[Good First Issues]: implement function "replace_between_delimiters" - 7 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

This function is used to replace the characters between two delimiters with user-specified text of an existing json element.

Description

Function name: replace_between_delimiters

Function description:

Replaces the characters between two delimiters with user-specified text.
Enter any character, including a space.

must have - startDelimiter - endDelimiter.

Example

For example, if delimiters are && and &&

{
    "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" : {
        "info : "this is &&jay ding&&",
        "appinfoB" : 123,
        "appinfoC" : true
    }
}

After the function "replace_between_delimiters":

"pipeline":[
    {"command":["replace_between_delimiters","$.data.appinfoA", "&&", "&&", "michael"]}
]

The transformed event should look like:

{
    "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" : {
        "info : "this is &&michael&&",
        "appinfoB" : 123,
        "appinfoC" : true
    }
}

How to implement

1. Fork the vanus repository.
2. Create a branch function-replace_between_delimiters
3. Create replace_between_delimiters.go under internal/primitive/transform/action/strings, and then implement the function.
4. Create replace_between_delimiters_test.go under internal/primitive/transform/action/strings 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 5 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.

[c0d33ngr]

Please assign this to me, I'd love to work on this

[Michaelg22]

@c0d33ngr how is it going?

[c0d33ngr]

It's going well, I'm using strings.Split(), I'll make PR soon