/*
* 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.flink.streaming.connectors.kafka.config;
import org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartitionStateSentinel;
/**
* Startup modes for the Kafka Consumer.
*/
public enum StartupMode {
/** Start from committed offsets in ZK / Kafka brokers of a specific consumer group (default) */
GROUP_OFFSETS(KafkaTopicPartitionStateSentinel.GROUP_OFFSET),
/** Start from the earliest offset possible */
EARLIEST(KafkaTopicPartitionStateSentinel.EARLIEST_OFFSET),
/** Start from the latest offset */
LATEST(KafkaTopicPartitionStateSentinel.LATEST_OFFSET),
/**
* Start from user-supplied specific offsets for each partition.
* Since this mode will have specific offsets to start with, we do not need a sentinel value;
* using Long.MIN_VALUE as a placeholder.
*/
SPECIFIC_OFFSETS(Long.MIN_VALUE);
/** The sentinel offset value corresponding to this startup mode */
private long stateSentinel;
StartupMode(long stateSentinel) {
this.stateSentinel = stateSentinel;
}
public long getStateSentinel() {
return stateSentinel;
}
}