dubbo.apache.org/dubbo-go/v3@v3.1.1/common/extension/loadbalance.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 extension
    19  
    20  import (
    21  	"dubbo.apache.org/dubbo-go/v3/cluster/loadbalance"
    22  )
    23  
    24  var loadbalances = make(map[string]func() loadbalance.LoadBalance)
    25  
    26  // SetLoadbalance sets the loadbalance extension with @name
    27  // For example: random/round_robin/consistent_hash/least_active/...
    28  func SetLoadbalance(name string, fcn func() loadbalance.LoadBalance) {
    29  	loadbalances[name] = fcn
    30  }
    31  
    32  // GetLoadbalance finds the loadbalance extension with @name
    33  func GetLoadbalance(name string) loadbalance.LoadBalance {
    34  	if loadbalances[name] == nil {
    35  		panic("loadbalance for " + name + " is not existing, make sure you have import the package.")
    36  	}
    37  
    38  	return loadbalances[name]()
    39  }