[ISSUE apache#9133] Credentials enhancement

acl/src/main/java/org/apache/rocketmq/acl/common/AclClientRPCHook.java

@@ -27,14 +27,19 @@
 import static org.apache.rocketmq.acl.common.SessionCredentials.SIGNATURE;
 
 public class AclClientRPCHook implements RPCHook {
-    private final SessionCredentials sessionCredentials;
+    private final SessionCredentialsProvider sessionCredentialsProvider;
 
     public AclClientRPCHook(SessionCredentials sessionCredentials) {
-        this.sessionCredentials = sessionCredentials;
+        this.sessionCredentialsProvider = new StaticSessionCredentialsProvider(sessionCredentials);
+    }
+
+    public AclClientRPCHook(SessionCredentialsProvider sessionCredentialsProvider) {
+        this.sessionCredentialsProvider = sessionCredentialsProvider;
     }
 
     @Override
     public void doBeforeRequest(String remoteAddr, RemotingCommand request) {
+        SessionCredentials sessionCredentials = this.sessionCredentialsProvider.getSessionCredentials();
         // Add AccessKey and SecurityToken into signature calculating.
         request.addExtField(ACCESS_KEY, sessionCredentials.getAccessKey());
         // The SecurityToken value is unnecessary,user can choose this one.
@@ -59,6 +64,6 @@ protected SortedMap<String, String> parseRequestContent(RemotingCommand request)
     }
 
     public SessionCredentials getSessionCredentials() {
-        return sessionCredentials;
+        return this.sessionCredentialsProvider.getSessionCredentials();
     }
 }

acl/src/main/java/org/apache/rocketmq/acl/common/SessionCredentialsProvider.java

@@ -0,0 +1,5 @@
+package org.apache.rocketmq.acl.common;
+
+public interface SessionCredentialsProvider {
+    SessionCredentials getSessionCredentials();
+}

acl/src/main/java/org/apache/rocketmq/acl/common/StaticSessionCredentialsProvider.java

@@ -0,0 +1,14 @@
+package org.apache.rocketmq.acl.common;
+
+public class StaticSessionCredentialsProvider implements SessionCredentialsProvider {
+    private final SessionCredentials sessionCredentials;
+
+    public StaticSessionCredentialsProvider(SessionCredentials sessionCredentials) {
+        this.sessionCredentials = sessionCredentials;
+    }
+
+    @Override
+    public SessionCredentials getSessionCredentials() {
+        return this.sessionCredentials;
+    }
+}

acl/src/test/java/org/apache/rocketmq/acl/common/AclClientRPCHookTest.java

@@ -36,7 +36,7 @@
 public class AclClientRPCHookTest {
     protected ConcurrentHashMap<Class<? extends CommandCustomHeader>, Field[]> fieldCache =
         new ConcurrentHashMap<>();
-    private AclClientRPCHook aclClientRPCHook = new AclClientRPCHook(null);
+    private AclClientRPCHook aclClientRPCHook = new AclClientRPCHook((SessionCredentials) null);
 
     @Test
     public void testParseRequestContent() {