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前言

上一篇【.Net Core微服務入門全紀錄(八)——Docker Compose與容器網路】完成了docker-compose.yml檔案的編寫,最後使用docker compose的一個up指令即可在docker中執行整個複雜的環境。本篇簡單介紹一下Ocelot與Swagger的整合,方便在閘道器專案中統一檢視各個服務的api文件。

開始

首先,閘道器專案,服務專案 NuGet安裝Swashbuckle.AspNetCore:

服務專案

Order.API專案Startup:

public void ConfigureServices(IServiceCollection services){ services.AddSwaggerGen(c => { c.SwaggerDoc("v1", new OpenApiInfo { Title = "Order API", Version = "v1", Description = "# order service api..." }); // Set the comments path for the Swagger JSON and UI. var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml"; var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile); c.IncludeXmlComments(xmlPath); c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme() { Description = "在下框中輸入請求頭中需要新增Jwt授權Token:Bearer Token", Name = "Authorization", In = ParameterLocation.Header, Type = SecuritySchemeType.ApiKey, BearerFormat = "JWT", Scheme = "Bearer" }); c.AddSecurityRequirement(new OpenApiSecurityRequirement { { new OpenApiSecurityScheme{ Reference = new OpenApiReference { Type = ReferenceType.SecurityScheme, Id = "Bearer"} },new string[] { } } }); }); services.AddControllers(); ......}public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IHostApplicationLifetime lifetime, OrderContext orderContext){ ...... app.UseSwagger(); app.UseSwaggerUI(c => { c.SwaggerEndpoint("/swagger/v1/swagger.json", "Order API V1"); }); app.UseRouting(); ......}

開啟專案檔案Order.API.csproj,新增生成文件的配置,swagger要用到:

Product.API專案也是類似的修改,就不貼了。

閘道器專案

然後是Ocelot閘道器專案的Startup:

public void ConfigureServices(IServiceCollection services){ services.AddSwaggerGen(c => { c.SwaggerDoc("v1", new OpenApiInfo {Title = "Gateway API", Version = "v1", Description = "# gateway api..."}); }); services.AddControllers(); ......}public void Configure(IApplicationBuilder app, IWebHostEnvironment env){ app.UseSwagger(); app.UseSwaggerUI(c => { c.SwaggerEndpoint("/order/swagger/v1/swagger.json", "Order API V1"); c.SwaggerEndpoint("/product/swagger/v1/swagger.json", "Product API V1"); }); //設定Ocelot中介軟體 app.UseOcelot().Wait();}

ocelot.json配置檔案,Routes節點下增加2個路由配置,不做授權,限流,熔斷等限制:

{ "DownstreamPathTemplate": "/swagger/v1/swagger.json", "DownstreamScheme": "http", "UpstreamPathTemplate": "/product/swagger/v1/swagger.json", "UpstreamHttpMethod": [ "Get" ], "ServiceName": "ProductService", "LoadBalancerOptions": { "Type": "RoundRobin" }},{ "DownstreamPathTemplate": "/swagger/v1/swagger.json", "DownstreamScheme": "http", "UpstreamPathTemplate": "/order/swagger/v1/swagger.json", "UpstreamHttpMethod": [ "Get" ], "ServiceName": "OrderService", "LoadBalancerOptions": { "Type": "RoundRobin" }}執行測試

使用docker-compose build:

build完成後啟動:

瀏覽器訪問閘道器專案:http://localhost:9070/swagger

介面測試:

此時因為沒有授權所以返回401,為了方便獲取token,我在IDS4.AuthCenter專案增加了一個客戶端配置:

new Client{ ClientId = "postman client", ClientName = "Postman Client", AllowedGrantTypes = GrantTypes.ClientCredentials, ClientSecrets = { new Secret("postman client secret".Sha256()) }, AllowedScopes = new [] {"orderApiScope", "productApiScope"},}

使用postman獲取token:

拿到token填入文字框,格式是Bearer xxxxxx,注意空格。這裡的提示文字亂碼了,應該是在docker中執行的原因,這個不影響先不管他。

填入token後再次請求介面,就可以正常返回了:

至此,Ocelot與Swagger的整合就完成了。本篇內容比較簡單,swagger應該大部分人都用過。

最後

這個系列部落格就到此結束了,本來也就是入門級別的。再往後可能就是更深入的服務治理,比如日誌、監控、鏈路追蹤等;服務的持續整合、持續部署;容器編排(k8s);服務網格(Service Mesh)等等。。。這些都不屬於入門的範圍了。

當然,不是每個公司都適合k8s,也不是每個專案都要做微服務。為了盲目推崇某個技術而去使用它時,它便失去了原本的價值。技術本不分高低,適合自己的就是最好的。感謝關注我的小夥伴們。。。

原文地址:https://www.cnblogs.com/xhznl/p/13305767.html

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