support warpbuild cache provider

README.md

@@ -82,7 +82,7 @@ sensible defaults.
     lookup-only: ""
 
     # Specifies what to use as the backend providing cache
-    # Can be set to either "github" or "buildjet"
+    # Can be set to "github", "buildjet", or "warpbuild"
     # default: "github"
     cache-provider: ""
 

action.yml

@@ -41,7 +41,7 @@ inputs:
     required: false
     default: "true"
   cache-provider:
-    description: "Determines which provider to use for caching. Options are github or buildjet, defaults to github."
+    description: "Determines which provider to use for caching. Options are github, buildjet, or warpbuild. Defaults to github."
     required: false
     default: "github"
   cache-bin:

package.json

@@ -23,6 +23,7 @@
   "homepage": "https://github.com/Swatinem/rust-cache#readme",
   "dependencies": {
     "@actions/buildjet-cache": "npm:github-actions.cache-buildjet@0.2.0",
+    "@actions/warpbuild-cache": "npm:github-actions.warp-cache@1.4.5",
     "@actions/cache": "^4.0.0",
     "@actions/core": "^1.11.1",
     "@actions/exec": "^1.1.1",

src/utils.ts

@@ -1,6 +1,7 @@
 import * as core from "@actions/core";
 import * as exec from "@actions/exec";
 import * as buildjetCache from "@actions/buildjet-cache";
+import * as warpbuildCache from "@actions/warpbuild-cache";
 import * as ghCache from "@actions/cache";
 import fs from "fs";
 
@@ -44,17 +45,32 @@ export async function getCmdOutput(
   return stdout;
 }
 
+export interface GhCache {
+  isFeatureAvailable: typeof ghCache.isFeatureAvailable;
+  restoreCache: typeof ghCache.restoreCache;
+  saveCache: (paths: string[], key: string) => Promise<string | number>;
+}
+
 export interface CacheProvider {
   name: string;
-  cache: typeof ghCache;
+  cache: GhCache;
 }
 
 export function getCacheProvider(): CacheProvider {
   const cacheProvider = core.getInput("cache-provider");
-  const cache = cacheProvider === "github" ? ghCache : cacheProvider === "buildjet" ? buildjetCache : undefined;
-
-  if (!cache) {
-    throw new Error(`The \`cache-provider\` \`{cacheProvider}\` is not valid.`);
+  let cache: GhCache;
+  switch (cacheProvider) {
+    case "github":
+      cache = ghCache;
+      break;
+    case "buildjet":
+      cache = buildjetCache;
+      break;
+    case "warpbuild":
+      cache = warpbuildCache;
+      break;
+    default:
+      throw new Error(`The \`cache-provider\` \`${cacheProvider}\` is not valid.`);
   }
 
   return {