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CouchDB Git Hook

This hook is installed on user repositories as a post-receive hook. The hooks receives information about pushed refs via stdin, like this:

# `<old-value> SP <new-value> SP <ref-name> LF`
# 0000000000000000000000000000000000000000 f2a4dfdcbb970b22aca260144ac294c31a41a832 refs/heads/master
# 0000000000000000000000000000000000000000 6147b545c5c21473dbd4327fcf4121b99fe4dcd2 refs/heads/mybranch

See https://git-scm.com/docs/githooks#post-receive for reference.

After each receive event, it creates a CouchDB document in the users database. This is a push to master branch:

{
  "_id": "repo:myrepo:branch:master:ref:2fec5028e492bee6395d77107ae0debd3dd855f2",
  "_rev": "1-967a00dff5e02add41819138abb3284d"
}

And this a push to mybranch:

{
  "_id": "repo:myrepo:branch:mybranch:ref:6147b545c5c21473dbd4327fcf4121b99fe4dcd2",
  "_rev": "1-967a00dff5e02add41819138abb3284d"
}

The hook can either be copied over or symlinked into each user repository, or called like this: hooks/post-receive:

#!/bin/bash
/usr/local/bin/couchdb-git-hook <&0

TODO:

Currently the CouchDB url is hardcoded. We should find a uniform way how to handle such configuration.

Testing

You can invoke an test the script manually like so:

echo "0000000000000000000000000000000000000000 f2a4dfdcbb970b22aca260144ac294c31a41a832 refs/heads/master" | ./couchdb-git-hook.sh