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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 = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
c.IncludeXmlComments(xmlPath);
c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme()
{
Description = "在下框中輸入請求頭中需要新增Jwt授權Token:Bearer Token",
Name = "Authorization",
In = ParameterLocation.Header,
Type = SecuritySchemeType.ApiKey,
BearerFormat = "JWT",
Scheme = "Bearer"
});
c.AddSecurityRequirement(new OpenApiSecurityRequirement
{
{
new OpenApiSecurityScheme{
Reference = new OpenApiReference {
Type = ReferenceType.SecurityScheme,
Id = "Bearer"}
},new string[] { }
}
});
});
services.AddControllers();
......
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IHostApplicationLifetime lifetime, OrderContext orderContext)
{
......
app.UseSwagger();
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "Order API V1");
});
app.UseRouting();
......
}
開啟專案檔案Order.API.csproj,新增生成文件的配置,swagger要用到:
<GenerateDocumentationFile>true</GenerateDocumentationFile>
<NoWarn>$(NoWarn);1591</NoWarn>
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。。。
推薦幾個學習入口:
https://space.bilibili.com/361469957/
https://space.bilibili.com/431596483/
https://github.com/dotnet-architecture/eShopOnContainers
https://docs.microsoft.com/