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<?php
namespace GuzzleHttp\Subscriber\Log;
use GuzzleHttp\Message\MessageInterface;
use GuzzleHttp\Message\RequestInterface;
use GuzzleHttp\Message\ResponseInterface;
/**
* Formats log messages using variable substitutions for requests, responses,
* and other transactional data.
*
* The following variable substitutions are supported:
*
* - {request}: Full HTTP request message
* - {response}: Full HTTP response message
* - {ts}: Timestamp
* - {host}: Host of the request
* - {method}: Method of the request
* - {url}: URL of the request
* - {host}: Host of the request
* - {protocol}: Request protocol
* - {version}: Protocol version
* - {resource}: Resource of the request (path + query + fragment)
* - {hostname}: Hostname of the machine that sent the request
* - {code}: Status code of the response (if available)
* - {phrase}: Reason phrase of the response (if available)
* - {error}: Any error messages (if available)
* - {req_header_*}: Replace `*` with the lowercased name of a request header to add to the message
* - {res_header_*}: Replace `*` with the lowercased name of a response header to add to the message
* - {req_headers}: Request headers
* - {res_headers}: Response headers
* - {req_body}: Request body
* - {res_body}: Response body
*/
class Formatter
{
/**
* Apache Common Log Format.
* @link http://httpd.apache.org/docs/1.3/logs.html#common
* @var string
*/
const CLF = "{hostname} {req_header_User-Agent} - [{ts}] \"{method} {resource} {protocol}/{version}\" {code} {res_header_Content-Length}";
const DEBUG = ">>>>>>>>\n{request}\n<<<<<<<<\n{response}\n--------\n{error}";
const SHORT = '[{ts}] "{method} {resource} {protocol}/{version}" {code}';
/** @var string Template used to format log messages */
private $template;
/**
* @param string $template Log message template
*/
public function __construct($template = self::CLF)
{
$this->template = $template ?: self::CLF;
}
/**
* Returns a formatted message
*
* @param RequestInterface $request Request that was sent
* @param ResponseInterface $response Response that was received
* @param \Exception $error Exception that was received
* @param array $customData Associative array of custom template data
*
* @return string
*/
public function format(
RequestInterface $request,
ResponseInterface $response = null,
\Exception $error = null,
array $customData = []
) {
$cache = $customData;
return preg_replace_callback(
'/{\s*([A-Za-z_\-\.0-9]+)\s*}/',
function (array $matches) use ($request, $response, $error, &$cache) {
if (isset($cache[$matches[1]])) {
return $cache[$matches[1]];
}
$result = '';
switch ($matches[1]) {
case 'request':
$result = $request;
break;
case 'response':
$result = $response;
break;
case 'req_headers':
$result = trim($request->getMethod() . ' '
. $request->getResource()) . ' HTTP/'
. $request->getProtocolVersion() . "\r\n"
. $this->headers($request);
break;
case 'res_headers':
$result = $response ?
sprintf(
'HTTP/%s %d %s',
$response->getProtocolVersion(),
$response->getStatusCode(),
$response->getReasonPhrase()
) . "\r\n" . $this->headers($response)
: 'NULL';
break;
case 'req_body':
$result = $request->getBody();
break;
case 'res_body':
$result = $response ? $response->getBody() : 'NULL';
break;
case 'ts':
$result = gmdate('c');
break;
case 'method':
$result = $request->getMethod();
break;
case 'url':
$result = $request->getUrl();
break;
case 'resource':
$result = $request->getResource();
break;
case 'req_version':
$result = $request->getProtocolVersion();
break;
case 'res_version':
$result = $response
? $response->getProtocolVersion()
: 'NULL';
break;
case 'host':
$result = $request->getHost();
break;
case 'hostname':
$result = gethostname();
break;
case 'code':
$result = $response
? $response->getStatusCode()
: 'NULL';
break;
case 'phrase':
$result = $response
? $response->getReasonPhrase()
: 'NULL';
break;
case 'error':
$result = $error ? $error->getMessage() : 'NULL';
break;
default:
// handle prefixed dynamic headers
if (strpos($matches[1], 'req_header_') === 0) {
$result = $request->getHeader(substr($matches[1], 11));
} elseif (strpos($matches[1], 'res_header_') === 0) {
$result = $response
? $response->getHeader(substr($matches[1], 11))
: 'NULL';
}
}
$cache[$matches[1]] = $result;
return $result;
},
$this->template
);
}
private function headers(MessageInterface $message)
{
$result = '';
foreach ($message->getHeaders() as $name => $values) {
$result .= $name . ': ' . implode(', ', $values) . "\r\n";
}
return trim($result);
}
}