vitess.io/vitess@v0.16.2/go/vt/topo/consultopo/version.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package consultopo
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"vitess.io/vitess/go/vt/topo"
    23  )
    24  
    25  // ConsulVersion is consul's idea of a version.
    26  // It implements topo.Version.
    27  // We use the native consul version type, uint64.
    28  type ConsulVersion uint64
    29  
    30  // String is part of the topo.Version interface.
    31  func (v ConsulVersion) String() string {
    32  	return fmt.Sprintf("%v", uint64(v))
    33  }
    34  
    35  // VersionFromInt is used by old-style functions to create a proper
    36  // Version: if version is -1, returns nil. Otherwise returns the
    37  // ConsulVersion object.
    38  func VersionFromInt(version int64) topo.Version {
    39  	if version == -1 {
    40  		return nil
    41  	}
    42  	return ConsulVersion(version)
    43  }