Writing Workflows

• Workflow Configuration
  • The flow.cylc File
  • Workflow Configuration Directories
• Scheduling Configuration
  • The Graph
  • Graph Types
  • Cycling Syntax Rules
  • Task Triggering
  • Required Outputs
  • Optional Outputs
  • Graph Branching
  • Limiting Workflow Activity
  • Valid Task Cycle Points
  • Omitting Tasks
• Task Configuration
  • Task and Family Names
  • The Root Family
  • Defining Multiple Tasks or Families at Once
  • Families of Families
  • Inheriting from Multiple Parents
  • Job Environment
  • Remote Task Hosting
  • Implicit Tasks
  • Task Retry On Failure
  • Event Handling
• Task Parameters
  • Parameter Expansion
  • Passing Values To Tasks
  • Selecting Specific Values
  • Selecting Partial Ranges
  • Offsets in the Graph
  • Task Families and Parameters
  • Parameterized Cycling
• Jinja2
  • Accessing Environment Variables
  • Custom Jinja2 Filters, Tests and Globals
  • Associative Arrays In Jinja2
  • Default Values and Template Variables
  • Jinja2 Variable Scope
  • Raising Exceptions
  • Importing Python modules
  • Logging
  • Debugging
• EmPy
• External Triggers
  • Built-in Clock Triggers
  • Built-in Workflow State Triggers
  • Custom Trigger Functions
  • Current Limitations
  • Filesystem Events?
  • Continuous Event Watchers?
  • Push External Triggers
  • Triggering Off Of Tasks In Other Workflows
• Suicide Triggers
  • Remaining Use Case
• Scheduler Configuration
  • Event handlers
  • External Command Execution
  • Submitting Workflows To a Pool Of Hosts