org.apache.pulsar.client.util.MessageIdUtils Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
*
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package org.apache.pulsar.client.util;
import org.apache.pulsar.client.api.MessageId;
import org.apache.pulsar.client.impl.MessageIdImpl;
public class MessageIdUtils {
public static final long getOffset(MessageId messageId) {
MessageIdImpl msgId = (MessageIdImpl) messageId;
long ledgerId = msgId.getLedgerId();
long entryId = msgId.getEntryId();
// Combine ledger id and entry id to form offset
// Use less than 32 bits to represent entry id since it will get
// rolled over way before overflowing the max int range
long offset = (ledgerId << 28) | entryId;
return offset;
}
public static final MessageId getMessageId(long offset) {
// Demultiplex ledgerId and entryId from offset
long ledgerId = offset >>> 28;
long entryId = offset & 0x0F_FF_FF_FFL;
return new MessageIdImpl(ledgerId, entryId, -1);
}
}