/
EntryFilter.java
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/
EntryFilter.java
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/**
* 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.service.plugin;
import org.apache.bookkeeper.mledger.Entry;
public interface EntryFilter {
/**
* 1. Broker determines whether to filter out this entry based on the return value of this method.
* 2. Do not deserialize the entire entry in this method,
* which has a great impact on the broker's memory and CPU.
* 3. Return ACCEPT or null will be regarded as ACCEPT.
* @param entry
* @param context
* @return
*/
FilterResult filterEntry(Entry entry, FilterContext context);
/**
* close the entry filter.
*/
void close();
enum FilterResult {
/**
* deliver to the consumer.
*/
ACCEPT,
/**
* skip the message.
*/
REJECT,
}
}