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Add kcap local status, start, stop, restart, logs and open - #1602
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status takes no lock and never probes the instance lock while the service may start the server: a probe at that moment would make the server refuse to run. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely names the six local commands added by the pull request. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
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PR Summary by QodoAdd local server management and diagnostic commands
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Reviewed commit: c09290bfdc
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| var (exit, stdout, _) = ServiceProcess.Run("lsof", "-nP", $"-iTCP:{port.ToString(CultureInfo.InvariantCulture)}", "-sTCP:LISTEN", "-Fpc"); | ||
| return exit == 0 ? Parse(stdout) : null; | ||
| } catch (Exception ex) when (ex is System.ComponentModel.Win32Exception or InvalidOperationException) { | ||
| return null; |
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On supported Linux installations where lsof is not installed, this call throws and the catch silently reports that no process owns the port. A port conflict then makes kcap local status claim the server is merely starting and can make kcap local start wait for the full ten-minute readiness budget instead of naming the holder; the repository neither installs nor checks for lsof, so use a Linux-native fallback or surface the unavailable probe.
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Not fixed here: macOS, the target of this PR, always ships lsof. Linux is AI-3898, which owns a Linux-native holder probe (or surfacing the missing tool). Until then a missing lsof only loses the holder's name; start still falls back to the auth-config identity check.
| if (await LocalServerHealth.ReadAsync(stack.Local, unit, stack.Time, ct) is ServerHealth.Answered { Ready: true } | ||
| && activity is UnitActivity.Running) return; |
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When another local Capacitor-compatible process already owns the configured port and exposes both /healthz/ready and /auth/config, the newly started service can still be reported as Running briefly before its bind failure. This early return bypasses the holder check below, and the subsequent auth probe also succeeds against the foreign process, so kcap local start incorrectly reports this installation as ready; verify the listening PID before returning on health.
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Fixed in 3f02274: the holder check now runs before the ready return (test Start_does_not_take_a_ready_answer_from_another_listener).
| case UnitActivity.Restarting(var code) when lastPid is not null: | ||
| restarts++; | ||
| lastPid = null; | ||
| if (restarts >= RestartsBeforeGivingUp) | ||
| throw Failed($"The server keeps exiting{ExitCode(code)}. kcap local logs shows why; kcap local status shows what it is doing now."); |
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For a server that starts and exits faster than the one-second polling interval, every observation can be Restarting and lastPid remains null, so this guarded branch never increments restarts. This is a common shape for immediate configuration or startup failures under launchd/systemd, and kcap local start consequently waits the full ten-minute budget rather than giving up after the advertised three restarts; derive the restart count from supervisor state or otherwise account for unseen short-lived processes.
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Fixed in 3f02274: exits are also counted from the service manager's own start counter (launchd runs, systemd NRestarts), so a server never sampled running still trips the limit (test Start_counts_exits_it_never_saw_running).
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Actionable comments posted: 6
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Inline comments:
Review comments at @README.md:
- Line 385: Update the runnable `kcap local logs` example to use `-n 200`
without brackets so it can be copied and accepted by `LogsAsync`.
Review comments at @src/Capacitor.Cli.Core/Resources/help-local.txt:
- Line 10: Complete the `logs` description in the help text by finishing the
sentence after “which holds the stores’” with a clear explanation of what the
server log contains.
Review comments at @src/Capacitor.Cli/Commands/LocalCommand.cs:
- Around line 19-23: Update the local command dispatch for start, stop, restart,
status, and open to reject trailing arguments before invoking their handlers; do
not let WithStack or the lifecycle handlers run when unsupported arguments are
present. Leave logs argument handling unchanged.
- Around line 113-114: Update the readiness check in LocalCommand so `kcap local
open` verifies that the installed service is active and belongs to this
installation before launching the browser; do not treat an `AuthConfigAsync`
response of `Lifted` alone as proof of readiness. Reuse the installed-service
readiness check used by `kcap local status` if available.
- Around line 97-98: Update LogsAsync to read the selected log file
incrementally and retain only the requested trailing lines, including the
default 50-line tail, instead of loading and splitting the complete file.
Preserve the existing tail selection and output behavior.
Review comments at @src/Capacitor.Cli/LocalEdition/LocalStackControl.cs:
- Around line 100-115: Update the activity switch in WaitReadyAsync to handle
UnitActivity.Stopped: fail immediately if the server was previously observed
running, and fail if Stopped persists beyond a short grace period. Include a
clear message that the server exited and how to start it again; preserve the
existing handling for other activity states.
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📒 Files selected for processing: 31
README.mdsrc/Capacitor.Cli.Core/Resources/help-local.txtsrc/Capacitor.Cli.Core/Resources/help-usage.txtsrc/Capacitor.Cli.Core/Telemetry/CommandEvents.cssrc/Capacitor.Cli/Commands/CommandServices.cssrc/Capacitor.Cli/Commands/LocalCommand.cssrc/Capacitor.Cli/Commands/LocalSetupTerminal.cssrc/Capacitor.Cli/LocalEdition/ILocalServerService.cssrc/Capacitor.Cli/LocalEdition/LocalLogFiles.cssrc/Capacitor.Cli/LocalEdition/LocalServerActivityReader.cssrc/Capacitor.Cli/LocalEdition/LocalServerHealth.cssrc/Capacitor.Cli/LocalEdition/LocalServerLaunchdService.cssrc/Capacitor.Cli/LocalEdition/LocalServerSystemdService.cssrc/Capacitor.Cli/LocalEdition/LocalServerSystemdUnit.cssrc/Capacitor.Cli/LocalEdition/LocalStack.cssrc/Capacitor.Cli/LocalEdition/LocalStackControl.cssrc/Capacitor.Cli/LocalEdition/LocalStackProbe.cssrc/Capacitor.Cli/LocalEdition/LocalStatusReader.cssrc/Capacitor.Cli/LocalEdition/LocalStatusReport.cssrc/Capacitor.Cli/LocalEdition/PortHolder.cssrc/Capacitor.Cli/LocalEdition/ServerHealth.cssrc/Capacitor.Cli/LocalEdition/StoreHealth.cssrc/Capacitor.Cli/LocalEdition/UnitActivity.cssrc/Capacitor.Cli/Program.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/Fakes/FakeLocalServerService.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalLogFilesTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalPreflightTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalServerActivityReaderTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStackControlTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStatusReaderTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/PortHolderTests.cs
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The service manager's own start count catches a server that exits between two polls, and a listener only bound to a LAN address shares the port with the server rather than taking it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Actionable comments posted: 1
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Inline comments:
Review comments at @src/Capacitor.Cli/LocalEdition/LocalStackControl.cs:
- Line 123: Update the restart-counter calculation around `exits` to use the
full `NRestarts` delta for systemd, and subtract the initial start only for
launchd when the baseline predates the initial launch. Add a test verifying the
cutoff after exactly three automatic restarts without observing a running PID.
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📒 Files selected for processing: 11
src/Capacitor.Cli/LocalEdition/LocalServerActivityReader.cssrc/Capacitor.Cli/LocalEdition/LocalServerSystemdUnit.cssrc/Capacitor.Cli/LocalEdition/LocalStackControl.cssrc/Capacitor.Cli/LocalEdition/LocalStatusReader.cssrc/Capacitor.Cli/LocalEdition/PortHolder.cssrc/Capacitor.Cli/LocalEdition/UnitActivity.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/Fakes/FakeLocalServerService.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalServerActivityReaderTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStackControlTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStatusReaderTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/PortHolderTests.cs
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A mistyped flag on stop would otherwise persist a stop across logins, and the output log is never rotated, so logs reads it back from the end instead of whole. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Actionable comments posted: 1
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Inline comments:
Review comments at @src/Capacitor.Cli/LocalEdition/LocalLogFiles.cs:
- Around line 30-59: Update Tail to append each backward-read block to chunks
instead of inserting at the front, then reverse chunks before flattening so the
decoded log remains in its original order without quadratic insertion.
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📒 Files selected for processing: 9
README.mdsrc/Capacitor.Cli.Core/Resources/help-local.txtsrc/Capacitor.Cli/Commands/LocalCommand.cssrc/Capacitor.Cli/LocalEdition/LocalLogFiles.cssrc/Capacitor.Cli/LocalEdition/LocalStackControl.cstest/Capacitor.Cli.Tests.Unit/Commands/LocalCommandTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalLogFilesTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStackControlTests.cstest/Capacitor.Cli.Tests.Unit/LocalEdition/LocalStatusReaderTests.cs
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
AI-3489 (no GitHub issue exists for it)
What & why
The commands a user runs the local stack with.
statusexplains every state the supervision cases leave behind: stopped, starting, crash-looping, exited for good, a taken port (naming its holder), leftover stores under a stopped unit, a unit serving another root, an interrupted setup, a stack behind the CLI. Each state comes with what to do.start/stop/restartrun under the lifecycle lease and decide unit ownership under the unit lock.logstails the server's rolling log, which also holds the stores' output.Where to look
ILocalServerServicegainsActivity(pid / last exit), the one seamstatusneeds to tell a crash loop from a stopped or starting server.statusnever probes the instance lock unless nothing can start the server.startstops waiting early on a taken port, a clean exit, or three restarts, rather than sitting out the 10-minute migration budget.Verification
Live on macOS, isolated
HOMEandKCAP_LOCAL_ROOT, bundle 1.3.0-beta.10 viasetup --local --json:kill -9serverUnit suites: Cli 7262 and Core 4787 passed. AOT publish: 0 IL warnings.
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