PublicAPIClient::prepareRequest() - Code Metrics - Inspection of "custom URL support" - covery/php-client - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 4968a9...664a15 )

by Anton

created 2016-10-10 14:27 UTC

PublicAPIClient::prepareRequest() A

↳ Parent: PublicAPIClient

Complexity

Conditions	3
Paths	2

Size

Total Lines	14
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	14
rs	9.4285
c	0
b	0
f	0
cc	3
eloc	7
nc	2
nop	1

<?php

namespace Covery\Client;

use Covery\Client\Envelopes\ValidatorV1;
use Covery\Client\Requests\Decision;
use Covery\Client\Requests\Event;
use Covery\Client\Requests\Ping;
use GuzzleHttp\Psr7\Uri;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;

class PublicAPIClient
{
    /**
     * @var CredentialsInterface
     */
    private $credentials;

    /**
     * @var TransportInterface
     */
    private $transport;

    /**
     * @var LoggerInterface
     */
    private $logger;

    /**
     * @var ValidatorV1
     */
    private $validator;

    /**
     * @var string|null
     */
    private $url;

    /**
     * Client constructor.
     * @param CredentialsInterface $credentials
     * @param TransportInterface $transport
     * @param string|null $overrideURl
     * @param LoggerInterface|null $logger
     */
    public function __construct(
        CredentialsInterface $credentials,
        TransportInterface $transport,
        $overrideURl = null,
        LoggerInterface $logger = null
    ) {
        $this->credentials = $credentials;
        $this->transport = $transport;
        $this->logger = $logger === null ? new NullLogger() : $logger;
        $this->validator = new ValidatorV1();
        if ($overrideURl !== null) {
            if (substr($overrideURl, -1) != '/') {
                $overrideURl .= '/';
            }

            $this->url = $overrideURl;
        }
    }

    private function send(RequestInterface $request)
    {
        $request = $this->prepareRequest($request);
        try {
            $this->logger->info('Sending request to ' . $request->getUri());
            $before = microtime(true);
            $response = $this->transport->send($request);
            $this->logger->info(sprintf('Request done in %.2f', microtime(true) - $before));
        } catch (\Exception $inner) {
            $this->logger->error($inner->getMessage(), ['exception' => $inner]);
            // Wrapping exception
            throw new IoException('Error sending request', 0, $inner);
        }
        $code = $response->getStatusCode();
        $this->logger->debug('Received status code ' . $code);

        if ($code >= 400) {
            $this->handleNot200($response);
        }

        return $response->getBody()->getContents();
    }

    /**
     * Utility method, that prepares and signs request
     *
     * @param RequestInterface $request
     * @return RequestInterface
     */
    private function prepareRequest(RequestInterface $request)
    {
        $requestUrl = strval($request->getUri());
        if ($this->url !== null
            && substr($requestUrl, 0, strlen(TransportInterface::DEFAULT_URL)) === TransportInterface::DEFAULT_URL
        ) {
            // Replacing
            $request = $request->withUri(
                new Uri(str_replace(TransportInterface::DEFAULT_URL, $this->url, $requestUrl))
            );
        }

        return $this->credentials->signRequest($request);
    }

    /**
     * Utility function, that handles error response from Covery
     *
     * @param ResponseInterface $response
     * @throws Exception
     */
    private function handleNot200(ResponseInterface $response)
    {
        // Analyzing response
        if ($response->hasHeader('X-Maxwell-Status') && $response->hasHeader('X-Maxwell-Error-Message')) {
            // Extended data available
            $message = $response->getHeaderLine('X-Maxwell-Error-Message');
            $type = $response->getHeaderLine('X-Maxwell-Error-Type');
            if (strpos($type, 'AuthorizationRequiredException') !== false) {
                $this->logger->error('Authentication failure ' . $message);
                throw new AuthException($message, $response->getStatusCode());
            }

            switch ($message) {
                case 'Empty auth token':
                case 'Empty signature':
                case 'Empty nonce':
                    $this->logger->error('Authentication failure ' . $message);
                    throw new AuthException($message, $response->getStatusCode());
            }

            $this->logger->error('Covery error ' . $message);
            throw new DeliveredException($message, $response->getStatusCode());
        }


        throw new Exception("Communication failed with status code {$response->getStatusCode()}");
    }

    /**
     * Utility method, that reads JSON data
     *
     * @param $string
     * @return mixed|null
     * @throws Exception
     */
    private function readJson($string)
    {
        if (!is_string($string)) {
            throw new Exception("Unable to read JSON - not a string received");
        }
        if (strlen($string) === 0) {
            return null;
        }

        $data = json_decode($string, true);
        if ($data === null) {
            $message = 'Unable to decode JSON';
            if (function_exists('json_last_error_msg')) {
                $message = json_last_error_msg();
            }

            throw new Exception($message);
        }

        return $data;
    }

    /**
     * Sends request to Covery and returns access level, associated with
     * used credentials
     *
     * This method can be used for Covery health check and availability
     * On any problem (network, credentials, server side) this method
     * will throw an exception
     *
     * @return string
     * @throws Exception
     */
    public function ping()
    {
        $data = $this->readJson($this->send(new Ping()));
        if (!is_array($data) || !isset($data['level'])) {
            throw new Exception("Malformed response");
        }

        return $data['level'];
    }

    /**
     * Sends envelope to Covery and returns it's ID on Covery side
     * Before sending, validation is performed
     *
     * @param EnvelopeInterface $envelope
     * @return int
     * @throws Exception
     */
    public function sendEvent(EnvelopeInterface $envelope)
    {
        // Validating
        $this->validator->validate($envelope);

        // Sending
        $data = $this->readJson($this->send(new Event($envelope)));

        if (!is_array($data) || !isset($data['requestId']) || !is_int($data['requestId'])) {
            throw new Exception("Malformed response");
        }

        return $data['requestId'];
    }

    /**
     * Sends envelope to Covery for analysis
     *
     * @param EnvelopeInterface $envelope
     * @return Result
     * @throws Exception
     */
    public function makeDecision(EnvelopeInterface $envelope)
    {
        // Validating
        $this->validator->validate($envelope);

        // Sending
        $data = $this->readJson($this->send(new Decision($envelope)));

        if (!is_array($data)) {
            throw new Exception("Malformed response");
        }

        try {
            return new Result(
                $data['requestId'],
                $data['score'],
                $data['accept'],
                $data['reject'],
                $data['manual']
            );
        } catch (\Exception $error) {
            throw new Exception('Malformed response', 0, $error);
        }
    }
}


1			<?php
2
3			namespace Covery\Client;
4
5			use Covery\Client\Envelopes\ValidatorV1;
6			use Covery\Client\Requests\Decision;
7			use Covery\Client\Requests\Event;
8			use Covery\Client\Requests\Ping;
9			use GuzzleHttp\Psr7\Uri;
10			use Psr\Http\Message\RequestInterface;
11			use Psr\Http\Message\ResponseInterface;
12			use Psr\Log\LoggerInterface;
13			use Psr\Log\NullLogger;
14
15			class PublicAPIClient
16			{
17			/**
18			* @var CredentialsInterface
19			*/
20			private $credentials;
21
22			/**
23			* @var TransportInterface
24			*/
25			private $transport;
26
27			/**
28			* @var LoggerInterface
29			*/
30			private $logger;
31
32			/**
33			* @var ValidatorV1
34			*/
35			private $validator;
36
37			/**
38			* @var string\|null
39			*/
40			private $url;
41
42			/**
43			* Client constructor.
44			* @param CredentialsInterface $credentials
45			* @param TransportInterface $transport
46			* @param string\|null $overrideURl
47			* @param LoggerInterface\|null $logger
48			*/
49			public function __construct(
50			CredentialsInterface $credentials,
51			TransportInterface $transport,
52			$overrideURl = null,
53			LoggerInterface $logger = null
54			) {
55			$this->credentials = $credentials;
56			$this->transport = $transport;
57			$this->logger = $logger === null ? new NullLogger() : $logger;
58			$this->validator = new ValidatorV1();
59			if ($overrideURl !== null) {
60			if (substr($overrideURl, -1) != '/') {
61			$overrideURl .= '/';
62			}
63
64			$this->url = $overrideURl;
65			}
66			}
67
68			private function send(RequestInterface $request)
69			{
70			$request = $this->prepareRequest($request);
71			try {
72			$this->logger->info('Sending request to ' . $request->getUri());
73			$before = microtime(true);
74			$response = $this->transport->send($request);
75			$this->logger->info(sprintf('Request done in %.2f', microtime(true) - $before));
76			} catch (\Exception $inner) {
77			$this->logger->error($inner->getMessage(), ['exception' => $inner]);
78			// Wrapping exception
79			throw new IoException('Error sending request', 0, $inner);
80			}
81			$code = $response->getStatusCode();
82			$this->logger->debug('Received status code ' . $code);
83
84			if ($code >= 400) {
85			$this->handleNot200($response);
86			}
87
88			return $response->getBody()->getContents();
89			}
90
91			/**
92			* Utility method, that prepares and signs request
93			*
94			* @param RequestInterface $request
95			* @return RequestInterface
96			*/
97			private function prepareRequest(RequestInterface $request)
98			{
99			$requestUrl = strval($request->getUri());
100			if ($this->url !== null
101			&& substr($requestUrl, 0, strlen(TransportInterface::DEFAULT_URL)) === TransportInterface::DEFAULT_URL
102			) {
103			// Replacing
104			$request = $request->withUri(
105			new Uri(str_replace(TransportInterface::DEFAULT_URL, $this->url, $requestUrl))
106			);
107			}
108
109			return $this->credentials->signRequest($request);
110			}
111
112			/**
113			* Utility function, that handles error response from Covery
114			*
115			* @param ResponseInterface $response
116			* @throws Exception
117			*/
118			private function handleNot200(ResponseInterface $response)
119			{
120			// Analyzing response
121			if ($response->hasHeader('X-Maxwell-Status') && $response->hasHeader('X-Maxwell-Error-Message')) {
122			// Extended data available
123			$message = $response->getHeaderLine('X-Maxwell-Error-Message');
124			$type = $response->getHeaderLine('X-Maxwell-Error-Type');
125			if (strpos($type, 'AuthorizationRequiredException') !== false) {
126			$this->logger->error('Authentication failure ' . $message);
127			throw new AuthException($message, $response->getStatusCode());
128			}
129
130			switch ($message) {
131			case 'Empty auth token':
132			case 'Empty signature':
133			case 'Empty nonce':
134			$this->logger->error('Authentication failure ' . $message);
135			throw new AuthException($message, $response->getStatusCode());
136			}
137
138			$this->logger->error('Covery error ' . $message);
139			throw new DeliveredException($message, $response->getStatusCode());
140			}
141
142
143			throw new Exception("Communication failed with status code {$response->getStatusCode()}");
144			}
145
146			/**
147			* Utility method, that reads JSON data
148			*
149			* @param $string
150			* @return mixed\|null
151			* @throws Exception
152			*/
153			private function readJson($string)
154			{
155			if (!is_string($string)) {
156			throw new Exception("Unable to read JSON - not a string received");
157			}
158			if (strlen($string) === 0) {
159			return null;
160			}
161
162			$data = json_decode($string, true);
163			if ($data === null) {
164			$message = 'Unable to decode JSON';
165			if (function_exists('json_last_error_msg')) {
166			$message = json_last_error_msg();
167			}
168
169			throw new Exception($message);
170			}
171
172			return $data;
173			}
174
175			/**
176			* Sends request to Covery and returns access level, associated with
177			* used credentials
178			*
179			* This method can be used for Covery health check and availability
180			* On any problem (network, credentials, server side) this method
181			* will throw an exception
182			*
183			* @return string
184			* @throws Exception
185			*/
186			public function ping()
187			{
188			$data = $this->readJson($this->send(new Ping()));
189			if (!is_array($data) \|\| !isset($data['level'])) {
190			throw new Exception("Malformed response");
191			}
192
193			return $data['level'];
194			}
195
196			/**
197			* Sends envelope to Covery and returns it's ID on Covery side
198			* Before sending, validation is performed
199			*
200			* @param EnvelopeInterface $envelope
201			* @return int
202			* @throws Exception
203			*/
204			public function sendEvent(EnvelopeInterface $envelope)
205			{
206			// Validating
207			$this->validator->validate($envelope);
208
209			// Sending
210			$data = $this->readJson($this->send(new Event($envelope)));
211
212			if (!is_array($data) \|\| !isset($data['requestId']) \|\| !is_int($data['requestId'])) {
213			throw new Exception("Malformed response");
214			}
215
216			return $data['requestId'];
217			}
218
219			/**
220			* Sends envelope to Covery for analysis
221			*
222			* @param EnvelopeInterface $envelope
223			* @return Result
224			* @throws Exception
225			*/
226			public function makeDecision(EnvelopeInterface $envelope)
227			{
228			// Validating
229			$this->validator->validate($envelope);
230
231			// Sending
232			$data = $this->readJson($this->send(new Decision($envelope)));
233
234			if (!is_array($data)) {
235			throw new Exception("Malformed response");
236			}
237
238			try {
239			return new Result(
240			$data['requestId'],
241			$data['score'],
242			$data['accept'],
243			$data['reject'],
244			$data['manual']
245			);
246			} catch (\Exception $error) {
247			throw new Exception('Malformed response', 0, $error);
248			}
249			}
250			}
251

covery / php-client

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PublicAPIClient::prepareRequest() A

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