aloyszhang commented on code in PR #9805: URL: https://github.com/apache/inlong/pull/9805#discussion_r1522633837
########## inlong-agent/agent-plugins/src/main/java/org/apache/inlong/agent/plugin/sources/PulsarSource.java: ########## @@ -0,0 +1,312 @@ +/* + * 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.inlong.agent.plugin.sources; + +import org.apache.inlong.agent.common.AgentThreadFactory; +import org.apache.inlong.agent.conf.InstanceProfile; +import org.apache.inlong.agent.conf.TaskProfile; +import org.apache.inlong.agent.constant.CycleUnitType; +import org.apache.inlong.agent.core.task.MemoryManager; +import org.apache.inlong.agent.except.FileException; +import org.apache.inlong.agent.message.DefaultMessage; +import org.apache.inlong.agent.metrics.audit.AuditUtils; +import org.apache.inlong.agent.plugin.Message; +import org.apache.inlong.agent.plugin.file.Reader; +import org.apache.inlong.agent.plugin.sources.file.AbstractSource; +import org.apache.inlong.agent.utils.AgentUtils; + +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; +import org.apache.commons.codec.digest.DigestUtils; +import org.apache.commons.lang3.ObjectUtils; +import org.apache.pulsar.client.api.Consumer; +import org.apache.pulsar.client.api.PulsarClient; +import org.apache.pulsar.client.api.PulsarClientException; +import org.apache.pulsar.client.api.Schema; +import org.apache.pulsar.client.api.SubscriptionInitialPosition; +import org.apache.pulsar.client.api.SubscriptionType; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.BlockingQueue; +import java.util.concurrent.LinkedBlockingQueue; +import java.util.concurrent.SynchronousQueue; +import java.util.concurrent.ThreadPoolExecutor; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicLong; + +import static org.apache.inlong.agent.constant.CommonConstants.DEFAULT_PROXY_PACKAGE_MAX_SIZE; +import static org.apache.inlong.agent.constant.CommonConstants.PROXY_KEY_DATA; +import static org.apache.inlong.agent.constant.CommonConstants.PROXY_KEY_STREAM_ID; +import static org.apache.inlong.agent.constant.CommonConstants.PROXY_PACKAGE_MAX_SIZE; +import static org.apache.inlong.agent.constant.CommonConstants.PROXY_SEND_PARTITION_KEY; +import static org.apache.inlong.agent.constant.FetcherConstants.AGENT_GLOBAL_READER_QUEUE_PERMIT; +import static org.apache.inlong.agent.constant.FetcherConstants.AGENT_GLOBAL_READER_SOURCE_PERMIT; +import static org.apache.inlong.agent.constant.TaskConstants.OFFSET; +import static org.apache.inlong.agent.constant.TaskConstants.TASK_CYCLE_UNIT; +import static org.apache.inlong.agent.constant.TaskConstants.TASK_PULSAR_RESET_TIME; +import static org.apache.inlong.agent.constant.TaskConstants.TASK_PULSAR_SCAN_STARTUP_MODE; +import static org.apache.inlong.agent.constant.TaskConstants.TASK_PULSAR_SERVICE_URL; + +public class PulsarSource extends AbstractSource { + + @Data + @AllArgsConstructor + @NoArgsConstructor + private class SourceData { + + private byte[] data; + private Long offset; + } + + private static final Logger LOGGER = LoggerFactory.getLogger(PulsarSource.class); + private static final ThreadPoolExecutor EXECUTOR_SERVICE = new ThreadPoolExecutor( + 0, Integer.MAX_VALUE, + 1L, TimeUnit.SECONDS, + new SynchronousQueue<>(), + new AgentThreadFactory("pulsar-source")); + private BlockingQueue<SourceData> queue; + public InstanceProfile profile; + private int maxPackSize; + private String taskId; + private String instanceId; + private String topic; + private String serviceUrl; + private String scanStartupMode; + private PulsarClient pulsarClient; + private Long timestamp; + Map<Integer, Long> partitionOffsets = new HashMap<>(); + private volatile boolean running = false; + private volatile boolean runnable = true; + private volatile AtomicLong emptyCount = new AtomicLong(0); + + private final Integer CACHE_QUEUE_SIZE = 100000; + private final Integer READ_WAIT_TIMEOUT_MS = 10; + private final Integer EMPTY_CHECK_COUNT_AT_LEAST = 5 * 60; + private final Integer BATCH_TOTAL_LEN = 1024 * 1024; + + private final Integer CORE_THREAD_PRINT_INTERVAL_MS = 1000; + private boolean isRealTime = false; + private boolean isRestoreFromDB = false; + + public PulsarSource() { + } + + @Override + public void init(InstanceProfile profile) { + try { + LOGGER.info("PulsarSource init: {}", profile.toJsonStr()); + this.profile = profile; + super.init(profile); + String cycleUnit = profile.get(TASK_CYCLE_UNIT); + if (cycleUnit.compareToIgnoreCase(CycleUnitType.REAL_TIME) == 0) { + isRealTime = true; + cycleUnit = CycleUnitType.HOUR; + } + queue = new LinkedBlockingQueue<>(CACHE_QUEUE_SIZE); + maxPackSize = profile.getInt(PROXY_PACKAGE_MAX_SIZE, DEFAULT_PROXY_PACKAGE_MAX_SIZE); + taskId = profile.getTaskId(); + instanceId = profile.getInstanceId(); + topic = profile.getInstanceId(); + serviceUrl = profile.get(TASK_PULSAR_SERVICE_URL); + scanStartupMode = profile.get(TASK_PULSAR_SCAN_STARTUP_MODE); + timestamp = profile.getLong(TASK_PULSAR_RESET_TIME, 0); + pulsarClient = PulsarClient.builder().serviceUrl(serviceUrl).build(); + + EXECUTOR_SERVICE.execute(run()); + } catch (Exception ex) { + stopRunning(); + throw new FileException("error init stream for " + topic, ex); + } + } + + private Runnable run() { + return () -> { + AgentThreadFactory.nameThread("pulsar-source-" + taskId + "-" + instanceId); + running = true; + try { + try (Consumer<byte[]> consumer = pulsarClient.newConsumer(Schema.BYTES) + .topic(topic) + .subscriptionName("inlong-agent-" + taskId) + .subscriptionInitialPosition(SubscriptionInitialPosition.valueOf(scanStartupMode)) + .subscriptionType(SubscriptionType.Exclusive) + .subscribe()) { + + if (!isRestoreFromDB && timestamp != 0L) { + consumer.seek(timestamp); + LOGGER.info("Reset consume from {}", timestamp); + } else { + LOGGER.info("Skip to reset consume"); + } + + doRun(consumer); + } + } catch (Throwable e) { + LOGGER.error("do run error maybe pulsar client is configured incorrectly: ", e); + } + running = false; + }; + } + + private void doRun(Consumer<byte[]> consumer) throws PulsarClientException { + long lastPrintTime = 0; + while (isRunnable()) { + boolean suc = waitForPermit(AGENT_GLOBAL_READER_SOURCE_PERMIT, BATCH_TOTAL_LEN); + if (!suc) { + break; + } + org.apache.pulsar.client.api.Message<byte[]> message = consumer.receive(0, TimeUnit.MILLISECONDS); Review Comment: If the timeout parameter is 0 and the topic has no messages backlog, `message` will be returned as null, then loop the next round immediately, this may cause high CPU load. -- This is an automated message from the Apache Git Service. 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