DockerHandler::createStream() - Code Metrics - Inspection of "[WIP] Guzzle 5.x support" - stage1/docker-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#138)

unknown

created 2015-12-18 14:01 UTC

DockerHandler::createStream() C

↳ Parent: DockerHandler

Complexity

Conditions	11
Paths	32

Size

Total Lines	42
Code Lines	22

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	42
rs	5.2653
cc	11
eloc	22
nc	32
nop	2

How to fix Complexity

<?php

namespace Docker\Http\Handler;

use Docker\Http\Stream\Filter\OutputEvent;
use GuzzleHttp\Event\EmitterInterface;
use GuzzleHttp\Ring\Core;
use GuzzleHttp\Ring\Exception\ConnectException;
use GuzzleHttp\Ring\Exception\RingException;
use GuzzleHttp\Ring\Future\CompletedFutureArray;
use GuzzleHttp\Stream\Stream;

class DockerHandler
{
    const CHUNK_SIZE = 8192;

    /** @var string */
    private $entrypoint;

    /** @var resource A stream context resource */
    private $context;

    /** @var boolean Whether stream is encrypted with TLS */
    private $useTls;

    /** @var EmitterInterface */
    protected $emitter;

    /**
     * @param array $options
     */
    public function __construct(array $options = [])
    {
        if (isset($options['entrypoint'])) {
            $this->entrypoint = $options['entrypoint'];
        }
        if (isset($options['useTls'])) {
            $this->useTls = $options['useTls'];
        }
        if (isset($options['emitter'])) {
            $this->emitter = $options['emitter'];
        }
        $this->context = isset($options['context'])
            ? $options['context'] : stream_context_create();

        stream_filter_register('chunk', '\Docker\Http\Stream\Filter\Chunk');
        stream_filter_register('event', '\Docker\Http\Stream\Filter\Event');
    }

    /**
     * @param array $request
     * @return CompletedFutureArray
     */
    public function __invoke(array $request)
    {
        $url = Core::url($request);
        Core::doSleep($request);

        try {
            // Does not support the expect header.
            $request = Core::removeHeader($request, 'Expect');
            $stream = $this->createStream($url, $request);

            return $this->createResponse($request, $stream);
        } catch (RingException $e) {
            return $this->createErrorResponse($url, $e);
        }
    }

    /**
     * @param array $request
     * @param $value
     */
    public function addCallback(array &$request, $value)
    {
        $this->emitter->on('response.output', function (OutputEvent $event) use ($value, $request) {
            $value($event->getContent(), $event->getType());
        });
    }

    /**
     * @param array $request
     * @param $value
     */
    private function addTimeout(array &$request, $value)
    {
        $request['client']['timeout'] = $value;
    }

    /**
     * @param string $url
     * @param array $request
     * @return resource
     */
    private function createStream($url, array &$request)
    {
        static $methods;
        if (!$methods) {
            $methods = array_flip(get_class_methods(__CLASS__));
        }

        // HTTP/1.1 streams using the PHP stream wrapper require a
        // Connection: close header
        if ((!isset($request['version']) || $request['version'] == '1.1')
            && !Core::hasHeader($request, 'Connection')
        ) {
            $request['headers']['Connection'] = ['close'];
        }

        if (isset($request['client']['stream']) && $request['client']['stream']) {
            $request = Core::setHeader($request, 'Transfer-Encoding', ['chunked']);
        }

        // Ensure SSL is verified by default
        if (!isset($request['client']['verify'])) {
            $request['client']['verify'] = true;
        }

        $options = [];

        if (isset($request['client'])) {
            foreach ($request['client'] as $key => $value) {
                $method = "add" . ucfirst($key);
                if (isset($methods[$method])) {
                    $this->{$method}($request, $value);
                }
            }
        }

        return $this->createStreamResource(
            $url,
            $request,
            $options,
            $this->context
        );
    }

    /**
     * @param $url
     * @param array $request
     * @param array $options
     * @param resource $context
     * @return resource
     */
    private function createStreamResource(
        $url,
        array $request,
        array $options,
        $context
    ) {

        /** @noinspection PhpMethodParametersCountMismatchInspection */
        return $this->createResource(
            function () use ($url, $context, $request, $options) {

                $errorNo = null;
                $errorMsg = null;

                $resource = @stream_socket_client(
                    $this->entrypoint,
                    $errorNo,
                    $errorMsg,
                    $this->getDefaultTimeout($request),
                    STREAM_CLIENT_CONNECT,
                    $context
                );

                return $resource;
            }
        );
    }

    /**
     * Create a resource and check to ensure it was created successfully
     *
     * @param callable $callback Callable that returns stream resource
     *
     * @return resource
     * @throws \RuntimeException on error
     */
    private function createResource(callable $callback)
    {
        $errors = null;
        set_error_handler(function ($_, $msg, $file, $line) use (&$errors) {
            $errors[] = [
                'message' => $msg,
                'file' => $file,
                'line' => $line
            ];

            return true;
        });

        $resource = $callback();
        restore_error_handler();

        if (!$resource) {
            $message = 'Error creating resource: ';
            if (!empty($errors)) {
                foreach ($errors as $err) {
                    foreach ($err as $key => $value) {
                        $message .= "[$key] $value" . PHP_EOL;
                    }
                }
            }
            throw new RingException(trim($message));
        }

        return $resource;
    }

    /**
     * Creates an error response for the given stream.
     *
     * @param string $url
     * @param RingException $e
     * @return CompletedFutureArray
     */
    private function createErrorResponse($url, RingException $e)
    {
        // Determine if the error was a networking error.
        $message = $e->getMessage();

        // This list can probably get more comprehensive.
        if (strpos($message, 'getaddrinfo') // DNS lookup failed
            || strpos($message, 'Connection refused')
        ) {
            $e = new ConnectException($e->getMessage(), 0, $e);
        }

        return new CompletedFutureArray([
            'status' => null,
            'body' => null,
            'headers' => [],
            'effective_url' => $url,
            'error' => $e
        ]);
    }

    /**
     * @param array $request
     * @param resource $socket
     * @return CompletedFutureArray
     */
    private function createResponse(array $request, $socket)
    {
        // Check if tls is needed
        if ($this->useTls) {
            if (!@stream_socket_enable_crypto($socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
                throw new RingException(sprintf('Cannot enable tls: %s', error_get_last()['message']));
            }
        }

        // Write headers
        $isWrite = $this->fwrite($socket, $this->getRequestHeaderAsString($request));

        // Write body if set
        if ($request['body'] !== null && $isWrite !== false) {
            $stream = Stream::factory($request['body']);
            $filter = null;

            if (Core::header($request, 'Transfer-Encoding') == 'chunked') {
                $filter = stream_filter_prepend($socket, 'chunk', STREAM_FILTER_WRITE);
            }

            while (!$stream->eof() && $isWrite) {
                $isWrite = $this->fwrite($socket, $stream->read(self::CHUNK_SIZE));
            }

            if (Core::header($request, 'Transfer-Encoding') == 'chunked') {
                stream_filter_remove($filter);

                if (false !== $isWrite) {
                    $isWrite = $this->fwrite($socket, "0\r\n\r\n");
                }
            }
        }

        stream_set_timeout($socket, $this->getDefaultTimeout($request));

        // Response should be available, extract headers
        do {
            $response = $this->getResponseWithHeaders($socket, $request);
        } while ($response !== null && $response['status'] == 100);

        // Check timeout
        $metadata = stream_get_meta_data($socket);

        if ($metadata['timed_out']) {
            throw new RingException('Timed out while reading socket');
        }

        if (false === $isWrite) {
            // When an error happen and no response it is most probably due to TLS configuration
            if ($response === null) {
                throw new RingException(
                    'Error while sending request (Broken Pipe' .
                    '), check your TLS configuration and logs in docker daemon for more information ',
                    $request
                );
            }

            throw new RingException('Error while sending request (Broken Pipe)', $request, $response);
        }

        if (null == $response) {
            throw new RingException('No response could be parsed: check server log', $request);
        }

        $this->setResponseStream($response, $socket);

        if (isset($request['client']['wait']) && $request['client']['wait']) {
            Core::body($response);
        }

        return new CompletedFutureArray($response);
    }

    /**
     * @param array $response
     * @param $socket
     */
    private function setResponseStream(array &$response, $socket)
    {
        if (Core::header($response, 'Transfer-Encoding') == "chunked") {
            stream_filter_append($socket, 'dechunk');
        }

        if (isset($response['client']['callback']) && $response['client']['callback']) {
            stream_filter_append($socket, 'event', STREAM_FILTER_READ, [
                'emitter' => $this->emitter,
                'content_type' => Core::header($response, 'Content-Type')
            ]);
        }

        $stream = new Stream($socket);

        if ($response['status'] / 100 > 4) {
            $response['reason'] = (string) $stream;
        }

        $response['body'] = $stream;
    }

    /**
     * Replace fwrite behavior as api is broken in PHP
     *
     * @see https://secure.phabricator.com/rPHU69490c53c9c2ef2002bc2dd4cecfe9a4b080b497
     *
     * @param resource $stream The stream resource
     * @param string|bool $bytes Bytes written in the stream
     *
     * @return bool|int false if pipe is broken, number of bytes written otherwise
     */
    private function fwrite($stream, $bytes)
    {
        if (!strlen($bytes)) {
            return 0;
        }

        $result = @fwrite($stream, $bytes);
        if ($result !== 0) {
            // In cases where some bytes are witten (`$result > 0`) or
            // an error occurs (`$result === false`), the behavior of fwrite() is
            // correct. We can return the value as-is.
            return $result;
        }

        // If we make it here, we performed a 0-length write. Try to distinguish
        // between EAGAIN and EPIPE. To do this, we're going to `stream_select()`
        // the stream, write to it again if PHP claims that it's writable, and
        // consider the pipe broken if the write fails.

        $read = [];
        $write = [$stream];
        $except = [];

        @stream_select($read, $write, $except, 0);
// For example instead of
@mkdir($dir);

// Better use
if (@mkdir($dir) === false) {
    throw new \RuntimeException('The directory '.$dir.' could not be created.');
}

        if (!$write) {

            // The stream isn't writable, so we conclude that it probably really is
            // blocked and the underlying error was EAGAIN. Return 0 to indicate that
            // no data could be written yet.
            return 0;
        }

        // If we make it here, PHP **just** claimed that this stream is writable, so
        // perform a write. If the write also fails, conclude that these failures are
        // EPIPE or some other permanent failure.
        $result = @fwrite($stream, $bytes);
        if ($result !== 0) {
            // The write worked or failed explicitly. This value is fine to return.
            return $result;
        }

        // We performed a 0-length write, were told that the stream was writable, and
        // then immediately performed another 0-length write. Conclude that the pipe
        // is broken and return `false`.
        return false;
    }

    /**
     * @param array $request
     * @return string
     */
    private function getRequestHeaderAsString(array $request)
    {
        $message = vsprintf('%s %s HTTP/%s', [
                strtoupper($request['http_method']),
                $request['url'],
                $request['version']
            ]) . "\r\n";

        foreach ($request['headers'] as $name => $values) {
            $message .= $name . ': ' . implode(', ', $values) . "\r\n";
        }

        $message .= "\r\n";

        return $message;
    }

    /**
     * @param array $request
     * @return null|string
     */
    private function getDefaultTimeout(array $request)
    {
        $timeout = null;

        if (isset($request['timeout'])) {
            $timeout = $request['timeout'];
        }

        if ($timeout === null) {
            if (isset($request['client']['timeout'])) {
                $timeout = $request['client']['timeout'];
            }
        }

        if (null == $timeout) {
            $timeout = ini_get('default_socket_timeout');
        }

        return $timeout;
    }

    private function getResponseWithHeaders($stream, array $request)
    {
        $headers = [];

        while (($line = fgets($stream)) !== false) {
            if (rtrim($line) === '') {
                break;
            }

            $headers[] = trim($line);
        }

        $parts = explode(' ', array_shift($headers), 3);

        if (count($parts) <= 1) {
            return null;
        }

        $options = ['protocol_version' => substr($parts[0], -3)];
        if (isset($parts[2])) {
            $options['reason_phrase'] = $parts[2];
        }

        // Set the size on the stream if it was returned in the response
        $responseHeaders = [];
        foreach ($headers as $header) {
            $headerParts = explode(':', $header, 2);
            $responseHeaders[trim($headerParts[0])] = isset($headerParts[1])
                ? trim($headerParts[1])
                : '';
        }

        $response = [
            'version' => substr($parts[0], 5),
            'status' => $parts[1],
            'reason' => isset($parts[2]) ? $parts[2] : null,
            'headers' => Core::headersFromLines($headers),
            'client' => $request['client']
        ];

        return $response;
    }
}


1			<?php
2
3			namespace Docker\Http\Handler;
4
5			use Docker\Http\Stream\Filter\OutputEvent;
6			use GuzzleHttp\Event\EmitterInterface;
7			use GuzzleHttp\Ring\Core;
8			use GuzzleHttp\Ring\Exception\ConnectException;
9			use GuzzleHttp\Ring\Exception\RingException;
10			use GuzzleHttp\Ring\Future\CompletedFutureArray;
11			use GuzzleHttp\Stream\Stream;
12
13			class DockerHandler
14			{
15			const CHUNK_SIZE = 8192;
16
17			/** @var string */
18			private $entrypoint;
19
20			/** @var resource A stream context resource */
21			private $context;
22
23			/** @var boolean Whether stream is encrypted with TLS */
24			private $useTls;
25
26			/** @var EmitterInterface */
27			protected $emitter;
28
29			/**
30			* @param array $options
31			*/
32			public function __construct(array $options = [])
33			{
34			if (isset($options['entrypoint'])) {
35			$this->entrypoint = $options['entrypoint'];
36			}
37			if (isset($options['useTls'])) {
38			$this->useTls = $options['useTls'];
39			}
40			if (isset($options['emitter'])) {
41			$this->emitter = $options['emitter'];
42			}
43			$this->context = isset($options['context'])
44			? $options['context'] : stream_context_create();
45
46			stream_filter_register('chunk', '\Docker\Http\Stream\Filter\Chunk');
47			stream_filter_register('event', '\Docker\Http\Stream\Filter\Event');
48			}
49
50			/**
51			* @param array $request
52			* @return CompletedFutureArray
53			*/
54			public function __invoke(array $request)
55			{
56			$url = Core::url($request);
57			Core::doSleep($request);
58
59			try {
60			// Does not support the expect header.
61			$request = Core::removeHeader($request, 'Expect');
62			$stream = $this->createStream($url, $request);
63
64			return $this->createResponse($request, $stream);
65			} catch (RingException $e) {
66			return $this->createErrorResponse($url, $e);
67			}
68			}
69
70			/**
71			* @param array $request
72			* @param $value
73			*/
74			public function addCallback(array &$request, $value)
75			{
76			$this->emitter->on('response.output', function (OutputEvent $event) use ($value, $request) {
77			$value($event->getContent(), $event->getType());
78			});
79			}
80
81			/**
82			* @param array $request
83			* @param $value
84			*/
85			private function addTimeout(array &$request, $value)
86			{
87			$request['client']['timeout'] = $value;
88			}
89
90			/**
91			* @param string $url
92			* @param array $request
93			* @return resource
94			*/
95			private function createStream($url, array &$request)
96			{
97			static $methods;
98			if (!$methods) {
99			$methods = array_flip(get_class_methods(__CLASS__));
100			}
101
102			// HTTP/1.1 streams using the PHP stream wrapper require a
103			// Connection: close header
104			if ((!isset($request['version']) \|\| $request['version'] == '1.1')
105			&& !Core::hasHeader($request, 'Connection')
106			) {
107			$request['headers']['Connection'] = ['close'];
108			}
109
110			if (isset($request['client']['stream']) && $request['client']['stream']) {
111			$request = Core::setHeader($request, 'Transfer-Encoding', ['chunked']);
112			}
113
114			// Ensure SSL is verified by default
115			if (!isset($request['client']['verify'])) {
116			$request['client']['verify'] = true;
117			}
118
119			$options = [];
120
121			if (isset($request['client'])) {
122			foreach ($request['client'] as $key => $value) {
123			$method = "add" . ucfirst($key);
124			if (isset($methods[$method])) {
125			$this->{$method}($request, $value);
126			}
127			}
128			}
129
130			return $this->createStreamResource(
131			$url,
132			$request,
133			$options,
134			$this->context
135			);
136			}
137
138			/**
139			* @param $url
140			* @param array $request
141			* @param array $options
142			* @param resource $context
143			* @return resource
144			*/
145			private function createStreamResource(
146			$url,
147			array $request,
148			array $options,
149			$context
150			) {
151
152			/** @noinspection PhpMethodParametersCountMismatchInspection */
153			return $this->createResource(
154			function () use ($url, $context, $request, $options) {
155
156			$errorNo = null;
157			$errorMsg = null;
158
159			$resource = @stream_socket_client(
160			$this->entrypoint,
161			$errorNo,
162			$errorMsg,
163			$this->getDefaultTimeout($request),
164			STREAM_CLIENT_CONNECT,
165			$context
166			);
167
168			return $resource;
169			}
170			);
171			}
172
173			/**
174			* Create a resource and check to ensure it was created successfully
175			*
176			* @param callable $callback Callable that returns stream resource
177			*
178			* @return resource
179			* @throws \RuntimeException on error
180			*/
181			private function createResource(callable $callback)
182			{
183			$errors = null;
184			set_error_handler(function ($_, $msg, $file, $line) use (&$errors) {
185			$errors[] = [
186			'message' => $msg,
187			'file' => $file,
188			'line' => $line
189			];
190
191			return true;
192			});
193
194			$resource = $callback();
195			restore_error_handler();
196
197			if (!$resource) {
198			$message = 'Error creating resource: ';
199			if (!empty($errors)) {
200			foreach ($errors as $err) {
201			foreach ($err as $key => $value) {
202			$message .= "[$key] $value" . PHP_EOL;
203			}
204			}
205			}
206			throw new RingException(trim($message));
207			}
208
209			return $resource;
210			}
211
212			/**
213			* Creates an error response for the given stream.
214			*
215			* @param string $url
216			* @param RingException $e
217			* @return CompletedFutureArray
218			*/
219			private function createErrorResponse($url, RingException $e)
220			{
221			// Determine if the error was a networking error.
222			$message = $e->getMessage();
223
224			// This list can probably get more comprehensive.
225			if (strpos($message, 'getaddrinfo') // DNS lookup failed
226			\|\| strpos($message, 'Connection refused')
227			) {
228			$e = new ConnectException($e->getMessage(), 0, $e);
229			}
230
231			return new CompletedFutureArray([
232			'status' => null,
233			'body' => null,
234			'headers' => [],
235			'effective_url' => $url,
236			'error' => $e
237			]);
238			}
239
240			/**
241			* @param array $request
242			* @param resource $socket
243			* @return CompletedFutureArray
244			*/
245			private function createResponse(array $request, $socket)
246			{
247			// Check if tls is needed
248			if ($this->useTls) {
249			if (!@stream_socket_enable_crypto($socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
250			throw new RingException(sprintf('Cannot enable tls: %s', error_get_last()['message']));
251			}
252			}
253
254			// Write headers
255			$isWrite = $this->fwrite($socket, $this->getRequestHeaderAsString($request));
256
257			// Write body if set
258			if ($request['body'] !== null && $isWrite !== false) {
259			$stream = Stream::factory($request['body']);
260			$filter = null;
261
262			if (Core::header($request, 'Transfer-Encoding') == 'chunked') {
263			$filter = stream_filter_prepend($socket, 'chunk', STREAM_FILTER_WRITE);
264			}
265
266			while (!$stream->eof() && $isWrite) {
267			$isWrite = $this->fwrite($socket, $stream->read(self::CHUNK_SIZE));
268			}
269
270			if (Core::header($request, 'Transfer-Encoding') == 'chunked') {
271			stream_filter_remove($filter);
272
273			if (false !== $isWrite) {
274			$isWrite = $this->fwrite($socket, "0\r\n\r\n");
275			}
276			}
277			}
278
279			stream_set_timeout($socket, $this->getDefaultTimeout($request));
280
281			// Response should be available, extract headers
282			do {
283			$response = $this->getResponseWithHeaders($socket, $request);
284			} while ($response !== null && $response['status'] == 100);
285
286			// Check timeout
287			$metadata = stream_get_meta_data($socket);
288
289			if ($metadata['timed_out']) {
290			throw new RingException('Timed out while reading socket');
291			}
292
293			if (false === $isWrite) {
294			// When an error happen and no response it is most probably due to TLS configuration
295			if ($response === null) {
296			throw new RingException(
297			'Error while sending request (Broken Pipe' .
298			'), check your TLS configuration and logs in docker daemon for more information ',
299			$request
300			);
301			}
302
303			throw new RingException('Error while sending request (Broken Pipe)', $request, $response);
304			}
305
306			if (null == $response) {
307			throw new RingException('No response could be parsed: check server log', $request);
308			}
309
310			$this->setResponseStream($response, $socket);
311
312			if (isset($request['client']['wait']) && $request['client']['wait']) {
313			Core::body($response);
314			}
315
316			return new CompletedFutureArray($response);
317			}
318
319			/**
320			* @param array $response
321			* @param $socket
322			*/
323			private function setResponseStream(array &$response, $socket)
324			{
325			if (Core::header($response, 'Transfer-Encoding') == "chunked") {
326			stream_filter_append($socket, 'dechunk');
327			}
328
329			if (isset($response['client']['callback']) && $response['client']['callback']) {
330			stream_filter_append($socket, 'event', STREAM_FILTER_READ, [
331			'emitter' => $this->emitter,
332			'content_type' => Core::header($response, 'Content-Type')
333			]);
334			}
335
336			$stream = new Stream($socket);
337
338			if ($response['status'] / 100 > 4) {
339			$response['reason'] = (string) $stream;
340			}
341
342			$response['body'] = $stream;
343			}
344
345			/**
346			* Replace fwrite behavior as api is broken in PHP
347			*
348			* @see https://secure.phabricator.com/rPHU69490c53c9c2ef2002bc2dd4cecfe9a4b080b497
349			*
350			* @param resource $stream The stream resource
351			* @param string\|bool $bytes Bytes written in the stream
352			*
353			* @return bool\|int false if pipe is broken, number of bytes written otherwise
354			*/
355			private function fwrite($stream, $bytes)
356			{
357			if (!strlen($bytes)) {
358			return 0;
359			}
360
361			$result = @fwrite($stream, $bytes);
362			if ($result !== 0) {
363			// In cases where some bytes are witten (`$result > 0`) or
364			// an error occurs (`$result === false`), the behavior of fwrite() is
365			// correct. We can return the value as-is.
366			return $result;
367			}
368
369			// If we make it here, we performed a 0-length write. Try to distinguish
370			// between EAGAIN and EPIPE. To do this, we're going to `stream_select()`
371			// the stream, write to it again if PHP claims that it's writable, and
372			// consider the pipe broken if the write fails.
373
374			$read = [];
375			$write = [$stream];
376			$except = [];
377
378			@stream_select($read, $write, $except, 0);
			0 ignored issues – show Security Best Practice introduced 2015-12-10 15:58 UTC by Report Bug Copy Issue Report It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended. If you suppress an error, we recommend checking for the error condition explicitly: // For example instead of @mkdir($dir); // Better use if (@mkdir($dir) === false) { throw new \RuntimeException('The directory '.$dir.' could not be created.'); } Loading history...
379
380			if (!$write) {
			0 ignored issues – show Bug Best Practice introduced 2015-12-10 15:58 UTC by Report Bug Copy Issue Report The expression `$write` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
381			// The stream isn't writable, so we conclude that it probably really is
382			// blocked and the underlying error was EAGAIN. Return 0 to indicate that
383			// no data could be written yet.
384			return 0;
385			}
386
387			// If we make it here, PHP just claimed that this stream is writable, so
388			// perform a write. If the write also fails, conclude that these failures are
389			// EPIPE or some other permanent failure.
390			$result = @fwrite($stream, $bytes);
391			if ($result !== 0) {
392			// The write worked or failed explicitly. This value is fine to return.
393			return $result;
394			}
395
396			// We performed a 0-length write, were told that the stream was writable, and
397			// then immediately performed another 0-length write. Conclude that the pipe
398			// is broken and return `false`.
399			return false;
400			}
401
402			/**
403			* @param array $request
404			* @return string
405			*/
406			private function getRequestHeaderAsString(array $request)
407			{
408			$message = vsprintf('%s %s HTTP/%s', [
409			strtoupper($request['http_method']),
410			$request['url'],
411			$request['version']
412			]) . "\r\n";
413
414			foreach ($request['headers'] as $name => $values) {
415			$message .= $name . ': ' . implode(', ', $values) . "\r\n";
416			}
417
418			$message .= "\r\n";
419
420			return $message;
421			}
422
423			/**
424			* @param array $request
425			* @return null\|string
426			*/
427			private function getDefaultTimeout(array $request)
428			{
429			$timeout = null;
430
431			if (isset($request['timeout'])) {
432			$timeout = $request['timeout'];
433			}
434
435			if ($timeout === null) {
436			if (isset($request['client']['timeout'])) {
437			$timeout = $request['client']['timeout'];
438			}
439			}
440
441			if (null == $timeout) {
442			$timeout = ini_get('default_socket_timeout');
443			}
444
445			return $timeout;
446			}
447
448			private function getResponseWithHeaders($stream, array $request)
449			{
450			$headers = [];
451
452			while (($line = fgets($stream)) !== false) {
453			if (rtrim($line) === '') {
454			break;
455			}
456
457			$headers[] = trim($line);
458			}
459
460			$parts = explode(' ', array_shift($headers), 3);
461
462			if (count($parts) <= 1) {
463			return null;
464			}
465
466			$options = ['protocol_version' => substr($parts[0], -3)];
467			if (isset($parts[2])) {
468			$options['reason_phrase'] = $parts[2];
469			}
470
471			// Set the size on the stream if it was returned in the response
472			$responseHeaders = [];
473			foreach ($headers as $header) {
474			$headerParts = explode(':', $header, 2);
475			$responseHeaders[trim($headerParts[0])] = isset($headerParts[1])
476			? trim($headerParts[1])
477			: '';
478			}
479
480			$response = [
481			'version' => substr($parts[0], 5),
482			'status' => $parts[1],
483			'reason' => isset($parts[2]) ? $parts[2] : null,
484			'headers' => Core::headersFromLines($headers),
485			'client' => $request['client']
486			];
487
488			return $response;
489			}
490			}
491

stage1 / docker-php

Pull Request — master (#138)

DockerHandler::createStream() C

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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