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PhutilMetricsChannel.php
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PhutilMetricsChannel.php
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<?php
/**
* A @{class:PhutilChannelChannel} which wraps some other channel and provides
* metrics about its use (e.g., bytes read and bytes written).
*
* @task metrics Channel Metrics
* @task impl Implementation
*/
final class PhutilMetricsChannel extends PhutilChannelChannel {
private $bytesRead = 0;
private $bytesWritten = 0;
private $startTime;
/* -( Channel Metrics )---------------------------------------------------- */
/**
* Get the number of bytes that have been written to the channel. This
* includes any bytes which have been buffered but not actually transmitted,
* and thus may overreport compared to actual activity on the wire.
*
* @return int Bytes written.
* @task metrics
*/
public function getBytesWritten() {
return $this->bytesWritten;
}
/**
* Get the number of bytes that have been read from the channel. This excludes
* any bytes which have been received but not actually read by anything, and
* thus may underreport compared to actual activity on the wire.
*
* @return int Bytes read.
* @task metrics
*/
public function getBytesRead() {
return $this->bytesRead;
}
/**
* Get the elapsed wall time since this channel opened.
*
* @return float Wall time, in seconds.
* @task metrics
*/
public function getWallTime() {
return microtime(true) - $this->startTime;
}
/* -( Implementation )----------------------------------------------------- */
/**
* @task impl
*/
protected function didConstruct() {
$this->startTime = microtime(true);
}
/**
* @task impl
*/
public function read() {
$buffer = parent::read();
$this->bytesRead += strlen($buffer);
return $buffer;
}
/**
* @task impl
*/
public function write($message) {
$this->bytesWritten += strlen($message);
return parent::write($message);
}
}

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Content licensed under Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA) unless otherwise noted; code licensed under Apache 2.0 or other open source licenses. · CC BY-SA 4.0 · Apache 2.0