Package org.apache.storm.jdbc.bolt
Class JdbcInsertBolt
- All Implemented Interfaces:
Serializable
,IBolt
,IComponent
,IRichBolt
Basic bolt for writing to any Database table.
Note: Each JdbcInsertBolt defined in a topology is tied to a specific table.
- See Also:
-
Field Summary
Fields inherited from class org.apache.storm.jdbc.bolt.AbstractJdbcBolt
collector, configKey, connectionProvider, jdbcClient, queryTimeoutSecs
-
Constructor Summary
ConstructorDescriptionJdbcInsertBolt
(ConnectionProvider connectionProvider, JdbcMapper jdbcMapper) -
Method Summary
Modifier and TypeMethodDescriptionvoid
declareOutputFields
(OutputFieldsDeclarer outputFieldsDeclarer) Declare the output schema for all the streams of this topology.void
prepare
(Map<String, Object> map, TopologyContext topologyContext, OutputCollector collector) Subclasses should call this to ensure output collector and connection provider are set up, and finally jdbcClient is initialized properly.protected void
Process a single non-tick tuple of input.withInsertQuery
(String insertQuery) withQueryTimeoutSecs
(int queryTimeoutSecs) withTableName
(String tableName) Methods inherited from class org.apache.storm.jdbc.bolt.AbstractJdbcBolt
cleanup
Methods inherited from class org.apache.storm.topology.base.BaseTickTupleAwareRichBolt
execute, onTickTuple
Methods inherited from class org.apache.storm.topology.base.BaseComponent
getComponentConfiguration
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.storm.topology.IComponent
getComponentConfiguration
-
Constructor Details
-
JdbcInsertBolt
-
-
Method Details
-
withTableName
-
withInsertQuery
-
withQueryTimeoutSecs
-
prepare
public void prepare(Map<String, Object> map, TopologyContext topologyContext, OutputCollector collector) Description copied from class:AbstractJdbcBolt
Subclasses should call this to ensure output collector and connection provider are set up, and finally jdbcClient is initialized properly. Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.This includes the:
- Specified by:
prepare
in interfaceIBolt
- Overrides:
prepare
in classAbstractJdbcBolt
- Parameters:
map
- The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.topologyContext
- This object can be used to get information about this task's place within the topology, including the task id and component id of this task, input and output information, etc.collector
- The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.
-
process
Description copied from class:BaseTickTupleAwareRichBolt
Process a single non-tick tuple of input. Implementation needs to handle ack manually. More details onIBolt.execute(Tuple)
.- Specified by:
process
in classBaseTickTupleAwareRichBolt
- Parameters:
tuple
- The input tuple to be processed.
-
declareOutputFields
Description copied from interface:IComponent
Declare the output schema for all the streams of this topology.- Parameters:
outputFieldsDeclarer
- this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream
-