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Editing: ServiceBuilder.php

<?php
/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Google\Cloud\Core;

use Google\Auth\HttpHandler\Guzzle6HttpHandler;
use Google\Auth\HttpHandler\HttpHandlerFactory;
use Google\Cloud\BigQuery\BigQueryClient;
use Google\Cloud\Datastore\DatastoreClient;
use Google\Cloud\Firestore\FirestoreClient;
use Google\Cloud\Language\LanguageClient as DeprecatedLanguageClient;
use Google\Cloud\Language\V2\Client\LanguageServiceClient;
use Google\Cloud\Logging\LoggingClient;
use Google\Cloud\PubSub\PubSubClient;
use Google\Cloud\Spanner\SpannerClient;
use Google\Cloud\Speech\SpeechClient as DeprecatedSpeechClient;
use Google\Cloud\Speech\V2\Client\SpeechClient;
use Google\Cloud\Storage\StorageClient;
use Google\Cloud\Trace\TraceClient;
use Google\Cloud\Translate\V2\TranslateClient as DeprecatedTranslateClient;
use Google\Cloud\Translate\V3\Client\TranslationServiceClient;
use Google\Cloud\Vision\V1\Client\ImageAnnotatorClient;
use Google\Cloud\Vision\VisionClient as DeprecatedVisionClient;
use Psr\Cache\CacheItemPoolInterface;

/**
 * Google Cloud Platform is a set of modular cloud-based services that allow you
 * to create anything from simple websites to complex applications.
 *
 * This API aims to expose access to these services in a way that is intuitive
 * and easy to use for PHP enthusiasts. The ServiceBuilder instance exposes
 * factory methods which grant access to the various services contained within
 * the API.
 *
 * Configuration is simple. Pass in an array of configuration options to the
 * constructor up front which can be shared between clients or specify the
 * options for the specific services you wish to access, e.g. Datastore, or
 * Storage.
 *
 * Please note that unless otherwise noted the examples below take advantage of
 * [Application Default Credentials](https://developers.google.com/identity/protocols/application-default-credentials).
 *
 * @deprecated
 */
class ServiceBuilder
{
    /**
     * @var array Configuration options to be used between clients.
     */
    private $config = [];

/**
     * Pass in an array of configuration options which will be shared between
     * clients.
     *
     * Example:
     * ```
     * use Google\Cloud\Core\ServiceBuilder;
     *
     * $cloud = new ServiceBuilder([
     *     'projectId' => 'myAwesomeProject'
     * ]);
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options.
     *
     *     @type string $projectId The project ID from the Google Developer's
     *           Console.
     *     @type CacheItemPoolInterface $authCache A cache for storing access
     *           tokens. **Defaults to** a simple in memory implementation.
     *     @type array $authCacheOptions Cache configuration options.
     *     @type callable $authHttpHandler A handler used to deliver Psr7
     *           requests specifically for authentication.
     *     @type callable $httpHandler A handler used to deliver Psr7 requests.
     *           Only valid for requests sent over REST.
     *     @type array $keyFile [DEPRECATED]
     *     @type string $keyFilePath [DEPRECATED]
     *     @type int $retries Number of retries for a failed request.
     *           **Defaults to** `3`.
     *     @type array $scopes Scopes to be used for the request.
     * }
     */
    public function __construct(array $config = [])
    {
        $this->config = $this->resolveConfig($config);
    }

/**
     * Google Cloud BigQuery allows you to create, manage, share and query
     * data. Find more information at the
     * [Google Cloud BigQuery Docs](https://cloud.google.com/bigquery/docs).
     *
     * Example:
     * ```
     * $bigQuery = $cloud->bigQuery();
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options. See
     *     {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the other available options.
     *
     *     @type bool $returnInt64AsObject If true, 64 bit integers will be
     *           returned as a {@see \Google\Cloud\Core\Int64} object for 32 bit
     *           platform compatibility. **Defaults to** false.
     *     @type string $location If provided, determines the default geographic
     *           location used when creating datasets and managing jobs. Please
     *           note: This is only required for jobs started outside of the US
     *           and EU regions. Also, if location metadata has already been
     *           fetched over the network it will take precedent over this
     *           setting.
     * }
     * @return BigQueryClient
     */
    public function bigQuery(array $config = [])
    {
        return $this->createClient(BigQueryClient::class, 'bigquery', $config);
    }

/**
     * Google Cloud Datastore is a highly-scalable NoSQL database for your
     * applications. Find more information at the
     * [Google Cloud Datastore docs](https://cloud.google.com/datastore/docs/).
     *
     * Example:
     * ```
     * $datastore = $cloud->datastore();
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options. See
     *     {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the other available options.
     *
     *     @type bool $returnInt64AsObject If true, 64 bit integers will be
     *           returned as a {@see \Google\Cloud\Core\Int64} object for 32 bit
     *           platform compatibility. **Defaults to** false.
     * @return DatastoreClient
     */
    public function datastore(array $config = [])
    {
        return $this->createClient(DatastoreClient::class, 'datastore', $config);
    }

/**
     * Cloud Firestore is a flexible, scalable, realtime database for mobile,
     * web, and server development. Find more information at the
     * [Google Cloud firestore docs](https://cloud.google.com/firestore/docs/).
     *
     * Example:
     * ```
     * $firestore = $cloud->firestore();
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options. See
     *     {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the other available options.
     *
     *     @type bool $returnInt64AsObject If true, 64 bit integers will be
     *           returned as a {@see \Google\Cloud\Core\Int64} object for 32 bit
     *           platform compatibility. **Defaults to** false.
     * @return FirestoreClient
     */
    public function firestore(array $config = [])
    {
        return $this->createClient(FirestoreClient::class, 'firestore', $config);
    }

/**
     * Google Stackdriver Logging allows you to store, search, analyze, monitor,
     * and alert on log data and events from Google Cloud Platform and Amazon
     * Web Services. Find more information at the
     * [Google Stackdriver Logging docs](https://cloud.google.com/logging/docs/).
     *
     * Example:
     * ```
     * $logging = $cloud->logging();
     * ```
     *
     * @param array $config [optional] Configuration options. See
     *        {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the available options.
     * @return LoggingClient
     */
    public function logging(array $config = [])
    {
        return $this->createClient(LoggingClient::class, 'logging', $config);
    }

/**
     * Google Cloud Natural Language provides natural language understanding
     * technologies to developers, including sentiment analysis, entity
     * recognition, and syntax analysis. Currently only English, Spanish,
     * and Japanese textual context are supported. Find more information at the
     * [Google Cloud Natural Language docs](https://cloud.google.com/natural-language/docs/).
     *
     * Example:
     * ```
     * $language = $cloud->language();
     * ```
     *
     * @param array $config [optional] Configuration options. See
     *        {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the available options.
     * @return LanguageServiceClient
     */
    public function language(array $config = [])
    {
        if (class_exists(DeprecatedLanguageClient::class)) {
            return $this->createClient(DeprecatedLanguageClient::class, 'vision', $config);
        }
        throw new \BadMethodCallException(sprintf(
            'This method is no longer supported, create %s directly instead.',
            LanguageServiceClient::class
        ));
    }

/**
     * Google Cloud Pub/Sub allows you to send and receive messages between
     * independent applications. Find more information at the
     * [Google Cloud Pub/Sub docs](https://cloud.google.com/pubsub/docs/).
     *
     * Example:
     * ```
     * $pubsub = $cloud->pubsub(['projectId' => 'my-project']);
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options. See
     *     {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the other available options.
     *
     *     @type string $transport The transport type used for requests. May be
     *           either `grpc` or `rest`. **Defaults to** `grpc` if gRPC support
     *           is detected on the system.
     * @return PubSubClient
     */
    public function pubsub(array $config = [])
    {
        return $this->createClient(PubSubClient::class, 'pubsub', $config);
    }

/**
     * Google Cloud Spanner is a highly scalable, transactional, managed, NewSQL
     * database service. Find more information at
     * [Google Cloud Spanner API docs](https://cloud.google.com/spanner/).
     *
     * Example:
     * ```
     * $spanner = $cloud->spanner(['projectId' => 'my-project']);
     * ```
     *
     * @param array $config [optional] {
     *     Configuration options. See
     *     {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the other available options.
     *
     *     @type bool $returnInt64AsObject If true, 64 bit integers will be
     *           returned as a {@see \Google\Cloud\Core\Int64} object for 32 bit
     *           platform compatibility. **Defaults to** false.
     * }
     * @return SpannerClient
     */
    public function spanner(array $config = [])
    {
        return $this->createClient(SpannerClient::class, 'spanner', $config);
    }

/**
     * @deprecated
     * @see SpeechClient
     * @throws \BadMethodCallException
     */
    public function speech(array $config = [])
    {
        if (class_exists(DeprecatedSpeechClient::class)) {
            return $this->createClient(DeprecatedSpeechClient::class, 'speech', $config);
        }
        throw new \BadMethodCallException(sprintf(
            'This method is no longer supported, create %s directly instead.',
            SpeechClient::class
        ));
    }

/**
     * Google Cloud Storage allows you to store and retrieve data on Google's
     * infrastructure. Find more information at the
     * [Google Cloud Storage API docs](https://developers.google.com/storage).
     *
     * Example:
     * ```
     * $storage = $cloud->storage();
     * ```
     *
     * @param array $config [optional] Configuration options. See
     *        {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the available options.
     * @return StorageClient
     */
    public function storage(array $config = [])
    {
        return $this->createClient(StorageClient::class, 'storage', $config);
    }

/**
     * Google Stackdriver Trace allows you to collect latency data from your applications
     * and display it in the Google Cloud Platform Console. Find more information at
     * [Stackdriver Trace API docs](https://cloud.google.com/trace/docs/).
     *
     * Example:
     * ```
     * $trace = $cloud->trace();
     * ```
     *
     * @param array $config [optional] Configuration options. See
     *        {@see \Google\Cloud\Core\ServiceBuilder::__construct()} for the available options.
     * @return TraceClient
     */
    public function trace(array $config = [])
    {
        return $this->createClient(TraceClient::class, 'trace', $config);
    }

/**
     * @deprecated
     * @see ImageAnnotatorClient
     * @throws \BadMethodCallException
     */
    public function vision(array $config = [])
    {
        if (class_exists(DeprecatedVisionClient::class)) {
            return $this->createClient(DeprecatedVisionClient::class, 'vision', $config);
        }
        throw new \BadMethodCallException(sprintf(
            'This method is no longer supported, create %s directly instead.',
            ImageAnnotatorClient::class
        ));
    }

/**
     * @deprecated
     * @see TranslationServiceClient
     * @throws \BadMethodCallException
     */
    public function translate(array $config = [])
    {
        if (class_exists(DeprecatedTranslateClient::class)) {
            return $this->createClient(DeprecatedTranslateClient::class, 'translate', $config);
        }
        throw new \BadMethodCallException(sprintf(
            'This method is no longer supported, create %s directly instead.',
            TranslationServiceClient::class
        ));
    }

/**
     * Create the client library, or error if not installed.
     *
     * @param string $class The class to create.
     * @param string $packageName The name of the package
     * @param array $config Configuration options.
     */
    private function createClient($class, $packageName, array $config = [])
    {
        if (class_exists($class)) {
            return new $class($this->resolveConfig($config + $this->config));
        }
        throw new \Exception(sprintf(
            'The google/cloud-%s package is missing and must be installed.',
            $packageName
        ));
    }

/**
     * Resolves configuration options.
     *
     * @param array $config
     * @return array
     */
    private function resolveConfig(array $config)
    {
        if (!isset($config['httpHandler'])) {
            $config['httpHandler'] = HttpHandlerFactory::build();
        }

if (!isset($config['asyncHttpHandler'])) {
            $config['asyncHttpHandler'] = $config['httpHandler'] instanceof Guzzle6HttpHandler
                ? [$config['httpHandler'], 'async']
                : [HttpHandlerFactory::build(), 'async'];
        }

return array_merge($this->config, $config);
    }
}

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