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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 main
import (
"fmt"
"io/ioutil"
"net"
"os"
"path/filepath"
"github.com/containernetworking/cni/pkg/skel"
"github.com/containernetworking/cni/pkg/testutils"
"github.com/containernetworking/cni/pkg/types"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("host-local Operations", func() {
It("allocates and releases an address with ADD/DEL", func() {
const ifname string = "eth0"
const nspath string = "/some/where"
tmpDir, err := ioutil.TempDir("", "host_local_artifacts")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tmpDir)
err = ioutil.WriteFile(filepath.Join(tmpDir, "resolv.conf"), []byte("nameserver 192.0.2.3"), 0644)
Expect(err).NotTo(HaveOccurred())
conf := fmt.Sprintf(`{
"cniVersion": "0.2.0",
"name": "mynet",
"type": "ipvlan",
"master": "foo0",
"ipam": {
"type": "host-local",
"subnet": "10.1.2.0/24",
"dataDir": "%s",
"resolvConf": "%s/resolv.conf"
}
}`, tmpDir, tmpDir)
args := &skel.CmdArgs{
ContainerID: "dummy",
Netns: nspath,
IfName: ifname,
StdinData: []byte(conf),
}
// Allocate the IP
result, err := testutils.CmdAddWithResult(nspath, ifname, func() error {
return cmdAdd(args)
})
Expect(err).NotTo(HaveOccurred())
expectedAddress, err := types.ParseCIDR("10.1.2.2/24")
Expect(err).NotTo(HaveOccurred())
expectedAddress.IP = expectedAddress.IP.To16()
Expect(result.IP4.IP).To(Equal(*expectedAddress))
Expect(result.IP4.Gateway).To(Equal(net.ParseIP("10.1.2.1")))
ipFilePath := filepath.Join(tmpDir, "mynet", "10.1.2.2")
contents, err := ioutil.ReadFile(ipFilePath)
Expect(err).NotTo(HaveOccurred())
Expect(string(contents)).To(Equal("dummy"))
lastFilePath := filepath.Join(tmpDir, "mynet", "last_reserved_ip")
contents, err = ioutil.ReadFile(lastFilePath)
Expect(err).NotTo(HaveOccurred())
Expect(string(contents)).To(Equal("10.1.2.2"))
Expect(result.DNS).To(Equal(types.DNS{Nameservers: []string{"192.0.2.3"}}))
// Release the IP
err = testutils.CmdDelWithResult(nspath, ifname, func() error {
return cmdDel(args)
})
Expect(err).NotTo(HaveOccurred())
_, err = os.Stat(ipFilePath)
Expect(err).To(HaveOccurred())
})
It("ignores whitespace in disk files", func() {
const ifname string = "eth0"
const nspath string = "/some/where"
tmpDir, err := ioutil.TempDir("", "host_local_artifacts")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tmpDir)
conf := fmt.Sprintf(`{
"cniVersion": "0.2.0",
"name": "mynet",
"type": "ipvlan",
"master": "foo0",
"ipam": {
"type": "host-local",
"subnet": "10.1.2.0/24",
"dataDir": "%s"
}
}`, tmpDir)
args := &skel.CmdArgs{
ContainerID: " dummy\n ",
Netns: nspath,
IfName: ifname,
StdinData: []byte(conf),
}
// Allocate the IP
result, err := testutils.CmdAddWithResult(nspath, ifname, func() error {
return cmdAdd(args)
})
Expect(err).NotTo(HaveOccurred())
ipFilePath := filepath.Join(tmpDir, "mynet", result.IP4.IP.IP.String())
contents, err := ioutil.ReadFile(ipFilePath)
Expect(err).NotTo(HaveOccurred())
Expect(string(contents)).To(Equal("dummy"))
// Release the IP
err = testutils.CmdDelWithResult(nspath, ifname, func() error {
return cmdDel(args)
})
Expect(err).NotTo(HaveOccurred())
_, err = os.Stat(ipFilePath)
Expect(err).To(HaveOccurred())
})
})
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