[GitHub] [pulsar] jerrypeng commented on a change in pull request #10008: [PIP-82] [pulsar-broker] Add a task to publish resource usage to a topic

[GitBox <gi...@apache.org>]

jerrypeng commented on a change in pull request #10008:
URL: https://github.com/apache/pulsar/pull/10008#discussion_r607315950



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File path: pulsar-broker/src/main/java/org/apache/pulsar/broker/resourcegroup/ResourceUsageTransportManager.java
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@@ -0,0 +1,243 @@
+/**
+ * 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.broker.resourcegroup;
+
+import static org.apache.pulsar.client.api.CompressionType.SNAPPY;
+import com.google.common.collect.Sets;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+import org.apache.pulsar.broker.PulsarServerException;
+import org.apache.pulsar.broker.PulsarService;
+import org.apache.pulsar.broker.ServiceConfiguration;
+import org.apache.pulsar.broker.service.resource.usage.ResourceUsageInfo;
+import org.apache.pulsar.client.admin.PulsarAdmin;
+import org.apache.pulsar.client.admin.PulsarAdminException;
+import org.apache.pulsar.client.api.Message;
+import org.apache.pulsar.client.api.MessageId;
+import org.apache.pulsar.client.api.Producer;
+import org.apache.pulsar.client.api.PulsarClient;
+import org.apache.pulsar.client.api.PulsarClientException;
+import org.apache.pulsar.client.api.Reader;
+import org.apache.pulsar.client.api.ReaderListener;
+import org.apache.pulsar.common.allocator.PulsarByteBufAllocator;
+import org.apache.pulsar.common.naming.TopicName;
+import org.apache.pulsar.common.policies.data.TenantInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Resource Usage Transport Manager
+ *
+ * <P>Module to exchange usage information with other brokers. Implements a task to periodically.
+ * <P>publish the usage as well as handlers to process the usage info from other brokers.
+ *
+ * @see <a href="https://github.com/apache/pulsar/wiki/PIP-82%3A-Tenant-and-namespace-level-rate-limiting">Global-quotas</a>
+ *
+ */
+public class ResourceUsageTransportManager implements AutoCloseable {
+
+    private class ResourceUsageWriterTask implements Runnable, AutoCloseable {
+        private final Producer<byte[]> producer;
+        private final ScheduledFuture<?> resourceUsagePublishTask;
+
+        private Producer<byte[]> createProducer() throws PulsarClientException {
+            final int publishDelayMilliSecs = 10;
+            final int sendTimeoutSecs = 10;
+
+            return pulsarClient.newProducer()
+                    .topic(pulsarService.getConfig().getResourceUsageTransportPublishTopicName())
+                    .batchingMaxPublishDelay(publishDelayMilliSecs, TimeUnit.MILLISECONDS)
+                    .sendTimeout(sendTimeoutSecs, TimeUnit.SECONDS)
+                    .blockIfQueueFull(false)
+                    .compressionType(SNAPPY)

Review comment:
       Just wondering, if there a particular reason snappy was chosen as the compression algorithm?




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