add cache restore

Author: Maxim Lobanov

action.yml

@@ -5,6 +5,9 @@ inputs:
   packages:
     description: 'Packages to install'
     required: true
+  cache:
+    description: 'Enable caching'
+    required: false
 runs:
   using: 'node12'
   main: 'dist/index.js'

dist/index.js

@@ -47561,17 +47561,28 @@ const run = async () => {
             core.info(`Installing '${packageName}'...`);
             const foundPackage = allPackages.find(p => p.name === packageName);
             if (!foundPackage) {
-                throw new Error(`  Package '${packageName}' is not available. Enable debug output for more details.`);
+                throw new Error(`Package '${packageName}' is not available. Enable debug output for more details.`);
             }
             if (foundPackage.installed && !foundPackage.update) {
-                core.info(`Package '${foundPackage.name}' is already installed and update is not required`);
+                core.info(`  Package '${foundPackage.name}' is already installed and update is not required`);
                 continue;
             }
             const cacheKey = `${foundPackage.name} ${foundPackage.remoteVersion}`;
-            await sdkmanager.install(foundPackage);
             const localPackagePath = sdkmanager.getPackagePath(foundPackage);
+            let cacheHit = false;
+            if (enableCache) {
+                const cacheHitKey = await cache.restoreCache([localPackagePath], cacheKey);
+                cacheHit = Boolean(cacheHitKey);
+            }
+            if (cacheHit) {
+                core.info(`  Package ${foundPackage.name}' is restored from cache`);
+                continue;
+            }
+            await sdkmanager.install(foundPackage);
+            core.info(`  Package ${foundPackage.name}' is downloaded and installed`);
             if (enableCache) {
                 await cache.saveCache([localPackagePath], cacheKey);
+                core.info(`  Package ${foundPackage.name}' is saved to cache`);
             }
         }
     }

src/setup-android-tools.ts

@@ -28,22 +28,34 @@ const run = async(): Promise<void> => {
             core.info(`Installing '${packageName}'...`);
             const foundPackage = allPackages.find(p => p.name === packageName);
             if (!foundPackage) {
-                throw new Error(`  Package '${packageName}' is not available. Enable debug output for more details.`);
+                throw new Error(`Package '${packageName}' is not available. Enable debug output for more details.`);
             }
 
             if (foundPackage.installed && !foundPackage.update) {
-                core.info(`Package '${foundPackage.name}' is already installed and update is not required`);
+                core.info(`  Package '${foundPackage.name}' is already installed and update is not required`);
                 continue;
             }
 
             const cacheKey = `${foundPackage.name} ${foundPackage.remoteVersion}`;
+            const localPackagePath = sdkmanager.getPackagePath(foundPackage);
 
-            await sdkmanager.install(foundPackage);
+            let cacheHit = false;
+            if (enableCache) {
+                const cacheHitKey = await cache.restoreCache([localPackagePath], cacheKey);
+                cacheHit = Boolean(cacheHitKey);
+            }
 
-            const localPackagePath = sdkmanager.getPackagePath(foundPackage);
+            if (cacheHit) {
+                core.info(`  Package ${foundPackage.name}' is restored from cache`);
+                continue;
+            }
+
+            await sdkmanager.install(foundPackage);
+            core.info(`  Package ${foundPackage.name}' is downloaded and installed`);
 
             if (enableCache) {
                 await cache.saveCache([localPackagePath], cacheKey);
+                core.info(`  Package ${foundPackage.name}' is saved to cache`);
             }
         }
     } catch (error) {