mirror of
https://github.com/vmware-tanzu/velero.git
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c8f4b60b5b
* Add release tools Signed-off-by: Nolan Brubaker <brubakern@vmware.com> * Document the tag-release release tool Signed-off-by: Nolan Brubaker <brubakern@vmware.com> * Make sure the upstream used is correct Signed-off-by: Nolan Brubaker <brubakern@vmware.com> * Add copyright statement Signed-off-by: Nolan Brubaker <brubakern@vmware.com> * Address review feedback * Pause to allow for cherry-picking on the release branch before pushing it * Move master branch logic into an else statement * Correct typo Signed-off-by: Nolan Brubaker <brubakern@vmware.com> * Uncomment check for dirty git working tree Signed-off-by: Nolan Brubaker <brubakern@vmware.com>
76 lines
2.7 KiB
Go
76 lines
2.7 KiB
Go
/*
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Copyright 2020 the Velero contributors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package main
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import (
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"fmt"
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"os"
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"regexp"
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)
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// This regex should match both our GA format (example: v1.4.3) and pre-release format (v1.2.4-beta.2)
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// The following sub-capture groups are defined:
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// major
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// minor
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// patch
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// prerelease (this will be alpha/beta followed by a ".", followed by 1 or more digits (alpha.5)
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var release_regex *regexp.Regexp = regexp.MustCompile("^v(?P<major>[[:digit:]]+)\\.(?P<minor>[[:digit:]]+)\\.(?P<patch>[[:digit:]]+)(-{1}(?P<prerelease>(alpha|beta)\\.[[:digit:]]+))*")
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// This small program exists because checking the VELERO_VERSION rules in bash is difficult, and difficult to test for correctness.
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// Calling it with --verify will verify whether or not the VELERO_VERSION environment variable is a valid version string, without parsing for its components.
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// Calling it without --verify will try to parse the version into its component pieces.
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func main() {
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velero_version := os.Getenv("VELERO_VERSION")
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submatches := reSubMatchMap(release_regex, velero_version)
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// Didn't match the regex, exit.
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if len(submatches) == 0 {
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fmt.Printf("VELERO_VERSION of %s was not valid. Please correct the value and retry.", velero_version)
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os.Exit(1)
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}
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if len(os.Args) > 1 && os.Args[1] == "--verify" {
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os.Exit(0)
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}
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// Send these in a bash variable format to stdout, so that they can be consumed by bash scripts that call the go program.
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fmt.Printf("VELERO_MAJOR=%s\n", submatches["major"])
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fmt.Printf("VELERO_MINOR=%s\n", submatches["minor"])
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fmt.Printf("VELERO_PATCH=%s\n", submatches["patch"])
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fmt.Printf("VELERO_PRERELEASE=%s\n", submatches["prerelease"])
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}
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// reSubMatchMap returns a map with the named submatches within a regular expression populated as keys, and their matched values within a given string as values.
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// If no matches are found, a nil map is returned
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func reSubMatchMap(r *regexp.Regexp, s string) map[string]string {
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match := r.FindStringSubmatch(s)
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submatches := make(map[string]string)
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if len(match) == 0 {
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return submatches
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}
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for i, name := range r.SubexpNames() {
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// 0 will always be empty from the return values of SubexpNames's documentation, so skip it.
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if i != 0 {
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submatches[name] = match[i]
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}
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}
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return submatches
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}
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