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<?php
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namespace Aws\Api\Serializer;
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use Aws\Api\Service;
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use Aws\Api\StructureShape;
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/**
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 * Serializes requests for the REST-JSON protocol.
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 * @internal
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 */
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class RestJsonSerializer extends RestSerializer
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{
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    /** @var JsonBody */
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    private $jsonFormatter;
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    /** @var string */
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    private $contentType;
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    /**
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     * @param Service  $api           Service API description
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     * @param string   $endpoint      Endpoint to connect to
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     * @param JsonBody $jsonFormatter Optional JSON formatter to use
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     */
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    public function __construct(
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        Service $api,
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        $endpoint,
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        JsonBody $jsonFormatter = null
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    ) {
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        parent::__construct($api, $endpoint);
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        $this->contentType = JsonBody::getContentType($api);
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        $this->jsonFormatter = $jsonFormatter ?: new JsonBody($api);
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    }
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    protected function payload(StructureShape $member, array $value, array &$opts)
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    {
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        $body = isset($value) ?
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            ((string) $this->jsonFormatter->build($member, $value))
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            : "{}";
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        $opts['headers']['Content-Type'] = $this->contentType;
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        $opts['body'] = $body;
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    }
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}