webGui: new watchdog service with websockets instead of ajax polling

plugins/dynamix/scripts/watchdog

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+PREV=
+while :; do
+  . /var/local/emhttp/var.ini
+  case $fsState in
+  Stopped)
+    DATA="<span class='red strong'>Array Stopped</span>"
+  ;;
+  Starting)
+    DATA="<span class='orange strong'>Array Starting</span>"
+  ;;
+  *)
+    DATA="<span class='green strong'>Array Started</span>"
+  ;;
+  esac
+  if [[ $mdResync -gt 0 ]]; then
+    MODE=
+    if [[ $mdResyncAction =~ recon ]]; then
+      MODE='Parity-Sync / Data-Rebuild'
+    elif [[ $mdResyncAction =~ clear ]]; then
+      MODE='Clearing'
+    elif [[ $mdResyncAction == check ]]; then
+      MODE='Read-Check'
+    elif [[ $mdResyncAction =~ check ]]; then
+      MODE='Parity-Check'
+    fi
+    p=$((mdResyncPos*1000/mdResync)); w=${p:0:-1}
+    DATA="$DATA&bullet;<span class='orange strong'>$MODE ${w:-0}.${p: -1} %</span>"
+  fi
+  if [[ $DATA != $PREV ]]; then
+    curl -s -X POST -d "$DATA" http://127.0.0.1/pub/watchdog?buffer_length=1 &>/dev/null
+    PREV=$DATA
+  fi
+  sleep 3
+done &