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Diffstat (limited to 'tools/go_branch.sh')
| -rwxr-xr-x | tools/go_branch.sh | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/tools/go_branch.sh b/tools/go_branch.sh deleted file mode 100755 index 392e40619..000000000 --- a/tools/go_branch.sh +++ /dev/null @@ -1,171 +0,0 @@ -#!/bin/bash - -# Copyright 2019 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -set -xeou pipefail - -# Remember our current directory. -declare orig_dir -orig_dir=$(pwd) -readonly orig_dir - -# Record the current working commit. -declare head -head=$(git describe --always) -readonly head - -# Create a temporary working directory, and ensure that this directory and all -# subdirectories are cleaned up upon exit. -declare tmp_dir -tmp_dir=$(mktemp -d) -readonly tmp_dir -finish() { - cd "${orig_dir}" # Leave tmp_dir. - rm -rf "${tmp_dir}" # Remove all contents. - git checkout -f "${head}" # Restore commit. -} -trap finish EXIT - -# Discover the package name from the go.mod file. -declare module origpwd othersrc -module=$(cat go.mod | grep -E "^module" | cut -d' ' -f2) -origpwd=$(pwd) -othersrc=("go.mod" "go.sum" "AUTHORS" "LICENSE") -readonly module origpwd othersrc - -# Build an amd64 & arm64 gopath. -declare -r go_amd64="${tmp_dir}/amd64" -declare -r go_arm64="${tmp_dir}/arm64" -make build BAZEL_OPTIONS="" TARGETS="//:gopath" -rsync --recursive --delete --copy-links bazel-bin/gopath/ "${go_amd64}" -make build BAZEL_OPTIONS=--config=cross-aarch64 TARGETS="//:gopath" 2>/dev/null -rsync --recursive --delete --copy-links bazel-bin/gopath/ "${go_arm64}" - -# Strip irrelevant files, i.e. use only arm64 files from the arm64 build. -# This is because bazel may generate incorrect files for non-target platforms -# as a workaround. See pkg/sentry/loader/vdsodata as an example. -find "${go_amd64}/src/${module}" -name '*_arm64*.go' -exec rm -f {} \; -find "${go_amd64}/src/${module}" -name '*_arm64*.s' -exec rm -f {} \; -find "${go_arm64}/src/${module}" -name '*_amd64*.go' -exec rm -f {} \; -find "${go_arm64}/src/${module}" -name '*_amd64*.s' -exec rm -f {} \; - -# See below. The certs.go file is pseudo-random, and therefore will also -# differ between the branches. Since we merge, it only has to come from one. -# We arbitrarily keep the one from the amd64 branch, and drop the arm64 one. -rm -f "${go_arm64}/src/${module}/webhook/pkg/injector/certs.go" - -# Check that all files are compatible. This means that if the files exist in -# both architectures, then they must be identical. The only ones that we expect -# to exist in a single architecture (due to binary builds) may be different. -function cross_check() { - (cd "${1}" && find "src/${module}" -type f | \ - xargs -n 1 -I {} sh -c "diff '${1}/{}' '${2}/{}' 2>/dev/null; test \$? -ne 1") -} -cross_check "${go_arm64}" "${go_amd64}" -cross_check "${go_amd64}" "${go_arm64}" - -# Merge the two for a complete set of source files. -declare -r go_merged="${tmp_dir}/merged" -rsync --recursive "${go_amd64}/" "${go_merged}" -rsync --recursive "${go_arm64}/" "${go_merged}" - -# We expect to have an existing go branch that we will use as the basis for this -# commit. That branch may be empty, but it must exist. We search for this branch -# using the local branch, the "origin" branch, and other remotes, in order. -git fetch --all -declare go_branch -go_branch=$( \ - git show-ref --hash refs/heads/go || \ - git show-ref --hash refs/remotes/origin/go || \ - git show-ref --hash go | head -n 1 \ -) -readonly go_branch - -# Clone the current repository to the temporary directory, and check out the -# current go_branch directory. We move to the new repository for convenience. -declare repo_orig -repo_orig="$(pwd)" -readonly repo_orig -declare -r repo_new="${tmp_dir}/repository" -git clone . "${repo_new}" -cd "${repo_new}" - -# Setup the repository and checkout the branch. -git config user.email "gvisor-bot@google.com" -git config user.name "gVisor bot" -git fetch origin "${go_branch}" -git checkout -b go "${go_branch}" - -# Start working on a merge commit that combines the previous history with the -# current history. Note that we don't actually want any changes yet. -# -# N.B. The git behavior changed at some point and the relevant flag was added -# to allow for override, so try the only behavior first then pass the flag. -git merge --no-commit --strategy ours "${head}" || \ - git merge --allow-unrelated-histories --no-commit --strategy ours "${head}" - -# Normalize the permissions on the old branch. Note that they should be -# normalized if constructed by this tool, but we do so before the rsync. -find . -type f -exec chmod 0644 {} \; -find . -type d -exec chmod 0755 {} \; - -# Sync the entire gopath. Note that we exclude auto-generated source files that -# will change here. Otherwise, it adds a tremendous amount of noise to commits. -# If this file disappears in the future, then presumably we will still delete -# the underlying directory. -declare -r gopath="${go_merged}/src/${module}" -rsync --recursive --delete \ - --exclude .git \ - --exclude webhook/pkg/injector/certs.go \ - "${gopath}/" . - -# Add additional files. -for file in "${othersrc[@]}"; do - cp "${origpwd}"/"${file}" . -done - -# Construct a new README.md. -cat > README.md <<EOF -# gVisor - -This branch is a synthetic branch, containing only Go sources, that is -compatible with standard Go tools. See the master branch for authoritative -sources and tests. -EOF - -# There are a few solitary files that can get left behind due to the way bazel -# constructs the gopath target. Note that we don't find all Go files here -# because they may correspond to unused templates, etc. -declare -ar binaries=( "runsc" "shim" "webhook" ) -for target in "${binaries[@]}"; do - mkdir -p "${target}" - cp "${repo_orig}/${target}"/*.go "${target}/" -done - -# Normalize all permissions. The way bazel constructs the :gopath tree may leave -# some strange permissions on files. We don't have anything in this tree that -# should be execution, only the Go source files, README.md, and ${othersrc}. -find . -type f -exec chmod 0644 {} \; -find . -type d -exec chmod 0755 {} \; - -# Update the current working set and commit. -# If the current working commit has already been committed to the remote go -# branch, then we have nothing to commit here. So allow empty commit. This can -# occur when this script is run parallely (via pull_request and push events) -# and the push workflow finishes before the pull_request workflow can run this. -git add --all && git commit --allow-empty -m "Merge ${head} (automated)" - -# Push the branch back to the original repository. -git remote add orig "${repo_orig}" && git push -f orig go:go |