Merge pull request #10486 from gridai/fix-install-leak

Fix install memory/goroutine leak

pkg/action/install.go

@@ -344,8 +344,10 @@ func (i *Install) RunWithContext(ctx context.Context, chrt *chart.Chart, vals ma
 		return rel, err
 	}
 	rChan := make(chan resultMessage)
+	doneChan := make(chan struct{})
+	defer close(doneChan)
 	go i.performInstall(rChan, rel, toBeAdopted, resources)
-	go i.handleContext(ctx, rChan, rel)
+	go i.handleContext(ctx, rChan, doneChan, rel)
 	result := <-rChan
 	//start preformInstall go routine
 	return result.r, result.e
@@ -416,12 +418,14 @@ func (i *Install) performInstall(c chan<- resultMessage, rel *release.Release, t
 
 	i.reportToRun(c, rel, nil)
 }
-func (i *Install) handleContext(ctx context.Context, c chan<- resultMessage, rel *release.Release) {
-	go func() {
-		<-ctx.Done()
+func (i *Install) handleContext(ctx context.Context, c chan<- resultMessage, done chan struct{}, rel *release.Release) {
+	select {
+	case <-ctx.Done():
 		err := ctx.Err()
 		i.reportToRun(c, rel, err)
-	}()
+	case <-done:
+		return
+	}
 }
 func (i *Install) reportToRun(c chan<- resultMessage, rel *release.Release, err error) {
 	i.Lock.Lock()

pkg/action/install_test.go

@@ -29,6 +29,7 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"helm.sh/helm/v3/internal/test"
 	"helm.sh/helm/v3/pkg/chart"
@@ -56,9 +57,12 @@ func installAction(t *testing.T) *Install {
 
 func TestInstallRelease(t *testing.T) {
 	is := assert.New(t)
+	req := require.New(t)
+
 	instAction := installAction(t)
 	vals := map[string]interface{}{}
-	res, err := instAction.Run(buildChart(), vals)
+	ctx, done := context.WithCancel(context.Background())
+	res, err := instAction.RunWithContext(ctx, buildChart(), vals)
 	if err != nil {
 		t.Fatalf("Failed install: %s", err)
 	}
@@ -77,6 +81,14 @@ func TestInstallRelease(t *testing.T) {
 	is.NotEqual(len(rel.Manifest), 0)
 	is.Contains(rel.Manifest, "---\n# Source: hello/templates/hello\nhello: world")
 	is.Equal(rel.Info.Description, "Install complete")
+
+	// Detecting previous bug where context termination after successful release
+	// caused release to fail.
+	done()
+	time.Sleep(time.Millisecond * 100)
+	lastRelease, err := instAction.cfg.Releases.Last(rel.Name)
+	req.NoError(err)
+	is.Equal(lastRelease.Info.Status, release.StatusDeployed)
 }
 
 func TestInstallReleaseWithValues(t *testing.T) {

pkg/action/upgrade.go

@@ -326,11 +326,11 @@ func (u *Upgrade) performUpgrade(ctx context.Context, originalRelease, upgradedR
 	rChan := make(chan resultMessage)
 	ctxChan := make(chan resultMessage)
 	doneChan := make(chan interface{})
+	defer close(doneChan)
 	go u.releasingUpgrade(rChan, upgradedRelease, current, target, originalRelease)
 	go u.handleContext(ctx, doneChan, ctxChan, upgradedRelease)
 	select {
 	case result := <-rChan:
-		doneChan <- true
 		return result.r, result.e
 	case result := <-ctxChan:
 		return result.r, result.e
@@ -351,7 +351,6 @@ func (u *Upgrade) reportToPerformUpgrade(c chan<- resultMessage, rel *release.Re
 
 // Setup listener for SIGINT and SIGTERM
 func (u *Upgrade) handleContext(ctx context.Context, done chan interface{}, c chan<- resultMessage, upgradedRelease *release.Release) {
-	go func() {
 	select {
 	case <-ctx.Done():
 		err := ctx.Err()
@@ -361,7 +360,6 @@ func (u *Upgrade) handleContext(ctx context.Context, done chan interface{}, c ch
 	case <-done:
 		return
 	}
-	}()
 }
 func (u *Upgrade) releasingUpgrade(c chan<- resultMessage, upgradedRelease *release.Release, current kube.ResourceList, target kube.ResourceList, originalRelease *release.Release) {
 	// pre-upgrade hooks

pkg/action/upgrade_test.go

@@ -40,6 +40,33 @@ func upgradeAction(t *testing.T) *Upgrade {
 	return upAction
 }
 
+func TestUpgradeRelease_Success(t *testing.T) {
+	is := assert.New(t)
+	req := require.New(t)
+
+	upAction := upgradeAction(t)
+	rel := releaseStub()
+	rel.Name = "previous-release"
+	rel.Info.Status = release.StatusDeployed
+	req.NoError(upAction.cfg.Releases.Create(rel))
+
+	upAction.Wait = true
+	vals := map[string]interface{}{}
+
+	ctx, done := context.WithCancel(context.Background())
+	res, err := upAction.RunWithContext(ctx, rel.Name, buildChart(), vals)
+	done()
+	req.NoError(err)
+	is.Equal(res.Info.Status, release.StatusDeployed)
+
+	// Detecting previous bug where context termination after successful release
+	// caused release to fail.
+	time.Sleep(time.Millisecond * 100)
+	lastRelease, err := upAction.cfg.Releases.Last(rel.Name)
+	req.NoError(err)
+	is.Equal(lastRelease.Info.Status, release.StatusDeployed)
+}
+
 func TestUpgradeRelease_Wait(t *testing.T) {
 	is := assert.New(t)
 	req := require.New(t)