mirror of
https://github.com/flatcar/scripts.git
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241 lines
7.3 KiB
Bash
241 lines
7.3 KiB
Bash
# Copyright (c) 2021 The Flatcar Maintainers.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# This file contains common functions used across SDK container scripts.
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#
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# globals
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#
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sdk_container_common_versionfile="sdk_container/.repo/manifests/version.txt"
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sdk_container_common_registry="ghcr.io/flatcar-linux"
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sdk_container_common_env_file="sdk_container/.sdkenv"
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# Common "echo" function
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function yell() {
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echo -e "\n###### $@ ######"
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}
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# --
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# Guess the SDK version from the current git commit.
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#
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function get_git_version() {
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local tag="$(git tag --points-at HEAD)"
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if [ -z "$tag" ] ; then
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git describe --tags
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else
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echo "$tag"
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fi
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}
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# --
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function get_sdk_version_from_versionfile() {
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( source "$sdk_container_common_versionfile"; echo "$FLATCAR_SDK_VERSION"; )
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}
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# --
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# return true if a given version number is an official build
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#
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function is_official() {
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local vernum="$1"
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local official="$(echo "$vernum" | sed -n 's/^[0-9]\+\.[0-9]\+\.[0-9]\+$/true/p')"
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test -n "$official"
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}
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# --
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# extract the build ID suffix from a version string ("alpha-3244.0.1-nightly2" => "nightly2")
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#
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function build_id_from_version() {
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local version="$1"
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# support vernums and versions ("alpha-"... is optional)
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echo "${version}" | sed -n 's/^\([a-z]\+-\)\?[0-9.]\+[-+]\(.*\)$/\2/p'
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}
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# --
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# extract the version number (w/o build ID) from a version string ("alpha-3244.0.1-nightly2" => "3244.0.1")
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#
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function vernum_from_version() {
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local version="$1"
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# support vernums and versions ("alpha-"... is optional)
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echo "${version}" | sed -n 's/^\([a-z]\+-\)\?\([0-9.]\+\).*/\2/p'
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}
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# --
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# Strip prefix from version string if present ("alpha-3233.0.0[-...]" => "3233.0.0[-...]")
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# and add a "+[build suffix]" if this is a non-official build. The "+" matches the version
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# string generation in the build scripts.
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function strip_version_prefix() {
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local version="$1"
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local build_id="$(build_id_from_version "${version}")"
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local version_id="$(vernum_from_version "${version}")"
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if [ -n "${build_id}" ] ; then
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echo "${version_id}+${build_id}"
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else
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echo "${version_id}"
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fi
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}
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# --
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# Derive docker-safe image version string from vernum.
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#
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function vernum_to_docker_image_version() {
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local vernum="$1"
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echo "$vernum" | sed 's/[+]/-/g'
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}
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# --
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# Creates the Flatcar build / SDK version file.
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# Must be called from the script root.
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#
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# In the versionfile, FLATCAR_VERSION is the OS image version _number_ plus a build ID if this is no
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# official build. The FLATCAR_VERSION_ID is the plain vernum w/o build ID - it's the same as FLATCAR_VERSION
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# for official builds. The FLATCAR_BUILD_ID is the build ID suffix for non-official builds.
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# Lastly, the FLATCAR_SDK_VERSION is the full version number (including build ID if no official SDK release)
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# the OS image is to be built with.
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#
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function create_versionfile() {
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local sdk_version="$1"
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local os_version="${2:-$sdk_version}"
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local build_id="$(build_id_from_version "${os_version}")"
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local version_id="$(vernum_from_version "${os_version}")"
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sdk_version="$(strip_version_prefix "${sdk_version}")"
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os_version="$(strip_version_prefix "${os_version}")"
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yell "Writing versionfile '$sdk_container_common_versionfile' to SDK '$sdk_version', OS '$os_version'."
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cat >"$sdk_container_common_versionfile" <<EOF
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FLATCAR_VERSION=${os_version}
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FLATCAR_VERSION_ID=${version_id}
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FLATCAR_BUILD_ID="${build_id}"
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FLATCAR_SDK_VERSION=${sdk_version}
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EOF
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}
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# --
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#
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# Set up SDK environment variables.
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# Environment vars are put in a file that is sourced by the container's
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# .bashrc (if present). GNUPGHOME and SSH_AUTH_SOCK are set
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# to container-specific paths if applicable.
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function setup_sdk_env() {
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local var
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rm -f "$sdk_container_common_env_file"
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# conditionally set up gnupg, ssh socket, and gcloud auth / boto
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# depending on availability on the host
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GNUPGHOME="${GNUPGHOME:-$HOME/.gnupg}"
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if [ -d "${GNUPGHOME}" ] ; then
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echo "GNUPGHOME=\"/home/sdk/.gnupg\"" >> "$sdk_container_common_env_file"
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echo "export GNUPGHOME" >> "$sdk_container_common_env_file"
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export GNUPGHOME
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fi
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if [ -e "${SSH_AUTH_SOCK:-}" ] ; then
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local sockname="$(basename "${SSH_AUTH_SOCK}")"
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echo "SSH_AUTH_SOCK=\"/run/sdk/ssh/$sockname\"" >> "$sdk_container_common_env_file"
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echo "export SSH_AUTH_SOCK" >> "$sdk_container_common_env_file"
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fi
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# keep in sync with 90_env_keep
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for var in FLATCAR_BUILD_ID COREOS_OFFICIAL \
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EMAIL GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME \
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GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME \
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GIT_PROXY_COMMAND GIT_SSH RSYNC_PROXY \
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GPG_AGENT_INFO FORCE_STAGES \
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all_proxy ftp_proxy http_proxy https_proxy no_proxy; do
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if [ -n "${!var:-}" ] ; then
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echo "${var}=\"${!var}\"" >> "$sdk_container_common_env_file"
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echo "export ${var}" >> "$sdk_container_common_env_file"
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fi
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done
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}
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# --
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# Set up gcloud legacy creds (via GOOGLE_APPLICATION_CREDENTIALS)
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# for the SDK container.
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# This will also create a boto config right next to the
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# GOOGLE_APPLICATION_CREDENTIALS json file.
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function setup_gsutil() {
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local creds="${GOOGLE_APPLICATION_CREDENTIALS:-$HOME/.config/gcloud/application_default_credentials.json}"
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if [ ! -e "$creds" ]; then
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return
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fi
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local creds_dir="$(dirname "$creds")"
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local botofile="$creds_dir/boto-flatcar-sdk"
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# TODO t-lo: move generation of boto file to sdk_entry so
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# it's only created inside the container.
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# read creds file and create boto file for gsutil
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local tmp="$(mktemp)"
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trap "rm -f '$tmp'" EXIT
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local oauth_refresh="$(jq -r '.refresh_token' "$creds")"
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local client_id="$(jq -r '.client_id' "$creds")"
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local client_secret="$(jq -r '.client_secret' "$creds")"
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cat >>"$tmp" <<EOF
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[Credentials]
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gs_oauth2_refresh_token = $oauth_refresh
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[OAuth2]
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client_id = $client_id
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client_secret = $client_secret
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EOF
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mv "$tmp" "$botofile"
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echo "BOTO_PATH=\"$botofile\"" >> "$sdk_container_common_env_file"
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echo "export BOTO_PATH" >> "$sdk_container_common_env_file"
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echo "GOOGLE_APPLICATION_CREDENTIALS=\"$creds\"" >> "$sdk_container_common_env_file"
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echo "export GOOGLE_APPLICATION_CREDENTIALS" >> "$sdk_container_common_env_file"
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BOTO_PATH="$botofile"
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GOOGLE_APPLICATION_CREDENTIALS="$creds"
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export BOTO_PATH
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export GOOGLE_APPLICATION_CREDENTIALS
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}
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# --
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# Generate volume mount command line options for docker
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# to pass gpg, ssh, and gcloud auth host directories
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# into the SDK container.
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function gnupg_ssh_gcloud_mount_opts() {
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local sdk_gnupg_home="/home/sdk/.gnupg"
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local gpgagent_dir="/run/user/$(id -u)/gnupg"
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# pass host GPG home and Agent directories to container
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if [ -d "$GNUPGHOME" ] ; then
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echo "-v $GNUPGHOME:$sdk_gnupg_home"
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fi
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if [ -d "$gpgagent_dir" ] ; then
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echo "-v $gpgagent_dir:$gpgagent_dir"
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fi
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if [ -e "${SSH_AUTH_SOCK:-}" ] ; then
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local sshsockdir="$(dirname "$SSH_AUTH_SOCK")"
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echo "-v $sshsockdir:/run/sdk/ssh"
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fi
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if [ -e "${GOOGLE_APPLICATION_CREDENTIALS:-}" ] ; then
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local creds_dir="$(dirname "${GOOGLE_APPLICATION_CREDENTIALS}")"
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if [ -d "$creds_dir" ] ; then
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echo "-v $creds_dir:$creds_dir"
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fi
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fi
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}
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