feat(cache): support passing extra tar options

packages/cache/src/cache.ts

@@ -3,7 +3,7 @@ import * as path from 'path'
 import * as utils from './internal/cacheUtils'
 import * as cacheHttpClient from './internal/cacheHttpClient'
 import {createTar, extractTar, listTar} from './internal/tar'
-import {DownloadOptions, UploadOptions} from './options'
+import {DownloadOptions, ExtraTarOptions, UploadOptions} from './options'
 
 export class ValidationError extends Error {
   constructor(message: string) {
@@ -68,7 +68,8 @@ export async function restoreCache(
   primaryKey: string,
   restoreKeys?: string[],
   options?: DownloadOptions,
-  enableCrossOsArchive = false
+  enableCrossOsArchive = false,
+  extraTarOptions: ExtraTarOptions = []
 ): Promise<string | undefined> {
   checkPaths(paths)
 
@@ -129,7 +130,7 @@ export async function restoreCache(
       )} MB (${archiveFileSize} B)`
     )
 
-    await extractTar(archivePath, compressionMethod)
+    await extractTar(archivePath, compressionMethod, extraTarOptions)
     core.info('Cache restored successfully')
 
     return cacheEntry.cacheKey
@@ -166,7 +167,8 @@ export async function saveCache(
   paths: string[],
   key: string,
   options?: UploadOptions,
-  enableCrossOsArchive = false
+  enableCrossOsArchive = false,
+  extraTarOptions: ExtraTarOptions = []
 ): Promise<number> {
   checkPaths(paths)
   checkKey(key)
@@ -193,7 +195,12 @@ export async function saveCache(
   core.debug(`Archive Path: ${archivePath}`)
 
   try {
-    await createTar(archiveFolder, cachePaths, compressionMethod)
+    await createTar(
+      archiveFolder,
+      cachePaths,
+      compressionMethod,
+      extraTarOptions
+    )
     if (core.isDebug()) {
       await listTar(archivePath, compressionMethod)
     }

packages/cache/src/internal/tar.ts

@@ -11,6 +11,7 @@ import {
   TarFilename,
   ManifestFilename
 } from './constants'
+import {ExtraTarOptions} from '../options'
 
 const IS_WINDOWS = process.platform === 'win32'
 
@@ -128,7 +129,8 @@ async function getTarArgs(
 async function getCommands(
   compressionMethod: CompressionMethod,
   type: string,
-  archivePath = ''
+  archivePath = '',
+  extraTarOptions: ExtraTarOptions = []
 ): Promise<string[]> {
   let args
 
@@ -139,6 +141,7 @@ async function getCommands(
     type,
     archivePath
   )
+  tarArgs.push(...extraTarOptions)
   const compressionArgs =
     type !== 'create'
       ? await getDecompressionProgram(tarPath, compressionMethod, archivePath)
@@ -272,26 +275,38 @@ export async function listTar(
 // Extract a tar
 export async function extractTar(
   archivePath: string,
-  compressionMethod: CompressionMethod
+  compressionMethod: CompressionMethod,
+  extraTarOptions: ExtraTarOptions = []
 ): Promise<void> {
   // Create directory to extract tar into
   const workingDirectory = getWorkingDirectory()
   await io.mkdirP(workingDirectory)
-  const commands = await getCommands(compressionMethod, 'extract', archivePath)
+  const commands = await getCommands(
+    compressionMethod,
+    'extract',
+    archivePath,
+    extraTarOptions
+  )
   await execCommands(commands)
 }
 
 // Create a tar
 export async function createTar(
   archiveFolder: string,
   sourceDirectories: string[],
-  compressionMethod: CompressionMethod
+  compressionMethod: CompressionMethod,
+  extraTarOptions: ExtraTarOptions = []
 ): 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')
+  const commands = await getCommands(
+    compressionMethod,
+    'create',
+    undefined,
+    extraTarOptions
+  )
   await execCommands(commands, archiveFolder)
 }

packages/cache/src/options.ts

@@ -70,6 +70,12 @@ export interface DownloadOptions {
   lookupOnly?: boolean
 }
 
+/**
+ * Additional options passed to tar
+ */
+
+export type ExtraTarOptions = string[]
+
 /**
  * Returns a copy of the upload options with defaults filled in.
  *