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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 libcni_test
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/containernetworking/cni/libcni"
"github.com/containernetworking/cni/pkg/version/legacy_examples"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gexec"
)
var _ = Describe("Backwards compatibility", func() {
It("correctly handles the response from a legacy plugin", func() {
example := legacy_examples.V010
pluginPath, err := example.Build()
Expect(err).NotTo(HaveOccurred())
netConf, err := libcni.ConfFromBytes([]byte(fmt.Sprintf(
`{ "name": "old-thing", "type": "%s" }`, example.Name)))
Expect(err).NotTo(HaveOccurred())
runtimeConf := &libcni.RuntimeConf{
ContainerID: "some-container-id",
NetNS: "/some/netns/path",
IfName: "eth0",
}
cniConfig := &libcni.CNIConfig{Path: []string{filepath.Dir(pluginPath)}}
result, err := cniConfig.AddNetwork(netConf, runtimeConf)
Expect(err).NotTo(HaveOccurred())
Expect(result).To(Equal(legacy_examples.ExpectedResult))
Expect(os.RemoveAll(pluginPath)).To(Succeed())
})
It("correctly handles the request from a runtime with an older libcni", func() {
// We need to be root (or have CAP_SYS_ADMIN...)
if os.Geteuid() != 0 {
Fail("must be run as root")
}
example := legacy_examples.V010_Runtime
binPath, err := example.Build()
Expect(err).NotTo(HaveOccurred())
for _, configName := range example.NetConfs {
configStr, ok := legacy_examples.NetConfs[configName]
if !ok {
Fail("Invalid config name " + configName)
}
cmd := exec.Command(binPath, pluginDirs...)
cmd.Stdin = strings.NewReader(configStr)
session, err := gexec.Start(cmd, GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
Eventually(session).Should(gexec.Exit(0))
}
})
})
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