contractcourt: modify the incoming contest resolver to use concurrent… #8024
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… queue
In this commit, we modify the incoming contest resolver to use a concurrent queue. This is meant to ensure that the invoice registry subscription loop never blocks. This change is meant to be minimal and implements option
5
as outlined here:#8023.
With this change, the inner loop of the subscription dispatch method in the invoice registry will no longer block, as the concurrent queue uses a fixed buffer of a queue, then overflows into another queue when that gets full.
Fixes #7917