dubbo.apache.org/dubbo-go/v3@v3.1.1/filter/filter.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package filter
    19  
    20  import (
    21  	"context"
    22  )
    23  
    24  import (
    25  	"dubbo.apache.org/dubbo-go/v3/protocol"
    26  )
    27  
    28  // Filter is the interface which wraps Invoke and OnResponse method and defines the functions of a filter.
    29  // Invoke method is the core function of a filter, it determines the process of the filter.
    30  // OnResponse method updates the results from Invoke and then returns the modified results.
    31  type Filter interface {
    32  	Invoke(context.Context, protocol.Invoker, protocol.Invocation) protocol.Result
    33  	OnResponse(context.Context, protocol.Result, protocol.Invoker, protocol.Invocation) protocol.Result
    34  }