[SPIKE] Figure out the responsibility between express middleware and LB4 routing and sequencing

[hacksparrow]

Description / Steps to reproduce / Feature proposal

Mount LB4 apps (REST servers) as Express (and Express-compatible) middleware

Current Behavior

None

Expected Behavior

#1082 (comment)

Acceptance Criteria

LB4 apps should be mountable as Express or Express-compatible middleware.

• Figure out how to have everything before and after the REST routing handled by express http transport-wise
• blocked by Change (req, res) pair to a single http context object #1292 and Allow app developers to configure custom Express middleware #1293

timeboxed to 1 week

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[shimks]

Technically, the acceptance criteria is already done. @hacksparrow Would you consider the issue non-relevant or do you have specific items in mind that allow express-specific aspects to be compatible with lb4?

@hacksparrow @bajtos @raymondfeng Please hash out the acceptance criteria with more details to how much we want express to be used in lb4.

EDIT: turning this into a spike

[bajtos]

For DP3, we agreed with @raymondfeng that we are not going to expose Express routing/middleware to app developers yet. I am removing this story from DP3 release and epic.

[stale]

This issue has been marked stale because it has not seen activity within six months. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository. This issue will be closed within 30 days of being stale.

[stale]

This issue has been closed due to continued inactivity. Thank you for your understanding. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository.