public class Decision extends Object implements Serializable, Cloneable
Specifies a decision made by the decider. A decision can be one of these types:
TimerCanceled
event in the history.WorkflowExecutionCanceled
event in the history.WorkflowExecutionCompleted
event in the history .WorkflowExecutionContinuedAsNew
event is
recorded in the history.WorkflowExecutionFailed
event in the history.MarkerRecorded
event in the
history. Markers can be used for adding custom information in the history for
instance to let deciders know that they do not need to look at the history
beyond the marker event.RequestCancelExternalWorkflowExecutionInitiated
event in the
history.SignalExternalWorkflowExecutionInitiated
event in the history.StartChildWorkflowExecutionInitiated
event in the history. The
child workflow execution is a separate workflow execution with its own
history.TimerStarted
event in the history. This timer will fire after
the specified delay and record a TimerFired
event.Access Control
If you grant permission to use RespondDecisionTaskCompleted
, you
can use IAM policies to express permissions for the list of decisions
returned by this action as if they were members of the API. Treating
decisions as a pseudo API maintains a uniform conceptual model and helps keep
policies readable. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
Decision Failure
Decisions can fail for several reasons
One of the following events might be added to the history to indicate an error. The event attribute's cause parameter indicates the cause. If cause is set to OPERATION_NOT_PERMITTED, the decision failed because it lacked sufficient permissions. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows.
workflowID
specified in the decision was incorrect.workflowID
specified in the decision was incorrect.The preceding error events might occur due to an error in the decider logic, which might put the workflow execution in an unstable state The cause field in the event structure for the error event indicates the cause of the error.
CompleteWorkflowExecution
, FailWorkflowExecution
,
CancelWorkflowExecution
and
ContinueAsNewWorkflowExecution
. An UnhandledDecision fault will
be returned if a workflow closing decision is specified and a signal or
activity event had been added to the history while the decision task was
being performed by the decider. Unlike the above situations which are logic
issues, this fault is always possible because of race conditions in a
distributed system. The right action here is to call
RespondDecisionTaskCompleted without any decisions. This would result
in another decision task with these new events included in the history. The
decider should handle the new events and may decide to close the workflow
execution.How to code a decision
You code a decision by first setting the decision type field to one of the above decision values, and then set the corresponding attributes field shown below:
Constructor and Description |
---|
Decision() |
Modifier and Type | Method and Description |
---|---|
Decision |
clone() |
boolean |
equals(Object obj) |
CancelTimerDecisionAttributes |
getCancelTimerDecisionAttributes()
Provides details of the
CancelTimer decision. |
CancelWorkflowExecutionDecisionAttributes |
getCancelWorkflowExecutionDecisionAttributes()
Provides details of the
CancelWorkflowExecution decision. |
CompleteWorkflowExecutionDecisionAttributes |
getCompleteWorkflowExecutionDecisionAttributes()
Provides details of the
CompleteWorkflowExecution decision. |
ContinueAsNewWorkflowExecutionDecisionAttributes |
getContinueAsNewWorkflowExecutionDecisionAttributes()
Provides details of the
ContinueAsNewWorkflowExecution
decision. |
String |
getDecisionType()
Specifies the type of the decision.
|
FailWorkflowExecutionDecisionAttributes |
getFailWorkflowExecutionDecisionAttributes()
Provides details of the
FailWorkflowExecution decision. |
RecordMarkerDecisionAttributes |
getRecordMarkerDecisionAttributes()
Provides details of the
RecordMarker decision. |
RequestCancelActivityTaskDecisionAttributes |
getRequestCancelActivityTaskDecisionAttributes()
Provides details of the
RequestCancelActivityTask decision. |
RequestCancelExternalWorkflowExecutionDecisionAttributes |
getRequestCancelExternalWorkflowExecutionDecisionAttributes()
Provides details of the
RequestCancelExternalWorkflowExecution decision. |
ScheduleActivityTaskDecisionAttributes |
getScheduleActivityTaskDecisionAttributes()
Provides details of the
ScheduleActivityTask decision. |
ScheduleLambdaFunctionDecisionAttributes |
getScheduleLambdaFunctionDecisionAttributes() |
SignalExternalWorkflowExecutionDecisionAttributes |
getSignalExternalWorkflowExecutionDecisionAttributes()
Provides details of the
SignalExternalWorkflowExecution
decision. |
StartChildWorkflowExecutionDecisionAttributes |
getStartChildWorkflowExecutionDecisionAttributes()
Provides details of the
StartChildWorkflowExecution
decision. |
StartTimerDecisionAttributes |
getStartTimerDecisionAttributes()
Provides details of the
StartTimer decision. |
int |
hashCode() |
void |
setCancelTimerDecisionAttributes(CancelTimerDecisionAttributes cancelTimerDecisionAttributes)
Provides details of the
CancelTimer decision. |
void |
setCancelWorkflowExecutionDecisionAttributes(CancelWorkflowExecutionDecisionAttributes cancelWorkflowExecutionDecisionAttributes)
Provides details of the
CancelWorkflowExecution decision. |
void |
setCompleteWorkflowExecutionDecisionAttributes(CompleteWorkflowExecutionDecisionAttributes completeWorkflowExecutionDecisionAttributes)
Provides details of the
CompleteWorkflowExecution decision. |
void |
setContinueAsNewWorkflowExecutionDecisionAttributes(ContinueAsNewWorkflowExecutionDecisionAttributes continueAsNewWorkflowExecutionDecisionAttributes)
Provides details of the
ContinueAsNewWorkflowExecution
decision. |
void |
setDecisionType(DecisionType decisionType)
Specifies the type of the decision.
|
void |
setDecisionType(String decisionType)
Specifies the type of the decision.
|
void |
setFailWorkflowExecutionDecisionAttributes(FailWorkflowExecutionDecisionAttributes failWorkflowExecutionDecisionAttributes)
Provides details of the
FailWorkflowExecution decision. |
void |
setRecordMarkerDecisionAttributes(RecordMarkerDecisionAttributes recordMarkerDecisionAttributes)
Provides details of the
RecordMarker decision. |
void |
setRequestCancelActivityTaskDecisionAttributes(RequestCancelActivityTaskDecisionAttributes requestCancelActivityTaskDecisionAttributes)
Provides details of the
RequestCancelActivityTask decision. |
void |
setRequestCancelExternalWorkflowExecutionDecisionAttributes(RequestCancelExternalWorkflowExecutionDecisionAttributes requestCancelExternalWorkflowExecutionDecisionAttributes)
Provides details of the
RequestCancelExternalWorkflowExecution decision. |
void |
setScheduleActivityTaskDecisionAttributes(ScheduleActivityTaskDecisionAttributes scheduleActivityTaskDecisionAttributes)
Provides details of the
ScheduleActivityTask decision. |
void |
setScheduleLambdaFunctionDecisionAttributes(ScheduleLambdaFunctionDecisionAttributes scheduleLambdaFunctionDecisionAttributes) |
void |
setSignalExternalWorkflowExecutionDecisionAttributes(SignalExternalWorkflowExecutionDecisionAttributes signalExternalWorkflowExecutionDecisionAttributes)
Provides details of the
SignalExternalWorkflowExecution
decision. |
void |
setStartChildWorkflowExecutionDecisionAttributes(StartChildWorkflowExecutionDecisionAttributes startChildWorkflowExecutionDecisionAttributes)
Provides details of the
StartChildWorkflowExecution
decision. |
void |
setStartTimerDecisionAttributes(StartTimerDecisionAttributes startTimerDecisionAttributes)
Provides details of the
StartTimer decision. |
String |
toString()
Returns a string representation of this object; useful for testing and
debugging.
|
Decision |
withCancelTimerDecisionAttributes(CancelTimerDecisionAttributes cancelTimerDecisionAttributes)
Provides details of the
CancelTimer decision. |
Decision |
withCancelWorkflowExecutionDecisionAttributes(CancelWorkflowExecutionDecisionAttributes cancelWorkflowExecutionDecisionAttributes)
Provides details of the
CancelWorkflowExecution decision. |
Decision |
withCompleteWorkflowExecutionDecisionAttributes(CompleteWorkflowExecutionDecisionAttributes completeWorkflowExecutionDecisionAttributes)
Provides details of the
CompleteWorkflowExecution decision. |
Decision |
withContinueAsNewWorkflowExecutionDecisionAttributes(ContinueAsNewWorkflowExecutionDecisionAttributes continueAsNewWorkflowExecutionDecisionAttributes)
Provides details of the
ContinueAsNewWorkflowExecution
decision. |
Decision |
withDecisionType(DecisionType decisionType)
Specifies the type of the decision.
|
Decision |
withDecisionType(String decisionType)
Specifies the type of the decision.
|
Decision |
withFailWorkflowExecutionDecisionAttributes(FailWorkflowExecutionDecisionAttributes failWorkflowExecutionDecisionAttributes)
Provides details of the
FailWorkflowExecution decision. |
Decision |
withRecordMarkerDecisionAttributes(RecordMarkerDecisionAttributes recordMarkerDecisionAttributes)
Provides details of the
RecordMarker decision. |
Decision |
withRequestCancelActivityTaskDecisionAttributes(RequestCancelActivityTaskDecisionAttributes requestCancelActivityTaskDecisionAttributes)
Provides details of the
RequestCancelActivityTask decision. |
Decision |
withRequestCancelExternalWorkflowExecutionDecisionAttributes(RequestCancelExternalWorkflowExecutionDecisionAttributes requestCancelExternalWorkflowExecutionDecisionAttributes)
Provides details of the
RequestCancelExternalWorkflowExecution decision. |
Decision |
withScheduleActivityTaskDecisionAttributes(ScheduleActivityTaskDecisionAttributes scheduleActivityTaskDecisionAttributes)
Provides details of the
ScheduleActivityTask decision. |
Decision |
withScheduleLambdaFunctionDecisionAttributes(ScheduleLambdaFunctionDecisionAttributes scheduleLambdaFunctionDecisionAttributes) |
Decision |
withSignalExternalWorkflowExecutionDecisionAttributes(SignalExternalWorkflowExecutionDecisionAttributes signalExternalWorkflowExecutionDecisionAttributes)
Provides details of the
SignalExternalWorkflowExecution
decision. |
Decision |
withStartChildWorkflowExecutionDecisionAttributes(StartChildWorkflowExecutionDecisionAttributes startChildWorkflowExecutionDecisionAttributes)
Provides details of the
StartChildWorkflowExecution
decision. |
Decision |
withStartTimerDecisionAttributes(StartTimerDecisionAttributes startTimerDecisionAttributes)
Provides details of the
StartTimer decision. |
public void setDecisionType(String decisionType)
Specifies the type of the decision.
decisionType
- Specifies the type of the decision.DecisionType
public String getDecisionType()
Specifies the type of the decision.
DecisionType
public Decision withDecisionType(String decisionType)
Specifies the type of the decision.
decisionType
- Specifies the type of the decision.DecisionType
public void setDecisionType(DecisionType decisionType)
Specifies the type of the decision.
decisionType
- Specifies the type of the decision.DecisionType
public Decision withDecisionType(DecisionType decisionType)
Specifies the type of the decision.
decisionType
- Specifies the type of the decision.DecisionType
public void setScheduleActivityTaskDecisionAttributes(ScheduleActivityTaskDecisionAttributes scheduleActivityTaskDecisionAttributes)
Provides details of the ScheduleActivityTask
decision. It is
not set for other decision types.
scheduleActivityTaskDecisionAttributes
- Provides details of the ScheduleActivityTask
decision. It is not set for other decision types.public ScheduleActivityTaskDecisionAttributes getScheduleActivityTaskDecisionAttributes()
Provides details of the ScheduleActivityTask
decision. It is
not set for other decision types.
ScheduleActivityTask
decision. It is not set for other decision types.public Decision withScheduleActivityTaskDecisionAttributes(ScheduleActivityTaskDecisionAttributes scheduleActivityTaskDecisionAttributes)
Provides details of the ScheduleActivityTask
decision. It is
not set for other decision types.
scheduleActivityTaskDecisionAttributes
- Provides details of the ScheduleActivityTask
decision. It is not set for other decision types.public void setRequestCancelActivityTaskDecisionAttributes(RequestCancelActivityTaskDecisionAttributes requestCancelActivityTaskDecisionAttributes)
Provides details of the RequestCancelActivityTask
decision.
It is not set for other decision types.
requestCancelActivityTaskDecisionAttributes
- Provides details of the RequestCancelActivityTask
decision. It is not set for other decision types.public RequestCancelActivityTaskDecisionAttributes getRequestCancelActivityTaskDecisionAttributes()
Provides details of the RequestCancelActivityTask
decision.
It is not set for other decision types.
RequestCancelActivityTask
decision. It is not set for other decision types.public Decision withRequestCancelActivityTaskDecisionAttributes(RequestCancelActivityTaskDecisionAttributes requestCancelActivityTaskDecisionAttributes)
Provides details of the RequestCancelActivityTask
decision.
It is not set for other decision types.
requestCancelActivityTaskDecisionAttributes
- Provides details of the RequestCancelActivityTask
decision. It is not set for other decision types.public void setCompleteWorkflowExecutionDecisionAttributes(CompleteWorkflowExecutionDecisionAttributes completeWorkflowExecutionDecisionAttributes)
Provides details of the CompleteWorkflowExecution
decision.
It is not set for other decision types.
completeWorkflowExecutionDecisionAttributes
- Provides details of the CompleteWorkflowExecution
decision. It is not set for other decision types.public CompleteWorkflowExecutionDecisionAttributes getCompleteWorkflowExecutionDecisionAttributes()
Provides details of the CompleteWorkflowExecution
decision.
It is not set for other decision types.
CompleteWorkflowExecution
decision. It is not set for other decision types.public Decision withCompleteWorkflowExecutionDecisionAttributes(CompleteWorkflowExecutionDecisionAttributes completeWorkflowExecutionDecisionAttributes)
Provides details of the CompleteWorkflowExecution
decision.
It is not set for other decision types.
completeWorkflowExecutionDecisionAttributes
- Provides details of the CompleteWorkflowExecution
decision. It is not set for other decision types.public void setFailWorkflowExecutionDecisionAttributes(FailWorkflowExecutionDecisionAttributes failWorkflowExecutionDecisionAttributes)
Provides details of the FailWorkflowExecution
decision. It
is not set for other decision types.
failWorkflowExecutionDecisionAttributes
- Provides details of the FailWorkflowExecution
decision. It is not set for other decision types.public FailWorkflowExecutionDecisionAttributes getFailWorkflowExecutionDecisionAttributes()
Provides details of the FailWorkflowExecution
decision. It
is not set for other decision types.
FailWorkflowExecution
decision. It is not set for other decision types.public Decision withFailWorkflowExecutionDecisionAttributes(FailWorkflowExecutionDecisionAttributes failWorkflowExecutionDecisionAttributes)
Provides details of the FailWorkflowExecution
decision. It
is not set for other decision types.
failWorkflowExecutionDecisionAttributes
- Provides details of the FailWorkflowExecution
decision. It is not set for other decision types.public void setCancelWorkflowExecutionDecisionAttributes(CancelWorkflowExecutionDecisionAttributes cancelWorkflowExecutionDecisionAttributes)
Provides details of the CancelWorkflowExecution
decision. It
is not set for other decision types.
cancelWorkflowExecutionDecisionAttributes
- Provides details of the CancelWorkflowExecution
decision. It is not set for other decision types.public CancelWorkflowExecutionDecisionAttributes getCancelWorkflowExecutionDecisionAttributes()
Provides details of the CancelWorkflowExecution
decision. It
is not set for other decision types.
CancelWorkflowExecution
decision. It is not set for other decision types.public Decision withCancelWorkflowExecutionDecisionAttributes(CancelWorkflowExecutionDecisionAttributes cancelWorkflowExecutionDecisionAttributes)
Provides details of the CancelWorkflowExecution
decision. It
is not set for other decision types.
cancelWorkflowExecutionDecisionAttributes
- Provides details of the CancelWorkflowExecution
decision. It is not set for other decision types.public void setContinueAsNewWorkflowExecutionDecisionAttributes(ContinueAsNewWorkflowExecutionDecisionAttributes continueAsNewWorkflowExecutionDecisionAttributes)
Provides details of the ContinueAsNewWorkflowExecution
decision. It is not set for other decision types.
continueAsNewWorkflowExecutionDecisionAttributes
- Provides details of the
ContinueAsNewWorkflowExecution
decision. It is not
set for other decision types.public ContinueAsNewWorkflowExecutionDecisionAttributes getContinueAsNewWorkflowExecutionDecisionAttributes()
Provides details of the ContinueAsNewWorkflowExecution
decision. It is not set for other decision types.
ContinueAsNewWorkflowExecution
decision. It is not
set for other decision types.public Decision withContinueAsNewWorkflowExecutionDecisionAttributes(ContinueAsNewWorkflowExecutionDecisionAttributes continueAsNewWorkflowExecutionDecisionAttributes)
Provides details of the ContinueAsNewWorkflowExecution
decision. It is not set for other decision types.
continueAsNewWorkflowExecutionDecisionAttributes
- Provides details of the
ContinueAsNewWorkflowExecution
decision. It is not
set for other decision types.public void setRecordMarkerDecisionAttributes(RecordMarkerDecisionAttributes recordMarkerDecisionAttributes)
Provides details of the RecordMarker
decision. It is not set
for other decision types.
recordMarkerDecisionAttributes
- Provides details of the RecordMarker
decision. It is
not set for other decision types.public RecordMarkerDecisionAttributes getRecordMarkerDecisionAttributes()
Provides details of the RecordMarker
decision. It is not set
for other decision types.
RecordMarker
decision. It is
not set for other decision types.public Decision withRecordMarkerDecisionAttributes(RecordMarkerDecisionAttributes recordMarkerDecisionAttributes)
Provides details of the RecordMarker
decision. It is not set
for other decision types.
recordMarkerDecisionAttributes
- Provides details of the RecordMarker
decision. It is
not set for other decision types.public void setStartTimerDecisionAttributes(StartTimerDecisionAttributes startTimerDecisionAttributes)
Provides details of the StartTimer
decision. It is not set
for other decision types.
startTimerDecisionAttributes
- Provides details of the StartTimer
decision. It is
not set for other decision types.public StartTimerDecisionAttributes getStartTimerDecisionAttributes()
Provides details of the StartTimer
decision. It is not set
for other decision types.
StartTimer
decision. It is
not set for other decision types.public Decision withStartTimerDecisionAttributes(StartTimerDecisionAttributes startTimerDecisionAttributes)
Provides details of the StartTimer
decision. It is not set
for other decision types.
startTimerDecisionAttributes
- Provides details of the StartTimer
decision. It is
not set for other decision types.public void setCancelTimerDecisionAttributes(CancelTimerDecisionAttributes cancelTimerDecisionAttributes)
Provides details of the CancelTimer
decision. It is not set
for other decision types.
cancelTimerDecisionAttributes
- Provides details of the CancelTimer
decision. It is
not set for other decision types.public CancelTimerDecisionAttributes getCancelTimerDecisionAttributes()
Provides details of the CancelTimer
decision. It is not set
for other decision types.
CancelTimer
decision. It is
not set for other decision types.public Decision withCancelTimerDecisionAttributes(CancelTimerDecisionAttributes cancelTimerDecisionAttributes)
Provides details of the CancelTimer
decision. It is not set
for other decision types.
cancelTimerDecisionAttributes
- Provides details of the CancelTimer
decision. It is
not set for other decision types.public void setSignalExternalWorkflowExecutionDecisionAttributes(SignalExternalWorkflowExecutionDecisionAttributes signalExternalWorkflowExecutionDecisionAttributes)
Provides details of the SignalExternalWorkflowExecution
decision. It is not set for other decision types.
signalExternalWorkflowExecutionDecisionAttributes
- Provides details of the
SignalExternalWorkflowExecution
decision. It is not
set for other decision types.public SignalExternalWorkflowExecutionDecisionAttributes getSignalExternalWorkflowExecutionDecisionAttributes()
Provides details of the SignalExternalWorkflowExecution
decision. It is not set for other decision types.
SignalExternalWorkflowExecution
decision. It is not
set for other decision types.public Decision withSignalExternalWorkflowExecutionDecisionAttributes(SignalExternalWorkflowExecutionDecisionAttributes signalExternalWorkflowExecutionDecisionAttributes)
Provides details of the SignalExternalWorkflowExecution
decision. It is not set for other decision types.
signalExternalWorkflowExecutionDecisionAttributes
- Provides details of the
SignalExternalWorkflowExecution
decision. It is not
set for other decision types.public void setRequestCancelExternalWorkflowExecutionDecisionAttributes(RequestCancelExternalWorkflowExecutionDecisionAttributes requestCancelExternalWorkflowExecutionDecisionAttributes)
Provides details of the
RequestCancelExternalWorkflowExecution
decision. It is not
set for other decision types.
requestCancelExternalWorkflowExecutionDecisionAttributes
- Provides details of the
RequestCancelExternalWorkflowExecution
decision. It
is not set for other decision types.public RequestCancelExternalWorkflowExecutionDecisionAttributes getRequestCancelExternalWorkflowExecutionDecisionAttributes()
Provides details of the
RequestCancelExternalWorkflowExecution
decision. It is not
set for other decision types.
RequestCancelExternalWorkflowExecution
decision. It
is not set for other decision types.public Decision withRequestCancelExternalWorkflowExecutionDecisionAttributes(RequestCancelExternalWorkflowExecutionDecisionAttributes requestCancelExternalWorkflowExecutionDecisionAttributes)
Provides details of the
RequestCancelExternalWorkflowExecution
decision. It is not
set for other decision types.
requestCancelExternalWorkflowExecutionDecisionAttributes
- Provides details of the
RequestCancelExternalWorkflowExecution
decision. It
is not set for other decision types.public void setStartChildWorkflowExecutionDecisionAttributes(StartChildWorkflowExecutionDecisionAttributes startChildWorkflowExecutionDecisionAttributes)
Provides details of the StartChildWorkflowExecution
decision. It is not set for other decision types.
startChildWorkflowExecutionDecisionAttributes
- Provides details of the StartChildWorkflowExecution
decision. It is not set for other decision types.public StartChildWorkflowExecutionDecisionAttributes getStartChildWorkflowExecutionDecisionAttributes()
Provides details of the StartChildWorkflowExecution
decision. It is not set for other decision types.
StartChildWorkflowExecution
decision. It is not set for other decision types.public Decision withStartChildWorkflowExecutionDecisionAttributes(StartChildWorkflowExecutionDecisionAttributes startChildWorkflowExecutionDecisionAttributes)
Provides details of the StartChildWorkflowExecution
decision. It is not set for other decision types.
startChildWorkflowExecutionDecisionAttributes
- Provides details of the StartChildWorkflowExecution
decision. It is not set for other decision types.public void setScheduleLambdaFunctionDecisionAttributes(ScheduleLambdaFunctionDecisionAttributes scheduleLambdaFunctionDecisionAttributes)
scheduleLambdaFunctionDecisionAttributes
- public ScheduleLambdaFunctionDecisionAttributes getScheduleLambdaFunctionDecisionAttributes()
public Decision withScheduleLambdaFunctionDecisionAttributes(ScheduleLambdaFunctionDecisionAttributes scheduleLambdaFunctionDecisionAttributes)
scheduleLambdaFunctionDecisionAttributes
- public String toString()
toString
in class Object
Object.toString()
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