;

/**
 * @param string $instanceGroup The name of the instance group where the specified instances will be removed.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function remove_instances_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $instanceGroupsRemoveInstancesRequestResource = new InstanceGroupsRemoveInstancesRequest();

    // Call the API and handle any network failures.
    try {
        /** @var OperationResponse $response */
        $response = $instanceGroupsClient->removeInstances(
            $instanceGroup,
            $instanceGroupsRemoveInstancesRequestResource,
            $project,
            $zone
        );
        $response->pollUntilComplete();

        if ($response->operationSucceeded()) {
            printf('Operation completed successfully.' . PHP_EOL);
        } else {
            /** @var Status $error */
            $error = $response->getError();
            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    remove_instances_sample($instanceGroup, $project, $zone);
}

setNamedPorts

Sets the named ports for the specified instance group.

Parameters
Name	Description
`instanceGroup`	`string` The name of the instance group where the named ports are updated.
`instanceGroupsSetNamedPortsRequestResource`	`Google\Cloud\Compute\V1\InstanceGroupsSetNamedPortsRequest` The body resource for this request
`project`	`string` Project ID for this request.
`zone`	`string` The name of the zone where the instance group is located.
`optionalArgs`	`array` Optional.
`↳ requestId`	`string` An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\OperationResponse;
use Google\Cloud\Compute\V1\InstanceGroupsClient;
use Google\Cloud\Compute\V1\InstanceGroupsSetNamedPortsRequest;
use Google\Rpc\Status;

/**
 * @param string $instanceGroup The name of the instance group where the named ports are updated.
 * @param string $project       Project ID for this request.
 * @param string $zone          The name of the zone where the instance group is located.
 */
function set_named_ports_sample(string $instanceGroup, string $project, string $zone): void
{
    // Create a client.
    $instanceGroupsClient = new InstanceGroupsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $instanceGroupsSetNamedPortsRequestResource = new InstanceGroupsSetNamedPortsRequest();

    // Call the API and handle any network failures.
    try {
        /** @var OperationResponse $response */
        $response = $instanceGroupsClient->setNamedPorts(
            $instanceGroup,
            $instanceGroupsSetNamedPortsRequestResource,
            $project,
            $zone
        );
        $response->pollUntilComplete();

        if ($response->operationSucceeded()) {
            printf('Operation completed successfully.' . PHP_EOL);
        } else {
            /** @var Status $error */
            $error = $response->getError();
            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $instanceGroup = '[INSTANCE_GROUP]';
    $project = '[PROJECT]';
    $zone = '[ZONE]';

    set_named_ports_sample($instanceGroup, $project, $zone);
}

getOperationsClient

Return an ZoneOperationsClient object with the same endpoint as $this.

Returns
Type	Description
`Google\Cloud\Compute\V1\ZoneOperationsClient`

resumeOperation

Resume an existing long running operation that was previously started by a long running API method. If $methodName is not provided, or does not match a long running API method, then the operation can still be resumed, but the OperationResponse object will not deserialize the final response.

Parameters
Name	Description
`operationName`	`string` The name of the long running operation
`methodName`	`string` The name of the method used to start the operation

Returns
Type	Description
`Google\ApiCore\OperationResponse`

Constants

SERVICE_NAME

Value: 'google.cloud.compute.v1.InstanceGroups'

The name of the service.

SERVICE_ADDRESS

Value: 'compute.googleapis.com'

The default address of the service.

DEFAULT_SERVICE_PORT

Value: 443

The default port of the service.

CODEGEN_NAME

Value: 'gapic'

The name of the code generator, to be included in the agent header.