* fix: Add session support for Handoff-hosted Agents
In order to better support using `Workflows` hosted as `AIAgents` inside of Handoff workflows, we need to make proper use of AgentSession. This causes potential issues around checkpointing and making sure that we properly compute only the new incoming messages for each agent invocation.
* fix: AgentSession checkpointing using AIAgent's Serialize/Deserialize methods
We cannot rely on implicit serialization through `HandoffHostState` because we are missing type information.
* fix: Thread safety issue in `MultiPartyConversation.AllMessages`
* fix: Enable unwrapping of FunctionResultContent when ExternalRequest was wrapped into FunctionCallContent
* Fix RequestInfoEvent lost when resuming workflow from checkpoint
* Fix streaming run double disposal in tests and lockstep republishing before Started event is emitted.
* Fix bug to remove messages after sending to avoid losing messages on send failure.
* Fix declarative test harness
* fix: HandoffAgentExecutor does not output any reponse when non-streaming
* fix: Ensure Workflow outputs persisted in chat history when hosted AsAgent
* fix: Remove duplicate history entry creation and ad test
* test: Add streaming tests for AsAgent to smoke tests
* feat: Add output configurability to Handoffs
* Handle external input request and response conversion for workflow as agent scenario
* Remove unnecessary test comment
* Fix PR comments
* Updated to fix edge cases, and add more tests.
* Update pending requests to use typed properties instead of relying on StateBag. replying to PR feedback.
* Fixed external response de-dup and updated possible brittle test.
* Address PR comments on sending turn token for normal messages and handle contentId collision by source agent
* Remove unnecessary serialization element and address pr comment on intercepted outgoing requests
* Updated MEAI changes for UserInput request and response abstractions.
* refactor: Normalize Run/RunStreaming with AIAgent
* refactor: Clarify Session vs. Run -level concepts
* Rename RunId to SessionId to better match Run/Session terminology in AIAgent
* [BREAKING]: Will break existing checkpointed sessions in CosmosDb due to field rename
* refactor: Rename and simplify interface around getting typed data out of ExternalRequest/Response
* Also adds hints around using value types in PortableValue
* refactor: Rename AddFanInEdge to AddFanInBarrierEdge
This will prevent a breaking change later when we introduce a programmable FanIn edge, analogous to the FanOut edge's EdgeSelector.
The goal, in the long run is to support a number of different FanIn scenarios, with naive FanIn (no barrier) by default, similar to FanOut.
* refactor: AsAgent(this Workflow, ...) => AsAIAgent(...)
* misc - part1: SwitchBuilder internal
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Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>
* [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
* .NET: [BREAKING] Add session statebag to use for state storage instead of inside providers (#3737)
* Add a StateBag to AgentSession and pass Agent and AgentSession to AIContextProvider and ChatHistoryProviders
* Convert all AIContextProviders to use the statebag
* Update InMemoryChatHistoryProvider to use StateBag
* Update Comsos and Workflow ChatHistoryProviders
* Update 3rd party chat history storage sample.
* Remove serialize method from providers
* Replacing provider factories with properties
* Remove Providers from Session and flatten state bag serialization
* Update samples to use getservice on agent
* Updated additional session types to serialize statebag
* Fix regression
* Address PR comments
* Address PR comments.
* Fix formatting
* Fix unit tests
* Remove InMemoryAgentSession since it is not required anymore.
* Address PR comments
* Convert sessions for A2AAgent, ChatClientAgent, CopilotStudioAgent and GithubCopilotAgent to use regular json serialization.
* Fix durable agent session jso usgae
* Add jso to InMemory and Workflow ChatHistoryProviders
* Update InMemoryChatHistoryProvider to use an options class for it's many optional settings.
* Apply suggestions from code review
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Address PR feedback
* Fix verification bug.
* Improve state bag thread safety
* Address PR comments and fix unit tests
* Address PR comments
* Fix unit test
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Add a public StateKey property to providers (#3810)
* .NET: [BREAKING] Update providers in such a way that they can participate in a pipeline (#3846)
* Make providers pipeline capable
* Fix unit tests
* Move source stamping to providers from base class
* Also update samples.
* Address PR comments
* Rename AsAgentRequestMessageSourcedMessage to WithAgentRequestMessageSource
* .NET: [BREAKING] Add consistent message filtering to all providers. (#3851)
* Add consistent message filtering to all providers.
* Remove old chat history filtering classes
* Fix merge issues
* Fix unit test
* Enforce non-nullable property
* Fix merging bug and make troubleshooting source info easier by adding tostring implementation
* .NET: [BREAKING] Add support for multiple AIContextProviders on a ChatClientAgent (#3863)
* Add support for multiple AIContextProviders on a ChatClientAgent
* Address PR comments and fix tests
* Address PR comments.
* .NET: [BREAKING]Delay AIContext Materialization until the end of the pipeline is reached. (#3883)
* Delay AIContext Materialization until the end of the pipeline is reached.
* Address PR comments.
* Address PR comments
* Modify InvokedContext to be immutable (#3888)
* .NET: Address Feedback on StateBag feature branch PR (#3910)
* Address Feedback on statebag feature branch PR
* Update dotnet/src/Microsoft.Agents.AI.DurableTask/CHANGELOG.md
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Address PR comments
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Move AgentSession.Serialize to AIAgent
* Address PR comments.
* Improve code and fix unit test
* Update test agents to return a default json element instead of throwing where the the result of the serialization is never used.
* Update further tests to actually serialize the session
Jacob AlberandGitHub
Peter IbekweandGitHub
