[BREAKING] .NET: Decouple Checkpointing from Run/StreamAsync APIs (#4037)

* [BREAKING] refactor: Decouple Checkpointing and Execution APIs

With this change, Checkpointing becomes an property of an IWorkflowExecutionEnvironment. This lets environments that are tightly-coupled to their CheckpointManager avoid needing to present APIs that would not work (e.g. taking in an InMemory CheckpointManager for Durable Tasks, for example)

* refactor: Normalize IsCheckpointingEnabled naming
This commit is contained in:
Jacob Alber
2026-02-19 11:41:35 -05:00
committed by GitHub
Unverified
parent fd4e6e816c
commit c73bd87503
34 changed files with 299 additions and 317 deletions
@@ -2,9 +2,9 @@
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Agents.AI.Workflows.Checkpointing;
using Microsoft.Agents.AI.Workflows.Execution;
namespace Microsoft.Agents.AI.Workflows.InProc;
@@ -15,24 +15,44 @@ namespace Microsoft.Agents.AI.Workflows.InProc;
/// </summary>
public sealed class InProcessExecutionEnvironment : IWorkflowExecutionEnvironment
{
internal InProcessExecutionEnvironment(ExecutionMode mode, bool enableConcurrentRuns = false)
internal InProcessExecutionEnvironment(ExecutionMode mode, bool enableConcurrentRuns = false, CheckpointManager? checkpointManager = null)
{
this.ExecutionMode = mode;
this.EnableConcurrentRuns = enableConcurrentRuns;
this.CheckpointManager = checkpointManager;
}
/// <summary>
/// Configure a new execution environment, inheriting configuration for the current one with the specified <see cref="Workflows.CheckpointManager"/>
/// for use in checkpointing.
/// </summary>
/// <param name="checkpointManager">The CheckpointManager to use for checkpointing.</param>
/// <returns>
/// A new InProcess <see cref="IWorkflowExecutionEnvironment"/> configured for checkpointing, inheriting configuration from the current
/// environment.
/// </returns>
public InProcessExecutionEnvironment WithCheckpointing(CheckpointManager? checkpointManager)
{
return new(this.ExecutionMode, this.EnableConcurrentRuns, checkpointManager);
}
internal ExecutionMode ExecutionMode { get; }
internal bool EnableConcurrentRuns { get; }
internal CheckpointManager? CheckpointManager { get; }
internal ValueTask<AsyncRunHandle> BeginRunAsync(Workflow workflow, ICheckpointManager? checkpointManager, string? runId, IEnumerable<Type> knownValidInputTypes, CancellationToken cancellationToken)
/// <inheritdoc/>
public bool IsCheckpointingEnabled => this.CheckpointManager != null;
internal ValueTask<AsyncRunHandle> BeginRunAsync(Workflow workflow, string? runId, IEnumerable<Type> knownValidInputTypes, CancellationToken cancellationToken)
{
InProcessRunner runner = InProcessRunner.CreateTopLevelRunner(workflow, checkpointManager, runId, this.EnableConcurrentRuns, knownValidInputTypes);
InProcessRunner runner = InProcessRunner.CreateTopLevelRunner(workflow, this.CheckpointManager, runId, this.EnableConcurrentRuns, knownValidInputTypes);
return runner.BeginStreamAsync(this.ExecutionMode, cancellationToken);
}
internal ValueTask<AsyncRunHandle> ResumeRunAsync(Workflow workflow, ICheckpointManager? checkpointManager, CheckpointInfo fromCheckpoint, IEnumerable<Type> knownValidInputTypes, CancellationToken cancellationToken)
internal ValueTask<AsyncRunHandle> ResumeRunAsync(Workflow workflow, CheckpointInfo fromCheckpoint, IEnumerable<Type> knownValidInputTypes, CancellationToken cancellationToken)
{
InProcessRunner runner = InProcessRunner.CreateTopLevelRunner(workflow, checkpointManager, fromCheckpoint.RunId, this.EnableConcurrentRuns, knownValidInputTypes);
InProcessRunner runner = InProcessRunner.CreateTopLevelRunner(workflow, this.CheckpointManager, fromCheckpoint.RunId, this.EnableConcurrentRuns, knownValidInputTypes);
return runner.ResumeStreamAsync(this.ExecutionMode, fromCheckpoint, cancellationToken);
}
@@ -42,7 +62,7 @@ public sealed class InProcessExecutionEnvironment : IWorkflowExecutionEnvironmen
string? runId = null,
CancellationToken cancellationToken = default)
{
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, checkpointManager: null, runId: runId, [], cancellationToken)
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, runId, [], cancellationToken)
.ConfigureAwait(false);
return new(runHandle);
@@ -55,63 +75,42 @@ public sealed class InProcessExecutionEnvironment : IWorkflowExecutionEnvironmen
string? runId = null,
CancellationToken cancellationToken = default) where TInput : notnull
{
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, checkpointManager: null, runId: runId, [], cancellationToken)
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, runId, [], cancellationToken)
.ConfigureAwait(false);
return await runHandle.EnqueueAndStreamAsync(input, cancellationToken).ConfigureAwait(false);
}
/// <inheritdoc/>
public async ValueTask<Checkpointed<StreamingRun>> StreamAsync(
Workflow workflow,
CheckpointManager checkpointManager,
string? runId = null,
CancellationToken cancellationToken = default)
[MemberNotNull(nameof(CheckpointManager))]
private void VerifyCheckpointingConfigured()
{
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, checkpointManager, runId: runId, [], cancellationToken)
.ConfigureAwait(false);
return await runHandle.WithCheckpointingAsync<StreamingRun>(() => new(new StreamingRun(runHandle)))
.ConfigureAwait(false);
if (this.CheckpointManager == null)
{
throw new InvalidOperationException("Checkpointing is not configured for this execution environment. Please use the InProcessExecutionEnvironment.WithCheckpointing method to attach a CheckpointManager.");
}
}
/// <inheritdoc/>
public async ValueTask<Checkpointed<StreamingRun>> StreamAsync<TInput>(
Workflow workflow,
TInput input,
CheckpointManager checkpointManager,
string? runId = null,
CancellationToken cancellationToken = default) where TInput : notnull
{
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, checkpointManager, runId: runId, [], cancellationToken)
.ConfigureAwait(false);
return await runHandle.WithCheckpointingAsync(() => runHandle.EnqueueAndStreamAsync(input, cancellationToken))
.ConfigureAwait(false);
}
/// <inheritdoc/>
public async ValueTask<Checkpointed<StreamingRun>> ResumeStreamAsync(
public async ValueTask<StreamingRun> ResumeStreamAsync(
Workflow workflow,
CheckpointInfo fromCheckpoint,
CheckpointManager checkpointManager,
CancellationToken cancellationToken = default)
{
AsyncRunHandle runHandle = await this.ResumeRunAsync(workflow, checkpointManager, fromCheckpoint, [], cancellationToken)
this.VerifyCheckpointingConfigured();
AsyncRunHandle runHandle = await this.ResumeRunAsync(workflow, fromCheckpoint, [], cancellationToken)
.ConfigureAwait(false);
return await runHandle.WithCheckpointingAsync<StreamingRun>(() => new(new StreamingRun(runHandle)))
.ConfigureAwait(false);
return new(runHandle);
}
private async ValueTask<AsyncRunHandle> BeginRunHandlingChatProtocolAsync<TInput>(Workflow workflow,
TInput input,
CheckpointManager? checkpointManager,
string? runId = null,
CancellationToken cancellationToken = default)
{
ProtocolDescriptor descriptor = await workflow.DescribeProtocolAsync(cancellationToken).ConfigureAwait(false);
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, checkpointManager, runId, descriptor.Accepts, cancellationToken)
AsyncRunHandle runHandle = await this.BeginRunAsync(workflow, runId, descriptor.Accepts, cancellationToken)
.ConfigureAwait(false);
await runHandle.EnqueueMessageAsync(input, cancellationToken).ConfigureAwait(false);
@@ -134,7 +133,6 @@ public sealed class InProcessExecutionEnvironment : IWorkflowExecutionEnvironmen
AsyncRunHandle runHandle = await this.BeginRunHandlingChatProtocolAsync(
workflow,
input,
checkpointManager: null,
runId,
cancellationToken)
.ConfigureAwait(false);
@@ -145,38 +143,16 @@ public sealed class InProcessExecutionEnvironment : IWorkflowExecutionEnvironmen
}
/// <inheritdoc/>
public async ValueTask<Checkpointed<Run>> RunAsync<TInput>(
Workflow workflow,
TInput input,
CheckpointManager checkpointManager,
string? runId = null,
CancellationToken cancellationToken = default) where TInput : notnull
{
AsyncRunHandle runHandle = await this.BeginRunHandlingChatProtocolAsync(
workflow,
input,
checkpointManager,
runId,
cancellationToken)
.ConfigureAwait(false);
Run run = new(runHandle);
await run.RunToNextHaltAsync(cancellationToken).ConfigureAwait(false);
return await runHandle.WithCheckpointingAsync(() => new ValueTask<Run>(run))
.ConfigureAwait(false);
}
/// <inheritdoc/>
public async ValueTask<Checkpointed<Run>> ResumeAsync(
public async ValueTask<Run> ResumeAsync(
Workflow workflow,
CheckpointInfo fromCheckpoint,
CheckpointManager checkpointManager,
CancellationToken cancellationToken = default)
{
AsyncRunHandle runHandle = await this.ResumeRunAsync(workflow, checkpointManager, fromCheckpoint, [], cancellationToken)
this.VerifyCheckpointingConfigured();
AsyncRunHandle runHandle = await this.ResumeRunAsync(workflow, fromCheckpoint, [], cancellationToken)
.ConfigureAwait(false);
return await runHandle.WithCheckpointingAsync<Run>(() => new(new Run(runHandle)))
.ConfigureAwait(false);
return new(runHandle);
}
}