Implement drains and small fixes

beacon/src/main/java/io/xpipe/beacon/exchange/cli/ReadDrainExchange.java

@@ -0,0 +1,30 @@
+package io.xpipe.beacon.exchange.cli;
+
+import io.xpipe.beacon.RequestMessage;
+import io.xpipe.beacon.ResponseMessage;
+import io.xpipe.beacon.exchange.MessageExchange;
+import lombok.Builder;
+import lombok.NonNull;
+import lombok.Value;
+import lombok.extern.jackson.Jacksonized;
+
+public class ReadDrainExchange implements MessageExchange {
+
+    @Override
+    public String getId() {
+        return "readDrain";
+    }
+
+    @Jacksonized
+    @Builder
+    @Value
+    public static class Request implements RequestMessage {
+        @NonNull
+        String name;
+    }
+
+    @Jacksonized
+    @Builder
+    @Value
+    public static class Response implements ResponseMessage {}
+}

beacon/src/main/java/module-info.java

@@ -41,6 +41,7 @@ module io.xpipe.beacon {
             RenameStoreExchange,
             RemoveStoreExchange,
             StoreAddExchange,
+            ReadDrainExchange,
             WritePreparationExchange,
             WriteExecuteExchange,
             SelectExchange,