From 5df6eeaeafc1d26af33077041a94129893f90618 Mon Sep 17 00:00:00 2001
From: "Alexander A. Klimov" <alexander.klimov@netways.de>
Date: Tue, 26 Apr 2016 16:26:06 +0200
Subject: [PATCH] Implement ThresholdRange
refs #8194
---
.../Monitoring/Plugin/ThresholdRange.php | 167 ++++++++++++++++++
1 file changed, 167 insertions(+)
create mode 100644 modules/monitoring/library/Monitoring/Plugin/ThresholdRange.php
diff --git a/modules/monitoring/library/Monitoring/Plugin/ThresholdRange.php b/modules/monitoring/library/Monitoring/Plugin/ThresholdRange.php
new file mode 100644
index 000000000..9f5040937
--- /dev/null
+++ b/modules/monitoring/library/Monitoring/Plugin/ThresholdRange.php
@@ -0,0 +1,167 @@
+<?php
+/* Icinga Web 2 | (c) 2016 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Monitoring\Plugin;
+
+/**
+ * The warning/critical threshold of a measured value
+ */
+class ThresholdRange
+{
+ /**
+ * The least value inside the range (null stands for -∞)
+ *
+ * @var float|null
+ */
+ protected $min;
+
+ /**
+ * The greatest value inside the range (null stands for ∞)
+ *
+ * @var float|null
+ */
+ protected $max;
+
+ /**
+ * Whether to invert the result of contains()
+ *
+ * @var bool
+ */
+ protected $inverted = false;
+
+ /**
+ * Create a new instance based on a threshold range conforming to <https://nagios-plugins.org/doc/guidelines.html>
+ *
+ * @param string $rawRange
+ *
+ * @return ThresholdRange
+ */
+ public static function fromString($rawRange)
+ {
+ $range = new static();
+
+ if (strpos($rawRange, '@') === 0) {
+ $range->setInverted(true);
+ $rawRange = substr($rawRange, 1);
+ }
+
+ if (strpos($rawRange, ':') === false) {
+ $min = 0.0;
+ $max = floatval($rawRange);
+ } else {
+ list($min, $max) = explode(':', $rawRange, 2);
+
+ switch ($min) {
+ case '':
+ $min = 0.0;
+ break;
+ case '~':
+ $min = null;
+ break;
+ default:
+ $min = floatval($min);
+ }
+
+ $max = empty($max) ? null : floatval($max);
+ }
+
+ return $range->setMin($min)
+ ->setMax($max);
+ }
+
+ /**
+ * Set the least value inside the range (null stands for -∞)
+ *
+ * @param float|null $min
+ *
+ * @return $this
+ */
+ public function setMin($min)
+ {
+ $this->min = $min;
+ return $this;
+ }
+
+ /**
+ * Get the least value inside the range (null stands for -∞)
+ *
+ * @return float|null
+ */
+ public function getMin()
+ {
+ return $this->min;
+ }
+
+ /**
+ * Set the greatest value inside the range (null stands for ∞)
+ *
+ * @param float|null $max
+ *
+ * @return $this
+ */
+ public function setMax($max)
+ {
+ $this->max = $max;
+ return $this;
+ }
+
+ /**
+ * Get the greatest value inside the range (null stands for ∞)
+ *
+ * @return float|null
+ */
+ public function getMax()
+ {
+ return $this->max;
+ }
+
+ /**
+ * Set whether to invert the result of contains()
+ *
+ * @param bool $inverted
+ *
+ * @return $this
+ */
+ public function setInverted($inverted)
+ {
+ $this->inverted = $inverted;
+ return $this;
+ }
+
+ /**
+ * Get whether to invert the result of contains()
+ *
+ * @return bool
+ */
+ public function isInverted()
+ {
+ return $this->inverted;
+ }
+
+ /**
+ * @param float $value
+ *
+ * @return bool Whether $value is inside $this
+ */
+ public function contains($value)
+ {
+ return (bool) ($this->inverted ^ (
+ ($this->min === null || $this->min <= $value) && ($this->max === null || $this->max >= $value)
+ ));
+ }
+
+ /**
+ * @return string The textual representation of $this, suitable for fromString()
+ */
+ public function __toString()
+ {
+ if ($this->min === null) {
+ $res = '~:';
+ } else {
+ $res = $this->min === 0.0 ? '' : $this->min . ':';
+ }
+ $res .= $this->max === null ? '' : $this->max;
+
+ return ($this->inverted ? '@' : '') . (empty($res) ? '0:' : $res);
+ }
+}