github.com/cs3org/reva/v2@v2.27.7/pkg/registry/registry.go (about)

     1  // Copyright 2018-2023 CERN
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // In applying this license, CERN does not waive the privileges and immunities
    16  // granted to it by virtue of its status as an Intergovernmental Organization
    17  // or submit itself to any jurisdiction.
    18  
    19  package registry
    20  
    21  import (
    22  	mRegistry "go-micro.dev/v4/registry"
    23  	"go-micro.dev/v4/selector"
    24  )
    25  
    26  var (
    27  	// fixme: get rid of global registry
    28  	gRegistry mRegistry.Registry
    29  )
    30  
    31  // Init prepares the service registry
    32  func Init(nRegistry mRegistry.Registry) error {
    33  	// first come first serves, the first service defines the registry type.
    34  	if gRegistry == nil && nRegistry != nil {
    35  		gRegistry = nRegistry
    36  	}
    37  
    38  	return nil
    39  }
    40  
    41  // GetRegistry exposes the registry
    42  func GetRegistry() mRegistry.Registry {
    43  	return gRegistry
    44  }
    45  
    46  // GetNodeAddress returns a random address from the service nodes
    47  func GetNodeAddress(services []*mRegistry.Service) (string, error) {
    48  	next := selector.Random(services)
    49  	node, err := next()
    50  	if err != nil {
    51  		return "", err
    52  	}
    53  
    54  	return node.Address, nil
    55  }