io.seata.saga.engine.pcext.utils

Class LoopTaskUtils

java.lang.Object

io.seata.saga.engine.pcext.utils.LoopTaskUtils

public class LoopTaskUtils
extends Object

Loop Task Util

Field Summary

Fields

Modifier and Type	Field and Description
static String	LOOP_STATE_NAME_PATTERN

Constructor Summary

Constructors

Constructor and Description
LoopTaskUtils()

Method Summary

Modifier and Type	Method and Description
static int	acquireNextLoopCounter(ProcessContext context)
static void	createLoopCounterContext(ProcessContext context) create loop counter context
static ProcessContext	createLoopEventContext(ProcessContext context, int loopCounter) create context for async publish
static String	decideCurrentExceptionRoute(List<ProcessContext> subContextList, StateMachine stateMachine) decide current exception route for loop publish over
static StateInstance	findOutLastNeedForwardStateInstance(ProcessContext context)
static StateInstance	findOutLastRetriedStateInstance(StateMachineInstance stateMachineInstance, String stateName)
static String	generateLoopStateName(ProcessContext context, String stateName) generate loop state name like stateName-fork-1
static TaskState.Loop	getLoopConfig(ProcessContext context, State currentState) get Loop Config from State
static boolean	isCompletionConditionSatisfied(ProcessContext context) check if satisfied completion condition
static boolean	isForSubStateMachineForward(ProcessContext context) forward with subStateMachine should check each loop state's status
static boolean	matchLoop(State state) match if state has loop property
static void	putContextToParent(ProcessContext context, List<ProcessContext> subContextList, State state) put loop out params to parent context
static void	reloadLoopContext(ProcessContext context, String forwardStateName) reload loop counter context while forward
static int	reloadLoopCounter(String stateName) reload context loop counter from stateInstName

Methods inherited from class java.lang.Object

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

Field Detail

LOOP_STATE_NAME_PATTERN

public static final String LOOP_STATE_NAME_PATTERN

See Also:

Constant Field Values

Constructor Detail

LoopTaskUtils

public LoopTaskUtils()

Method Detail

getLoopConfig

public static TaskState.Loop getLoopConfig(ProcessContext context,
                                           State currentState)

get Loop Config from State

Parameters:

context - the process context

currentState - the task state

Returns:

currentState loop config if satisfied, else null

matchLoop

public static boolean matchLoop(State state)

match if state has loop property

Parameters:

state - the state

Returns:

the boolean

createLoopCounterContext

public static void createLoopCounterContext(ProcessContext context)

create loop counter context

Parameters:

context - the process context

reloadLoopContext

public static void reloadLoopContext(ProcessContext context,
                                     String forwardStateName)

reload loop counter context while forward

Parameters:

context - the process context

forwardStateName - the forward state name

createLoopEventContext

public static ProcessContext createLoopEventContext(ProcessContext context,
                                                    int loopCounter)

create context for async publish

Parameters:

context - the process context

loopCounter - acquire new counter if is -1, else means a specific loop-counter

Returns:

the process context

findOutLastNeedForwardStateInstance

public static StateInstance findOutLastNeedForwardStateInstance(ProcessContext context)

findOutLastRetriedStateInstance

public static StateInstance findOutLastRetriedStateInstance(StateMachineInstance stateMachineInstance,
                                                            String stateName)

isCompletionConditionSatisfied

public static boolean isCompletionConditionSatisfied(ProcessContext context)

check if satisfied completion condition

Parameters:

context - the process context

Returns:

the boolean

acquireNextLoopCounter

public static int acquireNextLoopCounter(ProcessContext context)

generateLoopStateName

public static String generateLoopStateName(ProcessContext context,
                                           String stateName)

generate loop state name like stateName-fork-1

Parameters:

stateName - the state name

context - the process context

Returns:

the loop state name

reloadLoopCounter

public static int reloadLoopCounter(String stateName)

reload context loop counter from stateInstName

Parameters:

stateName - the state name

Returns:

the reloaded loop counter

See Also:

generateLoopStateName(ProcessContext, String)

putContextToParent

public static void putContextToParent(ProcessContext context,
                                      List<ProcessContext> subContextList,
                                      State state)

put loop out params to parent context

Parameters:

context - the process context

isForSubStateMachineForward

public static boolean isForSubStateMachineForward(ProcessContext context)

forward with subStateMachine should check each loop state's status

Parameters:

context - the process context

Returns:

the boolean

decideCurrentExceptionRoute

public static String decideCurrentExceptionRoute(List<ProcessContext> subContextList,
                                                 StateMachine stateMachine)

decide current exception route for loop publish over

Parameters:

subContextList - the sub context list

stateMachine - the state machine

Returns:

route if current exception route not null