diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/Awaitable.java b/common/reactive/src/main/java/io/helidon/common/reactive/Awaitable.java
new file mode 100644
index 000000000..b44fc3df2
--- /dev/null
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/Awaitable.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2020 Oracle and/or its affiliates.
+ *
+ * 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 io.helidon.common.reactive;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+/**
+ * Makes intentional blocking when waiting for {@link CompletableFuture} more convenient with {@link Awaitable#await()}
+ * and {@link Awaitable#await(long, java.util.concurrent.TimeUnit)} methods.
+ *
+ * @param <T> payload type
+ */
+public interface Awaitable<T> {
+
+    /**
+     * Returns a {@link java.util.concurrent.CompletableFuture} maintaining the same
+     * completion properties as this stage. If this stage is already a
+     * CompletableFuture, this method may return this stage itself.
+     * Otherwise, invocation of this method may be equivalent in
+     * effect to {@code thenApply(x -> x)}, but returning an instance
+     * of type {@code CompletableFuture}.
+     *
+     * @return the CompletableFuture
+     */
+    CompletableFuture<T> toCompletableFuture();
+
+    /**
+     * Block until {@link CompletableFuture} is completed, throws only unchecked exceptions.
+     *
+     * @return T payload type
+     * @throws java.util.concurrent.CancellationException if the computation was cancelled
+     * @throws java.util.concurrent.CompletionException   if this future completed
+     */
+    default T await() {
+        return this.toCompletableFuture().join();
+    }
+
+    /**
+     * Block until {@link CompletableFuture} is completed, throws only unchecked exceptions.
+     *
+     * @param timeout the maximum time to wait
+     * @param unit    the time unit of the timeout argument
+     * @return the result value
+     * @throws java.util.concurrent.CancellationException if this future was cancelled
+     * @throws java.util.concurrent.CompletionException   if this future completed exceptionally,
+     *                                                    was interrupted while waiting or the wait timed out
+     */
+    default T await(long timeout, TimeUnit unit) {
+        try {
+            return this.toCompletableFuture().get(timeout, unit);
+        } catch (ExecutionException e) {
+            throw new CompletionException(e.getCause());
+        } catch (InterruptedException | TimeoutException e) {
+            throw new CompletionException(e);
+        }
+    }
+}
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/CompletionAwaitable.java b/common/reactive/src/main/java/io/helidon/common/reactive/CompletionAwaitable.java
new file mode 100644
index 000000000..7a7cb7a55
--- /dev/null
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/CompletionAwaitable.java
@@ -0,0 +1,301 @@
+/*
+ * Copyright (c) 2020 Oracle and/or its affiliates.
+ *
+ * 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 io.helidon.common.reactive;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
+import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+/**
+ * {@link CompletionStage} wrapper enriched with {@link io.helidon.common.reactive.Awaitable}.
+ *
+ * @param <T> payload type
+ */
+public class CompletionAwaitable<T> implements CompletionStage<T>, Awaitable<T> {
+
+    private Supplier<CompletionStage<T>> originalStage;
+
+    CompletionAwaitable(Supplier<CompletionStage<T>> originalStage) {
+        this.originalStage = originalStage;
+    }
+
+    CompletionAwaitable() {
+    }
+
+    void setOriginalStage(final Supplier<CompletionStage<T>> originalStage) {
+        this.originalStage = originalStage;
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenApply(final Function<? super T, ? extends U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().thenApply(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenApplyAsync(final Function<? super T, ? extends U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().thenApplyAsync(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenApplyAsync(final Function<? super T, ? extends U> fn, final Executor executor) {
+        CompletionStage<U> completionStage = originalStage.get().thenApplyAsync(fn, executor);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenAccept(final Consumer<? super T> action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAccept(action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenAcceptAsync(final Consumer<? super T> action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAcceptAsync(action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenAcceptAsync(final Consumer<? super T> action, final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAcceptAsync(action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenRun(final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenRun(action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenRunAsync(final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenRunAsync(action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> thenRunAsync(final Runnable action, final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().thenRunAsync(action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public <U, V> CompletionAwaitable<V> thenCombine(final CompletionStage<? extends U> other,
+                                                     final BiFunction<? super T, ? super U, ? extends V> fn) {
+        CompletionStage<V> completionStage = originalStage.get().thenCombine(other, fn);
+        return new CompletionAwaitable<V>(() -> completionStage);
+    }
+
+    @Override
+    public <U, V> CompletionAwaitable<V> thenCombineAsync(final CompletionStage<? extends U> other,
+                                                          final BiFunction<? super T, ? super U, ? extends V> fn) {
+        CompletionStage<V> completionStage = originalStage.get().thenCombineAsync(other, fn);
+        return new CompletionAwaitable<V>(() -> completionStage);
+    }
+
+    @Override
+    public <U, V> CompletionAwaitable<V> thenCombineAsync(final CompletionStage<? extends U> other,
+                                                          final BiFunction<? super T, ? super U, ? extends V> fn,
+                                                          final Executor executor) {
+        CompletionStage<V> completionStage = originalStage.get().thenCombineAsync(other, fn, executor);
+        return new CompletionAwaitable<V>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<Void> thenAcceptBoth(final CompletionStage<? extends U> other,
+                                                        final BiConsumer<? super T, ? super U> action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAcceptBoth(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<Void> thenAcceptBothAsync(final CompletionStage<? extends U> other,
+                                                             final BiConsumer<? super T, ? super U> action) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAcceptBothAsync(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<Void> thenAcceptBothAsync(final CompletionStage<? extends U> other,
+                                                             final BiConsumer<? super T, ? super U> action,
+                                                             final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().thenAcceptBothAsync(other, action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterBoth(final CompletionStage<?> other,
+                                                  final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterBoth(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterBothAsync(final CompletionStage<?> other,
+                                                       final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterBothAsync(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterBothAsync(final CompletionStage<?> other,
+                                                       final Runnable action,
+                                                       final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterBothAsync(other, action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> applyToEither(final CompletionStage<? extends T> other,
+                                                    final Function<? super T, U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().applyToEither(other, fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> applyToEitherAsync(final CompletionStage<? extends T> other,
+                                                         final Function<? super T, U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().applyToEitherAsync(other, fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> applyToEitherAsync(final CompletionStage<? extends T> other,
+                                                         final Function<? super T, U> fn,
+                                                         final Executor executor) {
+        CompletionStage<U> completionStage = originalStage.get().applyToEitherAsync(other, fn, executor);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> acceptEither(final CompletionStage<? extends T> other,
+                                                  final Consumer<? super T> action) {
+        CompletionStage<Void> completionStage = originalStage.get().acceptEither(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> acceptEitherAsync(final CompletionStage<? extends T> other,
+                                                       final Consumer<? super T> action) {
+        CompletionStage<Void> completionStage = originalStage.get().acceptEitherAsync(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> acceptEitherAsync(final CompletionStage<? extends T> other,
+                                                       final Consumer<? super T> action,
+                                                       final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().acceptEitherAsync(other, action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterEither(final CompletionStage<?> other,
+                                                    final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterEither(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterEitherAsync(final CompletionStage<?> other,
+                                                         final Runnable action) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterEitherAsync(other, action);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<Void> runAfterEitherAsync(final CompletionStage<?> other,
+                                                         final Runnable action, final Executor executor) {
+        CompletionStage<Void> completionStage = originalStage.get().runAfterEitherAsync(other, action, executor);
+        return new CompletionAwaitable<Void>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenCompose(final Function<? super T, ? extends CompletionStage<U>> fn) {
+        CompletionStage<U> completionStage = originalStage.get().thenCompose(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenComposeAsync(final Function<? super T, ? extends CompletionStage<U>> fn) {
+        CompletionStage<U> completionStage = originalStage.get().thenComposeAsync(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> thenComposeAsync(final Function<? super T, ? extends CompletionStage<U>> fn,
+                                                       final Executor executor) {
+        CompletionStage<U> completionStage = originalStage.get().thenComposeAsync(fn, executor);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> handle(final BiFunction<? super T, Throwable, ? extends U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().handle(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> handleAsync(final BiFunction<? super T, Throwable, ? extends U> fn) {
+        CompletionStage<U> completionStage = originalStage.get().handleAsync(fn);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public <U> CompletionAwaitable<U> handleAsync(final BiFunction<? super T, Throwable, ? extends U> fn,
+                                                  final Executor executor) {
+        CompletionStage<U> completionStage = originalStage.get().handleAsync(fn, executor);
+        return new CompletionAwaitable<U>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<T> whenComplete(final BiConsumer<? super T, ? super Throwable> action) {
+        CompletionStage<T> completionStage = originalStage.get().whenComplete(action);
+        return new CompletionAwaitable<T>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<T> whenCompleteAsync(final BiConsumer<? super T, ? super Throwable> action) {
+        CompletionStage<T> completionStage = originalStage.get().whenCompleteAsync(action);
+        return new CompletionAwaitable<T>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<T> whenCompleteAsync(final BiConsumer<? super T, ? super Throwable> action,
+                                                    final Executor executor) {
+        CompletionStage<T> completionStage = originalStage.get().whenCompleteAsync(action, executor);
+        return new CompletionAwaitable<T>(() -> completionStage);
+    }
+
+    @Override
+    public CompletionAwaitable<T> exceptionally(final Function<Throwable, ? extends T> fn) {
+        CompletionStage<T> completionStage = originalStage.get().exceptionally(fn);
+        return new CompletionAwaitable<T>(() -> completionStage);
+    }
+
+    @Override
+    public CompletableFuture<T> toCompletableFuture() {
+        return originalStage.get().toCompletableFuture();
+    }
+}
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/CompletionSingle.java b/common/reactive/src/main/java/io/helidon/common/reactive/CompletionSingle.java
new file mode 100644
index 000000000..c07f1574f
--- /dev/null
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/CompletionSingle.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c)  2020 Oracle and/or its affiliates.
+ *
+ * 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 io.helidon.common.reactive;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Single as CompletionStage.
+ *
+ * @param <T> payload type
+ */
+public abstract class CompletionSingle<T> extends CompletionAwaitable<T> implements Single<T> {
+
+    private final AtomicReference<CompletableFuture<T>> stageReference = new AtomicReference<>();
+    private final CompletableFuture<Void> cancelFuture = new CompletableFuture<>();
+
+    protected CompletionSingle() {
+        setOriginalStage(this::getLazyStage);
+    }
+
+    private CompletableFuture<T> getLazyStage() {
+        stageReference.compareAndSet(null, this.toNullableStage());
+        return stageReference.get();
+    }
+
+    private CompletableFuture<T> toNullableStage() {
+        SingleToFuture<T> subscriber = new SingleToFuture<>(true);
+        this.subscribe(subscriber);
+        return subscriber;
+    }
+
+    @Override
+    public Single<T> onCancel(final Runnable onCancel) {
+        cancelFuture.thenRun(onCancel);
+        return this;
+    }
+
+    @Override
+    public Single<T> cancel() {
+        Single<T> single = Single.super.cancel();
+        this.cancelFuture.complete(null);
+        return single;
+    }
+
+}
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/Multi.java b/common/reactive/src/main/java/io/helidon/common/reactive/Multi.java
index 28e0b92e3..6d7b96af5 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/Multi.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/Multi.java
@@ -19,6 +19,7 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Objects;
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.CompletionStage;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Flow;
@@ -152,6 +153,18 @@ public interface Multi<T> extends Subscribable<T> {
         return new MultiFromPublisher<>(source);
     }
 
+    /**
+     * Create a {@link Multi} instance wrapped around the given {@link Single}.
+     *
+     * @param <T>    item type
+     * @param single source {@link Single} publisher
+     * @return Multi
+     * @throws NullPointerException if source is {@code null}
+     */
+    static <T> Multi<T> from(Single<T> single) {
+        return from((Publisher<T>) single);
+    }
+
     /**
      * Create a {@link Multi} instance that publishes the given {@link Stream}.
      * <p>
@@ -842,10 +855,23 @@ public interface Multi<T> extends Subscribable<T> {
      * Terminal stage, invokes provided consumer for every item in the stream.
      *
      * @param consumer consumer to be invoked for each item
+     * @return Single completed when the stream terminates
      */
-    default void forEach(Consumer<? super T> consumer) {
-        FunctionalSubscriber<T> subscriber = new FunctionalSubscriber<>(consumer, null, null, null);
+    default Single<Void> forEach(Consumer<? super T> consumer) {
+        CompletableFuture<Void> future = new CompletableFuture<>();
+        Single<Void> single = Single.from(future, true);
+        FunctionalSubscriber<T> subscriber = new FunctionalSubscriber<>(consumer,
+                future::completeExceptionally,
+                () -> future.complete(null),
+                subscription -> {
+                    subscription.request(Long.MAX_VALUE);
+                    single.onCancel(subscription::cancel);
+                }
+        );
+
         this.subscribe(subscriber);
+
+        return single;
     }
 
 }
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectPublisher.java
index abc7ff0c4..c1a628e89 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectPublisher.java
@@ -26,7 +26,7 @@ import java.util.function.Supplier;
  * @param <T> the element type of the upstream
  * @param <U> the collection type
  */
-final class MultiCollectPublisher<T, U> implements Single<U> {
+final class MultiCollectPublisher<T, U> extends CompletionSingle<U> {
 
     private final Multi<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectorPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectorPublisher.java
index 9598dede3..7bcbd4230 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectorPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/MultiCollectorPublisher.java
@@ -35,7 +35,7 @@ import java.util.stream.Collector;
  * @param <A> the collection type
  * @param <R> the result type
  */
-final class MultiCollectorPublisher<T, A, R> implements Single<R> {
+final class MultiCollectorPublisher<T, A, R> extends CompletionSingle<R> {
 
     private final Multi<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/MultiFirstPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/MultiFirstPublisher.java
index 47ca69a91..4940af069 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/MultiFirstPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/MultiFirstPublisher.java
@@ -17,7 +17,7 @@ package io.helidon.common.reactive;
 
 import java.util.concurrent.Flow;
 
-final class MultiFirstPublisher<T> implements Single<T> {
+final class MultiFirstPublisher<T> extends CompletionSingle<T> {
 
     private final Multi<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduce.java b/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduce.java
index 487be271d..564236c27 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduce.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduce.java
@@ -26,7 +26,7 @@ import java.util.function.BiFunction;
  * the result as a Single.
  * @param <T> the element type of the source and result
  */
-final class MultiReduce<T> implements Single<T> {
+final class MultiReduce<T> extends CompletionSingle<T> {
 
     private final Multi<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduceFull.java b/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduceFull.java
index 04c94eaae..a2138eb45 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduceFull.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/MultiReduceFull.java
@@ -27,7 +27,7 @@ import java.util.function.Supplier;
  * @param <T> the source value type
  * @param <R> the accumulator and result type
  */
-final class MultiReduceFull<T, R> implements Single<R> {
+final class MultiReduceFull<T, R> extends CompletionSingle<R> {
 
     private final Multi<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/Single.java b/common/reactive/src/main/java/io/helidon/common/reactive/Single.java
index 92a77f86a..a6d5494bb 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/Single.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/Single.java
@@ -27,6 +27,7 @@ import java.util.concurrent.Flow.Subscriber;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
+import java.util.function.BiConsumer;
 import java.util.function.BiFunction;
 import java.util.function.BiPredicate;
 import java.util.function.Consumer;
@@ -42,7 +43,7 @@ import io.helidon.common.mapper.Mapper;
  * @param <T> item type
  * @see Multi
  */
-public interface Single<T> extends Subscribable<T> {
+public interface Single<T> extends Subscribable<T>, CompletionStage<T>, Awaitable<T> {
 
     // --------------------------------------------------------------------------------------------------------
     // Factory (source-like) methods
@@ -130,6 +131,18 @@ public interface Single<T> extends Subscribable<T> {
         return new SingleFromPublisher<>(source);
     }
 
+    /**
+     * Create a {@link Single} instance that publishes the first and only item received from the given {@link Single}.
+     *
+     * @param <T>    item type
+     * @param single source {@link Single} publisher
+     * @return Single
+     * @throws NullPointerException if source is {@code null}
+     */
+    static <T> Single<T> from(Single<T> single) {
+        return from((Publisher<T>) single);
+    }
+
     /**
      * Create a {@link Single} instance that publishes the given item to its subscriber(s).
      *
@@ -541,7 +554,7 @@ public interface Single<T> extends Subscribable<T> {
      */
     default CompletionStage<T> toStage() {
         try {
-            SingleToFuture<T> subscriber = new SingleToFuture<>();
+            SingleToFuture<T> subscriber = new SingleToFuture<>(false);
             this.subscribe(subscriber);
             return subscriber;
         } catch (Throwable ex) {
@@ -550,4 +563,139 @@ public interface Single<T> extends Subscribable<T> {
             return future;
         }
     }
+
+    /**
+     * Cancel upstream.
+     *
+     * @return new {@link Single} for eventually received single value.
+     */
+    default Single<T> cancel() {
+        CompletableFuture<T> future = new CompletableFuture<>();
+        FunctionalSubscriber<T> subscriber = new FunctionalSubscriber<>(future::complete,
+                future::completeExceptionally,
+                () -> future.complete(null),
+                Flow.Subscription::cancel
+        );
+        this.subscribe(subscriber);
+        return Single.from(future);
+    }
+
+    @Override
+    <U> CompletionAwaitable<U> thenApply(Function<? super T, ? extends U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> thenApplyAsync(Function<? super T, ? extends U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> thenApplyAsync(Function<? super T, ? extends U> fn, Executor executor);
+
+    @Override
+    CompletionAwaitable<Void> thenAccept(Consumer<? super T> action);
+
+    @Override
+    CompletionAwaitable<Void> thenAcceptAsync(Consumer<? super T> action);
+
+    @Override
+    CompletionAwaitable<Void> thenAcceptAsync(Consumer<? super T> action, Executor executor);
+
+    @Override
+    CompletionAwaitable<Void> thenRun(Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> thenRunAsync(Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> thenRunAsync(Runnable action, Executor executor);
+
+    @Override
+    <U, V> CompletionAwaitable<V> thenCombine(CompletionStage<? extends U> other,
+                                              BiFunction<? super T, ? super U, ? extends V> fn);
+
+    @Override
+    <U, V> CompletionAwaitable<V> thenCombineAsync(CompletionStage<? extends U> other,
+                                                   BiFunction<? super T, ? super U, ? extends V> fn);
+
+    @Override
+    <U, V> CompletionAwaitable<V> thenCombineAsync(CompletionStage<? extends U> other,
+                                                   BiFunction<? super T, ? super U, ? extends V> fn, Executor executor);
+
+    @Override
+    <U> CompletionAwaitable<Void> thenAcceptBoth(CompletionStage<? extends U> other,
+                                                 BiConsumer<? super T, ? super U> action);
+
+    @Override
+    <U> CompletionAwaitable<Void> thenAcceptBothAsync(CompletionStage<? extends U> other,
+                                                      BiConsumer<? super T, ? super U> action);
+
+    @Override
+    <U> CompletionAwaitable<Void> thenAcceptBothAsync(CompletionStage<? extends U> other,
+                                                      BiConsumer<? super T, ? super U> action, Executor executor);
+
+    @Override
+    CompletionAwaitable<Void> runAfterBoth(CompletionStage<?> other, Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> runAfterBothAsync(CompletionStage<?> other, Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> runAfterBothAsync(CompletionStage<?> other, Runnable action, Executor executor);
+
+    @Override
+    <U> CompletionAwaitable<U> applyToEither(CompletionStage<? extends T> other, Function<? super T, U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> applyToEitherAsync(CompletionStage<? extends T> other, Function<? super T, U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> applyToEitherAsync(CompletionStage<? extends T> other, Function<? super T, U> fn,
+                                                  Executor executor);
+
+    @Override
+    CompletionAwaitable<Void> acceptEither(CompletionStage<? extends T> other, Consumer<? super T> action);
+
+    @Override
+    CompletionAwaitable<Void> acceptEitherAsync(CompletionStage<? extends T> other, Consumer<? super T> action);
+
+    @Override
+    CompletionAwaitable<Void> acceptEitherAsync(CompletionStage<? extends T> other, Consumer<? super T> action,
+                                                Executor executor);
+
+    @Override
+    CompletionAwaitable<Void> runAfterEither(CompletionStage<?> other, Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> runAfterEitherAsync(CompletionStage<?> other, Runnable action);
+
+    @Override
+    CompletionAwaitable<Void> runAfterEitherAsync(CompletionStage<?> other, Runnable action, Executor executor);
+
+    @Override
+    <U> CompletionAwaitable<U> thenCompose(Function<? super T, ? extends CompletionStage<U>> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> thenComposeAsync(Function<? super T, ? extends CompletionStage<U>> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> thenComposeAsync(Function<? super T, ? extends CompletionStage<U>> fn, Executor executor);
+
+    @Override
+    <U> CompletionAwaitable<U> handle(BiFunction<? super T, Throwable, ? extends U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> handleAsync(BiFunction<? super T, Throwable, ? extends U> fn);
+
+    @Override
+    <U> CompletionAwaitable<U> handleAsync(BiFunction<? super T, Throwable, ? extends U> fn, Executor executor);
+
+    @Override
+    CompletionAwaitable<T> whenComplete(BiConsumer<? super T, ? super Throwable> action);
+
+    @Override
+    CompletionAwaitable<T> whenCompleteAsync(BiConsumer<? super T, ? super Throwable> action);
+
+    @Override
+    CompletionAwaitable<T> whenCompleteAsync(BiConsumer<? super T, ? super Throwable> action, Executor executor);
+
+    @Override
+    CompletionAwaitable<T> exceptionally(Function<Throwable, ? extends T> fn);
 }
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefaultIfEmpty.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefaultIfEmpty.java
index fb1383a78..162eaede2 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefaultIfEmpty.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefaultIfEmpty.java
@@ -23,7 +23,7 @@ import java.util.concurrent.Flow;
  * Signal an item if the source is empty.
  * @param <T> the element type
  */
-final class SingleDefaultIfEmpty<T> implements Single<T> {
+final class SingleDefaultIfEmpty<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefer.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefer.java
index 8eef2b77d..20c0b684d 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefer.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleDefer.java
@@ -25,7 +25,7 @@ import java.util.function.Supplier;
  * Create a Single for each incoming subscriber via a supplier callback.
  * @param <T> the element type of the sequence
  */
-final class SingleDefer<T> implements Single<T> {
+final class SingleDefer<T> extends CompletionSingle<T> {
 
     private final Supplier<? extends Single<? extends T>> supplier;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleEmpty.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleEmpty.java
index a083ab2a6..0b3e32929 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleEmpty.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleEmpty.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import java.util.concurrent.Flow;
  * invoking {@link java.util.concurrent.Flow.Subscriber#onComplete() } during
  * {@link java.util.concurrent.Flow.Publisher#subscribe(java.util.concurrent.Flow.Subscriber)}.
  */
-final class SingleEmpty implements Single<Object> {
+final class SingleEmpty extends CompletionSingle<Object> {
 
     /**
      * Singleton instance.
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleError.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleError.java
index 5ea8509c8..9200c59fc 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleError.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleError.java
@@ -26,7 +26,7 @@ import java.util.concurrent.Flow.Subscriber;
  *
  * @param <T> item type
  */
-final class SingleError<T> implements Single<T> {
+final class SingleError<T> extends CompletionSingle<T> {
 
     private final Throwable error;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFlatMapSingle.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFlatMapSingle.java
index e1ed9b96e..2cd47659d 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFlatMapSingle.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFlatMapSingle.java
@@ -27,7 +27,7 @@ import java.util.function.Function;
  * @param <T> the upstream value type
  * @param <R> the result value type
  */
-final class SingleFlatMapSingle<T, R> implements Single<R> {
+final class SingleFlatMapSingle<T, R> extends CompletionSingle<R> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromCompletionStage.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromCompletionStage.java
index ae1162ee5..aa143be07 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromCompletionStage.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromCompletionStage.java
@@ -22,7 +22,7 @@ import java.util.concurrent.Flow;
  * Signal the outcome of the give CompletionStage.
  * @param <T> the element type of the source and result
  */
-final class SingleFromCompletionStage<T> implements Single<T> {
+final class SingleFromCompletionStage<T> extends CompletionSingle<T> {
 
     private final CompletionStage<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromPublisher.java
index fd1f4f382..31c002328 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleFromPublisher.java
@@ -23,7 +23,7 @@ import java.util.concurrent.Flow;
  * an error otherwise.
  * @param <T> the element type of the flow
  */
-final class SingleFromPublisher<T> implements Single<T> {
+final class SingleFromPublisher<T> extends CompletionSingle<T> {
 
     private final Flow.Publisher<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleJust.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleJust.java
index 601095fb3..08e70f3b9 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleJust.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleJust.java
@@ -23,7 +23,7 @@ import java.util.concurrent.Flow.Subscriber;
  *
  * @param <T> item type
  */
-final class SingleJust<T> implements Single<T> {
+final class SingleJust<T> extends CompletionSingle<T> {
 
     private final T value;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleMapperPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleMapperPublisher.java
index 67789b3ac..236951919 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleMapperPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleMapperPublisher.java
@@ -25,7 +25,7 @@ import io.helidon.common.mapper.Mapper;
  * @param <T> the upstream value type
  * @param <R> the result value type
  */
-final class SingleMapperPublisher<T, R> implements Single<R> {
+final class SingleMapperPublisher<T, R> extends CompletionSingle<R> {
 
     private final Flow.Publisher<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleNever.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleNever.java
index 20127150e..ccf305605 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleNever.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleNever.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import java.util.concurrent.Flow.Subscriber;
  * {@link Subscriber#onComplete()} or
  * {@link Subscriber#onError(java.lang.Throwable)}.
  */
-final class SingleNever implements Single<Object> {
+final class SingleNever extends CompletionSingle<Object> {
 
     /**
      * Singleton instance.
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleObserveOn.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleObserveOn.java
index 4a1c90110..c9bc8ea6c 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleObserveOn.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleObserveOn.java
@@ -23,7 +23,7 @@ import java.util.concurrent.Flow;
  * Re-emit the item or terminal signals on the given executor's thread.
  * @param <T> the element type
  */
-final class SingleObserveOn<T> implements Single<T> {
+final class SingleObserveOn<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResume.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResume.java
index 9c7279df8..9e2b6d00f 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResume.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResume.java
@@ -24,7 +24,7 @@ import java.util.function.Function;
  * If the upstream fails, generate a fallback success item via a function.
  * @param <T> the element type of the sequence
  */
-final class SingleOnErrorResume<T> implements Single<T> {
+final class SingleOnErrorResume<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResumeWith.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResumeWith.java
index 65d300a0d..63d292665 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResumeWith.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleOnErrorResumeWith.java
@@ -25,7 +25,7 @@ import java.util.function.Function;
  * If the upstream fails, generate a fallback Single and emit its signals.
  * @param <T> the element type of the source and fallback
  */
-final class SingleOnErrorResumeWith<T> implements Single<T> {
+final class SingleOnErrorResumeWith<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleRetry.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleRetry.java
index 39d615a9e..96e2ff632 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleRetry.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleRetry.java
@@ -29,7 +29,7 @@ import java.util.function.BiPredicate;
  * @param <T> the element type of the source
  * @param <U> the signal type of the publisher indicating when to retry
  */
-final class SingleRetry<T, U> implements Single<T> {
+final class SingleRetry<T, U> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleSwitchIfEmpty.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleSwitchIfEmpty.java
index 80abd94a3..940b930e0 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleSwitchIfEmpty.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleSwitchIfEmpty.java
@@ -24,7 +24,7 @@ import java.util.concurrent.atomic.AtomicReference;
  * Switch to another Single if the main is empty.
  * @param <T> the element type
  */
-final class SingleSwitchIfEmpty<T> implements Single<T> {
+final class SingleSwitchIfEmpty<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTakeUntilPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTakeUntilPublisher.java
index 2cc970977..dfe537f69 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTakeUntilPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTakeUntilPublisher.java
@@ -25,7 +25,7 @@ import java.util.concurrent.Flow;
  * @param <T> the upstream and output value type
  * @param <U> the other sequence indicating when the main sequence should stop
  */
-final class SingleTakeUntilPublisher<T, U> implements Single<T> {
+final class SingleTakeUntilPublisher<T, U> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTappedPublisher.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTappedPublisher.java
index 96e19e284..e097b181b 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTappedPublisher.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTappedPublisher.java
@@ -31,7 +31,7 @@ import io.helidon.common.reactive.MultiTappedPublisher.RunnableChain;
  * user callbacks.
  * @param <T> the element type of the sequence
  */
-final class SingleTappedPublisher<T> implements Single<T> {
+final class SingleTappedPublisher<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimeout.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimeout.java
index 6ba99ec50..afab5d7e4 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimeout.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimeout.java
@@ -31,7 +31,7 @@ import java.util.concurrent.atomic.AtomicReference;
  * or completes within a specified time window.
  * @param <T> the element type
  */
-final class SingleTimeout<T> implements Single<T> {
+final class SingleTimeout<T> extends CompletionSingle<T> {
 
     private final Single<T> source;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimer.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimer.java
index de01bfbe1..4a6702fcc 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimer.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleTimer.java
@@ -24,7 +24,7 @@ import java.util.concurrent.TimeUnit;
 /**
  * Signal 0L and complete after the specified time.
  */
-final class SingleTimer implements Single<Long> {
+final class SingleTimer extends CompletionSingle<Long> {
 
     private final long time;
 
diff --git a/common/reactive/src/main/java/io/helidon/common/reactive/SingleToFuture.java b/common/reactive/src/main/java/io/helidon/common/reactive/SingleToFuture.java
index ab6de5397..1fc02c929 100644
--- a/common/reactive/src/main/java/io/helidon/common/reactive/SingleToFuture.java
+++ b/common/reactive/src/main/java/io/helidon/common/reactive/SingleToFuture.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,11 @@ import java.util.concurrent.atomic.AtomicReference;
 final class SingleToFuture<T> extends CompletableFuture<T> implements Subscriber<T> {
 
     private final AtomicReference<Subscription> ref = new AtomicReference<>();
+    private final boolean completeWithoutValue;
+
+    SingleToFuture(boolean completeWithoutValue) {
+        this.completeWithoutValue = completeWithoutValue;
+    }
 
     @Override
     public boolean cancel(boolean mayInterruptIfRunning) {
@@ -71,7 +76,11 @@ final class SingleToFuture<T> extends CompletableFuture<T> implements Subscriber
     @Override
     public void onComplete() {
         if (ref.getAndSet(null) != null) {
-            super.completeExceptionally(new IllegalStateException("Completed without value"));
+            if (completeWithoutValue) {
+                super.complete(null);
+            } else {
+                super.completeExceptionally(new IllegalStateException("Completed without value"));
+            }
         }
     }
 
diff --git a/common/reactive/src/test/java/io/helidon/common/reactive/AwaitTest.java b/common/reactive/src/test/java/io/helidon/common/reactive/AwaitTest.java
new file mode 100644
index 000000000..c3c2b2e25
--- /dev/null
+++ b/common/reactive/src/test/java/io/helidon/common/reactive/AwaitTest.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c)  2020 Oracle and/or its affiliates.
+ *
+ * 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 io.helidon.common.reactive;
+
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicLong;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.testng.Assert.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+public class AwaitTest {
+
+    private static final long EXPECTED_SUM = 10L;
+    private static final long SAFE_WAIT_MILLIS = 200L;
+
+    @Test
+    void forEachAwait() {
+        AtomicLong sum = new AtomicLong();
+        testMulti()
+                .forEach(sum::addAndGet)
+                .await();
+        assertThat(sum.get(), equalTo(EXPECTED_SUM));
+    }
+
+    @Test
+    void forEachAwaitChain() {
+        AtomicLong sum = new AtomicLong();
+        AtomicLong completedTimes = new AtomicLong();
+        testMulti()
+                .forEach(sum::addAndGet)
+                .whenComplete((aVoid, throwable) -> completedTimes.incrementAndGet())
+                .whenComplete((aVoid, throwable) -> completedTimes.incrementAndGet())
+                .whenComplete((aVoid, throwable) -> completedTimes.incrementAndGet())
+                .thenRun(completedTimes::incrementAndGet)
+                .thenAccept(aVoid -> completedTimes.incrementAndGet())
+                .await();
+        assertThat(sum.get(), equalTo(EXPECTED_SUM));
+        assertThat(completedTimes.get(), is(5L));
+    }
+
+    @Test
+    void forEachWhenComplete() throws InterruptedException, ExecutionException, TimeoutException {
+        AtomicLong sum = new AtomicLong();
+        CompletableFuture<Void> completeFuture = new CompletableFuture<>();
+        testMulti()
+                .forEach(sum::addAndGet)
+
+                .whenComplete((aVoid, throwable) -> Optional.ofNullable(throwable)
+                        .ifPresentOrElse(completeFuture::completeExceptionally, () -> completeFuture.complete(null)));
+        completeFuture.get(SAFE_WAIT_MILLIS, TimeUnit.MILLISECONDS);
+        assertThat(sum.get(), equalTo(EXPECTED_SUM));
+    }
+
+    @Test
+    void forEachAwaitTimeout() {
+        AtomicLong sum = new AtomicLong();
+        testMulti()
+                .forEach(sum::addAndGet)
+                .await(SAFE_WAIT_MILLIS, TimeUnit.MILLISECONDS);
+        assertThat(sum.get(), equalTo(EXPECTED_SUM));
+    }
+
+    @Test
+    void forEachCancel() throws Exception {
+        CountDownLatch latch = new CountDownLatch(1);
+        CompletableFuture<Void> cancelled = new CompletableFuture<>();
+        Single<Void> single = testMulti()
+                .onCancel(() -> cancelled.complete(null))
+                .forEach(l -> latch.countDown());
+
+        single.cancel();
+        // Wait for 1 item out of 5
+        latch.await(50, TimeUnit.MILLISECONDS);
+        // Expect cancel eventually(100 millis had to be enough)
+        cancelled.get(100, TimeUnit.MILLISECONDS);
+    }
+
+    @Test
+    void forEachAwaitTimeoutNegative() {
+        assertThrows(CompletionException.class, () -> testMulti()
+                .forEach(TestConsumer.noop())
+                .await(10, TimeUnit.MILLISECONDS));
+    }
+
+    @Test
+    void singleAwait() {
+        assertThat(testSingle().await(), equalTo(EXPECTED_SUM));
+    }
+
+    @Test
+    void singleAwaitTimeout() {
+        assertThat(testSingle().await(SAFE_WAIT_MILLIS, TimeUnit.MILLISECONDS), equalTo(EXPECTED_SUM));
+    }
+
+    @Test
+    void singleAwaitTimeoutNegative() {
+        assertThrows(CompletionException.class, () -> testSingle().await(10, TimeUnit.MILLISECONDS));
+    }
+
+    /**
+     * Return stream of 5 long numbers 0,1,2,3,4 emitted in interval of 20 millis,
+     * whole stream should be finished shortly after 100 millis.
+     *
+     * @return {@link io.helidon.common.reactive.Multi<Long>}
+     */
+    private Multi<Long> testMulti() {
+        return Multi.interval(20, TimeUnit.MILLISECONDS, Executors.newSingleThreadScheduledExecutor())
+                .limit(5);
+    }
+
+    private Single<Long> testSingle() {
+        return testMulti().reduce(Long::sum);
+    }
+}
diff --git a/common/reactive/src/test/java/io/helidon/common/reactive/SingleTest.java b/common/reactive/src/test/java/io/helidon/common/reactive/SingleTest.java
index 5df7f48ca..fd868f102 100644
--- a/common/reactive/src/test/java/io/helidon/common/reactive/SingleTest.java
+++ b/common/reactive/src/test/java/io/helidon/common/reactive/SingleTest.java
@@ -15,6 +15,7 @@
  */
 package io.helidon.common.reactive;
 
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Flow.Subscriber;
 import java.util.concurrent.Flow.Subscription;
@@ -289,7 +290,7 @@ public class SingleTest {
 
     @Test
     public void testBadSingleToFuture() throws InterruptedException, TimeoutException {
-        Single<String> single = new Single<String>() {
+        Single<String> single = new CompletionSingle<String>() {
             @Override
             public void subscribe(Subscriber<? super String> subscriber) {
                 throw new IllegalStateException("foo!");
@@ -313,7 +314,7 @@ public class SingleTest {
 
     @Test
     public void testToFutureDoubleOnError() throws InterruptedException, TimeoutException {
-        Single<String> single = new Single<String>() {
+        Single<String> single = new CompletionSingle<String>() {
             @Override
             public void subscribe(Subscriber<? super String> subscriber) {
                 subscriber.onSubscribe(new Subscription() {
@@ -338,7 +339,7 @@ public class SingleTest {
 
     @Test
     public void testToFutureDoubleOnNext() throws InterruptedException, ExecutionException {
-        Single<String> single = new Single<String>() {
+        Single<String> single = new CompletionSingle<String>() {
             @Override
             public void subscribe(Subscriber<? super String> subscriber) {
                 subscriber.onSubscribe(new Subscription() {
@@ -386,7 +387,7 @@ public class SingleTest {
     public void testToFutureDoubleOnSubscribe() throws InterruptedException, ExecutionException {
         TestSubscription subscription1 = new TestSubscription();
         TestSubscription subscription2 = new TestSubscription();
-        Single<String> single = new Single<String>() {
+        Single<String> single = new CompletionSingle<String>() {
             @Override
             public void subscribe(Subscriber<? super String> subscriber) {
                 subscriber.onSubscribe(subscription1);
diff --git a/common/reactive/src/test/java/io/helidon/common/reactive/TestConsumer.java b/common/reactive/src/test/java/io/helidon/common/reactive/TestConsumer.java
index 018b4d762..d473be6dd 100644
--- a/common/reactive/src/test/java/io/helidon/common/reactive/TestConsumer.java
+++ b/common/reactive/src/test/java/io/helidon/common/reactive/TestConsumer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,4 +28,8 @@ class TestConsumer<T> implements Consumer<T> {
     public void accept(T t) {
         item = t;
     }
+
+    static <T> Consumer<T> noop(){
+        return t -> {};
+    }
 }
diff --git a/media/common/src/main/java/io/helidon/media/common/MessageBodyReaderContext.java b/media/common/src/main/java/io/helidon/media/common/MessageBodyReaderContext.java
index 5ada119ba..869d2eb50 100644
--- a/media/common/src/main/java/io/helidon/media/common/MessageBodyReaderContext.java
+++ b/media/common/src/main/java/io/helidon/media/common/MessageBodyReaderContext.java
@@ -31,6 +31,7 @@ import io.helidon.common.GenericType;
 import io.helidon.common.http.DataChunk;
 import io.helidon.common.http.MediaType;
 import io.helidon.common.http.ReadOnlyParameters;
+import io.helidon.common.reactive.CompletionSingle;
 import io.helidon.common.reactive.Multi;
 import io.helidon.common.reactive.Single;
 
@@ -396,7 +397,7 @@ public final class MessageBodyReaderContext extends MessageBodyContext implement
      * Single from future.
      * @param <T> item type
      */
-    private static final class SingleFromCompletionStage<T> implements Single<T> {
+    private static final class SingleFromCompletionStage<T> extends CompletionSingle<T> {
 
         private final CompletionStage<? extends T> future;
         private Subscriber<? super T> subscriber;