✨ feat(chat.py): add SSE support to post_build endpoint to stream build progress to the client
The post_build endpoint now returns a StreamingResponse object that streams Server-Sent Events (SSE) to the client. This allows the client to receive build progress updates in real-time. The event_stream function is responsible for generating the SSE events and is called by the StreamingResponse object. The SSE events contain information about the build progress, including whether the build was successful or not, the parameters used to build each node, and the node ID. The chat_manager.set_cache method is called to cache the built graph object.
🔥 refactor(manager.py): remove unused build method and rename set_cache to set_client_cache
🚀 chore(manager.py): add async keyword to close_connection method
The close_connection method now accepts an integer as the status parameter instead of a status enum. The build method was removed as it was not being used. The set_cache method was renamed to set_client_cache to improve semantics. The close_connection method was updated to be an async method.
🚀 feat(base.py): add generator_build method to build each node in the graph and yield it
The topological_sort method performs a topological sort of the vertices in the graph, returning a list of vertices in topological order. The generator_build method builds each node in the graph and yields it. These methods are useful for building the graph in a specific order, which is important for certain algorithms that rely on the order of the nodes.
✨ feat(chatComponent): add loading animation to build trigger component
The BuildTrigger component is added to the chatComponent to allow users to build a flow. The component is triggered by clicking on a button and sends a POST request to the server to build the flow. A loading animation is added to the component to indicate that the flow is being built. The postBuild function is added to the API controller to handle the POST request.
✨ feat(chatComponent): add BuildTrigger component to check if flow is built before showing ChatTrigger component
The ChatTrigger component now checks if the flow is built before allowing the user to open the chat. If the flow is not built, an error message is displayed instead. The BuildTrigger component is added to check if the flow is built before showing the ChatTrigger component. This improves the user experience by preventing the user from opening the chat before the flow is built.
🎨 refactor(run.py): update import statement for compute_dict_hash, load_cache, and memoize_dict
The import of logger in base.py was not being used, so it was removed to improve code readability. In run.py, the import statement for compute_dict_hash, load_cache, and memoize_dict was updated to reflect the new location of these functions in the cache.utils module. This improves the organization of the code and makes it easier to find the relevant functions.
✨ feat(manager.py): add build method to build langchain object and store it in an in-memory cache
The `process_message` method now checks if the langchain object has been built and stored in the in-memory cache before processing the message. If the object is not found, the connection is closed with an error message. A new `build` method has been added to build the langchain object and store it in an in-memory cache. This method is called before processing any messages.
✨ feat(cache/utils.py): add support for clearing old cache files and memoization of dictionary functions
The CACHE variable in CacheManager class has been renamed to _cache to follow naming conventions. The utils.py module now supports clearing old cache files and memoization of dictionary functions. The clear_old_cache_files function removes old cache files if the number of cache files exceeds the max_cache_size. The memoize_dict decorator memoizes dictionary functions and clears the cache when the clear_cache method is called.
This commit adds a new class InMemoryCache to implement an in-memory cache with a Least Recently Used (LRU) eviction policy. The cache supports setting a maximum size and expiration time for cached items. The cache is thread-safe using a threading Lock. The InMemoryCache class inherits from the BaseCache class and implements the get, set, get_or_set, delete, clear, __contains__, __getitem__, __setitem__, __delitem__, __len__, and __repr__ methods.
This commit refactors the BaseCache class to use abstract methods instead of concrete methods. This makes the class more flexible and allows for different implementations of the cache. The abstract methods include get, set, delete, clear, __contains__, __getitem__, __setitem__, and __delitem__.
✨ feat(cache/__init__.py): add InMemoryCache to exported modules
🔖 refactor(endpoints.py): remove unused import statement
The post_build endpoint in chat.py now has exception handling to catch any errors that may occur during the build process. InMemoryCache is now exported as part of the cache module. The endpoints.py file has been refactored to remove an unused import statement.
🐛 fix(langflow): fix version import error in version endpoint
The version endpoint is added to the API to allow clients to retrieve the version of the Langflow package. The version is obtained using the `metadata.version` function from the `importlib` module. In case the package metadata is not available, an empty string is returned. The version endpoint was previously returning an error due to an import error. The error is fixed by importing the `__version__` variable from the `langflow` module.
The `load_dotenv` function from the `dotenv` package is now used to load environment variables from a `.env` file. This allows for a more flexible configuration of the application as environment variables can be loaded from a file instead of being hardcoded in the code. The `.env` file path can be specified via the `env_file` parameter.
The fetch URL was incorrect and was calling the API with an absolute path instead of a relative path. This caused the API call to fail. The URL has been changed to a relative path to fix the issue.
🐛 fix(base.py): improve error message when invalid payload is received
The logger is added to the Graph class to improve debugging capabilities. The error message when an invalid payload is received is improved to include the keys that were found in the payload. This makes it easier to identify the issue and fix it.
The `display_name` field is added to the `FrontendNode` class to allow for a more user-friendly name to be displayed in the UI. If `display_name` is not set, the `name` field will be used instead.
✨ feat(vite.config.ts): add rewrite function to proxy configuration to add /api/v1 prefix to requests
The /api/v1 prefix was removed from the proxy target URL as it was already being added by the rewrite function. The rewrite function was added to the proxy configuration to add the /api/v1 prefix to requests, which is required by the backend API.
Fixes#458
Description
This pull request implements the NodeToolbar feature and migrates the
dialog UI to shadCN. The NodeToolbar introduces three actions:
duplicate, delete, and edit. The edit action allows users to modify the
advanced configuration of the tools. Additionally, this pull request
migrates the dialog UI to shadCN, specifically updating the prompt
dialog, code dialog, export dialog, python functions dialog and
tooltips. These enhancements improve the user experience and provide a
more efficient and modern interface.
Changes Made
Added NodeToolbar component to the application.
Implemented duplicate functionality, allowing users to create copies of
the selected nodes.
Implemented delete functionality, enabling users to remove selected
nodes.
Implemented edit functionality, providing users with the ability to
modify the advanced configuration of the tools.
Migrated the prompt dialog UI to shadCN, improving its appearance and
functionality.
Migrated the code dialog UI to shadCN, enhancing its usability and
aesthetics.
Migrated the export dialog UI to shadCN, resulting in a more streamlined
and intuitive interface.
Migrated the python functions dialog UI to shadCN, ensuring consistency
with the rest of the application's design.
Migrated the headlessUI tooltip to shadCN.
FYI: Need to improve the dialog subtitles texts.
This commit extracts the formatting methods for Azure and Llama fields from the `format_field` method to improve readability and maintainability of the code. The `format_azure_field` method formats the fields for Azure, while the `format_llama_field` method formats the fields for Llama. These methods are called conditionally based on the name of the field.
🐛 fix(API/index.ts): remove duplicate forward slash in API routes
The try-catch block was added to handle JSON parsing errors that may occur when parsing the cookieObject. This ensures that the application does not crash when such errors occur.
The duplicate forward slash in the API routes was removed to ensure that the routes are correctly formed and the API requests are sent to the correct endpoints.
🐛 fix(__main__.py): rename path variable to frontend_path for clarity
The first change fixes a type error for the multiprocess import. The second change renames the path variable to frontend_path to improve clarity and readability of the code.
🚀 feat(__main__.py): add optional open_browser argument to serve function to specify whether to open browser after starting server
The serve function now accepts an optional path argument to specify the path to the frontend directory containing build files. This is useful for development purposes only. The function also accepts an optional open_browser argument to specify whether to open the browser after starting the server. This is useful when running the server locally.
The code now checks if the streaming and stream attributes are boolean before setting them to True. This ensures that the attributes are not set to True if they are not boolean, which could cause errors in the code.
The abstractmethod decorator is redundant in the CustomChain and CustomAgentExecutor classes as the methods they decorate are already defined as abstract in the parent classes. Removing these decorators improves code readability and reduces clutter.
This commit makes the `function_name` and `initialize` methods abstract in the `CustomChain` and `CustomAgentExecutor` classes. This is done to enforce the implementation of these methods in the subclasses of these classes. This change improves the code quality and readability by making the code more explicit and easier to understand.
🐛 fix(interface/loading.py): fix custom_node instantiation to handle classes without initialize method
✨ feat(template/frontend_node/prompts.py): change type_name to match class name
✨ feat(template/frontend_node/tools.py): change type_name to match class name
🔥 chore(test_agents_template.py): remove test_agents_settings and update initialize_agent test
The vertex_type assignment in the Vertex class was not handling uppercase template types correctly. This has been fixed to handle both uppercase and lowercase types. The custom_node instantiation in the instantiate_class function was not handling classes without an initialize method correctly. This has been fixed to instantiate the class directly if the initialize method is not present. The type_name in the ZeroShotPromptNode and PythonFunctionToolNode classes have been changed to match the class name. The test_agents_settings test has been removed as it is no longer necessary and the initialize_agent test has been updated to match the new AgentInitializer class name.
🔨 refactor(base.py): add CustomAgentExecutor class and move CustomChain to base.py
🔨 refactor(custom_lists.py): update reference to CustomChain to CustomAgentExecutor
The CustomChain class has been renamed to CustomAgentExecutor to better reflect its purpose. The class has been moved to base.py and a new CustomAgentExecutor class has been added to custom.py. The reference to CustomChain in custom_lists.py has been updated to CustomAgentExecutor. These changes improve the semantics of the code and make it easier to understand the purpose of the classes.
