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Typed Python interface to AWS Simple Workflow service

Project description

Python interface to SWF

Typed Python interface to AWS Simple Workflow service

  • Type annotations
  • Explicit exceptions
  • Execution state construction
  • Consistent method/attribute/parameter names (see below)
  • Consistent model struture
  • Automatic flattening of paged-list responses
    • next-page calls are run concurrently and on-demand
  • Better execution filtering

The most interesting part is state construction: given an execution history, this library can build a full state of the execution and all of its tasks with all details; see swf_typed.build_state. The rest of the API simply wraps and closely matches AWS's SWF API.

See also

Installation

pip install swf-typed

Usage

See the full documentation.

Example

import swf_typed

execution = swf_typed.ExecutionId(id="spam", run_id="abcd1234")
execution_details = swf_typed.describe_execution(execution, domain="eggs")
print(execution_details.configuration)

events = swf_typed.get_execution_history(execution, domain="eggs")
state = swf_typed.build_state(events)
for task in state.tasks:
    print(task.status)

Terminology

This library uses a slight terminology change from SWF SDKs/APIs:

  • Workflow type -> workflow
  • Workflow execution -> execution
  • Workflow execution workflowId -> execution ID
  • Activity type -> activity
  • Activity task -> task
  • Activity worker -> worker
  • Activity task activityId -> task ID

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