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Parser.php
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Parser.php
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<?php
/**
* Parser
*
* @author Joshua P. Mervine <[email protected]>
* @version 1.0.0
*
* Parser class for httperf raw output.
*/
/**
* Parser class.
*/
class Parser {
/**
* Parse method
*
* @param string||string[] $raw String or array containing raw output from httperf.
*
* @return mixed[] Returns array containing parsed results from httperf output.
*/
public static function parse($raw) {
if (is_string($raw)) $raw = explode("\n", $raw);
$verbose = false;
$matches = array();
$verbose_connection_times = array();
foreach ($raw as $line) {
if (empty($line)) continue;
/* verbose connection timing */
preg_match(self::verboseExpression(), $line, $match);
if (isset($match[1])) {
array_push($verbose_connection_times, $match[1]);
continue;
}
/* output parsing */
foreach (self::expressions() as $key => $expression) {
if (!isset($matches[$key])) {
preg_match($expression, $line, $match);
if (isset($match[1])) $matches[$key] = $match[1];
}
}
}
if (!empty($verbose_connection_times)) {
$verbose = true;
foreach (self::percentiles() as $percentile) {
$matches["connection_time_".$percentile."_pct"] = self::calculatePercentiles($percentile, $verbose_connection_times);
}
$matches["connection_times"] = $verbose_connection_times;
}
return $matches;
}
/**
* @return string Returns string with 'Connection lifetime' matcher RegExp
*/
private static function verboseExpression() {
return "/^Connection lifetime = ([0-9]+\.[0-9]+)(\s?)/";
}
/**
* @return string[] Returns array of strings with needed matcher RegExp for parsing
* raw httperf output.
*/
private static function expressions() {
return array(
"command" => "/^(httperf .+)$/",
/* Maximum connect burst length */
"max_connect_burst_length" => "/Maximum connect burst length: ([0-9]*?\.?[0-9]+)$/",
/* Total */
"total_connections" => "/^Total: connections ([0-9]*?\.?[0-9]+) /",
"total_requests" => "/^Total: connections .+ requests ([0-9]*?\.?[0-9]+) /",
"total_replies" => "/^Total: connections .+ replies ([0-9]*?\.?[0-9]+) /",
"total_test_duration" => "/^Total: connections .+ test-duration ([0-9]*?\.?[0-9]+) /",
/* Connection rate */
"connection_rate_per_sec" => "/^Connection rate: ([0-9]*?\.?[0-9]+) /",
"connection_rate_ms_conn" => "/^Connection rate: .+ \(([0-9]*?\.?[0-9]+) ms/",
/* Connection time [ms] */
"connection_time_min" => "/^Connection time \[ms\]: min ([0-9]*?\.?[0-9]+) /",
"connection_time_avg" => "/^Connection time \[ms\]: min .+ avg ([0-9]*?\.?[0-9]+) /",
"connection_time_max" => "/^Connection time \[ms\]: min .+ max ([0-9]*?\.?[0-9]+) /",
"connection_time_median" => "/^Connection time \[ms\]: min .+ median ([0-9]*?\.?[0-9]+) /",
"connection_time_stddev" => "/^Connection time \[ms\]: min .+ stddev ([0-9]*?\.?[0-9]+)$/",
"connection_time_connect" => "/^Connection time \[ms\]: connect ([0-9]*?\.?[0-9]+)$/",
/* Connection length [replies/conn] */
"connection_length" => "/^Connection length \[replies\/conn\]: ([0-9]*?\.?[0-9]+)$/",
/* Request rate */
"request_rate_per_sec" => "/^Request rate: ([0-9]*?\.?[0-9]+) req/",
"request_rate_ms_request" => "/^Request rate: .+ \(([0-9]*?\.?[0-9]+) ms/",
/* Request size [B] */
"request_size" => "/^Request size \[B\]: ([0-9]*?\.?[0-9]+)$/",
/* Reply rate [replies/s] */
"reply_rate_min" => "/^Reply rate \[replies\/s\]: min ([0-9]*?\.?[0-9]+) /",
"reply_rate_avg" => "/^Reply rate \[replies\/s\]: min .+ avg ([0-9]*?\.?[0-9]+) /",
"reply_rate_max" => "/^Reply rate \[replies\/s\]: min .+ max ([0-9]*?\.?[0-9]+) /",
"reply_rate_stddev" => "/^Reply rate \[replies\/s\]: min .+ stddev ([0-9]*?\.?[0-9]+) /",
"reply_rate_samples" => "/^Reply rate \[replies\/s\]: min .+ \(([0-9]*?\.?[0-9]+) samples/",
/* Reply time [ms] */
"reply_time_response" => "/^Reply time \[ms\]: response ([0-9]*?\.?[0-9]+) /",
"reply_time_transfer" => "/^Reply time \[ms\]: response .+ transfer ([0-9]*?\.?[0-9]+)$/",
/* Reply size [B] */
"reply_size_header" => "/^Reply size \[B\]: header ([0-9]*?\.?[0-9]+) /",
"reply_size_content" => "/^Reply size \[B\]: header .+ content ([0-9]*?\.?[0-9]+) /",
"reply_size_footer" => "/^Reply size \[B\]: header .+ footer ([0-9]*?\.?[0-9]+) /",
"reply_size_total" => "/^Reply size \[B\]: header .+ \(total ([0-9]*?\.?[0-9]+)\)/",
/* Reply status */
"reply_status_1xx" => "/^Reply status: 1xx=([0-9]*?\.?[0-9]+) /",
"reply_status_2xx" => "/^Reply status: .+ 2xx=([0-9]*?\.?[0-9]+) /",
"reply_status_3xx" => "/^Reply status: .+ 3xx=([0-9]*?\.?[0-9]+) /",
"reply_status_4xx" => "/^Reply status: .+ 4xx=([0-9]*?\.?[0-9]+) /",
"reply_status_5xx" => "/^Reply status: .+ 5xx=([0-9]*?\.?[0-9]+)/",
/* CPU time [s] */
"cpu_time_user_sec" => "/^CPU time \[s\]: user ([0-9]*?\.?[0-9]+) /",
"cpu_time_system_sec" => "/^CPU time \[s\]: user .+ system ([0-9]*?\.?[0-9]+) /",
"cpu_time_user_pct" => "/^CPU time \[s\]: user .+ \(user ([0-9]*?\.?[0-9]+)\% /",
"cpu_time_system_pct" => "/^CPU time \[s\]: user .+ system .+ system ([0-9]*?\.?[0-9]+)\% /",
"cpu_time_total_pct" => "/^CPU time \[s\]: user .+ total ([0-9]*?\.?[0-9]+)\%/",
/* Net I/O */
"net_io_kb_sec" => "/^Net I\/O: ([0-9]*?\.?[0-9]+) KB/",
"net_io_bps" => "/^Net I\/O: .+ \((.+) bps\)/",
/* Errors */
"errors_total" => "/^Errors: total ([0-9]*?\.?[0-9]+) /",
"errors_client_timeout" => "/^Errors: total .+ client-timo ([0-9]*?\.?[0-9]+) /",
"errors_socket_timeout" => "/^Errors: total .+ socket-timo ([0-9]*?\.?[0-9]+) /",
"errors_conn_refused" => "/^Errors: total .+ connrefused ([0-9]*?\.?[0-9]+) /",
"errors_conn_reset" => "/^Errors: total .+ connreset ([0-9]*?\.?[0-9]+)/",
"errors_fd_unavail" => "/^Errors: fd-unavail ([0-9]*?\.?[0-9]+) /",
"errors_addr_unavail" => "/^Errors: fd-unavail .+ addrunavail ([0-9]*?\.?[0-9]+) /",
"errors_ftab_full" => "/^Errors: fd-unavail .+ ftab-full ([0-9]*?\.?[0-9]+) /",
"errors_other" => "/^Errors: fd-unavail .+ other ([0-9]*?\.?[0-9]+)/"
);
}
/**
* @return int[] Returns array of ints to be used in generating percentiles.
*/
private static function percentiles() {
return array(75, 80, 85, 90, 95, 99);
}
/**
* @param int $percentile The percentile to calculate.
* @param int[] $value The array of connection times to be used in the
* percentile calculation.
*
* @return int Returns int of the percentile calculation.
*/
private static function calculatePercentiles($percentile, $values) {
$len = count($values);
if ($len === 1) return reset($values);
if ($len === 2) return end($values);
sort($values);
return $values[round(($len / 100) * $percentile) - 1];
}
}