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electric-sql / electric

Sync little subsets of your Postgres data into local apps and services.
https://electric-sql.com
Apache License 2.0
6.47k stars 156 forks source link

feat: enable error handler to recover from failed HTTP requests #2011

Closed kevin-dp closed 1 day ago

kevin-dp commented 2 days ago

This PR modifies the onError handler that is supported by the shape stream such that it can recover from certain HTTP request errors. For example, if the HTTP request fails with a 401 because of an expired token, the handler could fetch a new token, and try again by returning the modified HTTP headers. The shapestream will then retry.

Accompanying docs PR: https://github.com/electric-sql/electric/pull/2018

KyleAMathews commented 2 days ago

Should we make the onError handler async such that it can for instance fetch the new token asynchronously?

yeah, that'll be a common requirement.

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