JsonRpcResponseCollection::sync() - Code Metrics - Inspection of "cleanup (#19)" - scaytrase/json-rpc-client - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( b091a1...a43e6f )

by Pavel

created 2017-06-21 10:34 UTC

JsonRpcResponseCollection::sync() C

↳ Parent: JsonRpcResponseCollection

Complexity

Conditions	10
Paths	17

Size

Total Lines	52
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	22
CRAP Score	12.4464

Importance

Changes

Metric	Value
dl	0
loc	52
ccs	22
cts	31
cp	0.7097
rs	6.2553
c	0
b	0
f	0
cc	10
eloc	28
nc	17
nop	0
crap	12.4464

How to fix Long Method Complexity

<?php

namespace ScayTrase\Api\JsonRpc;

use GuzzleHttp\Exception\GuzzleException;
use GuzzleHttp\Promise\PromiseInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use ScayTrase\Api\JsonRpc\Exception\JsonRpcProtocolException;
use ScayTrase\Api\JsonRpc\Exception\ResponseParseException;
use ScayTrase\Api\Rpc\Exception\RemoteCallFailedException;
use ScayTrase\Api\Rpc\ResponseCollectionInterface;
use ScayTrase\Api\Rpc\RpcRequestInterface;

/**
 * Class JsonRpcResponseCollection
 *
 * Json Rpc Collection contains responses only for non-notification responses
 * getResponse method will provide response stub for notification if request was successful
 */
final class JsonRpcResponseCollection implements \IteratorAggregate, ResponseCollectionInterface
{
    /** @var JsonRpcResponseInterface[] */
    private $hashedResponses = [];
    /** @var  RequestTransformation[] */
    private $transformations;
    /** @var  PromiseInterface */
    private $promise;
    /** @var  JsonRpcResponseInterface[] */
    private $responses = [];

    /** @var bool */
    private $synchronized = false;
    /**
     * @var LoggerInterface
     */
    private $logger;

    /**
     * JsonRpcResponseCollection constructor.
     * @param PromiseInterface $promise
     * @param RequestTransformation[] $transformations
     * @param LoggerInterface|null $logger
     */
    public function __construct(PromiseInterface $promise, array $transformations, LoggerInterface $logger = null)
    {
        $this->promise = $promise;
        $this->transformations = $transformations;
        $this->logger = $logger ?: new NullLogger();
    }

    /** {@inheritdoc} */
    public function getIterator()
    {
        $this->sync();

        return new \ArrayIterator($this->responses);
    }

    /** {@inheritdoc} */
    public function getResponse(RpcRequestInterface $request)
    {
        if (array_key_exists(spl_object_hash($request), $this->hashedResponses)) {
            return $this->hashedResponses[spl_object_hash($request)];
        }

        $this->sync();

        $storedRequest = null;
        foreach ($this->transformations as $transformation) {
            if ($transformation->getOriginalCall() === $request) {
                $storedRequest = $transformation->getTransformedCall();
                break;
            }
        }

        if (null === $storedRequest) {
            throw new \OutOfBoundsException('Given request was not invoked for this collection');
        }

        if ($storedRequest->isNotification()) {
            $this->hashedResponses[spl_object_hash($request)] = new JsonRpcNotificationResponse();

            return $this->hashedResponses[spl_object_hash($request)];
        }

        if (!array_key_exists($storedRequest->getId(), $this->responses)) {
            throw JsonRpcProtocolException::requestSendButNotResponded($storedRequest);
        }

        $this->hashedResponses[spl_object_hash($request)] = $this->responses[$storedRequest->getId()];

        return $this->hashedResponses[spl_object_hash($request)];
    }

    private function sync()
    {
        if ($this->synchronized) {
            return;
        }

        try {
            /** @var ResponseInterface $clientResponse */
            $clientResponse = $this->promise->wait();
            if (200 !== $clientResponse->getStatusCode()) {
                throw new RemoteCallFailedException('Response was not successful');
            }
        } catch (GuzzleException $exception) {
            throw new RemoteCallFailedException($exception->getMessage(), 0, $exception);
        }

        $data = (string)$clientResponse->getBody();

        // Null (empty response) is expected if only notifications were sent
        $rawResponses = [];

        if ('' !== $data) {
            $rawResponses = json_decode($data, false);
            if (json_last_error() !== JSON_ERROR_NONE) {
                throw ResponseParseException::notAJsonResponse();
            }
        }

        if (!is_array($rawResponses) && $rawResponses instanceof \stdClass) {
            $rawResponses = [$rawResponses];
        }

        $this->responses = [];
        foreach ($rawResponses as $rawResponse) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            try {
                $response = new SyncResponse($rawResponse);
            } catch (ResponseParseException $exception) {
                $this->logger->warning(
                    'Invalid JSON-RPC response skipped: '.$exception->getMessage(),
                    [
                        'data' => json_decode(json_encode($rawResponse), true),
                    ]
                );

                continue;
            }

            $this->responses[$response->getId()] = $response;
        }

        $this->synchronized = true;
    }
}


1		<?php
2
3		namespace ScayTrase\Api\JsonRpc;
4
5		use GuzzleHttp\Exception\GuzzleException;
6		use GuzzleHttp\Promise\PromiseInterface;
7		use Psr\Http\Message\ResponseInterface;
8		use Psr\Log\LoggerInterface;
9		use Psr\Log\NullLogger;
10		use ScayTrase\Api\JsonRpc\Exception\JsonRpcProtocolException;
11		use ScayTrase\Api\JsonRpc\Exception\ResponseParseException;
12		use ScayTrase\Api\Rpc\Exception\RemoteCallFailedException;
13		use ScayTrase\Api\Rpc\ResponseCollectionInterface;
14		use ScayTrase\Api\Rpc\RpcRequestInterface;
15
16		/**
17		* Class JsonRpcResponseCollection
18		*
19		* Json Rpc Collection contains responses only for non-notification responses
20		* getResponse method will provide response stub for notification if request was successful
21		*/
22		final class JsonRpcResponseCollection implements \IteratorAggregate, ResponseCollectionInterface
23		{
24		/** @var JsonRpcResponseInterface[] */
25		private $hashedResponses = [];
26		/** @var RequestTransformation[] */
27		private $transformations;
28		/** @var PromiseInterface */
29		private $promise;
30		/** @var JsonRpcResponseInterface[] */
31		private $responses = [];
32
33		/** @var bool */
34		private $synchronized = false;
35		/**
36		* @var LoggerInterface
37		*/
38		private $logger;
39
40		/**
41		* JsonRpcResponseCollection constructor.
42		* @param PromiseInterface $promise
43		* @param RequestTransformation[] $transformations
44		* @param LoggerInterface\|null $logger
45		*/
46	17	public function __construct(PromiseInterface $promise, array $transformations, LoggerInterface $logger = null)
47		{
48	17	$this->promise = $promise;
49	17	$this->transformations = $transformations;
50	17	$this->logger = $logger ?: new NullLogger();
51	17	}
52
53		/** {@inheritdoc} */
54		public function getIterator()
55		{
56		$this->sync();
57
58		return new \ArrayIterator($this->responses);
59		}
60
61		/** {@inheritdoc} */
62	7	public function getResponse(RpcRequestInterface $request)
63		{
64	7	if (array_key_exists(spl_object_hash($request), $this->hashedResponses)) {
65		return $this->hashedResponses[spl_object_hash($request)];
66		}
67
68	7	$this->sync();
69
70	5	$storedRequest = null;
71	5	foreach ($this->transformations as $transformation) {
72	5	if ($transformation->getOriginalCall() === $request) {
73	5	$storedRequest = $transformation->getTransformedCall();
74	5	break;
75		}
76	5	}
77
78	5	if (null === $storedRequest) {
79		throw new \OutOfBoundsException('Given request was not invoked for this collection');
80		}
81
82	5	if ($storedRequest->isNotification()) {
83	2	$this->hashedResponses[spl_object_hash($request)] = new JsonRpcNotificationResponse();
84
85	2	return $this->hashedResponses[spl_object_hash($request)];
86		}
87
88	4	if (!array_key_exists($storedRequest->getId(), $this->responses)) {
89		throw JsonRpcProtocolException::requestSendButNotResponded($storedRequest);
90		}
91
92	4	$this->hashedResponses[spl_object_hash($request)] = $this->responses[$storedRequest->getId()];
93
94	4	return $this->hashedResponses[spl_object_hash($request)];
95		}
96
97	7	private function sync()
98		{
99	7	if ($this->synchronized) {
100	1	return;
101		}
102
103		try {
104		/** @var ResponseInterface $clientResponse */
105	7	$clientResponse = $this->promise->wait();
106	5	if (200 !== $clientResponse->getStatusCode()) {
107		throw new RemoteCallFailedException('Response was not successful');
108		}
109	7	} catch (GuzzleException $exception) {
110	2	throw new RemoteCallFailedException($exception->getMessage(), 0, $exception);
111		}
112
113	5	$data = (string)$clientResponse->getBody();
114
115		// Null (empty response) is expected if only notifications were sent
116	5	$rawResponses = [];
117
118	5	if ('' !== $data) {
119	4	$rawResponses = json_decode($data, false);
120	4	if (json_last_error() !== JSON_ERROR_NONE) {
121		throw ResponseParseException::notAJsonResponse();
122		}
123	4	}
124
125	5	if (!is_array($rawResponses) && $rawResponses instanceof \stdClass) {
126		$rawResponses = [$rawResponses];
127		}
128
129	5	$this->responses = [];
130	5	foreach ($rawResponses as $rawResponse) {
		0 ignored issues – show Bug introduced 2016-05-13 05:52 UTC by Report Bug Copy Issue Report The expression `$rawResponses` of type `object\|integer\|double\|string\|null\|boolean\|array` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
131		try {
132	4	$response = new SyncResponse($rawResponse);
133	4	} catch (ResponseParseException $exception) {
134		$this->logger->warning(
135		'Invalid JSON-RPC response skipped: '.$exception->getMessage(),
136		[
137		'data' => json_decode(json_encode($rawResponse), true),
138		]
139		);
140
141		continue;
142		}
143
144	4	$this->responses[$response->getId()] = $response;
145	5	}
146
147	5	$this->synchronized = true;
148	5	}
149		}
150

scaytrase / json-rpc-client

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JsonRpcResponseCollection::sync() C

Complexity

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Duplication

Code Coverage

Importance

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