Differential D20980 Diff 49996 src/channel/PhutilMetricsChannel.php

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src/channel/PhutilMetricsChannel.php

This file was added.

				<?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);
				}

				}