diff options
author | Reinhard Tartler <siretart@tauware.de> | 2020-12-02 09:24:47 -0500 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2020-12-02 09:24:58 -0500 |
commit | 29cc1453eab24cbbfcdd21b9b86a36ff3183a840 (patch) | |
tree | 6a8ea32fea737936384e95e2ba2109dfc373697c /vendor/github.com/containernetworking/cni/pkg/version/plugin.go | |
parent | 8086b728c2d5c06e05010693cdbe64e972a31128 (diff) |
delete vendor tree
Diffstat (limited to 'vendor/github.com/containernetworking/cni/pkg/version/plugin.go')
-rw-r--r-- | vendor/github.com/containernetworking/cni/pkg/version/plugin.go | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go b/vendor/github.com/containernetworking/cni/pkg/version/plugin.go deleted file mode 100644 index 1df4272..0000000 --- a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go +++ /dev/null @@ -1,144 +0,0 @@ -// Copyright 2016 CNI authors -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package version - -import ( - "encoding/json" - "fmt" - "io" - "strconv" - "strings" -) - -// PluginInfo reports information about CNI versioning -type PluginInfo interface { - // SupportedVersions returns one or more CNI spec versions that the plugin - // supports. If input is provided in one of these versions, then the plugin - // promises to use the same CNI version in its response - SupportedVersions() []string - - // Encode writes this CNI version information as JSON to the given Writer - Encode(io.Writer) error -} - -type pluginInfo struct { - CNIVersion_ string `json:"cniVersion"` - SupportedVersions_ []string `json:"supportedVersions,omitempty"` -} - -// pluginInfo implements the PluginInfo interface -var _ PluginInfo = &pluginInfo{} - -func (p *pluginInfo) Encode(w io.Writer) error { - return json.NewEncoder(w).Encode(p) -} - -func (p *pluginInfo) SupportedVersions() []string { - return p.SupportedVersions_ -} - -// PluginSupports returns a new PluginInfo that will report the given versions -// as supported -func PluginSupports(supportedVersions ...string) PluginInfo { - if len(supportedVersions) < 1 { - panic("programmer error: you must support at least one version") - } - return &pluginInfo{ - CNIVersion_: Current(), - SupportedVersions_: supportedVersions, - } -} - -// PluginDecoder can decode the response returned by a plugin's VERSION command -type PluginDecoder struct{} - -func (*PluginDecoder) Decode(jsonBytes []byte) (PluginInfo, error) { - var info pluginInfo - err := json.Unmarshal(jsonBytes, &info) - if err != nil { - return nil, fmt.Errorf("decoding version info: %s", err) - } - if info.CNIVersion_ == "" { - return nil, fmt.Errorf("decoding version info: missing field cniVersion") - } - if len(info.SupportedVersions_) == 0 { - if info.CNIVersion_ == "0.2.0" { - return PluginSupports("0.1.0", "0.2.0"), nil - } - return nil, fmt.Errorf("decoding version info: missing field supportedVersions") - } - return &info, nil -} - -// ParseVersion parses a version string like "3.0.1" or "0.4.5" into major, -// minor, and micro numbers or returns an error -func ParseVersion(version string) (int, int, int, error) { - var major, minor, micro int - if version == "" { - return -1, -1, -1, fmt.Errorf("invalid version %q: the version is empty", version) - } - - parts := strings.Split(version, ".") - if len(parts) >= 4 { - return -1, -1, -1, fmt.Errorf("invalid version %q: too many parts", version) - } - - major, err := strconv.Atoi(parts[0]) - if err != nil { - return -1, -1, -1, fmt.Errorf("failed to convert major version part %q: %v", parts[0], err) - } - - if len(parts) >= 2 { - minor, err = strconv.Atoi(parts[1]) - if err != nil { - return -1, -1, -1, fmt.Errorf("failed to convert minor version part %q: %v", parts[1], err) - } - } - - if len(parts) >= 3 { - micro, err = strconv.Atoi(parts[2]) - if err != nil { - return -1, -1, -1, fmt.Errorf("failed to convert micro version part %q: %v", parts[2], err) - } - } - - return major, minor, micro, nil -} - -// GreaterThanOrEqualTo takes two string versions, parses them into major/minor/micro -// numbers, and compares them to determine whether the first version is greater -// than or equal to the second -func GreaterThanOrEqualTo(version, otherVersion string) (bool, error) { - firstMajor, firstMinor, firstMicro, err := ParseVersion(version) - if err != nil { - return false, err - } - - secondMajor, secondMinor, secondMicro, err := ParseVersion(otherVersion) - if err != nil { - return false, err - } - - if firstMajor > secondMajor { - return true, nil - } else if firstMajor == secondMajor { - if firstMinor > secondMinor { - return true, nil - } else if firstMinor == secondMinor && firstMicro >= secondMicro { - return true, nil - } - } - return false, nil -} |