Support deliverAt and deliverAfter attribute for Websocket producer. (a…

…pache#8945)

### Motivation


Support deliverAt and deliverAfter attribute for Websocket producer

### Modifications

Apply deliverAt and deliverAfter to message builder for Websocket message build if not negative.

### Verifying this change

Added unit test to verify attributes set on message builder.

pulsar-websocket/src/main/java/org/apache/pulsar/websocket/ProducerHandler.java

@@ -202,8 +202,15 @@ public void onWebSocketText(String message) {
                 return;
             }
         }
+        if (sendRequest.deliverAt > 0) {
+            builder.deliverAt(sendRequest.deliverAt);
+        }
+        if (sendRequest.deliverAfterMs > 0) {
+            builder.deliverAfter(sendRequest.deliverAfterMs, TimeUnit.MILLISECONDS);
+        }
 
         final long now = System.nanoTime();
+
         builder.sendAsync().thenAccept(msgId -> {
             updateSentMsgStats(msgSize, TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - now));
             if (isConnected()) {

pulsar-websocket/src/test/java/org/apache/pulsar/websocket/ProducerHandlerTest.java

@@ -0,0 +1,95 @@
+/**
+ * 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.pulsar.websocket;
+
+import org.apache.pulsar.client.api.Producer;
+import org.apache.pulsar.client.api.ProducerBuilder;
+import org.apache.pulsar.client.api.PulsarClient;
+import org.apache.pulsar.client.api.TypedMessageBuilder;
+import org.apache.pulsar.client.impl.MessageIdImpl;
+import org.apache.pulsar.common.util.ObjectMapperFactory;
+import org.apache.pulsar.websocket.data.ProducerMessage;
+import org.eclipse.jetty.websocket.servlet.ServletUpgradeResponse;
+import org.testng.annotations.Test;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+public class ProducerHandlerTest {
+
+    @Test
+    public void testProduceMessageAttributes() throws IOException {
+        String producerV2 = "/ws/v2/producer/persistent/my-property/my-ns/my-topic";
+        HttpServletRequest httpServletRequest = mock(HttpServletRequest.class);
+        PulsarClient pulsarClient = mock(PulsarClient.class);
+        ProducerBuilder producerBuilder = mock(ProducerBuilder.class);
+        Producer producer = mock(Producer.class);
+        TypedMessageBuilder messageBuilder = mock(TypedMessageBuilder.class);
+        ProducerMessage produceRequest = new ProducerMessage();
+
+        produceRequest.setDeliverAfterMs(11111);
+        produceRequest.setDeliverAt(22222);
+        produceRequest.setContext("context");
+        produceRequest.setPayload(Base64.getEncoder().encodeToString("my payload".getBytes()));
+
+        // the params are all different with the default value
+        Map<String, String[]> queryParams = new HashMap<>();
+
+        httpServletRequest = mock(HttpServletRequest.class);
+        when(httpServletRequest.getRequestURI()).thenReturn(producerV2);
+        when(httpServletRequest.getParameterMap()).thenReturn(queryParams);
+
+        WebSocketService service = mock(WebSocketService.class);
+        when(service.isAuthenticationEnabled()).thenReturn(false);
+        when(service.isAuthorizationEnabled()).thenReturn(false);
+        when(service.getPulsarClient()).thenReturn(pulsarClient);
+
+        when(pulsarClient.newProducer()).thenReturn(producerBuilder);
+        when(producerBuilder.enableBatching(anyBoolean())).thenReturn(producerBuilder);
+        when(producerBuilder.messageRoutingMode(any())).thenReturn(producerBuilder);
+        when(producerBuilder.blockIfQueueFull(anyBoolean())).thenReturn(producerBuilder);
+        when(producerBuilder.topic(anyString())).thenReturn(producerBuilder);
+        when(producerBuilder.create()).thenReturn(producer);
+
+        when(producer.newMessage()).thenReturn(messageBuilder);
+        when(messageBuilder.sendAsync()).thenReturn( CompletableFuture.completedFuture(new MessageIdImpl(1, 2, 3)));
+
+        ServletUpgradeResponse response = mock(ServletUpgradeResponse.class);
+
+        ProducerHandler producerHandler = new ProducerHandler(service, httpServletRequest, response);
+        producerHandler.onWebSocketText(ObjectMapperFactory.getThreadLocal().writeValueAsString(produceRequest));
+
+        verify(messageBuilder, times(1)).deliverAfter(11111, TimeUnit.MILLISECONDS);
+        verify(messageBuilder, times(1)).deliverAt(22222);
+    }
+
+}