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Generate State Workflow

Overview

User Code: com.finmars.standard-workflow:generate-state

This script is designed to generate state files for state managers. It processes input data to create a structured state file that includes information about workers and their respective states.

Workflow Function

The main workflow function is a task that generates the state file based on the provided payload.

Parameters:

  • payload: A dictionary containing the necessary information for state generation.

Process:

  1. Validates the presence of a payload
  2. Retrieves the input data from the specified path
  3. Generates a new state file using the generate_state_file function
  4. Saves the generated state file
  5. Updates the status of the operation in the state file

State File Generation

The generate_state_file function creates the structure of the state file.

State File Structure:

{
  "user_code": "string",
  "configuration_code": "string",
  "name": "string",
  "status": "string",
  "schedule": "object",
  "workers": [
    {
      "order": "integer",
      "configuration_code": "string",
      "name": "string",
      "user_code": "string",
      "status": "string",
      "state_type": "string",
      "data_options": "object",
      "import_options": "object",
      "calculation_options": "object",
      "download_options": "object",
      "state_options": "object",
      "state": "object"
    }
  ]
}

Worker State Types:

  1. Fixed: A single state for the worker.
  2. Files: Multiple states based on files in a specified directory.
  3. Period: Multiple states based on date ranges and portfolios.

Field Values

General Fields:

  • status: "to-do", "in-progress", "done", "error"
  • state_type: "fixed", "files", "period"

Period-specific Fields:

  • periodicity: "daily", "weekly", "monthly"
  • date_from: A date string ("YYYY-MM-DD") or "first_transaction_date"
  • date_to: A date string ("YYYY-MM-DD") or "now"

Download Options:

  • type: "day" or other (assumed to be a period)

Helper Functions

  1. get_first_transaction_date: Retrieves the earliest transaction date from the API.
  2. get_next_date: Calculates the next date based on the given periodicity.
  3. get_period_end_date: Calculates the end date of a period based on the start date and periodicity.
  4. build_url: Constructs the full API URL for a given endpoint.
  5. get_headers: Generates headers with authorization token for HTTP requests.
  6. log_message: Logs a message with a timestamp.
  7. save_file: Saves data to a specified file path in JSON format.
  8. get_files: Lists files in the specified directory.
  9. get_folders: Lists directories in the specified path.
  10. get_data: Reads data from a JSON file.

Error Handling

The script includes error handling for various scenarios, such as missing payloads, file read/write errors, and API communication issues. Errors are logged and, where appropriate, propagated to the state file.

Notes

  • The script uses the finmars module for storage operations and API communication.
  • Date handling is done using the pandas library for consistency and ease of manipulation.
  • The script is designed to be flexible, handling different worker state types and periodicities.
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