1 files changed, 28 insertions, 0 deletions
diff --git a/mod/src/main/java/moe/ymc/acron/MinecraftServerHolder.java b/mod/src/main/java/moe/ymc/acron/MinecraftServerHolder.java
new file mode 100644
index 0000000..f522884
--- /dev/null
+++ b/mod/src/main/java/moe/ymc/acron/MinecraftServerHolder.java
@@ -0,0 +1,28 @@
+package moe.ymc.acron;
+
+import net.minecraft.server.dedicated.MinecraftDedicatedServer;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.jetbrains.annotations.NotNull;
+
+public class MinecraftServerHolder {
+    private static final Logger LOGGER = LogManager.getLogger();
+    public static MinecraftDedicatedServer server;
+
+    public static void setServer(@NotNull MinecraftDedicatedServer server) {
+        if (MinecraftServerHolder.server != null) {
+            throw new IllegalStateException();
+        }
+        LOGGER.debug("Got MinecraftDedicatedServer on thread {}.",
+                Thread.currentThread().getName());
+        MinecraftServerHolder.server = server;
+    }
+
+    public static @NotNull MinecraftDedicatedServer getServer() {
+        if (server == null) {
+            throw new IllegalStateException(String.format("[%s] getServer() called before a server is ready.",
+                    Thread.currentThread().getName()));
+        }
+        return server;
+    }
+}