{"id":44297,"date":"2023-02-07T08:00:32","date_gmt":"2023-06-06T13:11:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8golang%e5%bc%80%e5%a7%8bgrpc\/"},"modified":"2024-04-29T13:29:53","modified_gmt":"2024-04-29T05:29:53","slug":"%e7%94%a8golang%e5%bc%80%e5%a7%8bgrpc","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8golang%e5%bc%80%e5%a7%8bgrpc\/","title":{"rendered":"\u7528Golang\u5f00\u59cbgRPC"},"content":{"rendered":"<h1>\u7b80\u800c\u8a00\u4e4b<\/h1>\n<p>gRPC\u662f\u4e00\u4e2a\u73b0\u4ee3\u5316\u4e14\u9ad8\u6027\u80fd\u7684\u5f00\u6e90RPC\uff08\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff09\u6846\u67b6\uff0c\u53ef\u5728\u4efb\u4f55\u73af\u5883\u4e2d\u8fd0\u884c\u3002\u5b83\u4f7f\u7528Protocol Buffers\u6765\u5e8f\u5217\u5316\u6570\u636e\uff0c\u4ece\u800c\u5b9e\u73b0\u5feb\u901f\u901a\u4fe1\u3002\u5b83\u80fd\u591f\u9002\u5e94\u5404\u79cd\u8bed\u8a00\u548c\u5e73\u53f0\uff0c\u5e76\u652f\u6301\u57fa\u4e8ehttp\/2\u7684\u53cc\u5411\u6d41\u4f20\u8f93\u3002\u4f7f\u7528Protocol Buffers\u53ef\u4ee5\u7b80\u5355\u5730\u5b9a\u4e49\u670d\u52a1\uff08\u7528\u4e8e\u901a\u4fe1\u7684\u6570\u636e\u548c\u51fd\u6570\uff09\uff0c\u5e76\u53ef\u4ee5\u660e\u786e\u5b9a\u4e49API\u89c4\u8303\u3002<\/p>\n<p>\u203b\u672c\u7ae0\u5185\u5bb9\u53c2\u8003\u81eagRPC\u3002<\/p>\n<p>Git\uff1ak-washi\/example-golang-gRPC<\/p>\n<h1>\u5f00\u59cb\u9879\u76ee<\/h1>\n<h2>VSCode\u7684\u8bbe\u7f6e<\/h2>\n<ul class=\"post-ul\">vscode-proto3 &amp; Clang-Format extensions \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/ul>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u81ea\u52a8\u683c\u5f0f\u5316\u6587\u4ef6\uff0c\u4f60\u8fd8\u9700\u8981\u8bbe\u7f6e\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<ul class=\"post-ul\">Clang-Format\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/ul>\n<pre class=\"post-pre\"><code>brew <span class=\"nb\">install <\/span>clang-format <span class=\"c\">#MacOSX<\/span>\r\n\r\n<span class=\"c\">#other OS  <\/span>\r\n<span class=\"c\">#http:\/\/www.codepool.biz\/vscode-format-c-code-windows-linux.html<\/span>\r\n<\/code><\/pre>\n<h2>Protocol buffers\u8bbe\u7f6e<\/h2>\n<p>\u5b89\u88c5Protocol Buffers<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># MacOSX<\/span>\r\nbrew <span class=\"nb\">install <\/span>protobuf <span class=\"c\">#MacOSX<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c\"># Linux<\/span>\r\n<span class=\"c\">#https:\/\/github.com\/google\/protobuf\/releases<\/span>\r\n\r\n<span class=\"c\">#example<\/span>\r\n<span class=\"c\"># Make sure you grab the latest version<\/span>\r\ncurl <span class=\"nt\">-OL<\/span> https:\/\/github.com\/google\/protobuf\/releases\/download\/v3.5.1\/protoc-3.5.1-linux-x86_64.zip\r\n<span class=\"c\"># Unzip<\/span>\r\nunzip protoc-3.5.1-linux-x86_64.zip <span class=\"nt\">-d<\/span> protoc3\r\n<span class=\"c\"># Move protoc to \/usr\/local\/bin\/<\/span>\r\n<span class=\"nb\">sudo mv <\/span>protoc3\/bin\/<span class=\"k\">*<\/span> \/usr\/local\/bin\/\r\n<span class=\"c\"># Move protoc3\/include to \/usr\/local\/include\/<\/span>\r\n<span class=\"nb\">sudo mv <\/span>protoc3\/include\/<span class=\"k\">*<\/span> \/usr\/local\/include\/\r\n<span class=\"c\"># Optional: change owner<\/span>\r\n<span class=\"nb\">sudo chown<\/span> <span class=\"o\">[<\/span>user] \/usr\/local\/bin\/protoc\r\n<span class=\"nb\">sudo chown<\/span> <span class=\"nt\">-R<\/span> <span class=\"o\">[<\/span>user] \/usr\/local\/include\/google\r\n<\/code><\/pre>\n<h2>Golang\u7684\u914d\u7f6e<\/h2>\n<p>\u5b89\u88c5\u8f6f\u4ef6\u5305\u3002<\/p>\n<pre class=\"post-pre\"><code>go get <span class=\"nt\">-u<\/span> google.golang.org\/grpc\r\ngo get <span class=\"nt\">-d<\/span> <span class=\"nt\">-u<\/span> github.com\/golang\/protobuf\/protoc-gen-go\r\n<\/code><\/pre>\n<h2>\u786e\u8ba4\u6267\u884c<\/h2>\n<p>\u9996\u5148\uff0c\u5b9a\u4e49\u670d\u52a1\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">syntax<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"proto3\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kn\">package<\/span> <span class=\"nn\">greet<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">option<\/span> <span class=\"na\">go_package<\/span><span class=\"o\">=<\/span><span class=\"s\">\"greetpb\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">service<\/span> <span class=\"n\">GreetService<\/span><span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\uff0c\u5c06\u6b64\u5b9a\u4e49\u6587\u4ef6\u8f6c\u6362\u4e3a\u9002\u7528\u4e8egolang\u7684\u534f\u8bae\u7f13\u51b2\u533a\uff08greet.pb.go\uff09\u3002\u901a\u8fc7\u5728golang\u7684\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e2d\u4f7f\u7528\u6b64\u8f6c\u6362\u540e\u7684\u5e93\u6587\u4ef6\uff08greet.pb.go\uff09\u4e2d\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u901a\u8fc7gRPC\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n<pre class=\"post-pre\"><code>protoc greet\/greetpb\/greet.proto  <span class=\"nt\">--go_out<\/span><span class=\"o\">=<\/span><span class=\"nv\">plugins<\/span><span class=\"o\">=<\/span>grpc:.\r\n<\/code><\/pre>\n<p>\u5ba2\u6237\u7aef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5efa\u7acb\u8fde\u63a5\u5e76\u4f7f\u7528\u5ba2\u6237\u7aefAPI\uff08NewGreetServiceClient\uff09\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n  <span class=\"c\">\/\/protocol buffers\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc<\/span>\r\n    <span class=\"s\">\"github.com\/k-washi\/example-golang-gRPC\/greet\/greetpb\"<\/span>\r\n    <span class=\"s\">\"google.golang.org\/grpc\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello. I'm a client\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">conn<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">Dial<\/span><span class=\"p\">(<\/span><span class=\"s\">\"localhost:50051\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">WithInsecure<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Could not connect: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">defer<\/span> <span class=\"n\">conn<\/span><span class=\"o\">.<\/span><span class=\"n\">Close<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">c<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">NewGreetServiceClient<\/span><span class=\"p\">(<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Created client %f\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">c<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u670d\u52a1\u5668\u5b9a\u4e49\u4e86\u4e00\u4e2aserver\u7ed3\u6784\u4f53\uff0c\u5c06\u670d\u52a1\u6ce8\u518c\u5230\u670d\u52a1\u5668\u4e0a\uff0c\u7136\u540e\u542f\u52a8\u670d\u52a1\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n    <span class=\"s\">\"net\"<\/span>\r\n    <span class=\"s\">\"github.com\/k-washi\/example-golang-gRPC\/greet\/greetpb\"<\/span>\r\n    <span class=\"s\">\"google.golang.org\/grpc\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">server<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">lis<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">net<\/span><span class=\"o\">.<\/span><span class=\"n\">Listen<\/span><span class=\"p\">(<\/span><span class=\"s\">\"tcp\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\":50051\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Failed to listen: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">s<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">NewServer<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">RegisterGreetServiceServer<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">server<\/span><span class=\"p\">{})<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"n\">Serve<\/span><span class=\"p\">(<\/span><span class=\"n\">lis<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"failed to serve: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff0c\u542f\u52a8\u670d\u52a1\u5668\u5e76\u6267\u884c\u5ba2\u6237\u7aef\u4ee5\u8fdb\u884c\u786e\u8ba4\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"c\">#server setup<\/span>\r\ngo run greet\/greet_server\/server.go \r\n\r\n<span class=\"c\">#client setup<\/span>\r\ngo run greet\/greet_client\/client.go\r\n<\/code><\/pre>\n<h1>\u901a\u4fe1\u65b9\u5f0f<\/h1>\n<p>gRPC\u63d0\u4f9b\u591a\u79cd\u901a\u4fe1\u65b9\u5f0f\uff0c\u6839\u636e\u6570\u636e\u7279\u6027\u9700\u8981\u7075\u6d3b\u9009\u62e9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Unary &#8211; \u3082\u3063\u3068\u3082\u4e00\u822c\u7684\u306agRPC\u306eAPI\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u30e1\u30c3\u30bb\u30fc\u30b81\u3064\u306b\u5bfe\u3057\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u306f1\u56de\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8fd4\u3059<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Server streaming &#8211; HTTP\/2\u306e\u6069\u6075\u3092\u53d7\u3051\u305fAPI\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u30e1\u30c3\u30bb\u30fc\u30b81\u3064\u306b\u5bfe\u3057\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u8907\u6570\u56de\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8fd4\u3059<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Client streaming &#8211; HTTP\/2\u306e\u6069\u6075\u3092\u53d7\u3051\u305fAPI\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u8907\u6570\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u5bfe\u3057\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u306f1\u56de\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8fd4\u3059<\/ul>\n<h2>\u670d\u52a1\u7684\u5b9a\u4e49<\/h2>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5b9a\u4e49\u53d1\u9001\u6d88\u606f\u7684\u7c7b\u578b<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5b9a\u4e49\u4e00\u5143\u3001\u670d\u52a1\u5668\u6d41\u5f0f\u4f20\u8f93\u3001\u5ba2\u6237\u7aef\u6d41\u5f0f\u4f20\u8f93\u7684\u8bf7\u6c42\u548c\u54cd\u5e94\u6d88\u606f\u7684\u7c7b\u578b<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5c06\u670d\u52a1\u5b9a\u4e49\u4e3a rpc \u670d\u52a1\u540d\u79f0\uff08\u6d41\u5f0f\u5ba2\u6237\u7aef\u7c7b\u578b\uff09returns\uff08\u6d41\u5f0f\u54cd\u5e94\u7c7b\u578b\uff09{}\u3002\u5bf9\u4e8e\u9700\u8981\u591a\u6b21\u53d1\u9001\u7684\u670d\u52a1\u6d88\u606f\uff0c\u6dfb\u52a0 stream\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c06\u5176\u8f6c\u6362\u4e3a\u534f\u8bae\u7f13\u51b2\u533a\u3002<\/ol>\n<pre class=\"post-pre\"><code>protoc streaming\/greetpb\/greet.proto  <span class=\"nt\">--go_out<\/span><span class=\"o\">=<\/span><span class=\"nv\">plugins<\/span><span class=\"o\">=<\/span>grpc:.\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"na\">syntax<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"proto3\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kn\">package<\/span> <span class=\"nn\">greet<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">option<\/span> <span class=\"na\">go_package<\/span><span class=\"o\">=<\/span><span class=\"s\">\"greetpb\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/\u30ea\u30af\u30a8\u30b9\u30c8\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u578b\u3092\u5b9a\u7fa9<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">Greeting<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">first_name<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">last_name<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Unary \u30ea\u30af\u30a8\u30b9\u30c8<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">GreetRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">Greeting<\/span> <span class=\"na\">greeting<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Unary \u30ec\u30b9\u30dd\u30f3\u30b9<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">GreetResponse<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">result<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Server streaming \u30ea\u30af\u30a8\u30b9\u30c8<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">GreetManyTimesRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">Greeting<\/span> <span class=\"na\">greeting<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Server streaming \u30ec\u30b9\u30dd\u30f3\u30b9<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">GreetManyTimesResponse<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">result<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Client streaming \u30ea\u30af\u30a8\u30b9\u30c8<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">LongGreetRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">Greeting<\/span> <span class=\"na\">greeting<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Client streaming \u30ec\u30b9\u30dd\u30f3\u30b9<\/span>\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">LongGreetResponse<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">result<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30b5\u30fc\u30d3\u30b9\u306e\u5b9a\u7fa9<\/span>\r\n<span class=\"kd\">service<\/span> <span class=\"n\">GreetService<\/span><span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/Unary<\/span>\r\n  <span class=\"k\">rpc<\/span> <span class=\"n\">Greet<\/span><span class=\"p\">(<\/span><span class=\"n\">GreetRequest<\/span><span class=\"p\">)<\/span> <span class=\"k\">returns<\/span> <span class=\"p\">(<\/span><span class=\"n\">GreetResponse<\/span><span class=\"p\">)<\/span> <span class=\"p\">{};<\/span>\r\n\r\n  <span class=\"c1\">\/\/Server Streaming<\/span>\r\n  <span class=\"k\">rpc<\/span> <span class=\"n\">GreetManyTimes<\/span><span class=\"p\">(<\/span><span class=\"n\">GreetManyTimesRequest<\/span><span class=\"p\">)<\/span> <span class=\"k\">returns<\/span> <span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">GreetManyTimesResponse<\/span><span class=\"p\">)<\/span> <span class=\"p\">{};<\/span>\r\n\r\n  <span class=\"c1\">\/\/Client Streaming<\/span>\r\n  <span class=\"k\">rpc<\/span> <span class=\"n\">LongGreet<\/span><span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">LongGreetRequest<\/span><span class=\"p\">)<\/span> <span class=\"k\">returns<\/span> <span class=\"p\">(<\/span><span class=\"n\">LongGreetResponse<\/span><span class=\"p\">)<\/span> <span class=\"p\">{};<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u5ba2\u6237<\/h2>\n<p>\u4f7f\u7528Golang\u5b9e\u73b0Unary\u3001Server streaming\u548cClient streaming\u7684\u5ba2\u6237\u7aef\u3002\u57fa\u672c\u4e0a\uff0c\u6839\u636e\u670d\u52a1\u5b9a\u4e49\u521b\u5efa\u6570\u636e\u7c7b\u578b\uff0c\u53d1\u9001\u8bf7\u6c42\uff0c\u7136\u540e\u7b49\u5f85\u54cd\u5e94\u7684\u5f62\u5f0f\u3002\u8fd9\u4e9b\u64cd\u4f5c\u9700\u8981\u4f7f\u7528protocol buffers\u5e93\u4e2d\u7684\u5305\u3002\u5982\u679c\u9700\u8981\u7b49\u5f85\u670d\u52a1\u5668\u7684\u591a\u4e2a\u6d88\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u8bed\u6cd5\uff08for\uff09\u8fdb\u884c\u63a5\u6536\u5e76\u5e94\u7528\u3002\u5982\u679c\u9700\u8981\u5411\u670d\u52a1\u5668\u53d1\u9001\u591a\u4e2a\u6d88\u606f\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u8bed\u6cd5\uff0c\u4f46\u57fa\u672c\u4e0a\u53ea\u662f\u6309\u7167\u6bcf\u6761\u6d88\u606f\u53d1\u9001\u3002\u6709\u5173gRPC\u7684\u9519\u8bef\uff0c\u53ef\u4ee5\u4f7f\u7528&#8221;google.golang.org\/grpc\/status&#8221;\u5e93\u8fdb\u884c\u63d0\u53d6\u548c\u5b9a\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"io\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n    <span class=\"s\">\"time\"<\/span>\r\n\r\n    <span class=\"s\">\"google.golang.org\/grpc\/codes\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/k-washi\/example-golang-gRPC\/streaming\/greetpb\"<\/span>\r\n    <span class=\"s\">\"google.golang.org\/grpc\"<\/span>\r\n    <span class=\"s\">\"google.golang.org\/grpc\/status\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello. I'm a client\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">conn<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">Dial<\/span><span class=\"p\">(<\/span><span class=\"s\">\"localhost:50051\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">WithInsecure<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Could not connect: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">defer<\/span> <span class=\"n\">conn<\/span><span class=\"o\">.<\/span><span class=\"n\">Close<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">c<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">NewGreetServiceClient<\/span><span class=\"p\">(<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"n\">doUnary<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">doServerStreaming<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">doClientStreaming<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">doUnary<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetServiceClient<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Starting to do a Unary RPC ...\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">req<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetRequest<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"tanaka\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"n\">LastName<\/span><span class=\"o\">:<\/span>  <span class=\"s\">\"tarou\"<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">res<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">Greet<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">(),<\/span> <span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">respErr<\/span><span class=\"p\">,<\/span> <span class=\"n\">ok<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">status<\/span><span class=\"o\">.<\/span><span class=\"n\">FromError<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">ok<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">respErr<\/span><span class=\"o\">.<\/span><span class=\"n\">Message<\/span><span class=\"p\">())<\/span>\r\n            <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">respErr<\/span><span class=\"o\">.<\/span><span class=\"n\">Code<\/span><span class=\"p\">())<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"n\">respErr<\/span><span class=\"o\">.<\/span><span class=\"n\">Code<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"n\">codes<\/span><span class=\"o\">.<\/span><span class=\"n\">InvalidArgument<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"We probably sent a empty string\"<\/span><span class=\"p\">)<\/span>\r\n\r\n            <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"k\">if<\/span> <span class=\"n\">respErr<\/span><span class=\"o\">.<\/span><span class=\"n\">Code<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"n\">codes<\/span><span class=\"o\">.<\/span><span class=\"n\">DeadlineExceeded<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Timeout was hit! Deadline was exceeded\"<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"p\">}<\/span>\r\n        <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error while calling greet rpc: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Response from greet server %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">res<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">doServerStreaming<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetServiceClient<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Starting to do a Server Streaming RPC ...\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">req<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetManyTimesRequest<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"tanaka\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"n\">LastName<\/span><span class=\"o\">:<\/span>  <span class=\"s\">\"tarou\"<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">resStream<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetManyTimes<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">(),<\/span> <span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error while calling GreetManyTImes RPC: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">msg<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">resStream<\/span><span class=\"o\">.<\/span><span class=\"n\">Recv<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">==<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">EOF<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">break<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error while reading stream: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Response from GreetManyTImes: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">msg<\/span><span class=\"o\">.<\/span><span class=\"n\">GetResult<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">doClientStreaming<\/span><span class=\"p\">(<\/span><span class=\"n\">c<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetServiceClient<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Starting to do a Client Streaming RPC\"<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"n\">requests<\/span> <span class=\"o\">:=<\/span> <span class=\"p\">[]<\/span><span class=\"o\">*<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetRequest<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetRequest<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n                <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"one\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">},<\/span>\r\n        <span class=\"p\">},<\/span>\r\n        <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetRequest<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n                <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"two\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">},<\/span>\r\n        <span class=\"p\">},<\/span>\r\n        <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetRequest<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n                <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"three\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">},<\/span>\r\n        <span class=\"p\">},<\/span>\r\n        <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetRequest<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Greeting<\/span><span class=\"o\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">Greeting<\/span><span class=\"p\">{<\/span>\r\n                <span class=\"n\">FirstName<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"four\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">},<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">stream<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreet<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Background<\/span><span class=\"p\">())<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error while calling LongGreet %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"n\">_<\/span><span class=\"p\">,<\/span> <span class=\"n\">req<\/span> <span class=\"o\">:=<\/span> <span class=\"k\">range<\/span> <span class=\"n\">requests<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Sending req: %v<\/span><span class=\"se\">\\n<\/span><span class=\"s\">\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">stream<\/span><span class=\"o\">.<\/span><span class=\"n\">Send<\/span><span class=\"p\">(<\/span><span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Sleep<\/span><span class=\"p\">(<\/span><span class=\"m\">1000<\/span> <span class=\"o\">*<\/span> <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Millisecond<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">res<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">stream<\/span><span class=\"o\">.<\/span><span class=\"n\">CloseAndRecv<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error while receiving response from LongGreet: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"LongGreet Response: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">res<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u670d\u52a1\u5668<\/h2>\n<p>\u5728 `server` \u7ed3\u6784\u4f53\u4e2d\uff0c\u4ee5\u4e0e `GreetServiceServer` \u5728 protocol buffers \u4e2d\u5b9a\u4e49\u7684\u76f8\u540c\u683c\u5f0f\u5d4c\u5165\u51fd\u6570\u3002<br \/>\n\u6d88\u606f\u7684\u53d1\u9001\u548c\u63a5\u6536\u4e5f\u4f7f\u7528\u4e86\u5728 protocol buffers \u4e2d\u5b9a\u4e49\u7684\u6d88\u606f\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6d88\u606f\u5bf9\u5e94\u7684 `Get` \u51fd\u6570\u6765\u83b7\u53d6\u8bf7\u6c42\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n\r\n<span class=\"k\">import<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"s\">\"context\"<\/span>\r\n    <span class=\"s\">\"fmt\"<\/span>\r\n    <span class=\"s\">\"io\"<\/span>\r\n    <span class=\"s\">\"log\"<\/span>\r\n    <span class=\"s\">\"net\"<\/span>\r\n    <span class=\"s\">\"strconv\"<\/span>\r\n    <span class=\"s\">\"time\"<\/span>\r\n\r\n    <span class=\"s\">\"google.golang.org\/grpc\/codes\"<\/span>\r\n    <span class=\"s\">\"google.golang.org\/grpc\/status\"<\/span>\r\n\r\n    <span class=\"s\">\"github.com\/k-washi\/example-golang-gRPC\/streaming\/greetpb\"<\/span>\r\n\r\n    <span class=\"s\">\"google.golang.org\/grpc\"<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"c\">\/\/server greet.pb.go GreetServiceClient<\/span>\r\n<span class=\"k\">type<\/span> <span class=\"n\">server<\/span> <span class=\"k\">struct<\/span><span class=\"p\">{}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">server<\/span><span class=\"p\">)<\/span> <span class=\"n\">Greet<\/span><span class=\"p\">(<\/span><span class=\"n\">ctx<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Context<\/span><span class=\"p\">,<\/span> <span class=\"n\">req<\/span> <span class=\"o\">*<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetRequest<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetResponse<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Greet func was invoked with %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">firstName<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">req<\/span><span class=\"o\">.<\/span><span class=\"n\">GetGreeting<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">GetFirstName<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">firstName<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"\"<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">status<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span>\r\n            <span class=\"n\">codes<\/span><span class=\"o\">.<\/span><span class=\"n\">InvalidArgument<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"s\">\"Recived a empty string\"<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"n\">ctx<\/span><span class=\"o\">.<\/span><span class=\"n\">Err<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"n\">context<\/span><span class=\"o\">.<\/span><span class=\"n\">Canceled<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">status<\/span><span class=\"o\">.<\/span><span class=\"n\">Error<\/span><span class=\"p\">(<\/span><span class=\"n\">codes<\/span><span class=\"o\">.<\/span><span class=\"n\">Canceled<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"the client canceld the request\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">result<\/span> <span class=\"o\">:=<\/span> <span class=\"s\">\"Hello \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">firstName<\/span>\r\n    <span class=\"c\">\/\/client config deadline<\/span>\r\n    <span class=\"c\">\/*\r\n        res := &amp;greetpb.GreetWithDeadlineResponse{\r\n            Result: result,\r\n        }\r\n    *\/<\/span>\r\n    <span class=\"n\">res<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetResponse<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">Result<\/span><span class=\"o\">:<\/span> <span class=\"n\">result<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">res<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">server<\/span><span class=\"p\">)<\/span> <span class=\"n\">GreetManyTimes<\/span><span class=\"p\">(<\/span><span class=\"n\">req<\/span> <span class=\"o\">*<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetManyTimesRequest<\/span><span class=\"p\">,<\/span> <span class=\"n\">stream<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetService_GreetManyTimesServer<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Printf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"GreetManyTimes func was invoked with %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">req<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">firstName<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">req<\/span><span class=\"o\">.<\/span><span class=\"n\">GetGreeting<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">GetFirstName<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"n\">i<\/span> <span class=\"o\">:=<\/span> <span class=\"m\">0<\/span><span class=\"p\">;<\/span> <span class=\"n\">i<\/span> <span class=\"o\">&lt;<\/span> <span class=\"m\">10<\/span><span class=\"p\">;<\/span> <span class=\"n\">i<\/span><span class=\"o\">++<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">result<\/span> <span class=\"o\">:=<\/span> <span class=\"s\">\"Hello\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">firstName<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\" number \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">strconv<\/span><span class=\"o\">.<\/span><span class=\"n\">Itoa<\/span><span class=\"p\">(<\/span><span class=\"n\">i<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">res<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetManyTimesResponse<\/span><span class=\"p\">{<\/span>\r\n            <span class=\"n\">Result<\/span><span class=\"o\">:<\/span> <span class=\"n\">result<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"n\">stream<\/span><span class=\"o\">.<\/span><span class=\"n\">Send<\/span><span class=\"p\">(<\/span><span class=\"n\">res<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Sleep<\/span><span class=\"p\">(<\/span><span class=\"m\">1000<\/span> <span class=\"o\">*<\/span> <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Millisecond<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">server<\/span><span class=\"p\">)<\/span> <span class=\"n\">LongGreet<\/span><span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">GreetService_LongGreetServer<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"LongGreet function was invoked with a streaming request\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">result<\/span> <span class=\"o\">:=<\/span> <span class=\"s\">\"\"<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">req<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">stream<\/span><span class=\"o\">.<\/span><span class=\"n\">Recv<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">==<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">EOF<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"c\">\/\/we have finished reading the client stream<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">stream<\/span><span class=\"o\">.<\/span><span class=\"n\">SendAndClose<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">LongGreetResponse<\/span><span class=\"p\">{<\/span>\r\n                <span class=\"n\">Result<\/span><span class=\"o\">:<\/span> <span class=\"n\">result<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"p\">})<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Error while reading client stream: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"n\">firstName<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">req<\/span><span class=\"o\">.<\/span><span class=\"n\">GetGreeting<\/span><span class=\"p\">()<\/span><span class=\"o\">.<\/span><span class=\"n\">GetFirstName<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"n\">result<\/span> <span class=\"o\">+=<\/span> <span class=\"s\">\"Hello \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">firstName<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"! \"<\/span>\r\n\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello World!\"<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"n\">lis<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">net<\/span><span class=\"o\">.<\/span><span class=\"n\">Listen<\/span><span class=\"p\">(<\/span><span class=\"s\">\"tcp\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"0.0.0.0:50051\"<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Failed to listen: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">s<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">grpc<\/span><span class=\"o\">.<\/span><span class=\"n\">NewServer<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">greetpb<\/span><span class=\"o\">.<\/span><span class=\"n\">RegisterGreetServiceServer<\/span><span class=\"p\">(<\/span><span class=\"n\">s<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">server<\/span><span class=\"p\">{})<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"n\">Serve<\/span><span class=\"p\">(<\/span><span class=\"n\">lis<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"failed to serve: %v\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u6587\u732e\u5f15\u7528<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">gRPC\u3063\u3066\u4f55\uff1f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Go\u3067\u59cb\u3081\u308bgRPC\u5165\u9580<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u4eca\u304b\u3089\u5b66\u3076gRPC\u306e\u57fa\u790e<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u800c\u8a00\u4e4b gRPC\u662f\u4e00\u4e2a\u73b0\u4ee3\u5316\u4e14\u9ad8\u6027\u80fd\u7684\u5f00\u6e90RPC\uff08\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff09\u6846\u67b6\uff0c\u53ef\u5728\u4efb\u4f55\u73af\u5883\u4e2d\u8fd0\u884c\u3002\u5b83\u4f7f\u7528Protoc [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44297","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u7528Golang\u5f00\u59cbgRPC - Blog - Silicon Cloud<\/title>\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.silicloud.com\/zh\/blog\/\u7528golang\u5f00\u59cbgrpc\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u7528Golang\u5f00\u59cbgRPC\" \/>\n<meta property=\"og:description\" content=\"\u7b80\u800c\u8a00\u4e4b gRPC\u662f\u4e00\u4e2a\u73b0\u4ee3\u5316\u4e14\u9ad8\u6027\u80fd\u7684\u5f00\u6e90RPC\uff08\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff09\u6846\u67b6\uff0c\u53ef\u5728\u4efb\u4f55\u73af\u5883\u4e2d\u8fd0\u884c\u3002\u5b83\u4f7f\u7528Protoc [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528golang\u5f00\u59cbgrpc\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-06T13:11:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T05:29:53+00:00\" \/>\n<meta name=\"author\" content=\"\u6587, \u7fd4\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6587, \u7fd4\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" 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