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Diffstat (limited to '')
| -rw-r--r-- | library/Icingadb/Util/PerfData.php | 642 |
1 files changed, 642 insertions, 0 deletions
diff --git a/library/Icingadb/Util/PerfData.php b/library/Icingadb/Util/PerfData.php new file mode 100644 index 0000000..2d83c54 --- /dev/null +++ b/library/Icingadb/Util/PerfData.php @@ -0,0 +1,642 @@ +<?php + +/* Icinga DB Web | (c) 2021 Icinga GmbH | GPLv2 */ + +namespace Icinga\Module\Icingadb\Util; + +use Icinga\Module\Icingadb\Common\ServiceStates; +use Icinga\Web\Widget\Chart\InlinePie; +use InvalidArgumentException; +use LogicException; + +class PerfData +{ + const PERFDATA_OK = 'ok'; + const PERFDATA_WARNING = 'warning'; + const PERFDATA_CRITICAL = 'critical'; + + /** + * The performance data value being parsed + * + * @var string + */ + protected $perfdataValue; + + /** + * Unit of measurement (UOM) + * + * @var string + */ + protected $unit; + + /** + * The label + * + * @var string + */ + protected $label; + + /** + * The value + * + * @var float + */ + protected $value; + + /** + * The minimum value + * + * @var float + */ + protected $minValue; + + /** + * The maximum value + * + * @var float + */ + protected $maxValue; + + /** + * The WARNING threshold + * + * @var ThresholdRange + */ + protected $warningThreshold; + + /** + * The CRITICAL threshold + * + * @var ThresholdRange + */ + protected $criticalThreshold; + + /** + * Create a new PerfData object based on the given performance data label and value + * + * @param string $label The perfdata label + * @param string $value The perfdata value + */ + public function __construct(string $label, string $value) + { + $this->perfdataValue = $value; + $this->label = $label; + $this->parse(); + + if ($this->unit === '%') { + if ($this->minValue === null) { + $this->minValue = 0.0; + } + if ($this->maxValue === null) { + $this->maxValue = 100.0; + } + } + + $warn = $this->warningThreshold->getMax(); + if ($warn !== null) { + $crit = $this->criticalThreshold->getMax(); + if ($crit !== null && $warn > $crit) { + $this->warningThreshold->setInverted(); + $this->criticalThreshold->setInverted(); + } + } + } + + /** + * Return a new PerfData object based on the given performance data key=value pair + * + * @param string $perfdata The key=value pair to parse + * + * @return PerfData + * + * @throws InvalidArgumentException In case the given performance data has no content or a invalid format + */ + public static function fromString(string $perfdata): self + { + if (empty($perfdata)) { + throw new InvalidArgumentException('PerfData::fromString expects a string with content'); + } elseif (strpos($perfdata, '=') === false) { + throw new InvalidArgumentException( + 'PerfData::fromString expects a key=value formatted string. Got "' . $perfdata . '" instead' + ); + } + + list($label, $value) = explode('=', $perfdata, 2); + return new static(trim($label), trim($value)); + } + + /** + * Return whether this performance data's value is a number + * + * @return bool True in case it's a number, otherwise False + */ + public function isNumber(): bool + { + return $this->unit === null; + } + + /** + * Return whether this performance data's value are seconds + * + * @return bool True in case it's seconds, otherwise False + */ + public function isSeconds(): bool + { + return $this->unit === 's'; + } + + /** + * Return whether this performance data's value is a temperature + * + * @return bool True in case it's temperature, otherwise False + */ + public function isTemperature(): bool + { + return in_array($this->unit, array('C', 'F', 'K')); + } + + /** + * Return whether this performance data's value is in percentage + * + * @return bool True in case it's in percentage, otherwise False + */ + public function isPercentage(): bool + { + return $this->unit === '%'; + } + + /** + * Get whether this perf data's value is in packets + * + * @return bool True in case it's in packets + */ + public function isPackets(): bool + { + return $this->unit === 'packets'; + } + + /** + * Get whether this perf data's value is in lumen + * + * @return bool + */ + public function isLumens(): bool + { + return $this->unit === 'lm'; + } + + /** + * Get whether this perf data's value is in decibel-milliwatts + * + * @return bool + */ + public function isDecibelMilliWatts(): bool + { + return $this->unit === 'dBm'; + } + + /** + * Get whether this data's value is in bits + * + * @return bool + */ + public function isBits(): bool + { + return $this->unit === 'b'; + } + + /** + * Return whether this performance data's value is in bytes + * + * @return bool True in case it's in bytes, otherwise False + */ + public function isBytes(): bool + { + return $this->unit === 'B'; + } + + /** + * Get whether this data's value is in watt hours + * + * @return bool + */ + public function isWattHours(): bool + { + return $this->unit === 'Wh'; + } + + /** + * Get whether this data's value is in watt + * + * @return bool + */ + public function isWatts(): bool + { + return $this->unit === 'W'; + } + + /** + * Get whether this data's value is in ampere + * + * @return bool + */ + public function isAmperes(): bool + { + return $this->unit === 'A'; + } + + /** + * Get whether this data's value is in ampere seconds + * + * @return bool + */ + public function isAmpSeconds(): bool + { + return $this->unit === 'As'; + } + + /** + * Get whether this data's value is in volts + * + * @return bool + */ + public function isVolts(): bool + { + return $this->unit === 'V'; + } + + /** + * Get whether this data's value is in ohm + * + * @return bool + */ + public function isOhms(): bool + { + return $this->unit === 'O'; + } + + /** + * Get whether this data's value is in grams + * + * @return bool + */ + public function isGrams(): bool + { + return $this->unit === 'g'; + } + + /** + * Get whether this data's value is in Litters + * + * @return bool + */ + public function isLiters(): bool + { + return $this->unit === 'l'; + } + + /** + * Return whether this performance data's value is a counter + * + * @return bool True in case it's a counter, otherwise False + */ + public function isCounter(): bool + { + return $this->unit === 'c'; + } + + /** + * Returns whether it is possible to display a visual representation + * + * @return bool True when the perfdata is visualizable + */ + public function isVisualizable(): bool + { + return isset($this->minValue) && isset($this->maxValue) && isset($this->value); + } + + /** + * Return this perfomance data's label + */ + public function getLabel(): string + { + return $this->label; + } + + /** + * Return the value or null if it is unknown (U) + * + * @return null|float + */ + public function getValue() + { + return $this->value; + } + + /** + * Return the unit as a string + * + * @return ?string + */ + public function getUnit() + { + return $this->unit; + } + + /** + * Return the value as percentage (0-100) + * + * @return null|float + */ + public function getPercentage() + { + if ($this->isPercentage()) { + return $this->value; + } + + if ($this->maxValue !== null) { + $minValue = $this->minValue !== null ? $this->minValue : 0.0; + if ($this->maxValue == $minValue) { + return null; + } + + if ($this->value > $minValue) { + return (($this->value - $minValue) / ($this->maxValue - $minValue)) * 100; + } + } + } + + /** + * Return this performance data's warning treshold + * + * @return ThresholdRange + */ + public function getWarningThreshold(): ThresholdRange + { + return $this->warningThreshold; + } + + /** + * Return this performance data's critical treshold + * + * @return ThresholdRange + */ + public function getCriticalThreshold(): ThresholdRange + { + return $this->criticalThreshold; + } + + /** + * Return the minimum value or null if it is not available + * + * @return ?float + */ + public function getMinimumValue() + { + return $this->minValue; + } + + /** + * Return the maximum value or null if it is not available + * + * @return null|float + */ + public function getMaximumValue() + { + return $this->maxValue; + } + + /** + * Return this performance data as string + * + * @return string + */ + public function __toString() + { + return $this->formatLabel(); + } + + /** + * Parse the current performance data value + * + * @todo Handle optional min/max if UOM == % + */ + protected function parse() + { + $parts = explode(';', $this->perfdataValue); + + $matches = array(); + if (preg_match('@^(-?(?:\d+)?(?:\.\d+)?)([a-zA-Z%°]{1,3})$@u', $parts[0], $matches)) { + $this->unit = $matches[2]; + $this->value = $matches[1]; + } else { + $this->value = $parts[0]; + } + + switch (count($parts)) { + /* @noinspection PhpMissingBreakStatementInspection */ + case 5: + if ($parts[4] !== '') { + $this->maxValue = $parts[4]; + } + /* @noinspection PhpMissingBreakStatementInspection */ + case 4: + if ($parts[3] !== '') { + $this->minValue = $parts[3]; + } + /* @noinspection PhpMissingBreakStatementInspection */ + case 3: + $this->criticalThreshold = ThresholdRange::fromString(trim($parts[2])); + // Fallthrough + case 2: + $this->warningThreshold = ThresholdRange::fromString(trim($parts[1])); + } + + if ($this->warningThreshold === null) { + $this->warningThreshold = new ThresholdRange(); + } + if ($this->criticalThreshold === null) { + $this->criticalThreshold = new ThresholdRange(); + } + } + + protected function calculatePieChartData(): array + { + $rawValue = $this->getValue(); + $minValue = $this->getMinimumValue() !== null ? $this->getMinimumValue() : 0; + $usedValue = ($rawValue - $minValue); + + $green = $orange = $red = 0; + + if ($this->criticalThreshold->contains($rawValue)) { + if ($this->warningThreshold->contains($rawValue)) { + $green = $usedValue; + } else { + $orange = $usedValue; + } + } else { + $red = $usedValue; + } + + return array($green, $orange, $red, ($this->getMaximumValue() - $minValue) - $usedValue); + } + + + public function asInlinePie(): InlinePie + { + if (! $this->isVisualizable()) { + throw new LogicException('Cannot calculate piechart data for unvisualizable perfdata entry.'); + } + + $data = $this->calculatePieChartData(); + $pieChart = new InlinePie($data, $this); + $pieChart->setColors(array('#44bb77', '#ffaa44', '#ff5566', '#ddccdd')); + + return $pieChart; + } + + /** + * Format the given value depending on the currently used unit + */ + protected function format($value) + { + if ($value === null) { + return null; + } + + if ($value instanceof ThresholdRange) { + if ($value->getMin()) { + return (string) $value; + } + + $max = $value->getMax(); + return $max === null ? '' : $this->format($max); + } + + switch (true) { + case $this->isPercentage(): + return (string) $value . '%'; + case $this->isPackets(): + return (string) $value . 'packets'; + case $this->isLumens(): + return (string) $value . 'lm'; + case $this->isDecibelMilliWatts(): + return (string) $value . 'dBm'; + case $this->isCounter(): + return (string) $value . 'c'; + case $this->isTemperature(): + return (string) $value . $this->unit; + case $this->isBits(): + return PerfDataFormat::bits($value); + case $this->isBytes(): + return PerfDataFormat::bytes($value); + case $this->isSeconds(): + return PerfDataFormat::seconds($value); + case $this->isWatts(): + return PerfDataFormat::watts($value); + case $this->isWattHours(): + return PerfDataFormat::wattHours($value); + case $this->isAmperes(): + return PerfDataFormat::amperes($value); + case $this->isAmpSeconds(): + return PerfDataFormat::ampereSeconds($value); + case $this->isVolts(): + return PerfDataFormat::volts($value); + case $this->isOhms(): + return PerfDataFormat::ohms($value); + case $this->isGrams(): + return PerfDataFormat::grams($value); + case $this->isLiters(): + return PerfDataFormat::liters($value); + case ! is_numeric($value): + return $value; + default: + return number_format($value, 2) . ($this->unit !== null ? ' ' . $this->unit : ''); + } + } + + /** + * Format the title string that represents this perfdata set + * + * @param bool $html + * + * @return string + */ + public function formatLabel(bool $html = false): string + { + return sprintf( + $html ? '<b>%s %s</b> (%s%%)' : '%s %s (%s%%)', + htmlspecialchars($this->getLabel()), + $this->format($this->value), + number_format($this->getPercentage() ?? 0, 2) + ); + } + + public function toArray(): array + { + return array( + 'label' => $this->getLabel(), + 'value' => $this->format($this->getvalue()), + 'min' => isset($this->minValue) && !$this->isPercentage() + ? $this->format($this->minValue) + : '', + 'max' => isset($this->maxValue) && !$this->isPercentage() + ? $this->format($this->maxValue) + : '', + 'warn' => $this->format($this->warningThreshold), + 'crit' => $this->format($this->criticalThreshold) + ); + } + + /** + * Return the state indicated by this perfdata + * + * @return int + */ + public function getState(): int + { + if (! is_numeric($this->value)) { + return ServiceStates::UNKNOWN; + } + + if (! $this->criticalThreshold->contains($this->value)) { + return ServiceStates::CRITICAL; + } + + if (! $this->warningThreshold->contains($this->value)) { + return ServiceStates::WARNING; + } + + return ServiceStates::OK; + } + + /** + * Return whether the state indicated by this perfdata is worse than + * the state indicated by the other perfdata + * CRITICAL > UNKNOWN > WARNING > OK + * + * @param PerfData $rhs the other perfdata + * + * @return bool + */ + public function worseThan(PerfData $rhs): bool + { + if (($state = $this->getState()) === ($rhsState = $rhs->getState())) { + return $this->getPercentage() > $rhs->getPercentage(); + } + + if ($state === ServiceStates::CRITICAL) { + return true; + } + + if ($state === ServiceStates::UNKNOWN) { + return $rhsState !== ServiceStates::CRITICAL; + } + + if ($state === ServiceStates::WARNING) { + return $rhsState === ServiceStates::OK; + } + + return false; + } +} |