element-web/scripts/fetchdep.sh
2021-06-22 16:14:01 +01:00

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#!/bin/bash
set -x
deforg="$1"
defrepo="$2"
defbranch="$3"
[ -z "$defbranch" ] && defbranch="develop"
rm -r "$defrepo" || true
clone() {
org=$1
repo=$2
branch=$3
if [ -n "$branch" ]
then
echo "Trying to use $org/$repo#$branch"
git clone git://github.com/$org/$repo.git $repo --branch "$branch" --depth 1 && exit 0
fi
}
# Try the PR author's branch in case it exists on the deps as well.
# First we check if GITHUB_HEAD_REF is defined,
# Then we check if BUILDKITE_BRANCH is defined,
# if they aren't we can assume this is a Netlify build
if [ -n "$GITHUB_HEAD_REF" ]; then
head=$GITHUB_HEAD_REF
elif [ -n "$BUILDKITE_BRANCH" ]; then
head=$BUILDKITE_BRANCH
else
# Netlify doesn't give us info about the fork so we have to get it from GitHub API
apiEndpoint="https://api.github.com/repos/matrix-org/matrix-react-sdk/pulls/"
apiEndpoint+=$REVIEW_ID
head=$(curl $apiEndpoint | jq -r '.head.label')
fi
# If head is set, it will contain on Buildkite either:
# * "branch" when the author's branch and target branch are in the same repo
# * "fork:branch" when the author's branch is in their fork or if this is a Netlify build
# We can split on `:` into an array to check.
# For GitHub Actions we need to inspect GITHUB_REPOSITORY and GITHUB_ACTOR
# to determine whether the branch is from a fork or not
BRANCH_ARRAY=(${head//:/ })
if [[ "${#BRANCH_ARRAY[@]}" == "1" ]]; then
if [ -n "$GITHUB_HEAD_REF" ]; then
if [[ "$GITHUB_REPOSITORY" == "$deforg"* ]]; then
clone $deforg $defrepo $GITHUB_HEAD_REF
else
REPO_ARRAY=(${GITHUB_REPOSITORY//\// })
clone $REPO_ARRAY[0] $defrepo $GITHUB_HEAD_REF
fi
else
clone $deforg $defrepo $BUILDKITE_BRANCH
fi
elif [[ "${#BRANCH_ARRAY[@]}" == "2" ]]; then
clone ${BRANCH_ARRAY[0]} $defrepo ${BRANCH_ARRAY[1]}
fi
# Try the target branch of the push or PR.
if [ -n $GITHUB_BASE_REF ]; then
clone $deforg $defrepo $GITHUB_BASE_REF
elif [ -n $BUILDKITE_PULL_REQUEST_BASE_BRANCH ]; then
clone $deforg $defrepo $BUILDKITE_PULL_REQUEST_BASE_BRANCH
fi
# Try HEAD which is the branch name in Netlify (not BRANCH which is pull/xxxx/head for PR builds)
clone $deforg $defrepo $HEAD
# Use the default branch as the last resort.
clone $deforg $defrepo $defbranch