A simple HTTP service that stores temperature update data

Notes

• Uses fiber to design the HTTP API
  • Quite pleasant to use
  • Standalone library, does not integrate with net/http
• Data is stored in memory as a map, so a mutex is required to protect access
• Uses viper and cobra to have a CLI and get the http server configuration from flags, environment variables or an optional configuration file
  • In a bigger code base the cobra command would be moved to a cmd/ folder / package
• Integration tests

Usage

Get all data:

$ http :3000/data
HTTP/1.1 200 OK
Content-Length: 74
Content-Type: application/json
Date: Tue, 01 Feb 2022 08:57:16 GMT

[
    {
        "sensorId": "123-abc",
        "value": 19.2
    },
    {
        "sensorId": "456-def",
        "value": -2.33
    }
]

Update some data:

$ http POST :3000/record sensorId=1 value:=19.1
HTTP/1.1 200 OK
Content-Length: 29
Content-Type: application/json
Date: Tue, 01 Feb 2022 08:57:55 GMT

{
    "sensorId": "1",
    "value": 19.1
}

Get a specific sensor data:

$ http :3000/data/1
HTTP/1.1 200 OK
Content-Length: 29
Content-Type: application/json
Date: Tue, 01 Feb 2022 08:58:41 GMT

{
    "sensorId": "1",
    "value": 19.1
}