Add Iternation index option

[bobbyiliev]

What type of PR is this? (check all applicable)

• ♻️ Refactor
• ✨ Feature
• 🐛 Bug Fix
• 👷 Optimization
• 📝 Documentation Update
• 🚩 Other

Description

To simulate auto incrementing primary keys, you can use the iteration.index variable in the schema.

This is particularly useful when you want to generate a small set of records with sequence of IDs, for example 1000 records with IDs from 1 to 1000:

[
    {
        "_meta": {
            "topic": "mz_datagen_users"
        },
        "id": "iteration.index",
        "name": "internet.userName",
    }
]

Example:

datagen -s tests/iterationIndex.json -dr true -f json -n 1000

This does not work particularly well with the relational data implementation, but it is mainly intended to be used with single schemas, eg. the Storage utilization test task.

Related Tickets & Documents

N/A

Added to documentation?

• 📜 readme
• 🙅 no documentation needed

[optional] What gif best describes this PR or how it makes you feel?

[chuck-alt-delete]

I’ll need to check what you said about it not playing nicely with relational schemas, but that might be something we can fix later. I’ll approve for now. You or I might come back to the docs or file an issue to clarify what exactly goes wrong.