github.com/baraj55/containernetworking-cni@v0.7.2-0.20200219164625-56ace59a9e7f/pkg/version/reconcile.go (about)

     1  // Copyright 2016 CNI authors
     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  package version
    16  
    17  import "fmt"
    18  
    19  type ErrorIncompatible struct {
    20  	Config    string
    21  	Supported []string
    22  }
    23  
    24  func (e *ErrorIncompatible) Details() string {
    25  	return fmt.Sprintf("config is %q, plugin supports %q", e.Config, e.Supported)
    26  }
    27  
    28  func (e *ErrorIncompatible) Error() string {
    29  	return fmt.Sprintf("incompatible CNI versions: %s", e.Details())
    30  }
    31  
    32  type Reconciler struct{}
    33  
    34  func (r *Reconciler) Check(configVersion string, pluginInfo PluginInfo) *ErrorIncompatible {
    35  	return r.CheckRaw(configVersion, pluginInfo.SupportedVersions())
    36  }
    37  
    38  func (*Reconciler) CheckRaw(configVersion string, supportedVersions []string) *ErrorIncompatible {
    39  	for _, supportedVersion := range supportedVersions {
    40  		if configVersion == supportedVersion {
    41  			return nil
    42  		}
    43  	}
    44  
    45  	return &ErrorIncompatible{
    46  		Config:    configVersion,
    47  		Supported: supportedVersions,
    48  	}
    49  }