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zehnder pushed a commit to branch dev
in repository https://gitbox.apache.org/repos/asf/streampipes.git


The following commit(s) were added to refs/heads/dev by this push:
     new cb5d5739e5 fix(#3837): Remove delete preview rest endpoint (#3838)
cb5d5739e5 is described below

commit cb5d5739e554aaef5813633b7d7f5be03c312726
Author: Philipp Zehnder <[email protected]>
AuthorDate: Wed Oct 15 17:01:19 2025 +0200

    fix(#3837): Remove delete preview rest endpoint (#3838)
---
 .../manager/runtime/ClientDisconnectCallback.java  | 24 +++++++++++
 .../runtime/RateLimitedRuntimeInfoProvider.java    |  7 +++-
 .../PipelinePreviewResource.java}                  | 23 +++++------
 .../StreamPreviewResource.java}                    |  9 ++--
 .../apis/pipeline-element-runtime-info.service.ts  |  2 +-
 .../pipeline-assembly-drawing-area.component.ts    | 48 +++++++++++-----------
 ui/src/app/editor/services/editor.service.ts       |  6 +--
 7 files changed, 72 insertions(+), 47 deletions(-)

diff --git 
a/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/ClientDisconnectCallback.java
 
b/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/ClientDisconnectCallback.java
new file mode 100644
index 0000000000..c95f0e152f
--- /dev/null
+++ 
b/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/ClientDisconnectCallback.java
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.streampipes.manager.runtime;
+
+@FunctionalInterface
+public interface ClientDisconnectCallback {
+  void onClientDisconnect();
+}
diff --git 
a/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/RateLimitedRuntimeInfoProvider.java
 
b/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/RateLimitedRuntimeInfoProvider.java
index ee763a40f6..7ef0949521 100644
--- 
a/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/RateLimitedRuntimeInfoProvider.java
+++ 
b/streampipes-pipeline-management/src/main/java/org/apache/streampipes/manager/runtime/RateLimitedRuntimeInfoProvider.java
@@ -31,10 +31,14 @@ public class RateLimitedRuntimeInfoProvider {
 
   private final DataStreamRuntimeInfoProvider runtimeInfoProvider;
   private final ObjectMapper objectMapper;
+  private final ClientDisconnectCallback callback;
 
-  public RateLimitedRuntimeInfoProvider(DataStreamRuntimeInfoProvider 
runtimeInfoProvider) {
+
+  public RateLimitedRuntimeInfoProvider(DataStreamRuntimeInfoProvider 
runtimeInfoProvider,
+                                        ClientDisconnectCallback callback) {
     this.runtimeInfoProvider = runtimeInfoProvider;
     this.objectMapper = new ObjectMapper();
+    this.callback = callback;
   }
 
   public void streamOutput(OutputStream outputStream) {
@@ -47,6 +51,7 @@ public class RateLimitedRuntimeInfoProvider {
             outputStream.write((objectMapper.writeValueAsString(messages) + 
"\n").getBytes());
             outputStream.flush();
           } catch (IOException ignored) {
+            callback.onClientDisconnect();
           }
         }
         TimeUnit.MILLISECONDS.sleep(MAX_FREQUENCY);
diff --git 
a/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementPreview.java
 
b/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/PipelinePreviewResource.java
similarity index 82%
rename from 
streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementPreview.java
rename to 
streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/PipelinePreviewResource.java
index 59fb2aa053..3192f17a6e 100644
--- 
a/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementPreview.java
+++ 
b/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/PipelinePreviewResource.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  *
  */
-package org.apache.streampipes.rest.impl;
+package org.apache.streampipes.rest.impl.runtime;
 
 import org.apache.streampipes.manager.preview.PipelinePreview;
 import org.apache.streampipes.manager.runtime.DataStreamRuntimeInfoProvider;
@@ -27,7 +27,6 @@ import 
org.apache.streampipes.rest.shared.exception.BadRequestException;
 
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -39,8 +38,8 @@ import 
org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBo
 import jakarta.servlet.http.HttpServletResponse;
 
 @RestController
-@RequestMapping("/api/v2/pipeline-element-preview")
-public class PipelineElementPreview extends AbstractAuthGuardedRestResource {
+@RequestMapping("/api/v2/pipeline-preview")
+public class PipelinePreviewResource extends AbstractAuthGuardedRestResource {
 
 
   @PostMapping(
@@ -54,26 +53,24 @@ public class PipelineElementPreview extends 
AbstractAuthGuardedRestResource {
   }
 
   @GetMapping(path = "{previewId}",
-      produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
+              produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
   public StreamingResponseBody getPipelinePreviewResult(
       HttpServletResponse response,
-      @PathVariable("previewId") String previewId) {
+      @PathVariable("previewId") String previewId
+  ) {
     try {
       // deactivate nginx proxy buffering for better performance of streaming 
output
       response.addHeader("X-Accel-Buffering", "no");
       var spDataStreams = new 
PipelinePreview().getPipelineElementPreviewStreams(previewId);
       var runtimeInfoFetcher = new 
DataStreamRuntimeInfoProvider(spDataStreams);
-      var runtimeInfoProvider = new 
RateLimitedRuntimeInfoProvider(runtimeInfoFetcher);
+      var runtimeInfoProvider = new RateLimitedRuntimeInfoProvider(
+          runtimeInfoFetcher,
+          () -> new PipelinePreview().deletePreview(previewId)
+      );
       return runtimeInfoProvider::streamOutput;
     } catch (IllegalArgumentException e) {
       throw new BadRequestException("Could not generate preview", e);
     }
   }
 
-  @DeleteMapping(path = "{previewId}", produces = 
MediaType.APPLICATION_JSON_VALUE)
-  public ResponseEntity<Void> 
deletePipelinePreviewRequest(@PathVariable("previewId") String previewId) {
-    new PipelinePreview().deletePreview(previewId);
-    return ok();
-  }
-
 }
diff --git 
a/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementRuntimeInfo.java
 
b/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/StreamPreviewResource.java
similarity index 91%
rename from 
streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementRuntimeInfo.java
rename to 
streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/StreamPreviewResource.java
index 17a11bfbfc..5988a96d1d 100644
--- 
a/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/PipelineElementRuntimeInfo.java
+++ 
b/streampipes-rest/src/main/java/org/apache/streampipes/rest/impl/runtime/StreamPreviewResource.java
@@ -15,7 +15,8 @@
  * limitations under the License.
  *
  */
-package org.apache.streampipes.rest.impl;
+
+package org.apache.streampipes.rest.impl.runtime;
 
 import org.apache.streampipes.manager.runtime.DataStreamRuntimeInfoProvider;
 import org.apache.streampipes.manager.runtime.RateLimitedRuntimeInfoProvider;
@@ -34,8 +35,8 @@ import jakarta.servlet.http.HttpServletResponse;
 import java.util.Map;
 
 @RestController
-@RequestMapping("/api/v2/pipeline-element/runtime")
-public class PipelineElementRuntimeInfo extends AbstractRestResource {
+@RequestMapping("/api/v2/stream-preview")
+public class StreamPreviewResource extends AbstractRestResource {
 
   @PostMapping(
       produces = MediaType.APPLICATION_OCTET_STREAM_VALUE,
@@ -46,7 +47,7 @@ public class PipelineElementRuntimeInfo extends 
AbstractRestResource {
     // deactivate nginx proxy buffering for better performance of streaming 
output
     response.addHeader("X-Accel-Buffering", "no");
     var runtimeInfoFetcher = new 
DataStreamRuntimeInfoProvider(Map.of("adapter", spDataStream));
-    var runtimeInfoProvider = new 
RateLimitedRuntimeInfoProvider(runtimeInfoFetcher);
+    var runtimeInfoProvider = new 
RateLimitedRuntimeInfoProvider(runtimeInfoFetcher, () -> {});
     return runtimeInfoProvider::streamOutput;
   }
 }
diff --git 
a/ui/projects/streampipes/platform-services/src/lib/apis/pipeline-element-runtime-info.service.ts
 
b/ui/projects/streampipes/platform-services/src/lib/apis/pipeline-element-runtime-info.service.ts
index e9d53b8c3b..b88df44ce7 100644
--- 
a/ui/projects/streampipes/platform-services/src/lib/apis/pipeline-element-runtime-info.service.ts
+++ 
b/ui/projects/streampipes/platform-services/src/lib/apis/pipeline-element-runtime-info.service.ts
@@ -34,7 +34,7 @@ export class PipelineElementRuntimeInfoService {
         sourceDescription: SpDataStream,
     ): Observable<HttpEvent<string>> {
         return this.http.post(
-            
`${this.platformServicesCommons.apiBasePath}/pipeline-element/runtime`,
+            `${this.platformServicesCommons.apiBasePath}/stream-preview`,
             sourceDescription,
             {
                 responseType: 'text',
diff --git 
a/ui/src/app/editor/components/pipeline-assembly/pipeline-assembly-drawing-area/pipeline-assembly-drawing-area.component.ts
 
b/ui/src/app/editor/components/pipeline-assembly/pipeline-assembly-drawing-area/pipeline-assembly-drawing-area.component.ts
index f78a8d0fec..bf1f8b2d35 100644
--- 
a/ui/src/app/editor/components/pipeline-assembly/pipeline-assembly-drawing-area/pipeline-assembly-drawing-area.component.ts
+++ 
b/ui/src/app/editor/components/pipeline-assembly/pipeline-assembly-drawing-area/pipeline-assembly-drawing-area.component.ts
@@ -22,6 +22,7 @@ import {
     EventEmitter,
     Input,
     NgZone,
+    OnDestroy,
     OnInit,
     Output,
     ViewChild,
@@ -52,7 +53,7 @@ import { Subscription } from 'rxjs';
     styleUrls: ['./pipeline-assembly-drawing-area.component.scss'],
     standalone: false,
 })
-export class PipelineAssemblyDrawingAreaComponent implements OnInit {
+export class PipelineAssemblyDrawingAreaComponent implements OnInit, OnDestroy 
{
     @Input()
     jsplumbBridge: JsplumbBridge;
 
@@ -109,6 +110,10 @@ export class PipelineAssemblyDrawingAreaComponent 
implements OnInit {
         }
     }
 
+    ngOnDestroy(): void {
+        this.pipelinePreviewSub?.unsubscribe();
+    }
+
     isPipelineAssemblyEmpty() {
         return (
             this.rawPipelineModel.length === 0 ||
@@ -152,36 +157,33 @@ export class PipelineAssemblyDrawingAreaComponent 
implements OnInit {
             );
             this.editorService
                 .initiatePipelinePreview(pipeline)
-                .subscribe(response => {
-                    this.pipelinePreview = response;
+                .subscribe(pipelinePreviewModel => {
+                    this.pipelinePreview = pipelinePreviewModel;
                     this.previewModeActive = true;
-                    this.pipelinePreviewSub = this.editorService
-                        .getPipelinePreviewResult(response.previewId)
-                        .subscribe(res => {
-                            const data = this.livePreviewService.convert(
-                                res as HttpDownloadProgressEvent,
-                            );
-                            if (data) {
-                                this.livePreviewService.eventSub.next(data);
-                            }
-                        });
+                    this.subscribeToPreview(pipelinePreviewModel.previewId);
                 });
         } else {
-            this.deletePipelineElementPreview(false);
+            this.deletePipelineElementPreview();
         }
     }
 
-    deletePipelineElementPreview(resume: boolean) {
+    private subscribeToPreview(previewId: string) {
+        this.pipelinePreviewSub = this.editorService
+            .getPipelinePreviewResult(previewId)
+            .subscribe(res => {
+                const data = this.livePreviewService.convert(
+                    res as HttpDownloadProgressEvent,
+                );
+                if (data) {
+                    this.livePreviewService.eventSub.next(data);
+                }
+            });
+    }
+
+    deletePipelineElementPreview() {
         if (this.previewModeActive) {
             this.pipelinePreviewSub?.unsubscribe();
-            this.editorService
-                .deletePipelinePreviewRequest(this.pipelinePreview.previewId)
-                .subscribe(() => {
-                    this.previewModeActive = false;
-                    if (resume) {
-                        this.togglePipelineElementLivePreview();
-                    }
-                });
+            this.previewModeActive = false;
         }
     }
 
diff --git a/ui/src/app/editor/services/editor.service.ts 
b/ui/src/app/editor/services/editor.service.ts
index c5b4445493..b232d8ca08 100644
--- a/ui/src/app/editor/services/editor.service.ts
+++ b/ui/src/app/editor/services/editor.service.ts
@@ -200,10 +200,6 @@ export class EditorService {
             );
     }
 
-    deletePipelinePreviewRequest(previewId: string): Observable<any> {
-        return this.http.delete(this.pipelinePreviewBasePath + '/' + 
previewId);
-    }
-
     getPipelinePreviewResult(previewId: string): Observable<HttpEvent<string>> 
{
         return this.http.get(`${this.pipelinePreviewBasePath}/${previewId}`, {
             responseType: 'text',
@@ -214,6 +210,6 @@ export class EditorService {
     }
 
     get pipelinePreviewBasePath() {
-        return this.apiBasePath + '/pipeline-element-preview';
+        return this.apiBasePath + '/pipeline-preview';
     }
 }

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