Add action after batch delete to clean up empty parent folders

src/main/java/org/commonjava/indy/service/tracking/client/storage/StorageBatchDeleteRequest.java

@@ -0,0 +1,51 @@
+/**
+ * Copyright (C) 2022-2023 Red Hat, Inc. (https://github.com/Commonjava/indy-tracking-service)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.commonjava.indy.service.tracking.client.storage;
+
+import java.util.Set;
+
+/**
+ * Delete multiple paths in one filesystem.
+ */
+public class StorageBatchDeleteRequest {
+    private Set<String> paths;
+
+    private String filesystem;
+
+    public Set<String> getPaths() {
+        return paths;
+    }
+
+    public void setPaths(Set<String> paths) {
+        this.paths = paths;
+    }
+
+    public String getFilesystem() {
+        return filesystem;
+    }
+
+    public void setFilesystem(String filesystem) {
+        this.filesystem = filesystem;
+    }
+
+    @Override
+    public String toString() {
+        return "BatchDeleteRequest{" +
+                "paths=" + paths +
+                ", filesystem='" + filesystem + '\'' +
+                '}';
+    }
+}

src/main/java/org/commonjava/indy/service/tracking/client/storage/StorageService.java

@@ -0,0 +1,39 @@
+/**
+ * Copyright (C) 2022-2023 Red Hat, Inc. (https://github.com/Commonjava/indy-tracking-service)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.commonjava.indy.service.tracking.client.storage;
+
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.commonjava.indy.service.security.jaxrs.CustomClientRequestFilter;
+
+import jakarta.ws.rs.DELETE;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.Consumes;
+import static jakarta.ws.rs.core.MediaType.APPLICATION_JSON;
+
+@Path("/api/storage")
+@RegisterRestClient(configKey = "storage-service-api")
+@RegisterProvider(CustomClientRequestFilter.class)
+public interface StorageService {
+    /**
+     * Delete empty folders by Storage BatchDeleteRequest as JSON body.
+     */
+    @DELETE
+    @Path("/maint/folders/empty")
+    @Consumes(APPLICATION_JSON)
+    Response cleanupEmptyFolders(StorageBatchDeleteRequest request);
+} 

src/main/java/org/commonjava/indy/service/tracking/controller/AdminController.java

@@ -58,6 +58,8 @@
 
 import static org.commonjava.indy.service.tracking.util.TrackingUtils.readZipInputStreamAnd;
 import static org.commonjava.indy.service.tracking.util.TrackingUtils.zipTrackedContent;
+import org.commonjava.indy.service.tracking.client.storage.StorageBatchDeleteRequest;
+import org.commonjava.indy.service.tracking.client.storage.StorageService;
 
 @ApplicationScoped
 public class AdminController
@@ -76,6 +78,10 @@ public class AdminController
     @RestClient
     PromoteService promoteService;
 
+    @Inject
+    @RestClient
+    StorageService storageService;
+
     @Inject
     private IndyTrackingConfiguration config;
 
@@ -410,6 +416,42 @@ public boolean deletionAdditionalGuardCheck( BatchDeleteRequest deleteRequest )
         return isOk.get();
     }
 
+    /**
+     * Post-action after successful batch delete: cleans up empty parent folders.
+     * <p>
+     * For each deleted path, collects its immediate parent folder (one level up).
+     * Then calls the storage service to clean up these folders, relying on the
+     * storage API to handle ancestor folders as needed.
+     * </p>
+     *
+     * @param filesystem the target filesystem/storeKey as a string
+     * @param paths the set of deleted file paths
+     */
+    public void cleanupEmptyFolders(String filesystem, Set<String> paths) {
+        logger.info("Post-action: cleanupEmptyFolder, filesystem={}, paths={}", filesystem, paths);
+        if (paths == null || paths.isEmpty()) {
+            logger.info("No paths to process for cleanup.");
+            return;
+        }
+        Set<String> folders = new HashSet<>();
+        for (String path : paths) {
+            int idx = path.lastIndexOf('/');
+            if (idx > 0) {
+                String folder = path.substring(0, idx);
+                folders.add(folder);
+            }
+        }
+        StorageBatchDeleteRequest req = new StorageBatchDeleteRequest();
+        req.setFilesystem(filesystem);
+        req.setPaths(folders);
+        try {
+            Response resp = storageService.cleanupEmptyFolders(req);
+            logger.info("Cleanup empty folders, req: {}, status {}", req, resp.getStatus());
+        } catch (Exception e) {
+            logger.warn("Failed to cleanup folders, request: {}, error: {}", req, e.getMessage(), e);
+        }
+    }
+
     private boolean isSuccess(Response resp) {
         return Response.Status.fromStatusCode(resp.getStatus()).getFamily()
                 == Response.Status.Family.SUCCESSFUL;

src/main/java/org/commonjava/indy/service/tracking/jaxrs/AdminResource.java

@@ -63,6 +63,8 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
 
 import static java.util.Collections.emptySet;
 import static jakarta.ws.rs.core.MediaType.APPLICATION_JSON;
@@ -95,6 +97,10 @@ public class AdminResource
     @Inject
     private IndyTrackingConfiguration config;
 
+    // Inject a managed Executor for running async post-actions without blocking the main thread
+    @Inject
+    Executor executor;
+
     public AdminResource()
     {
     }
@@ -424,7 +430,12 @@ public Response doDelete( @Context final UriInfo uriInfo, final BatchDeleteReque
             }
         }
 
-        return maintenanceService.doDelete( request );
+        Response response = maintenanceService.doDelete( request );
+        if (response.getStatus() == Response.Status.OK.getStatusCode()) {
+            // Run the cleanupEmptyFolder post-action asynchronously
+            CompletableFuture.runAsync(() -> controller.cleanupEmptyFolders(
+                request.getStoreKey().toString(), request.getPaths()), executor);
+        }
+        return response;
     }
-
 }

src/test/java/org/commonjava/indy/service/tracking/handler/MockableStorageService.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (C) 2022-2023 Red Hat, Inc. (https://github.com/Commonjava/indy-tracking-service)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.commonjava.indy.service.tracking.handler;
+
+import io.quarkus.test.Mock;
+import jakarta.ws.rs.core.Response;
+import org.apache.http.HttpStatus;
+import org.commonjava.indy.service.tracking.client.storage.StorageBatchDeleteRequest;
+import org.commonjava.indy.service.tracking.client.storage.StorageService;
+import org.eclipse.microprofile.rest.client.inject.RestClient;
+
+@Mock
+@RestClient
+public class MockableStorageService
+                implements StorageService
+{
+    @Override
+    public Response cleanupEmptyFolders( StorageBatchDeleteRequest request )
+    {
+        return Response.status( HttpStatus.SC_OK ).build();
+    }
+}