io.kgraph.pregel

Class PregelComputation<K,VV,EV,Message>

java.lang.Object

io.kgraph.pregel.PregelComputation<K,VV,EV,Message>

All Implemented Interfaces:

Closeable, AutoCloseable

public class PregelComputation<K,VV,EV,Message>
extends Object
implements Closeable

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	PregelComputation.AggregatorWrapper<T>
static class	PregelComputation.MapOfLongMaxAggregator

Field Summary

Fields

Modifier and Type	Field and Description
static String	ALL_PARTITIONS
static String	LAST_WRITTEN_OFFSETS

Constructor Summary

Constructors

Constructor and Description

PregelComputation(String hostAndPort, String applicationId, String bootstrapServers, org.apache.curator.framework.CuratorFramework curator, String verticesTopic, String edgesGroupedBySourceTopic, Map<org.apache.kafka.common.TopicPartition,Long> graphOffsets, GraphSerialized<K,VV,EV> serialized, String solutionSetTopic, String solutionSetStore, String workSetTopic, int numPartitions, Map<String,?> configs, Optional<Message> initialMessage, ComputeFunction<K,VV,EV,Message> cf)

Method Summary

Modifier and Type	Method and Description
void	close()
Map<String,?>	configs()
org.apache.kafka.streams.kstream.KTable<K,Map<K,EV>>	edgesGroupedBySource()
CompletableFuture<org.apache.kafka.streams.kstream.KTable<K,VV>>	futureResult()
void	prepare(org.apache.kafka.streams.StreamsBuilder builder, Properties streamsConfig)
protected Map<String,?>	previousAggregates(int superstep)
org.apache.kafka.streams.kstream.KTable<K,VV>	result()
PregelState	run(int maxIterations, CompletableFuture<org.apache.kafka.streams.kstream.KTable<K,VV>> futureResult)
PregelState	state()
org.apache.kafka.streams.kstream.KTable<K,VV>	vertices()

Methods inherited from class java.lang.Object

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

Field Detail

ALL_PARTITIONS

public static final String ALL_PARTITIONS

See Also:

Constant Field Values

LAST_WRITTEN_OFFSETS

public static final String LAST_WRITTEN_OFFSETS

See Also:

Constant Field Values

Constructor Detail

PregelComputation

public PregelComputation(String hostAndPort,
                         String applicationId,
                         String bootstrapServers,
                         org.apache.curator.framework.CuratorFramework curator,
                         String verticesTopic,
                         String edgesGroupedBySourceTopic,
                         Map<org.apache.kafka.common.TopicPartition,Long> graphOffsets,
                         GraphSerialized<K,VV,EV> serialized,
                         String solutionSetTopic,
                         String solutionSetStore,
                         String workSetTopic,
                         int numPartitions,
                         Map<String,?> configs,
                         Optional<Message> initialMessage,
                         ComputeFunction<K,VV,EV,Message> cf)

Method Detail

configs

public Map<String,?> configs()

vertices

public org.apache.kafka.streams.kstream.KTable<K,VV> vertices()

edgesGroupedBySource

public org.apache.kafka.streams.kstream.KTable<K,Map<K,EV>> edgesGroupedBySource()

result

public org.apache.kafka.streams.kstream.KTable<K,VV> result()

futureResult

public CompletableFuture<org.apache.kafka.streams.kstream.KTable<K,VV>> futureResult()

prepare

public void prepare(org.apache.kafka.streams.StreamsBuilder builder,
                    Properties streamsConfig)

run

public PregelState run(int maxIterations,
                       CompletableFuture<org.apache.kafka.streams.kstream.KTable<K,VV>> futureResult)

state

public PregelState state()

previousAggregates

protected Map<String,?> previousAggregates(int superstep)

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable