couchdb_nr_custom_datastore.php

<?php 

class CouchApi {    

    /**
     * @param $request \GuzzleHttp\Psr7\Request
     * @return mixed
     */
    private function _send_request($request) {
        $client = $this->guzzle_client();
        $cb = function () use ($request, $client) {
            return $client->send($request);
        };
        $params = self::getNewRelicDataSegmentParamsFor($request);

        return newrelic_record_datastore_segment($cb, $params);
    }

    /**
     * @param $request \GuzzleHttp\Psr7\Request
     * @return array
     */
    private static function getNewRelicDataSegmentParamsFor($request) {
        $uri = $request->getUri();
        $data = [
            'product'      => 'CouchDB',
            'collection'   => $uri->getPath(),
            'operation'    => $request->getMethod(),
            'query'        => $request->getRequestTarget(),
            'host'         => Environment::privateCouchHost(),
            'portPathOrId' => Environment::privateCouchPort()
        ];

        return $data;
    }

}