dubbo.apache.org/dubbo-go/v3@v3.1.1/common/extension/cluster.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  	"fmt"
    22  )
    23  
    24  import (
    25  	"github.com/pkg/errors"
    26  )
    27  
    28  import (
    29  	"dubbo.apache.org/dubbo-go/v3/cluster/cluster"
    30  	"dubbo.apache.org/dubbo-go/v3/common/constant"
    31  )
    32  
    33  var clusters = make(map[string]func() cluster.Cluster)
    34  
    35  // SetCluster sets the cluster fault-tolerant mode with @name
    36  // For example: available/failfast/broadcast/failfast/failsafe/...
    37  func SetCluster(name string, fcn func() cluster.Cluster) {
    38  	clusters[name] = fcn
    39  }
    40  
    41  // GetCluster finds the cluster fault-tolerant mode with @name
    42  func GetCluster(name string) (cluster.Cluster, error) {
    43  	if clusters[name] == nil {
    44  		return nil, errors.New(fmt.Sprintf(constant.NonImportErrorMsgFormat, constant.ClusterKeyFailover))
    45  	}
    46  	return clusters[name](), nil
    47  }