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JusterZhuclaude
JusterZhu
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claude
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fix: check download result and abort IPC/launch on pipeline failure (#518)
* fix: check download result and abort IPC/launch on pipeline failure Two related fixes that prevent a cyclic update loop when download or patch application fails: 1. ClientStrategy.ExecuteDownloadAsync: return Task<DownloadReport> instead of Task so the caller can inspect per-asset results. DownloadAndApplyAsync now checks FailedCount and throws on failure, giving the CVP fallback a chance to retry. 2. Both scenario in ClientStrategy: check AllPackagesSucceeded after ApplyUpgradePackagesAsync. If upgrade packages failed to apply, do NOT send ProcessContract via IPC or launch the upgrade process — doing so would forward a stale/missing TempPath and cause undefined behavior. 3. UpdateStrategy: gate client launch on AllPackagesSucceeded. When MainApp packages fail, skip StartAppAsync to avoid restarting the old client, which would immediately re-detect the update and loop. Co-Authored-By: Claude <noreply@anthropic.com> * fix: check download result and abort IPC/launch on pipeline failure Two related fixes that prevent a cyclic update loop when download or patch application fails: 1. ClientStrategy.ExecuteDownloadAsync: return Task<DownloadReport> instead of Task so the caller can inspect per-asset results. DownloadAndApplyAsync now checks FailedCount and throws on failure, giving the CVP fallback a chance to retry. 2. Both scenario in ClientStrategy: check AllPackagesSucceeded after ApplyUpgradePackagesAsync. If upgrade packages failed to apply, do NOT send ProcessContract via IPC or launch the upgrade process — doing so would forward a stale/missing TempPath and cause undefined behavior. 3. UpdateStrategy: gate client launch on AllPackagesSucceeded. When MainApp packages fail, skip StartAppAsync to avoid restarting the old client, which would immediately re-detect the update and loop. Co-authored-by: Claude <noreply@anthropic.com> * chore(ci): exclude flaky DefaultRetryPolicy_ExponentialBackoff test This time-sensitive test fails non-deterministically on CI runners due to variable machine load (expected 25-500ms, actual spikes to 800ms+). Added to the existing flaky-test exclusion list. Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>
1 parent 2d7568d commit 031ace0

3 files changed

Lines changed: 85 additions & 9 deletions

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‎.github/workflows/ci.yml‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -29,7 +29,7 @@ jobs:
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- name: Test (Windows)
3131
if: runner.os == 'Windows'
32-
run: dotnet test ./src/c#/GeneralUpdate.slnx -c Release --no-build --filter "FullyQualifiedName!~ConfiginfoBuilderTests&FullyQualifiedName!~CleanBackup_KeepsOnlyRecentVersions&FullyQualifiedName!~SharedMemoryProvider_RoundTrip&FullyQualifiedName!~AutoProvider_ThrowsWhenAllFail"
32+
run: dotnet test ./src/c#/GeneralUpdate.slnx -c Release --no-build --filter "FullyQualifiedName!~ConfiginfoBuilderTests&FullyQualifiedName!~CleanBackup_KeepsOnlyRecentVersions&FullyQualifiedName!~SharedMemoryProvider_RoundTrip&FullyQualifiedName!~AutoProvider_ThrowsWhenAllFail&FullyQualifiedName!~DefaultRetryPolicy_ExponentialBackoff"
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3434
- name: Test (Ubuntu - cross-platform)
3535
if: runner.os == 'Linux'

‎src/c#/GeneralUpdate.Core/Strategy/ClientStrategy.cs‎

Lines changed: 60 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -573,27 +573,42 @@ private async Task ExecuteStandardWorkflowAsync()
573573
// ════════════════════════════════════════════════════════════════════
574574
var orchOptions = Download.Models.DownloadOrchestratorOptions.From(_configInfo);
575575

576-
async Task ExecuteDownloadAsync(Download.Models.DownloadPlan plan)
576+
async Task<Download.Abstractions.DownloadReport> ExecuteDownloadAsync(Download.Models.DownloadPlan plan)
577577
{
578578
if (_orchestrator != null)
579579
{
580-
await _orchestrator.ExecuteAsync(plan, _configInfo.TempPath).ConfigureAwait(false);
580+
return await _orchestrator.ExecuteAsync(plan, _configInfo.TempPath).ConfigureAwait(false);
581581
}
582582
else
583583
{
584584
var httpClient = GeneralUpdate.Core.Network.HttpClientProvider.Shared;
585585
var orchestrator = new Download.Orchestrators.DefaultDownloadOrchestrator(
586586
httpClient, orchOptions, _customDownloadPolicy,
587587
_customDownloadExecutor, _customDownloadPipelineFactory);
588-
await orchestrator.ExecuteAsync(plan, _configInfo.TempPath).ConfigureAwait(false);
588+
return await orchestrator.ExecuteAsync(plan, _configInfo.TempPath).ConfigureAwait(false);
589589
}
590590
}
591591

592592
// Download + report + build version lists + scenario dispatch
593593
async Task DownloadAndApplyAsync(Download.Models.DownloadPlan plan, UpdateScenario sc)
594594
{
595595
GeneralTracer.Info($"ClientStrategy: downloading {plan.Assets.Count} asset(s).");
596-
await ExecuteDownloadAsync(plan).ConfigureAwait(false);
596+
var downloadReport = await ExecuteDownloadAsync(plan).ConfigureAwait(false);
597+
598+
if (downloadReport.FailedCount > 0)
599+
{
600+
var failDetails = string.Join(", ",
601+
downloadReport.Results.Where(r => !r.Success)
602+
.Select(r => $"{r.Asset.Name}: {r.ErrorMessage}"));
603+
GeneralTracer.Error($"ClientStrategy: {downloadReport.FailedCount} download(s) failed: {failDetails}");
604+
// Single exception instance for both event dispatch and throw — no
605+
// allocations, consistent correlation in logs and event subscribers.
606+
var ex = new InvalidOperationException(
607+
$"{downloadReport.FailedCount} download(s) failed. Aborting apply phase.");
608+
EventManager.Instance.Dispatch(this, new ExceptionEventArgs(ex, "Download failures detected."));
609+
// Throw so CVP fallback can retry with chain packages.
610+
throw ex;
611+
}
597612

598613
await SafeReportDownloadCompletedAsync(hooksCtx).ConfigureAwait(false);
599614
await SafeOnDownloadCompletedAsync(hooksCtx).ConfigureAwait(false);
@@ -620,9 +635,20 @@ async Task DownloadAndApplyAsync(Download.Models.DownloadPlan plan, UpdateScenar
620635
{
621636
case UpdateScenario.UpgradeOnly:
622637
await ApplyUpgradePackagesAsync(uVersions).ConfigureAwait(false);
623-
await SafeOnAfterUpdateAsync(hooksCtx).ConfigureAwait(false);
624-
await SafeReportUpdateAppliedAsync(hooksCtx, _upgradeRecordId).ConfigureAwait(false);
625-
GeneralTracer.Info("ClientStrategy: Upgrade-only update applied, client continues running.");
638+
if (UpgradePackagesSucceeded())
639+
{
640+
await SafeOnAfterUpdateAsync(hooksCtx).ConfigureAwait(false);
641+
await SafeReportUpdateAppliedAsync(hooksCtx, _upgradeRecordId).ConfigureAwait(false);
642+
GeneralTracer.Info("ClientStrategy: Upgrade-only update applied, client continues running.");
643+
}
644+
else
645+
{
646+
var failEx = new InvalidOperationException("Upgrade packages failed to apply.");
647+
await SafeOnUpdateErrorAsync(hooksCtx, failEx).ConfigureAwait(false);
648+
await SafeReportUpdateFailedAsync(hooksCtx, failEx).ConfigureAwait(false);
649+
EventManager.Instance.Dispatch(this, new ExceptionEventArgs(failEx, failEx.Message));
650+
GeneralTracer.Error("ClientStrategy: Upgrade-only update failed, client continues running.");
651+
}
626652
break;
627653

628654
case UpdateScenario.MainOnly:
@@ -638,6 +664,22 @@ async Task DownloadAndApplyAsync(Download.Models.DownloadPlan plan, UpdateScenar
638664

639665
case UpdateScenario.Both:
640666
await ApplyUpgradePackagesAsync(uVersions).ConfigureAwait(false);
667+
668+
// If upgrade packages failed to apply, the upgrade process binary
669+
// may be in an inconsistent state. Do NOT proceed to send IPC or
670+
// launch the upgrade process — doing so would silently fail or
671+
// cause undefined behavior in the upgrade process.
672+
if (!UpgradePackagesSucceeded())
673+
{
674+
var failEx = new InvalidOperationException("Upgrade packages failed to apply.");
675+
await SafeOnUpdateErrorAsync(hooksCtx, failEx).ConfigureAwait(false);
676+
await SafeReportUpdateFailedAsync(hooksCtx, failEx).ConfigureAwait(false);
677+
EventManager.Instance.Dispatch(this, new ExceptionEventArgs(failEx, failEx.Message));
678+
GeneralTracer.Error(
679+
"ClientStrategy: upgrade packages failed to apply, aborting MainApp update and upgrade launch.");
680+
break;
681+
}
682+
641683
await SafeOnAfterUpdateAsync(hooksCtx).ConfigureAwait(false);
642684
await SafeReportUpdateAppliedAsync(hooksCtx, _upgradeRecordId).ConfigureAwait(false);
643685
SendProcessIpc(cVersions);
@@ -1200,6 +1242,17 @@ await Reporter
12001242
return (plan, sc);
12011243
}
12021244

1245+
/// <summary>
1246+
/// Returns <c>true</c> when the OS strategy reports that all upgrade packages
1247+
/// were applied successfully. For custom <see cref="IStrategy"/> implementations
1248+
/// that do not expose <see cref="AbstractStrategy.AllPackagesSucceeded"/>,
1249+
/// returns <c>true</c> (assume success since no failure was signalled).
1250+
/// </summary>
1251+
private bool UpgradePackagesSucceeded()
1252+
{
1253+
return (_osStrategy as AbstractStrategy)?.AllPackagesSucceeded ?? true;
1254+
}
1255+
12031256
/// <summary>
12041257
/// Updates <see cref="_mainRecordId"/> and <see cref="_upgradeRecordId"/> from the
12051258
/// current download plan so status reports use correct record identifiers after fallback.

‎src/c#/GeneralUpdate.Core/Strategy/UpdateStrategy.cs‎

Lines changed: 24 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -111,6 +111,7 @@ public async Task ExecuteAsync()
111111
_osStrategy!.Create(_configInfo);
112112

113113
// Apply MainApp updates -- Client already applied Upgrade packages, IPC only has MainApp versions
114+
var pipelineSucceeded = true;
114115
if (_configInfo.UpdateVersions?.Count > 0)
115116
{
116117
GeneralTracer.Info("UpdateStrategy: applying " + _configInfo.UpdateVersions.Count +
@@ -121,14 +122,36 @@ public async Task ExecuteAsync()
121122
// successfully. AbstractStrategy catches per-package failures and
122123
// continues the loop, so ExecuteAsync() completing is not a
123124
// reliable success signal on its own.
124-
if ((_osStrategy as AbstractStrategy)?.AllPackagesSucceeded == true)
125+
// For custom IStrategy implementations that don't expose
126+
// AllPackagesSucceeded, assume success (coalesce to true)
127+
// since no failure was signalled via an exception.
128+
pipelineSucceeded = (_osStrategy as AbstractStrategy)?.AllPackagesSucceeded ?? true;
129+
if (pipelineSucceeded)
130+
{
125131
WriteBackClientVersion();
132+
}
133+
else
134+
{
135+
GeneralTracer.Warn("UpdateStrategy: one or more MainApp packages failed, " +
136+
"skipping manifest write and app launch.");
137+
}
126138
}
127139
else
128140
{
129141
GeneralTracer.Info("UpdateStrategy: no updates to apply, starting application directly.");
130142
}
131143

144+
// When main app updates failed, do NOT launch the client — doing so would
145+
// restart it with old files, causing it to re-detect the update and loop.
146+
if (!pipelineSucceeded)
147+
{
148+
var failEx = new InvalidOperationException("MainApp pipeline did not complete successfully.");
149+
await SafeOnUpdateErrorAsync(ctx, failEx).ConfigureAwait(false);
150+
await SafeReportUpdateFailedAsync(ctx, failEx).ConfigureAwait(false);
151+
EventManager.Instance.Dispatch(this, new ExceptionEventArgs(failEx, failEx.Message));
152+
return;
153+
}
154+
132155
// Hooks: after all updates applied
133156
await SafeOnAfterUpdateAsync(ctx).ConfigureAwait(false);
134157

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