rdc.etl 1.0.0a6

Description:

rdc.etl 1.0.0a6

rdc.etl is an Extract Transform Load (ETL) toolkit for python 2.7+ (no
python 3 support yet). It gives you all the tools needed to create complex data
integration jobs from simple atomic io-connected transformation blocks.


Documentation
Full documentation for rdc.etl on ReadTheDocs.
This is a work in progress, the 1.0 API may change until 1.0 is released.


Example usage
>>> # Sample data extract transformation.
>>> # Use hardcoded data here for sample purpose.
>>> from rdc.etl.transform.extract import Extract
>>> @Extract
... def sample_extract():
... yield {'first_name': 'John', 'last_name': 'Doe', }
... yield {'first_name': 'Jane', 'last_name': 'Dae', }
>>> # Sample data transformation.
>>> from rdc.etl.transform import Transform
>>> @Transform
... def sample_transform(hash, channel):
... hash['last_name'] = hash['last_name'].upper()
... hash['initials'] = '{0}.{1}.'.format(hash['first_name'][0], hash['last_name'][0]).upper()
... yield hash
>>> # Sample load. This is only a screen log for sample purpose.
>>> from rdc.etl.transform.util import Log
>>> sample_load_to_screen = Log()
>>> # Tie everything together, then run!
>>> from rdc.etl.harness.threaded import ThreadedHarness
>>> job = ThreadedHarness()
>>> job.add_chain(sample_extract, sample_transform, sample_load_to_screen)
>>> job()


Running the Test Suite
pip install nose
make test


Release Notes

1.0.0a6

Database transformations: now present in rdc.etl.extra subpackages, to avoid
mixing core API and sugar box.
Database transformations: more flexibility in what is allowed (insert/update).
Better standard compliance (thanks #python)
Harness is now called Job, for simplicity sake. Old name will be kept too (BC).
XMLMap enhancements.
HTTP status interface (early minimalistic version).
Changed examples name to avoid import hell.
Less hackish http reader, better unicode support (@jmorel).
PasteScript can now be used to generate an empty working ETL project.
FileProxy based download manager.
Minor fixes.



1.0.0a5

Status: console now has amazing ansi, detailed io statistics, overall stats
(memory, time) added, experimental http status, db stats for database load.
API stabilization, cleanup and simplification towards 1.0.0.
Simple handling of KeyboardInterrupt: CTRL-C will now exit the running job
instead of making your process stale.
Maps simplification.
Enhancements to various transform classes: load.database.DatabaseLoad,
filter.Filter, map.xml.XmlMap, util.Log, join.database.DatabaseJoin
New transforms: util.Limit
Various bugfixes.
Minor enhancements: custom names in transforms, some more tests.
Moved repository to github.com/rdcli/etl.




Contributing
I’m Romain Dorgueil.
rdc.etl is on GitHub.
Get in touch, via GitHub or otherwise, if you’ve got something to contribute,
it’d be most welcome!
If you feel overwhelmingly grateful, or want to support the project you can tip
me on Gittip.