diff --git a/src/main/java/org/codelibs/fess/helper/ActivityHelper.java b/src/main/java/org/codelibs/fess/helper/ActivityHelper.java
index 17ace7223..a3cab81c1 100644
--- a/src/main/java/org/codelibs/fess/helper/ActivityHelper.java
+++ b/src/main/java/org/codelibs/fess/helper/ActivityHelper.java
@@ -19,6 +19,8 @@ import static org.codelibs.core.stream.StreamUtil.stream;
 
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.Locale;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 import javax.annotation.PostConstruct;
@@ -126,7 +128,21 @@ public class ActivityHelper {
         log(buf);
     }
 
-    private void log(final StringBuilder buf) {
+    public void print(final String action, final OptionalThing<FessUserBean> user, final Map<String, String> params) {
+        final StringBuilder buf = new StringBuilder(100);
+        buf.append("action:");
+        buf.append(action.replace('\t', '_').toUpperCase(Locale.ENGLISH));
+        buf.append('\t');
+        buf.append("user:");
+        buf.append(user.map(FessUserBean::getUserId).orElse("-"));
+        params.entrySet().stream().map(e -> e.getKey() + ":" + e.getValue()).map(s -> s.replace('\t', '_')).sorted().forEach(s -> {
+            buf.append('\t');
+            buf.append(s);
+        });
+        log(buf);
+    }
+
+    protected void log(final StringBuilder buf) {
         buf.append('\t');
         buf.append("ip:");
         buf.append(getClientIp());
diff --git a/src/test/java/org/codelibs/fess/helper/ActivityHelperTest.java b/src/test/java/org/codelibs/fess/helper/ActivityHelperTest.java
new file mode 100644
index 000000000..cdda35543
--- /dev/null
+++ b/src/test/java/org/codelibs/fess/helper/ActivityHelperTest.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2012-2022 CodeLibs Project and the Others.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+package org.codelibs.fess.helper;
+
+import org.codelibs.fess.entity.FessUser;
+import org.codelibs.fess.mylasta.action.FessUserBean;
+import org.codelibs.fess.unit.UnitFessTestCase;
+import org.dbflute.optional.OptionalThing;
+import org.opensearch.common.collect.Map;
+
+public class ActivityHelperTest extends UnitFessTestCase {
+
+    private ActivityHelper activityHelper;
+
+    private ThreadLocal<String> localLogMsg = new ThreadLocal<>();
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+        activityHelper = new ActivityHelper() {
+            @Override
+            protected void log(final StringBuilder buf) {
+                localLogMsg.set(buf.toString());
+            }
+        };
+    }
+
+    public void test_login() {
+        activityHelper.login(OptionalThing.empty());
+        assertEquals("action:LOGIN\tuser:-\tpermissions:-", localLogMsg.get());
+
+        activityHelper.login(createUser("testuser", new String[0]));
+        assertEquals("action:LOGIN\tuser:testuser\tpermissions:-", localLogMsg.get());
+
+        activityHelper.login(createUser("testuser", new String[] { "111", "222" }));
+        assertEquals("action:LOGIN\tuser:testuser\tpermissions:111|222", localLogMsg.get());
+    }
+
+    public void test_loginFailure() {
+        activityHelper.loginFailure(OptionalThing.empty());
+        assertEquals("action:LOGIN_FAILURE", localLogMsg.get());
+    }
+
+    public void test_logout() {
+        activityHelper.logout(OptionalThing.empty());
+        assertEquals("action:LOGOUT\tuser:-\tpermissions:-", localLogMsg.get());
+
+        activityHelper.logout(createUser("testuser", new String[0]));
+        assertEquals("action:LOGOUT\tuser:testuser\tpermissions:-", localLogMsg.get());
+
+        activityHelper.logout(createUser("testuser", new String[] { "111", "222" }));
+        assertEquals("action:LOGOUT\tuser:testuser\tpermissions:111|222", localLogMsg.get());
+    }
+
+    public void test_access() {
+        activityHelper.access(OptionalThing.empty(), "/", "aaa");
+        assertEquals("action:ACCESS\tuser:-\tpath:/\texecute:aaa", localLogMsg.get());
+
+        activityHelper.access(createUser("testuser", new String[0]), "/aaa", "bbb");
+        assertEquals("action:ACCESS\tuser:testuser\tpath:/aaa\texecute:bbb", localLogMsg.get());
+
+        activityHelper.access(createUser("testuser", new String[] { "111", "222" }), "/aaa/bbb", "ccc");
+        assertEquals("action:ACCESS\tuser:testuser\tpath:/aaa/bbb\texecute:ccc", localLogMsg.get());
+    }
+
+    public void test_permissionChanged() {
+        activityHelper.permissionChanged(OptionalThing.empty());
+        assertEquals("action:UPDATE_PERMISSION\tuser:-\tpermissions:-", localLogMsg.get());
+
+        activityHelper.permissionChanged(createUser("testuser", new String[0]));
+        assertEquals("action:UPDATE_PERMISSION\tuser:testuser\tpermissions:-", localLogMsg.get());
+
+        activityHelper.permissionChanged(createUser("testuser", new String[] { "111", "222" }));
+        assertEquals("action:UPDATE_PERMISSION\tuser:testuser\tpermissions:111|222", localLogMsg.get());
+    }
+
+    public void test_print() {
+        activityHelper.print("aaa", OptionalThing.empty(), Map.of());
+        assertEquals("action:AAA\tuser:-", localLogMsg.get());
+
+        activityHelper.print("aaa bbb", createUser("testuser", new String[0]), Map.of("111", "222"));
+        assertEquals("action:AAA BBB\tuser:testuser\t111:222", localLogMsg.get());
+
+        activityHelper.print("ccc", createUser("testuser", new String[] { "111", "222" }), Map.of("111", "222", "333", "444"));
+        assertEquals("action:CCC\tuser:testuser\t111:222\t333:444", localLogMsg.get());
+    }
+
+    OptionalThing<FessUserBean> createUser(String name, String[] permissions) {
+        return OptionalThing.of(new FessUserBean(new TestUser(name, permissions)));
+    }
+
+    static class TestUser implements FessUser {
+
+        private static final long serialVersionUID = 1L;
+
+        private String name;
+
+        private String[] permissions;
+
+        TestUser(String name, String[] permissions) {
+            this.name = name;
+            this.permissions = permissions;
+
+        }
+
+        @Override
+        public String getName() {
+            return name;
+        }
+
+        @Override
+        public String[] getRoleNames() {
+            return new String[0];
+        }
+
+        @Override
+        public String[] getGroupNames() {
+            return new String[0];
+        }
+
+        @Override
+        public String[] getPermissions() {
+            return permissions;
+        }
+
+    }
+}