hanuman

hanuman -- Elegantly assemble small graphs

Graph

A graph is also a stage.

Stage

Stack

Can be graphed as stages butted up end-to-end: [][][]

• linear workflow (eg bash script)
• middleware stack
• before/after/around filters

• Graph -- collections of stages and edges

• Stage -- node (which might be a subgraph)

• Edge -- connection

• Chain -- linear subgraph

• graph, can look up a stage by name:

  github_repo(handle, attributes={}, &block) 
  # find-or-create stage
  # update with attributes
  # instance exec block
  
  find_stage(:github_repo, handle)
  # look up in the registry, nil if missing.
  

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Central store:

• counters
• timers
• metrics
• facts

Verbs

Data Flow

Lightweigh Control Messages

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