change getinput to getstate for cache (#816)

src/cache-save.ts

@@ -16,7 +16,7 @@ process.on('uncaughtException', e => {
 
 export async function run() {
   try {
-    const cacheLock = core.getInput('cache');
+    const cacheLock = core.getState(State.CachePackageManager);
     await cachePackages(cacheLock);
   } catch (error) {
     core.setFailed(error.message);

src/constants.ts

@@ -5,6 +5,7 @@ export enum LockType {
 }
 
 export enum State {
+  CachePackageManager = 'SETUP_NODE_CACHE_PACKAGE_MANAGER',
   CachePrimaryKey = 'CACHE_KEY',
   CacheMatchedKey = 'CACHE_RESULT',
   CachePaths = 'CACHE_PATHS'

src/main.ts

@@ -9,6 +9,7 @@ import {restoreCache} from './cache-restore';
 import {isCacheFeatureAvailable} from './cache-utils';
 import {getNodejsDistribution} from './distributions/installer-factory';
 import {parseNodeVersionFile, printEnvDetailsAndSetOutput} from './util';
+import {State} from './constants';
 
 export async function run() {
   try {
@@ -60,6 +61,7 @@ export async function run() {
     }
 
     if (cache && isCacheFeatureAvailable()) {
+      core.saveState(State.CachePackageManager, cache);
       const cacheDependencyPath = core.getInput('cache-dependency-path');
       await restoreCache(cache, cacheDependencyPath);
     }