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## Summary Update the `RouteID` to use the `policy.ID` if it is set. This makes it so that updated routes use a stable identifier between updates so if the envoy control plane is updated before the authorize service's internal definitions (or vice-versa) the authorize service will still be able to match the route. The current behavior results in a 404 if envoy passes the old route id. The new behavior will result in inconsistency, but it should be quickly remedied. To help with debugging 4 new fields were added to the authorize check log. The `route-id` and `route-checksum` as the authorize sees it and the `envoy-route-id` and `envoy-route-checksum` as envoy sees it. I also updated the way we send updates to envoy to try and model their recommended approach: > In general, to avoid traffic drop, sequencing of updates should follow a make before break model, wherein: > > - CDS updates (if any) must always be pushed first. > - EDS updates (if any) must arrive after CDS updates for the respective clusters. > - LDS updates must arrive after corresponding CDS/EDS updates. > - RDS updates related to the newly added listeners must arrive after CDS/EDS/LDS updates. > - VHDS updates (if any) related to the newly added RouteConfigurations must arrive after RDS updates. > - Stale CDS clusters and related EDS endpoints (ones no longer being referenced) can then be removed. This should help avoid 404s when configuration is being updated. ## Related issues - [ENG-2386](https://linear.app/pomerium/issue/ENG-2386/large-number-of-routes-leads-to-404s-and-slowness) ## Checklist - [x] reference any related issues - [x] updated unit tests - [x] add appropriate label (`enhancement`, `bug`, `breaking`, `dependencies`, `ci`) - [x] ready for review |
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| .. | ||
| access.go | ||
| authorize.go | ||
| debug.go | ||
| grpc.go | ||
| headers.go | ||
| headers_test.go | ||
| log.go | ||
| log_test.go | ||
| middleware.go | ||
| middleware_test.go | ||
| multiwriter.go | ||
| warnings.go | ||