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A set of common utilities and helpers for CHORD.

Project description

CHORD Library (for Python CHORD microservices)

Build Status codecov PyPI version

Common utilities and helpers for CHORD services.

Running Tests

python3 -m pytest --cov=chord_lib --cov-branch



events facilitates JSON-serialized message-passing between CHORD microservices. Serialized objects can be at most 512 MB.

Events should have a lower-case type which is type-insensitively unique and adequately describes the associated data.

All CHORD channels are prefixed with chord..


ingestion contains common code used for handling ingestion routines in different CHORD data services.


schemas contains common JSON schemas which may be useful to a variety of different CHORD services.

schemas.chord contains CHORD-specific schemas, and schemas.ga4gh contains GA4GH-standardized schemas (possibly not exactly to spec.)


search contains definitions, validators, and transformations for the query syntax for CHORD, as well as a transpiler to the psycopg2 PostgreSQL IR.


utils contains miscellaneous utilities commonly required by CHORD services.


workflows contains common code used for handling workflow metadata processing and response generation.

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