io.seata.saga.engine.strategy

Interface StatusDecisionStrategy

All Known Implementing Classes:

DefaultStatusDecisionStrategy

public interface StatusDecisionStrategy

Default state machine execution status decision strategy. The strategy is to traverse the execution state of each state executed. If all state are successfully executed the state machine is successfully executed, if there is a state that fails to execute which is for data update, the state machine execution status is considered to be UN (the data is inconsistent), otherwise FA (failure: no data inconsistency)

Method Summary

Modifier and Type	Method and Description
boolean	decideMachineForwardExecutionStatus(StateMachineInstance stateMachineInstance, Exception exp, boolean specialPolicy) Determine the forward execution state of the state machine
void	decideOnEndState(ProcessContext context, StateMachineInstance stateMachineInstance, Exception exp) Determine state machine execution status when executing to EndState
void	decideOnTaskStateFail(ProcessContext context, StateMachineInstance stateMachineInstance, Exception exp) Determine state machine execution status when executing TaskState error

Method Detail

decideOnEndState

void decideOnEndState(ProcessContext context,
                      StateMachineInstance stateMachineInstance,
                      Exception exp)

Determine state machine execution status when executing to EndState

Parameters:

context - the process context

stateMachineInstance - the state machine instance

exp - exception

decideOnTaskStateFail

void decideOnTaskStateFail(ProcessContext context,
                           StateMachineInstance stateMachineInstance,
                           Exception exp)

Determine state machine execution status when executing TaskState error

Parameters:

context -

stateMachineInstance -

exp -

decideMachineForwardExecutionStatus

boolean decideMachineForwardExecutionStatus(StateMachineInstance stateMachineInstance,
                                            Exception exp,
                                            boolean specialPolicy)

Determine the forward execution state of the state machine

Parameters:

stateMachineInstance - the state machine instance

exp - the exception

specialPolicy - is special policy

Returns:

the boolean