MirrorService

Spring Framework based Service which is mirroring requests with the option to delay requests and alter http response codes

Dependencies

At least: Java 11 and Maven 3.5

Build Service Logging

mvn package -DskipTests=true

Run with devtools

mvn spring-boot:run

Run Service

Environment variables

Windows

java -jar target\mirrorservice-0.3.1-SNAPSHOT.jar

Linux (service enabled)

./target/mirrorservice-0.3.1-SNAPSHOT.jar start

Docker build

docker build -t mirrorservice:latest . --build-arg JAR_FILE=./target/mirrorservice-0.3.1-SNAPSHOT.jar

Docker publish to github registry

• docker tag mirrorservice:latest docker.pkg.github.com/wlanboy/mirrorservice/mirrorservice:latest
• docker push docker.pkg.github.com/wlanboy/mirrorservice/mirrorservice:latest

##Docker Hub

• https://hub.docker.com/r/wlanboy/mirrorservice

Docker Registry repro

• https://github.com/wlanboy/MirrorService/packages/278492

Docker run

• docker run --name mirrorservice -m 256M -d -p 8003:8003 -v /tmp:/tmp mirrorservice:latest

Kubernets deployment

Prepare

cd ~
git clone https://github.com/wlanboy/MirrorService.git

check you local kubectl

kubectl cluster-info
kubectl get pods --all-namespaces

deploy service on new namespace

cd ~/MirrorService
kubectl create namespace mirror
kubectl apply -f mirrorservice-deployment.yaml
kubectl apply -f mirrorservice-service.yaml
kubectl get pods -n mirror -o wide

check deployment and service

kubectl describe deployments -n mirror mirrorservice 
kubectl describe services -n mirror mirrorservice-service

expose service and get node port

kubectl expose deployment -n mirror mirrorservice --type=NodePort --name=mirrorservice-serviceexternal --port 8003
kubectl describe services -n mirror mirrorservice-serviceexternal 

Result:

Name:                     mirrorservice-serviceexternal
Namespace:                mirror
Labels:                   app=mirrorservice
Annotations:              <none>
Selector:                 app=mirrorservice
Type:                     NodePort
IP Family Policy:         SingleStack
IP Families:              IPv4
IP:                       10.108.40.139
IPs:                      10.108.40.139
Port:                     <unset>  8003/TCP
TargetPort:               8002/TCP
NodePort:                 <unset>  30412/TCP  <--- THIS IS THE PORT WE NEED
Endpoints:                10.10.0.7:8003
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

call microservice

• curl http://192.168.56.100:30412/actuator/health
• Result

{"status":"UP","groups":["liveness","readiness"]}

Get your requests back

http://localhost:8003/mirror?statuscode=201&wait=10

returns http status code 201 and waits for 10 ms / mirrors body and headers