20: Add new JupiterPerpsEntryPriceVariableRefreshWatcher class

src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsEntryPriceVariableRefreshWatcher.tjava

@@ -0,0 +1,28 @@
+package com.r35157.jupiterperpsalarm.impl.ref;
+
+import java.nio.file.Path;
+import java.util.Objects;
+
+public final class JupiterPerpsEntryPriceVariableRefreshWatcher {
+
+    public JupiterPerpsEntryPriceVariableRefreshWatcher(
+            Path confDirectory,
+            JupiterPerpsEntryPriceVariableRefresher refresher
+    ) {
+        this.confDirectory = Objects.requireNonNull(confDirectory, "confDirectory");
+        this.refresher = Objects.requireNonNull(refresher, "refresher");
+    }
+
+    public void start() {
+        System.out.println(
+                "Jupiter Perps entry price variable refresh watcher configured for directory: "
+                        + confDirectory
+        );
+    }
+
+    private static final String REFRESH_TRIGGER_FILE_NAME =
+            "jupiter-perps-alarm-var.refresh";
+
+    private final Path confDirectory;
+    private final JupiterPerpsEntryPriceVariableRefresher refresher;
+}