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use istio client-go library instead of knative (#1661)

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use istio client-go library instead of knative
bump kubernetes dependency version
change code coverage to codecov
This commit is contained in:
zryfish
2019-12-13 11:26:18 +08:00
committed by GitHub
parent f249a6e081
commit ea88c8803d
2071 changed files with 354531 additions and 108336 deletions
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143
vendor/k8s.io/client-go/tools/cache/reflector.go generated vendored
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@@ -17,18 +17,13 @@ limitations under the License.
package cache
import (
"context"
"errors"
"fmt"
"io"
"math/rand"
"net"
"net/url"
"reflect"
"strconv"
"strings"
"sync"
"sync/atomic"
"syscall"
"time"
apierrs "k8s.io/apimachinery/pkg/api/errors"
@@ -37,10 +32,13 @@ import (
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/clock"
"k8s.io/apimachinery/pkg/util/naming"
utilnet "k8s.io/apimachinery/pkg/util/net"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/tools/pager"
"k8s.io/klog"
"k8s.io/utils/trace"
)
// Reflector watches a specified resource and causes all changes to be reflected in the given store.
@@ -69,6 +67,9 @@ type Reflector struct {
lastSyncResourceVersion string
// lastSyncResourceVersionMutex guards read/write access to lastSyncResourceVersion
lastSyncResourceVersionMutex sync.RWMutex
// WatchListPageSize is the requested chunk size of initial and resync watch lists.
// Defaults to pager.PageSize.
WatchListPageSize int64
}
var (
@@ -80,7 +81,7 @@ var (
// NewNamespaceKeyedIndexerAndReflector creates an Indexer and a Reflector
// The indexer is configured to key on namespace
func NewNamespaceKeyedIndexerAndReflector(lw ListerWatcher, expectedType interface{}, resyncPeriod time.Duration) (indexer Indexer, reflector *Reflector) {
indexer = NewIndexer(MetaNamespaceKeyFunc, Indexers{"namespace": MetaNamespaceIndexFunc})
indexer = NewIndexer(MetaNamespaceKeyFunc, Indexers{NamespaceIndex: MetaNamespaceIndexFunc})
reflector = NewReflector(lw, expectedType, indexer, resyncPeriod)
return indexer, reflector
}
@@ -95,17 +96,10 @@ func NewReflector(lw ListerWatcher, expectedType interface{}, store Store, resyn
return NewNamedReflector(naming.GetNameFromCallsite(internalPackages...), lw, expectedType, store, resyncPeriod)
}
// reflectorDisambiguator is used to disambiguate started reflectors.
// initialized to an unstable value to ensure meaning isn't attributed to the suffix.
var reflectorDisambiguator = int64(time.Now().UnixNano() % 12345)
// NewNamedReflector same as NewReflector, but with a specified name for logging
func NewNamedReflector(name string, lw ListerWatcher, expectedType interface{}, store Store, resyncPeriod time.Duration) *Reflector {
reflectorSuffix := atomic.AddInt64(&reflectorDisambiguator, 1)
r := &Reflector{
name: name,
// we need this to be unique per process (some names are still the same) but obvious who it belongs to
metrics: newReflectorMetrics(makeValidPrometheusMetricLabel(fmt.Sprintf("reflector_"+name+"_%d", reflectorSuffix))),
name: name,
listerWatcher: lw,
store: store,
expectedType: reflect.TypeOf(expectedType),
@@ -116,11 +110,6 @@ func NewNamedReflector(name string, lw ListerWatcher, expectedType interface{},
return r
}
func makeValidPrometheusMetricLabel(in string) string {
// this isn't perfect, but it removes our common characters
return strings.NewReplacer("/", "_", ".", "_", "-", "_", ":", "_").Replace(in)
}
// internalPackages are packages that ignored when creating a default reflector name. These packages are in the common
// call chains to NewReflector, so they'd be low entropy names for reflectors
var internalPackages = []string{"client-go/tools/cache/"}
@@ -173,27 +162,64 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
// to be served from cache and potentially be delayed relative to
// etcd contents. Reflector framework will catch up via Watch() eventually.
options := metav1.ListOptions{ResourceVersion: "0"}
r.metrics.numberOfLists.Inc()
start := r.clock.Now()
list, err := r.listerWatcher.List(options)
if err != nil {
return fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err)
if err := func() error {
initTrace := trace.New("Reflector ListAndWatch", trace.Field{"name", r.name})
defer initTrace.LogIfLong(10 * time.Second)
var list runtime.Object
var err error
listCh := make(chan struct{}, 1)
panicCh := make(chan interface{}, 1)
go func() {
defer func() {
if r := recover(); r != nil {
panicCh <- r
}
}()
// Attempt to gather list in chunks, if supported by listerWatcher, if not, the first
// list request will return the full response.
pager := pager.New(pager.SimplePageFunc(func(opts metav1.ListOptions) (runtime.Object, error) {
return r.listerWatcher.List(opts)
}))
if r.WatchListPageSize != 0 {
pager.PageSize = r.WatchListPageSize
}
// Pager falls back to full list if paginated list calls fail due to an "Expired" error.
list, err = pager.List(context.Background(), options)
close(listCh)
}()
select {
case <-stopCh:
return nil
case r := <-panicCh:
panic(r)
case <-listCh:
}
if err != nil {
return fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err)
}
initTrace.Step("Objects listed")
listMetaInterface, err := meta.ListAccessor(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v: %v", r.name, list, err)
}
resourceVersion = listMetaInterface.GetResourceVersion()
initTrace.Step("Resource version extracted")
items, err := meta.ExtractList(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err)
}
initTrace.Step("Objects extracted")
if err := r.syncWith(items, resourceVersion); err != nil {
return fmt.Errorf("%s: Unable to sync list result: %v", r.name, err)
}
initTrace.Step("SyncWith done")
r.setLastSyncResourceVersion(resourceVersion)
initTrace.Step("Resource version updated")
return nil
}(); err != nil {
return err
}
r.metrics.listDuration.Observe(time.Since(start).Seconds())
listMetaInterface, err := meta.ListAccessor(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v: %v", r.name, list, err)
}
resourceVersion = listMetaInterface.GetResourceVersion()
items, err := meta.ExtractList(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err)
}
r.metrics.numberOfItemsInList.Observe(float64(len(items)))
if err := r.syncWith(items, resourceVersion); err != nil {
return fmt.Errorf("%s: Unable to sync list result: %v", r.name, err)
}
r.setLastSyncResourceVersion(resourceVersion)
resyncerrc := make(chan error, 1)
cancelCh := make(chan struct{})
@@ -237,9 +263,12 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
// We want to avoid situations of hanging watchers. Stop any wachers that do not
// receive any events within the timeout window.
TimeoutSeconds: &timeoutSeconds,
// To reduce load on kube-apiserver on watch restarts, you may enable watch bookmarks.
// Reflector doesn't assume bookmarks are returned at all (if the server do not support
// watch bookmarks, it will ignore this field).
AllowWatchBookmarks: true,
}
r.metrics.numberOfWatches.Inc()
w, err := r.listerWatcher.Watch(options)
if err != nil {
switch err {
@@ -254,20 +283,21 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
// It doesn't make sense to re-list all objects because most likely we will be able to restart
// watch where we ended.
// If that's the case wait and resend watch request.
if urlError, ok := err.(*url.Error); ok {
if opError, ok := urlError.Err.(*net.OpError); ok {
if errno, ok := opError.Err.(syscall.Errno); ok && errno == syscall.ECONNREFUSED {
time.Sleep(time.Second)
continue
}
}
if utilnet.IsConnectionRefused(err) {
time.Sleep(time.Second)
continue
}
return nil
}
if err := r.watchHandler(w, &resourceVersion, resyncerrc, stopCh); err != nil {
if err != errorStopRequested {
klog.Warningf("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
switch {
case apierrs.IsResourceExpired(err):
klog.V(4).Infof("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
default:
klog.Warningf("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
}
}
return nil
}
@@ -291,11 +321,6 @@ func (r *Reflector) watchHandler(w watch.Interface, resourceVersion *string, err
// Stopping the watcher should be idempotent and if we return from this function there's no way
// we're coming back in with the same watch interface.
defer w.Stop()
// update metrics
defer func() {
r.metrics.numberOfItemsInWatch.Observe(float64(eventCount))
r.metrics.watchDuration.Observe(time.Since(start).Seconds())
}()
loop:
for {
@@ -340,6 +365,8 @@ loop:
if err != nil {
utilruntime.HandleError(fmt.Errorf("%s: unable to delete watch event object (%#v) from store: %v", r.name, event.Object, err))
}
case watch.Bookmark:
// A `Bookmark` means watch has synced here, just update the resourceVersion
default:
utilruntime.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
}
@@ -349,9 +376,8 @@ loop:
}
}
watchDuration := r.clock.Now().Sub(start)
watchDuration := r.clock.Since(start)
if watchDuration < 1*time.Second && eventCount == 0 {
r.metrics.numberOfShortWatches.Inc()
return fmt.Errorf("very short watch: %s: Unexpected watch close - watch lasted less than a second and no items received", r.name)
}
klog.V(4).Infof("%s: Watch close - %v total %v items received", r.name, r.expectedType, eventCount)
@@ -370,9 +396,4 @@ func (r *Reflector) setLastSyncResourceVersion(v string) {
r.lastSyncResourceVersionMutex.Lock()
defer r.lastSyncResourceVersionMutex.Unlock()
r.lastSyncResourceVersion = v
rv, err := strconv.Atoi(v)
if err == nil {
r.metrics.lastResourceVersion.Set(float64(rv))
}
}