checkout/src/git-source-provider.ts
Johannes Schindelin d106d4669b
Add support for sparse checkouts (#1369)
* Add support for sparse checkouts

* sparse-checkout: optionally turn off cone mode

While it _is_ true that cone mode is the default nowadays (mainly for
performance reasons: code mode is much faster than non-cone mode), there
_are_ legitimate use cases where non-cone mode is really useful.

Let's add a flag to optionally disable cone mode.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

* Verify minimum Git version for sparse checkout

The `git sparse-checkout` command is available only since Git version
v2.25.0. The `actions/checkout` Action actually supports older Git
versions than that; As of time of writing, the minimum version is
v2.18.0.

Instead of raising this minimum version even for users who do not
require a sparse checkout, only check for this minimum version
specifically when a sparse checkout was asked for.

Suggested-by: Tingluo Huang <tingluohuang@github.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

* Support sparse checkout/LFS better

Instead of fetching all the LFS objects present in the current revision
in a sparse checkout, whether they are needed inside the sparse cone or
not, let's instead only pull the ones that are actually needed.

To do that, let's avoid running that preemptive `git lfs fetch` call in
case of a sparse checkout.

An alternative that was considered during the development of this patch
(and ultimately rejected) was to use `git lfs pull --include <path>...`,
but it turned out to be too inflexible because it requires exact paths,
not the patterns that are available via the sparse checkout definition,
and that risks running into command-line length limitations.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

---------

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Co-authored-by: Daniel <daniel.fernandez@feverup.com>
2023-06-09 09:08:21 -04:00

332 lines
10 KiB
TypeScript

import * as core from '@actions/core'
import * as fsHelper from './fs-helper'
import * as gitAuthHelper from './git-auth-helper'
import * as gitCommandManager from './git-command-manager'
import * as gitDirectoryHelper from './git-directory-helper'
import * as githubApiHelper from './github-api-helper'
import * as io from '@actions/io'
import * as path from 'path'
import * as refHelper from './ref-helper'
import * as stateHelper from './state-helper'
import * as urlHelper from './url-helper'
import {IGitCommandManager} from './git-command-manager'
import {IGitSourceSettings} from './git-source-settings'
export async function getSource(settings: IGitSourceSettings): Promise<void> {
// Repository URL
core.info(
`Syncing repository: ${settings.repositoryOwner}/${settings.repositoryName}`
)
const repositoryUrl = urlHelper.getFetchUrl(settings)
// Remove conflicting file path
if (fsHelper.fileExistsSync(settings.repositoryPath)) {
await io.rmRF(settings.repositoryPath)
}
// Create directory
let isExisting = true
if (!fsHelper.directoryExistsSync(settings.repositoryPath)) {
isExisting = false
await io.mkdirP(settings.repositoryPath)
}
// Git command manager
core.startGroup('Getting Git version info')
const git = await getGitCommandManager(settings)
core.endGroup()
let authHelper: gitAuthHelper.IGitAuthHelper | null = null
try {
if (git) {
authHelper = gitAuthHelper.createAuthHelper(git, settings)
if (settings.setSafeDirectory) {
// Setup the repository path as a safe directory, so if we pass this into a container job with a different user it doesn't fail
// Otherwise all git commands we run in a container fail
await authHelper.configureTempGlobalConfig()
core.info(
`Adding repository directory to the temporary git global config as a safe directory`
)
await git
.config('safe.directory', settings.repositoryPath, true, true)
.catch(error => {
core.info(
`Failed to initialize safe directory with error: ${error}`
)
})
stateHelper.setSafeDirectory()
}
}
// Prepare existing directory, otherwise recreate
if (isExisting) {
await gitDirectoryHelper.prepareExistingDirectory(
git,
settings.repositoryPath,
repositoryUrl,
settings.clean,
settings.ref
)
}
if (!git) {
// Downloading using REST API
core.info(`The repository will be downloaded using the GitHub REST API`)
core.info(
`To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH`
)
if (settings.submodules) {
throw new Error(
`Input 'submodules' not supported when falling back to download using the GitHub REST API. To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH.`
)
} else if (settings.sshKey) {
throw new Error(
`Input 'ssh-key' not supported when falling back to download using the GitHub REST API. To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH.`
)
}
await githubApiHelper.downloadRepository(
settings.authToken,
settings.repositoryOwner,
settings.repositoryName,
settings.ref,
settings.commit,
settings.repositoryPath,
settings.githubServerUrl
)
return
}
// Save state for POST action
stateHelper.setRepositoryPath(settings.repositoryPath)
// Initialize the repository
if (
!fsHelper.directoryExistsSync(path.join(settings.repositoryPath, '.git'))
) {
core.startGroup('Initializing the repository')
await git.init()
await git.remoteAdd('origin', repositoryUrl)
core.endGroup()
}
// Disable automatic garbage collection
core.startGroup('Disabling automatic garbage collection')
if (!(await git.tryDisableAutomaticGarbageCollection())) {
core.warning(
`Unable to turn off git automatic garbage collection. The git fetch operation may trigger garbage collection and cause a delay.`
)
}
core.endGroup()
// If we didn't initialize it above, do it now
if (!authHelper) {
authHelper = gitAuthHelper.createAuthHelper(git, settings)
}
// Configure auth
core.startGroup('Setting up auth')
await authHelper.configureAuth()
core.endGroup()
// Determine the default branch
if (!settings.ref && !settings.commit) {
core.startGroup('Determining the default branch')
if (settings.sshKey) {
settings.ref = await git.getDefaultBranch(repositoryUrl)
} else {
settings.ref = await githubApiHelper.getDefaultBranch(
settings.authToken,
settings.repositoryOwner,
settings.repositoryName,
settings.githubServerUrl
)
}
core.endGroup()
}
// LFS install
if (settings.lfs) {
await git.lfsInstall()
}
// Fetch
core.startGroup('Fetching the repository')
const fetchOptions: {filter?: string; fetchDepth?: number} = {}
if (settings.sparseCheckout) fetchOptions.filter = 'blob:none'
if (settings.fetchDepth <= 0) {
// Fetch all branches and tags
let refSpec = refHelper.getRefSpecForAllHistory(
settings.ref,
settings.commit
)
await git.fetch(refSpec, fetchOptions)
// When all history is fetched, the ref we're interested in may have moved to a different
// commit (push or force push). If so, fetch again with a targeted refspec.
if (!(await refHelper.testRef(git, settings.ref, settings.commit))) {
refSpec = refHelper.getRefSpec(settings.ref, settings.commit)
await git.fetch(refSpec, fetchOptions)
}
} else {
fetchOptions.fetchDepth = settings.fetchDepth
const refSpec = refHelper.getRefSpec(settings.ref, settings.commit)
await git.fetch(refSpec, fetchOptions)
}
core.endGroup()
// Checkout info
core.startGroup('Determining the checkout info')
const checkoutInfo = await refHelper.getCheckoutInfo(
git,
settings.ref,
settings.commit
)
core.endGroup()
// LFS fetch
// Explicit lfs-fetch to avoid slow checkout (fetches one lfs object at a time).
// Explicit lfs fetch will fetch lfs objects in parallel.
// For sparse checkouts, let `checkout` fetch the needed objects lazily.
if (settings.lfs && !settings.sparseCheckout) {
core.startGroup('Fetching LFS objects')
await git.lfsFetch(checkoutInfo.startPoint || checkoutInfo.ref)
core.endGroup()
}
// Sparse checkout
if (settings.sparseCheckout) {
core.startGroup('Setting up sparse checkout')
if (settings.sparseCheckoutConeMode) {
await git.sparseCheckout(settings.sparseCheckout)
} else {
await git.sparseCheckoutNonConeMode(settings.sparseCheckout)
}
core.endGroup()
}
// Checkout
core.startGroup('Checking out the ref')
await git.checkout(checkoutInfo.ref, checkoutInfo.startPoint)
core.endGroup()
// Submodules
if (settings.submodules) {
// Temporarily override global config
core.startGroup('Setting up auth for fetching submodules')
await authHelper.configureGlobalAuth()
core.endGroup()
// Checkout submodules
core.startGroup('Fetching submodules')
await git.submoduleSync(settings.nestedSubmodules)
await git.submoduleUpdate(settings.fetchDepth, settings.nestedSubmodules)
await git.submoduleForeach(
'git config --local gc.auto 0',
settings.nestedSubmodules
)
core.endGroup()
// Persist credentials
if (settings.persistCredentials) {
core.startGroup('Persisting credentials for submodules')
await authHelper.configureSubmoduleAuth()
core.endGroup()
}
}
// Get commit information
const commitInfo = await git.log1()
// Log commit sha
await git.log1("--format='%H'")
// Check for incorrect pull request merge commit
await refHelper.checkCommitInfo(
settings.authToken,
commitInfo,
settings.repositoryOwner,
settings.repositoryName,
settings.ref,
settings.commit,
settings.githubServerUrl
)
} finally {
// Remove auth
if (authHelper) {
if (!settings.persistCredentials) {
core.startGroup('Removing auth')
await authHelper.removeAuth()
core.endGroup()
}
authHelper.removeGlobalConfig()
}
}
}
export async function cleanup(repositoryPath: string): Promise<void> {
// Repo exists?
if (
!repositoryPath ||
!fsHelper.fileExistsSync(path.join(repositoryPath, '.git', 'config'))
) {
return
}
let git: IGitCommandManager
try {
git = await gitCommandManager.createCommandManager(
repositoryPath,
false,
false
)
} catch {
return
}
// Remove auth
const authHelper = gitAuthHelper.createAuthHelper(git)
try {
if (stateHelper.PostSetSafeDirectory) {
// Setup the repository path as a safe directory, so if we pass this into a container job with a different user it doesn't fail
// Otherwise all git commands we run in a container fail
await authHelper.configureTempGlobalConfig()
core.info(
`Adding repository directory to the temporary git global config as a safe directory`
)
await git
.config('safe.directory', repositoryPath, true, true)
.catch(error => {
core.info(`Failed to initialize safe directory with error: ${error}`)
})
}
await authHelper.removeAuth()
} finally {
await authHelper.removeGlobalConfig()
}
}
async function getGitCommandManager(
settings: IGitSourceSettings
): Promise<IGitCommandManager | undefined> {
core.info(`Working directory is '${settings.repositoryPath}'`)
try {
return await gitCommandManager.createCommandManager(
settings.repositoryPath,
settings.lfs,
settings.sparseCheckout != null
)
} catch (err) {
// Git is required for LFS
if (settings.lfs) {
throw err
}
// Otherwise fallback to REST API
return undefined
}
}