* Add Kafka module with integration and example setup
Introduced the Kafka module providing consumer integration and activities into the project. This includes new classes for consumer handling, configuration, and activities. An example setup using Docker Compose is also added to facilitate development and testing.
* Refactor KafkaTransportMessage to inline Timestamp namespace
Simplify the namespace usage for the Timestamp type within the KafkaTransportMessage record. This change eliminates the need for a separate using directive for Timestamp, enhancing code readability and maintainability.
* Add support for handling Kafka transport messages
This commit introduces the capability to handle and trigger workflows based on Kafka transport messages. It adds a new handler, notifications, and updates the message stimulus to include correlating fields. Additionally, the Kafka consumers are now managed more modularly with updated startup tasks and mediator integration.
* Enable Kafka integration and fix Kafka options naming
Added support for Kafka integration in Elsa.Server.Web by setting up Kafka configurations in appsettings.json and updating Program.cs. Also, renamed `ConsumerConfigs` to `ConsumerDefinitions` in Kafka options for clarity.
* Add consumer definition enumeration and dropdown support
Introduced `IConsumerDefinitionEnumerator` for managing consumer definitions across providers and implemented in `ConsumerDefinitionEnumerator` class. Enhanced `KafkaFeature` to register these services and updated the `MessageReceived` activity to use a dropdown UI hint for consuming definitions. Improved `StartConsumersTask` by refactoring consumer definition retrieval logic.
* Add SendMessage activity and refine Kafka messaging
Introduce a new SendMessage activity for Kafka, enabling message publishing to specific topics. Refine KafkaTransportMessage model by removing headers and timestamp fields. Adjust the StimulusSender logic to streamline the bookmark queuing process and fix key-value pairing in dropdown options. Update appsettings for corrected Kafka bootstrap server and topic configurations.
* Add producer and topic management support
Introduced interfaces and implementations for managing producer and topic definitions along with their respective enumerators and list providers. Updated `SendMessage` activity to include producer selection and refactored consumer definition providers for better consistency.
* Refactor Kafka configuration property names
Renamed Kafka configuration properties for better consistency and readability across the codebase. Updated property names from `ProducerDefinitions` to `Producers`, `ConsumerDefinitions` to `Consumers`, and `TopicDefinitions` to `Topics`. Added missing input attribute in `SendMessage.cs` and registered additional handlers in `KafkaFeature.cs`.
* Add custom serializers for Kafka message handling
Introduced `DefaultSerializers` class for custom serialization and deserialization of Kafka messages. Updated `MessageReceived` and `SendMessage` activities to use these custom serializers, and modified `KafkaOptions` to include them.
* Fix ExpandoObject serialization method parameter
Changed the serialization type from `ExpandoObject` to the actual type of the object to ensure proper serialization. This ensures that derived types are correctly handled during the serialization process.
* Add Producer and Consumer workflows for Kafka
Introduced two new workflows: `ProducerWorkflow` and `ConsumerWorkflow` for handling Kafka messages. Updated `DefaultSerializers` to use camelCase property naming and modified `appsettings.json` to include `topic-2` and format entries.
* Add JSON serialization to log output in ConsumerWorkflow
This change enhances the log output by serializing messages to JSON format before writing them. The addition of System.Text.Json ensures that the message content is presented in a structured and standardized format in logs.
* Add correlation strategies and update Kafka features
Implemented HeaderCorrelationStrategy and NullCorrelationStrategy, and updated KafkaFeature to support customizable correlation strategies. Added correlation ID handling to Kafka transport messages and updated config and handlers accordingly.
* Add tenant accessor to ConsumerDefinitionWorkflowContextProvider
Integrated ITenantAccessor to the provider to support tenant-specific context loading. Updated the constructor and LoadAsync method to retrieve the tenant information and use it for context-specific operations.
* Switch to MySQL and disable Kafka
This commit changes the SQL database provider from SQLite to MySQL and disables Kafka use. It also includes necessary adjustments such as adding MySQL handling in configuration and connection setups, updating `docker-compose` to include MySQL services, and referencing MySQL projects in the `.csproj` file.
* Add UI property handlers to multiple features
This commit introduces various UI property handlers across several features such as Python, JavaScript, CSharp, and Workflow features to enhance user interface property handling. It also updates the property UI handler resolution logic to better manage cases where providers are not available. Furthermore, adjustments were made in the server configuration to switch database providers and enable Kafka.
* Refactor property UI handler retrieval logic
Modified the logic to fetch property UI handlers by preloading them into a list and then filtering. This change improves readability and potentially performance by reducing repetitive service provider calls.
* Incremental work on Kafka workers and predicate evaluation
* Merge BookmarkInvoker with BookmarkResumer
* Register IWorkerManager
* Change lifetime scope of WorkerManager to Singleton
* **Introduce topic subscription handling for Kafka workers**
Added `IWorkerTopicSubscriber` interface and its implementation for managing topic subscriptions. Enhanced workers to bind triggers and bookmarks dynamically based on existing data. Updated several classes and methods to support topic-based subscriptions and headers.
* Refactor trigger matching logic.
Extract trigger matching conditions into `IsMatchAsync` method for reuse. This enhances code maintainability and readability by reducing redundancy. The new `GetTopic` helper method isolates the topic retrieval logic.
* Add Name property to MassTransitActivityTypeProvider
This commit inserts the Name property in the returned object within the MassTransitActivityTypeProvider class. It ensures that the typeName is included, providing a clearer definition of the activity type.
* Add handling for deleted bookmarks and refactor bookmark removal
Added a new event handler for `BookmarksDeleted` to ensure removed bookmarks are processed correctly. Refactored the bookmark removal logic into a helper method to reduce code duplication and streamline the workflow.
* Switch to asynchronous bookmark queue processing
Refactored the `TriggerWorkflows` handler to use `IBookmarkQueue` instead of directly invoking the `IBookmarkResumer`. This change aims to improve scalability by queueing bookmark resumption requests, enabling better load distribution and async processing. Added necessary helpers and configuration options to support this functionality.
* Remove unused IBookmarkResumer dependency
Simplify the constructor by removing the unused IBookmarkResumer dependency. This cleanup reduces potential confusion and improves code maintainability without impacting functionality.
* Add support for local message processing
Introduced an `IsLocal` property to `MessageReceivedStimulus` for determining if the message event is local to a specific workflow instance. Updated `BookmarkBinding` and related handler methods to utilize `CorrelationId` for local event matching. Removed unused `CorrelatingFields` from `MessageReceived` activity.
* Add nullability checks to IWorker retrieval methods
Updated `GetWorker` methods to return nullable `IWorker` to handle cases where a worker might not exist. Modified code to include null checks and conditional operations to prevent potential null reference exceptions when accessing worker methods.
* Add filtering based on activity type name for triggers and bookmarks
This commit introduces filtering for triggers and bookmarks based on the `MessageReceived` activity type name. It also adds an option to mark messages as local in the `SendMessage` activity, where local messages are delivered to the current workflow instance only. These changes help enhance the management and targeted delivery of messages within the workflow framework.
* Add new Kafka topics and clean up producers config
New topics "topic-3" and "topic-4" were added to the Kafka settings. Unused topic references were removed from the producers configuration to simplify and improve clarity.
* Add predicate to KafkaConsumerActivity in ConsumerWorkflow
Introduced a predicate to the KafkaConsumerActivity using JavaScript expressions to filter messages based on OrderId. This ensures only relevant messages are processed in the workflow.
* Sample to provide a ExpressionDescriptorProvider
* fix variable accessor in VariableExpressionHandler
* remove Variable Expression to use default one
* Change the Variable Expression Provider to handle Variable Expression correctly
* need to check on UI Side and Server side is valid JSON is sent. For example, if a use change from a literal value to a Variable value, the value is sent to the API and result in an exception, we cannot handle invalid json without using Try/Catch
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Co-authored-by: Jérémie DEVILLARD <jdevillard@users.noreply.github.com>
Co-authored-by: Sipke Schoorstra <sipkeschoorstra@outlook.com>
* Add JSON Serialization for Elsa expression
Extended the expression serialization. Added new classes ExpressionJsonConverter and ExpressionJsonConverterFactory implementing serialization of expression objects. Also, made respective changes in different serializers and related files for seamless integration.
* Fix XML comments
* Set initial builder Id in ClrWorkflowProvider
This commit involves a modification in ClrWorkflowProvider.cs where an Id was set for the builder. The Id was set with the format `workflowBuilderType.Name`:1.0, providing a deterministic identifier for each builder instance.
* Add MysteriousPondWorkflow and associated HTTP endpoints
A new workflow, MysteriousPondWorkflow, has been introduced along with HTTP endpoints to interact with it. The workflow simulates throwing an arbitrary amount of rupees into a mysterious pond and getting a luck prediction for the day based on the amount. An integration of this workflow is registered in the main Program.cs file, and the necessary directories to handle this workflow have been added to relevant project files.
The commit adds a more comprehensive handling of different JsonValueKind values in DefaultExpressionDescriptorProvider.cs. Now `JsonValueKind.Undefined`, `JsonValueKind.Null`, `JsonValueKind.Object`, and `JsonValueKind.Array` are specifically addressed, improving the reliability of JSON manipulation within Elsa workflows.
Refined the expression serialization context and its deserialization method for more extensive usage. Also, simplified the handling of value retrieval in the DefaultExpressionDescriptorProvider. This allows greater control over serialization processes and makes the code more concise.
The change was made in the DefaultExpressionDescriptorProvider.cs under Elsa.Workflows.Management. Instead of relying on the GetString method, the updated code now uses the ToString method for default value retrieval. This change improves how we process and retrieve default values in unspecified cases.
* Improve Elsa workflow expression serialization
Added serialization support for expressions in Elsa workflows, enabling serialization and deserialization to maintain consistent types across sessions. Updated relevant test cases for validation.
* Remove PR workflow from GitHub actions
The PR workflow has been removed from GitHub actions.
* add a more generic UIHandler to customize how inputAttributes can be handle by the ui
* Add IPropertyUIHandlerResolver and update PropertyUIHandlerResolver
Introduced a new interface, IPropertyUIHandlerResolver, to resolve UI options for a property. Refactored PropertyUIHandlerResolver to implement this interface and removed the unnecessary partial class structure. Also, cleaned up some unnecessary usings in various files for better code organization.
* Refactor variable name and description in InputDescriptor
The 'uISpecifications' variable in the InputDescriptor model is renamed to 'uiSpecifications' for better readability. Additionally, the associated comment was revised to explain that the dictionary is used by the UI.
* "Refactor codebase for improved organization and cleaner architecture"
The codebase has been significantly refactored, moving several classes to more appropriate namespaces for improved organization and cleaner architecture. This includes shifting UI hint handlers, activities, and memory-related components, amongst others. The changes should improve code readability and maintainability, but as this is a broad refactoring effort, thorough regression testing is advised.
* Add CheckList UIHint with associated handler and provider
This update introduces a new UIHint called CheckList to the Elsa.Workflows.Core. This includes the necessary handler and provider classes. The handler is registered in the WorkflowsFeature.cs, and the CheckList UIHint key has been added to the InputUIHints.cs. Various associated files have been created in both the Elsa.Api.Client and Elsa.Workflows.Core project to support this new UIHint.
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Co-authored-by: Jérémie DEVILLARD <jdevillard@users.noreply.github.com>
Co-authored-by: Sipke Schoorstra <sipkeschoorstra@outlook.com>
This commit refactors how expression descriptors are created and retrieved across Elsa project. The asynchronous methods have been simplified to synchronous ones removing unnecessary `ValueTask` returns. Additionally, `IExpressionDescriptorRegistryPopulator` has been removed resulting in less complexity and better performance.
* Incremental work
* Enable control over when to include full compositie root
* Cleanup
* Update WorkflowDefinitionActivity
* Implement input as variables
* Delete unused class
* Remove less common types
* Rename ExpandoObject to JSON
* Implement variable scoping
* Remove parent/child relationship from MemoryRegister
* Add support for sending input to "trigger event" endpoint
* Add support for configuring input storage driver
* Remove unused namespace imports
* Auto-register activity types when running a workflow
* Fix missing variables from containers
* Add array support for input/output arguments
* Add alias support for nullable types
* Refactor workflow definition store API
* Fix array and ui hint setting of input/output definition
* Refactor workflow instance store API
* Add XML comments
* Refactor trigger and bookmark store API
