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step-backwards working!

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This commit is contained in:
Francesco Renzi
2026-01-15 17:05:31 +00:00
committed by GitHub
parent f45c5d0785
commit 7a36a68b15
4 changed files with 1709 additions and 2 deletions
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55
src/Runner.Worker/StepsRunner.cs
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@@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using GitHub.DistributedTask.Expressions2;
@@ -56,6 +57,7 @@ namespace GitHub.Runner.Worker
// The session's IsActive property determines if debugging is actually enabled
var debugSession = HostContext.GetService<IDapDebugSession>();
bool isFirstStep = true;
int stepIndex = 0; // Track step index for checkpoints
while (jobContext.JobSteps.Count > 0 || !checkPostJobActions)
{
@@ -72,6 +74,9 @@ namespace GitHub.Runner.Worker
var step = jobContext.JobSteps.Dequeue();
// Capture remaining steps for potential checkpoint (before we modify the queue)
var remainingSteps = jobContext.JobSteps.ToList();
Trace.Info($"Processing step: DisplayName='{step.DisplayName}'");
ArgUtil.NotNull(step.ExecutionContext, nameof(step.ExecutionContext));
ArgUtil.NotNull(step.ExecutionContext.Global, nameof(step.ExecutionContext.Global));
@@ -192,8 +197,52 @@ namespace GitHub.Runner.Worker
// This happens after expression values are set up so the debugger can inspect variables
if (debugSession?.IsActive == true)
{
// Store step info for checkpoint creation later
debugSession.SetPendingStepInfo(step, jobContext, stepIndex, remainingSteps);
// Pause and wait for user command (next/continue/stepBack/reverseContinue)
await debugSession.OnStepStartingAsync(step, jobContext, isFirstStep);
isFirstStep = false;
// Check if user requested to step back
if (debugSession.HasPendingRestore)
{
var checkpoint = debugSession.ConsumeRestoredCheckpoint();
if (checkpoint != null)
{
// Restore the checkpoint state using the correct checkpoint index
debugSession.RestoreCheckpoint(checkpoint.CheckpointIndex, jobContext);
// Re-queue the steps from checkpoint
while (jobContext.JobSteps.Count > 0)
{
jobContext.JobSteps.Dequeue();
}
// Queue the checkpoint's step and remaining steps
jobContext.JobSteps.Enqueue(checkpoint.CurrentStep);
foreach (var remainingStep in checkpoint.RemainingSteps)
{
jobContext.JobSteps.Enqueue(remainingStep);
}
// Reset step index to checkpoint's index
stepIndex = checkpoint.StepIndex;
// Clear pending step info since we're not executing this step
debugSession.ClearPendingStepInfo();
// Skip to next iteration - will process restored step
continue;
}
}
// User pressed next/continue - create checkpoint NOW
// This captures any REPL modifications made while paused
if (debugSession.ShouldCreateCheckpoint())
{
debugSession.CreateCheckpointForPendingStep(jobContext);
}
}
// Evaluate condition
@@ -253,6 +302,9 @@ namespace GitHub.Runner.Worker
jobCancelRegister?.Dispose();
jobCancelRegister = null;
}
// Clear pending step info after step completes
debugSession?.ClearPendingStepInfo();
}
}
@@ -274,6 +326,9 @@ namespace GitHub.Runner.Worker
debugSession.OnStepCompleted(step);
}
// Increment step index for checkpoint tracking
stepIndex++;
Trace.Info($"Current state: job state = '{jobContext.Result}'");
}