ReadBlog: Client Implementation

The ReadBlog method on the client side is responsible for fetching a specific blog post from the server based on its ID. Here’s a detailed implementation:

1. Create a Client Stub

Create a gRPC client stub using the generated Java classes.

Java

BlogServiceGrpc.BlogServiceBlockingStub stub = BlogServiceGrpc.newBlockingStub(channel);

2. Create a GetBlogPostRequest Object

Create a GetBlogPostRequest object with the desired blog post ID.

Java

GetBlogPostRequest request = GetBlogPostRequest.newBuilder().setId(blogPostId).build();

3. Call the ReadBlog Method

Call the ReadBlog method on the client stub, passing the GetBlogPostRequest object as an argument.

Java

BlogPost response = stub.readBlogPost(request);

4. Handle the Response

Handle the response from the server. If the request was successful, the response will contain the blog post.

Java

if (response != null) {
    System.out.println("Blog post retrieved successfully: " + response.getTitle());
} else {
    System.err.println("Blog post not found");
}

Complete Example

Java

public class BlogClient {
    public static void main(String[] args) throws IOException, InterruptedException {
        ManagedChannel channel = ManagedChannelBuilder.forAddress("localhost", 50051)   
                .usePlaintext()
                .build();

        BlogServiceGrpc.BlogServiceBlockingStub stub = BlogServiceGrpc.newBlockingStub(channel);   

        String blogPostId = "123"; // Replace with the actual blog post ID

        GetBlogPostRequest request = GetBlogPostRequest.newBuilder().setId(blogPostId).build();

        BlogPost response = stub.readBlogPost(request);

        if (response != null) {
            System.out.println("Blog post retrieved successfully: " + response.getTitle());
            System.out.println("Content: " + response.getContent());
        } else {
            System.err.println("Blog post not found");
        }

        channel.shutdownNow().awaitTermination(5, TimeUnit.SECONDS);
    }
}