Building a Nowcast System

• A “Toy” Example of a Nowcast System
  • Conda Environment
  • nowcast Directory
  • Environment Variables
  • Nowcast System Configuration File
  • supervisord Process Manager Configuration File
  • next_workers Module
  • Running the Nowcast System
  • Running the sleep Worker
• Elements of a Nowcast System
  • Logging
  • Next Workers Module
• Creating Nowcast Worker Modules
  • Skeleton Worker Example
  • The main() Function
  • success() and failure() Functions
  • Doing the Work
  • Extending the Command Line Interface
• Nowcast Configuration File
  • Logging Configuration
  • ZeroMQ Server and Ports
  • Message Registry
  • Scheduled Workers
  • Example Nowcast Configuration File
• Built-in Workers
  • rotate_logs Worker
  • clear_checklist Worker
• Nowcast Process Management
  • Example Supervisor Configuration File