The values and challenges of Open Source at source{d}

VP of Developer Relations [email protected] @francesc campoy

Agenda source{d} and Open Source Our MIssion - ML on Code - Code as Data Open Core Open Source Benefitting from Open Source Cooperation Contributions Protecting with Open Source Copyleft Licenses MIT, Apache v2, GPLs Q&A

source{d} and Open Source

source{d} and Open Source our mission Improving the Developer Experience through Machine Learning

source{d} and Open Source our mission Requires large datasets Results in trained models Examples: - Bug prediction - Automated Code Review ML on Code Large software repositories Source code *and* history of revisions Extracting metrics - Business Intelligence SQL, GraphQL, REST interfaces Code as Data

ML on Code Code as Data Code

source{d} and Open Source Open Core Open Source Core Tools & Services

benefitting from Open Source

benefitting from Open Source the tools we use

benefitting from Open Source contributing back go-git Git library for Go Similar to jgit or gitlib +2.7k stars on GitHub enry Language Classifier Higher performance & accuracy than GitHub’s linguist

benefitting from Open Source contributing back go-git Git library for Go Similar to jgit or gitlib +2.7k stars on GitHub enry Language Classifier Higher performance & accuracy than GitHub’s linguist babelish Universal Code Parser Universal ASTs Easily extensible

benefitting from Open Source contributing back go-git Git library for Go Similar to jgit or gitlib +2.7k stars on GitHub enry Language Classifier Higher performance & accuracy than GitHub’s linguist babelish Universal Code Parser Universal ASTs Easily extensible gitbase SQL interface for git Integrates go-git, enry, babelfish, and more Code as Data

benefitting from Open Source contributions to our projects

benefitting from Open Source “Open Sourcing our libraries makes better for everyone.” contributions to our projects

a quick history of Open Source

a quick history of Open Source Richard Stallman

a quick history of Open Source Xerox 9700

a quick history of Open Source Free Software Foundation

a quick history of Open Source GNU/Linux

protecting with open source

protecting with open source GNU General Public License v3 (GPL) source: tldrlegal.com

Viral Licensing

Apollo / Gemini

protecting with open source GNU Affero General Public License v3 (AGPL) source: tldrlegal.com

protecting with open source Apache License v2 source: tldrlegal.com

go-git

protecting with open source Open Data Commons Open Database License (ODbL) source: tldrlegal.com

Public Git Archive

protecting with open source Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) source: tldrlegal.com

Awesome Machine Learning On Source Code

protecting with open source MIT License source: tldrlegal.com

blog.sourced.tech

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protecting with open source Developer Certificate of Origin This agreement states three things: 1. you offer the changes under the same license agreement as the project, and 2. you have the right to do that, 3. you did not steal somebody else’s work. ➜ git commit -s -m "adding some feature" ➜ git log -n 1 | cat commit 2cbd480cc1ea29c8e8193637c73eeb7ab92d0f86 Author: Francesc Campoy adding some feature Signed-off-by: Francesc Campoy

Review source{d} and Open Source Our MIssion - ML on Code - Code as Data Open Core Open Source Benefitting from Open Source Cooperation Contributions History of Free Software Protecting with Open Source Copyleft Licenses MIT, Apache v2, GPLs Q&A That’s now!

Q&A

References References ● sourced.tech / github.com/src-d ● tldrlegal.com ● The AGPL | MongoDB ● GNU Affero General Public License- GNU Project - Free Software Foundation ● What is Copyleft? - GNU Project - Free Software Foundation ● Why Open Source Misses the Point of Free Software - GNU Project - Free Software Foundation ● The Cathedral and the Bazaar - Wikipedia

Francesc Campoy [email protected] @francesc campoy