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// 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 testutils
import (
"io/ioutil"
"os"
"github.com/containernetworking/cni/pkg/skel"
"github.com/containernetworking/cni/pkg/types"
"github.com/containernetworking/cni/pkg/version"
)
func envCleanup() {
os.Unsetenv("CNI_COMMAND")
os.Unsetenv("CNI_PATH")
os.Unsetenv("CNI_NETNS")
os.Unsetenv("CNI_IFNAME")
os.Unsetenv("CNI_CONTAINERID")
}
func CmdAdd(cniNetns, cniContainerID, cniIfname string, conf []byte, f func() error) (types.Result, []byte, error) {
os.Setenv("CNI_COMMAND", "ADD")
os.Setenv("CNI_PATH", os.Getenv("PATH"))
os.Setenv("CNI_NETNS", cniNetns)
os.Setenv("CNI_IFNAME", cniIfname)
os.Setenv("CNI_CONTAINERID", cniContainerID)
defer envCleanup()
// Redirect stdout to capture plugin result
oldStdout := os.Stdout
r, w, err := os.Pipe()
if err != nil {
return nil, nil, err
}
os.Stdout = w
err = f()
w.Close()
var out []byte
if err == nil {
out, err = ioutil.ReadAll(r)
}
os.Stdout = oldStdout
// Return errors after restoring stdout so Ginkgo will correctly
// emit verbose error information on stdout
if err != nil {
return nil, nil, err
}
// Plugin must return result in same version as specified in netconf
versionDecoder := &version.ConfigDecoder{}
confVersion, err := versionDecoder.Decode(conf)
if err != nil {
return nil, nil, err
}
result, err := version.NewResult(confVersion, out)
if err != nil {
return nil, nil, err
}
return result, out, nil
}
func CmdAddWithArgs(args *skel.CmdArgs, f func() error) (types.Result, []byte, error) {
return CmdAdd(args.Netns, args.ContainerID, args.IfName, args.StdinData, f)
}
func CmdCheck(cniNetns, cniContainerID, cniIfname string, conf []byte, f func() error) error {
os.Setenv("CNI_COMMAND", "CHECK")
os.Setenv("CNI_PATH", os.Getenv("PATH"))
os.Setenv("CNI_NETNS", cniNetns)
os.Setenv("CNI_IFNAME", cniIfname)
os.Setenv("CNI_CONTAINERID", cniContainerID)
defer envCleanup()
return f()
}
func CmdCheckWithArgs(args *skel.CmdArgs, f func() error) error {
return CmdCheck(args.Netns, args.ContainerID, args.IfName, args.StdinData, f)
}
func CmdDel(cniNetns, cniContainerID, cniIfname string, f func() error) error {
os.Setenv("CNI_COMMAND", "DEL")
os.Setenv("CNI_PATH", os.Getenv("PATH"))
os.Setenv("CNI_NETNS", cniNetns)
os.Setenv("CNI_IFNAME", cniIfname)
os.Setenv("CNI_CONTAINERID", cniContainerID)
defer envCleanup()
return f()
}
func CmdDelWithArgs(args *skel.CmdArgs, f func() error) error {
return CmdDel(args.Netns, args.ContainerID, args.IfName, f)
}
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