feat: synchronise provider changes with WatchAIProviders - #27091
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Cherry-pick of #26797, which was accidentally merged into the stale graphite-base/26797 branch instead of main and so never landed. Conflicts with current main are resolved in the following commit to keep this commit a faithful copy of the original PR. Adds a WatchAIProviders streaming RPC to the ProviderConfigurator service so a running standalone AI Gateway refetches its provider set when the provider configuration changes. The server subscribes to AIProvidersChangedChannel (published by the provider CRUD endpoints) and forwards each event as a payload-free signal, plus one signal on subscribe; the gateway calls GetAIProviders on each signal to rebuild its pool. The aibridged API is bumped to v1.2. Refs https://linear.app/codercom/issue/AIGOV-465
Isolated from the preceding cherry-pick commit so reviewers can see exactly what changed when re-landing #26797 on current main: - coderd/aibridged/proto/aibridged.pb.go: regenerated via the proto make target (the cherry-picked copy was generated against the older proto). - enterprise/cli/aigatewaystart.go: union the import block; main added os and strings while the PR added sync. - coderd/aibridgedserver/aibridgedserver_test.go: three NewServer call sites that landed on main after the branch diverged now pass the new pubsub argument.
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pawbana
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Why
PR #26797 was accidentally merged into the stale
graphite-base/26797branch instead ofmain(Graphite picked the wrong base), so its changes never landed onmain. This PR re-lands that work as a clean cherry-pick onto the currentmain.What
Adds a
WatchAIProvidersstreaming RPC to theProviderConfiguratorservice so a running standalone AI Gateway refetches its provider set when the provider configuration changes. The server subscribes toAIProvidersChangedChannel(published by the provider CRUD endpoints) and forwards each event as a payload-free signal, plus one signal on subscribe; the gateway callsGetAIProviderson each signal to rebuild its pool. The aibridged API is bumped to v1.2.Env-seeded providers don't need a signal: seeding finishes before coderd serves the gateway connection, so the gateway's initial fetch already reflects the seeded set.
For reviewers
The change is split into two commits to make review easy:
feat: synchronise provider changes with WatchAIProvidersis a faithful cherry-pick of feat: synchronise provider changes withWatchAIProviders#26797, identical to the originally reviewed PR. It is committed without pre-commit hooks because it does not build against currentmainon its own.fix: resolve cherry-pick conflicts against maincontains only the deltas needed to re-land on currentmain, and passes the full pre-commit suite:coderd/aibridged/proto/aibridged.pb.goregenerated via the proto make target (the cherry-picked copy was generated against the older proto).enterprise/cli/aigatewaystart.goimport block unioned;mainaddedosandstringswhile the PR addedsync.aibridgedserver.NewServertest call sites that landed onmainafter the original branch diverged now pass the newpubsubargument.Refs https://linear.app/codercom/issue/AIGOV-465
This PR was produced by opencode (agent) using the
anthropic/claude-opus-4-8model, under human direction and review.