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// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package build
import (
"flag"
"fmt"
"os"
"strconv"
"strings"
"time"
)
var (
// These flags override values in build env.
GitCommitFlag = flag.String("git-commit", "", `Overrides git commit hash embedded into executables`)
GitBranchFlag = flag.String("git-branch", "", `Overrides git branch being built`)
GitTagFlag = flag.String("git-tag", "", `Overrides git tag being built`)
BuildnumFlag = flag.String("buildnum", "", `Overrides CI build number`)
PullRequestFlag = flag.Bool("pull-request", false, `Overrides pull request status of the build`)
CronJobFlag = flag.Bool("cron-job", false, `Overrides cron job status of the build`)
)
// Environment contains metadata provided by the build environment.
type Environment struct {
Name string // name of the environment
Repo string // name of GitHub repo
Commit, Date, Branch, Tag string // Git info
Buildnum string
IsPullRequest bool
IsCronJob bool
}
func (env Environment) String() string {
return fmt.Sprintf("%s env (commit:%s date:%s branch:%s tag:%s buildnum:%s pr:%t)",
env.Name, env.Commit, env.Date, env.Branch, env.Tag, env.Buildnum, env.IsPullRequest)
}
// Env returns metadata about the current CI environment, falling back to LocalEnv
// if not running on CI.
func Env() Environment {
switch {
case os.Getenv("CI") == "true" && os.Getenv("TRAVIS") == "true":
commit := os.Getenv("TRAVIS_PULL_REQUEST_SHA")
if commit == "" {
os.Getenv("TRAVIS_COMMIT")
}
return Environment{
Name: "travis",
Repo: os.Getenv("TRAVIS_REPO_SLUG"),
Commit: commit,
Date: getDate(commit),
Branch: os.Getenv("TRAVIS_BRANCH"),
Tag: os.Getenv("TRAVIS_TAG"),
Buildnum: os.Getenv("TRAVIS_BUILD_NUMBER"),
IsPullRequest: os.Getenv("TRAVIS_PULL_REQUEST") != "false",
IsCronJob: os.Getenv("TRAVIS_EVENT_TYPE") == "cron",
}
case os.Getenv("CI") == "True" && os.Getenv("APPVEYOR") == "True":
commit := os.Getenv("APPVEYOR_PULL_REQUEST_HEAD_COMMIT")
if commit == "" {
os.Getenv("APPVEYOR_REPO_COMMIT")
}
return Environment{
Name: "appveyor",
Repo: os.Getenv("APPVEYOR_REPO_NAME"),
Commit: commit,
Date: getDate(commit),
Branch: os.Getenv("APPVEYOR_REPO_BRANCH"),
Tag: os.Getenv("APPVEYOR_REPO_TAG_NAME"),
Buildnum: os.Getenv("APPVEYOR_BUILD_NUMBER"),
IsPullRequest: os.Getenv("APPVEYOR_PULL_REQUEST_NUMBER") != "",
IsCronJob: os.Getenv("APPVEYOR_SCHEDULED_BUILD") == "True",
}
default:
return LocalEnv()
}
}
// LocalEnv returns build environment metadata gathered from git.
func LocalEnv() Environment {
env := applyEnvFlags(Environment{Name: "local", Repo: "ethereum/go-ethereum"})
head := readGitFile("HEAD")
if fields := strings.Fields(head); len(fields) == 2 {
head = fields[1]
} else {
return env
}
if env.Commit == "" {
env.Commit = readGitFile(head)
}
env.Date = getDate(env.Commit)
if env.Branch == "" {
if head != "HEAD" {
env.Branch = strings.TrimPrefix(head, "refs/heads/")
}
}
if info, err := os.Stat(".git/objects"); err == nil && info.IsDir() && env.Tag == "" {
env.Tag = firstLine(RunGit("tag", "-l", "--points-at", "HEAD"))
}
return env
}
func firstLine(s string) string {
return strings.Split(s, "\n")[0]
}
func getDate(commit string) string {
if commit == "" {
return ""
}
out := RunGit("show", "-s", "--format=%ct", commit)
if out == "" {
return ""
}
date, err := strconv.ParseInt(strings.TrimSpace(out), 10, 64)
if err != nil {
panic(fmt.Sprintf("failed to parse git commit date: %v", err))
}
return time.Unix(date, 0).Format("20060102")
}
func applyEnvFlags(env Environment) Environment {
if !flag.Parsed() {
panic("you need to call flag.Parse before Env or LocalEnv")
}
if *GitCommitFlag != "" {
env.Commit = *GitCommitFlag
}
if *GitBranchFlag != "" {
env.Branch = *GitBranchFlag
}
if *GitTagFlag != "" {
env.Tag = *GitTagFlag
}
if *BuildnumFlag != "" {
env.Buildnum = *BuildnumFlag
}
if *PullRequestFlag {
env.IsPullRequest = true
}
if *CronJobFlag {
env.IsCronJob = true
}
return env
}
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