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|
<?php
namespace Icinga\Module\Director\Core;
use Icinga\Application\Benchmark;
use RuntimeException;
class RestApiClient
{
protected $version = 'v1';
protected $peer;
protected $port;
protected $user;
protected $pass;
protected $curl;
protected $readBuffer = '';
protected $onEvent;
protected $onEventWantsRaw;
protected $keepAlive = true;
public function __construct($peer, $port = 5665, $cn = null)
{
$this->peer = $peer;
$this->port = $port;
}
// TODO: replace with Web2 CA trust resource plus cert and get rid
// of user/pass or at least strongly advise against using it
public function setCredentials($user, $pass)
{
$this->user = $user;
$this->pass = $pass;
return $this;
}
public function onEvent($callback, $raw = false)
{
$this->onEventWantsRaw = $raw;
$this->onEvent = $callback;
return $this;
}
public function getPeerIdentity()
{
return $this->peer;
}
public function setKeepAlive($keepAlive = true)
{
$this->keepAlive = (bool) $keepAlive;
return $this;
}
protected function url($url)
{
return sprintf('https://%s:%d/%s/%s', $this->peer, $this->port, $this->version, $url);
}
/**
* @param $method
* @param $url
* @param null $body
* @param bool $raw
* @param bool $stream
* @return RestApiResponse
*/
public function request($method, $url, $body = null, $raw = false, $stream = false)
{
if (function_exists('curl_version')) {
return $this->curlRequest($method, $url, $body, $raw, $stream);
} else {
throw new RuntimeException(
'No CURL extension detected, it must be installed and enabled'
);
}
}
protected function curlRequest($method, $url, $body = null, $raw = false, $stream = false)
{
$auth = sprintf('%s:%s', $this->user, $this->pass);
$headers = [
'Host: ' . $this->getPeerIdentity(),
];
if (! $this->keepAlive) {
// This fails on Icinga 2.9:
// $headers[] = 'Connection: close';
}
if (! $raw) {
$headers[] = 'Accept: application/json';
}
if ($body !== null) {
$body = Json::encode($body);
$headers[] = 'Content-Type: application/json';
}
$curl = $this->curl();
$opts = [
CURLOPT_URL => $this->url($url),
CURLOPT_HTTPHEADER => $headers,
CURLOPT_USERPWD => $auth,
CURLOPT_CUSTOMREQUEST => strtoupper($method),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CONNECTTIMEOUT => 3,
// TODO: Fix this!
CURLOPT_SSL_VERIFYHOST => false,
CURLOPT_SSL_VERIFYPEER => false,
];
if ($body !== null) {
$opts[CURLOPT_POSTFIELDS] = $body;
}
if ($stream) {
$opts[CURLOPT_WRITEFUNCTION] = [$this, 'readPart'];
$opts[CURLOPT_TCP_NODELAY] = 1;
}
curl_setopt_array($curl, $opts);
// TODO: request headers, validate status code
Benchmark::measure('Rest Api, sending ' . $url);
$res = curl_exec($curl);
if ($res === false) {
$error = curl_error($curl);
$this->disconnect();
throw new RuntimeException("CURL ERROR: $error");
}
$statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
if ($statusCode === 401) {
$this->disconnect();
throw new RuntimeException(
'Unable to authenticate, please check your API credentials'
);
}
Benchmark::measure('Rest Api, got response');
if (! $this->keepAlive) {
$this->disconnect();
}
if ($stream) {
return $this;
}
if ($raw) {
return $res;
} else {
return RestApiResponse::fromJsonResult($res);
}
}
/**
* @param resource $curl
* @param $data
* @return int
*/
protected function readPart($curl, &$data)
{
$length = strlen($data);
$this->readBuffer .= $data;
$this->processEvents();
return $length;
}
public function get($url, $body = null)
{
return $this->request('get', $url, $body);
}
public function getRaw($url, $body = null)
{
return $this->request('get', $url, $body, true);
}
public function post($url, $body = null)
{
return $this->request('post', $url, $body);
}
public function put($url, $body = null)
{
return $this->request('put', $url, $body);
}
public function delete($url, $body = null)
{
return $this->request('delete', $url, $body);
}
/**
* @return resource
*/
protected function curl()
{
if ($this->curl === null) {
$this->curl = curl_init(sprintf('https://%s:%d', $this->peer, $this->port));
if (! $this->curl) {
throw new RuntimeException('CURL INIT ERROR: ' . curl_error($this->curl));
}
}
return $this->curl;
}
protected function processEvents()
{
$offset = 0;
while (false !== ($pos = strpos($this->readBuffer, "\n", $offset))) {
if ($pos === $offset) {
// echo "Got empty line $offset / $pos\n";
$offset = $pos + 1;
continue;
}
$this->processReadBuffer($offset, $pos);
$offset = $pos + 1;
}
if ($offset > 0) {
$this->readBuffer = substr($this->readBuffer, $offset + 1);
}
// echo "REMAINING: " . strlen($this->readBuffer) . "\n";
}
protected function processReadBuffer($offset, $pos)
{
if ($this->onEvent === null) {
return;
}
$func = $this->onEvent;
$str = substr($this->readBuffer, $offset, $pos);
// printf("Processing %s bytes\n", strlen($str));
if ($this->onEventWantsRaw) {
$func($str);
} else {
$func(Json::decode($str));
}
}
public function disconnect()
{
if ($this->curl !== null) {
if (is_resource($this->curl)) {
@curl_close($this->curl);
}
$this->curl = null;
}
}
public function __destruct()
{
$this->disconnect();
}
}
|
