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Fix landings stream to be incremental #58

merged 3 commits into from
May 17, 2022


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@loeakaodas loeakaodas commented Feb 8, 2022

Description of change

Manual QA steps

  • ran tap locally
  • ran against singer-check-tap and target-stitch --dry-run
  • ran tap-tester locally
  • tests passing in circle


  • minimal, the stream will now be incremental

Rollback steps

  • revert this branch'All landings query')

page_count = 2
sort = 'landed_at,asc'
sort = 'submitted_at,asc' # sorting isn't supported with `after` and defaults to submitted_at
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Do we know that submitted_at and landed_at are always the same? If not, then shouldn't the replication key be submitted_at?

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@loeakaodas loeakaodas Feb 16, 2022

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They are definitely not the same, at least in the test data submitted_at is always greater than landed_at. I mimicked the setup of the answers stream for making the landings stream incremental and used landed_at as the replication key. This was because both streams use get_form_responses method from to call the API.

IDS.LANDINGS: {"replication_method": "INCREMENTAL", "replication_keys": ["landed_at"]},
IDS.ANSWERS: {"replication_method": "INCREMENTAL", "replication_keys": ["landed_at"]},

I'm not sure why landed_at was chosen for the answers stream, but maybe there was a case where it would be null if a form isn't submitted, possibly? The answers schema doesn't even have submitted_at as one of it's field.

To keep it consistent with the tap's behavior on the answers stream I think we should leave it as is, but I did test it with tap-tester locally and all tests were passing if I switched the landings stream to use submitted_at as the replication key.

A more robust solution would be to switch both the landings and answers stream to use submitted_at as the replication key given the API limitations when using the after query param. This would require a schema change for the answers stream and might run into data issues if submitted_at can be null.

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Any status on this?

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Any status on this?

@KrisPersonal @luandy64 could this be merged? it fixes an issues for clients in Stitch and is passing tests.

@luandy64 luandy64 merged commit 5dd3da1 into master May 17, 2022
@luandy64 luandy64 deleted the fix-landings-stream-to-be-incremental branch May 17, 2022 14:43
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Successfully merging this pull request may close these issues.

Stitch/Typeform connexion turn into full-synchronization
4 participants