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Posted to notifications@dubbo.apache.org by "wangchengming666 (via GitHub)" <gi...@apache.org> on 2026/01/02 14:49:21 UTC
[PR] sample for triple backpressure [dubbo-samples]
wangchengming666 opened a new pull request, #1278:
URL: https://github.com/apache/dubbo-samples/pull/1278
(no comment)
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Re: [PR] sample for triple backpressure [dubbo-samples]
Posted by "EarthChen (via GitHub)" <gi...@apache.org>.
EarthChen merged PR #1278:
URL: https://github.com/apache/dubbo-samples/pull/1278
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Re: [PR] sample for triple backpressure [dubbo-samples]
Posted by "zrlw (via GitHub)" <gi...@apache.org>.
zrlw commented on PR #1278:
URL: https://github.com/apache/dubbo-samples/pull/1278#issuecomment-3707814164
1. we had a great effort to remove```System.out.printXXX``` codes for performance reason, we should use log.info for logging message.
2. since this pr is written for https://github.com/apache/dubbo/pull/15957, but i don't see the difference whether applying with https://github.com/apache/dubbo/pull/15957 or not.
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Re: [PR] sample for triple backpressure [dubbo-samples]
Posted by "zrlw (via GitHub)" <gi...@apache.org>.
zrlw commented on code in PR #1278:
URL: https://github.com/apache/dubbo-samples/pull/1278#discussion_r2659462942
##########
2-advanced/dubbo-samples-triple-backpressure/src/main/java/org/apache/dubbo/samples/backpressure/BackpressureConsumer.java:
##########
@@ -0,0 +1,331 @@
+/*
+ * 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.dubbo.samples.backpressure;
+
+import org.apache.dubbo.common.stream.StreamObserver;
+import org.apache.dubbo.config.ApplicationConfig;
+import org.apache.dubbo.config.ReferenceConfig;
+import org.apache.dubbo.config.RegistryConfig;
+import org.apache.dubbo.config.bootstrap.DubboBootstrap;
+import org.apache.dubbo.rpc.protocol.tri.CancelableStreamObserver;
+import org.apache.dubbo.rpc.protocol.tri.observer.ClientCallToObserverAdapter;
+import org.apache.dubbo.samples.backpressure.api.BackpressureService;
+import org.apache.dubbo.samples.backpressure.api.DataChunk;
+import org.apache.dubbo.samples.backpressure.api.StreamRequest;
+import org.apache.dubbo.samples.backpressure.api.StreamResponse;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
+
+public class BackpressureConsumer {
+
+ private static final String ZOOKEEPER_HOST = System.getProperty("zookeeper.address", "127.0.0.1");
+ private static final String ZOOKEEPER_PORT = System.getProperty("zookeeper.port", "2181");
+
+ public static void main(String[] args) throws Exception {
+ ReferenceConfig<BackpressureService> reference = new ReferenceConfig<>();
+ reference.setInterface(BackpressureService.class);
+ reference.setProtocol("tri");
+
+ String zkAddress = "zookeeper://" + ZOOKEEPER_HOST + ":" + ZOOKEEPER_PORT;
+ System.out.println("Using ZooKeeper: " + zkAddress);
+
+ DubboBootstrap bootstrap = DubboBootstrap.getInstance();
+ bootstrap.application(new ApplicationConfig("backpressure-consumer"))
+ .registry(new RegistryConfig(zkAddress))
+ .reference(reference)
+ .start();
+
+ BackpressureService service = reference.get();
+
+ System.out.println("=== Test 1: Basic Echo ===");
+ testEcho(service);
+
+ System.out.println("\n=== Test 2: Server Stream WITHOUT Backpressure ===");
Review Comment:
it might be better to use log.info for performance reason.
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