github.com/john-lin/cni@v0.6.0-rc1.0.20170712150331-b69e640cc0e2/pkg/version/version.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 ( 18 "fmt" 19 20 "github.com/containernetworking/cni/pkg/types" 21 "github.com/containernetworking/cni/pkg/types/020" 22 "github.com/containernetworking/cni/pkg/types/current" 23 ) 24 25 // Current reports the version of the CNI spec implemented by this library 26 func Current() string { 27 return "0.3.1" 28 } 29 30 // Legacy PluginInfo describes a plugin that is backwards compatible with the 31 // CNI spec version 0.1.0. In particular, a runtime compiled against the 0.1.0 32 // library ought to work correctly with a plugin that reports support for 33 // Legacy versions. 34 // 35 // Any future CNI spec versions which meet this definition should be added to 36 // this list. 37 var Legacy = PluginSupports("0.1.0", "0.2.0") 38 var All = PluginSupports("0.1.0", "0.2.0", "0.3.0", "0.3.1") 39 40 var resultFactories = []struct { 41 supportedVersions []string 42 newResult types.ResultFactoryFunc 43 }{ 44 {current.SupportedVersions, current.NewResult}, 45 {types020.SupportedVersions, types020.NewResult}, 46 } 47 48 // Finds a Result object matching the requested version (if any) and asks 49 // that object to parse the plugin result, returning an error if parsing failed. 50 func NewResult(version string, resultBytes []byte) (types.Result, error) { 51 reconciler := &Reconciler{} 52 for _, resultFactory := range resultFactories { 53 err := reconciler.CheckRaw(version, resultFactory.supportedVersions) 54 if err == nil { 55 // Result supports this version 56 return resultFactory.newResult(resultBytes) 57 } 58 } 59 60 return nil, fmt.Errorf("unsupported CNI result version %q", version) 61 }