<?php
/*
 * Copyright 2023 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
 *
 *     https://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.
 */

/*
 * GENERATED CODE WARNING
 * Generated by gapic-generator-php from the file
 * https://github.com/googleapis/googleapis/blob/master/google/pubsub/v1/pubsub.proto
 * Updates to the above are reflected here through a refresh process.
 */

namespace Google\Cloud\PubSub\V1\Client;

use Google\ApiCore\ApiException;
use Google\ApiCore\BidiStream;
use Google\ApiCore\CredentialsWrapper;
use Google\ApiCore\GapicClientTrait;
use Google\ApiCore\PagedListResponse;
use Google\ApiCore\ResourceHelperTrait;
use Google\ApiCore\RetrySettings;
use Google\ApiCore\Transport\TransportInterface;
use Google\ApiCore\ValidationException;
use Google\Auth\FetchAuthTokenInterface;
use Google\Cloud\Iam\V1\GetIamPolicyRequest;
use Google\Cloud\Iam\V1\Policy;
use Google\Cloud\Iam\V1\SetIamPolicyRequest;
use Google\Cloud\Iam\V1\TestIamPermissionsRequest;
use Google\Cloud\Iam\V1\TestIamPermissionsResponse;
use Google\Cloud\PubSub\V1\AcknowledgeRequest;
use Google\Cloud\PubSub\V1\CreateSnapshotRequest;
use Google\Cloud\PubSub\V1\DeleteSnapshotRequest;
use Google\Cloud\PubSub\V1\DeleteSubscriptionRequest;
use Google\Cloud\PubSub\V1\GetSnapshotRequest;
use Google\Cloud\PubSub\V1\GetSubscriptionRequest;
use Google\Cloud\PubSub\V1\ListSnapshotsRequest;
use Google\Cloud\PubSub\V1\ListSubscriptionsRequest;
use Google\Cloud\PubSub\V1\ModifyAckDeadlineRequest;
use Google\Cloud\PubSub\V1\ModifyPushConfigRequest;
use Google\Cloud\PubSub\V1\PullRequest;
use Google\Cloud\PubSub\V1\PullResponse;
use Google\Cloud\PubSub\V1\SeekRequest;
use Google\Cloud\PubSub\V1\SeekResponse;
use Google\Cloud\PubSub\V1\Snapshot;
use Google\Cloud\PubSub\V1\Subscription;
use Google\Cloud\PubSub\V1\UpdateSnapshotRequest;
use Google\Cloud\PubSub\V1\UpdateSubscriptionRequest;
use GuzzleHttp\Promise\PromiseInterface;

/**
 * Service Description: The service that an application uses to manipulate subscriptions and to
 * consume messages from a subscription via the `Pull` method or by
 * establishing a bi-directional stream using the `StreamingPull` method.
 *
 * This class provides the ability to make remote calls to the backing service through method
 * calls that map to API methods.
 *
 * 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.
 *
 * @method PromiseInterface acknowledgeAsync(AcknowledgeRequest $request, array $optionalArgs = [])
 * @method PromiseInterface createSnapshotAsync(CreateSnapshotRequest $request, array $optionalArgs = [])
 * @method PromiseInterface createSubscriptionAsync(Subscription $request, array $optionalArgs = [])
 * @method PromiseInterface deleteSnapshotAsync(DeleteSnapshotRequest $request, array $optionalArgs = [])
 * @method PromiseInterface deleteSubscriptionAsync(DeleteSubscriptionRequest $request, array $optionalArgs = [])
 * @method PromiseInterface getSnapshotAsync(GetSnapshotRequest $request, array $optionalArgs = [])
 * @method PromiseInterface getSubscriptionAsync(GetSubscriptionRequest $request, array $optionalArgs = [])
 * @method PromiseInterface listSnapshotsAsync(ListSnapshotsRequest $request, array $optionalArgs = [])
 * @method PromiseInterface listSubscriptionsAsync(ListSubscriptionsRequest $request, array $optionalArgs = [])
 * @method PromiseInterface modifyAckDeadlineAsync(ModifyAckDeadlineRequest $request, array $optionalArgs = [])
 * @method PromiseInterface modifyPushConfigAsync(ModifyPushConfigRequest $request, array $optionalArgs = [])
 * @method PromiseInterface pullAsync(PullRequest $request, array $optionalArgs = [])
 * @method PromiseInterface seekAsync(SeekRequest $request, array $optionalArgs = [])
 * @method PromiseInterface updateSnapshotAsync(UpdateSnapshotRequest $request, array $optionalArgs = [])
 * @method PromiseInterface updateSubscriptionAsync(UpdateSubscriptionRequest $request, array $optionalArgs = [])
 * @method PromiseInterface getIamPolicyAsync(GetIamPolicyRequest $request, array $optionalArgs = [])
 * @method PromiseInterface setIamPolicyAsync(SetIamPolicyRequest $request, array $optionalArgs = [])
 * @method PromiseInterface testIamPermissionsAsync(TestIamPermissionsRequest $request, array $optionalArgs = [])
 */
final class SubscriberClient
{
    use GapicClientTrait;
    use ResourceHelperTrait;

    /** The name of the service. */
    private const SERVICE_NAME = 'google.pubsub.v1.Subscriber';

    /**
     * The default address of the service.
     *
     * @deprecated SERVICE_ADDRESS_TEMPLATE should be used instead.
     */
    private const SERVICE_ADDRESS = 'pubsub.googleapis.com';

    /** The address template of the service. */
    private const SERVICE_ADDRESS_TEMPLATE = 'pubsub.UNIVERSE_DOMAIN';

    /** The default port of the service. */
    private const DEFAULT_SERVICE_PORT = 443;

    /** The name of the code generator, to be included in the agent header. */
    private const CODEGEN_NAME = 'gapic';

    /** The default scopes required by the service. */
    public static $serviceScopes = [
        'https://www.googleapis.com/auth/cloud-platform',
        'https://www.googleapis.com/auth/pubsub',
    ];

    private static function getClientDefaults()
    {
        return [
            'serviceName' => self::SERVICE_NAME,
            'apiEndpoint' => self::SERVICE_ADDRESS . ':' . self::DEFAULT_SERVICE_PORT,
            'clientConfig' => __DIR__ . '/../resources/subscriber_client_config.json',
            'descriptorsConfigPath' => __DIR__ . '/../resources/subscriber_descriptor_config.php',
            'gcpApiConfigPath' => __DIR__ . '/../resources/subscriber_grpc_config.json',
            'credentialsConfig' => [
                'defaultScopes' => self::$serviceScopes,
            ],
            'transportConfig' => [
                'rest' => [
                    'restClientConfigPath' => __DIR__ . '/../resources/subscriber_rest_client_config.php',
                ],
            ],
        ];
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * _deleted-topic_ resource.
     *
     * @return string The formatted _deleted-topic_ resource.
     */
    public static function deletedTopicName(): string
    {
        return self::getPathTemplate('deletedTopic')->render([]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a project
     * resource.
     *
     * @param string $project
     *
     * @return string The formatted project resource.
     */
    public static function projectName(string $project): string
    {
        return self::getPathTemplate('project')->render([
            'project' => $project,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_topic resource.
     *
     * @param string $project
     * @param string $topic
     *
     * @return string The formatted project_topic resource.
     */
    public static function projectTopicName(string $project, string $topic): string
    {
        return self::getPathTemplate('projectTopic')->render([
            'project' => $project,
            'topic' => $topic,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a snapshot
     * resource.
     *
     * @param string $project
     * @param string $snapshot
     *
     * @return string The formatted snapshot resource.
     */
    public static function snapshotName(string $project, string $snapshot): string
    {
        return self::getPathTemplate('snapshot')->render([
            'project' => $project,
            'snapshot' => $snapshot,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a subscription
     * resource.
     *
     * @param string $project
     * @param string $subscription
     *
     * @return string The formatted subscription resource.
     */
    public static function subscriptionName(string $project, string $subscription): string
    {
        return self::getPathTemplate('subscription')->render([
            'project' => $project,
            'subscription' => $subscription,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a topic
     * resource.
     *
     * @param string $project
     * @param string $topic
     *
     * @return string The formatted topic resource.
     */
    public static function topicName(string $project, string $topic): string
    {
        return self::getPathTemplate('topic')->render([
            'project' => $project,
            'topic' => $topic,
        ]);
    }

    /**
     * Parses a formatted name string and returns an associative array of the components in the name.
     * The following name formats are supported:
     * Template: Pattern
     * - deletedTopic: _deleted-topic_
     * - project: projects/{project}
     * - projectTopic: projects/{project}/topics/{topic}
     * - snapshot: projects/{project}/snapshots/{snapshot}
     * - subscription: projects/{project}/subscriptions/{subscription}
     * - topic: projects/{project}/topics/{topic}
     *
     * 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.
     *
     * @param string $formattedName The formatted name string
     * @param string $template      Optional name of template to match
     *
     * @return array An associative array from name component IDs to component values.
     *
     * @throws ValidationException If $formattedName could not be matched.
     */
    public static function parseName(string $formattedName, string $template = null): array
    {
        return self::parseFormattedName($formattedName, $template);
    }

    /**
     * Constructor.
     *
     * @param array $options {
     *     Optional. Options for configuring the service API wrapper.
     *
     *     @type string $apiEndpoint
     *           The address of the API remote host. May optionally include the port, formatted
     *           as "<uri>:<port>". Default 'pubsub.googleapis.com:443'.
     *     @type string|array|FetchAuthTokenInterface|CredentialsWrapper $credentials
     *           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
     *           {@see \Google\Auth\FetchAuthTokenInterface} object or
     *           {@see \Google\ApiCore\CredentialsWrapper} object. Note that when one of these
     *           objects are provided, any settings in $credentialsConfig will be ignored.
     *     @type array $credentialsConfig
     *           Options used to configure credentials, including auth token caching, for the
     *           client. For a full list of supporting configuration options, see
     *           {@see \Google\ApiCore\CredentialsWrapper::build()} .
     *     @type bool $disableRetries
     *           Determines whether or not retries defined by the client configuration should be
     *           disabled. Defaults to `false`.
     *     @type string|array $clientConfig
     *           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.
     *     @type string|TransportInterface $transport
     *           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 {@see \Google\ApiCore\Transport\TransportInterface} object. Note
     *           that when this object is provided, any settings in $transportConfig, and any
     *           $apiEndpoint setting, will be ignored.
     *     @type array $transportConfig
     *           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 {@see \Google\ApiCore\Transport\GrpcTransport::build()} and
     *           {@see \Google\ApiCore\Transport\RestTransport::build()} methods for the
     *           supported options.
     *     @type callable $clientCertSource
     *           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.
     * }
     *
     * @throws ValidationException
     */
    public function __construct(array $options = [])
    {
        $clientOptions = $this->buildClientOptions($options);
        $this->setClientOptions($clientOptions);
    }

    /** Handles execution of the async variants for each documented method. */
    public function __call($method, $args)
    {
        if (substr($method, -5) !== 'Async') {
            trigger_error('Call to undefined method ' . __CLASS__ . "::$method()", E_USER_ERROR);
        }

        array_unshift($args, substr($method, 0, -5));
        return call_user_func_array([$this, 'startAsyncCall'], $args);
    }

    /**
     * Acknowledges the messages associated with the `ack_ids` in the
     * `AcknowledgeRequest`. The Pub/Sub system can remove the relevant messages
     * from the subscription.
     *
     * Acknowledging a message whose ack deadline has expired may succeed,
     * but such a message may be redelivered later. Acknowledging a message more
     * than once will not result in an error.
     *
     * The async variant is {@see SubscriberClient::acknowledgeAsync()} .
     *
     * @example samples/V1/SubscriberClient/acknowledge.php
     *
     * @param AcknowledgeRequest $request     A request to house fields associated with the call.
     * @param array              $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function acknowledge(AcknowledgeRequest $request, array $callOptions = []): void
    {
        $this->startApiCall('Acknowledge', $request, $callOptions)->wait();
    }

    /**
     * Creates a snapshot from the requested subscription. Snapshots are used in
     * [Seek](https://cloud.google.com/pubsub/docs/replay-overview) operations,
     * which allow you to manage message acknowledgments in bulk. That is, you can
     * set the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot.
     * If the snapshot already exists, returns `ALREADY_EXISTS`.
     * If the requested subscription doesn't exist, returns `NOT_FOUND`.
     * If the backlog in the subscription is too old -- and the resulting snapshot
     * would expire in less than 1 hour -- then `FAILED_PRECONDITION` is returned.
     * See also the `Snapshot.expire_time` field. If the name is not provided in
     * the request, the server will assign a random
     * name for this snapshot on the same project as the subscription, conforming
     * to the [resource name format]
     * (https://cloud.google.com/pubsub/docs/pubsub-basics#resource_names). The
     * generated name is populated in the returned Snapshot object. Note that for
     * REST API requests, you must specify a name in the request.
     *
     * The async variant is {@see SubscriberClient::createSnapshotAsync()} .
     *
     * @example samples/V1/SubscriberClient/create_snapshot.php
     *
     * @param CreateSnapshotRequest $request     A request to house fields associated with the call.
     * @param array                 $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Snapshot
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function createSnapshot(CreateSnapshotRequest $request, array $callOptions = []): Snapshot
    {
        return $this->startApiCall('CreateSnapshot', $request, $callOptions)->wait();
    }

    /**
     * Creates a subscription to a given topic. See the [resource name rules]
     * (https://cloud.google.com/pubsub/docs/pubsub-basics#resource_names).
     * If the subscription already exists, returns `ALREADY_EXISTS`.
     * If the corresponding topic doesn't exist, returns `NOT_FOUND`.
     *
     * If the name is not provided in the request, the server will assign a random
     * name for this subscription on the same project as the topic, conforming
     * to the [resource name format]
     * (https://cloud.google.com/pubsub/docs/pubsub-basics#resource_names). The
     * generated name is populated in the returned Subscription object. Note that
     * for REST API requests, you must specify a name in the request.
     *
     * The async variant is {@see SubscriberClient::createSubscriptionAsync()} .
     *
     * @example samples/V1/SubscriberClient/create_subscription.php
     *
     * @param Subscription $request     A request to house fields associated with the call.
     * @param array        $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Subscription
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function createSubscription(Subscription $request, array $callOptions = []): Subscription
    {
        return $this->startApiCall('CreateSubscription', $request, $callOptions)->wait();
    }

    /**
     * Removes an existing snapshot. Snapshots are used in [Seek]
     * (https://cloud.google.com/pubsub/docs/replay-overview) operations, which
     * allow you to manage message acknowledgments in bulk. That is, you can set
     * the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot.
     * When the snapshot is deleted, all messages retained in the snapshot
     * are immediately dropped. After a snapshot is deleted, a new one may be
     * created with the same name, but the new one has no association with the old
     * snapshot or its subscription, unless the same subscription is specified.
     *
     * The async variant is {@see SubscriberClient::deleteSnapshotAsync()} .
     *
     * @example samples/V1/SubscriberClient/delete_snapshot.php
     *
     * @param DeleteSnapshotRequest $request     A request to house fields associated with the call.
     * @param array                 $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function deleteSnapshot(DeleteSnapshotRequest $request, array $callOptions = []): void
    {
        $this->startApiCall('DeleteSnapshot', $request, $callOptions)->wait();
    }

    /**
     * Deletes an existing subscription. All messages retained in the subscription
     * are immediately dropped. Calls to `Pull` after deletion will return
     * `NOT_FOUND`. After a subscription is deleted, a new one may be created with
     * the same name, but the new one has no association with the old
     * subscription or its topic unless the same topic is specified.
     *
     * The async variant is {@see SubscriberClient::deleteSubscriptionAsync()} .
     *
     * @example samples/V1/SubscriberClient/delete_subscription.php
     *
     * @param DeleteSubscriptionRequest $request     A request to house fields associated with the call.
     * @param array                     $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function deleteSubscription(DeleteSubscriptionRequest $request, array $callOptions = []): void
    {
        $this->startApiCall('DeleteSubscription', $request, $callOptions)->wait();
    }

    /**
     * Gets the configuration details of a snapshot. Snapshots are used in
     * [Seek](https://cloud.google.com/pubsub/docs/replay-overview) operations,
     * which allow you to manage message acknowledgments in bulk. That is, you can
     * set the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot.
     *
     * The async variant is {@see SubscriberClient::getSnapshotAsync()} .
     *
     * @example samples/V1/SubscriberClient/get_snapshot.php
     *
     * @param GetSnapshotRequest $request     A request to house fields associated with the call.
     * @param array              $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Snapshot
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getSnapshot(GetSnapshotRequest $request, array $callOptions = []): Snapshot
    {
        return $this->startApiCall('GetSnapshot', $request, $callOptions)->wait();
    }

    /**
     * Gets the configuration details of a subscription.
     *
     * The async variant is {@see SubscriberClient::getSubscriptionAsync()} .
     *
     * @example samples/V1/SubscriberClient/get_subscription.php
     *
     * @param GetSubscriptionRequest $request     A request to house fields associated with the call.
     * @param array                  $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Subscription
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getSubscription(GetSubscriptionRequest $request, array $callOptions = []): Subscription
    {
        return $this->startApiCall('GetSubscription', $request, $callOptions)->wait();
    }

    /**
     * Lists the existing snapshots. Snapshots are used in [Seek](
     * https://cloud.google.com/pubsub/docs/replay-overview) operations, which
     * allow you to manage message acknowledgments in bulk. That is, you can set
     * the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot.
     *
     * The async variant is {@see SubscriberClient::listSnapshotsAsync()} .
     *
     * @example samples/V1/SubscriberClient/list_snapshots.php
     *
     * @param ListSnapshotsRequest $request     A request to house fields associated with the call.
     * @param array                $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return PagedListResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function listSnapshots(ListSnapshotsRequest $request, array $callOptions = []): PagedListResponse
    {
        return $this->startApiCall('ListSnapshots', $request, $callOptions);
    }

    /**
     * Lists matching subscriptions.
     *
     * The async variant is {@see SubscriberClient::listSubscriptionsAsync()} .
     *
     * @example samples/V1/SubscriberClient/list_subscriptions.php
     *
     * @param ListSubscriptionsRequest $request     A request to house fields associated with the call.
     * @param array                    $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return PagedListResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function listSubscriptions(ListSubscriptionsRequest $request, array $callOptions = []): PagedListResponse
    {
        return $this->startApiCall('ListSubscriptions', $request, $callOptions);
    }

    /**
     * Modifies the ack deadline for a specific message. This method is useful
     * to indicate that more time is needed to process a message by the
     * subscriber, or to make the message available for redelivery if the
     * processing was interrupted. Note that this does not modify the
     * subscription-level `ackDeadlineSeconds` used for subsequent messages.
     *
     * The async variant is {@see SubscriberClient::modifyAckDeadlineAsync()} .
     *
     * @example samples/V1/SubscriberClient/modify_ack_deadline.php
     *
     * @param ModifyAckDeadlineRequest $request     A request to house fields associated with the call.
     * @param array                    $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function modifyAckDeadline(ModifyAckDeadlineRequest $request, array $callOptions = []): void
    {
        $this->startApiCall('ModifyAckDeadline', $request, $callOptions)->wait();
    }

    /**
     * Modifies the `PushConfig` for a specified subscription.
     *
     * This may be used to change a push subscription to a pull one (signified by
     * an empty `PushConfig`) or vice versa, or change the endpoint URL and other
     * attributes of a push subscription. Messages will accumulate for delivery
     * continuously through the call regardless of changes to the `PushConfig`.
     *
     * The async variant is {@see SubscriberClient::modifyPushConfigAsync()} .
     *
     * @example samples/V1/SubscriberClient/modify_push_config.php
     *
     * @param ModifyPushConfigRequest $request     A request to house fields associated with the call.
     * @param array                   $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function modifyPushConfig(ModifyPushConfigRequest $request, array $callOptions = []): void
    {
        $this->startApiCall('ModifyPushConfig', $request, $callOptions)->wait();
    }

    /**
     * Pulls messages from the server.
     *
     * The async variant is {@see SubscriberClient::pullAsync()} .
     *
     * @example samples/V1/SubscriberClient/pull.php
     *
     * @param PullRequest $request     A request to house fields associated with the call.
     * @param array       $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return PullResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function pull(PullRequest $request, array $callOptions = []): PullResponse
    {
        return $this->startApiCall('Pull', $request, $callOptions)->wait();
    }

    /**
     * Seeks an existing subscription to a point in time or to a given snapshot,
     * whichever is provided in the request. Snapshots are used in [Seek]
     * (https://cloud.google.com/pubsub/docs/replay-overview) operations, which
     * allow you to manage message acknowledgments in bulk. That is, you can set
     * the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot. Note that both the subscription and the
     * snapshot must be on the same topic.
     *
     * The async variant is {@see SubscriberClient::seekAsync()} .
     *
     * @example samples/V1/SubscriberClient/seek.php
     *
     * @param SeekRequest $request     A request to house fields associated with the call.
     * @param array       $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return SeekResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function seek(SeekRequest $request, array $callOptions = []): SeekResponse
    {
        return $this->startApiCall('Seek', $request, $callOptions)->wait();
    }

    /**
     * Establishes a stream with the server, which sends messages down to the
     * client. The client streams acknowledgements and ack deadline modifications
     * back to the server. The server will close the stream and return the status
     * on any error. The server may close the stream with status `UNAVAILABLE` to
     * reassign server-side resources, in which case, the client should
     * re-establish the stream. Flow control can be achieved by configuring the
     * underlying RPC channel.
     *
     * @example samples/V1/SubscriberClient/streaming_pull.php
     *
     * @param array $callOptions {
     *     Optional.
     *
     *     @type int $timeoutMillis
     *           Timeout to use for this call.
     * }
     *
     * @return BidiStream
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function streamingPull(array $callOptions = []): BidiStream
    {
        return $this->startApiCall('StreamingPull', null, $callOptions);
    }

    /**
     * Updates an existing snapshot by updating the fields specified in the update
     * mask. Snapshots are used in
     * [Seek](https://cloud.google.com/pubsub/docs/replay-overview) operations,
     * which allow you to manage message acknowledgments in bulk. That is, you can
     * set the acknowledgment state of messages in an existing subscription to the
     * state captured by a snapshot.
     *
     * The async variant is {@see SubscriberClient::updateSnapshotAsync()} .
     *
     * @example samples/V1/SubscriberClient/update_snapshot.php
     *
     * @param UpdateSnapshotRequest $request     A request to house fields associated with the call.
     * @param array                 $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Snapshot
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function updateSnapshot(UpdateSnapshotRequest $request, array $callOptions = []): Snapshot
    {
        return $this->startApiCall('UpdateSnapshot', $request, $callOptions)->wait();
    }

    /**
     * Updates an existing subscription by updating the fields specified in the
     * update mask. Note that certain properties of a subscription, such as its
     * topic, are not modifiable.
     *
     * The async variant is {@see SubscriberClient::updateSubscriptionAsync()} .
     *
     * @example samples/V1/SubscriberClient/update_subscription.php
     *
     * @param UpdateSubscriptionRequest $request     A request to house fields associated with the call.
     * @param array                     $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Subscription
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function updateSubscription(UpdateSubscriptionRequest $request, array $callOptions = []): Subscription
    {
        return $this->startApiCall('UpdateSubscription', $request, $callOptions)->wait();
    }

    /**
     * Gets the access control policy for a resource. Returns an empty policy
    if the resource exists and does not have a policy set.
     *
     * The async variant is {@see SubscriberClient::getIamPolicyAsync()} .
     *
     * @example samples/V1/SubscriberClient/get_iam_policy.php
     *
     * @param GetIamPolicyRequest $request     A request to house fields associated with the call.
     * @param array               $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Policy
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getIamPolicy(GetIamPolicyRequest $request, array $callOptions = []): Policy
    {
        return $this->startApiCall('GetIamPolicy', $request, $callOptions)->wait();
    }

    /**
     * Sets the access control policy on the specified resource. Replaces
    any existing policy.

    Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED`
    errors.
     *
     * The async variant is {@see SubscriberClient::setIamPolicyAsync()} .
     *
     * @example samples/V1/SubscriberClient/set_iam_policy.php
     *
     * @param SetIamPolicyRequest $request     A request to house fields associated with the call.
     * @param array               $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return Policy
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function setIamPolicy(SetIamPolicyRequest $request, array $callOptions = []): Policy
    {
        return $this->startApiCall('SetIamPolicy', $request, $callOptions)->wait();
    }

    /**
     * Returns permissions that a caller has on the specified resource. If the
    resource does not exist, this will return an empty set of
    permissions, not a `NOT_FOUND` error.

    Note: This operation is designed to be used for building
    permission-aware UIs and command-line tools, not for authorization
    checking. This operation may "fail open" without warning.
     *
     * The async variant is {@see SubscriberClient::testIamPermissionsAsync()} .
     *
     * @example samples/V1/SubscriberClient/test_iam_permissions.php
     *
     * @param TestIamPermissionsRequest $request     A request to house fields associated with the call.
     * @param array                     $callOptions {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return TestIamPermissionsResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function testIamPermissions(TestIamPermissionsRequest $request, array $callOptions = []): TestIamPermissionsResponse
    {
        return $this->startApiCall('TestIamPermissions', $request, $callOptions)->wait();
    }
}