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release_versions.go
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release_versions.go
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package framework
import (
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/pkg/errors"
"github.com/aws/eks-anywhere/internal/pkg/files"
"github.com/aws/eks-anywhere/pkg/logger"
"github.com/aws/eks-anywhere/pkg/manifests/releases"
"github.com/aws/eks-anywhere/pkg/semver"
"github.com/aws/eks-anywhere/pkg/validations"
releasev1alpha1 "github.com/aws/eks-anywhere/release/api/v1alpha1"
)
const (
prodReleasesManifest = "https://anywhere-assets.eks.amazonaws.com/releases/eks-a/manifest.yaml"
releaseBinaryName = "eksctl-anywhere"
BranchNameEnvVar = "T_BRANCH_NAME"
defaultTestBranch = "main"
)
// GetLatestMinorReleaseFromTestBranch inspects the T_BRANCH_NAME environment variable for a
// branch to retrieve the latest released CLI version. If T_BRANCH_NAME is main, it returns
// the latest minor release.
//
// If T_BRANCH_NAME is not main, it expects it to be of the format release-<major>.<minor>
// and will use the <major>.<minor> to retrieve the previous minor release. For example, if the
// release branch is release-0.2 it will retrieve the latest 0.1 release.
func GetLatestMinorReleaseFromTestBranch() (*releasev1alpha1.EksARelease, error) {
testBranch := testBranch()
if testBranch == "main" {
return GetLatestMinorReleaseFromMain()
}
testBranchFirstSemver, err := semverForReleaseBranch(testBranch)
if err != nil {
return nil, err
}
return GetPreviousMinorReleaseFromVersion(testBranchFirstSemver)
}
// GetPreviousMinorReleaseFromTestBranch inspects the T_BRANCH_NAME environment variable for a
// branch to retrieve the previous latest minor released CLI version. If T_BRANCH_NAME is main, it returns
// the previous minor version which is one minor version below the latest minor version that is released.
//
// If T_BRANCH_NAME is not main, it expects it to be of the format release-<major>.<minor>
// and will use the <major>.<minor> to retrieve the previous minor release. For example, if the
// release branch is release-0.2 it will retrieve the latest 0.1 release.
func GetPreviousMinorReleaseFromTestBranch() (*releasev1alpha1.EksARelease, error) {
testBranch := testBranch()
var prevLatestMinorRelease *releasev1alpha1.EksARelease
latestMinorRelease, err := GetLatestMinorReleaseFromTestBranch()
if err != nil {
return nil, fmt.Errorf("getting latest minor release: %v", err)
}
// For release branch just return the latest minor release
if testBranch != "main" {
return latestMinorRelease, nil
}
semLatestMinorRelease, err := semver.New(latestMinorRelease.Version)
if err != nil {
return nil, err
}
prevLatestMinorRelease, err = GetPreviousMinorReleaseFromVersion(semLatestMinorRelease)
if err != nil {
return nil, err
}
return prevLatestMinorRelease, nil
}
// EKSAVersionForTestBinary returns the "future" EKS-A version for the tested binary based on the TEST_BRANCH name.
// For main, it returns the next minor version.
// For a release branch, it returns the next path version for that release minor version.
func EKSAVersionForTestBinary() (string, error) {
if testBranch := testBranch(); testBranch != "main" {
return eksaVersionForReleaseBranch(testBranch)
}
return eksaVersionForMain()
}
func eksaVersionForMain() (string, error) {
latestRelease, err := GetLatestMinorReleaseFromMain()
if err != nil {
return "", err
}
latestReleaseSemVer, err := semver.New(latestRelease.Version)
if err != nil {
return "", errors.Wrapf(err, "parsing version for release %s", latestRelease.Version)
}
localVersion := *latestReleaseSemVer
localVersion.Patch = 0
localVersion.Minor++
return localVersion.String(), nil
}
func eksaVersionForReleaseBranch(branch string) (string, error) {
semVer, err := semverForReleaseBranch(branch)
if err != nil {
return "", err
}
releases, err := prodReleases()
if err != nil {
return "", err
}
var latestReleaseSemVer *semver.Version
latestRelease := GetLatestPatchRelease(releases, semVer)
if latestRelease != nil {
latestReleaseSemVer, err = semver.New(latestRelease.Version)
if err != nil {
return "", errors.Wrapf(err, "parsing version for release %s", latestRelease.Version)
}
localVersion := *latestReleaseSemVer
localVersion.Patch++
} else {
// if no patch version for the release branch, this is an unreleased minor version
// so the next version will be x.x.0
latestReleaseSemVer = semVer
}
return latestReleaseSemVer.String(), nil
}
func getLatestDevRelease() (*releasev1alpha1.EksARelease, error) {
releases, err := devReleases()
if err != nil {
return nil, err
}
return latestRelease(releases)
}
func GetLatestMinorReleaseBinaryFromMain() (binaryPath string, err error) {
return getBinaryFromRelease(GetLatestMinorReleaseFromMain())
}
func GetLatestMinorReleaseFromMain() (*releasev1alpha1.EksARelease, error) {
releases, err := prodReleases()
if err != nil {
return nil, err
}
return latestRelease(releases)
}
func semverForReleaseBranch(branch string) (*semver.Version, error) {
majorMinor := getMajorMinorFromTestBranch(branch)
testBranchFirstVersion := fmt.Sprintf("%s.0", majorMinor)
testBranchFirstSemver, err := semver.New(testBranchFirstVersion)
if err != nil {
return nil, fmt.Errorf("can't extract semver from release branch [%s]: %v", branch, err)
}
return testBranchFirstSemver, nil
}
func latestRelease(releases *releasev1alpha1.Release) (*releasev1alpha1.EksARelease, error) {
var latestRelease *releasev1alpha1.EksARelease
for _, release := range releases.Spec.Releases {
if release.Version == releases.Spec.LatestVersion {
latestRelease = &release
break
}
}
if latestRelease == nil {
return nil, fmt.Errorf("releases manifest doesn't contain latest release %s", releases.Spec.LatestVersion)
}
return latestRelease, nil
}
// GetPreviousMinorReleaseFromVersion calculates the previous minor release by decrementing the
// version minor number, then retrieves the latest <major>.<minor>.<patch> for the calculated
// version.
func GetPreviousMinorReleaseFromVersion(version *semver.Version) (*releasev1alpha1.EksARelease, error) {
releases, err := prodReleases()
if err != nil {
return nil, err
}
release, err := getLatestPrevMinorRelease(releases, version)
if err != nil {
return nil, err
}
return release, nil
}
func GetReleaseBinaryFromVersion(version *semver.Version) (binaryPath string, err error) {
releases, err := prodReleases()
if err != nil {
return "", err
}
var targetVersion *releasev1alpha1.EksARelease
for _, release := range releases.Spec.Releases {
releaseVersion := newVersion(release.Version)
if releaseVersion == version {
targetVersion = &release
}
}
binaryPath, err = getBinary(targetVersion)
if err != nil {
return "", fmt.Errorf("failed getting binary for specified version %s: %s", version.String(), err)
}
return binaryPath, nil
}
// NewEKSAReleasePackagedBinary builds a new EKSAReleasePackagedBinary.
func NewEKSAReleasePackagedBinary(release *releasev1alpha1.EksARelease) *EKSAReleasePackagedBinary {
return &EKSAReleasePackagedBinary{release}
}
// EKSAReleasePackagedBinary decorates an EKSA release with extra functionality.
type EKSAReleasePackagedBinary struct {
*releasev1alpha1.EksARelease
}
// BinaryPath implements EKSAPackagedBinary.
func (b *EKSAReleasePackagedBinary) BinaryPath() (string, error) {
return getBinary(b.EksARelease)
}
// Version returns the eks-a release version.
func (b *EKSAReleasePackagedBinary) Version() string {
return b.EksARelease.Version
}
func getBinary(release *releasev1alpha1.EksARelease) (string, error) {
r := platformAwareRelease{release}
latestReleaseBinaryFolder := filepath.Join("bin", r.Version)
latestReleaseBinaryPath := filepath.Join(latestReleaseBinaryFolder, releaseBinaryName)
if !validations.FileExists(latestReleaseBinaryPath) {
logger.Info("Downloading binary for EKS-A release", r.Version, latestReleaseBinaryPath)
err := os.MkdirAll(latestReleaseBinaryFolder, os.ModePerm)
if err != nil {
return "", fmt.Errorf("failed creating directory ./%s: %s", latestReleaseBinaryFolder, err)
}
binaryUri, err := r.binaryUri()
if err != nil {
return "", fmt.Errorf("determining URI for EKS-A binary: %v", err)
}
err = files.GzipFileDownloadExtract(binaryUri, releaseBinaryName, latestReleaseBinaryFolder)
if err != nil {
return "", fmt.Errorf("failed extracting binary for EKS-A release [%s] to path ./%s: %s", r.Version, latestReleaseBinaryPath, err)
}
}
return latestReleaseBinaryPath, nil
}
func getBinaryFromRelease(release *releasev1alpha1.EksARelease, chainedErr error) (binaryPath string, err error) {
if chainedErr != nil {
return "", err
}
binaryPath, err = getBinary(release)
if err != nil {
return "", fmt.Errorf("failed getting binary for release [%s]: %v", release.Version, err)
}
return binaryPath, nil
}
type platformAwareRelease struct {
*releasev1alpha1.EksARelease
}
func (p *platformAwareRelease) binaryUri() (binaryUri string, err error) {
r := runtime.GOOS
switch r {
case "darwin":
return p.EksABinary.DarwinBinary.URI, nil
case "linux":
return p.EksABinary.LinuxBinary.URI, nil
default:
return "", fmt.Errorf("unsupported runtime %s", r)
}
}
func prodReleases() (release *releasev1alpha1.Release, err error) {
return getReleases(prodReleasesManifest)
}
func devReleases() (release *releasev1alpha1.Release, err error) {
return getReleases(devReleaseURL())
}
func getReleases(url string) (release *releasev1alpha1.Release, err error) {
reader := newFileReader()
logger.Info("Reading release manifest", "manifest", url)
releases, err := releases.ReadReleasesFromURL(reader, url)
if err != nil {
return nil, err
}
return releases, nil
}
func getLatestPrevMinorRelease(releases *releasev1alpha1.Release, releaseBranchVersion *semver.Version) (*releasev1alpha1.EksARelease, error) {
targetRelease := &releasev1alpha1.EksARelease{
Version: "",
BundleManifestUrl: "",
}
latestPrevMinorReleaseVersion := newVersion("0.0.0")
for _, release := range releases.Spec.Releases {
releaseVersion := newVersion(release.Version)
if releaseVersion.LessThan(releaseBranchVersion) && releaseVersion.Minor != releaseBranchVersion.Minor && releaseVersion.GreaterThan(latestPrevMinorReleaseVersion) {
*targetRelease = release
latestPrevMinorReleaseVersion = releaseVersion
}
}
if targetRelease.Version == "" {
return nil, fmt.Errorf("releases manifest doesn't contain a version of the previous minor release")
}
return targetRelease, nil
}
// GetLatestPatchRelease return the latest patch version for the major.minor release version.
// If releases doesn't contain a major.minor for version, it returns nil.
func GetLatestPatchRelease(releases *releasev1alpha1.Release, version *semver.Version) *releasev1alpha1.EksARelease {
var release *releasev1alpha1.EksARelease
current := newVersion("0.0.0")
for _, r := range releases.Spec.Releases {
r := r
rv := newVersion(r.Version)
if rv.SameMajor(version) && rv.SameMinor(version) && rv.GreaterThan(current) {
release = &r
current = version
}
}
return release
}
// GetLatestProductionPatchRelease retrieves the latest patch release for version from the
// production release manifest. If the production release manifest does not contain a release for
// the major.minor of version it errors.
func GetLatestProductionPatchRelease(version *semver.Version) (*releasev1alpha1.EksARelease, error) {
releases, err := prodReleases()
if err != nil {
return nil, err
}
release := GetLatestPatchRelease(releases, version)
if release == nil {
return nil, fmt.Errorf("no release found in the production release bundle for %v", version)
}
return release, nil
}
func getMajorMinorFromTestBranch(testBranch string) string {
return strings.TrimPrefix(testBranch, "release-")
}
func devReleaseURL() string {
testBranch := testBranch()
if testBranch == "main" {
return "https://dev-release-assets.eks-anywhere.model-rocket.aws.dev/eks-a-release.yaml"
}
return fmt.Sprintf("https://dev-release-assets.eks-anywhere.model-rocket.aws.dev/%s/eks-a-release.yaml", testBranch)
}
func testBranch() string {
return getEnvWithDefault(BranchNameEnvVar, defaultTestBranch)
}