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Nik Mohamad Aizuddin b. Nik Azmi
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feat(example): Add kong-podman example
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‎kong-podman/Dockerfile‎

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FROM docker.io/node:14.16.1
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MAINTAINER extra2000 <https://github.com/extra2000>
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COPY ./project /srv/project
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WORKDIR /srv/project
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RUN npm install
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ENTRYPOINT npm run webservice

‎kong-podman/README.md‎

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# Sample apps: Kong Podman
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## Deploy Postgres
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```
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$ podman play kube --network=sampleapps postgres-pod.yaml
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```
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Bootstrap Kong database for the first time:
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```
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$ podman run --rm --pod postgres-pod --volume="./kong.conf:/etc/kong/kong.conf:ro,z" -e "KONG_PG_HOST=localhost" docker.io/library/kong:2.3.0 kong migrations bootstrap
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```
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Test to make sure postgres works (use password `abcde12345`):
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```
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$ podman run -it --rm --network=sampleapps docker.io/postgres:13.1-alpine psql --host=postgres-pod.sampleapps --username=kong --dbname=kongdb
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```
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## Deploy Kong
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Start Kong:
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```
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$ podman play kube --network=sampleapps kong-pod.yaml
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```
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Test Kong and make sure no error, for example:
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```
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$ podman run -it --rm --network=sampleapps docker.io/curlimages/curl curl http://kong-pod.sampleapps:8001
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```
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## Running NodeJS webservice
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```
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$ podman build -t extra2000/webservice:latest .
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$ podman play kube --network=sampleapps webservice-pod.yaml
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```
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Test make sure the NodeJS webservice is working and accessible by `kong`:
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```
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$ podman run -it --rm --pod=webservice-pod docker.io/curlimages/curl curl http://localhost:8000/api/v1/customers
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl http://webservice-pod.sampleapps:8000/api/v1/customers
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```
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Register NodeJS webservice into Kong and setup routing:
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```
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i -X POST --url http://localhost:8001/services/ --data 'name=webservice' --data 'url=http://webservice-pod.sampleapps:8000'
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i -X POST --url http://localhost:8001/services/webservice/routes --data 'name=webservice-route' --data 'paths[]=/myweb'
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```
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To test:
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```
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$ podman run -it --rm --network=sampleapps docker.io/curlimages/curl curl -i -X GET http://kong-pod.sampleapps:8000/myweb/api/v1/customers
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$ curl -i -X GET http://localhost:8000/myweb/api/v1/customers
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```
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To list services and routes:
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```
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i http://localhost:8001/services
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i http://localhost:8001/routes
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```
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To delete a service, delete their routes first:
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```
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i -X DELETE --url http://localhost:8001/routes/webservice-route
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$ podman run -it --rm --pod=kong-pod docker.io/curlimages/curl curl -i -X DELETE --url http://localhost:8001/services/webservice
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```
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## Cleaning up
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To remove all pods including containers:
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```
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$ podman pod rm --force webservice-pod kong-pod postgres-pod
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```

‎kong-podman/initdb.sql‎

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CREATE DATABASE kongdb;
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CREATE USER kong WITH PASSWORD 'abcde12345';

‎kong-podman/kong-pod.yaml‎

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apiVersion: v1
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kind: Pod
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metadata:
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name: kong-pod
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spec:
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restartPolicy: Never
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containers:
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- name: kong
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image: docker.io/library/kong:2.3.0
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ports:
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- containerPort: 8000
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hostPort: 8000
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protocol: tcp
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- containerPort: 8443
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protocol: tcp
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- containerPort: 8001
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protocol: tcp
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- containerPort: 8444
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protocol: tcp
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volumeMounts:
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- mountPath: /etc/kong/kong.conf
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name: kongconf
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readOnly: true
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volumes:
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- name: kongconf
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hostPath:
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path: ./kong.conf

‎kong-podman/kong.conf‎

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‎kong-podman/postgres-pod.yaml‎

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apiVersion: v1
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kind: Pod
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metadata:
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name: postgres-pod
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spec:
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restartPolicy: Never
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containers:
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- name: postgres
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image: docker.io/postgres:13.1-alpine
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ports:
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- containerPort: 5432
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protocol: tcp
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env:
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- name: POSTGRES_PASSWORD
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value: abcde12345
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volumeMounts:
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- mountPath: /docker-entrypoint-initdb.d/initdb.sql
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name: initdb
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readOnly: true
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volumes:
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- name: initdb
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hostPath:
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path: ./initdb.sql

‎kong-podman/project/.gitignore‎

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (https://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# TypeScript v1 declaration files
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typings/
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# TypeScript cache
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*.tsbuildinfo
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Microbundle cache
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.rpt2_cache/
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.rts2_cache_cjs/
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.rts2_cache_es/
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.rts2_cache_umd/
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variables file
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.env
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.env.test
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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# Next.js build output
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.next
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and *not* Next.js
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# https://nextjs.org/blog/next-9-1#public-directory-support
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# public
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# vuepress build output
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.vuepress/dist
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# Serverless directories
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.serverless/
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# FuseBox cache
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.fusebox/
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# DynamoDB Local files
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.dynamodb/
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# TernJS port file
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.tern-port

‎kong-podman/project/package.json‎

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{
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"name": "webservice",
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"version": "1.0.0",
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"description": "Dummy webservice",
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"author": "extra2000",
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"license": "MIT",
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"main": "src/webservice.ts",
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"scripts": {
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"tsc": "tsc",
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"webservice": "ts-node src/webservice.ts"
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},
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"dependencies": {
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"express": "^4.16.1",
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"body-parser": "1.18.3"
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},
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"devDependencies": {
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"typescript": "^4.0.2",
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"ts-node": "^9.0.0",
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"@types/node": "^14.11.2"
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}
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}

‎kong-podman/project/src/webservice.ts‎

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const express = require('express');
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const bodyParser = require('body-parser');
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const app = express();
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const customers = [
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{
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id: 5,
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first_name: 'Gordon',
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last_name: 'Freeman'
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},
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{
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id: 6,
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first_name: 'Nick',
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last_name: 'Mendoza'
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}
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];
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const clients = [
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{
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id: 1,
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first_name: 'Heather',
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last_name: 'Mason'
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},
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{
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id: 2,
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first_name: 'James',
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last_name: 'Sunderland'
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}
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];
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app.use(bodyParser.json());
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app.get('/api/v1/customers', (req, res) => {
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res.json(customers);
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});
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app.get('/api/v1/customers/:id', (req, res) => {
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res.json(customers[req.params.id]);
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});
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app.get('/api/v1/clients', (req, res) => {
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res.json(clients);
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});
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app.get('/api/v1/clients/:id', (req, res) => {
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res.json(clients[req.params.id]);
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});
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app.listen(8000, () => {
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console.log(`Server started!`);
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});

‎kong-podman/webservice-pod.yaml‎

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apiVersion: v1
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kind: Pod
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metadata:
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name: webservice-pod
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spec:
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restartPolicy: Never
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containers:
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- name: webservice
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image: localhost/extra2000/webservice
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ports:
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- containerPort: 8000
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protocol: tcp

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