4bee884fae
CNI is developed by more than just CoreOS, Inc and the copyright is retained by all CNI contributors (for their respective contributed code).
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
// Copyright 2015 CNI authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package invoke
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import (
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"os"
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"strings"
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)
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type CNIArgs interface {
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// For use with os/exec; i.e., return nil to inherit the
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// environment from this process
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AsEnv() []string
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}
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type inherited struct{}
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var inheritArgsFromEnv inherited
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func (_ *inherited) AsEnv() []string {
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return nil
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}
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func ArgsFromEnv() CNIArgs {
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return &inheritArgsFromEnv
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}
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type Args struct {
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Command string
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ContainerID string
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NetNS string
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PluginArgs [][2]string
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PluginArgsStr string
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IfName string
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Path string
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}
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func (args *Args) AsEnv() []string {
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env := os.Environ()
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pluginArgsStr := args.PluginArgsStr
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if pluginArgsStr == "" {
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pluginArgsStr = stringify(args.PluginArgs)
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}
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env = append(env,
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"CNI_COMMAND="+args.Command,
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"CNI_CONTAINERID="+args.ContainerID,
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"CNI_NETNS="+args.NetNS,
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"CNI_ARGS="+pluginArgsStr,
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"CNI_IFNAME="+args.IfName,
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"CNI_PATH="+args.Path)
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return env
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}
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// taken from rkt/networking/net_plugin.go
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func stringify(pluginArgs [][2]string) string {
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entries := make([]string, len(pluginArgs))
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for i, kv := range pluginArgs {
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entries[i] = strings.Join(kv[:], "=")
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}
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return strings.Join(entries, ";")
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}
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