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checkout/src/git-command-manager.ts

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import * as core from '@actions/core'
import * as exec from '@actions/exec'
import * as fshelper from './fs-helper'
import * as io from '@actions/io'
import * as path from 'path'
import * as retryHelper from './retry-helper'
import {GitVersion} from './git-version'
// Auth header not supported before 2.9
// Wire protocol v2 not supported before 2.18
export const MinimumGitVersion = new GitVersion('2.18')
export interface IGitCommandManager {
branchDelete(remote: boolean, branch: string): Promise<void>
branchExists(remote: boolean, pattern: string): Promise<boolean>
branchList(remote: boolean): Promise<string[]>
checkout(ref: string, startPoint: string): Promise<void>
checkoutDetach(): Promise<void>
config(configKey: string, configValue: string): Promise<void>
configExists(configKey: string): Promise<boolean>
fetch(fetchDepth: number, refSpec: string[]): Promise<void>
getWorkingDirectory(): string
init(): Promise<void>
isDetached(): Promise<boolean>
lfsFetch(ref: string): Promise<void>
lfsInstall(): Promise<void>
log1(): Promise<void>
remoteAdd(remoteName: string, remoteUrl: string): Promise<void>
tagExists(pattern: string): Promise<boolean>
tryClean(): Promise<boolean>
tryConfigUnset(configKey: string): Promise<boolean>
tryDisableAutomaticGarbageCollection(): Promise<boolean>
tryGetFetchUrl(): Promise<string>
tryReset(): Promise<boolean>
}
export async function CreateCommandManager(
workingDirectory: string,
lfs: boolean
): Promise<IGitCommandManager> {
return await GitCommandManager.createCommandManager(workingDirectory, lfs)
}
class GitCommandManager {
private gitEnv = {
GIT_TERMINAL_PROMPT: '0', // Disable git prompt
GCM_INTERACTIVE: 'Never' // Disable prompting for git credential manager
}
private gitPath = ''
private lfs = false
private workingDirectory = ''
// Private constructor; use createCommandManager()
private constructor() {}
async branchDelete(remote: boolean, branch: string): Promise<void> {
const args = ['branch', '--delete', '--force']
if (remote) {
args.push('--remote')
}
args.push(branch)
await this.execGit(args)
}
async branchExists(remote: boolean, pattern: string): Promise<boolean> {
const args = ['branch', '--list']
if (remote) {
args.push('--remote')
}
args.push(pattern)
const output = await this.execGit(args)
return !!output.stdout.trim()
}
async branchList(remote: boolean): Promise<string[]> {
const result: string[] = []
// Note, this implementation uses "rev-parse --symbolic" because the output from
// "branch --list" is more difficult when in a detached HEAD state.
const args = ['rev-parse', '--symbolic']
if (remote) {
args.push('--remotes=origin')
} else {
args.push('--branches')
}
const output = await this.execGit(args)
for (let branch of output.stdout.trim().split('\n')) {
branch = branch.trim()
if (branch) {
result.push(branch)
}
}
return result
}
async checkout(ref: string, startPoint: string): Promise<void> {
const args = ['checkout', '--progress', '--force']
if (startPoint) {
args.push('-B', ref, startPoint)
} else {
args.push(ref)
}
await this.execGit(args)
}
async checkoutDetach(): Promise<void> {
const args = ['checkout', '--detach']
await this.execGit(args)
}
async config(configKey: string, configValue: string): Promise<void> {
await this.execGit(['config', configKey, configValue])
}
async configExists(configKey: string): Promise<boolean> {
const pattern = configKey.replace(/[^a-zA-Z0-9_]/g, x => {
return `\\${x}`
})
const output = await this.execGit(
['config', '--name-only', '--get-regexp', pattern],
true
)
return output.exitCode === 0
}
async fetch(fetchDepth: number, refSpec: string[]): Promise<void> {
const args = [
'-c',
'protocol.version=2',
'fetch',
'--no-tags',
'--prune',
'--progress',
'--no-recurse-submodules'
]
if (fetchDepth > 0) {
args.push(`--depth=${fetchDepth}`)
} else if (
fshelper.fileExistsSync(
path.join(this.workingDirectory, '.git', 'shallow')
)
) {
args.push('--unshallow')
}
args.push('origin')
for (const arg of refSpec) {
args.push(arg)
}
const that = this
await retryHelper.execute(async () => {
await that.execGit(args)
})
}
getWorkingDirectory(): string {
return this.workingDirectory
}
async init(): Promise<void> {
await this.execGit(['init', this.workingDirectory])
}
async isDetached(): Promise<boolean> {
// Note, this implementation uses "branch --show-current" because
// "rev-parse --symbolic-full-name HEAD" can fail on a new repo
// with nothing checked out.
const output = await this.execGit(['branch', '--show-current'])
return output.stdout.trim() === ''
}
async lfsFetch(ref: string): Promise<void> {
const args = ['lfs', 'fetch', 'origin', ref]
const that = this
await retryHelper.execute(async () => {
await that.execGit(args)
})
}
async lfsInstall(): Promise<void> {
await this.execGit(['lfs', 'install', '--local'])
}
async log1(): Promise<void> {
await this.execGit(['log', '-1'])
}
async remoteAdd(remoteName: string, remoteUrl: string): Promise<void> {
await this.execGit(['remote', 'add', remoteName, remoteUrl])
}
async tagExists(pattern: string): Promise<boolean> {
const output = await this.execGit(['tag', '--list', pattern])
return !!output.stdout.trim()
}
async tryClean(): Promise<boolean> {
const output = await this.execGit(['clean', '-ffdx'], true)
return output.exitCode === 0
}
async tryConfigUnset(configKey: string): Promise<boolean> {
const output = await this.execGit(
['config', '--unset-all', configKey],
true
)
return output.exitCode === 0
}
async tryDisableAutomaticGarbageCollection(): Promise<boolean> {
const output = await this.execGit(['config', 'gc.auto', '0'], true)
return output.exitCode === 0
}
async tryGetFetchUrl(): Promise<string> {
const output = await this.execGit(
['config', '--get', 'remote.origin.url'],
true
)
if (output.exitCode !== 0) {
return ''
}
const stdout = output.stdout.trim()
if (stdout.includes('\n')) {
return ''
}
return stdout
}
async tryReset(): Promise<boolean> {
const output = await this.execGit(['reset', '--hard', 'HEAD'], true)
return output.exitCode === 0
}
static async createCommandManager(
workingDirectory: string,
lfs: boolean
): Promise<GitCommandManager> {
const result = new GitCommandManager()
await result.initializeCommandManager(workingDirectory, lfs)
return result
}
private async execGit(
args: string[],
allowAllExitCodes = false
): Promise<GitOutput> {
fshelper.directoryExistsSync(this.workingDirectory, true)
const result = new GitOutput()
const env = {}
for (const key of Object.keys(process.env)) {
env[key] = process.env[key]
}
for (const key of Object.keys(this.gitEnv)) {
env[key] = this.gitEnv[key]
}
const stdout: string[] = []
const options = {
cwd: this.workingDirectory,
env,
ignoreReturnCode: allowAllExitCodes,
listeners: {
stdout: (data: Buffer) => {
stdout.push(data.toString())
}
}
}
result.exitCode = await exec.exec(`"${this.gitPath}"`, args, options)
result.stdout = stdout.join('')
return result
}
private async initializeCommandManager(
workingDirectory: string,
lfs: boolean
): Promise<void> {
this.workingDirectory = workingDirectory
// Git-lfs will try to pull down assets if any of the local/user/system setting exist.
// If the user didn't enable `LFS` in their pipeline definition, disable LFS fetch/checkout.
this.lfs = lfs
if (!this.lfs) {
this.gitEnv['GIT_LFS_SKIP_SMUDGE'] = '1'
}
this.gitPath = await io.which('git', true)
// Git version
core.debug('Getting git version')
let gitVersion = new GitVersion()
let gitOutput = await this.execGit(['version'])
let stdout = gitOutput.stdout.trim()
if (!stdout.includes('\n')) {
const match = stdout.match(/\d+\.\d+(\.\d+)?/)
if (match) {
gitVersion = new GitVersion(match[0])
}
}
if (!gitVersion.isValid()) {
throw new Error('Unable to determine git version')
}
// Minimum git version
if (!gitVersion.checkMinimum(MinimumGitVersion)) {
throw new Error(
`Minimum required git version is ${MinimumGitVersion}. Your git ('${this.gitPath}') is ${gitVersion}`
)
}
if (this.lfs) {
// Git-lfs version
core.debug('Getting git-lfs version')
let gitLfsVersion = new GitVersion()
const gitLfsPath = await io.which('git-lfs', true)
gitOutput = await this.execGit(['lfs', 'version'])
stdout = gitOutput.stdout.trim()
if (!stdout.includes('\n')) {
const match = stdout.match(/\d+\.\d+(\.\d+)?/)
if (match) {
gitLfsVersion = new GitVersion(match[0])
}
}
if (!gitLfsVersion.isValid()) {
throw new Error('Unable to determine git-lfs version')
}
// Minimum git-lfs version
// Note:
// - Auth header not supported before 2.1
const minimumGitLfsVersion = new GitVersion('2.1')
if (!gitLfsVersion.checkMinimum(minimumGitLfsVersion)) {
throw new Error(
`Minimum required git-lfs version is ${minimumGitLfsVersion}. Your git-lfs ('${gitLfsPath}') is ${gitLfsVersion}`
)
}
}
// Set the user agent
const gitHttpUserAgent = `git/${gitVersion} (github-actions-checkout)`
core.debug(`Set git useragent to: ${gitHttpUserAgent}`)
this.gitEnv['GIT_HTTP_USER_AGENT'] = gitHttpUserAgent
}
}
class GitOutput {
stdout = ''
exitCode = 0
}