diff --git a/cluster/router/condition/default_health_check.go b/cluster/router/condition/default_health_check.go
index ef4e2e53b1d459b7e276563fec5d87810545d09b..70542feb49de3eae702632c788decc32066413de 100644
--- a/cluster/router/condition/default_health_check.go
+++ b/cluster/router/condition/default_health_check.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 condition
 
 import (
diff --git a/cluster/router/condition/default_health_check_test.go b/cluster/router/condition/default_health_check_test.go
index 0a7f24392191d48a31ea93bd088f47c918257833..730e787ce44d6830556cb17e4d227f8972226e7d 100644
--- a/cluster/router/condition/default_health_check_test.go
+++ b/cluster/router/condition/default_health_check_test.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 condition
 
 import (
diff --git a/cluster/router/condition/health_check_route.go b/cluster/router/condition/health_check_route.go
index b40d22ddb5f35e13679a215477372e6a070a46e0..e25baf3b5dd806ee91938b363127981556677f88 100644
--- a/cluster/router/condition/health_check_route.go
+++ b/cluster/router/condition/health_check_route.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 condition
 
 import (
diff --git a/cluster/router/condition/health_check_route_test.go b/cluster/router/condition/health_check_route_test.go
index d345f199496189b0f7e1ea8ab4409e0b277dd17f..e2fe0856f93c1bba319b694beeb198ef8e530555 100644
--- a/cluster/router/condition/health_check_route_test.go
+++ b/cluster/router/condition/health_check_route_test.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 condition
 
 import (
@@ -5,9 +22,11 @@ import (
 	"testing"
 	"time"
 )
+
 import (
 	"github.com/stretchr/testify/assert"
 )
+
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/protocol"
diff --git a/cluster/router/health_checker.go b/cluster/router/health_checker.go
index 44e1f7ace624f17fa6b7ec755b1d1a73eb312b2c..d9e3087a272dd500cdd1dc9dc6680d436891f88b 100644
--- a/cluster/router/health_checker.go
+++ b/cluster/router/health_checker.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 router
 
 import (
diff --git a/common/extension/health_checker.go b/common/extension/health_checker.go
index 62ad1d47ff982389052347cbab7aec3a8712893a..365c5d0910812efb00eb94408bb226115b037c02 100644
--- a/common/extension/health_checker.go
+++ b/common/extension/health_checker.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 extension
 
 import (
diff --git a/common/extension/health_checker_test.go b/common/extension/health_checker_test.go
index 71547ce5b86d873465b55224d900048eee8f9c4a..ec934e6e9cedc5acbef350f17b87b0b2e37bc844 100644
--- a/common/extension/health_checker_test.go
+++ b/common/extension/health_checker_test.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 extension
 
 import (