144 lines
3.8 KiB
Go
144 lines
3.8 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package server
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import (
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"context"
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"errors"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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criconfig "github.com/containerd/containerd/pkg/cri/config"
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servertesting "github.com/containerd/containerd/pkg/cri/testing"
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)
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func TestUpdateRuntimeConfig(t *testing.T) {
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const (
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testTemplate = `
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{
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"name": "test-pod-network",
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"cniVersion": "1.0.0",
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"plugins": [
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{
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"type": "ptp",
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"mtu": 1460,
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"ipam": {
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"type": "host-local",
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"subnet": "{{.PodCIDR}}",
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"ranges": [{{range $i, $range := .PodCIDRRanges}}{{if $i}}, {{end}}[{"subnet": "{{$range}}"}]{{end}}],
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"routes": [{{range $i, $route := .Routes}}{{if $i}}, {{end}}{"dst": "{{$route}}"}{{end}}]
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}
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},
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]
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}`
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testCIDR = "10.0.0.0/24, 2001:4860:4860::/64"
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expected = `
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{
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"name": "test-pod-network",
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"cniVersion": "1.0.0",
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"plugins": [
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{
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"type": "ptp",
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"mtu": 1460,
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"ipam": {
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"type": "host-local",
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"subnet": "10.0.0.0/24",
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"ranges": [[{"subnet": "10.0.0.0/24"}], [{"subnet": "2001:4860:4860::/64"}]],
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"routes": [{"dst": "0.0.0.0/0"}, {"dst": "::/0"}]
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}
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},
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]
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}`
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)
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for _, test := range []struct {
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name string
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noTemplate bool
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emptyCIDR bool
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networkReady bool
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expectCNIConfig bool
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}{
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{
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name: "should not generate cni config if cidr is empty",
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emptyCIDR: true,
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expectCNIConfig: false,
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},
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{
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name: "should not generate cni config if template file is not specified",
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noTemplate: true,
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expectCNIConfig: false,
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},
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{
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name: "should not generate cni config if network is ready",
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networkReady: true,
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expectCNIConfig: false,
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},
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{
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name: "should generate cni config if template is specified and cidr is provided",
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expectCNIConfig: true,
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},
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} {
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test := test
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t.Run(test.name, func(t *testing.T) {
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testDir := t.TempDir()
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templateName := filepath.Join(testDir, "template")
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err := os.WriteFile(templateName, []byte(testTemplate), 0666)
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require.NoError(t, err)
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confDir := filepath.Join(testDir, "net.d")
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confName := filepath.Join(confDir, cniConfigFileName)
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c := newTestCRIService()
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c.config.CniConfig = criconfig.CniConfig{
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NetworkPluginConfDir: confDir,
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NetworkPluginConfTemplate: templateName,
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}
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req := &runtime.UpdateRuntimeConfigRequest{
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RuntimeConfig: &runtime.RuntimeConfig{
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NetworkConfig: &runtime.NetworkConfig{
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PodCidr: testCIDR,
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},
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},
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}
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if test.noTemplate {
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c.config.CniConfig.NetworkPluginConfTemplate = ""
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}
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if test.emptyCIDR {
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req.RuntimeConfig.NetworkConfig.PodCidr = ""
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}
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if !test.networkReady {
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c.netPlugin[defaultNetworkPlugin].(*servertesting.FakeCNIPlugin).StatusErr = errors.New("random error")
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c.netPlugin[defaultNetworkPlugin].(*servertesting.FakeCNIPlugin).LoadErr = errors.New("random error")
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}
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_, err = c.UpdateRuntimeConfig(context.Background(), req)
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assert.NoError(t, err)
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if !test.expectCNIConfig {
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_, err := os.Stat(confName)
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assert.Error(t, err)
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} else {
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got, err := os.ReadFile(confName)
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assert.NoError(t, err)
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assert.Equal(t, expected, string(got))
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}
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})
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}
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}
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