[Good First Issues]: implement function "today" - 4 points

[Michaelg22]

Motivation

Vanus Functions are a series of pre-built functions worked within Vanus transformer. By choosing a function, users can specify the way that events will be changed.

It will be a good start if you decide to contribute to Vanus codes.

Details

Function name: today

Args

• targetJsonPath - The name of an existing column.
• timeZone - Optional. The name of the country and city. If no time zone is specified, then the default is Universal Coordinated Time (UTC).

Description

The function is used to get the current date(format: YYYY-MM-DD) in a specific TimeZone. And assign it to the target JSON path.
The Time Zone will be UTC if users don't specify it.

Example

{
    "specversion" : "1.0",
    "type" : "com.example.someevent",
    "source" : "/mycontext",
    "subject": null,
    "id" : "C234-1234-1234",
    "time" : "2018-04-05T17:31:00Z",
    "comexampleextension1" : "value",
    "comexampleothervalue" : 5,
    "datacontenttype" : "application/json",
    "data" : {
        appinfoA : "Hello world",
       

    }
}

After the function.

"pipeline":[
    {"command":["today","$.data.time", "Europe/Madrid"]}
]

The transformed event should look like this:

{
    "specversion" : "1.0",
    "type" : "com.example.someevent",
    "source" : "/mycontext",
    "subject": null,
    "id" : "C234-1234-1234",
    "time" : "2018-04-05T17:31:00Z",
    "comexampleextension1" : "value",
    "comexampleothervalue" : 5,
    "datacontenttype" : "application/json",
    "data" : {
        appinfoA : "Hello world",
        time : "2023-01-12"

How to implement

1. Fork the vanus repository.
2. Create a branch function-today
3. Create today.go under internal/primitive/transform/action/datatime, and then implement the function.
4. Create today.go under internal/primitive/transform/action/datatime for unit test.
5. Register your function in internal/primitive/transform/runtime/init.go.
6. Submit your PR

Contribution points

Each issue counts specific points based on its difficulty. Contributors earn the corresponding points if they solve that issue. Contribution points are used to describe the contributions contributors have made. They can also be used to get rewards when there are community events.

This issue counts 4 points.

How to claim to solve the issue

If you want to implement this function, please leave a comment in this issue like:

I'd like to implement this function, please assign this issue to me.

Vanus community will assign the issue to you on time.

[thiyagarajan17]

Could you assign the issue to me.. free to help out

[Michaelg22]

Hi @thiyagarajan17 Join our slack community if you haven't already for better communication

[Michaelg22]

How is your progress on developing the function looking forward to your PR

[Michaelg22]

Please make sure to make the function in internal/primitive/transform/action/datatime

[Michaelg22]

Hello @thiyagarajan17 , I wanted to check in with you regarding the issue you expressed interest in writing a function for. I haven't heard from you in a while, so I was wondering if you're still interested in working on it. Please let me know if you are, otherwise, I will need to assign the task to someone else who is available and willing to work on it.

[Michaelg22]

This issue will be closed and was recreated #462