Add support for Airplane servers (#826)

README.md

@@ -317,9 +317,19 @@ A [Tuinity](https://github.com/Spottedleaf/Tuinity) server, which is a fork of P
 
 > **NOTE** only `VERSION=LATEST` is supported
 
+## Running an Airplane server
+
+An [Airplane](https://github.com/TECHNOVE/Airplane) server, which is a fork of Tuinity aimed at further improving server performance at high playercounts.
+
+    -e TYPE=AIRPLANE
+
+> **NOTE** only `VERSION=LATEST` is supported
+
+> **NOTE** only Java 8 and 11 are supported
+
 ## Running a Purpur server
 
-A [Purpur](https://purpur.pl3x.net/) server, which is "a fork of Paper and Tuinity with the goal of providing new and interesting configuration options".
+A [Purpur](https://purpur.pl3x.net/) server, which is "a fork of Paper, Tuinity, Airplane with the goal of providing new and interesting configuration options".
 
     -e TYPE=PURPUR
 

start-configuration

@@ -163,12 +163,16 @@ case "${TYPE^^}" in
   YATOPIA)
     exec ${SCRIPTS:-/}start-deployYatopia "$@"
   ;;
+  
+   AIRPLANE)
+    exec ${SCRIPTS:-/}start-deployAirplane "$@"
+  ;;
 
   *)
       log "Invalid type: '$TYPE'"
       log "Must be: VANILLA, FORGE, BUKKIT, SPIGOT, PAPER, FTBA (multiarch-only),"
       log "         CURSE_INSTANCE, CURSEFORGE, SPONGEVANILLA, TUINITY, PURPUR"
-      log "         CUSTOM, MAGMA, MOHIST, CATSERVER, YATOPIA"
+      log "         CUSTOM, MAGMA, MOHIST, CATSERVER, YATOPIA, AIRPLANE"
       exit 1
   ;;
 

start-deployAirplane

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+. ${SCRIPTS:-/}start-utils
+isDebugging && set -x
+
+JAVA_VER=$(java -version 2>&1 | head -1 | cut -d'"' -f2 | sed '/^1\./s///' | cut -d'.' -f1)
+
+if [ "${JAVA_VER}" != "8" ] && [ "${JAVA_VER}" != "11" ]; then
+  log "ERROR: Airplane server type only supports Java versions 8 and 11"
+  exit 1
+fi
+
+if [ "${VERSION}" != "LATEST" ]; then
+  log "ERROR: Airplane server type only supports VERSION=LATEST"
+  exit 1
+fi
+
+export SERVER=airplane-${VANILLA_VERSION}-jdk${JAVA_VER}.jar
+
+if [ ! -f "$SERVER" ] || [ -n "$FORCE_REDOWNLOAD" ]; then
+    downloadUrl="https://dl.airplane.gg/latest/Airplane-JDK${JAVA_VER}/launcher-airplane.jar"
+    log "Downloading Airplane from $downloadUrl ..."
+    curl -fsSL -o "$SERVER" "$downloadUrl"
+    if [ ! -f "$SERVER" ]; then
+      log "ERROR: failed to download from $downloadUrl (status=$?)"
+      exit 3
+    fi
+fi
+
+# Normalize on Spigot for later operations
+export TYPE=SPIGOT
+export SKIP_LOG4J_CONFIG=true
+
+# Continue to Final Setup
+exec ${SCRIPTS:-/}start-finalSetupWorld $@