Enhancement: a check for CouchDB

Related: easybib/issues#4396

Author: till

src/ZendDiagnostics/Check/CouchDBCheck.php

@@ -0,0 +1,64 @@
+<?php
+/**
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendDiagnostics\Check;
+
+use ZendDiagnostics\Result;
+
+/**
+ * Ensures a connection to CouchDB is possible.
+ */
+class CouchDB extends GuzzleHttpService
+{
+    /**
+     * @param array $couchDbSettings
+     *
+     * @return self
+     */
+    public function __construct(array $couchDbSettings)
+    {
+        $couchDbUrl = '';
+        if ($couchDbSettings['port'] === '5984' || $couchDbSettings['port'] === '80') {
+            $couchDbUrl .= 'http://';
+        } else {
+            $couchDbUrl .= 'https://';
+        }
+
+        if ($couchDbSettings['username'] && $couchDbSettings['password']) {
+            $couchDbUrl .= sprintf(
+                '%s:%s@',
+                $couchDbSettings['username'],
+                $couchDbSettings['password']
+            );
+        }
+
+        $couchDbUrl .= sprintf(
+            '%s:%s/%s',
+            $couchDbSettings['host'],
+            $couchDbSettings['port'],
+            $couchDbSettings['dbname']
+        );
+
+        parent::__construct($couchDbUrl);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function check()
+    {
+        $result = parent::check();
+        if ($result instanceof Result\Success) {
+            return $result;
+        }
+
+        $msg = $result->getMessage();
+        $msg = preg_replace('=\/\/(.+):{1}(.+)(\@){1}=i', '//', $msg);
+
+        $failure = new Result\Failure($msg, $result->getData());
+
+        return $failure;
+    }
+}