Package org.apache.camel.processor.aggregate.cassandra

Class CassandraAggregationRepository

java.lang.Object
org.apache.camel.support.service.BaseService
org.apache.camel.support.service.ServiceSupport
org.apache.camel.processor.aggregate.cassandra.CassandraAggregationRepository
All Implemented Interfaces:
AutoCloseable, org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.spi.AggregationRepository, org.apache.camel.spi.RecoverableAggregationRepository, org.apache.camel.StatefulService, org.apache.camel.SuspendableService
Direct Known Subclasses:
NamedCassandraAggregationRepository
public class CassandraAggregationRepository extends org.apache.camel.support.service.ServiceSupport implements org.apache.camel.spi.RecoverableAggregationRepository
Implementation of AggregationRepository using Cassandra table to store exchanges. 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

  • Constructor Details

    • CassandraAggregationRepository

      public CassandraAggregationRepository()

    • CassandraAggregationRepository

      public CassandraAggregationRepository(com.datastax.oss.driver.api.core.CqlSession session)

  • Method Details

    • getPKValues

      protected Object[] getPKValues(String key)
      Generate primary key values from aggregation key.

    • doStart

      protected void doStart() throws Exception
      Overrides:
      doStart in class org.apache.camel.support.service.BaseService
      Throws:
      Exception

    • doStop

      protected void doStop() throws Exception
      Overrides:
      doStop in class org.apache.camel.support.service.BaseService
      Throws:
      Exception

    • add

      public org.apache.camel.Exchange add(org.apache.camel.CamelContext camelContext, String key, org.apache.camel.Exchange exchange)
      Insert or update exchange in aggregation table.
      Specified by:
      add in interface org.apache.camel.spi.AggregationRepository

    • initSelectStatement

      protected void initSelectStatement()

    • get

      public org.apache.camel.Exchange get(org.apache.camel.CamelContext camelContext, String key)
      Get exchange from aggregation table by aggregation key.
      Specified by:
      get in interface org.apache.camel.spi.AggregationRepository

    • confirm

      public void confirm(org.apache.camel.CamelContext camelContext, String exchangeId)
      Remove exchange by Id from aggregation table.
      Specified by:
      confirm in interface org.apache.camel.spi.AggregationRepository

    • remove

      public void remove(org.apache.camel.CamelContext camelContext, String key, org.apache.camel.Exchange exchange)
      Remove exchange by aggregation key from aggregation table.
      Specified by:
      remove in interface org.apache.camel.spi.AggregationRepository

    • selectKeyIds

      protected List<com.datastax.oss.driver.api.core.cql.Row> selectKeyIds()

    • getKeys

      public Set<String> getKeys()
      Get aggregation exchangeIds from aggregation table.
      Specified by:
      getKeys in interface org.apache.camel.spi.AggregationRepository

    • scan

      public Set<String> scan(org.apache.camel.CamelContext camelContext)
      Get exchange IDs to be recovered
      Specified by:
      scan in interface org.apache.camel.spi.RecoverableAggregationRepository
      Returns:
      Exchange IDs

    • recover

      public org.apache.camel.Exchange recover(org.apache.camel.CamelContext camelContext, String exchangeId)
      Get exchange by exchange ID. This is far from optimal.
      Specified by:
      recover in interface org.apache.camel.spi.RecoverableAggregationRepository

    • getSession

      public com.datastax.oss.driver.api.core.CqlSession getSession()

    • setSession

      public void setSession(com.datastax.oss.driver.api.core.CqlSession session)

    • getTable

      public String getTable()

    • setTable

      public void setTable(String table)

    • getPrefixPKValues

      public Object[] getPrefixPKValues()

    • setPrefixPKValues

      public void setPrefixPKValues(Object... prefixPKValues)

    • getPKColumns

      public String[] getPKColumns()

    • setPKColumns

      public void setPKColumns(String... pkColumns)

    • getExchangeIdColumn

      public String getExchangeIdColumn()

    • setExchangeIdColumn

      public void setExchangeIdColumn(String exchangeIdColumn)

    • getWriteConsistencyLevel

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

    • setWriteConsistencyLevel

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

    • getReadConsistencyLevel

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

    • setReadConsistencyLevel

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

    • getExchangeColumn

      public String getExchangeColumn()

    • setExchangeColumn

      public void setExchangeColumn(String exchangeColumnName)

    • getTtl

      public Integer getTtl()

    • setTtl

      public void setTtl(Integer ttl)

    • getRecoveryIntervalInMillis

      public long getRecoveryIntervalInMillis()
      Specified by:
      getRecoveryIntervalInMillis in interface org.apache.camel.spi.RecoverableAggregationRepository

    • setRecoveryIntervalInMillis

      public void setRecoveryIntervalInMillis(long recoveryIntervalInMillis)

    • setRecoveryInterval

      public void setRecoveryInterval(long interval, TimeUnit timeUnit)
      Specified by:
      setRecoveryInterval in interface org.apache.camel.spi.RecoverableAggregationRepository

    • setRecoveryInterval

      public void setRecoveryInterval(long recoveryIntervalInMillis)
      Specified by:
      setRecoveryInterval in interface org.apache.camel.spi.RecoverableAggregationRepository

    • isUseRecovery

      public boolean isUseRecovery()
      Specified by:
      isUseRecovery in interface org.apache.camel.spi.RecoverableAggregationRepository

    • setUseRecovery

      public void setUseRecovery(boolean useRecovery)
      Specified by:
      setUseRecovery in interface org.apache.camel.spi.RecoverableAggregationRepository

    • getDeadLetterUri

      public String getDeadLetterUri()
      Specified by:
      getDeadLetterUri in interface org.apache.camel.spi.RecoverableAggregationRepository

    • setDeadLetterUri

      public void setDeadLetterUri(String deadLetterUri)
      Specified by:
      setDeadLetterUri in interface org.apache.camel.spi.RecoverableAggregationRepository

    • getMaximumRedeliveries

      public int getMaximumRedeliveries()
      Specified by:
      getMaximumRedeliveries in interface org.apache.camel.spi.RecoverableAggregationRepository

    • setMaximumRedeliveries

      public void setMaximumRedeliveries(int maximumRedeliveries)
      Specified by:
      setMaximumRedeliveries in interface org.apache.camel.spi.RecoverableAggregationRepository

    • isAllowSerializedHeaders

      public boolean isAllowSerializedHeaders()

    • setAllowSerializedHeaders

      public void setAllowSerializedHeaders(boolean allowSerializedHeaders)