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toolkit/packages/cache/src/internal/tar.ts

295 lines
8.6 KiB
TypeScript

import {exec} from '@actions/exec'
import * as io from '@actions/io'
import {existsSync, writeFileSync} from 'fs'
import * as path from 'path'
import * as utils from './cacheUtils'
import {ArchiveTool} from './contracts'
import {
CompressionMethod,
SystemTarPathOnWindows,
ArchiveToolType,
TarFilename,
ManifestFilename
} from './constants'
const IS_WINDOWS = process.platform === 'win32'
// Returns tar path and type: BSD or GNU
async function getTarPath(): Promise<ArchiveTool> {
switch (process.platform) {
case 'win32': {
const gnuTar = await utils.getGnuTarPathOnWindows()
const systemTar = SystemTarPathOnWindows
if (gnuTar) {
// Use GNUtar as default on windows
return <ArchiveTool>{path: gnuTar, type: ArchiveToolType.GNU}
} else if (existsSync(systemTar)) {
return <ArchiveTool>{path: systemTar, type: ArchiveToolType.BSD}
}
break
}
case 'darwin': {
const gnuTar = await io.which('gtar', false)
if (gnuTar) {
// fix permission denied errors when extracting BSD tar archive with GNU tar - https://github.com/actions/cache/issues/527
return <ArchiveTool>{path: gnuTar, type: ArchiveToolType.GNU}
} else {
return <ArchiveTool>{
path: await io.which('tar', true),
type: ArchiveToolType.BSD
}
}
}
default:
break
}
// Default assumption is GNU tar is present in path
return <ArchiveTool>{
path: await io.which('tar', true),
type: ArchiveToolType.GNU
}
}
// Return arguments for tar as per tarPath, compressionMethod, method type and os
async function getTarArgs(
tarPath: ArchiveTool,
compressionMethod: CompressionMethod,
type: string,
archivePath = ''
): Promise<string[]> {
const args = [`"${tarPath.path}"`]
const cacheFileName = utils.getCacheFileName(compressionMethod)
const tarFile = 'cache.tar'
const workingDirectory = getWorkingDirectory()
// Speficic args for BSD tar on windows for workaround
const BSD_TAR_ZSTD =
tarPath.type === ArchiveToolType.BSD &&
compressionMethod !== CompressionMethod.Gzip &&
IS_WINDOWS
// Method specific args
switch (type) {
case 'create':
args.push(
'--posix',
'-cf',
BSD_TAR_ZSTD
? tarFile
: cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
'--exclude',
BSD_TAR_ZSTD
? tarFile
: cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
'-P',
'-C',
workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
'--files-from',
ManifestFilename
)
break
case 'extract':
args.push(
'-xf',
BSD_TAR_ZSTD
? tarFile
: archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
'-P',
'-C',
workingDirectory.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
)
break
case 'list':
args.push(
'-tf',
BSD_TAR_ZSTD
? tarFile
: archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
'-P'
)
break
}
// Platform specific args
if (tarPath.type === ArchiveToolType.GNU) {
switch (process.platform) {
case 'win32':
args.push('--force-local')
break
case 'darwin':
args.push('--delay-directory-restore')
break
}
}
return args
}
// Returns commands to run tar and compression program
async function getCommands(
compressionMethod: CompressionMethod,
type: string,
archivePath = ''
): Promise<string[]> {
let args
const tarPath = await getTarPath()
const tarArgs = await getTarArgs(
tarPath,
compressionMethod,
type,
archivePath
)
const compressionArgs =
type !== 'create'
? await getDecompressionProgram(tarPath, compressionMethod, archivePath)
: await getCompressionProgram(tarPath, compressionMethod)
const BSD_TAR_ZSTD =
tarPath.type === ArchiveToolType.BSD &&
compressionMethod !== CompressionMethod.Gzip &&
IS_WINDOWS
if (BSD_TAR_ZSTD && type !== 'create') {
args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')]
} else {
args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')]
}
if (BSD_TAR_ZSTD) {
return args
}
return [args.join(' ')]
}
function getWorkingDirectory(): string {
return process.env['GITHUB_WORKSPACE'] ?? process.cwd()
}
// Common function for extractTar and listTar to get the compression method
async function getDecompressionProgram(
tarPath: ArchiveTool,
compressionMethod: CompressionMethod,
archivePath: string
): Promise<string[]> {
// -d: Decompress.
// unzstd is equivalent to 'zstd -d'
// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
// Using 30 here because we also support 32-bit self-hosted runners.
const BSD_TAR_ZSTD =
tarPath.type === ArchiveToolType.BSD &&
compressionMethod !== CompressionMethod.Gzip &&
IS_WINDOWS
switch (compressionMethod) {
case CompressionMethod.Zstd:
return BSD_TAR_ZSTD
? [
'zstd -d --long=30 --force -o',
TarFilename,
archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
]
: [
'--use-compress-program',
IS_WINDOWS ? '"zstd -d --long=30"' : 'unzstd --long=30'
]
case CompressionMethod.ZstdWithoutLong:
return BSD_TAR_ZSTD
? [
'zstd -d --force -o',
TarFilename,
archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
]
: ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd']
default:
return ['-z']
}
}
// Used for creating the archive
// -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
// zstdmt is equivalent to 'zstd -T0'
// --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
// Using 30 here because we also support 32-bit self-hosted runners.
// Long range mode is added to zstd in v1.3.2 release, so we will not use --long in older version of zstd.
async function getCompressionProgram(
tarPath: ArchiveTool,
compressionMethod: CompressionMethod
): Promise<string[]> {
const cacheFileName = utils.getCacheFileName(compressionMethod)
const BSD_TAR_ZSTD =
tarPath.type === ArchiveToolType.BSD &&
compressionMethod !== CompressionMethod.Gzip &&
IS_WINDOWS
switch (compressionMethod) {
case CompressionMethod.Zstd:
return BSD_TAR_ZSTD
? [
'zstd -T0 --long=30 --force -o',
cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
TarFilename
]
: [
'--use-compress-program',
IS_WINDOWS ? '"zstd -T0 --long=30"' : 'zstdmt --long=30'
]
case CompressionMethod.ZstdWithoutLong:
return BSD_TAR_ZSTD
? [
'zstd -T0 --force -o',
cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
TarFilename
]
: ['--use-compress-program', IS_WINDOWS ? '"zstd -T0"' : 'zstdmt']
default:
return ['-z']
}
}
// Executes all commands as separate processes
async function execCommands(commands: string[], cwd?: string): Promise<void> {
for (const command of commands) {
try {
await exec(command, undefined, {cwd})
} catch (error) {
throw new Error(
`${command.split(' ')[0]} failed with error: ${error?.message}`
)
}
}
}
// List the contents of a tar
export async function listTar(
archivePath: string,
compressionMethod: CompressionMethod
): Promise<void> {
const commands = await getCommands(compressionMethod, 'list', archivePath)
await execCommands(commands)
}
// Extract a tar
export async function extractTar(
archivePath: string,
compressionMethod: CompressionMethod
): Promise<void> {
// Create directory to extract tar into
const workingDirectory = getWorkingDirectory()
await io.mkdirP(workingDirectory)
const commands = await getCommands(compressionMethod, 'extract', archivePath)
await execCommands(commands)
}
// Create a tar
export async function createTar(
archiveFolder: string,
sourceDirectories: string[],
compressionMethod: CompressionMethod
): Promise<void> {
// Write source directories to manifest.txt to avoid command length limits
writeFileSync(
path.join(archiveFolder, ManifestFilename),
sourceDirectories.join('\n')
)
const commands = await getCommands(compressionMethod, 'create')
await execCommands(commands, archiveFolder)
}