/**
* Instantiate a probe object.
*
* @param string $query An URL-encoded string that configures the probe. Part of the string is signed.
* @param string $serverId An id that is given to the agent for signature impersonation.
* @param string $serverToken The token associated to $serverId.
* @param string $agentSocket The URL where profiles will be written (directory, socket or TCP destination).
*
* @api
*/
public function __construct($query, $serverId = null, $serverToken = null, $agentSocket = null)
{
if (false === self::$defaultAgentSocket) {
if ('Darwin' === PHP_OS) {
$defaultAgentSocket = '/usr/local/var/run/blackfire-agent.sock';
} else {
$defaultAgentSocket = '/var/run/blackfire/agent.sock';
}
if (!file_exists($defaultAgentSocket)) {
self::$defaultAgentSocket = null;
} else {
self::$defaultAgentSocket = 'unix://' . $defaultAgentSocket;
}
}
$this->seqId = self::$nextSeqId++;
$query = preg_split('/(?:^|&)signature=(.+?)(?:&|$)/', $query, 2, PREG_SPLIT_DELIM_CAPTURE);
list($this->challenge, $this->signature, $args) = $query + array(1 => '', '');
$this->signature = rawurldecode($this->signature);
parse_str($args, $args);
parse_str($this->challenge, $this->signedArgs);
$query = array('BLACKFIRE_SERVER_ID' => get_cfg_var('blackfire.server_id') ?: null, 'BLACKFIRE_SERVER_TOKEN' => get_cfg_var('blackfire.server_token') ?: null, 'BLACKFIRE_AGENT_SOCKET' => get_cfg_var('blackfire.agent_socket') ?: null, 'BLACKFIRE_AGENT_TIMEOUT' => get_cfg_var('blackfire.agent_timeout') ?: null, 'BLACKFIRE_LOG_LEVEL' => get_cfg_var('blackfire.log_level') ?: null, 'BLACKFIRE_LOG_FILE' => get_cfg_var('blackfire.log_file') ?: null);
foreach ($query as $k => $v) {
if (isset($_SERVER[$k])) {
$query[$k] = $_SERVER[$k];
}
}
$this->serverId = $serverId ? $serverId : $query['BLACKFIRE_SERVER_ID'];
$this->serverToken = $serverToken ? $serverToken : $query['BLACKFIRE_SERVER_TOKEN'];
$this->agentSocket = $agentSocket;
$this->agentSocket or $this->agentSocket = $query['BLACKFIRE_AGENT_SOCKET'];
$this->agentSocket or $this->agentSocket = self::$defaultAgentSocket;
$this->agentSocket or $this->agentSocket = ini_get('uprofiler.output_dir');
$this->agentSocket or $this->agentSocket = ini_get('xhprof.output_dir');
$this->agentTimeout = 1000000 * $query['BLACKFIRE_AGENT_TIMEOUT'];
$this->agentTimeout or $this->agentTimeout = 250000;
$query['BLACKFIRE_LOG_LEVEL'] and $this->logLevel = $query['BLACKFIRE_LOG_LEVEL'];
$query['BLACKFIRE_LOG_FILE'] and $this->logFile = $query['BLACKFIRE_LOG_FILE'];
$this->aggregSamples = isset($args['aggreg_samples']) && is_string($args['aggreg_samples']) ? max((int) $args['aggreg_samples'], 1) : 1;
if ($this->logFile && strpos($this->logFile, '://') === false) {
$this->logFile = 'file://' . $this->logFile;
} elseif (!$this->logFile) {
$this->logFile = 'php://stderr';
}
empty($args['flag_cpu']) or $this->flags |= UPROFILER_FLAGS_CPU;
empty($args['flag_memory']) or $this->flags |= UPROFILER_FLAGS_MEMORY;
empty($args['flag_no_builtins']) or $this->flags |= UPROFILER_FLAGS_NO_BUILTINS;
$this->options['blackfire_yml'] = !empty($args['flag_yml']);
if (function_exists('uprofiler_enable')) {
$this->profiler = 'uprofiler';
} elseif (function_exists('xhprof_enable')) {
$this->profiler = 'xhprof';
}
if ($this->logLevel >= 4) {
$this->debug('New probe instanciated');
foreach ($this as $k => $v) {
if ('options' !== $k && 'signedArgs' !== $k) {
if ('' !== ($v = (string) $v)) {
$this->debug(' ' . $k . ': ' . $v);
}
}
}
}
}
