add: k8s support

.dockerignore

@@ -14,6 +14,6 @@
 # Dependency directories (remove the comment below to include it)
 # vendor/
 
-*.pb.go
 app.env
-examples/
+examples/
+manifest/*

Dockerfile

@@ -3,7 +3,6 @@ FROM golang:1.14.6-alpine3.12 as builder
 
 COPY . /app/
 WORKDIR /app
-RUN sh ./gen_proto.sh
 RUN go mod download
 
 RUN CGO_ENABLED=0 GOOS=linux go build -o ./ -a -installsuffix cgo /app/...

README.md

@@ -72,12 +72,20 @@ Templated are parsed using `html/template` package.
 
 ### Docker
 ```
-docker run -d --name email-microservice --env-file app.env -p 5555:5555 crossphoton/email-microservice
+docker run -d --name email-microservice --env-file app.env -p 5555:5555 crossphoton/email-microservice:v1.0.0
 ```
 
 ### Kubernetes
 
-> TODO
+Use the [deployment.yml](manifest/deployment.yml) file for the service deployment.
+
+This requires a `smtp-secret` secret to be created which contains the following:
+- `SMTP_HOST` - SMTP host
+- `SMTP_PORT` - SMTP port
+- `SMTP_EMAIL` - SMTP email
+- `SMTP_PASSWORD` - SMTP password
+
+A template of this is also provided (See [secrets.yml](manifest/secrets.yml))
 
 ### Locally
 1. Clone the repository
@@ -101,6 +109,7 @@ Generate the client code using the proto file [email.proto](./email.proto)
 ## TODO
 - Tracing
 - Graceful shutdown
+- Switch to Uber Go Style. [See the guide here](https://github.com/uber-go/guide/blob/master/style.md).
 - 
 
 ## License

manifest/deployment.yml

@@ -0,0 +1,60 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: email-service
+spec:
+  selector:
+    matchLabels:
+      app: email-service
+  template:
+    metadata:
+      labels:
+        app: email-service
+    spec:
+      containers:
+      - name: server
+        image: crossphoton/email-microservice:v1.0.0
+        resources:
+          limits:
+            memory: "128Mi"
+            cpu: "250m"
+        env:
+          - name: PORT
+            value: "5555"
+          - name: PROMETHEUS_PORT
+            value: "9090"
+          - name: ENVIRONMENT
+            value: "production"
+          # - name: DISABLE_EMAIL
+          #   value: "true"
+
+        envFrom:
+          - secretRef:
+              name: smtp-secret
+        readinessProbe:
+          periodSeconds: 5
+          exec:
+            command: ["/bin/grpc_health_probe", "-addr=:5555"]
+        livenessProbe:
+          periodSeconds: 5
+          exec:
+            command: ["/bin/grpc_health_probe", "-addr=:5555"]
+        ports:
+        - containerPort: 5555
+        - containerPort: 9090
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: email-service
+spec:
+  type: ClusterIP
+  selector:
+    app: email-service
+  ports:
+  - name: grpc
+    port: 5555
+    targetPort: 5555
+  - name: prometheus
+    port: 9090
+    targetPort: 9090

manifest/secrets.yml

@@ -0,0 +1,13 @@
+# Here you should provide the smtp environment variables
+
+apiVersion: v1
+kind: Secret
+metadata:
+  name: smtp-secret
+  namespace: testing
+type: Opaque
+data:
+  SMTP_HOST: <SMTP_HOST>
+  SMTP_PORT: <SMTP_PORT>
+  SMTP_EMAIL: <SMTP_EMAIL>
+  SMTP_PASSWORD: <SMTP_PASSWORD>