Deploying ocelot to k8s

configuration to ocelot passed through a k8s volume

docker-compose.override.yml

@@ -221,9 +221,9 @@ services:
       - "15672:15672"
       - "5672:5672"
 
-  ocelotapigw:
+  apigw:
     environment:
       - ASPNETCORE_ENVIRONMENT=Development
     ports:
-      - "80"
+      - "5200:80"
 

docker-compose.yml

@@ -108,9 +108,8 @@ services:
   rabbitmq:
     image: rabbitmq:3-management-alpine
 
-  ocelotapigw:
+  apigw:
-    image: ocelotapigw
+    image: eshop/ocelotapigw
     build:
       context: .
       dockerfile: src/Apigw/OcelotApiGw/Dockerfile
-

k8s/deploy.ps1

@@ -105,6 +105,7 @@ ExecKube -cmd 'delete deployments --all'
 ExecKube -cmd 'delete services --all'
 ExecKube -cmd 'delete configmap urls'
 ExecKube -cmd 'delete configmap externalcfg'
+ExecKube -cmd 'delete configmap ocelot'
 
 # start sql, rabbitmq, frontend deployments
 if ($deployInfrastructure) {
@@ -113,6 +114,12 @@ if ($deployInfrastructure) {
 }
 
 
+Write-Host 'Deploying ocelot APIGW' -ForegroundColor Yellow
+
+ExecKube "create configmap ocelot --from-file=ocelot/configuration.json"
+ExecKube -cmd "apply -f ocelot/deployment.yaml"
+ExecKube -cmd "apply -f ocelot/service.yaml"
+
 Write-Host 'Deploying code deployments (Web APIs, Web apps, ...)' -ForegroundColor Yellow
 ExecKube -cmd 'create -f services.yaml'
 
@@ -154,7 +161,6 @@ ExecKube -cmd 'create configmap urls `
 ExecKube -cmd 'label configmap urls app=eshop'
 
 Write-Host "Deploying configuration from $configFile" -ForegroundColor Yellow
-
 ExecKube -cmd "create -f $configFile"
 
 Write-Host "Creating deployments..." -ForegroundColor Yellow
@@ -178,6 +184,7 @@ ExecKube -cmd 'set image deployments/payment payment=${registryPath}${dockerOrg}
 ExecKube -cmd 'set image deployments/webmvc webmvc=${registryPath}${dockerOrg}/webmvc:$imageTag'
 ExecKube -cmd 'set image deployments/webstatus webstatus=${registryPath}${dockerOrg}/webstatus:$imageTag'
 ExecKube -cmd 'set image deployments/webspa webspa=${registryPath}${dockerOrg}/webspa:$imageTag'
+ExecKube -cmd 'set image deployments/ocelot ocelot=${registryPath}${dockerOrg}/ocelotapigw:$imageTag'
 
 Write-Host "Execute rollout..." -ForegroundColor Yellow
 ExecKube -cmd 'rollout resume deployments/basket'
@@ -190,6 +197,7 @@ ExecKube -cmd 'rollout resume deployments/payment'
 ExecKube -cmd 'rollout resume deployments/webmvc'
 ExecKube -cmd 'rollout resume deployments/webstatus'
 ExecKube -cmd 'rollout resume deployments/webspa'
+ExecKube -cmd 'rollout resume deployments/ocelot'
 
 Write-Host "WebSPA is exposed at http://$externalDns, WebMVC at http://$externalDns/webmvc, WebStatus at http://$externalDns/webstatus" -ForegroundColor Yellow
 

k8s/ingress.yaml

@@ -13,11 +13,11 @@ spec:
       paths:
       - path: /basket-api 
         backend:
-          serviceName: basket
+          serviceName: ocelot
           servicePort: 80
       - path: /catalog-api 
         backend:
-          serviceName: catalog
+          serviceName: ocelot
           servicePort: 80
       - path: /identity
         backend:
@@ -25,7 +25,7 @@ spec:
           servicePort: 80
       - path: /ordering-api
         backend:
-          serviceName: ordering
+          serviceName: ocelot
           servicePort: 80
       - path: /webmvc
         backend:
@@ -41,11 +41,11 @@ spec:
           servicePort: 80
       - path: /payment-api
         backend:
-          serviceName: payment
+          serviceName: ocelot
           servicePort: 80
       - path: /locations-api
         backend:
-          serviceName: locations
+          serviceName: ocelot
           servicePort: 80
       - path: /
         backend:

k8s/ocelot/configuration.json

@@ -0,0 +1,58 @@
+{
+    "ReRoutes": [
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "ordering",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/ordering-api/{everything}",
+        "UpstreamHttpMethod": []
+      },
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "basket",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/basket-api/{everything}",
+        "UpstreamHttpMethod": []
+      },
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "catalog",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/catalog-api/{everything}",
+        "UpstreamHttpMethod": []
+      },
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "marketing",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/marketing-api/{everything}",
+        "UpstreamHttpMethod": []
+      },
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "payment",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/payment-api/{everything}",
+        "UpstreamHttpMethod": []
+      },
+      {
+        "DownstreamPathTemplate": "/{everything}",
+        "DownstreamScheme": "http",
+        "DownstreamHost": "locations",
+        "DownstreamPort": 80,
+        "UpstreamPathTemplate": "/location-api/{everything}",
+        "UpstreamHttpMethod": []
+      }
+  
+    ],
+      "GlobalConfiguration": {
+        "RequestIdKey": "OcRequestId",
+        "AdministrationPath": "/administration"
+      }
+    }
+    

k8s/ocelot/deployment.yaml

@@ -0,0 +1,31 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: ocelot
+spec:
+  paused: true
+  template:
+    metadata:
+      labels:
+        app: eshop
+        component: ocelot
+    spec:
+      containers:
+      - name: ocelot
+        image: eshop/ocelotapigw
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80   
+        volumeMounts:
+        - name: config
+          mountPath: /app/configuration            
+      volumes:
+      - name: config
+        configMap:
+          name: ocelot
+          items:
+          - key: configuration.json
+            path: configuration.json
+      imagePullSecrets:
+      - name: registry-key
+

k8s/ocelot/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: eshop
+    component: ocelot
+  name: ocelot
+spec:
+  ports:
+  - port: 80
+  selector:
+    app: eshop
+    component: ocelot

src/Apigw/OcelotApiGw/Dockerfile

@@ -4,9 +4,8 @@ EXPOSE 80
 
 FROM microsoft/aspnetcore-build:2.0 AS build
 WORKDIR /src
-COPY *.sln ./
 COPY src/Apigw/OcelotApiGw/OcelotApiGw.csproj src/Apigw/OcelotApiGw/
-RUN dotnet restore
+RUN dotnet restore src/Apigw/OcelotApiGw/
 COPY . .
 WORKDIR /src/src/Apigw/OcelotApiGw
 RUN dotnet build -c Release -o /app

src/Apigw/OcelotApiGw/OcelotApiGw.csproj

@@ -10,6 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.3" />
+    <PackageReference Include="Ocelot" Version="2.0.10" />
   </ItemGroup>
 
 </Project>

src/Apigw/OcelotApiGw/Program.cs

@@ -19,6 +19,7 @@ namespace OcelotApiGw
 
         public static IWebHost BuildWebHost(string[] args) =>
             WebHost.CreateDefaultBuilder(args)
+                .ConfigureAppConfiguration(ic => ic.AddJsonFile(Path.Combine("configuration", "configuration.json")))
                 .UseStartup<Startup>()
                 .Build();
     }

src/Apigw/OcelotApiGw/Startup.cs

@@ -2,22 +2,33 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using CacheManager.Core;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Ocelot.DependencyInjection;
+using Ocelot.Middleware;
 
 namespace OcelotApiGw
 {
     public class Startup
     {
-        // This method gets called by the runtime. Use this method to add services to the container.
+
-        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
+        private readonly IConfiguration _cfg;
-        public void ConfigureServices(IServiceCollection services)
+
+        public Startup(IConfiguration configuration)
         {
+            _cfg = configuration;
+        }
+
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddOcelot(_cfg);
         }
 
-        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
         {
             if (env.IsDevelopment())
@@ -25,10 +36,7 @@ namespace OcelotApiGw
                 app.UseDeveloperExceptionPage();
             }
 
-            app.Run(async (context) =>
+            app.UseOcelot();
-            {
-                await context.Response.WriteAsync("Hello World!");
-            });
         }
     }
 }

src/Apigw/OcelotApiGw/configuration/configuration.json

@@ -0,0 +1,58 @@
+{
+  "ReRoutes": [
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "ordering.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/orders-api/{everything}",
+      "UpstreamHttpMethod": []
+    },
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "basket.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/basket-api/{everything}",
+      "UpstreamHttpMethod": []
+    },
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "catalog.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/catalog-api/{everything}",
+      "UpstreamHttpMethod": []
+    },
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "marketing.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/marketing-api/{everything}",
+      "UpstreamHttpMethod": []
+    },
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "payment.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/payment-api/{everything}",
+      "UpstreamHttpMethod": []
+    },
+    {
+      "DownstreamPathTemplate": "/{everything}",
+      "DownstreamScheme": "http",
+      "DownstreamHost": "locations.api",
+      "DownstreamPort": 80,
+      "UpstreamPathTemplate": "/location-api/{everything}",
+      "UpstreamHttpMethod": []
+    }
+
+  ],
+    "GlobalConfiguration": {
+      "RequestIdKey": "OcRequestId",
+      "AdministrationPath": "/administration"
+    }
+  }
+  

xglobal.json

@@ -0,0 +1,5 @@
+{
+    "sdk": {
+        "version":"2.1.2"
+    }
+}