{"id":135878,"date":"2024-09-13T14:38:33","date_gmt":"2024-09-13T09:08:33","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=135878"},"modified":"2024-09-13T14:38:33","modified_gmt":"2024-09-13T09:08:33","slug":"client-streaming-api-server-side-implementation","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/client-streaming-api-server-side-implementation\/","title":{"rendered":"Client Streaming API: Server-Side Implementation"},"content":{"rendered":"\n<p>Client streaming APIs in gRPC allow the client to send a stream of data to the server in response to a single request. On the server side, you need to handle the incoming stream of data and process it appropriately.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Key Components of Server-Side Implementation<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Server:<\/strong> The server handles the request and receives a stream of responses from the client.<\/li>\n\n\n\n<li><strong>Client:<\/strong> The client sends a single request to the server and sends a stream of responses.<\/li>\n\n\n\n<li><strong>StreamObserver:<\/strong> The server uses a <code>StreamObserver<\/code> to receive responses from the client.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Implementing a Server for Client Streaming APIs<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Define the Service and Messages:<\/strong> Create a <code>.proto<\/code> file to define the service and message definitions.<\/li>\n\n\n\n<li><strong>Generate Server Code:<\/strong> Use the <code>protoc<\/code> compiler to generate server code from the <code>.proto<\/code> file.<\/li>\n\n\n\n<li><strong>Implement the Service:<\/strong> Override the client streaming method in your service implementation.<\/li>\n\n\n\n<li><strong>Receive Requests:<\/strong> Use the <code>StreamObserver<\/code> interface to receive requests from the client.<\/li>\n<\/ol>\n\n\n\n<p><strong>Example<\/strong><\/p>\n\n\n\n<p>Protocol Buffers<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>syntax = \"proto3\";\n\nservice UploadService {\n  rpc UploadFile(stream UploadRequest) returns (UploadResponse) {}\n}\n\nmessage UploadRequest {\n  bytes data = 1;\n}\n\nmessage UploadResponse {\n  bool success = 1;\n  string message = 2;\n}\n<\/code><\/pre>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class UploadServiceImpl extends UploadServiceGrpc.UploadServiceImplBase {\n    @Override\n    public StreamObserver&lt;UploadRequest&gt; uploadFile(StreamObserver&lt;UploadResponse&gt; &nbsp;  responseObserver) {\n        return new StreamObserver&lt;UploadRequest&gt;() {\n            private long totalBytes = 0;\n\n            @Override\n            public void onNext(UploadRequest request) {\n                \/\/ Process the uploaded data\n                totalBytes += request.getData().size();\n                \/\/ ...\n            }\n\n            @Override\n            public void onError(Throwable t) {\n                \/\/ Handle errors\n                System.err.println(\"Error: \" + t.getMessage());\n                responseObserver.onError(t);\n            }\n\n            @Override\n            public void onCompleted() {\n                \/\/ Process the completed upload\n                UploadResponse response = UploadResponse.newBuilder().setSuccess(true).setMessage(\"Upload successful\").build();\n                responseObserver.onNext(response);\n                responseObserver.onCompleted();\n            }\n        };\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>By following these guidelines, you can effectively implement the server-side of a client streaming API in gRPC and handle the stream of data from the client.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Client streaming APIs in gRPC allow the client to send a stream of data to the server in response to a single request. On the server side, you need to handle the incoming stream of data and process it appropriately. Key Components of Server-Side Implementation Implementing a Server for Client Streaming APIs Example Protocol Buffers&#8230;<\/p>\n","protected":false},"author":16,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-135878","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Client Streaming API: Server-Side Implementation - Tutorial<\/title>\n<meta name=\"description\" content=\"Learn how to implement Client Streaming API on the server side, efficiently handling continuous data streams from clients and more.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/client-streaming-api-server-side-implementation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Client Streaming API: Server-Side Implementation - 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