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route blinding [4/4]: update MC on receive from blinded path #9004

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@ellemouton ellemouton commented Aug 14, 2024

In this PR, we start persisting invoice blinded path info. Then, when we receive a payment from a blinded path, we can use this info to report success to mission control. This will then ensure that future selected routes for blinded paths are of better quality.

Fixes #8991
(Addresses part 4 of #6690)

Depends on:

TODO:

  • write an itest.

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@ellemouton ellemouton linked an issue Aug 14, 2024 that may be closed by this pull request
@ellemouton ellemouton changed the title route blinding: update MC on receive from blinded path route blinding [4/4]: update MC on receive from blinded path Aug 14, 2024
@ellemouton ellemouton force-pushed the rb-updateMC branch 3 times, most recently from 97fba78 to b9d6a9c Compare August 15, 2024 07:53
@saubyk saubyk added this to the v0.19.0 milestone Aug 15, 2024
@ellemouton ellemouton added the size/mega large, significant context needed, over 1000 lines label Aug 22, 2024
This new struct holds the zpay32.BlindedPaymentPath along with other
useful info about the constructed path like:
1) the session key: which we can later use (as the path constructor) to
   decrypt the blobs we sent to each blinded hop in the path.
2) the last ephemeral pub key which we can use to uniquely identify this
   path.
Move it to the models package to avoid import cycles later on.
instead of route.Route. This will be useful for a later commit when we
only have access to MCRoute and want to report success to MC.
Note that then new field is not yet persisted.
in the new "blinded-paths" namespace.
Start querying blinded path probabilites from the new MC namespace where
the results of successful blinded path receives will be written to.
This commit adds two new tables: blinded_paths and blinded_path_hops. A
single invoice can have multiple blinded_path entries and a single
blinded_path can have multiple blinded_paths.
The commit also adds various queries for the two new tables.
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Route Blinding: Report successful receives to Mission Control
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