diff options
Diffstat (limited to 'external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeLimit.scala')
-rw-r--r-- | external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeLimit.scala | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeLimit.scala b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeLimit.scala new file mode 100644 index 0000000000..80a026f4f5 --- /dev/null +++ b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetRangeLimit.scala @@ -0,0 +1,51 @@ +/* + * 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.spark.sql.kafka010 + +import org.apache.kafka.common.TopicPartition + +/** + * Objects that represent desired offset range limits for starting, + * ending, and specific offsets. + */ +private[kafka010] sealed trait KafkaOffsetRangeLimit + +/** + * Represents the desire to bind to the earliest offsets in Kafka + */ +private[kafka010] case object EarliestOffsetRangeLimit extends KafkaOffsetRangeLimit + +/** + * Represents the desire to bind to the latest offsets in Kafka + */ +private[kafka010] case object LatestOffsetRangeLimit extends KafkaOffsetRangeLimit + +/** + * Represents the desire to bind to specific offsets. A offset == -1 binds to the + * latest offset, and offset == -2 binds to the earliest offset. + */ +private[kafka010] case class SpecificOffsetRangeLimit( + partitionOffsets: Map[TopicPartition, Long]) extends KafkaOffsetRangeLimit + +private[kafka010] object KafkaOffsetRangeLimit { + /** + * Used to denote offset range limits that are resolved via Kafka + */ + val LATEST = -1L // indicates resolution to the latest offset + val EARLIEST = -2L // indicates resolution to the earliest offset +} |