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<?php
namespace Icinga\Module\Graphite\Graphing;
use GuzzleHttp\Client;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Psr7\Request;
use Icinga\Web\Url;
/**
* HTTP interface to Graphite Web
*/
class GraphiteWebClient
{
/**
* Base URL of every Graphite Web HTTP request
*
* @var Url
*/
protected $baseUrl;
/**
* HTTP basic auth user for every Graphite Web HTTP request
*
* @var string|null
*/
protected $user;
/**
* The above user's password
*
* @var string|null
*/
protected $password;
/**
* Don't verify the remote's TLS certificate
*
* @var bool
*/
protected $insecure = false;
/**
* Timeout for every Graphite Web HTTP request
*
* @var ?int
*/
protected $timeout;
/**
* HTTP client
*
* @var ClientInterface
*/
protected $httpClient;
/**
* Constructor
*
* @param Url $baseUrl Base URL of every Graphite Web HTTP request
*/
public function __construct(Url $baseUrl)
{
$this->httpClient = new Client();
$this->setBaseUrl($baseUrl);
}
/**
* Send an HTTP request to the configured Graphite Web and return the response's body
*
* @param Url $url
* @param string $method
* @param string[] $headers
* @param string $body
*
* @return string
*/
public function request(Url $url, $method = 'GET', array $headers = [], $body = null)
{
$headers['User-Agent'] = 'icingaweb2-module-graphite';
if ($this->user !== null) {
$headers['Authorization'] = 'Basic ' . base64_encode("{$this->user}:{$this->password}");
}
// TODO(ak): keep connections alive (TCP handshakes are a bit expensive and TLS handshakes are very expensive)
return (string) $this->httpClient->send(
new Request($method, $this->completeUrl($url)->getAbsoluteUrl(), $headers, $body),
[
'curl' => [
CURLOPT_SSL_VERIFYPEER => ! $this->insecure
],
'timeout' => $this->timeout ?? 10
]
)->getBody();
}
/**
* Complete the given relative URL according to the base URL
*
* @param Url $url
*
* @return Url
*/
public function completeUrl(Url $url)
{
$completeUrl = clone $this->baseUrl;
return $completeUrl
->setPath(ltrim(rtrim($completeUrl->getPath(), '/') . '/' . ltrim($url->getPath(), '/'), '/'))
->setParams($url->getParams());
}
/**
* Get the base URL of every Graphite Web HTTP request
*
* @return Url
*/
public function getBaseUrl()
{
return $this->baseUrl;
}
/**
* Set the base URL of every Graphite Web HTTP request
*
* @param Url $baseUrl
*
* @return $this
*/
public function setBaseUrl(Url $baseUrl)
{
$this->baseUrl = $baseUrl;
return $this;
}
/**
* Get the HTTP basic auth user
*
* @return null|string
*/
public function getUser()
{
return $this->user;
}
/**
* Set the HTTP basic auth user
*
* @param null|string $user
*
* @return $this
*/
public function setUser($user)
{
$this->user = $user;
return $this;
}
/**
* Get the HTTP basic auth password
*
* @return null|string
*/
public function getPassword()
{
return $this->password;
}
/**
* Set the HTTP basic auth password
*
* @param null|string $password
*
* @return $this
*/
public function setPassword($password)
{
$this->password = $password;
return $this;
}
/**
* Get whether not to verify the remote's TLS certificate
*
* @return bool
*/
public function getInsecure()
{
return $this->insecure;
}
/**
* Set whether not to verify the remote's TLS certificate
*
* @param bool $insecure
*
* @return $this
*/
public function setInsecure($insecure = true)
{
$this->insecure = $insecure;
return $this;
}
/**
* Get the HTTP request timeout
*
* @return ?int
*/
public function getTimeout(): ?int
{
return $this->timeout;
}
/**
* Set the HTTP request timeout
*
* @param ?int $timeout
*
* @return $this
*/
public function setTimeout(?int $timeout): self
{
$this->timeout = $timeout;
return $this;
}
}
|
