--- /dev/null
+// 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"
+ "path/filepath"
+
+ "github.com/containernetworking/cni/libcni"
+ "github.com/containernetworking/cni/pkg/version/legacy_examples"
+ . "github.com/onsi/ginkgo"
+ . "github.com/onsi/gomega"
+)
+
+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())
+ })
+})
--- /dev/null
+// 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 legacy_examples contains sample code from prior versions of
+// the CNI library, for use in verifying backwards compatibility.
+package legacy_examples
+
+import (
+ "io/ioutil"
+ "net"
+ "path/filepath"
+ "sync"
+
+ "github.com/containernetworking/cni/pkg/types"
+ "github.com/containernetworking/cni/pkg/version/testhelpers"
+)
+
+// An Example is a Git reference to the CNI repo and a Golang CNI plugin that
+// builds against that version of the repo.
+//
+// By convention, every Example plugin returns an ADD result that is
+// semantically equivalent to the ExpectedResult.
+type Example struct {
+ Name string
+ CNIRepoGitRef string
+ PluginSource string
+}
+
+var buildDir = ""
+var buildDirLock sync.Mutex
+
+func ensureBuildDirExists() error {
+ buildDirLock.Lock()
+ defer buildDirLock.Unlock()
+
+ if buildDir != "" {
+ return nil
+ }
+
+ var err error
+ buildDir, err = ioutil.TempDir("", "cni-example-plugins")
+ return err
+}
+
+// Build builds the example, returning the path to the binary
+func (e Example) Build() (string, error) {
+ if err := ensureBuildDirExists(); err != nil {
+ return "", err
+ }
+
+ outBinPath := filepath.Join(buildDir, e.Name)
+
+ if err := testhelpers.BuildAt([]byte(e.PluginSource), e.CNIRepoGitRef, outBinPath); err != nil {
+ return "", err
+ }
+ return outBinPath, nil
+}
+
+// V010 acts like a CNI plugin from the v0.1.0 era
+var V010 = Example{
+ Name: "example_v010",
+ CNIRepoGitRef: "2c482f4",
+ PluginSource: `package main
+
+import (
+ "net"
+
+ "github.com/containernetworking/cni/pkg/skel"
+ "github.com/containernetworking/cni/pkg/types"
+)
+
+var result = types.Result{
+ IP4: &types.IPConfig{
+ IP: net.IPNet{
+ IP: net.ParseIP("10.1.2.3"),
+ Mask: net.CIDRMask(24, 32),
+ },
+ Gateway: net.ParseIP("10.1.2.1"),
+ Routes: []types.Route{
+ types.Route{
+ Dst: net.IPNet{
+ IP: net.ParseIP("0.0.0.0"),
+ Mask: net.CIDRMask(0, 32),
+ },
+ GW: net.ParseIP("10.1.0.1"),
+ },
+ },
+ },
+ DNS: types.DNS{
+ Nameservers: []string{"8.8.8.8"},
+ Domain: "example.com",
+ },
+}
+
+func c(_ *skel.CmdArgs) error { result.Print(); return nil }
+
+func main() { skel.PluginMain(c, c) }
+`,
+}
+
+// ExpectedResult is the current representation of the plugin result
+// that is expected from each of the examples.
+//
+// As we change the CNI spec, the Result type and this value may change.
+// The text of the example plugins should not.
+var ExpectedResult = &types.Result{
+ IP4: &types.IPConfig{
+ IP: net.IPNet{
+ IP: net.ParseIP("10.1.2.3"),
+ Mask: net.CIDRMask(24, 32),
+ },
+ Gateway: net.ParseIP("10.1.2.1"),
+ Routes: []types.Route{
+ types.Route{
+ Dst: net.IPNet{
+ IP: net.ParseIP("0.0.0.0"),
+ Mask: net.CIDRMask(0, 32),
+ },
+ GW: net.ParseIP("10.1.0.1"),
+ },
+ },
+ },
+ DNS: types.DNS{
+ Nameservers: []string{"8.8.8.8"},
+ Domain: "example.com",
+ },
+}
--- /dev/null
+// 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 legacy_examples_test
+
+import (
+ . "github.com/onsi/ginkgo"
+ . "github.com/onsi/gomega"
+
+ "testing"
+)
+
+func TestLegacyExamples(t *testing.T) {
+ RegisterFailHandler(Fail)
+ RunSpecs(t, "LegacyExamples Suite")
+}
--- /dev/null
+// 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 legacy_examples_test
+
+import (
+ "os"
+ "path/filepath"
+
+ "github.com/containernetworking/cni/pkg/version/legacy_examples"
+ . "github.com/onsi/ginkgo"
+ . "github.com/onsi/gomega"
+)
+
+var _ = Describe("The v0.1.0 Example", func() {
+ It("builds ok", func() {
+ example := legacy_examples.V010
+ pluginPath, err := example.Build()
+ Expect(err).NotTo(HaveOccurred())
+
+ Expect(filepath.Base(pluginPath)).To(Equal(example.Name))
+
+ Expect(os.RemoveAll(pluginPath)).To(Succeed())
+ })
+})
git://git.halfball.org / cni.git / commitdiff