Google Cloud Iam Credentials V1 Client - Class IAMCredentialsClient (1.0.6)

Reference documentation and code samples for the Google Cloud Iam Credentials V1 Client class IAMCredentialsClient.

Service Description: A service account is a special type of Google account that belongs to your application or a virtual machine (VM), instead of to an individual end user.

Your application assumes the identity of the service account to call Google APIs, so that the users aren't directly involved.

Service account credentials are used to temporarily assume the identity of the service account. Supported credential types include OAuth 2.0 access tokens, OpenID Connect ID tokens, self-signed JSON Web Tokens (JWTs), and more.

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:

$iAMCredentialsClient = new IAMCredentialsClient();
try {
    $formattedName = $iAMCredentialsClient->serviceAccountName('[PROJECT]', '[SERVICE_ACCOUNT]');
    $scope = [];
    $response = $iAMCredentialsClient->generateAccessToken($formattedName, $scope);
} finally {
    $iAMCredentialsClient->close();
}

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parseName method to extract the individual identifiers contained within formatted names that are returned by the API.

Methods

serviceAccountName

Formats a string containing the fully-qualified path to represent a service_account resource.

Parameters
Name	Description
`project`	`string`
`serviceAccount`	`string`

Returns
Type	Description
`string`	The formatted service_account resource.

parseName

Parses a formatted name string and returns an associative array of the components in the name.

The following name formats are supported: Template: Pattern

serviceAccount: projects/{project}/serviceAccounts/{service_account}

The optional $template argument can be supplied to specify a particular pattern, and must match one of the templates listed above. If no $template argument is provided, or if the $template argument does not match one of the templates listed, then parseName will check each of the supported templates, and return the first match.

Parameters
Name	Description
`formattedName`	`string` The formatted name string
`template`	`string` Optional name of template to match

Returns
Type	Description
`array`	An associative array from name component IDs to component values.

__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. May be either the string `rest` or `grpc`. Defaults to `grpc` if gRPC support is detected on the system. 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 = [ 'grpc' => [...], 'rest' => [...], ]; See the Google\ApiCore\Transport\GrpcTransport::build() and Google\ApiCore\Transport\RestTransport::build() methods 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.

generateAccessToken

Generates an OAuth 2.0 access token for a service account.

Parameters
Name	Description
`name`	`string` Required. The resource name of the service account for which the credentials are requested, in the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`scope`	`string[]` Required. Code to identify the scopes to be included in the OAuth 2.0 access token. See https://developers.google.com/identity/protocols/googlescopes for more information. At least one value required.
`optionalArgs`	`array` Optional.
`↳ delegates`	`string[]` The sequence of service accounts in a delegation chain. Each service account must be granted the `roles/iam.serviceAccountTokenCreator` role on its next service account in the chain. The last service account in the chain must be granted the `roles/iam.serviceAccountTokenCreator` role on the service account that is specified in the `name` field of the request. The delegates must have the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`↳ lifetime`	`Duration` The desired lifetime duration of the access token in seconds. Must be set to a value less than or equal to 3600 (1 hour). If a value is not specified, the token's lifetime will be set to a default value of one hour.
`↳ 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\Iam\Credentials\V1\GenerateAccessTokenResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\Iam\Credentials\V1\GenerateAccessTokenResponse;
use Google\Cloud\Iam\Credentials\V1\IAMCredentialsClient;

/**
 * @param string $formattedName The resource name of the service account for which the credentials
 *                              are requested, in the following format:
 *                              `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard
 *                              character is required; replacing it with a project ID is invalid. Please see
 *                              {@see IAMCredentialsClient::serviceAccountName()} for help formatting this field.
 * @param string $scopeElement  Code to identify the scopes to be included in the OAuth 2.0 access token.
 *                              See https://developers.google.com/identity/protocols/googlescopes for more
 *                              information.
 *                              At least one value required.
 */
function generate_access_token_sample(string $formattedName, string $scopeElement): void
{
    // Create a client.
    $iAMCredentialsClient = new IAMCredentialsClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $scope = [$scopeElement,];

    // Call the API and handle any network failures.
    try {
        /** @var GenerateAccessTokenResponse $response */
        $response = $iAMCredentialsClient->generateAccessToken($formattedName, $scope);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * 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
{
    $formattedName = IAMCredentialsClient::serviceAccountName('[PROJECT]', '[SERVICE_ACCOUNT]');
    $scopeElement = '[SCOPE]';

    generate_access_token_sample($formattedName, $scopeElement);
}

generateIdToken

Generates an OpenID Connect ID token for a service account.

Parameters
Name	Description
`name`	`string` Required. The resource name of the service account for which the credentials are requested, in the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`audience`	`string` Required. The audience for the token, such as the API or account that this token grants access to.
`optionalArgs`	`array` Optional.
`↳ delegates`	`string[]` The sequence of service accounts in a delegation chain. Each service account must be granted the `roles/iam.serviceAccountTokenCreator` role on its next service account in the chain. The last service account in the chain must be granted the `roles/iam.serviceAccountTokenCreator` role on the service account that is specified in the `name` field of the request. The delegates must have the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`↳ includeEmail`	`bool` Include the service account email in the token. If set to `true`, the token will contain `email` and `email_verified` claims.
`↳ 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\Iam\Credentials\V1\GenerateIdTokenResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\Iam\Credentials\V1\GenerateIdTokenResponse;
use Google\Cloud\Iam\Credentials\V1\IAMCredentialsClient;

/**
 * @param string $formattedName The resource name of the service account for which the credentials
 *                              are requested, in the following format:
 *                              `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard
 *                              character is required; replacing it with a project ID is invalid. Please see
 *                              {@see IAMCredentialsClient::serviceAccountName()} for help formatting this field.
 * @param string $audience      The audience for the token, such as the API or account that this token
 *                              grants access to.
 */
function generate_id_token_sample(string $formattedName, string $audience): void
{
    // Create a client.
    $iAMCredentialsClient = new IAMCredentialsClient();

    // Call the API and handle any network failures.
    try {
        /** @var GenerateIdTokenResponse $response */
        $response = $iAMCredentialsClient->generateIdToken($formattedName, $audience);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * 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
{
    $formattedName = IAMCredentialsClient::serviceAccountName('[PROJECT]', '[SERVICE_ACCOUNT]');
    $audience = '[AUDIENCE]';

    generate_id_token_sample($formattedName, $audience);
}

signBlob

Signs a blob using a service account's system-managed private key.

Parameters
Name	Description
`name`	`string` Required. The resource name of the service account for which the credentials are requested, in the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`payload`	`string` Required. The bytes to sign.
`optionalArgs`	`array` Optional.
`↳ delegates`	`string[]` The sequence of service accounts in a delegation chain. Each service account must be granted the `roles/iam.serviceAccountTokenCreator` role on its next service account in the chain. The last service account in the chain must be granted the `roles/iam.serviceAccountTokenCreator` role on the service account that is specified in the `name` field of the request. The delegates must have the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`↳ 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\Iam\Credentials\V1\SignBlobResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\Iam\Credentials\V1\IAMCredentialsClient;
use Google\Cloud\Iam\Credentials\V1\SignBlobResponse;

/**
 * @param string $formattedName The resource name of the service account for which the credentials
 *                              are requested, in the following format:
 *                              `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard
 *                              character is required; replacing it with a project ID is invalid. Please see
 *                              {@see IAMCredentialsClient::serviceAccountName()} for help formatting this field.
 * @param string $payload       The bytes to sign.
 */
function sign_blob_sample(string $formattedName, string $payload): void
{
    // Create a client.
    $iAMCredentialsClient = new IAMCredentialsClient();

    // Call the API and handle any network failures.
    try {
        /** @var SignBlobResponse $response */
        $response = $iAMCredentialsClient->signBlob($formattedName, $payload);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * 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
{
    $formattedName = IAMCredentialsClient::serviceAccountName('[PROJECT]', '[SERVICE_ACCOUNT]');
    $payload = '...';

    sign_blob_sample($formattedName, $payload);
}

signJwt

Signs a JWT using a service account's system-managed private key.

Parameters
Name	Description
`name`	`string` Required. The resource name of the service account for which the credentials are requested, in the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`payload`	`string` Required. The JWT payload to sign: a JSON object that contains a JWT Claims Set.
`optionalArgs`	`array` Optional.
`↳ delegates`	`string[]` The sequence of service accounts in a delegation chain. Each service account must be granted the `roles/iam.serviceAccountTokenCreator` role on its next service account in the chain. The last service account in the chain must be granted the `roles/iam.serviceAccountTokenCreator` role on the service account that is specified in the `name` field of the request. The delegates must have the following format: `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard character is required; replacing it with a project ID is invalid.
`↳ 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\Iam\Credentials\V1\SignJwtResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\Iam\Credentials\V1\IAMCredentialsClient;
use Google\Cloud\Iam\Credentials\V1\SignJwtResponse;

/**
 * @param string $formattedName The resource name of the service account for which the credentials
 *                              are requested, in the following format:
 *                              `projects/-/serviceAccounts/{ACCOUNT_EMAIL_OR_UNIQUEID}`. The `-` wildcard
 *                              character is required; replacing it with a project ID is invalid. Please see
 *                              {@see IAMCredentialsClient::serviceAccountName()} for help formatting this field.
 * @param string $payload       The JWT payload to sign: a JSON object that contains a JWT Claims Set.
 */
function sign_jwt_sample(string $formattedName, string $payload): void
{
    // Create a client.
    $iAMCredentialsClient = new IAMCredentialsClient();

    // Call the API and handle any network failures.
    try {
        /** @var SignJwtResponse $response */
        $response = $iAMCredentialsClient->signJwt($formattedName, $payload);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * 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
{
    $formattedName = IAMCredentialsClient::serviceAccountName('[PROJECT]', '[SERVICE_ACCOUNT]');
    $payload = '[PAYLOAD]';

    sign_jwt_sample($formattedName, $payload);
}

Constants

SERVICE_NAME

Value: 'google.iam.credentials.v1.IAMCredentials'

The name of the service.

SERVICE_ADDRESS

Value: 'iamcredentials.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.