Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Make a commit on a branch in a Travis CI build, dealing with detached HEAD state safely
#!/bin/bash
# function to make a commit on a branch in a Travis CI build
# be sure to avoid creating a Travis CI fork bomb
# see https://github.com/travis-ci/travis-ci/issues/1701
function travis-branch-commit() {
local head_ref branch_ref
head_ref=$(git rev-parse HEAD)
if [[ $? -ne 0 || ! $head_ref ]]; then
err "failed to get HEAD reference"
return 1
fi
branch_ref=$(git rev-parse "$TRAVIS_BRANCH")
if [[ $? -ne 0 || ! $branch_ref ]]; then
err "failed to get $TRAVIS_BRANCH reference"
return 1
fi
if [[ $head_ref != $branch_ref ]]; then
msg "HEAD ref ($head_ref) does not match $TRAVIS_BRANCH ref ($branch_ref)"
msg "someone may have pushed new commits before this build cloned the repo"
return 0
fi
if ! git checkout "$TRAVIS_BRANCH"; then
err "failed to checkout $TRAVIS_BRANCH"
return 1
fi
if ! git add --all .; then
err "failed to add modified files to git index"
return 1
fi
# make Travis CI skip this build
if ! git commit -m "Travis CI update [ci skip]"; then
err "failed to commit updates"
return 1
fi
# add to your .travis.yml: `branches\n except:\n - "/\\+travis\\d+$/"\n`
local git_tag=SOME_TAG_TRAVIS_WILL_NOT_BUILD+travis$TRAVIS_BUILD_NUMBER
if ! git tag "$git_tag" -m "Generated tag from Travis CI build $TRAVIS_BUILD_NUMBER"; then
err "failed to create git tag: $git_tag"
return 1
fi
local remote=origin
if [[ $GITHUB_TOKEN ]]; then
remote=https://$GITHUB_TOKEN@github.com/$TRAVIS_REPO_SLUG
fi
if [[ $TRAVIS_BRANCH != master ]]; then
msg "not pushing updates to branch $TRAVIS_BRANCH"
return 0
fi
if ! git push --quiet --follow-tags "$remote" "$TRAVIS_BRANCH" > /dev/null 2>&1; then
err "failed to push git changes"
return 1
fi
}
function msg() {
echo "travis-commit: $*"
}
function err() {
msg "$*" 1>&2
}
@beshur
Copy link

beshur commented Sep 22, 2018

Hi.
Thanks for sharing!

I did it a little more simple:
https://github.com/StoPlay/stoplay-ext/blob/fb0c721e69c48646f77cce98e2b5f6f83854cab2/.travis/push.sh

grunt release creates the commit with proper text here.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment