148 lines
5.5 KiB
Bash
148 lines
5.5 KiB
Bash
#!/bin/bash
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# Copyright 2014 The Kubernetes 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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# -----------------------------------------------------------------------------
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# Version management helpers. These functions help to set, save and load the
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# following variables:
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#
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# KUBE_GIT_COMMIT - The git commit id corresponding to this
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# source code.
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# KUBE_GIT_TREE_STATE - "clean" indicates no changes since the git commit id
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# "dirty" indicates source code changes after the git commit id
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# KUBE_GIT_VERSION - "vX.Y" used to indicate the last release version.
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# KUBE_GIT_MAJOR - The major part of the version
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# KUBE_GIT_MINOR - The minor component of the version
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# Grovels through git to set a set of env variables.
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#
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# If KUBE_GIT_VERSION_FILE, this function will load from that file instead of
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# querying git.
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kube::version::get_version_vars() {
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if [[ -n ${KUBE_GIT_VERSION_FILE-} ]]; then
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kube::version::load_version_vars "${KUBE_GIT_VERSION_FILE}"
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return
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fi
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local git=(git --work-tree "${KUBE_ROOT}")
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if [[ -n ${KUBE_GIT_COMMIT-} ]] || KUBE_GIT_COMMIT=$("${git[@]}" rev-parse "HEAD^{commit}" 2>/dev/null); then
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if [[ -z ${KUBE_GIT_TREE_STATE-} ]]; then
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# Check if the tree is dirty. default to dirty
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if git_status=$("${git[@]}" status --porcelain 2>/dev/null) && [[ -z ${git_status} ]]; then
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KUBE_GIT_TREE_STATE="clean"
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else
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KUBE_GIT_TREE_STATE="dirty"
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fi
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fi
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# Use git describe to find the version based on annotated tags.
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if [[ -n ${KUBE_GIT_VERSION-} ]] || KUBE_GIT_VERSION=$("${git[@]}" describe --tags --abbrev=14 "${KUBE_GIT_COMMIT}^{commit}" 2>/dev/null); then
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# This translates the "git describe" to an actual semver.org
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# compatible semantic version that looks something like this:
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# v1.1.0-alpha.0.6+84c76d1142ea4d
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#
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# TODO: We continue calling this "git version" because so many
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# downstream consumers are expecting it there.
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DASHES_IN_VERSION=$(echo "${KUBE_GIT_VERSION}" | sed "s/[^-]//g")
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if [[ "${DASHES_IN_VERSION}" == "---" ]] ; then
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# We have distance to subversion (v1.1.0-subversion-1-gCommitHash)
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KUBE_GIT_VERSION=$(echo "${KUBE_GIT_VERSION}" | sed "s/-\([0-9]\{1,\}\)-g\([0-9a-f]\{14\}\)$/.\1\+\2/")
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elif [[ "${DASHES_IN_VERSION}" == "--" ]] ; then
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# We have distance to base tag (v1.1.0-1-gCommitHash)
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KUBE_GIT_VERSION=$(echo "${KUBE_GIT_VERSION}" | sed "s/-g\([0-9a-f]\{14\}\)$/+\1/")
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fi
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if [[ "${KUBE_GIT_TREE_STATE}" == "dirty" ]]; then
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# git describe --dirty only considers changes to existing files, but
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# that is problematic since new untracked .go files affect the build,
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# so use our idea of "dirty" from git status instead.
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KUBE_GIT_VERSION+="-dirty"
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fi
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# Try to match the "git describe" output to a regex to try to extract
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# the "major" and "minor" versions and whether this is the exact tagged
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# version or whether the tree is between two tagged versions.
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if [[ "${KUBE_GIT_VERSION}" =~ ^v([0-9]+)\.([0-9]+)(\.[0-9]+)?([-].*)?$ ]]; then
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KUBE_GIT_MAJOR=${BASH_REMATCH[1]}
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KUBE_GIT_MINOR=${BASH_REMATCH[2]}
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if [[ -n "${BASH_REMATCH[4]}" ]]; then
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KUBE_GIT_MINOR+="+"
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fi
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fi
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fi
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fi
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}
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# Saves the environment flags to $1
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kube::version::save_version_vars() {
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local version_file=${1-}
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[[ -n ${version_file} ]] || {
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echo "!!! Internal error. No file specified in kube::version::save_version_vars"
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return 1
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}
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cat <<EOF >"${version_file}"
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KUBE_GIT_COMMIT='${KUBE_GIT_COMMIT-}'
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KUBE_GIT_TREE_STATE='${KUBE_GIT_TREE_STATE-}'
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KUBE_GIT_VERSION='${KUBE_GIT_VERSION-}'
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KUBE_GIT_MAJOR='${KUBE_GIT_MAJOR-}'
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KUBE_GIT_MINOR='${KUBE_GIT_MINOR-}'
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EOF
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}
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# Loads up the version variables from file $1
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kube::version::load_version_vars() {
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local version_file=${1-}
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[[ -n ${version_file} ]] || {
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echo "!!! Internal error. No file specified in kube::version::load_version_vars"
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return 1
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}
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source "${version_file}"
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}
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kube::version::ldflag() {
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local key=${1}
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local val=${2}
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echo "-X ${KUBE_GO_PACKAGE}/pkg/version.${key}=${val}"
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}
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# Prints the value that needs to be passed to the -ldflags parameter of go build
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# in order to set the Kubernetes based on the git tree status.
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kube::version::ldflags() {
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kube::version::get_version_vars
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local -a ldflags=($(kube::version::ldflag "buildDate" "$(date -u +'%Y-%m-%dT%H:%M:%SZ')"))
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if [[ -n ${KUBE_GIT_COMMIT-} ]]; then
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ldflags+=($(kube::version::ldflag "gitCommit" "${KUBE_GIT_COMMIT}"))
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ldflags+=($(kube::version::ldflag "gitTreeState" "${KUBE_GIT_TREE_STATE}"))
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fi
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if [[ -n ${KUBE_GIT_VERSION-} ]]; then
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ldflags+=($(kube::version::ldflag "gitVersion" "${KUBE_GIT_VERSION}"))
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fi
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if [[ -n ${KUBE_GIT_MAJOR-} && -n ${KUBE_GIT_MINOR-} ]]; then
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ldflags+=(
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$(kube::version::ldflag "gitMajor" "${KUBE_GIT_MAJOR}")
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$(kube::version::ldflag "gitMinor" "${KUBE_GIT_MINOR}")
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)
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fi
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# The -ldflags parameter takes a single string, so join the output.
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echo "${ldflags[*]-}"
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}
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