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examples: add git post-receive hook example

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Oliver Giles 2021-07-30 19:59:13 +12:00
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UserManual.md
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@ -198,6 +198,8 @@ This is what [git hooks](https://git-scm.com/book/gr/v2/Customizing-Git-Git-Hook
LAMINAR_REASON="Push to git repository" laminarc queue example-build LAMINAR_REASON="Push to git repository" laminarc queue example-build
``` ```
For a more advanced example, see [examples/git-post-receive-hook-notes](https://github.com/ohwgiles/laminar/blob/master/examples/git-post-receive-hook-notes)
What if your git server is not the same machine as the laminar instance? What if your git server is not the same machine as the laminar instance?
## Triggering on a remote laminar instance ## Triggering on a remote laminar instance

42
examples/git-post-receive-hook-notes Executable file
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@ -0,0 +1,42 @@
#!/bin/bash -e
# Simple post-receive hook that triggers a laminar run
# for every commit pushed to every branch, and annotates
# the commit with the run number using a git note.
# On the cloned repository, useful config is
# git config --add remote.origin.fetch "+refs/notes/*:refs/notes/*"
# to automatically fetch all notes from the origin, and
# git config --add notes.displayRef "refs/notes/*"
# to display all notes in the git log by default
# The laminar job to trigger
LAMINAR_JOB=my-project
# Default notes ref is refs/notes/commits
NOTES_REF=refs/notes/ci
# For each ref pushed...
while read old new ref; do
# Skip tags, notes, etc. Only do heads.
# Extend this to only trigger on specific branches.
if [[ $ref != refs/heads/* ]]; then
continue
fi
# Otherwise, for each new commit in the ref...
# (to only trigger on the newest, set commit=$new and delete the loop)
git rev-list $([[ $old =~ ^0+$ ]] && echo $new || echo $old..$new) | while read commit; do
# Queue the laminar run
run=$(laminarc queue $LAMINAR_JOB commit=$commit ref=$ref)
echo "Started Laminar $run for commit $commit to ref $ref"
# Add a git note about the run
blob=$(echo -n "Laminar-Run: $run" | git hash-object -w --stdin)
if last_note=$(git show-ref -s $NOTES_REF); then
git read-tree $last_note
p_arg=-p
fi
git update-index --add --cacheinfo 100644 $blob $commit
tree=$(git write-tree)
new_note=$(echo "Notes added by post-receive hook" | git commit-tree $tree $p_arg $last_note)
git update-ref $NOTES_REF $new_note $last_note
done
done