refactor: remove legacy session store enum

modules/core/session-core/src/main/java/com/lingniu/ingest/session/SessionProperties.java

@@ -3,23 +3,25 @@ package com.lingniu.ingest.session;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
 import java.time.Duration;
+import java.util.Locale;
 
 @ConfigurationProperties(prefix = "lingniu.ingest.session")
 public class SessionProperties {
 
-    private Store store = Store.REDIS;
+    private String store = "redis";
 
     private Duration ttl = Duration.ofMinutes(30);
 
-    public Store getStore() {
+    public String getStore() {
         return store;
     }
 
-    public void setStore(Store store) {
-        if (store == Store.MEMORY) {
-            throw new IllegalStateException("session.store supports only redis; configured value: memory");
+    public void setStore(String store) {
+        String value = store == null || store.isBlank() ? "redis" : store.trim().toLowerCase(Locale.ROOT);
+        if (!"redis".equals(value)) {
+            throw new IllegalStateException("session.store supports only redis; configured value: " + store);
         }
-        this.store = store;
+        this.store = value;
     }
 
     public Duration getTtl() {
@@ -30,8 +32,4 @@ public class SessionProperties {
         this.ttl = ttl;
     }
 
-    public enum Store {
-        MEMORY,
-        REDIS
-    }
 }

modules/core/session-core/src/test/java/com/lingniu/ingest/session/config/SessionCoreAutoConfigurationTest.java

@@ -61,4 +61,10 @@ class SessionCoreAutoConfigurationTest {
                         .hasStackTraceContaining("session.store supports only redis")
                         .hasStackTraceContaining("memory"));
     }
+
+    @Test
+    void sessionPropertiesDoNotExposeLegacyStoreEnum() {
+        assertThatThrownBy(() -> Class.forName("com.lingniu.ingest.session.SessionProperties$Store"))
+                .isInstanceOf(ClassNotFoundException.class);
+    }
 }