/**
* Make Request
*
* Makes a request to the Voyager Restful API
*
* @param array $hierarchy Array of key-value pairs to embed in the URL path of
* the request (set value to false to inject a non-paired value).
* @param array $params A keyed array of query data
* @param string $mode The http request method to use (Default of GET)
* @param string $xml An optional XML string to send to the API
*
* @return obj A Simple XML Object loaded with the xml data returned by the API
* @access protected
*/
protected function makeRequest($hierarchy, $params = false, $mode = "GET", $xml = false)
{
// Build Url Base
$urlParams = "http://{$this->ws_host}:{$this->ws_port}/{$this->ws_app}";
// Add Hierarchy
foreach ($hierarchy as $key => $value) {
$hierarchyString[] = $value !== false ? urlencode($key) . "/" . urlencode($value) : urlencode($key);
}
// Add Params
foreach ($params as $key => $param) {
$queryString[] = $key . "=" . urlencode($param);
}
// Build Hierarchy
$urlParams .= "/" . implode("/", $hierarchyString);
// Build Params
if (isset($queryString)) {
$urlParams .= "?" . implode("&", $queryString);
}
if ($mode == 'GET' && isset($this->getCache[$urlParams])) {
return $this->getCache[$urlParams];
}
// Create Proxy Request
$client = new Proxy_Request($urlParams);
if ($this->sessionId) {
$client->addCookie('JSESSIONID', $this->sessionId);
}
// Select Method
if ($mode == "POST") {
$client->setMethod(HTTP_REQUEST_METHOD_POST);
if ($xml) {
$client->addRawPostData($xml);
}
} else {
if ($mode == "PUT") {
$client->setMethod(HTTP_REQUEST_METHOD_PUT);
$client->addRawPostData($xml);
} else {
if ($mode == "DELETE") {
$client->setMethod(HTTP_REQUEST_METHOD_DELETE);
} else {
$client->setMethod(HTTP_REQUEST_METHOD_GET);
}
}
}
// Send Request and Retrieve Response
$startTime = microtime(true);
if (PEAR::isError($client->sendRequest())) {
error_log("VoyagerRestful: failed to send request to {$urlParams}");
return false;
}
$code = $client->getResponseCode();
if ($code >= 400) {
error_log("VoyagerRestful: HTTP Request failed with error code {$code}. Request url: {$urlParams}, response: " . $client->getResponseBody());
}
$cookies = $client->getResponseCookies();
if ($cookies) {
foreach ($cookies as $cookie) {
if ($cookie['name'] == 'JSESSIONID') {
$this->sessionId = $cookie['value'];
}
}
}
$xmlResponse = $client->getResponseBody();
$this->debugLog('[' . round(microtime(true) - $startTime, 4) . "s] {$this->sessionId} {$mode} request {$urlParams}, body:\n{$xml}\nResults:\n{$xmlResponse}");
$oldLibXML = libxml_use_internal_errors();
libxml_use_internal_errors(true);
$simpleXML = simplexml_load_string($xmlResponse);
libxml_use_internal_errors($oldLibXML);
if ($simpleXML === false) {
$logger = new Logger();
$error = libxml_get_last_error();
error_log('VoyagerRestful: Failed to parse response XML: ' . $error->message . ", response:\n" . $xmlResponse);
$logger->log('Failed to parse response XML: ' . $error->message . ", response:\n" . $xmlResponse, PEAR_LOG_ERR);
$this->debugLog('Failed to parse response XML: ' . $error->message . ", response:\n" . $xmlResponse);
return false;
}
if ($mode == 'GET') {
$this->getCache[$urlParams] = $simpleXML;
}
return $simpleXML;
}
