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The Google App Engine Pipeline API connects together complex, time-consuming workflows (including human tasks). The goals are flexibility, workflow reuse, and testability. A primary use-case of the API is connecting together various App Engine MapReduces into a computational pipeline.
This project is open source and community-supported. Please join the mailing list to ask questions. There are implementations in both Python and Java.
- Read the Getting Started guides for Python and Java to learn about the Pipeline API
- Take a look at the Python or Java examples
A series of articles explaining the Python Pipeline API in tutorial fashion.
The Pipeline library includes a UI for debugging, which shows:
- Status of the pipeline
- Values of all parameters and returned values
- Spawned children
- Status message and links to consoles
Here is an example of a running pipeline with example console:
A Pipeline where all elements have completed
