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Managing requirements for a many-thousands cont...
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flaper87
February 21, 2016
Programming
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Managing requirements for a many-thousands contributors software
flaper87
February 21, 2016
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Transcript
Managing requirements for a >1k contributors software
None
dafuq?, smiling cat?
For attending Still here feel free to interrupt @flaper87
[email protected]
None
The problem Co-Installable software What do we depend on? Requirements
Synced
What do we depend on? License requirements Binary vs Pure
Python Py27 / Py34 support
What do we depend on? License requirements Binary vs Pure
Python Py27 / Py34 support
What do we depend on? License requirements Binary vs Pure
Python Py27 / Py34 support
What do we depend on? License requirements Binary vs Pure
Python Py27 / Py34 support
requirements >= synced Project 1 Project 2 Project 3 Project
N
Co-Installable software Compute Requirements Storage Requirements Network Requirements
Co-Installable software Compute Requirements Storage Requirements Network Requirements openstack libraries
Third-Party libraries transitive dependencies
Co-Installable software Essential for integration tests
OpenStack [...] to produce the ubiquitous Open Source Cloud Computing
platform that will meet the needs of public and private clouds regardless of size, by being simple to implement and massively scalable. [...]
Compute & storage We’ve been adding new projects to the
ecosystem ever since OpenStack was created
Compute & storage auth We’ve been adding new projects to
the ecosystem ever since OpenStack was created
Compute & storage db auth We’ve been adding new projects
to the ecosystem ever since OpenStack was created
Compute & storage Network db auth We’ve been adding new
projects to the ecosystem ever since OpenStack was created
Compute & storage Network Messages db auth We’ve been adding
new projects to the ecosystem ever since OpenStack was created
Compute & storage Network Messages db auth Images We’ve been
adding new projects to the ecosystem ever since OpenStack was created
Compute & storage Images DB net auth All these projects
ought to be able to run under the same environment
Centralized requirements
For every requirement file Main Tests Extra
For every requirement file Direct & Transitive
For every requirement file Internal & Third-Party
Not editable mode (-e)
Not external source (-f)
CI Job forbidding untracked requirements
minimum Working version
No Dependency Caps
Requirements Constraints
1 2 3 4 Does it have an acceptable license?
Is it Py3 compatible? Is it actively maintained? Is it packaged already? 5 Does something similar exists already? Ask yourself these questions
... Or you can just ignore this ...
1 2 3 4 Use the minimum version possible Avoid
dependencies that don’t do semver Capping is not always good Favor things on PyPi 5 Keep track of transitive dependencies Summary-ish
Questions?