init

check_heating.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+IMAGE_URL="http://webcam.intern.yannikenss.de/image.jpg"
+TRESHOLD=0.009
+
+while getopts ":i:c:" opt; do
+  case $opt in
+    i)
+      IMAGE_URL="$OPTARG"
+      ;;
+    c)
+      TRESHOLD="$OPTARG"
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG"
+      ;;
+  esac
+done
+
+OUTPUT="UNKNOWN: Script failed"
+EXIT_CODE=3
+
+error_file=$(mktemp)
+
+for i in {1..3}
+do
+    value=$(convert <(curl -s "$IMAGE_URL" 2>> $error_file ) -colorspace Gray -format "%[fx:image.mean]" info: 2>> $error_file)
+    is_dark=$(echo "$value < $TRESHOLD" | bc -l 2>> $error_file)
+    
+    if [ $is_dark -eq 0 ]
+    then
+        OUTPUT="OK: Image bright"
+        EXIT_CODE=0
+    else
+        OUTPUT="CRITICAL: Image dark"
+        EXIT_CODE=2
+        VALUE="|Brightness=$value"
+        
+        echo "$OUTPUT" "$VALUE"
+        cat $error_file
+        rm $error_file
+        exit $EXIT_CODE
+    fi
+    sleep 0.5
+done
+VALUE="|Brightness=$value"
+
+echo "$OUTPUT" "$VALUE"
+cat $error_file
+rm $error_file
+exit $EXIT_CODE