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step_post_build.go
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step_post_build.go
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package cmd
import (
"fmt"
"io"
"github.com/jenkins-x/jx/pkg/kube/services"
"os"
"os/exec"
"strings"
"bufio"
"path/filepath"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/kube"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/spf13/cobra"
"gopkg.in/AlecAivazis/survey.v1/terminal"
)
// StepPostBuildOptions contains the command line flags
type StepPostBuildOptions struct {
StepOptions
FullImageName string
OutputFile string
}
type anchoreDetails struct {
URL string
Username string
Password string
}
var (
StepPostBuildLong = templates.LongDesc(`
This pipeline step performs post build actions such as CVE analysis
`)
StepPostBuildExample = templates.Examples(`
jx step post build
`)
)
const podAnnotations = `
podAnnotations:
jenkins-x.io/cve-image-id: %s
`
func NewCmdStepPostBuild(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := StepPostBuildOptions{
StepOptions: StepOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
},
}
cmd := &cobra.Command{
Use: "build",
Short: "Performs post build actions in a pipeline",
Long: StepPostBuildLong,
Example: StepPostBuildExample,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
cmd.Flags().StringVarP(&options.FullImageName, "image", "", "", "The full image name to be analysed including the registry prefix")
return cmd
}
func (o *StepPostBuildOptions) Run() error {
_, err := o.KubeClient()
if err != nil {
return fmt.Errorf("error connecting to Kubernetes cluster: %v", err)
}
// let's try and add image to CVE provider
err = o.addImageCVEProvider()
if err != nil {
return fmt.Errorf("error adding image to CVE provider: %v", err)
}
return nil
}
func (o *StepPostBuildOptions) addImageCVEProvider() error {
if o.FullImageName == "" {
return util.MissingOption("image")
}
client, err := o.KubeClient()
if err != nil {
return err
}
present, err := services.IsServicePresent(client, kube.AddonServices[defaultAnchoreName], o.currentNamespace)
if err != nil || !present {
log.Infof("no CVE provider running in the current %s namespace so skip adding image to be analysed", o.currentNamespace)
return nil
}
cveProviderHost := os.Getenv("JENKINS_X_DOCKER_REGISTRY_SERVICE_HOST")
if cveProviderHost == "" {
return fmt.Errorf("no JENKINS_X_DOCKER_REGISTRY_SERVICE_HOST env var found")
}
cveProviderPort := os.Getenv("JENKINS_X_DOCKER_REGISTRY_SERVICE_PORT")
if cveProviderPort == "" {
return fmt.Errorf("no JENKINS_X_DOCKER_REGISTRY_SERVICE_PORT env var found")
}
log.Infof("adding image %s to CVE provider\n", o.FullImageName)
imageID, err := o.addImageToAnchore()
if err != nil {
return fmt.Errorf("failed to add image %s to anchore engine: %v\n", o.FullImageName, err)
}
err = o.addImageIDtoHelmValues(imageID)
if err != nil {
return fmt.Errorf("failed to add image id %s to helm values: %v\n", imageID, err)
}
// todo use image id to annotate pods during environments helm install / upgrade
// todo then we can use `jx get cve --env staging` and list all CVEs for an environment
log.Infof("anchore image is %s \n", imageID)
return nil
}
func (o *StepPostBuildOptions) addImageToAnchore() (string, error) {
a, err := o.getAnchoreDetails()
if err != nil {
return "", err
}
cmd := exec.Command("anchore-cli", "image", "add", o.FullImageName)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, "ANCHORE_CLI_USER="+a.Username)
cmd.Env = append(cmd.Env, "ANCHORE_CLI_PASS="+a.Password)
cmd.Env = append(cmd.Env, "ANCHORE_CLI_URL="+a.URL)
data, err := cmd.CombinedOutput()
text := string(data)
if err != nil {
return "", err
}
scanner := bufio.NewScanner(strings.NewReader(text))
var imageID string
for scanner.Scan() {
if strings.HasPrefix(scanner.Text(), "Image ID:") {
imageID = strings.Replace(scanner.Text(), "Image ID:", "", -1)
imageID = strings.TrimSpace(imageID)
break
}
}
if imageID == "" {
return "", fmt.Errorf("no Image ID returned from Anchore")
}
return imageID, nil
}
func (o *StepPostBuildOptions) getAnchoreDetails() (anchoreDetails, error) {
var a anchoreDetails
secretsList, err := o.LoadPipelineSecrets(kube.ValueKindAddon, kube.ValueKindCVE)
if err != nil {
return a, err
}
if secretsList == nil || len(secretsList.Items) == 0 {
return a, fmt.Errorf("no addon secrets found for kind cve")
}
if len(secretsList.Items) > 1 {
return a, fmt.Errorf("multiple addon secrets found for kind cve, please clean up and leave only one")
}
s := secretsList.Items[0]
a.URL = s.Annotations[kube.AnnotationURL]
if a.URL != "" && s.Data != nil {
a.Username = string(s.Data[kube.SecretDataUsername])
a.Password = string(s.Data[kube.SecretDataPassword])
} else {
return a, fmt.Errorf("secret %s is missing URL or data", s.Name)
}
return a, nil
}
func (o *StepPostBuildOptions) addImageIDtoHelmValues(imageID string) error {
pwd, err := os.Getwd()
if err != nil {
return err
}
charts := filepath.Join(pwd, "charts")
exists, err := util.FileExists(charts)
if err != nil {
return err
}
if !exists {
return fmt.Errorf("no charts folder found are you in the root folder of your project?")
}
// loop through all directories and if there's a values.yaml add image id to the end
err = filepath.Walk(charts, func(path string, f os.FileInfo, err error) error {
if f.IsDir() {
values := filepath.Join(path, "values.yaml")
valuesExist, err := util.FileExists(values)
if err != nil {
return err
}
if valuesExist {
f, err := os.OpenFile(values, os.O_APPEND|os.O_WRONLY, 0600)
if err != nil {
return err
}
defer f.Close()
if _, err = f.WriteString(fmt.Sprintf(podAnnotations, imageID)); err != nil {
return err
}
}
}
return nil
})
if err != nil {
return err
}
return nil
}