Cloud Ports: refresh discovery when Ports expands - #12314
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📝 WalkthroughWalkthroughPorts group nodes now request fresh machine discovery when expanded. A machine refresh coordinator coalesces duplicate requests and cancels active refreshes during polling stops and authentication transitions. Tests cover expansion behavior and per-machine coalescing. ChangesCloud port refresh
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant User
participant CloudTreeOutlineView
participant MachinesPanelViewModel
participant CloudMachineRefreshCoordinator
participant SurfaceCatalog
User->>CloudTreeOutlineView: Expand Ports group
CloudTreeOutlineView->>MachinesPanelViewModel: Request machine refresh
MachinesPanelViewModel->>CloudMachineRefreshCoordinator: Queue machine refresh
CloudMachineRefreshCoordinator->>SurfaceCatalog: Refresh machine with force
SurfaceCatalog-->>CloudMachineRefreshCoordinator: Complete refresh
Merge Risk: 🔵 Low · up to A retired machine refresh can still start after polling stops or authentication changes, causing unnecessary stale refresh work. Add the cancellation check before merge. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (2 errors, 1 warning)
✅ Passed checks (22 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 21.05% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 19 functions across 8 files. (1 skipped: 1 unsupported.) Full details: Cmux Swift Package BoundariesExplanation The diff adds Resolution Extract the coordinator into a small SwiftPM target such as Full details: Cmux Architecture RethinkExplanation The diff adds a second owner and entrypoint for the same refresh behavior. Resolution Use one scoped refresh action, such as
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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| func outlineViewItemDidExpand(_ notification: Notification) { | ||
| guard !isUpdatingProgrammatically, let node = notification.userInfo?["NSObject"] as? CloudTreeNode else { return } | ||
| expansionStore.setExpanded(true, node: node) | ||
| if node.refreshesOnExpansion { nodeActions.refresh() } |
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Expand refresh still uses port cache
Medium Severity
Expanding Ports calls nodeActions.refresh(), which runs the shared refresh(tree: true) path. That re-sync still passes force: false into the provider port scan, so a warm portsCache can keep a recent empty inventory on screen after a service has started.
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Outdated on the current HEAD: Ports expansion now calls the machine-scoped refreshMachine closure, which invokes SurfaceCatalog.refresh(machine:force: true), bypassing the port cache.
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Actionable comments posted: 1
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Inline comments:
In `@cmuxTests/CloudTreeMachineMenuTests.swift`:
- Line 28: Update the refreshesOnExpansion assertion in the
CloudTreeMachineMenuTests test to use the CloudTreeNode instance as its receiver
rather than node.kind, while preserving the existing expected value.
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Inline comments:
In `@Sources/Cloud/MachinesPanelView.swift`:
- Line 449: Update the refreshMachine flow and CloudProviderRefreshCoordinator
so concurrent forced refresh requests are coalesced into a single provider
refresh rather than queued sequentially; preserve serialized execution and
stale-publication protection, and add or update coverage to assert only one
provider request occurs for concurrent forced refreshes.
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Inline comments:
In `@Sources/Cloud/CloudMachineRefreshCoordinator.swift`:
- Line 19: Update the task closure around operation(machine) to check
Task.isCancelled immediately before invoking the operation, so cancellation
prevents the operation from starting. Add a regression test covering refresh
followed immediately by cancelAll and a main-actor yield, asserting the
operation was not invoked.
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Problem
Cloud Ports could remain on
No reachable portsafter a service started in the VM. Port discovery is a live inventory, but expanding the Ports group only toggled the outline row; it did not request a fresh provider scan. A previous empty scan therefore stayed visible until the 45-second fleet poll (and the 30-second scan cache could extend that stale state).Fix
CloudTreeNodeActions.refresh()path with the forced tree refresh. This re-reads the fleet and the provider's authenticatedmachine-listening-tcpinventory without duplicating refresh logic.Regression provenance
c864af5fb9adds the behavior test and intentionally fails before the production property exists.62092f2500implements the node decision and expansion hook.Evidence and verification
The live Cloud VM inventory for
vm-d0f983921769457fa46eaca04ee80d62reported:ss -ltn:0.0.0.0:8000listening withpython3 -m http.server 8000.machine-listening-tcpcommand returned that same listener and advertisedmachine-listening-tcp-v1.The tagged Debug build passed on the shared Mac fleet (without launching locally):
issue-12306-cloud-port-discoveryhttp://127.0.0.1:17320/issue-12306-cloud-port-discoverycmux8s-mac-mini.1Hosted focused tests:
cmuxTests/CloudTreeMachineMenuTestsand the panel refresh coalescing coverage inCloudProviderRefreshCoordinatorTests(latest run in progress at handoff).Trade-offs and limits
Expanding Ports now spends one forced refresh for that explicit user action; this is bounded by the existing refresh coordinator and avoids adding a new timer or polling loop. It fixes stale discovery when the group is expanded. A Ports group that stays expanded while a service starts still relies on the existing background poll or the group's Refresh menu item.
No user-facing strings changed. Localization, Swift file-length budget, pbxproj test-wiring, and diff checks pass.
Closes #12306
Note
Low Risk
UI-triggered, coalesced catalog refresh on Ports expand only; no auth or data-mutation paths changed beyond existing refresh APIs.
Overview
Fixes stale Ports inventory (e.g. lingering “No reachable ports”) by triggering a forced per-machine catalog refresh when the user expands a machine’s Ports group, instead of waiting on fleet polling or scan cache.
CloudTreeNode.KindgainsrefreshesOnExpansion(true only for.portsGroup).CloudTreeOutlineViewcallsrefreshMachineon user expansion (skipped during programmatic restore viaisUpdatingProgrammatically).A new
CloudMachineRefreshCoordinatorcoalesces duplicate refresh requests for the same machine while different machines can refresh in parallel;MachinesPanelViewModelwires it toSurfaceCatalog.shared.refresh(machine:force: true)andcancelAll()when polling stops or auth resets.CloudTreeNodeActionsexposesrefreshMachinealongside the existing full-treerefresh.Tests cover Ports expansion signaling and coordinator coalescing/cancellation.
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