dubbo.apache.org/dubbo-go/v3@v3.1.1/filter/rejected_execution_handler.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  	"dubbo.apache.org/dubbo-go/v3/common"
    22  	"dubbo.apache.org/dubbo-go/v3/protocol"
    23  )
    24  
    25  // RejectedExecutionHandler is the interface which defines the handler to handle exceptions from invoking filters.
    26  // If the invocation cannot pass any validation in filter, like ExecuteLimitFilter and TpsLimitFilter,
    27  // the implementation will be used. The common case is that sometimes you want to return the default
    28  // value when the request was rejected.  Or you want to be warned if any request was rejected.
    29  // In such situation, implement this interface and register it by invoking extension.SetRejectedExecutionHandler.
    30  //
    31  // RejectedExecution method will be called if the invocation was rejected by some component.
    32  type RejectedExecutionHandler interface {
    33  	RejectedExecution(url *common.URL, invocation protocol.Invocation) protocol.Result
    34  }