[jps-cache] Clear download folder and fix extract cancellation

GitOrigin-RevId: ca4c1d9e6cfd331faa4ff632c87b011286020e37

plugins/jps-cache/src/com/intellij/jps/cache/client/TemporaryCacheServerClient.java

@@ -143,8 +143,9 @@ public class TemporaryCacheServerClient implements JpsServerClient {
     catch (ProcessCanceledException | IOException e) {
       //noinspection InstanceofCatchParameter
       if (e instanceof IOException) LOG.warn("Failed to download JPS compilation outputs", e);
+      if (targetDir.exists()) FileUtil.delete(targetDir);
       downloadedFiles.forEach(zipFile -> FileUtil.delete(zipFile));
-      return Collections.emptyList();
+      return null;
     }
   }
 

plugins/jps-cache/src/com/intellij/jps/cache/loader/JpsCompilationOutputLoader.java

@@ -89,7 +89,7 @@ class JpsCompilationOutputLoader implements JpsOutputLoader<List<OutputLoadResul
       extractIndicatorManager.setText(this, "Extracting downloaded results...");
       List<Future<?>> futureList = ContainerUtil.map(outputLoadResults, loadResult ->
         myExecutorService.submit(new UnzipOutputTask(result, loadResult, extractIndicatorManager)));
-      for (Future future : futureList) {
+      for (Future<?> future : futureList) {
         future.get();
       }
       extractIndicatorManager.finished(this);

plugins/jps-cache/src/com/intellij/jps/cache/loader/JpsOutputLoaderManager.java

@@ -65,9 +65,7 @@ public class JpsOutputLoaderManager {
     // Configure build manager
     BuildManager buildManager = BuildManager.getInstance();
     if (!buildManager.isGeneratePortableCachesEnabled()) buildManager.setGeneratePortableCachesEnabled(true);
-    myExecutorService = AppExecutorUtil.createBoundedApplicationPoolExecutor("JpsCacheLoader Pool",
-                                                                             INSTANCE,
-                                                                             getThreadPoolSize());
+    myExecutorService = AppExecutorUtil.createBoundedApplicationPoolExecutor("JpsCacheLoader Pool", INSTANCE, getThreadPoolSize());
   }
 
   public void load(boolean isForceUpdate) {