Local executing hook after a git push?
GitGithooksGit Problem Overview
I've looked at the githooks manpage but unless I'm missing something I don't see an option for local, post-push git hooks. I'd like to have one that updates the api docs on my web server (for which I already have a script) after I push the master branch to the GitHub repo. Of course I could just write my own script that combines the git push and the api docs run, but that feels somewhat inelegant.
Git Solutions
Solution 1 - Git
Another solution to this problem is to have a wrapper for git push
that executes .git/hooks/pre-push
and .git/hooks/post-push
scripts before and after the git push
call. A possible wrapper could look like this:
#!/bin/sh
GIT_DIR_="$(git rev-parse --git-dir)"
BRANCH="$(git rev-parse --symbolic --abbrev-ref $(git symbolic-ref HEAD))"
PRE_PUSH="$GIT_DIR_/hooks/pre-push"
POST_PUSH="$GIT_DIR_/hooks/post-push"
test -x "$PRE_PUSH" &&
exec "$PRE_PUSH" "$BRANCH" "$@"
git push "$@"
test $? -eq 0 && test -x "$POST_PUSH" &&
exec "$POST_PUSH" "$BRANCH" "$@"
Saved as git-push-wh
somewhere in your PATH
, it can then be called as git push-wh
if you want to push with hooks.
Solution 2 - Git
This type of hook is not supported by Git. It falls outside the valid reasons for a Git hook as given by Git's maintainer.
The introductory remark in the above linked message speaks almost directly to your case: > I do not particularly like hooks that > act after an operation is initiated > locally and act solely on local data. > This is maybe because I still consider > git tools building blocks suitable for > higher level scripting more than other > people do.
P.S. A “Single Push” Hint
- There are too many caveats for a full explanation, but if you can figure it all out you should be able to deal with the details.
An extra pushurl
to a local repo with an “alternates” objects store could give you a low overhead way to locally execute a push hook. But really, the effort is much more than git push upstream && update-web-server
(maybe in a shell alias, git alias, or script).
Solution 3 - Git
I recently came across the same issue. I wanted a hook so that a push from my git submodule would commit the new submodule reference in the 'superproject'.
As Chris mentioned, the best way is to just use a git alias, like this:
$ git config alias.xpush '!git push $1 $2 && update-server.sh'
# (remember the backslash before the ! if your shell requires it)
This adds the following to your .git/config file:
[alias]
xpush = !git push $1 $2 && update-server.sh
And so now, if you type:
$ git xpush
your changes will be pushed, and then update-server.sh will be executed.
Solution 4 - Git
From Git 1.8.2 there is a new hook invoked before the push operation: pre-push If the script returns other than 0 the push operation will be cancelled.
Mention in the release notes: https://github.com/git/git/blob/master/Documentation/RelNotes/1.8.2.txt#L167
Solution 5 - Git
I'm using a function for this:
current_branch() {
local ref=$(git symbolic-ref HEAD 2> /dev/null) || return
echo ${ref#refs/heads/}
}
gp() {
local post_push="$(git rev-parse --git-dir)/hooks/post-push"
git push "$@" && {
[[ -x "$post_push" ]] && "$post_push" "$(current_branch)" "$@"
}
}
compdef _git gp=git-push
The compdef part is for ZSH.
Solution 6 - Git
Just create a pre-push
hook with a sleep at the top. Ensure sleep is long enough for the commits to be uploaded to upstream server based on your network connection speed. Ideally add a &
to run your script in the background:
(sleep 30 && .git/hooks/post-push) &
Solution 7 - Git
Implementing a post-push hook is in fact possible by using the reference-transaction
hook. After a push is done, git will locally update the remote tracking branch, triggering a reference transaction on refs/remotes/REMOTE/BRANCH
.