Improve local development (#3661)

scripts/auto/autostop-daemon.sh

@@ -0,0 +1,87 @@
+#!/bin/bash
+
+# needed for the clients connected function residing in autopause
+. "$(dirname "$0")/autopause-fcns.sh"
+
+# shellcheck source=../../scripts/start-utils
+. "$(dirname "$0")/../start-utils"
+if isTrue "${DEBUG_AUTOSTOP}"; then
+  set -x
+fi
+
+# wait for java process to be started
+while :
+do
+  if java_process_exists ; then
+    break
+  fi
+  sleep 0.1
+done
+
+STATE=INIT
+
+while :
+do
+  isTrue "${DEBUG_AUTOSTOP}" && log "DEBUG: autostop state = $STATE"
+  case X$STATE in
+  XINIT)
+    # Server startup
+    if mc_server_listening ; then
+      TIME_THRESH=$(($(current_uptime)+AUTOSTOP_TIMEOUT_INIT))
+
+      if [ -e /data/.skip-stop ] ; then
+        logAutostop "'/data/.skip-stop' file is present - skipping stopping"
+      else
+        logAutostop "MC Server listening for connections - stopping in $AUTOSTOP_TIMEOUT_INIT seconds"
+      fi
+
+      STATE=II
+    fi
+    ;;
+  XII)
+    # Initial idle
+    if java_clients_connected ; then
+      logAutostop "Client connected - waiting for disconnect"
+      STATE=E
+    elif [ -e /data/.skip-stop ] ; then
+      logAutostop "'/data/.skip-stop' file is present - skipping stopping"
+      STATE=E
+    else
+      if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
+        logAutostop "No client connected since startup - stopping server"
+        /auto/stop.sh
+        exit 0
+      fi
+    fi
+    ;;
+  XE)
+    # Established
+    if ! java_clients_connected ; then
+      TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_EST))
+      logAutostop "All clients disconnected - stopping in $AUTOSTOP_TIMEOUT_EST seconds"
+      STATE=I
+    fi
+    ;;
+  XI)
+    # Idle
+    if java_clients_connected ; then
+      logAutostop "Client reconnected - waiting for disconnect"
+      STATE=E
+    elif [ -e /data/.skip-stop ] ; then
+      TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_EST))
+      logAutostop "'/data/.skip-stop' file is present - skipping stopping"
+      STATE=E
+    else
+      if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
+        logAutostop "No client reconnected - stopping"
+        /auto/stop.sh
+        exit 0
+      fi
+    fi
+    ;;
+  *)
+    logAutostop "Error: invalid state: $STATE"
+    ;;
+  esac
+  sleep $AUTOSTOP_PERIOD
+done