upstream-fetch

#!/bin/bash -ex


push=1
release_head="latest"
checkout=$(pwd)
# Parse command-line options
while getopts "i:d:h:no:r:tv8z:e:" opt; do
    case "$opt" in
        d)  downstream_version=$OPTARG
            ;;
        h)  release_head=$OPTARG
            ;;
        n)  push=0
            ;;
        o)  out_file=$OPTARG
            ;;
        x)  remove_resources=$OPTARG
            ;;
        r)  private_repo=$OPTARG
            ;;
        t)  run_tests=1
            ;;
        8)  run_pep=1
            ;;
        e)  previous_version=$OPTARG
            ;;
        i)  ssh_key=$OPTARG
            ;;
        \?) echo "Invalid option: -$OPTARG" >&2
            echo -e "$usage"
            exit 1
            ;;
        :)
            echo "Option -$OPTARG requires an argument." >&2
            exit 1
            ;;
    esac
done

# Make sure all required options have been given
if ! [[ $private_repo && $downstream_version ]]
then
    echo -e "The -r and -d options are required.\n"
    echo -e "$usage $private_repo $downstream_version"
    exit 1
fi

# Construct upstream version string
cd $private_repo
git fetch upstream
if [[ $release_head == "latest" ]]; then
    sha1=$(git rev-parse upstream/master | cut -c1-7)
else
    sha1=$release_head
fi
upstream_version=$(date '+%Y%m%d')-g$sha1

branch=upstream

# Delete branch if it already exists
if git show-ref builds/$branch; then
    git checkout upstream/master
    git branch -D builds/$branch
fi

# Create a branch at upstream SHA1
git branch builds/$branch $sha1
git checkout builds/$branch
echo $branch

# Generate changelog
python $checkout/scripts/changelog.py --output changelog ${previous_version} builds/${branch}
git add changelog
git commit -m "Add release changelog for ${branch}"

# Create a branch for the release type
if [[ $push -eq 1 ]]; then
    git push -f private builds/$branch:refs/heads/$branch
fi
if [[ $out_file ]]; then
    echo $branch > $out_file
fi