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stub: Deprecate StreamObservers #10654

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Merged
temawi merged 2 commits into from
Nov 8, 2023
Merged

stub: Deprecate StreamObservers #10654

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ba8468b
stub: Deprecate StreamObservers
temawi Nov 8, 2023
ac1cd7b
Suppress deprecation in benchmark
temawi Nov 8, 2023
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7 changes: 4 additions & 3 deletions benchmarks/src/main/java/io/grpc/benchmarks/qps/AsyncServer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,6 @@
import io.grpc.netty.NettyServerBuilder;
import io.grpc.stub.ServerCallStreamObserver;
import io.grpc.stub.StreamObserver;
import io.grpc.stub.StreamObservers;
import io.grpc.testing.TlsTesting;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.ServerChannel;
Expand Down Expand Up @@ -282,6 +281,7 @@ public void onCompleted() {
}

@Override
@SuppressWarnings("deprecation") // For StreamObservers, ideally we refactor this class out.
public void streamingFromServer(
final Messages.SimpleRequest request,
final StreamObserver<Messages.SimpleResponse> observer) {
Expand All @@ -291,7 +291,7 @@ public void streamingFromServer(
(ServerCallStreamObserver<Messages.SimpleResponse>) observer;
// If the client cancels, copyWithFlowControl takes care of calling
// responseObserver.onCompleted() for us
StreamObservers.copyWithFlowControl(
io.grpc.stub.StreamObservers.copyWithFlowControl(
new Iterator<Messages.SimpleResponse>() {
@Override
public boolean hasNext() {
Expand All @@ -312,14 +312,15 @@ public void remove() {
}

@Override
@SuppressWarnings("deprecation") // For StreamObservers, ideally we refactor this class out.
public StreamObserver<Messages.SimpleRequest> streamingBothWays(
final StreamObserver<Messages.SimpleResponse> observer) {
// receive data forever and send data forever until client cancels or we shut down.
final ServerCallStreamObserver<Messages.SimpleResponse> responseObserver =
(ServerCallStreamObserver<Messages.SimpleResponse>) observer;
// If the client cancels, copyWithFlowControl takes care of calling
// responseObserver.onCompleted() for us
StreamObservers.copyWithFlowControl(
io.grpc.stub.StreamObservers.copyWithFlowControl(
new Iterator<Messages.SimpleResponse>() {
@Override
public boolean hasNext() {
Expand Down
3 changes: 3 additions & 0 deletions stub/src/main/java/io/grpc/stub/StreamObservers.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,10 @@
/**
* Utility functions for working with {@link StreamObserver} and it's common subclasses like
* {@link CallStreamObserver}.
*
* @deprecated Of questionable utility and generally not used.
*/
@Deprecated
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/4694")
public final class StreamObservers {
/**
Expand Down