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

Class 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 Detail

      • CassandraAggregationRepository

        public CassandraAggregationRepository()

      • CassandraAggregationRepository

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

    • Method Detail

      • 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)

      • 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)