io.cloudslang.engine.queue.services

Interface ExecutionQueueService

public interface ExecutionQueueService

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

Method Summary

Methods

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(Date createDate, String workerId, int maxSize, ExecStatus... statuses) polls messages from 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>	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(Date createDate,
                          String workerId,
                          int maxSize,
                          ExecStatus... statuses)

polls messages from the queue

Parameters:

createDate - the first message create date

workerId - the id of the worker

maxSize - max size of the poll bulk

statuses - requested messages statuses

Returns:

a List of ExecutionMessage requested

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

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