3.6.0 RC1

[sfmskywalker]

This release focuses on Flowchart execution improvements, stronger runtime correctness, major test coverage expansion, reliability fixes for scheduling/triggers and HTTP content handling, and a platform upgrade to .NET 10 while retaining support for .NET 8 and .NET 9.

Highlights

• Token-centric Flowchart execution model with configurable MergeMode, plus multiple refinements and DI-based configuration (opt-in). See Flowchart: token-based execution + per-activity MergeMode. (PRs: Introduce token-centric Flowchart execution model with configurable MergeMode #6632, Refactor flowchart token handling and enhance merge mode behavior #6937, Refactors and clarifies Flowchart merge modes #6993, Configures Flowchart Execution via DI #7141)
• Upgrade to .NET 10 across the solution (with conditional compatibility dependencies where needed). (PR: Upgrade projects to target .NET 10, add conditional System.Linq.Async dependencies for compatibility with earlier frameworks, and update project files for consistency across the solution. #7062)
• New Activity Testing API and a major expansion of unit/integration/component test coverage across core activities, scheduling, HTTP endpoints, JavaScript, and flowchart execution. (PR: Implement Activity Testing API #6719 and many follow-ups)
• Improved runtime observability & execution record serialization, including snapshots and a new ActivityCompleted notification. (PRs: Add ActivityCompleted notification for workflow activity completion #6675, Introduce activity execution record capturing and serialization improvements #6800, Refactor activity execution record serialization with snapshots #6807)
• Reliability fixes across triggers/scheduling and HTTP content handling (cron delay edge cases, multi-engine trigger registration, Content-Length / charset issues). (PRs: Fix cron triggers silently stopping when delay calculation returns zero #7047, Fix Race Condition Causing Duplicate Trigger Registration in Multi-Engine Environments + Add Concurrency Tests to Prevent Regression #7131, Fix Content-Type header charset auto-appending in HTTP requests #6676, Fix Content-Length mismatch by reworking RawStringContent #7027)

---

Flowchart: token-based execution + per-activity MergeMode (opt-in)

Elsa 3.6.0 introduces an optional token-based execution algorithm for the Flowchart activity. Instead of relying on the previous counter-based scheduling model, the Flowchart can now track progress using tokens that represent a taken connection (from a source activity outcome to a target activity).

When an activity completes, the flowchart:

• Emits tokens for each taken outbound connection (based on the activity’s outcome names).
• Consumes inbound tokens that were waiting for the completed activity.
• Schedules downstream activities based on each target activity’s MergeMode.

New: MergeMode (configurable per activity)

With token-based execution enabled, Flowchart supports a new MergeMode concept that determines how a node behaves when it has multiple inbound connections. You can now specify a merge mode per activity, allowing different “join” semantics within the same flowchart.

In broad terms, merge modes enable behaviors like:

• Stream-like behavior: proceeds without strict joining, helping avoid dead-path waiting.
• Forward-join behavior (Merge): waits for tokens from all forward inbound connections (loop/back edges don’t block).
• Strict join behavior (Converge): waits for tokens from all inbound connections, including loop/back edges.
• First-arrival behavior (Cascade / Race): schedules on the first arriving inbound token; in Race mode, other inbound ancestors are canceled so only the “winning” path continues.

This improves predictability for joins, forks, and cyclic graphs, while giving you fine-grained control over how each activity merges incoming paths.

How to opt in (Program.cs)

Token-based Flowchart execution is opt-in. Enable it via the Flowchart feature configuration:

elsa.UseFlowchart(flowchart => flowchart.UseTokenBasedExecution())

---

Breaking / Upgrading Notes

These are the changes most likely to affect upgrades from 3.5.x.

1) Multi-targeting: .NET 8, .NET 9, and .NET 10

Elsa 3.6.0 multi-targets .NET 8, .NET 9, and .NET 10.

• Most consumers can continue targeting .NET 8 or .NET 9.
• If you build Elsa from source (or run CI against the full repo), ensure your build agents have a .NET 10 SDK available. (PR: Upgrade projects to target .NET 10, add conditional System.Linq.Async dependencies for compatibility with earlier frameworks, and update project files for consistency across the solution. #7062)

2) Package / project renames

Some projects / packages have been renamed. Make sure to update your package references accordingly.

In most cases, this also impacted the root namespace of these packages, so update using statements and fully-qualified type names as needed.

Migration tips

• Start by updating NuGet references (e.g., in .csproj, Directory.Packages.props, Directory.Build.props).
• Then update namespaces/usages:
  • A simple approach is a solution-wide search/replace for the old root namespaces (e.g. Elsa.EntityFrameworkCore → Elsa.Persistence.EFCore).
  • If you have global usings, update those too.
• If you use central package management, ensure only the new package IDs remain (to avoid restore conflicts).

Optional commands (adjust paths as needed):

# If you want a quick way to find old package IDs/usings in your codebase:
rg "Elsa\\.(EntityFrameworkCore|Dapper|MongoDb|Elasticsearch|Webhooks|CSharp|Dsl|JavaScript|Liquid|Python|Kafka|MassTransit|FileStorage|Hangfire|Quartz)" -S

# Restore/build after updates:
dotnet restore --ignore-failed-sources
DOTNET_CLI_TELEMETRY_OPTOUT=1 dotnet build

Old	New	Repo	Notes
Elsa.EntityFrameworkCore.*	Elsa.Persistence.EFCore.*	elsa-core
Elsa.Dapper	Elsa.Persistence.Dapper	elsa-extensions
Elsa.MongoDb	Elsa.Persistence.MongoDb	elsa-extensions
Elsa.Elasticsearch	Elsa.Persistence.Elasticsearch	elsa-extensions
Elsa.Webhooks	Elsa.Http.Webhooks	elsa-extensions
Elsa.CSharp	Elsa.Expressions.CSharp	elsa-core
Elsa.Dsl	Elsa.Dsl.ElsaScript	elsa-core	Complete replacement
Elsa.JavaScript	Elsa.Expressions.JavaScript	elsa-core
Elsa.JavaScript.Libraries	Elsa.Expressions.JavaScript.Libraries	elsa-core
Elsa.Liquid	Elsa.Expressions.Liquid	elsa-core
Elsa.Python	Elsa.Expressions.Python	elsa-core
Elsa.Kafka	Elsa.ServiceBus.Kafka	elsa-extensions
Elsa.MassTransit.*	Elsa.ServiceBus.MassTransit.*	elsa-extensions
Elsa.FileStorage	Elsa.Storage.FileStorage	elsa-extensions
Elsa.Hangfire	Elsa.Scheduling.Hangfire	elsa-extensions
Elsa.Quartz.*	Elsa.Scheduling.Quartz.*	elsa-extensions

3) Modules moved out of Core

• SQL activities removed from Core. If you used SQL activities, reference the appropriate extension package(s) instead of relying on core-only dependencies. (PR: Removes Sql Activities From Core #6625)
• IO module moved to Extensions. If you depended on IO activities/types from core, update references to the new extension location. (PR: Removing IO module (moved to Extensions) #6835)
• Persistence and integration packages renamed. If you referenced these packages previously, update your package references accordingly:
  • Elsa.Dapper → Elsa.Persistence.Dapper
  • Elsa.MongoDb → Elsa.Persistence.MongoDb
  • Elsa.Elasticsearch → Elsa.Persistence.Elasticsearch
  • Elsa.Webhooks → Elsa.Http.Webhooks
  • Elsa.Kafka → Elsa.ServiceBus.Kafka
  • Elsa.MassTransit.* → Elsa.ServiceBus.MassTransit.*
  • Elsa.FileStorage → Elsa.Storage.FileStorage
  • Elsa.Hangfire → Elsa.Scheduling.Hangfire
  • Elsa.Quartz.* → Elsa.Scheduling.Quartz.*

4) Persistence & database migrations

• Database extensions were refactored and migration support for v3.6 was added. Review persistence configuration and apply migrations where applicable. (PRs: Refactor database extensions and support migrations for V3.6 #6788, Restore EF Core persistence layer #6931)

5) Flowchart execution semantics

• The token-centric Flowchart model and merge-mode changes can affect execution semantics in complex graphs (especially joins/loops/cycles). Re-test those workflows after upgrading. See Flowchart: token-based execution + per-activity MergeMode. (PRs: Introduce token-centric Flowchart execution model with configurable MergeMode #6632, Refactor flowchart token handling and enhance merge mode behavior #6937, Refactors and clarifies Flowchart merge modes #6993, Configures Flowchart Execution via DI #7141)

---

Recommended verification checklist

After upgrading, we recommend validating the following areas:

• Flowcharts using joins, loops, and cyclic graphs (FlowJoin/WaitAny, merge modes). (Fix unexpected FlowJoin(WaitAny) behavior in cyclic flow. #6592, Introduce token-centric Flowchart execution model with configurable MergeMode #6632, Refactor flowchart token handling and enhance merge mode behavior #6937, Fix Switch activity behavior and add testing utilities for RunWorkflowResult and improve #7151)
• Scheduling & cron triggers, especially fast schedules / edge cases. (Create trigger payload validation, refacto HttpEndpoint validator and create Cron validator #6641, Fix cron triggers silently stopping when delay calculation returns zero #7047, Fix semaphore release logic in scheduled task execution #7045)
• Multi-engine environments for trigger registration correctness (no duplicates). (Fix Race Condition Causing Duplicate Trigger Registration in Multi-Engine Environments + Add Concurrency Tests to Prevent Regression #7131)
• HTTP activities: Content-Type/charset handling and Content-Length correctness; file upload/download scenarios. (Fix Content-Type header charset auto-appending in HTTP requests #6676, Fix Content-Length mismatch by reworking RawStringContent #7027, Add unit and integration tests for DownloadHttpFile activity #7094, Http endpoint unit, integration and component tests #7125)
• Persistence: migration path and EF Core provider configuration in your target environment. (Refactor database extensions and support migrations for V3.6 #6788, Restore EF Core persistence layer #6931)

---

What’s Changed

Flowchart & core execution

• Fix unexpected FlowJoin(WaitAny) behavior in cyclic flow. (PR: Fix unexpected FlowJoin(WaitAny) behavior in cyclic flow. #6592)
• Introduce token-centric Flowchart execution model with configurable MergeMode. (PR: Introduce token-centric Flowchart execution model with configurable MergeMode #6632)
• Refactor flowchart token handling and enhance merge mode behavior. (PR: Refactor flowchart token handling and enhance merge mode behavior #6937)
• Refactors and clarifies Flowchart merge modes. (PR: Refactors and clarifies Flowchart merge modes #6993)
• Configures Flowchart Execution via DI. (PR: Configures Flowchart Execution via DI #7141)
• Fix Switch activity behavior and improve testing utilities. (PR: Fix Switch activity behavior and add testing utilities for RunWorkflowResult and improve #7151)
• Improves Fork activity and break signal handling. (PR: Improves Fork activity and break signal handling #7104)
• Add missing Pending state to ActivityStatus enum. (PR: Add missing Pending state to ActivityStatus enum #6856)

Workflow composition, scripting & developer hooks

• Add optional workflow output flag. (PR: Add optional workflow output flag #6659)
• Add ActivityCompleted notification for workflow activity completion. (PR: Add ActivityCompleted notification for workflow activity completion #6675)
• Fix Liquid expressions not working in sub-workflows (workflow-as-activity). (PR: Fix Liquid expressions not working in sub-workflows (workflow-as-activity) #6678)
• Allow C# Script to use dot notation with ExpandoObject (JSON variables). (PR: Allow C# Script to use dot notation with ExpandoObject (JSON variables) #6689)
• Search for workflow-as-activities based on DefinitionId (not only VersionId). (PR: Added logic to search for workflow-as-activities based on DefinitionId (not only versionId) #7149)
• Add Elsa Script DSL. (PR: Add Elsa Script DSL #7076)
• Add bus configurator hook to MassTransitFeature. (PR: Add bus configurator hook to MassTransitFeature #6658)
• Workflow input as activity input. (PR: Workflow input as activity input #6910)

HTTP, endpoints & content handling

• Fix Content-Type header charset auto-appending in HTTP requests. (PR: Fix Content-Type header charset auto-appending in HTTP requests #6676)
• Fix Content-Length mismatch by reworking RawStringContent. (PR: Fix Content-Length mismatch by reworking RawStringContent #7027)
• Update RawStringContent encoding in JsonContentFactory. (PR: Update RawStringContent encoding in JsonContentFactory #6786)
• Fix wrong strategy selection for some string content. (PR: Fixing wrong strategy selection for some string content #6777)
• Expose the first uploaded file. (PR: Exposes the first uploaded file #7010)
• Better base64 evaluation + appropriate zip entry naming. (PR: Implementing better base64 evaluation + appropriate zip entry naming #6783)
• Fix wrong naming in resulting entries when file is input from HTTP. (PR: Fixed wrong naming in resulting entries when file is inputted from http #6806)
• Unit & integration tests for DownloadHttpFile. (PR: Add unit and integration tests for DownloadHttpFile activity #7094)
• HTTP endpoint unit, integration and component tests. (PR: Http endpoint unit, integration and component tests #7125)

Triggers, scheduling & concurrency

• Trigger payload validation; refactor HttpEndpoint validator; add Cron validator. (PR: Create trigger payload validation, refacto HttpEndpoint validator and create Cron validator #6641)
• Fix cron triggers silently stopping when delay calculation returns zero. (PR: Fix cron triggers silently stopping when delay calculation returns zero #7047)
• Fix semaphore release logic in scheduled task execution. (PR: Fix semaphore release logic in scheduled task execution #7045)
• Fix race condition causing duplicate trigger registration in multi-engine environments + add concurrency regression tests. (PR: Fix Race Condition Causing Duplicate Trigger Registration in Multi-Engine Environments + Add Concurrency Tests to Prevent Regression #7131)
• Extensive unit and component tests for scheduling activities. (PR: Add extensive unit and component tests for scheduling activities #7036)

Persistence, database & migrations

• Refactor database extensions and support migrations for v3.6. (PR: Refactor database extensions and support migrations for V3.6 #6788)

Serialization, conversion & correctness

• Add FuncExpressionValueConverter for JSON serialization. (PR: Add FuncExpressionValueConverter for JSON serialization #6607)
• Introduce activity execution record capturing and serialization improvements. (PR: Introduce activity execution record capturing and serialization improvements #6800)
• Refactor activity execution record serialization with snapshots. (PR: Refactor activity execution record serialization with snapshots #6807)
• Add IEnumerableTypeConverter. (PR: Added IEnumerableTypeConverter #7020)
• Add IAsyncEnumerable check to GetItemSource. (PR: Add IAsyncEnumerable check to ItemSourceActivityExecutionContextExtensions.GetItemSource #6897)
• Parse VariableTestValues more robustly (ExpandoObject + type conversion). (PR: Parse VariableTestValues more robustly, leveraging ExpandoObject and type conversion logic. #6883)
• Use FullName in WorkflowDictionary. (PR: Use FullName in WorkflowDictionary #6923)
• Add ILoggerFactory support to converters. (PR: Adds ILoggerFactory support to converters #7153)
• Fix missing DefaultValue for OuterBoundInclusive in For activity. (PR: Fix missing DefaultValue for OuterBoundInclusive property in For activity #6680)

Platform / dependencies / repo organization

• Upgrade projects to target .NET 10; update project files for consistency; add conditional compatibility dependencies. (PR: Upgrade projects to target .NET 10, add conditional System.Linq.Async dependencies for compatibility with earlier frameworks, and update project files for consistency across the solution. #7062)
• Update Jint to 4.3.0. (PR: Update Jint to 4.3.0 #6794)
• Enhanced SasTokensFeature to support sharing protected keys via shared drive, Redis cache, and other mechanisms. (PR: Enhanced SasTokensFeature to support sharing protected keys via shared drive, Redis cache, and other mechanisms #6665)
• Realign Core and Extension repos. (PR: Realign Core and Extension Repos. #6664)
• Add back SasToken project. (PR: Add back SasToken project. #6673)
• Remove SQL activities from Core. (PR: Removes Sql Activities From Core #6625)
• Remove IO module from Core (moved to Extensions). (PR: Removing IO module (moved to Extensions) #6835)
• Enhance thread safety with ConcurrentDictionary usage. (PR: Enhance thread safety with ConcurrentDictionary usage #6760)
• Downgrade JetBrains.Annotations to fix package builds. (PR: Downgrading JetBrains.Annotations for fixing the packages build #6848)

Runtime stability / cleanup

• Fix FileSystemWatcher cleanup. (PR: Fix FileSystemWatcher cleanup #6657)
• Fix ASP.NET integration test crashes by adding proper Elsa background task shutdown. (PR: Fix ASP.NET integration test crashes by adding proper Elsa background task shutdown #6686)
• Fix EventBase child activity not executing OnEventReceived. (PR: Fix EventBase child activity not executing OnEventReceived method #6687)
• Fix ParentWorkflowInstanceId not being set. (PR: Fixed ParentWorkflowInstanceId not being set #7029)

UI / Studio / Designer

• View suspended workflow in studio fix. (PR: View suspended workflow in studio fix #6646)
• New UI hint: RadioList (API models + UI components + related refactors). (PRs: Create Api Client Models for RadioList UIHint. #6711, Add RadioList support and related UI components #6712, Refactor checklists and radio lists to use records #6713, Revert ChecklistItem back from Record to Class #6714)
• Generic activity name fix. (PR: Generic activity name fix #6698)
• Refactor ActivityRegistry to populate all activities in workflow edit. (PR: Refactor ActivityRegistry to populate all activities in workflow edit #6605)
• Fix: allow loading all descriptors in the UI. (PR: fix: code fixed to allow loading all the descriptors in the UI #6648)

Testing (major coverage expansion)

This release includes a large number of new tests across most core activities. Some representative additions:

• Implement Activity Testing API. (PR: Implement Activity Testing API #6719)
• Coverage enforcement for test projects. (PR: Add coverage enforcement for test projects #6950)
• Code coverage configuration and test project adjustments. (PR: Add code coverage configuration and adjust test projects #7049)
• Integration tests for Flowchart. (PR: Adds integration tests for Flowchart #6991)
• Integration tests for RunJavaScript + introduce WorkflowTestFixture. (PR: Add integration tests for RunJavaScript activity and introduce WorkflowTestFixture #7002)
• Integration tests for WorkflowDefinitionActivity scenarios. (PR: Add integration tests for WorkflowDefinitionActivity scenarios #6999)
• ExecuteWorkflow activity tests. (PR: Adds ExecuteWorkflow activity tests #7003)
• BulkDispatchWorkflows tests and improved activity coverage. (PR: Add BulkDispatchWorkflows tests and improve activity coverage #7026)
• DispatchWorkflow tests with new workflow definitions. (PR: Add DispatchWorkflow tests with new workflow definitions #7035)
• Integration tests for core activities. (PR: Adds integration tests for core activities #7100)
• Many more unit & integration tests across core activities such as Container, Sequence, Start/End/Complete/Finish/Fault, ParallelForEach, Correlate, EventBase, Publish Event, and multiple flow activities. (Multiple PRs including: Adds SetVariable activity unit tests #6989, Add unit tests for FlowFork activity and enhance test utilities #6995–Add unit tests for FlowSendHttpRequest activity and refactor helper utilities #6997, Unit tests for For activity #7001, Unit testing coverage for While activity #7004, Unit test coverage Write Http Response #7005, Add unit tests for StartAt activity, enhance ActivityTestFixture, and update dependencies #7007, Add unit and integration tests for SetOutput activity #7008, Feat/unit test coverage writefilehttpresponse #7016, Unit test coverage Flow Join activity #7031, Adds unit tests for EventBase activity #7090, Adds Publish Event Activity Tests #7093, Add unit and integration tests for Container activity, covering behavior such as variable scoping, child activity execution, and mixed variable types. #7102, Move Sequence activity tests to a dedicated namespace and add new unit and integration tests for enhanced coverage. #7103, Add unit and integration tests for Complete activity to validate composite workflows execution #7108–Add unit and integration tests for FlowDecision activity to validate branching and nested workflow logic #7117, Add unit tests for Correlate activity and enhance ActivityTestFixture execution functionality #7119–Add unit and integration tests for ParallelForEach activity covering behavior with different item types, fault handling, and scenario-specific conditions #7120, Add unit tests for ReadLine activity (#7110) #7112)

Misc / docs / polish

• Update CommonTypesDefinitionProvider.cs. (PR: Update CommonTypesDefinitionProvider.cs #6615)
• Fix typo in README section title. (PR: Fix typo in README.md section title #6629)
• Fix spelling in hosted service LogError messages. (PR: Fix spelling in hosted service LogError messages #6654)
• Fix duplicate words in XML comments. (PR: Fix duplicate words in XML comments #6655)

---

New Contributors

Thanks to our new contributors:

• @Nordran (PR: Fix unexpected FlowJoin(WaitAny) behavior in cyclic flow. #6592)
• @mhichb (PR: Update CommonTypesDefinitionProvider.cs #6615)
• @MaxBrooks114 (PR: Add FuncExpressionValueConverter for JSON serialization #6607)
• @LaamiriOuail (PR: Fix typo in README.md section title #6629)
• @zengande (PR: Update ListWorkflowDefinitionsRequest.cs #6761)
• @FuJa0815 (PR: Add IAsyncEnumerable check to ItemSourceActivityExecutionContextExtensions.GetItemSource #6897)
• @mberthillot-flowwa (PR: Workflow input as activity input #6910)
• @crashkonijn (PR: Fixed ParentWorkflowInstanceId not being set #7029)
• @j03y-nxxbz (PR: Added logic to search for workflow-as-activities based on DefinitionId (not only versionId) #7149)
• @Jelger-Quadira (PR: Add nameprovider for workflow-instances export files #7146)

---

Full Changelog

• Compare view: 3.5.2...3.6.0-rc1

---

This discussion was created from the release 3.6.0 RC1.

[hitenvaja96]

After updating, I am facing issue that none of built-in or my custom activities are being registered. I have checked using below code:

var _activityRegistry = _serviceProvider.GetRequiredService();
var descriptors = _activityRegistry.ListAll();
var activityNames = descriptors.Select(d => new
{
d.TypeName,
d.Name,
d.DisplayName,
d.Category
});

The result is always 0

[hitenvaja96]

I found the solution, migration was no ran on DB that's why faced it.

So there is two root trigger followed by different activity, RecordCreated is triggered it's followed activity executed gracefully
In same definition there is RecordUpdated trigger as root when it is triggered there is one activity CreateChildTask which is executed successfully and after it there is another RecordUpdated in which case bookmark is created but when this bookmark is executed activity is resumed facing error as mentioned below

Could you help me in one thing facing below error in one of my case, let me share json also

JSON:
{"id":"2a5b839f9ee72c29","name":"Flowchart1","type":"Elsa.Flowchart","version":1,"customProperties":{"notFoundConnections":[],"canStartWorkflow":false,"runAsynchronously":false},"metadata":{},"activities":[{"entityTypeId":{"typeName":"Int16","expression":{"type":"Literal","value":5}},"taskTypeId":{"typeName":"Int32","expression":{"type":"Literal","value":0}},"entityId":null,"isImmediateTrigger":{"typeName":"Boolean","expression":{"type":"Literal","value":true}},"result":{"typeName":"Knovos.Manage.Workflow.Core.Entities.DTOs.InternalAccess.Elsa.AbstarctTriggerResultDTO, Knovos.Manage.Workflow.Core","memoryReference":{"id":"RootTriggerResult"}},"id":"RecordCreated","nodeId":null,"name":"RecordCreated","type":"Knovos.Manage.Workflow.Core.Elsa.Triggers.RecordCreated","version":1,"customProperties":{"canStartWorkflow":true,"runAsynchronously":false},"metadata":{}},{"inputJson":{"typeName":"String","expression":{"type":"JavaScript","value":"JSON.stringify({Metadata:{},EntityId:0,EntityTypeId:5,ParentTaskId:getVariable(\u0027RootTrigger\u0027).EntityId,ChildTaskTypeId:58})"}},"conditionJson":null,"result":{"typeName":"Knovos.Manage.Workflow.Core.Entities.DTOs.InternalAccess.Elsa.ChildTaskDTO, Knovos.Manage.Workflow.Core","memoryReference":{"id":"CreateChildTask1Result"}},"id":"CreateChildTask1","nodeId":null,"name":"CreateChildTask1","type":"Knovos.Manage.Workflow.Core.Elsa.Activities.CreateChildTask","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{}},{"fieldId":{"typeName":"String","expression":{"type":"Literal","value":""}},"entityTypeId":{"typeName":"Int16","expression":{"type":"Literal","value":5}},"taskTypeId":{"typeName":"Int32","expression":{"type":"Literal","value":0}},"entityId":null,"isImmediateTrigger":{"typeName":"Boolean","expression":{"type":"Literal","value":true}},"result":{"typeName":"Knovos.Manage.Workflow.Core.Entities.DTOs.InternalAccess.Elsa.AbstarctTriggerResultDTO, Knovos.Manage.Workflow.Core","memoryReference":{"id":"RootTriggerResult"}},"id":"0e23e762-b46d-4a35-8917-374657223b5d","nodeId":null,"name":"RecordUpdated","type":"Knovos.Manage.Workflow.Core.Elsa.Triggers.RecordUpdated","version":1,"customProperties":{"canStartWorkflow":true,"runAsynchronously":false},"metadata":{}},{"inputJson":{"typeName":"String","expression":{"type":"JavaScript","value":"JSON.stringify({Metadata:{},EntityId:0,EntityTypeId:5,ParentTaskId:getVariable(\u0027RootTrigger\u0027).EntityId,ChildTaskTypeId:58})"}},"conditionJson":null,"result":{"typeName":"Knovos.Manage.Workflow.Core.Entities.DTOs.InternalAccess.Elsa.ChildTaskDTO, Knovos.Manage.Workflow.Core","memoryReference":{"id":"CreateChildTask2Result"}},"id":"12517427-8a9c-4482-b45a-4b3eebcbc67c","nodeId":null,"name":"CreateChildTask2","type":"Knovos.Manage.Workflow.Core.Elsa.Activities.CreateChildTask","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{}},{"fieldId":{"typeName":"String","expression":{"type":"Literal","value":""}},"entityTypeId":{"typeName":"Int16","expression":{"type":"Literal","value":5}},"taskTypeId":{"typeName":"Int32","expression":{"type":"Literal","value":58}},"entityId":{"typeName":"Int32","expression":{"type":"JavaScript","value":"getVariable(\u0027CreateChildTask2\u0027).EntityId"}},"isImmediateTrigger":{"typeName":"Boolean","expression":{"type":"Literal","value":false}},"result":null,"id":"167ce9d8-932b-4ab2-ab06-a060559824e1","nodeId":null,"name":"RecordUpdated","type":"Knovos.Manage.Workflow.Core.Elsa.Triggers.RecordUpdated","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{}},{"inputJson":{"typeName":"String","expression":{"type":"JavaScript","value":"JSON.stringify({Metadata:{},EntityId:0,EntityTypeId:5,ParentTaskId:getVariable(\u0027CreateChildTask2\u0027).EntityId,ChildTaskTypeId:87})"}},"conditionJson":null,"result":{"typeName":"Knovos.Manage.Workflow.Core.Entities.DTOs.InternalAccess.Elsa.ChildTaskDTO, Knovos.Manage.Workflow.Core","memoryReference":{"id":"CreateChildTask3Result"}},"id":"b92ad0c1-936d-4e72-8f36-c14833e59653","nodeId":null,"name":"CreateChildTask3","type":"Knovos.Manage.Workflow.Core.Elsa.Activities.CreateChildTask","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{}}],"variables":[],"connections":[{"source":{"activity":"RecordCreated"},"target":{"activity":"CreateChildTask1"},"vertices":[]},{"source":{"activity":"0e23e762-b46d-4a35-8917-374657223b5d"},"target":{"activity":"12517427-8a9c-4482-b45a-4b3eebcbc67c"},"vertices":[]},{"source":{"activity":"12517427-8a9c-4482-b45a-4b3eebcbc67c"},"target":{"activity":"167ce9d8-932b-4ab2-ab06-a060559824e1"},"vertices":[]},{"source":{"activity":"167ce9d8-932b-4ab2-ab06-a060559824e1"},"target":{"activity":"b92ad0c1-936d-4e72-8f36-c14833e59653"},"vertices":[]}]}

Error: Activity 167ce9d8-932b-4ab2-ab06-a060559824e1 is not reachable from the flowchart graph. Unable to schedule it\u0027s outbound activities.
"{"type":"System.Exception, System.Private.CoreLib","message":"Activity 167ce9d8-932b-4ab2-ab06-a060559824e1 is not reachable from the flowchart graph. Unable to schedule it\u0027s outbound activities.","stackTrace":" at Elsa.Workflows.Activities.Flowchart.Activities.Flowchart.MaybeScheduleOutboundActivitiesAsync(FlowGraph flowGraph, FlowScope flowScope, ActivityExecutionContext flowchartContext, IActivity activity, Outcomes outcomes, ActivityCompletionCallback completionCallback, Boolean completedActivityExecutedByBackwardConnection)\r\n at Elsa.Workflows.Activities.Flowchart.Activities.Flowchart.ProcessChildCompletedAsync(ActivityExecutionContext flowchartContext, IActivity completedActivity, ActivityExecutionContext completedActivityContext, Outcomes outcomes)\r\n at Elsa.Workflows.Activities.Flowchart.Activities.Flowchart.OnChildCompletedCounterBasedLogicAsync(ActivityCompletedContext context)\r\n at Elsa.Workflows.Behaviors.ScheduledChildCallbackBehavior.OnActivityCompletedAsync(ActivityCompleted signal, SignalContext context)\r\n at Elsa.Workflows.Behavior.Elsa.Workflows.ISignalHandler.ReceiveSignalAsync(Object signal, SignalContext context)\r\n at Elsa.Workflows.Activity.Elsa.Workflows.ISignalHandler.ReceiveSignalAsync(Object signal, SignalContext context)\r\n at Elsa.Extensions.ActivityExecutionContextExtensions.SendSignalAsync(ActivityExecutionContext activityExecutionContext, Object signal)\r\n at Elsa.Workflows.ActivityExecutionContext.CompleteActivityAsync(Object result)\r\n at Knovos.Manage.Workflow.Core.Elsa.Triggers.AbstractTrigger\u00602.OnResumeAsync(ActivityExecutionContext ctx) in D:\Projects\Live\GIT\KnovosManage\Knovos.Manage.Workflow.Core\Elsa\Triggers\AbstractTrigger.cs:line 98\r\n at Elsa.Workflows.Middleware.Activities.DefaultActivityInvokerMiddleware.ExecuteActivityAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Runtime.Middleware.Activities.BackgroundActivityInvokerMiddleware.ExecuteActivityAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Middleware.Activities.DefaultActivityInvokerMiddleware.InvokeAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Runtime.Middleware.EvaluateLogPersistenceModesMiddleware.InvokeAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Middleware.Activities.NotificationPublishingMiddleware.InvokeAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Middleware.Activities.ExecutionLogMiddleware.InvokeAsync(ActivityExecutionContext context)\r\n at Elsa.Workflows.Middleware.Activities.ExceptionHandlingMiddleware.InvokeAsync(ActivityExecutionContext context)","_type":"Elsa.Workflows.State.ExceptionState, Elsa.Workflows.Core"}"

[sfmskywalker]

Hmm.. Although the error is clear, it's unclear how your workflow instance would get into that state. It could be a bug, but in order to solve it, we need steps to reproduce this on a dev machine. Do you have steps to reproduce this issue on a clean slate database?

[hitenvaja96]

The issue is occured when there is parallel triggers configured with canStartWorkflow: true, in that case issue is happens. You can refer my JSON to reproduce same in your dev environment. Also what details you need to reproduce and provide solution just let me know so I can provide more details. I am using library eagerly as I want to deliver it into my production but this problem is bottleneck for my usecase.

Just tell me what details you need, I can create this issue on clean slate DB also.

[sfmskywalker]

That’s good that you can reproduce it on a clean slate. However I cannot use your JSON, as it references custom activities. Obviously, I don’t have your activities.

What I need is this:

• A minimal sample project
• A sample workflow (JSON) that can be imported into the sample project.
• Step by step instructions that I can perform in my dev machine to see the issue that you described.

[hitenvaja96]

Hello,

I have created minimal project for clean slate operation
PFA zip of the project along with reproducing steps

Step1 : Save Definition with below attached "Definition.json" file

Definition.json

Step 2: Swagger -> MyWorkflowController -> Trigger Endpoint -> Send request with below payload

{
"triggerName": "RecordUpdated",
"entityTypeId": 5,
"taskTypeId": 0,
"entityId": 0,
"fields": [],
"statusId": 0
}

Step 3: Swagger -> MyWorkflowController -> Trigger Endpoint -> Send request with below payload

{
"triggerName": "RecordUpdated",
"entityTypeId": 5,
"taskTypeId": 65,
"entityId": 1,
"fields": [],
"statusId": 0
}

After performing above steps you will find that error is reproduced, for the instance which should be resumed.

ElsaCleanSlate.zip