Use k8s Duration instead of string for build timeout

pkg/apis/build/v1alpha1/build_types.go

@@ -86,7 +86,7 @@ type BuildSpec struct {
 	// Time after which the build times out. Defaults to 10 minutes.
 	// Specified build timeout should be less than 24h.
 	// Refer Go's ParseDuration documentation for expected format: https://golang.org/pkg/time/#ParseDuration
-	Timeout string `json:"timeout,omitempty"`
+	Timeout metav1.Duration `json:"timeout,omitempty"`
 
 	// If specified, the pod's scheduling constraints
 	// +optional

pkg/builder/interface.go

@@ -20,6 +20,7 @@ import (
 	"time"
 
 	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	v1alpha1 "github.com/knative/build/pkg/apis/build/v1alpha1"
 )
@@ -79,23 +80,19 @@ func IsDone(status *v1alpha1.BuildStatus) bool {
 
 // IsTimeout returns true if the build's execution time is greater than
 // specified build spec timeout.
-func IsTimeout(status *v1alpha1.BuildStatus, buildTimeout string) bool {
+func IsTimeout(status *v1alpha1.BuildStatus, buildTimeout metav1.Duration) bool {
 	var timeout time.Duration
 	var defaultTimeout = 10 * time.Minute
-	var err error
 
 	if status == nil {
 		return false
 	}
 
-	if buildTimeout == "" {
+	if buildTimeout.Duration == 0 {
 		// Set default timeout to 10 minute if build timeout is not set
 		timeout = defaultTimeout
 	} else {
-		timeout, err = time.ParseDuration(buildTimeout)
-		if err != nil {
-			return false
-		}
+		timeout = buildTimeout.Duration
 	}
 
 	// If build has not started timeout, startTime should be zero.

pkg/controller/build/controller.go

@@ -280,7 +280,7 @@ func (c *Controller) syncHandler(key string) error {
 			// Check if build has timed out
 			if builder.IsTimeout(&build.Status, build.Spec.Timeout) {
 				//cleanup operation and update status
-				timeoutMsg := fmt.Sprintf("Build %q failed to finish within %q", build.Name, build.Spec.Timeout)
+				timeoutMsg := fmt.Sprintf("Build %q failed to finish within %q", build.Name, build.Spec.Timeout.Duration.String())
 
 				if err := op.Terminate(); err != nil {
 					c.logger.Errorf("Failed to terminate pod: %v", err)

pkg/controller/build/controller_test.go

@@ -67,7 +67,7 @@ func newBuild(name string) *v1alpha1.Build {
 			Namespace: metav1.NamespaceDefault,
 		},
 		Spec: v1alpha1.BuildSpec{
-			Timeout: "20m",
+			Timeout: metav1.Duration{Duration: 20 * time.Minute},
 		},
 	}
 }
@@ -237,7 +237,7 @@ func TestTimeoutFlows(t *testing.T) {
 		t.Errorf("Error parsing duration")
 	}
 
-	build.Spec.Timeout = "1s"
+	build.Spec.Timeout = metav1.Duration{Duration: 1 * time.Second}
 
 	f := &fixture{
 		t:           t,

pkg/webhook/build.go

@@ -237,19 +237,13 @@ func validationError(reason, format string, fmtArgs ...interface{}) error {
 	}
 }
 
-func validateTimeout(timeout string) error {
+func validateTimeout(timeout metav1.Duration) error {
 	maxTimeout := time.Duration(24 * time.Hour)
 
-	if timeout == "" {
-		return nil
-	} else {
-		timeoutDuration, err := time.ParseDuration(timeout)
-		if err != nil {
-			return validationError("InvalidTimeFormat", "invalid build timeout %q err %#v. Refer https://golang.org/pkg/time/#ParseDuration for time format documentation", timeout, err)
-		}
-		if timeoutDuration > maxTimeout {
-			return validationError("InvalidTimeout", "build timeout exceeded 24h")
-		}
+	if timeout.Duration > maxTimeout {
+		return validationError("InvalidTimeout", "build timeout exceeded 24h")
+	} else if timeout.Duration < 0 {
+		return validationError("InvalidTimeFormat", "build timeout should be greater than 0")
 	}
 	return nil
 }

pkg/webhook/webhook_test.go

@@ -21,6 +21,7 @@ import (
 	"encoding/json"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/mattbaird/jsonpatch"
@@ -207,21 +208,21 @@ func TestValidateBuild(t *testing.T) {
 			},
 		},
 	}, {
-		reason: "invalid build timeout",
+		reason: "negative build timeout",
 		build: &v1alpha1.Build{
 			Spec: v1alpha1.BuildSpec{
-				Timeout: "garbagetimeout",
+				Timeout: metav1.Duration{Duration: -48 * time.Hour},
 				Steps: []corev1.Container{{
 					Name:  "foo",
 					Image: "gcr.io/foo-bar/baz:latest",
 				}},
 			},
-		},
+		},	
 	}, {
 		reason: "maximum timeout",
 		build: &v1alpha1.Build{
 			Spec: v1alpha1.BuildSpec{
-				Timeout: "48h",
+				Timeout: metav1.Duration{Duration: 48 * time.Hour},
 				Steps: []corev1.Container{{
 					Name:  "foo",
 					Image: "gcr.io/foo-bar/baz:latest",
@@ -231,7 +232,7 @@ func TestValidateBuild(t *testing.T) {
 	}, {
 		build: &v1alpha1.Build{
 			Spec: v1alpha1.BuildSpec{
-				Timeout: "1m",
+				Timeout: metav1.Duration{Duration: 5 * time.Minute},
 				Steps: []corev1.Container{{
 					Name:  "foo",
 					Image: "gcr.io/foo-bar/baz:latest",

test/e2e/simple_test.go

@@ -70,7 +70,7 @@ func TestSimpleBuild(t *testing.T) {
 			Name:      buildName,
 		},
 		Spec: v1alpha1.BuildSpec{
-			Timeout: "40s",
+			Timeout: metav1.Duration{Duration: 40 * time.Second},
 			Steps: []corev1.Container{{
 				Image: "busybox",
 				Args:  []string{"echo", "simple"},
@@ -132,7 +132,7 @@ func TestBuildLowTimeout(t *testing.T) {
 			Name:      buildName,
 		},
 		Spec: v1alpha1.BuildSpec{
-			Timeout: buildTimeout.String(),
+			Timeout: metav1.Duration{Duration: buildTimeout},
 			Steps: []corev1.Container{{
 				Name:    "lowtimeoutstep",
 				Image:   "ubuntu",