Package org.deltafi.common.action

Class ActionEventQueue

java.lang.Object

org.deltafi.common.action.ActionEventQueue

public class ActionEventQueue
extends Object

Service for pushing and popping action events to a redis queue.

Constructor Summary

Constructors

Constructor	Description
ActionEventQueue(ActionEventQueueProperties actionEventQueueProperties, int poolSize)

Method Summary

Modifier and Type	Method	Description
static ActionEvent	convertEvent(String element)
static ActionInput	convertInput(String element)
void	drop(List<String> actionNames)
Set<String>	keys()
void	putActions(List<ActionInput> actionInputs, boolean checkUnique)	Puts the given action inputs into the appropriate Redis queue(s).
void	putResult(ActionEvent result, String returnAddress)	Submit a result object for action processing
void	setHeartbeat(String key)
long	size(String key)
ActionInput	takeAction(String actionClassName)	Request an ActionInput object from the ActionEvent queue for the specified action
ActionEvent	takeResult(String returnAddress)

Methods inherited from class java.lang.Object

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

Constructor Details

ActionEventQueue

public ActionEventQueue(ActionEventQueueProperties actionEventQueueProperties,
 int poolSize)
                 throws URISyntaxException

Throws:

URISyntaxException

Method Details

putActions

public void putActions(List<ActionInput> actionInputs,
 boolean checkUnique)

Puts the given action inputs into the appropriate Redis queue(s). If the checkUnique parameter is set to true, this method will ensure that no other item with the same 'did' field value already exists in the queue before adding an action input. Note that checking for uniqueness is an expensive operation as it involves scanning the Redis set, which can be slow and resource-intensive, particularly for larger sets. Therefore, it's recommended to use this option only in requeue scenarios. If the conversion of an action input to JSON fails, the method will log an error and skip that input.

Parameters:

actionInputs - a list of action inputs to be queued

checkUnique - if true, the method will check for uniqueness of 'did' field values before queuing an action input; if false, the method will queue all action inputs without checking for uniqueness

takeAction

public ActionInput takeAction(String actionClassName)
                       throws com.fasterxml.jackson.core.JsonProcessingException

Request an ActionInput object from the ActionEvent queue for the specified action

Parameters:

actionClassName - Name of action for Action event request

Returns:

next Action on the queue for the given action name

Throws:

com.fasterxml.jackson.core.JsonProcessingException - if the incoming event cannot be serialized

putResult

public void putResult(ActionEvent result,
 String returnAddress)
               throws com.fasterxml.jackson.core.JsonProcessingException

Submit a result object for action processing

Parameters:

result - ActionEventInput object for the result to be posted to the action queue

Throws:

com.fasterxml.jackson.core.JsonProcessingException - if the outgoing event cannot be deserialized

takeResult

public ActionEvent takeResult(String returnAddress)
                       throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

convertEvent

public static ActionEvent convertEvent(String element)
                                throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

convertInput

public static ActionInput convertInput(String element)
                                throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

setHeartbeat

public void setHeartbeat(String key)

drop

public void drop(List<String> actionNames)

keys

public Set<String> keys()

size

public long size(String key)