Autostop feature (#1212)

scripts/start-autostop

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# shellcheck source=start-utils
+. "${SCRIPTS:-/}start-utils"
+
+: "${SERVER_PORT:=25565}"
+export SERVER_PORT
+
+log "Autostop functionality enabled"
+
+isDebugging && set -x
+
+if ! [[ $AUTOSTOP_PERIOD =~ ^[0-9]+$ ]]; then
+  AUTOSTOP_PERIOD=10
+  export AUTOSTOP_PERIOD
+  log "Warning: AUTOSTOP_PERIOD is not numeric, set to 10 (seconds)"
+fi
+if [ "$AUTOSTOP_PERIOD" -eq "0" ] ; then
+  AUTOSTOP_PERIOD=10
+  export AUTOSTOP_PERIOD
+  log "Warning: AUTOSTOP_PERIOD must not be 0, set to 10 (seconds)"
+fi
+if ! [[ $AUTOSTOP_TIMEOUT_EST =~ ^[0-9]+$ ]] ; then
+  AUTOSTOP_TIMEOUT_EST=3600
+  export AUTOSTOP_TIMEOUT_EST
+  log "Warning: AUTOSTOP_TIMEOUT_EST is not numeric, set to 3600 (seconds)"
+fi
+if ! [[ $AUTOSTOP_TIMEOUT_INIT =~ ^[0-9]+$ ]] ; then
+  AUTOSTOP_TIMEOUT_INIT=1800
+  export AUTOSTOP_TIMEOUT_INIT
+  log "Warning: AUTOSTOP_TIMEOUT_INIT is not numeric, set to 1800 (seconds)"
+fi
+
+/autostop/autostop-daemon.sh &

scripts/start-configuration

@@ -37,6 +37,11 @@ if isTrue "${ENABLE_AUTOPAUSE}" && isTrue "${EXEC_DIRECTLY:-false}"; then
     exit 1
 fi
 
+if isTrue "${ENABLE_AUTOPAUSE}" && isTrue "${ENABLE_AUTOSTOP}"; then
+    log "ENABLE_AUTOPAUSE=true is incompatible with ENABLE_AUTOSTOP=true"
+    exit 1
+fi
+
 if [[ $PROXY ]]; then
     export http_proxy="$PROXY"
     export https_proxy="$PROXY"
@@ -96,6 +101,10 @@ if isTrue "${ENABLE_AUTOPAUSE}"; then
   ${SCRIPTS:-/}start-autopause
 fi
 
+if isTrue "${ENABLE_AUTOSTOP}"; then
+  ${SCRIPTS:-/}start-autostop
+fi
+
 if versionLessThan 1.7; then
   echo "
 MC_HEALTH_EXTRA_ARGS=(

scripts/start-utils

@@ -93,6 +93,14 @@ function logAutopauseAction() {
   echo "[$(date -Iseconds)] [Autopause] $*"
 }
 
+function logAutostop() {
+  echo "[Autostop loop] $*"
+}
+
+function logAutostopAction() {
+  echo "[$(date -Iseconds)] [Autostop] $*"
+}
+
 function normalizeMemSize() {
   local scale=1
   case ${1,,} in