io.cloudslang.engine.queue.services

Interface ExecutionQueueService

public interface ExecutionQueueService

User: Date: 10/09/12 Responsible for the Execution Queue

Method Summary

Modifier and Type	Method and Description
int	countMessagesWithoutAckForWorker(int maxSize, long minVersionAllowed, String workerUuid) polls the count of messages that didn't receive ack for a number of recovery versions
void	enqueue(List<ExecutionMessage> messages) enqueue messages to the queue
List<ExecutionMessage>	poll(String workerId, int maxSize, ExecStatus... statuses) polls messages from the queue
List<ExecutionMessage>	pollMessagesWithoutAck(int maxSize, long minVersionAllowed) polls messages that didn't receive ack yet
List<ExecutionMessage>	pollRecovery(String workerId, int maxSize, ExecStatus... statuses) polls messages from the queue
List<ExecutionMessage>	readMessagesByStatus(int maxSize, ExecStatus... statuses)
Map<Long,Payload>	readPayloadByExecutionIds(Long... executionIds) get the payloads for requested execution ids

Method Detail

enqueue

void enqueue(List<ExecutionMessage> messages)

enqueue messages to the queue

Parameters:

messages - the messages to enqueue

poll

List<ExecutionMessage> poll(String workerId,
                            int maxSize,
                            ExecStatus... statuses)

polls messages from the queue

Parameters:

workerId - the id of the worker

maxSize - max size of the poll bulk

statuses - requested messages statuses

Returns:

a List of ExecutionMessage requested

pollRecovery

List<ExecutionMessage> pollRecovery(String workerId,
                                    int maxSize,
                                    ExecStatus... statuses)

polls messages from the queue

Parameters:

workerId - the id of the worker

maxSize - max size of the poll bulk

statuses - requested messages statuses

Returns:

a List of ExecutionMessage requested

pollMessagesWithoutAck

List<ExecutionMessage> pollMessagesWithoutAck(int maxSize,
                                              long minVersionAllowed)

polls messages that didn't receive ack yet

Parameters:

maxSize - max size of the poll bulk

minVersionAllowed - min version that the messages didn't send ack

Returns:

a List of ExecutionMessage requested

readPayloadByExecutionIds

Map<Long,Payload> readPayloadByExecutionIds(Long... executionIds)

get the payloads for requested execution ids

Parameters:

executionIds - the execution ids to get payload for

Returns:

a map of the execution id and its payload

readMessagesByStatus

List<ExecutionMessage> readMessagesByStatus(int maxSize,
                                            ExecStatus... statuses)

Parameters:

maxSize - max size of the poll bulk

statuses - the requested statuses of the messages

Returns:

a List of ExecutionMessage requested

countMessagesWithoutAckForWorker

int countMessagesWithoutAckForWorker(int maxSize,
                                     long minVersionAllowed,
                                     String workerUuid)

polls the count of messages that didn't receive ack for a number of recovery versions

Parameters:

maxSize - max size of the poll bulk

minVersionAllowed - min version that the messages didn't send ack

workerUuid - the id of the associated worker

Returns:

the number of messages that didn't receive ack for a number of recovery versions