add event_extension var

[fivetran-reneeli]

PR Overview

This PR will address the following Issue/Feature:
internal ticket

In tandem with the downstream PR #44

This PR will result in the following new package version: v0.9.0

Non breaking as the default config for event_extension is still true so existing users won't see any changes.

Please provide the finalized CHANGELOG entry which details the relevant changes included in this PR:

Bug Fixes

• Introduces variable iterable__using_event_extension to disable the stg_iterable__event_extension model. This allows the downstream models to run even if the source event_extension table does not exist. For more information on how to configure refer to the README.

PR Checklist

Basic Validation

Please acknowledge that you have successfully performed the following commands locally:

• dbt run –full-refresh && dbt test
• dbt run (if incremental models are present) && dbt test

Before marking this PR as "ready for review" the following have been applied:

• The appropriate issue has been linked, tagged, and properly assigned
• All necessary documentation and version upgrades have been applied
• docs were regenerated (unless this PR does not include any code or yml updates)
• BuildKite integration tests are passing
• Detailed validation steps have been provided below

Detailed Validation

Please share any and all of your validation steps:

Variables tried:

    iterable_user_history_pass_through_columns:
      - name: phone_number_line_type
        alias: phone_digits
      - name: additional_properties
    iterable_event_extension_pass_through_columns:
      - name: browser_token
    iterable__using_event_extension: true
#    iterable__using_event_extension: false
    

If you had to summarize this PR in an emoji, which would it be?

💃

[fivetran-reneeli]

will regen docs upon approval

[fivetran-avinash]

@fivetran-reneeli Looking good! A few minor comments to address before approval.

Also one major one: You'll need to regenerate docs.

[fivetran-avinash]

Thanks @fivetran-reneeli ! Let me know when you've regenerated the docs and I can go ahead and approve this.

[fivetran-avinash]

@fivetran-reneeli Approved!

[fivetran-joemarkiewicz]

@fivetran-reneeli thanks for working on this PR. This mostly looks good there is just one final update that needs to be applied:

• You need to add the config: enabled: block to the src.yml for the event_extension source table. This way, if the event_extension source is not present and the model is disabled then the source freshness will not be run for that source. If we do not include this logic the source freshness test will fail.
  

[fivetran-joemarkiewicz]

@fivetran-reneeli thanks for making these changes. This looks good to me!