79 lines
2.8 KiB
Bash
Executable File
79 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2019 The gVisor Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -eo pipefail
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# Discovery the package name from the go.mod file.
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declare -r gomod="$(pwd)/go.mod"
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declare -r module=$(cat "${gomod}" | grep -E "^module" | cut -d' ' -f2)
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declare -r gosum="$(pwd)/go.sum"
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# Check that gopath has been built.
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declare -r gopath_dir="$(pwd)/bazel-bin/gopath/src/${module}"
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if ! [ -d "${gopath_dir}" ]; then
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echo "No gopath directory found; build the :gopath target." >&2
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exit 1
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fi
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# Create a temporary working directory, and ensure that this directory and all
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# subdirectories are cleaned up upon exit.
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declare -r tmp_dir=$(mktemp -d)
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finish() {
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cd # Leave tmp_dir.
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rm -rf "${tmp_dir}"
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}
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trap finish EXIT
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# Record the current working commit.
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declare -r head=$(git describe --always)
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# We expect to have an existing go branch that we will use as the basis for
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# this commit. That branch may be empty, but it must exist.
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declare -r go_branch=$(git show-ref --hash origin/go)
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# Clone the current repository to the temporary directory, and check out the
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# current go_branch directory. We move to the new repository for convenience.
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declare -r repo_orig="$(pwd)"
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declare -r repo_new="${tmp_dir}/repository"
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git clone . "${repo_new}"
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cd "${repo_new}"
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# Setup the repository and checkout the branch.
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git config user.email "gvisor-bot@google.com"
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git config user.name "gVisor bot"
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git fetch origin "${go_branch}"
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git checkout -b go "${go_branch}"
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# Start working on a merge commit that combines the previous history with the
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# current history. Note that we don't actually want any changes yet.
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git merge --allow-unrelated-histories --no-commit --strategy ours ${head}
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# Sync the entire gopath_dir and go.mod.
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rsync --recursive --verbose --delete --exclude .git --exclude README.md -L "${gopath_dir}/" .
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cp "${gomod}" .
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cp "${gosum}" .
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# There are a few solitary files that can get left behind due to the way bazel
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# constructs the gopath target. Note that we don't find all Go files here
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# because they may correspond to unused templates, etc.
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cp "${repo_orig}"/runsc/*.go runsc/
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# Update the current working set and commit.
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git add . && git commit -m "Merge ${head} (automated)"
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# Push the branch back to the original repository.
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git remote add orig "${repo_orig}" && git push -f orig go:go
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