Refactor check-dummy.sh to add options for warning, critical and unknown status

This commit refactors the check-dummy.sh script to include options for warning, critical and unknown status. The script now accepts the following command line arguments: --ok (default), --warning, --critical and --unknown. The exit codes have also been updated to reflect these new statuses.

check-dummy.sh

@@ -3,13 +3,22 @@
 #
 #/
 #/ Usage:
-#/ check-dummy.sh 
+#/ check-dummy.sh [--ok|--warning|--critical]
 #/
-#/ Does not check anything. Always gives OK!
+#/ Does not check anything.
+#/
+#/ Options:
+#/  -o, --ok           Trigger a OK status (default)
+#/  -w, --warning      Trigger a warning
+#/  -c, --critical     Trigger a critical warning
+#/  -u, --unknown      Trigger a unknown status
 #/ 
 #/ 
 #/ Exit Codes:
 #/  0 Everything OK
+#/  1 Warning level exceeded
+#/  2 Critical level exceeded
+#/  3 Unknown status
 #/
 
 Usage() {
@@ -18,8 +27,8 @@ Usage() {
 
 GetOptions() {
     # https://stackoverflow.com/a/29754866
-    OPTIONS=''
-    LONGOPTS=''
+    OPTIONS='owcu'
+    LONGOPTS='ok,warning,critical,unknown'
 
     # -use ! and PIPESTATUS to get exit code with errexit set
     # -temporarily store output to be able to check for errors
@@ -30,7 +39,6 @@ GetOptions() {
         # e.g. return value is 1
         #  then getopt has complained about wrong arguments to stdout
         Usage
-        exit 2
     fi
 
     # read getopt's output this way to handle the quoting right:
@@ -39,23 +47,42 @@ GetOptions() {
     # now enjoy the options in order and nicely split until we see --
     while true; do
         case "$1" in
+            -o|--ok)
+                rval=0
+                rmsg="OK"
+                shift
+                ;;
+            -w|--warning)
+                rval=1
+                rmsg="WARNING"
+                shift
+                ;;
+            -c|--critical)
+                rval=2
+                rmsg="CRITICAL"
+                shift
+                ;;
+            -u|--unknown)
+                rval=3
+                rmsg="UNKNOWN"
+                shift
+                ;;
             --)
                 shift
                 break
                 ;;
             *)
-                echo "URL UNKNOWN - ${1} is not a valid parameter"
+                echo "DUMMY UNKNOWN - ${1} is not a valid parameter"
                 exit 3
                 ;;
         esac
     done
-
-    if [ -z ${1+x} ]; then 
-        echo "URL UNKNOWN - url not given"
-        exit 3
-    else 
-        url=${1}
-    fi
 }
-echo "DUMMY OK"
-exit 0
+script_name=$(basename "${0}")
+script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+rval=0
+rmsg="OK"
+GetOptions "$@"
+
+echo "DUMMY $rmsg"
+exit $rval