org.apache.camel.processor.idempotent.cassandra

Class CassandraIdempotentRepository<K>

java.lang.Object

org.apache.camel.support.ServiceSupport

org.apache.camel.processor.idempotent.cassandra.CassandraIdempotentRepository<K>

Type Parameters:

K - Message Id

All Implemented Interfaces:

org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.spi.IdempotentRepository<K>, org.apache.camel.StatefulService, org.apache.camel.SuspendableService

Direct Known Subclasses:

NamedCassandraIdempotentRepository

public class CassandraIdempotentRepository<K>
extends org.apache.camel.support.ServiceSupport
implements org.apache.camel.spi.IdempotentRepository<K>

Implementation of IdempotentRepository using Cassandra table to store message ids. Advice: use LeveledCompaction for this table and tune read/write consistency levels. Warning: Cassandra is not the best tool for queuing use cases See http://www.datastax.com/dev/blog/cassandra-anti-patterns-queues-and-queue-like-datasets

Field Summary

Fields inherited from class org.apache.camel.support.ServiceSupport

shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending

Constructor Summary

Constructors

Constructor and Description
CassandraIdempotentRepository()
CassandraIdempotentRepository(com.datastax.driver.core.Cluster cluster, String keyspace)
CassandraIdempotentRepository(com.datastax.driver.core.Session session)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(K key)
void	clear()
boolean	confirm(K key)
boolean	contains(K key)
protected void	doStart()
protected void	doStop()
String[]	getPKColumns()
protected Object[]	getPKValues(K key)
Object[]	getPrefixPKValues()
com.datastax.driver.core.ConsistencyLevel	getReadConsistencyLevel()
com.datastax.driver.core.Session	getSession()
String	getTable()
Integer	getTtl()
com.datastax.driver.core.ConsistencyLevel	getWriteConsistencyLevel()
protected void	initClearStatement()
protected void	initDeleteStatement()
protected void	initInsertStatement()
protected void	initSelectStatement()
protected boolean	isApplied(com.datastax.driver.core.ResultSet resultSet)
boolean	remove(K key)
void	setPKColumns(String... pkColumns)
void	setPrefixPKValues(Object[] prefixPKValues)
void	setReadConsistencyLevel(com.datastax.driver.core.ConsistencyLevel readConsistencyLevel)
void	setSession(com.datastax.driver.core.Session session)
void	setTable(String table)
void	setTtl(Integer ttl)
void	setWriteConsistencyLevel(com.datastax.driver.core.ConsistencyLevel writeConsistencyLevel)

Methods inherited from class org.apache.camel.support.ServiceSupport

doResume, doShutdown, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.Service

start, stop

Constructor Detail

CassandraIdempotentRepository

public CassandraIdempotentRepository()

CassandraIdempotentRepository

public CassandraIdempotentRepository(com.datastax.driver.core.Session session)

CassandraIdempotentRepository

public CassandraIdempotentRepository(com.datastax.driver.core.Cluster cluster,
                             String keyspace)

Method Detail

isApplied

protected final boolean isApplied(com.datastax.driver.core.ResultSet resultSet)

getPKValues

protected Object[] getPKValues(K key)

doStart

protected void doStart()
                throws Exception

Specified by:

doStart in class org.apache.camel.support.ServiceSupport

Throws:

Exception

doStop

protected void doStop()
               throws Exception

Specified by:

doStop in class org.apache.camel.support.ServiceSupport

Throws:

Exception

initInsertStatement

protected void initInsertStatement()

add

public boolean add(K key)

Specified by:

add in interface org.apache.camel.spi.IdempotentRepository<K>

initSelectStatement

protected void initSelectStatement()

contains

public boolean contains(K key)

Specified by:

contains in interface org.apache.camel.spi.IdempotentRepository<K>

confirm

public boolean confirm(K key)

Specified by:

confirm in interface org.apache.camel.spi.IdempotentRepository<K>

initDeleteStatement

protected void initDeleteStatement()

remove

public boolean remove(K key)

Specified by:

remove in interface org.apache.camel.spi.IdempotentRepository<K>

initClearStatement

protected void initClearStatement()

clear

public void clear()

Specified by:

clear in interface org.apache.camel.spi.IdempotentRepository<K>

getSession

public com.datastax.driver.core.Session getSession()

setSession

public void setSession(com.datastax.driver.core.Session session)

getTable

public String getTable()

setTable

public void setTable(String table)

getPKColumns

public String[] getPKColumns()

setPKColumns

public void setPKColumns(String... pkColumns)

getTtl

public Integer getTtl()

setTtl

public void setTtl(Integer ttl)

getWriteConsistencyLevel

public com.datastax.driver.core.ConsistencyLevel getWriteConsistencyLevel()

setWriteConsistencyLevel

public void setWriteConsistencyLevel(com.datastax.driver.core.ConsistencyLevel writeConsistencyLevel)

getReadConsistencyLevel

public com.datastax.driver.core.ConsistencyLevel getReadConsistencyLevel()

setReadConsistencyLevel

public void setReadConsistencyLevel(com.datastax.driver.core.ConsistencyLevel readConsistencyLevel)

getPrefixPKValues

public Object[] getPrefixPKValues()

setPrefixPKValues

public void setPrefixPKValues(Object[] prefixPKValues)