grpc基础教程之服务创建

Java gRPC服务创建基础教程

原创已于 2022-05-06 19:42:55 修改 · 274 阅读

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#java

于 2022-05-06 17:07:39 首次发布

这篇博客介绍了在Java中使用gRPC进行简单RPC服务创建的过程。客户端发送Point请求，服务端响应Feature消息。接口调用流程包括onNext()执行响应和onCompleted()标志着接口调用结束。

接口实现：

@Override
public void getFeature(Point request, StreamObserver<Feature> responseObserver) {
  responseObserver.onNext(checkFeature(request));
  responseObserver.onCompleted();
}

...

private Feature checkFeature(Point location) {
  for (Feature feature : features) {
    if (feature.getLocation().getLatitude() == location.getLatitude()
        && feature.getLocation().getLongitude() == location.getLongitude()) {
      return feature;
    }
  }

  // No feature was found, return an unnamed feature.
  return Feature.newBuilder().setName("").setLocation(location).build();
}

Simple RPC:

客户端发起Point请求，服务端返回响应Feature message

整个接口请求响应过程：

1.执行响应过程：onNext()

2.完成接口调用：onCompleted()

@Override
public void getFeature(Point request, StreamObserver<Feature> responseObserver) {
  responseObserver.onNext(checkFeature(request));
  responseObserver.onCompleted();
}

...

private Feature checkFeature(Point location) {
  for (Feature feature : features) {
    if (feature.getLocation().getLatitude() == location.getLatitude()
        && feature.getLocation().getLongitude() == location.getLongitude()) {
      return feature;
    }
  }

  // No feature was found, return an unnamed feature.
  return Feature.newBuilder().setName("").setLocation(location).build();
}