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// Copyright 2021 The Pigweed 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
//
// https://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 dev.pigweed.pw_rpc;
import com.google.protobuf.MessageLite;
import java.util.function.BiFunction;
/**
* Represents an ongoing RPC call.
*
* <p>This call class implements all features of unary, server streaming, client streaming, and
* bidirectional streaming RPCs. It provides static methods for creating call objects for each RPC
* type.
*
* @param <RequestT> request type of the RPC; used for client or bidirectional streaming RPCs
* @param <ResponseT> response type of the RPC; used for all types of RPCs
*/
final class StreamObserverCall<RequestT extends MessageLite, ResponseT extends MessageLite>
extends AbstractCall<RequestT, ResponseT> {
private final StreamObserver<ResponseT> observer;
static <RequestT extends MessageLite, ResponseT extends MessageLite>
BiFunction<Endpoint, PendingRpc, StreamObserverCall<RequestT, ResponseT>> getFactory(
StreamObserver<ResponseT> observer) {
return (endpoint, pendingRpc) -> new StreamObserverCall<>(endpoint, pendingRpc, observer);
}
private StreamObserverCall(
Endpoint endpoint, PendingRpc rpc, StreamObserver<ResponseT> observer) {
super(endpoint, rpc);
this.observer = observer;
}
@Override
void doHandleNext(ResponseT response) {
observer.onNext(response);
}
@Override
void doHandleCompleted() {
observer.onCompleted(status());
}
@Override
void doHandleError() {
observer.onError(error());
}
}
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