API Workshop

A workshop on API Development, API Security, API Testing and API Description Languages

• API Workshop Gitbook
• Workshop Details
• API Summary and Description
• Restful API Introduction
  • Roy Fieldings Dissertation on REST
  • Rest Architecture Constraints
  • Richardson Maturity Model
• HTTP Concepts
  • HTTP Verbs
  • HTTP Status Codes
  • HTTP Headers
  • HTTP Request and Response
  • URI Design
  • Query String
• API Design
• API Testing
  • Types of API Testing
  • API Testing Tools
• API Security
  • Authentication
    • OpenID Connect
  • Authorization
    • OAuth
  • Federation
  • Delegation
• API Description Languages
  • OpenAPI
  • API Blueprint
  • RAML
• GraphQL

API Workshop Gitbook

Here is the gitbook for the API Workshop

Workshop Details

Install Golang and make sure to set $GOPATH to $HOME/go

Try to put your GO Files in the following location:

$HOME/go/src/github.com/{github_username

Go is very opinionated about this and linters and tools are looking for a specific path.

Install Docker and Docker-compose.

Here is my version information:

Docker Version:

docker version
Client: Docker Engine - Community
 Version:           18.09.1
 API version:       1.39
 Go version:        go1.10.6
 Git commit:        4c52b90
 Built:             Wed Jan  9 19:33:12 2019
 OS/Arch:           darwin/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.1
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.6
  Git commit:       4c52b90
  Built:            Wed Jan  9 19:41:49 2019
  OS/Arch:          linux/amd64
  Experimental:     true

Docker Compose Version:

> docker-compose version
docker-compose version 1.23.2, build 1110ad01
docker-py version: 3.6.0
CPython version: 3.6.6
OpenSSL version: OpenSSL 1.1.0h  27 Mar 2018

Install Dep binary

Please run the following commands to install Dep which is a dependency manager in Golang:

Dep Install Script with official shell script

• curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh

Homebrew Installation for Mac OS x

Install or upgrade to the latest released version with Homebrew:

1. brew install dep

2. brew upgrade dep

Install GoMetalinter with Curl

Binary Releases To install the latest stable release:

curl -L https://git.io/vp6lP | sh

Alternatively you can install a specific version from the releases list.

Install GoMetalinter with Homebrew

1. brew tap alecthomas/homebrew-tap

2. brew install gometalinter

Add common.env file to the repository

Please make sure to rename the common.env.sample to common.env because the API needs it to run.

Cloning instructions to proper GOPATH locations

I would highly suggest that you place the cloned repository into the following directory path:

$HOME/go/src/github.com/{github_username}

Golang is very opionated about the package location and structure.

Running API

Run make build to build the api and in particular the docker containers.

Run make dev in order to get API running locally

This gets both Redis and MongoDB running in docker containers as well as a Golang Container running.

Using Rest Client to work with API

I would suggest to use a Rest Client such as Postman to work with the running api:

Example making GET Request to the Heroes LIST Endpoint:

curl -X GET \
  http://localhost:8080/api/v1/heroes \
  -H 'Accept: application/json'

Example making a POST Request to the Heroes Create Endpoint:

curl -X POST \
  http://localhost:8080/api/v1/heroes \
  -H 'Content-Type: application/json' \
  -d '{
    "name": "Batman",
    "superpowers": [
        "Super Rich",
        "Tech Gadgets",
        "Batmobile",
        "Martial Artists",
        "Super Style",
        "Alfred"
    ],
    "gender": "male"
  }'

Example making a GET Request retrieving a specific Hero:

curl -X GET \
  http://localhost:8080/api/v1/heroes/5c4ca572912242004355b5d4 \
  -H 'Accept: application/json'

Example making a DELETE Request to remove a specific hero:

curl -X DELETE \
  http://localhost:8080/api/v1/heroes/5c4ca572912242004355b5d4 \
  -H 'Accept: application/json'

Example making an UPDATE Request to update a specific hero:

curl -X PUT \
  http://localhost:8080/api/v1/heroes/5c44982798204b00946bb860 \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
    "name": "Aquaman",
    "superpowers": [
        "Expert with magical Trident",
        "Enhanced vision",
        "Enhanced smell",
        "Enhanced stamina",
        "Expert combatant",
        "Expert tactician",
        "Super Strength",
        "Super Speed",
        "Marine Telepathy",
        "Super Reflexes"
    ],
    "gender": "male"
}'

Running API Tests

Run make test in order to run the tests in a Go container

TODO Section for Workshop

• [] Wrap up added sections in API Design Section
• [] Wrap up GraphQL Section
• [] Add section for API Introspection
• [] Add section for tool like API Dredd to test API Documentation
• [] Wrap new section to disambiguate differences between OAuth and OAuth2