Add cross os opt-in functionality for cache on windows

packages/cache/src/cache.ts

@@ -61,6 +61,7 @@ export function isFeatureAvailable(): boolean {
  * @param paths a list of file paths to restore from the cache
  * @param primaryKey an explicit key for restoring the cache
  * @param restoreKeys an optional ordered list of keys to use for restoring the cache if no cache hit occurred for key
+ * @param crossOsEnabled an optional boolean enabled to restore on windows any cache created on any platform
  * @param downloadOptions cache download options
  * @returns string returns the key for the cache hit, otherwise returns undefined
  */
@@ -68,6 +69,7 @@ export async function restoreCache(
   paths: string[],
   primaryKey: string,
   restoreKeys?: string[],
+  crossOsEnabled = false,
   options?: DownloadOptions
 ): Promise<string | undefined> {
   checkPaths(paths)
@@ -93,7 +95,8 @@ export async function restoreCache(
   try {
     // path are needed to compute version
     cacheEntry = await cacheHttpClient.getCacheEntry(keys, paths, {
-      compressionMethod
+      compressionMethod,
+      crossOsEnabled
     })
     if (!cacheEntry?.archiveLocation) {
       // This is to support the old cache entry created by gzip on windows.
@@ -171,12 +174,14 @@ export async function restoreCache(
  *
  * @param paths a list of file paths to be cached
  * @param key an explicit key for restoring the cache
+ * @param crossOsEnabled an optional boolean enabled to save cache on windows which could be restored on any platform
  * @param options cache upload options
  * @returns number returns cacheId if the cache was saved successfully and throws an error if save fails
  */
 export async function saveCache(
   paths: string[],
   key: string,
+  crossOsEnabled = false,
   options?: UploadOptions
 ): Promise<number> {
   checkPaths(paths)
@@ -227,6 +232,7 @@ export async function saveCache(
       paths,
       {
         compressionMethod,
+        crossOsEnabled,
         cacheSize: archiveFileSize
       }
     )

packages/cache/src/internal/cacheHttpClient.ts

@@ -73,13 +73,18 @@ function createHttpClient(): HttpClient {
 
 export function getCacheVersion(
   paths: string[],
-  compressionMethod?: CompressionMethod
+  compressionMethod?: CompressionMethod,
+  crossOsEnabled = false
 ): string {
-  const components = paths.concat(
+  const components = paths
-    !compressionMethod || compressionMethod === CompressionMethod.Gzip
+    .concat(
-      ? []
+      !compressionMethod || compressionMethod === CompressionMethod.Gzip
-      : [compressionMethod]
+        ? []
-  )
+        : [compressionMethod]
+    )
+    .concat(
+      process.platform !== 'win32' || crossOsEnabled ? [] : ['windows-only']
+    ) // Only check for windows platforms if crossOsEnabled is false
 
   // Add salt to cache version to support breaking changes in cache entry
   components.push(versionSalt)
@@ -96,7 +101,11 @@ export async function getCacheEntry(
   options?: InternalCacheOptions
 ): Promise<ArtifactCacheEntry | null> {
   const httpClient = createHttpClient()
-  const version = getCacheVersion(paths, options?.compressionMethod)
+  const version = getCacheVersion(
+    paths,
+    options?.compressionMethod,
+    options?.crossOsEnabled
+  )
   const resource = `cache?keys=${encodeURIComponent(
     keys.join(',')
   )}&version=${version}`
@@ -181,7 +190,11 @@ export async function reserveCache(
   options?: InternalCacheOptions
 ): Promise<ITypedResponseWithError<ReserveCacheResponse>> {
   const httpClient = createHttpClient()
-  const version = getCacheVersion(paths, options?.compressionMethod)
+  const version = getCacheVersion(
+    paths,
+    options?.compressionMethod,
+    options?.crossOsEnabled
+  )
 
   const reserveCacheRequest: ReserveCacheRequest = {
     key,

packages/cache/src/internal/contracts.d.ts

@@ -34,8 +34,9 @@ export interface ReserveCacheResponse {
 }
 
 export interface InternalCacheOptions {
-  compressionMethod?: CompressionMethod
   cacheSize?: number
+  compressionMethod?: CompressionMethod
+  crossOsEnabled?: boolean
 }
 
 export interface ArchiveTool {