go-microservice

go-microservice

An educational project for creating a microservice in go

Running the example

For running the example with the default config (in memory database) you should do :

$ make run

For running the example with PostgreSQL database you should do :

$ make run-postgresql

For running the example with PostgreSQL we require to have it running with the following details :

Server   : localhost
Port     : 5432
Database : pets
User     : petuser
Password : petpwd

To change these details you need to modify the file build/config/postgresql.json

Running the tests

For running the tests you should do :

$ make test

Running the integration tests

For running the integration tests you should do :

$ make integration

These test requires to have Docker running.

Example requests using HTTPie

First install HTTPie

Post a new Pet

$ http POST :8080/pets name=Fluffy race=Dog mod=Happy

HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/json; charset=utf-8
Date: Sun, 23 Feb 2020 15:31:31 GMT
Location: /pet/1

Query a Pet

$ http :8080/pets/1

HTTP/1.1 200 OK
Content-Length: 52
Content-Type: application/json; charset=utf-8
Date: Sun, 23 Feb 2020 15:32:57 GMT

{
    "id": 1,
    "mod": "Happy",
    "name": "Fluffy",
    "race": "Dog"
}

Delete a Pet

$ http DELETE :8080/pets/1

HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/json; charset=utf-8
Date: Sun, 23 Feb 2020 15:33:42 GMT

Update a Pet

$ http PUT :8080/pets/1 name=Fluffy race=Dog mod=Sad

HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/json; charset=utf-8
Date: Sun, 23 Feb 2020 15:31:31 GMT

Get all Pets

$ http GET :8080/pets

HTTP/1.1 200 OK
Content-Length: 104
Content-Type: application/json; charset=utf-8
Date: Mon, 09 Mar 2020 08:07:36 GMT

[
    {
        "id": 1,
        "mod": "Happy",
        "name": "Fluffy",
        "race": "Dog"
    },
    {
        "id": 2,
        "mod": "Brave",
        "name": "Lion",
        "race": "Cat"
    }
]

Health checks

$ http GET :8080/health/readiness

HTTP/1.1 200 OK
Content-Length: 0
Date: Sun, 19 Apr 2020 09:16:38 GMT

$ http :8080/health/liveness

HTTP/1.1 200 OK
Content-Length: 0
Date: Sun, 19 Apr 2020 09:16:45 GMT

Kubernetes deployment

To deploy this service in a local kubernetes:

make deploy

This requires to have a registry running in the same cluster.

When building the docker image you can use the environment variable LOCAL_REGISTRY to point to the docker registry.