Python rest api test application

Working most of the times (always) in Platform i'm usually play with the infrastructure, however sometimes to create prototype i need backends that are done for the specific purpose.

GOALS:

• The application must be a REST api
• Run in kubernetes
  
  
  
  

Docker and kubernetes

The application is working with GET, POST, PUT, DELETE
enouth to cover most of the usages based on rest api.

Inside the docker path you can run easly as local docker

docker build --tag pytbak:0.1 .
docker run -t -p 5000:5000 pytbak:0.1
and access on it with locahost:5000/api/

instead if you want to run it in kubernetes ,
starting from the main folder you can apply the kubernetes folder on your environment
kubectl apply -f kubernetes/

$ kubectl  get pods -n pytbak
NAME                             READY   STATUS    RESTARTS   AGE
pytbak-stable-5dfb4fbfd4-n64kx   1/1     Running   0          40m

Remember to change the host in the ingress file configuration

$ cat 03-ing-pytbak.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: pytbak-ingress
  namespace: pytbak
  annotations:
    ingress.kubernetes.io/proxy-connect-timeout: "10"
    ingress.kubernetes.io/proxy-read-timeout: "30"
    ingress.kubernetes.io/proxy-send-timeout: "30"
spec:
  rules:
  - host: pytbak.ing.h4x0r3d.lan
    http:
      paths:
      - path: /
        backend:
          serviceName: pytbak-svc
          servicePort: 5000

host: pytbak.ing.h4x0r3d.lan this is my ingress dns resolution

TIPS: for ingress endpoints you can manage multiple namespace creating an A record in your DNS (as a subdomain) with a wildcard dedicated only for ingress matching the namespace and the host created

in my case i have the home dns as h4x0r3d.lan
and *.ing.h4x0r3d.lan as a record A of my kubernetes ingress
in this way if i create a namespace pippo the dns that i have to call to reach it out will be pippo.ing.4x0r3d.lan with no change on DNS.

Usage

The application answer on /api/ with the main html page with methods

Following the methods example

$ curl -i http://pytbak.ing.h4x0r3d.lan/api/get/context
HTTP/1.1 200 OK
Server: openresty/1.15.8.1
Date: Wed, 28 Oct 2020 20:02:02 GMT
Content-Type: application/json
Content-Length: 696
Connection: keep-alive
Vary: Accept-Encoding

{
  "context": [
    {
      "description": "RHEL 6 based",
      "done": false,
      "title": "Cento 6",
      "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/1"
    },
    {
      "description": "RHEL 7 based",
      "done": false,
      "title": "Centos 7",
      "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/2"
    },
    {
      "description": "RHEL 8 based",
      "done": false,
      "title": "Centos 8",
      "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/3"
    },
    {
      "description": "Fedora + RHEL based",
      "done": false,
      "title": "Centos stream",
      "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/4"
    }
  ]

$ curl -i -H "Content-Type: application/json" -X POST -d '{"title":"Ubuntu 20.04 LTS", "description":"focal"}' http://pytbak.ing.h4x0r3d.lan/api/post/context
HTTP/1.1 201 CREATED
Server: openresty/1.15.8.1
Date: Wed, 28 Oct 2020 19:49:31 GMT
Content-Type: application/json
Content-Length: 165
Connection: keep-alive

{
  "task": {
    "description": "focal",
    "done": false,
    "title": "Ubuntu 20.04 LTS",
    "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/5"
  }
}

$ curl -i -H "Content-Type: application/json" -X PUT -d '{"description":"Focal Fossa"}' http://pytbak.ing.h4x0r3d.lan/api/put/context/5
HTTP/1.1 200 OK
Server: openresty/1.15.8.1
Date: Wed, 28 Oct 2020 20:02:43 GMT
Content-Type: application/json
Content-Length: 171
Connection: keep-alive

{
  "task": {
    "description": "Focal Fossa",
    "done": false,
    "title": "Ubuntu 20.04 LTS",
    "uri": "http://pytbak.ing.h4x0r3d.lan/api/get/context/5"
  }
}

$ curl -i -H "Content-Type: application/json" -X DELETE http://pytbak.ing.h4x0r3d.lan/api/delete/context/5
HTTP/1.1 200 OK
Server: openresty/1.15.8.1
Date: Wed, 28 Oct 2020 20:04:47 GMT
Content-Type: application/json
Content-Length: 21
Connection: keep-alive

{
  "result": true
}
$ curl -i http://pytbak.ing.h4x0r3d.lan/api/get/context/5
HTTP/1.1 404 NOT FOUND
Server: openresty/1.15.8.1
Date: Wed, 28 Oct 2020 20:04:54 GMT
Content-Type: application/json
Content-Length: 27
Connection: keep-alive

{
  "error": "Not found"
}