Completed
Push — master ( 12714a...a3d57f )
by Patrick
04:46
created

WebServer::relay()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 11
Code Lines 6

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 6
CRAP Score 1
Metric Value
dl 0
loc 11
ccs 6
cts 6
cp 1
rs 9.4285
cc 1
eloc 6
nc 1
nop 1
crap 1
1
<?php
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namespace Mosaic\Http;
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use InvalidArgumentException;
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use Mosaic\Http\Emitters\SapiEmitter;
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use Mosaic\Http\Server as ServerContract;
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use Psr\Http\Message\ResponseInterface;
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use Relay\RelayBuilder;
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class WebServer implements ServerContract
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{
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    /**
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     * @var array
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     */
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    protected $pipes = [];
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    /**
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     * @var Emitter
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     */
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    protected $emitter;
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    /**
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     * @var callable
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     */
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    protected $resolver;
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    /**
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     * @param Emitter $emitter
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     */
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    public function __construct(Emitter $emitter = null)
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    {
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        $this->emitter = $emitter ?: new SapiEmitter;
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        $this->setResolver(function ($class) {
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            return new $class;
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        });
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    }
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    /**
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     * @param Request       $request
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     * @param callable|null $terminate
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     */
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    public function serve(Request $request, callable $terminate = null)
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    {
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        if (count($this->pipes) < 1) {
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            throw new InvalidArgumentException('No pipes were given to the web server. Response could not be served.');
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        }
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        ob_start();
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        $bufferLevel = ob_get_level();
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        $response = $this->relay($request);
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        if (is_callable($terminate)) {
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            $terminate($request->toPsr7(), $response);
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        }
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        $this->getEmitter()->emit($response, $bufferLevel);
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    }
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    /**
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     * @param  Request           $request
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     * @return ResponseInterface
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     */
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    protected function relay(Request $request)
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    {
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        $relay = (new RelayBuilder($this->resolver))->newInstance($this->pipes);
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        $response = $relay(
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            $request->toPsr7(),
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            $request->prepareResponse()->toPsr7()
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        );
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        return $response;
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    }
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    /**
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     * @param array ...$pipes
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     * @return Server
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     */
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    public function pipe(...$pipes)
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    {
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        $this->pipes = $pipes;
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        return $this;
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    }
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    /**
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     * @return Emitter
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     */
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    protected function getEmitter() : Emitter
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    {
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        return $this->emitter;
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    }
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    /**
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     * @param  callable $resolver
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     * @return Server
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     */
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    public function setResolver(callable $resolver)
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    {
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        $this->resolver = $resolver;
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        return $this;
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    }
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}
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