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fluxGit.go
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fluxGit.go
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package e2e
import (
"context"
"encoding/base64"
"fmt"
"log"
"os"
"regexp"
"strings"
"time"
"github.com/go-logr/logr"
"github.com/aws/eks-anywhere/internal/pkg/ssm"
"github.com/aws/eks-anywhere/pkg/api/v1alpha1"
"github.com/aws/eks-anywhere/pkg/config"
"github.com/aws/eks-anywhere/pkg/git"
"github.com/aws/eks-anywhere/pkg/retrier"
e2etests "github.com/aws/eks-anywhere/test/framework"
)
type s3Files struct {
key, dstPath string
permission int
}
type fileFromBytes struct {
dstPath string
permission int
content []byte
}
func (f *fileFromBytes) contentString() string {
return string(f.content)
}
func (e *E2ESession) setupFluxGitEnv(testRegex string) error {
re := regexp.MustCompile(`^.*GitFlux.*$`)
if !re.MatchString(testRegex) {
return nil
}
requiredEnvVars := e2etests.RequiredFluxGitCreateRepoEnvVars()
for _, eVar := range requiredEnvVars {
if val, ok := os.LookupEnv(eVar); ok {
e.testEnvVars[eVar] = val
}
}
repo, err := e.setupGithubRepo()
if err != nil {
return fmt.Errorf("setting up github repo for test: %v", err)
}
// add the newly generated repository to the test
e.testEnvVars[e2etests.GitRepoSshUrl] = gitRepoSshUrl(repo.Name, e.testEnvVars[e2etests.GithubUserVar])
for _, file := range buildFluxGitFiles(e.testEnvVars) {
if err := e.downloadFileInInstance(file); err != nil {
return fmt.Errorf("downloading flux-git file to instance: %v", err)
}
}
err = e.setUpSshAgent(e.testEnvVars[config.EksaGitPrivateKeyTokenEnv])
if err != nil {
return fmt.Errorf("setting up ssh agent on remote instance: %v", err)
}
return nil
}
func buildFluxGitFiles(envVars map[string]string) []s3Files {
return []s3Files{
{
key: "git-flux/known_hosts",
dstPath: envVars[config.EksaGitKnownHostsFileEnv],
permission: 644,
},
}
}
func (e *E2ESession) decodeAndWriteFileToInstance(file fileFromBytes) error {
e.logger.V(1).Info("Writing bytes to file in instance", "file", file.dstPath)
command := fmt.Sprintf("echo '%s' | base64 -d >> %s && chmod %d %[2]s", file.contentString(), file.dstPath, file.permission)
if err := ssm.Run(e.session, logr.Discard(), e.instanceId, command, ssmTimeout); err != nil {
return fmt.Errorf("writing file in instance: %v", err)
}
e.logger.V(1).Info("Successfully decoded and wrote file", "file", file.dstPath)
return nil
}
func (e *E2ESession) downloadFileInInstance(file s3Files) error {
e.logger.V(1).Info("Downloading from s3 in instance", "file", file.key)
command := fmt.Sprintf("aws s3 cp s3://%s/%s %s && chmod %d %[3]s", e.storageBucket, file.key, file.dstPath, file.permission)
if err := ssm.Run(e.session, logr.Discard(), e.instanceId, command, ssmTimeout); err != nil {
return fmt.Errorf("downloading file in instance: %v", err)
}
e.logger.V(1).Info("Successfully downloaded file", "file", file.key)
return nil
}
func (e *E2ESession) setUpSshAgent(privateKeyFile string) error {
command := fmt.Sprintf("eval $(ssh-agent -s) ssh-add %s", privateKeyFile)
if err := ssm.Run(e.session, logr.Discard(), e.instanceId, command, ssmTimeout); err != nil {
return fmt.Errorf("starting SSH agent on instance: %v", err)
}
e.logger.V(1).Info("Successfully started SSH agent on instance")
return nil
}
func (e *E2ESession) setupGithubRepo() (*git.Repository, error) {
e.logger.V(1).Info("setting up Github repo for test")
owner := e.testEnvVars[e2etests.GithubUserVar]
repo := strings.ReplaceAll(e.jobId, ":", "-") // Github API urls get funky if you use ":" in the repo name
c := &v1alpha1.GithubProviderConfig{
Owner: owner,
Repository: repo,
Personal: true,
}
ctx := context.Background()
g, err := e.TestGithubClient(ctx, e.testEnvVars[e2etests.GithubTokenVar], c.Owner, c.Repository, c.Personal)
if err != nil {
return nil, fmt.Errorf("couldn't create Github client for test setup: %v", err)
}
// Create a new github repository for the tests to run on
o := git.CreateRepoOpts{
Name: repo,
Owner: owner,
Description: fmt.Sprintf("repository for use with E2E test job %v", e.jobId),
Personal: true,
AutoInit: true,
}
r, err := g.CreateRepo(ctx, o)
if err != nil {
return nil, fmt.Errorf("creating repository in Github for test: %v", err)
}
pk, pub, err := e.generateKeyPairForGitTest()
if err != nil {
return nil, fmt.Errorf("generating key pair for git tests: %v", err)
}
e.logger.Info("Create Deploy Key Configuration for Git Flux tests", "owner", owner, "repo", repo)
// Add the newly generated public key to the newly created repository as a deploy key
ko := git.AddDeployKeyOpts{
Owner: owner,
Repository: repo,
Key: string(pub),
Title: fmt.Sprintf("Test key created for job %v", e.jobId),
ReadOnly: false,
}
// Newly generated repositories may take some time to show up in the GitHub API; retry a few times to get around this
err = retrier.Retry(10, time.Second*10, func() error {
err = g.AddDeployKeyToRepo(ctx, ko)
if err != nil {
return fmt.Errorf("couldn't add deploy key to repo: %v", err)
}
return nil
})
if err != nil {
return r, err
}
encodedPK := encodePrivateKey(pk)
// Generate a PEM file from the private key and write it instance at the user-provided path
pkFile := fileFromBytes{
dstPath: e.testEnvVars[config.EksaGitPrivateKeyTokenEnv],
permission: 600,
content: encodedPK,
}
err = e.decodeAndWriteFileToInstance(pkFile)
if err != nil {
return nil, fmt.Errorf("writing private key file to instance: %v", err)
}
return r, err
}
func encodePrivateKey(privateKey []byte) []byte {
b64EncodedPK := make([]byte, base64.StdEncoding.EncodedLen(len(privateKey)))
base64.StdEncoding.Encode(b64EncodedPK, privateKey)
return b64EncodedPK
}
func (e *E2ESession) generateKeyPairForGitTest() (privateKeyBytes, publicKeyBytes []byte, err error) {
k, err := generateKeyPairEcdsa()
if err != nil {
return nil, nil, err
}
privateKeyBytes, err = pemFromPrivateKeyEcdsa(k)
if err != nil {
return nil, nil, err
}
publicKeyBytes, err = pubFromPrivateKeyEcdsa(k)
if err != nil {
return nil, nil, err
}
log.Println("Public key generated")
return privateKeyBytes, publicKeyBytes, nil
}
func gitRepoSshUrl(repo, owner string) string {
t := "ssh://git@github.com/%s/%s.git"
return fmt.Sprintf(t, owner, repo)
}