pkg/util: move trace.go to k8s.io/apiserver/pkg/util/trace

pkg/controller/replication/replication_controller.go

@@ -32,6 +32,7 @@ import (
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/wait"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/kubernetes/pkg/api/v1"
 	"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
@@ -40,7 +41,6 @@ import (
 	"k8s.io/kubernetes/pkg/client/record"
 	"k8s.io/kubernetes/pkg/controller"
 	"k8s.io/kubernetes/pkg/controller/informers"
-	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/util/metrics"
 	"k8s.io/kubernetes/pkg/util/workqueue"
 )
@@ -596,7 +596,7 @@ func (rm *ReplicationManager) manageReplicas(filteredPods []*v1.Pod, rc *v1.Repl
 // it did not expect to see any more of its pods created or deleted. This function is not meant to be invoked
 // concurrently with the same key.
 func (rm *ReplicationManager) syncReplicationController(key string) error {
-	trace := util.NewTrace("syncReplicationController: " + key)
+	trace := utiltrace.New("syncReplicationController: " + key)
 	defer trace.LogIfLong(250 * time.Millisecond)
 
 	startTime := time.Now()

pkg/genericapiserver/endpoints/handlers/rest.go

@@ -27,6 +27,9 @@ import (
 	"strings"
 	"time"
 
+	"github.com/emicklei/go-restful"
+	"github.com/golang/glog"
+
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
@@ -40,12 +43,9 @@ import (
 	"k8s.io/apiserver/pkg/admission"
 	"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"
 	"k8s.io/apiserver/pkg/endpoints/request"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/kubernetes/pkg/genericapiserver/endpoints/handlers/responsewriters"
 	"k8s.io/kubernetes/pkg/genericapiserver/registry/rest"
-	"k8s.io/kubernetes/pkg/util"
-
-	"github.com/emicklei/go-restful"
-	"github.com/golang/glog"
 )
 
 // ContextFunc returns a Context given a request - a context must be returned
@@ -133,7 +133,7 @@ func GetResource(r rest.Getter, e rest.Exporter, scope RequestScope) restful.Rou
 	return getResourceHandler(scope,
 		func(ctx request.Context, name string, req *restful.Request) (runtime.Object, error) {
 			// For performance tracking purposes.
-			trace := util.NewTrace("Get " + req.Request.URL.Path)
+			trace := utiltrace.New("Get " + req.Request.URL.Path)
 			defer trace.LogIfLong(500 * time.Millisecond)
 
 			// check for export
@@ -245,7 +245,7 @@ func (r *responder) Error(err error) {
 func ListResource(r rest.Lister, rw rest.Watcher, scope RequestScope, forceWatch bool, minRequestTimeout time.Duration) restful.RouteFunction {
 	return func(req *restful.Request, res *restful.Response) {
 		// For performance tracking purposes.
-		trace := util.NewTrace("List " + req.Request.URL.Path)
+		trace := utiltrace.New("List " + req.Request.URL.Path)
 
 		w := res.ResponseWriter
 
@@ -352,7 +352,7 @@ func ListResource(r rest.Lister, rw rest.Watcher, scope RequestScope, forceWatch
 func createHandler(r rest.NamedCreater, scope RequestScope, typer runtime.ObjectTyper, admit admission.Interface, includeName bool) restful.RouteFunction {
 	return func(req *restful.Request, res *restful.Response) {
 		// For performance tracking purposes.
-		trace := util.NewTrace("Create " + req.Request.URL.Path)
+		trace := utiltrace.New("Create " + req.Request.URL.Path)
 		defer trace.LogIfLong(500 * time.Millisecond)
 
 		w := res.ResponseWriter
@@ -707,7 +707,7 @@ func patchResource(
 func UpdateResource(r rest.Updater, scope RequestScope, typer runtime.ObjectTyper, admit admission.Interface) restful.RouteFunction {
 	return func(req *restful.Request, res *restful.Response) {
 		// For performance tracking purposes.
-		trace := util.NewTrace("Update " + req.Request.URL.Path)
+		trace := utiltrace.New("Update " + req.Request.URL.Path)
 		defer trace.LogIfLong(500 * time.Millisecond)
 
 		w := res.ResponseWriter
@@ -794,7 +794,7 @@ func UpdateResource(r rest.Updater, scope RequestScope, typer runtime.ObjectType
 func DeleteResource(r rest.GracefulDeleter, allowsOptions bool, scope RequestScope, admit admission.Interface) restful.RouteFunction {
 	return func(req *restful.Request, res *restful.Response) {
 		// For performance tracking purposes.
-		trace := util.NewTrace("Delete " + req.Request.URL.Path)
+		trace := utiltrace.New("Delete " + req.Request.URL.Path)
 		defer trace.LogIfLong(500 * time.Millisecond)
 
 		w := res.ResponseWriter

pkg/storage/cacher.go

@@ -24,6 +24,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/golang/glog"
+	"golang.org/x/net/context"
+
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -34,11 +37,8 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/client-go/tools/cache"
-	"k8s.io/kubernetes/pkg/util"
-
-	"github.com/golang/glog"
-	"golang.org/x/net/context"
 )
 
 // CacherConfig contains the configuration for a given Cache.
@@ -413,7 +413,7 @@ func (c *Cacher) GetToList(ctx context.Context, key string, resourceVersion stri
 		return err
 	}
 
-	trace := util.NewTrace(fmt.Sprintf("cacher %v: List", c.objectType.String()))
+	trace := utiltrace.New(fmt.Sprintf("cacher %v: List", c.objectType.String()))
 	defer trace.LogIfLong(500 * time.Millisecond)
 
 	c.ready.wait()
@@ -469,7 +469,7 @@ func (c *Cacher) List(ctx context.Context, key string, resourceVersion string, p
 		return err
 	}
 
-	trace := util.NewTrace(fmt.Sprintf("cacher %v: List", c.objectType.String()))
+	trace := utiltrace.New(fmt.Sprintf("cacher %v: List", c.objectType.String()))
 	defer trace.LogIfLong(500 * time.Millisecond)
 
 	c.ready.wait()

pkg/storage/etcd/etcd_helper.go

@@ -23,6 +23,10 @@ import (
 	"reflect"
 	"time"
 
+	etcd "github.com/coreos/etcd/client"
+	"github.com/golang/glog"
+	"golang.org/x/net/context"
+
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/conversion"
@@ -30,14 +34,10 @@ import (
 	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/apiserver/pkg/storage/etcd/metrics"
 	utilcache "k8s.io/apiserver/pkg/util/cache"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/storage"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
-	"k8s.io/kubernetes/pkg/util"
-
-	etcd "github.com/coreos/etcd/client"
-	"github.com/golang/glog"
-	"golang.org/x/net/context"
 )
 
 // Creates a new storage interface from the client
@@ -92,7 +92,7 @@ func (h *etcdHelper) Versioner() storage.Versioner {
 
 // Implements storage.Interface.
 func (h *etcdHelper) Create(ctx context.Context, key string, obj, out runtime.Object, ttl uint64) error {
-	trace := util.NewTrace("etcdHelper::Create " + getTypeName(obj))
+	trace := utiltrace.New("etcdHelper::Create " + getTypeName(obj))
 	defer trace.LogIfLong(250 * time.Millisecond)
 	if ctx == nil {
 		glog.Errorf("Context is nil")
@@ -301,7 +301,7 @@ func (h *etcdHelper) GetToList(ctx context.Context, key string, resourceVersion
 	if ctx == nil {
 		glog.Errorf("Context is nil")
 	}
-	trace := util.NewTrace("GetToList " + getTypeName(listObj))
+	trace := utiltrace.New("GetToList " + getTypeName(listObj))
 	listPtr, err := meta.GetItemsPtr(listObj)
 	if err != nil {
 		return err
@@ -338,7 +338,7 @@ func (h *etcdHelper) GetToList(ctx context.Context, key string, resourceVersion
 
 // decodeNodeList walks the tree of each node in the list and decodes into the specified object
 func (h *etcdHelper) decodeNodeList(nodes []*etcd.Node, filter storage.FilterFunc, slicePtr interface{}) error {
-	trace := util.NewTrace("decodeNodeList " + getTypeName(slicePtr))
+	trace := utiltrace.New("decodeNodeList " + getTypeName(slicePtr))
 	defer trace.LogIfLong(400 * time.Millisecond)
 	v, err := conversion.EnforcePtr(slicePtr)
 	if err != nil || v.Kind() != reflect.Slice {
@@ -383,7 +383,7 @@ func (h *etcdHelper) List(ctx context.Context, key string, resourceVersion strin
 	if ctx == nil {
 		glog.Errorf("Context is nil")
 	}
-	trace := util.NewTrace("List " + getTypeName(listObj))
+	trace := utiltrace.New("List " + getTypeName(listObj))
 	defer trace.LogIfLong(400 * time.Millisecond)
 	listPtr, err := meta.GetItemsPtr(listObj)
 	if err != nil {

pkg/storage/etcd3/store.go

@@ -25,18 +25,18 @@ import (
 	"strings"
 	"time"
 
+	"github.com/coreos/etcd/clientv3"
+	"github.com/golang/glog"
+	"golang.org/x/net/context"
+
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/conversion"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/watch"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/kubernetes/pkg/storage"
 	"k8s.io/kubernetes/pkg/storage/etcd"
-	"k8s.io/kubernetes/pkg/util"
-
-	"github.com/coreos/etcd/clientv3"
-	"github.com/golang/glog"
-	"golang.org/x/net/context"
 )
 
 type store struct {
@@ -216,7 +216,7 @@ func (s *store) conditionalDelete(ctx context.Context, key string, out runtime.O
 func (s *store) GuaranteedUpdate(
 	ctx context.Context, key string, out runtime.Object, ignoreNotFound bool,
 	precondtions *storage.Preconditions, tryUpdate storage.UpdateFunc, suggestion ...runtime.Object) error {
-	trace := util.NewTrace(fmt.Sprintf("GuaranteedUpdate etcd3: %s", reflect.TypeOf(out).String()))
+	trace := utiltrace.New(fmt.Sprintf("GuaranteedUpdate etcd3: %s", reflect.TypeOf(out).String()))
 	defer trace.LogIfLong(500 * time.Millisecond)
 
 	v, err := conversion.EnforcePtr(out)

pkg/storage/watch_cache.go

@@ -29,9 +29,9 @@ import (
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/watch"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/util/clock"
-	"k8s.io/kubernetes/pkg/util"
 )
 
 const (
@@ -281,7 +281,7 @@ func (w *watchCache) List() []interface{} {
 // waitUntilFreshAndBlock waits until cache is at least as fresh as given <resourceVersion>.
 // NOTE: This function acquired lock and doesn't release it.
 // You HAVE TO explicitly call w.RUnlock() after this function.
-func (w *watchCache) waitUntilFreshAndBlock(resourceVersion uint64, trace *util.Trace) error {
+func (w *watchCache) waitUntilFreshAndBlock(resourceVersion uint64, trace *utiltrace.Trace) error {
 	startTime := w.clock.Now()
 	go func() {
 		// Wake us up when the time limit has expired.  The docs
@@ -313,7 +313,7 @@ func (w *watchCache) waitUntilFreshAndBlock(resourceVersion uint64, trace *util.
 }
 
 // WaitUntilFreshAndList returns list of pointers to <storeElement> objects.
-func (w *watchCache) WaitUntilFreshAndList(resourceVersion uint64, trace *util.Trace) ([]interface{}, uint64, error) {
+func (w *watchCache) WaitUntilFreshAndList(resourceVersion uint64, trace *utiltrace.Trace) ([]interface{}, uint64, error) {
 	err := w.waitUntilFreshAndBlock(resourceVersion, trace)
 	defer w.RUnlock()
 	if err != nil {
@@ -323,7 +323,7 @@ func (w *watchCache) WaitUntilFreshAndList(resourceVersion uint64, trace *util.T
 }
 
 // WaitUntilFreshAndGet returns a pointers to <storeElement> object.
-func (w *watchCache) WaitUntilFreshAndGet(resourceVersion uint64, key string, trace *util.Trace) (interface{}, bool, uint64, error) {
+func (w *watchCache) WaitUntilFreshAndGet(resourceVersion uint64, key string, trace *utiltrace.Trace) (interface{}, bool, uint64, error) {
 	err := w.waitUntilFreshAndBlock(resourceVersion, trace)
 	defer w.RUnlock()
 	if err != nil {

plugin/pkg/scheduler/generic_scheduler.go

@@ -26,8 +26,8 @@ import (
 
 	"github.com/golang/glog"
 	"k8s.io/apimachinery/pkg/util/errors"
+	utiltrace "k8s.io/apiserver/pkg/util/trace"
 	"k8s.io/kubernetes/pkg/api/v1"
-	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/util/workqueue"
 	"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm"
 	"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm/predicates"
@@ -87,7 +87,7 @@ type genericScheduler struct {
 // If it succeeds, it will return the name of the node.
 // If it fails, it will return a Fiterror error with reasons.
 func (g *genericScheduler) Schedule(pod *v1.Pod, nodeLister algorithm.NodeLister) (string, error) {
-	trace := util.NewTrace(fmt.Sprintf("Scheduling %s/%s", pod.Namespace, pod.Name))
+	trace := utiltrace.New(fmt.Sprintf("Scheduling %s/%s", pod.Namespace, pod.Name))
 	defer trace.LogIfLong(100 * time.Millisecond)
 
 	nodes, err := nodeLister.List()

staging/src/k8s.io/apiserver/pkg/util/trace/trace.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package util
+package trace
 
 import (
 	"bytes"
@@ -35,7 +35,7 @@ type Trace struct {
 	steps     []traceStep
 }
 
-func NewTrace(name string) *Trace {
+func New(name string) *Trace {
 	return &Trace{name, time.Now(), nil}
 }