Package org.apache.pinot.broker.requesthandler

Class BrokerRequestHandlerDelegate

java.lang.Object

org.apache.pinot.broker.requesthandler.BrokerRequestHandlerDelegate

All Implemented Interfaces:

BrokerRequestHandler

public class BrokerRequestHandlerDelegate
extends Object
implements BrokerRequestHandler

BrokerRequestHandlerDelegate delegates the inbound broker request to one of the enabled BrokerRequestHandler based on the requested handle type. {@see: @CommonConstant

Constructor Summary

Constructors

Constructor	Description
BrokerRequestHandlerDelegate(String brokerId, BrokerRequestHandler singleStageBrokerRequestHandler, BrokerRequestHandler multiStageWorkerRequestHandler, org.apache.pinot.common.metrics.BrokerMetrics brokerMetrics)

Method Summary

Modifier and Type	Method	Description
boolean	cancelQuery(long queryId, int timeoutMs, Executor executor, org.apache.commons.httpclient.HttpConnectionManager connMgr, Map<String,Integer> serverResponses)	Cancel a query as identified by the queryId.
Map<Long,String>	getRunningQueries()
org.apache.pinot.common.response.BrokerResponse	handleRequest(com.fasterxml.jackson.databind.JsonNode request, org.apache.pinot.sql.parsers.SqlNodeAndOptions sqlNodeAndOptions, RequesterIdentity requesterIdentity, org.apache.pinot.spi.trace.RequestContext requestContext)
void	shutDown()
void	start()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.broker.requesthandler.BrokerRequestHandler

handleRequest

Constructor Detail

BrokerRequestHandlerDelegate

public BrokerRequestHandlerDelegate(String brokerId,
                                    BrokerRequestHandler singleStageBrokerRequestHandler,
                                    @Nullable
                                    BrokerRequestHandler multiStageWorkerRequestHandler,
                                    org.apache.pinot.common.metrics.BrokerMetrics brokerMetrics)

Method Detail

start

public void start()

Specified by:

start in interface BrokerRequestHandler

shutDown

public void shutDown()

Specified by:

shutDown in interface BrokerRequestHandler

handleRequest

public org.apache.pinot.common.response.BrokerResponse handleRequest(com.fasterxml.jackson.databind.JsonNode request,
                                                                     @Nullable
                                                                     org.apache.pinot.sql.parsers.SqlNodeAndOptions sqlNodeAndOptions,
                                                                     @Nullable
                                                                     RequesterIdentity requesterIdentity,
                                                                     org.apache.pinot.spi.trace.RequestContext requestContext)
                                                              throws Exception

Specified by:

handleRequest in interface BrokerRequestHandler

Throws:

Exception

getRunningQueries

public Map<Long,String> getRunningQueries()

Specified by:

getRunningQueries in interface BrokerRequestHandler

cancelQuery

public boolean cancelQuery(long queryId,
                           int timeoutMs,
                           Executor executor,
                           org.apache.commons.httpclient.HttpConnectionManager connMgr,
                           Map<String,Integer> serverResponses)
                    throws Exception

Description copied from interface: BrokerRequestHandler

Cancel a query as identified by the queryId. This method is non-blocking so the query may still run for a while after calling this method. This cancel method can be called multiple times.

Specified by:

cancelQuery in interface BrokerRequestHandler

Parameters:

queryId - the unique Id assigned to the query by the broker

timeoutMs - timeout to wait for servers to respond the cancel requests

executor - to send cancel requests to servers in parallel

connMgr - to provide the http connections

serverResponses - to collect cancel responses from all servers if a map is provided

Returns:

true if there is a running query for the given queryId.

Throws:

Exception