io.druid.firehose.rocketmq

Class RocketMQFirehoseFactory

java.lang.Object

io.druid.firehose.rocketmq.RocketMQFirehoseFactory

All Implemented Interfaces:

FirehoseFactory<ByteBufferInputRowParser>

public class RocketMQFirehoseFactory
extends Object
implements FirehoseFactory<ByteBufferInputRowParser>

Constructor Summary

Constructors

Constructor and Description
RocketMQFirehoseFactory(Properties consumerProps, String consumerGroup, List<String> feed, String pullBatchSize)

Method Summary

Modifier and Type	Method and Description
Firehose	connect(ByteBufferInputRowParser byteBufferInputRowParser, File temporaryDirectory) Initialization method that connects up the fire hose.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.druid.data.input.FirehoseFactory

connect

Constructor Detail

RocketMQFirehoseFactory

public RocketMQFirehoseFactory(Properties consumerProps,
                               String consumerGroup,
                               List<String> feed,
                               String pullBatchSize)

Method Detail

connect

public Firehose connect(ByteBufferInputRowParser byteBufferInputRowParser,
                        File temporaryDirectory)
                 throws IOException,
                        ParseException

Description copied from interface: FirehoseFactory

Initialization method that connects up the fire hose. If this method returns successfully it should be safe to call hasMore() on the returned Firehose (which might subsequently block).

If this method returns null, then any attempt to call hasMore(), nextRow(), commit() and close() on the return value will throw a surprising NPE. Throwing IOException on connection failure or runtime exception on invalid configuration is preferred over returning null.

Some fire hoses like PrefetchableTextFilesFirehoseFactory may use a temporary directory to cache data in it.

Specified by:

connect in interface FirehoseFactory<ByteBufferInputRowParser>

Parameters:

byteBufferInputRowParser - an input row parser

temporaryDirectory - a directory where temporary files are stored

Throws:

IOException

ParseException