[VOL-5486] Fix deprecated versions
Change-Id: I3e03ea246020547ae75fa92ce8cf5cbba7e8f3bb
Signed-off-by: Abhay Kumar <abhay.kumar@radisys.com>
diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go b/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go
new file mode 100644
index 0000000..9b6d8a1
--- /dev/null
+++ b/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package grpcsync
+
+import (
+ "context"
+
+ "google.golang.org/grpc/internal/buffer"
+)
+
+// CallbackSerializer provides a mechanism to schedule callbacks in a
+// synchronized manner. It provides a FIFO guarantee on the order of execution
+// of scheduled callbacks. New callbacks can be scheduled by invoking the
+// Schedule() method.
+//
+// This type is safe for concurrent access.
+type CallbackSerializer struct {
+ // done is closed once the serializer is shut down completely, i.e all
+ // scheduled callbacks are executed and the serializer has deallocated all
+ // its resources.
+ done chan struct{}
+
+ callbacks *buffer.Unbounded
+}
+
+// NewCallbackSerializer returns a new CallbackSerializer instance. The provided
+// context will be passed to the scheduled callbacks. Users should cancel the
+// provided context to shutdown the CallbackSerializer. It is guaranteed that no
+// callbacks will be added once this context is canceled, and any pending un-run
+// callbacks will be executed before the serializer is shut down.
+func NewCallbackSerializer(ctx context.Context) *CallbackSerializer {
+ cs := &CallbackSerializer{
+ done: make(chan struct{}),
+ callbacks: buffer.NewUnbounded(),
+ }
+ go cs.run(ctx)
+ return cs
+}
+
+// TrySchedule tries to schedule the provided callback function f to be
+// executed in the order it was added. This is a best-effort operation. If the
+// context passed to NewCallbackSerializer was canceled before this method is
+// called, the callback will not be scheduled.
+//
+// Callbacks are expected to honor the context when performing any blocking
+// operations, and should return early when the context is canceled.
+func (cs *CallbackSerializer) TrySchedule(f func(ctx context.Context)) {
+ cs.callbacks.Put(f)
+}
+
+// ScheduleOr schedules the provided callback function f to be executed in the
+// order it was added. If the context passed to NewCallbackSerializer has been
+// canceled before this method is called, the onFailure callback will be
+// executed inline instead.
+//
+// Callbacks are expected to honor the context when performing any blocking
+// operations, and should return early when the context is canceled.
+func (cs *CallbackSerializer) ScheduleOr(f func(ctx context.Context), onFailure func()) {
+ if cs.callbacks.Put(f) != nil {
+ onFailure()
+ }
+}
+
+func (cs *CallbackSerializer) run(ctx context.Context) {
+ defer close(cs.done)
+
+ // Close the buffer when the context is canceled
+ // to prevent new callbacks from being added.
+ context.AfterFunc(ctx, cs.callbacks.Close)
+
+ // Run all callbacks.
+ for cb := range cs.callbacks.Get() {
+ cs.callbacks.Load()
+ cb.(func(context.Context))(ctx)
+ }
+}
+
+// Done returns a channel that is closed after the context passed to
+// NewCallbackSerializer is canceled and all callbacks have been executed.
+func (cs *CallbackSerializer) Done() <-chan struct{} {
+ return cs.done
+}
diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/event.go b/vendor/google.golang.org/grpc/internal/grpcsync/event.go
index fbe697c..d788c24 100644
--- a/vendor/google.golang.org/grpc/internal/grpcsync/event.go
+++ b/vendor/google.golang.org/grpc/internal/grpcsync/event.go
@@ -21,28 +21,25 @@
package grpcsync
import (
- "sync"
"sync/atomic"
)
// Event represents a one-time event that may occur in the future.
type Event struct {
- fired int32
+ fired atomic.Bool
c chan struct{}
- o sync.Once
}
// Fire causes e to complete. It is safe to call multiple times, and
// concurrently. It returns true iff this call to Fire caused the signaling
-// channel returned by Done to close.
+// channel returned by Done to close. If Fire returns false, it is possible
+// the Done channel has not been closed yet.
func (e *Event) Fire() bool {
- ret := false
- e.o.Do(func() {
- atomic.StoreInt32(&e.fired, 1)
+ if e.fired.CompareAndSwap(false, true) {
close(e.c)
- ret = true
- })
- return ret
+ return true
+ }
+ return false
}
// Done returns a channel that will be closed when Fire is called.
@@ -52,7 +49,7 @@
// HasFired returns true if Fire has been called.
func (e *Event) HasFired() bool {
- return atomic.LoadInt32(&e.fired) == 1
+ return e.fired.Load()
}
// NewEvent returns a new, ready-to-use Event.
diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go b/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go
new file mode 100644
index 0000000..6d8c2f5
--- /dev/null
+++ b/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go
@@ -0,0 +1,121 @@
+/*
+ *
+ * Copyright 2023 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package grpcsync
+
+import (
+ "context"
+ "sync"
+)
+
+// Subscriber represents an entity that is subscribed to messages published on
+// a PubSub. It wraps the callback to be invoked by the PubSub when a new
+// message is published.
+type Subscriber interface {
+ // OnMessage is invoked when a new message is published. Implementations
+ // must not block in this method.
+ OnMessage(msg any)
+}
+
+// PubSub is a simple one-to-many publish-subscribe system that supports
+// messages of arbitrary type. It guarantees that messages are delivered in
+// the same order in which they were published.
+//
+// Publisher invokes the Publish() method to publish new messages, while
+// subscribers interested in receiving these messages register a callback
+// via the Subscribe() method.
+//
+// Once a PubSub is stopped, no more messages can be published, but any pending
+// published messages will be delivered to the subscribers. Done may be used
+// to determine when all published messages have been delivered.
+type PubSub struct {
+ cs *CallbackSerializer
+
+ // Access to the below fields are guarded by this mutex.
+ mu sync.Mutex
+ msg any
+ subscribers map[Subscriber]bool
+}
+
+// NewPubSub returns a new PubSub instance. Users should cancel the
+// provided context to shutdown the PubSub.
+func NewPubSub(ctx context.Context) *PubSub {
+ return &PubSub{
+ cs: NewCallbackSerializer(ctx),
+ subscribers: map[Subscriber]bool{},
+ }
+}
+
+// Subscribe registers the provided Subscriber to the PubSub.
+//
+// If the PubSub contains a previously published message, the Subscriber's
+// OnMessage() callback will be invoked asynchronously with the existing
+// message to begin with, and subsequently for every newly published message.
+//
+// The caller is responsible for invoking the returned cancel function to
+// unsubscribe itself from the PubSub.
+func (ps *PubSub) Subscribe(sub Subscriber) (cancel func()) {
+ ps.mu.Lock()
+ defer ps.mu.Unlock()
+
+ ps.subscribers[sub] = true
+
+ if ps.msg != nil {
+ msg := ps.msg
+ ps.cs.TrySchedule(func(context.Context) {
+ ps.mu.Lock()
+ defer ps.mu.Unlock()
+ if !ps.subscribers[sub] {
+ return
+ }
+ sub.OnMessage(msg)
+ })
+ }
+
+ return func() {
+ ps.mu.Lock()
+ defer ps.mu.Unlock()
+ delete(ps.subscribers, sub)
+ }
+}
+
+// Publish publishes the provided message to the PubSub, and invokes
+// callbacks registered by subscribers asynchronously.
+func (ps *PubSub) Publish(msg any) {
+ ps.mu.Lock()
+ defer ps.mu.Unlock()
+
+ ps.msg = msg
+ for sub := range ps.subscribers {
+ s := sub
+ ps.cs.TrySchedule(func(context.Context) {
+ ps.mu.Lock()
+ defer ps.mu.Unlock()
+ if !ps.subscribers[s] {
+ return
+ }
+ s.OnMessage(msg)
+ })
+ }
+}
+
+// Done returns a channel that is closed after the context passed to NewPubSub
+// is canceled and all updates have been sent to subscribers.
+func (ps *PubSub) Done() <-chan struct{} {
+ return ps.cs.Done()
+}