问题
that's more of a know-how questions probably:
I'm versioning with git and send files for a PHP CMS to the test or production site using rsync. Now I'd like to keep track on what commit is currently deployed using a fool-proof and automated system, I was thinking about this:
Set up a git hook to add/update a text file with the latest tag and commit hash. Then I can easily look up the commit.
My problem is that at the time of pre-commit the script won't know the commit hash. Is there any straight-forward method to get that done (or another approach that comes to the same ends)?
Thanks for your input in advance!
回答1:
Alright, I think I got an ok-solution:
There is a git hook called post-commit and here is what I do:
- I put the file holding the tag/hash on .gitignore (to avoid unnecessary changes on the next commit)
- Let the post-commit hook update the version file.
Content of the hook file:
#!/bin/sh
git describe --tags > version.txt
Now I'm sure that file is up-to-date after each commit, so I'm all set as long as I do a commit before deploying.
Notes: Nasty beginner's caveat: make the hook file executable, git ignores the file without warning if it isn't.
All about git hooks: http://git-scm.com/book/en/Customizing-Git-Git-Hooks
All about .gitignore: http://git-scm.com/book/en/Git-Basics-Recording-Changes-to-the-Repository#Ignoring-Files
Cheers,
Martin
回答2:
This is an FAQ.
https://git.wiki.kernel.org/index.php/Git_FAQ#Does_Git_have_keyword_expansion.3F
Search for export-subst in gitattributes(5), you need to use git-archive(1) to get the substitution done.
(%H gives you the hash. In order the get the tag you would still need a script that calls git-describe(1), I don't see a format for that)
回答3:
Since you're using rsync to deploy your code, then, do something like this:
$ git describe --long > VERSION.txt
Then, include the VERSION.txt in the rsync package.
The git describe string looks like this:
$ git describe --long
r1.0-2-gca93d0a
In the above:
- Latest tag is r1.0
- The 2 indicates that we are two commits past that tag
- The g stands for 'git' (ok, that's a little weird, but, oh well)
- The current hash is ca93d0a
来源：https://stackoverflow.com/questions/16364826/git-have-current-commit-hash-and-latest-tag-in-file-on-commit