Connector::__call() - Code Metrics - Inspection of "async interface conform other connectors" - kingsquare/communibase-connector-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Pull Request — master (#23)

unknown
created 2016-02-22 22:24 UTC
Connector::__call() A

↳ Parent: Connector
Complexity

Conditions	3
Paths	3
Size

Total Lines	12
Code Lines	6
Duplication

Lines	0
Ratio	0 %
Importance

Changes	2
Bugs	0	Features	0
Metric	Value
c	2
b	0
f	0
dl	0
loc	12
rs	9.4285
cc	3
eloc	6
nc	3
nop	2
<?php
namespace Communibase;

use Communibase\Logging\QueryLogger;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Exception\ClientException;
use GuzzleHttp\Promise\Promise;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;

/**
 * Communibase (https://communibase.nl) data Connector for PHP
 *
 * For more information see https://communibase.nl
 *
 * Following are IDE hints for sync method versions:
 *
 * @method string getTemplateSync(string $entityType) Returns all the fields according to the definition.
 * @method array getByIdSync(string $entityType, string $id) Get an entity by id
 * @method array getByIdsSync(string $entityType, array $ids, array $params = []) Get an array of entities by their ids
 * @method array getAllSync(string $entityType, array $params) Get all entities of a certain type
 * @method array getIdSync(string $entityType, array $selector) Get the id of an entity based on a search
 * @method array getHistorySync(string $entityType, string $id) Returns an array of the history for the entity
 * @method array destroySync(string $entityType, string $id) Delete something from Communibase
 *
 * @package Communibase
 * @author Kingsquare ([email protected])
 * @copyright Copyright (c) Kingsquare BV (http://www.kingsquare.nl)
 * @license http://opensource.org/licenses/MIT The MIT License (MIT)
 */
class Connector implements ConnectorInterface
{
    /**
     * The official service URI; can be overridden via the constructor
     *
     * @var string
     */
    const SERVICE_PRODUCTION_URL = 'https://api.communibase.nl/0.1/';

    /**
     * The API key which is to be used for the api.
     * Is required to be set via the constructor.
     *
     * @var string
     */
    private $apiKey;

    /**
     * The url which is to be used for this connector. Defaults to the production url.
     * Can be set via the constructor.
     *
     * @var string
     */
    private $serviceUrl;

    /**
     * @var array of extra headers to send with each request
     */
    private $extraHeaders = [];

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

    /**
     * @var ClientInterface
     */
    private $client;

    /**
     * Create a new Communibase Connector instance based on the given api-key and possible serviceUrl
     *
     * @param string $apiKey The API key for Communibase
     * @param string $serviceUrl The Communibase API endpoint; defaults to self::SERVICE_PRODUCTION_URL
     * @param ClientInterface $client An optional GuzzleHttp Client (or Interface for mocking)
     */
    public function __construct(
            $apiKey,
            $serviceUrl = self::SERVICE_PRODUCTION_URL,
            ClientInterface $client = null
    ) {
        $this->apiKey = $apiKey;
        $this->serviceUrl = $serviceUrl;
        $this->client = $client;
    }

    /**
     * Returns an array that has all the fields according to the definition in Communibase.
     *
     * @param string $entityType
     *
     * @return Promise of result
     *
     * @throws Exception
     */
    public function getTemplate($entityType)
    {
        $params = [
            'fields' => 'attributes.title',
            'limit' => 1,
        ];

        return $this->search('EntityType', ['title' => $entityType], $params)->then(function ($definition) {
            return array_fill_keys(array_merge(['_id'], array_column($definition[0]['attributes'], 'title')), null);
        });
    }

    /**
     * Get a single Entity by its id
     *
     * @param string $entityType
     * @param string $id
     * @param array $params (optional)
     *
     * @return Promise of result
     *
     * @throws Exception
     */
    public function getById($entityType, $id, array $params = [])
    {
        if (empty($id)) {
            throw new Exception('Id is empty');
        }
        if (!$this->isIdValid($id)) {
            throw new Exception('Id is invalid, please use a correctly formatted id');
        }

        return $this->doGet($entityType . '.json/crud/' . $id, $params);
    }

    /**
     * NOTE not yet async
     *
     * Get a single Entity by a ref-string
     *
     * @param string $ref
     * @param array $parentEntity (optional)
     *
     * @return array the referred Entity data
     *
     * @throws Exception
     */
    public function getByRef($ref, array $parentEntity = [])
    {
        $refParts = explode('.', $ref);
        if ($refParts[0] !== 'parent') {
            $entityParts = explode('|', $refParts[0]);
            $parentEntity = $this->getById($entityParts[0], $entityParts[1]);
        }
        if (empty($refParts[1])) {
            return $parentEntity;

        }
        $propertyParts = explode('|', $refParts[1]);
        foreach ($parentEntity[$propertyParts[0]] as $subEntity) {
            if ($subEntity['_id'] === $propertyParts[1]) {
                return $subEntity;
            }
        }
        throw new Exception('Could not find the referred Entity');
    }

    /**
     * Get an array of entities by their ids
     *
     * @param string $entityType
     * @param array $ids
     * @param array $params (optional)
     *
     * @return Promise of result
     */
    public function getByIds($entityType, array $ids, array $params = [])
    {
        $validIds = array_values(array_unique(array_filter($ids, [$this, 'isIdValid'])));

        if (empty($validIds)) {
            return [];
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
        }

        $doSortByIds = empty($params['sort']);

        return $this->search($entityType, ['_id' => ['$in' => $validIds]], $params)->then(function ($results) use ($doSortByIds, $validIds) {
            if (!$doSortByIds) {
                return $results;
            }

            $flipped = array_flip($validIds);
            foreach ($results as $result) {
                $flipped[$result['_id']] = $result;
            }
            return array_filter(array_values($flipped), function ($result) {
                return is_array($result) && !empty($result);
            });
        });
    }

    /**
     * Get all entities of a certain type
     *
     * @param string $entityType
     * @param array $params (optional)
     *
     * @return Promise of result
     */
    public function getAll($entityType, array $params = [])
    {
        return $this->doGet($entityType . '.json/crud/', $params);
    }

    /**
     * Get result entityIds of a certain search
     *
     * @param string $entityType
     * @param array $selector (optional)
     * @param array $params (optional)
     *
     * @return Promise of result
     */
    public function getIds($entityType, array $selector = [], array $params = [])
    {
        $params['fields'] = '_id';

        return $this->search($entityType, $selector, $params)->then(function ($results) {
            return array_column($results, '_id');
        });
    }

    /**
     * Get the id of an entity based on a search
     *
     * @param string $entityType i.e. Person
     * @param array $selector (optional) i.e. ['firstName' => 'Henk']
     *
     * @return Promise of result
     */
    public function getId($entityType, array $selector = [])
    {
        $params = ['limit' => 1];
        $ids = (array)$this->getIds($entityType, $selector, $params);

        return array_shift($ids);
    }

    /**
     * Returns an array of the history for the entity with the following format:
     *
     * <code>
     *  [
     *        [
     *            'updatedBy' => '', // name of the user
     *            'updatedAt' => '', // a string according to the DateTime::ISO8601 format
     *            '_id' => '', // the ID of the entity which can ge fetched seperately
     *        ],
     *        ...
     * ]
     * </code>
     *
     * @param string $entityType
     * @param string $id
     *
     * @return Promise of result
     *
     * @throws Exception
     */
    public function getHistory($entityType, $id)
    {
        return $this->doGet($entityType . '.json/history/' . $id);
    }

    /**
     * Search for the given entity by optional passed selector/params
     *
     * @param string $entityType
     * @param array $querySelector
     * @param array $params (optional)
     *
     * @return Promise of result
     *
     * @throws Exception
     */
    public function search($entityType, array $querySelector, array $params = [])
    {
        return $this->doPost($entityType . '.json/search', $params, $querySelector);
    }

    /**
     * This will save an entity in Communibase. When a _id-field is found, this entity will be updated
     *
     * NOTE: When updating, depending on the Entity, you may need to include all fields.
     *
     * @param string $entityType
     * @param array $properties - the to-be-saved entity data
     *
     * @returns Promise of result
     *
     * @throws Exception
     */
    public function update($entityType, array $properties)
    {
        $isNew = empty($properties['_id']);

        return $this->{$isNew ? 'doPost' : 'doPut'}(
            $entityType . '.json/crud/' . ($isNew ? '' : $properties['_id']),
            [],
            $properties
        );
    }

    /**
     * Finalize an invoice by adding an invoiceNumber to it.
     * Besides, invoice items will receive a "generalLedgerAccountNumber".
     * This number will be unique and sequential within the "daybook" of the invoice.
     *
     * NOTE: this is Invoice specific
     *
     * @param string $entityType
     * @param string $id
     *
     * @return Promise of result
     *
     * @throws Exception
     */
    public function finalize($entityType, $id)
    {
        if ($entityType !== 'Invoice') {
            throw new Exception('Cannot call finalize on ' . $entityType);
        }

        return $this->doPost($entityType . '.json/finalize/' . $id);
    }

    /**
     * Delete something from Communibase
     *
     * @param string $entityType
     * @param string $id
     *
     * @return Promise of result
     */
    public function destroy($entityType, $id)
    {
        return $this->doDelete($entityType . '.json/crud/' . $id);
    }

    /**
     * Get the binary contents of a file by its ID
     *
     * NOTE: for meta-data like filesize and mimetype, one can use the getById()-method.
     *
     * @param string $id id string for the file-entity
     *
     * @return StreamInterface Binary contents of the file. Since the stream can be made a string this works like a charm!
     *
     * @throws Exception
     */
    public function getBinary($id)
    {
        if (!$this->isIdValid($id)) {
            throw new Exception('Invalid $id passed. Please provide one.');
        }

        return $this->call('get', ['File.json/binary/' . $id])->then(function (ResponseInterface $response) {
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
            return $response->getBody();
        });
    }

    /**
     * Uploads the contents of the resource (this could be a file handle) to Communibase
     *
     * @param StreamInterface $resource
     * @param string $name
     * @param string $destinationPath
     * @param string $id
     *
     * @return array|mixed
     * @throws Exception
     */
    public function updateBinary(StreamInterface $resource, $name, $destinationPath, $id = '')
    {
        $metaData = ['path' => $destinationPath];
        if (empty($id)) {
            $options = [
                'multipart' => [
                    [
                        'name' => 'File',
                        'filename' => $name,
                        'contents' => $resource
                    ],
                    [
                        'name' => 'metadata',
                        'contents' => json_encode($metaData),
                    ]
                ]
            ];

            return $this->call('post', ['File.json/binary', $options])->then(function (ResponseInterface $response) {
                return $this->parseResult($response->getBody(), $response->getStatusCode());
            });

        }

        return $this->doPut('File.json/crud/' . $id, [], [
                'filename' => $name,
                'length' => $resource->getSize(),
                'uploadDate' => date('c'),
                'metadata' => $metaData,
                'content' => base64_encode($resource->getContents()),
        ]);
    }

    /**
     * MAGIC for making async sync
     *
     * @param string $name
     * @param array $arguments
     *
     * @return mixed
     */
    public function __call($name, $arguments)
    {
        if (preg_match('#(.*)Sync$#', $name, $matches)) {
            if (is_callable([$this, $matches[1]])) {
                $promise = call_user_func_array([$this, $matches[1]], $arguments);

                /* @var Promise $promise */
                return $promise->wait();
            }
        }
        return null;
    }

    /**
     * @param string $path
     * @param array $params
     * @param array $data
     *
     * @return Promise
     *
     * @throws Exception
     */
    protected function doGet($path, array $params = null, array $data = null)
    {
        return $this->getResult('GET', $path, $params, $data);
    }

    /**
     * @param string $path
     * @param array $params
     * @param array $data
     *
     * @return Promise
     *
     * @throws Exception
     */
    protected function doPost($path, array $params = null, array $data = null)
    {
        return $this->getResult('POST', $path, $params, $data);
    }

    /**
     * @param string $path
     * @param array $params
     * @param array $data
     *
     * @return Promise
     *
     * @throws Exception
     */
    protected function doPut($path, array $params = null, array $data = null)
    {
        return $this->getResult('PUT', $path, $params, $data);
    }

    /**
     * @param string $path
     * @param array $params
     * @param array $data
     *
     * @return Promise
     *
     * @throws Exception
     */
    protected function doDelete($path, array $params = null, array $data = null)
    {
        return $this->getResult('DELETE', $path, $params, $data);
    }

    /**
     * Process the request
     *
     * @param string $method
     * @param string $path
     * @param array $params
     * @param array $data
     *
     * @return Promise array i.e. [success => true|false, [errors => ['message' => 'this is broken', ..]]]
     *
     * @throws Exception
     */
    protected function getResult($method, $path, array $params = null, array $data = null)
    {
        if ($params === null) {
            $params = [];
        }
        $options = [
            'query' => $this->preParseParams($params),
        ];
        if (!empty($data)) {
            $options['json'] = $data;
        }

        return $this->call($method, [$path, $options])->then(function (ResponseInterface $response) {

            return $this->parseResult($response->getBody(), $response->getStatusCode());

        })->otherwise(function (\Exception $ex) {

            // GuzzleHttp\Exception\ClientException
            // Communibase\Exception

            if ($ex instanceof ClientException) {

                if ($ex->getResponse()->getStatusCode() !== 200) {
                    throw new Exception(
                        $ex->getMessage(),
                        $ex->getResponse()->getStatusCode(),
                        null,
                        []
                    );
                }

            }

            throw $ex;

        });

    }

    /**
     * @param array $params
     *
     * @return mixed
     */
    private function preParseParams(array $params)
    {
        if (!array_key_exists('fields', $params) || !is_array($params['fields'])) {
            return $params;
        }

        $fields = [];
        foreach ($params['fields'] as $index => $field) {
            if (!is_numeric($index)) {
                $fields[$index] = $field;
                continue;
            }

            $modifier = 1;
            $firstChar = substr($field, 0, 1);
            if ($firstChar == '+' || $firstChar == '-') {
                $modifier = $firstChar == '+' ? 1 : 0;
                $field = substr($field, 1);
            }
            $fields[$field] = $modifier;
        }
        $params['fields'] = $fields;

        return $params;
    }

    /**
     * Parse the Communibase result and if necessary throw an exception
     *
     * @param string $response
     * @param int $httpCode
     *
     * @return array
     *
     * @throws Exception
     */
    private function parseResult($response, $httpCode)
    {
        $result = json_decode($response, true);

        if (is_array($result)) {
            return $result;
        }

        throw new Exception('"' . $this->getLastJsonError() . '" in ' . $response, $httpCode);
    }

    /**
     * Error message based on the most recent JSON error.
     *
     * @see http://nl1.php.net/manual/en/function.json-last-error.php
     *
     * @return string
     */
    private function getLastJsonError()
    {
        $jsonLastError = json_last_error();
        $messages = [
                JSON_ERROR_DEPTH => 'Maximum stack depth exceeded',
                JSON_ERROR_STATE_MISMATCH => 'Underflow or the modes mismatch',
                JSON_ERROR_CTRL_CHAR => 'Unexpected control character found',
                JSON_ERROR_SYNTAX => 'Syntax error, malformed JSON',
                JSON_ERROR_UTF8 => 'Malformed UTF-8 characters, possibly incorrectly encoded',
        ];

        return (isset($messages[$jsonLastError]) ? $messages[$jsonLastError] : 'Empty response received');
    }

    /**
     * @param string $id
     *
     * @return bool
     */
    public static function isIdValid($id)
    {
        if (empty($id)) {
            return false;
        }

        if (preg_match('#[0-9a-fA-F]{24}#', $id) === 0) {
            return false;
        }

        return true;
    }

    /**
     * Generate a Communibase compatible ID, that consists of:
     *
     * a 4-byte timestamp,
     * a 3-byte machine identifier,
     * a 2-byte process id, and
     * a 3-byte counter, starting with a random value.
     *
     * @return string
     */
    public static function generateId()
    {
        static $inc = 0;

        $ts = pack('N', time());
        $m = substr(md5(gethostname()), 0, 3);
        $pid = pack('n', 1); //posix_getpid()
        $trail = substr(pack('N', $inc++), 1, 3);

        $bin = sprintf("%s%s%s%s", $ts, $m, $pid, $trail);
        $id = '';
        for ($i = 0; $i < 12; $i++) {
            $id .= sprintf("%02X", ord($bin[$i]));
        }

        return strtolower($id);
    }

    /**
     * Add extra headers to be added to each request
     *
     * @see http://php.net/manual/en/function.header.php
     *
     * @param array $extraHeaders
     */
    public function addExtraHeaders(array $extraHeaders)
    {
        $this->extraHeaders = array_change_key_case($extraHeaders, CASE_LOWER);
    }

    /**
     * @param QueryLogger $logger
     */
    public function setQueryLogger(QueryLogger $logger)
    {
        $this->logger = $logger;
    }

    /**
     * @return QueryLogger
     */
    public function getQueryLogger()
    {
        return $this->logger;
    }

    /**
     * @return \GuzzleHttp\Client
     * @throws Exception
     */
    protected function getClient()
    {
        if ($this->client instanceof ClientInterface) {
            return $this->client;
        }

        if (empty($this->apiKey)) {
            throw new Exception('Use of connector not possible without API key', Exception::INVALID_API_KEY);
        }

        $this->client = new \GuzzleHttp\Client([
            'base_uri' => $this->serviceUrl,
            'headers' => array_merge($this->extraHeaders, [
                'User-Agent' => 'Connector-PHP/2',
                'X-Api-Key' => $this->apiKey,
            ])
        ]);

        return $this->client;
    }

    /**
     * @param string $method
     * @param array $arguments
     *
     * @return Promise
     *
     * @throws Exception
     */
    private function call($method, array $arguments)
    {
        if (isset($this->extraHeaders['host'])) {
            $arguments[1]['headers']['Host'] = $this->extraHeaders['host'];
        }

        $idx = null; // the query index
        if ($this->getQueryLogger()) {
            $idx = $this->getQueryLogger()->startQuery($method . ' ' . reset($arguments), $arguments);
        }

        $promise = call_user_func_array([$this->getClient(), $method . 'Async'], $arguments);
        /* @var Promise $promise */
        return $promise->then(function ($response) use ($idx) {

            if ($this->getQueryLogger()) {
                $this->getQueryLogger()->stopQuery($idx);
            }

            return $response;
        });
    }

}

kingsquare / communibase-connector-php

Pull Request — master (#23)

Connector::__call() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like
