com.amazonaws.services.simpleworkflow.flow.common
Class WorkflowExecutionUtils

java.lang.Object
  com.amazonaws.services.simpleworkflow.flow.common.WorkflowExecutionUtils

public class WorkflowExecutionUtils
extends Object

Convenience methods to be used by unit tests and during development.

Constructor Summary

WorkflowExecutionUtils()

Method Summary

static WorkflowExecutionInfo	describeWorkflowInstance(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution)
static String	getFailureCause(HistoryEvent historyEvent)
static List<HistoryEvent>	getHistory(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution)
static History	getHistoryPage(String nextPageToken, AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution)
static String	getId(HistoryEvent historyEvent)
static HistoryEvent	getInstanceCloseEvent(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution)
static WorkflowExecutionCompletedEventAttributes	getWorkflowExecutionResult(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution) Returns result of workflow instance execution.
static WorkflowExecution	getWorkflowIdFromExternalWorkflowCompletedEvent(HistoryEvent event)
static boolean	isActivityTaskClosedEvent(HistoryEvent event)
static boolean	isExternalWorkflowClosedEvent(HistoryEvent event)
static boolean	isWorkflowExecutionCompletedEvent(HistoryEvent event)
static String	prettyPrintDecision(Decision decision) Returns single decision in a human readable format
static String	prettyPrintDecisions(Iterable<Decision> decisions)
static String	prettyPrintHistory(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution) Returns workflow instance history in a human readable format.
static String	prettyPrintHistory(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution, boolean showWorkflowTasks) Returns workflow instance history in a human readable format.
static String	prettyPrintHistory(History history, boolean showWorkflowTasks) Returns workflow instance history in a human readable format.
static String	prettyPrintHistory(Iterable<HistoryEvent> events, boolean showWorkflowTasks)
static String	prettyPrintHistoryEvent(HistoryEvent event) Returns single event in a human readable format
static String	printDetails(String details)
static String	truncateDetails(String details)
static String	truncateReason(String reason) Simple Workflow limits length of the reason field.
static WorkflowExecutionCompletedEventAttributes	waitForWorkflowExecutionResult(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution) Blocks until workflow instance completes and returns its result.
static WorkflowExecutionCompletedEventAttributes	waitForWorkflowExecutionResult(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution, long timeoutSeconds) Waits up to specified timeout until workflow instance completes and returns its result.
static String	waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution) Blocks until workflow instance completes.
static String	waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution, long timeoutSeconds) Waits up to specified timeout for workflow instance completion.
static String	waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution) Like waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow, String, WorkflowExecution, long) , but with no timeout.
static String	waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow service, String domain, WorkflowExecution workflowExecution, long timeoutSeconds) Like waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow, String, WorkflowExecution, long) , except will wait for continued generations of the original workflow execution too.

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkflowExecutionUtils

public WorkflowExecutionUtils()

Method Detail

waitForWorkflowExecutionResult

public static WorkflowExecutionCompletedEventAttributes waitForWorkflowExecutionResult(AmazonSimpleWorkflow service,
                                                                                       String domain,
                                                                                       WorkflowExecution workflowExecution)
                                                                                throws InterruptedException

Blocks until workflow instance completes and returns its result. Useful for unit tests and during development. Never use in production setting as polling for worklow instance status is an expensive operation.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

Returns:

workflow instance result.

Throws:

InterruptedException - if thread is interrupted

RuntimeException - if workflow instance ended up in any state but completed

waitForWorkflowExecutionResult

public static WorkflowExecutionCompletedEventAttributes waitForWorkflowExecutionResult(AmazonSimpleWorkflow service,
                                                                                       String domain,
                                                                                       WorkflowExecution workflowExecution,
                                                                                       long timeoutSeconds)
                                                                                throws InterruptedException,
                                                                                       TimeoutException

Waits up to specified timeout until workflow instance completes and returns its result. Useful for unit tests and during development. Never use in production setting as polling for worklow instance status is an expensive operation.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

Returns:

workflow instance result.

Throws:

InterruptedException - if thread is interrupted

TimeoutException - if instance is not complete after specified timeout

RuntimeException - if workflow instance ended up in any state but completed

getWorkflowExecutionResult

public static WorkflowExecutionCompletedEventAttributes getWorkflowExecutionResult(AmazonSimpleWorkflow service,
                                                                                   String domain,
                                                                                   WorkflowExecution workflowExecution)

Returns result of workflow instance execution. result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

Throws:

IllegalStateException - if workflow is still running

RuntimeException - if workflow instance ended up in any state but completed

getInstanceCloseEvent

public static HistoryEvent getInstanceCloseEvent(AmazonSimpleWorkflow service,
                                                 String domain,
                                                 WorkflowExecution workflowExecution)

isWorkflowExecutionCompletedEvent

public static boolean isWorkflowExecutionCompletedEvent(HistoryEvent event)

isActivityTaskClosedEvent

public static boolean isActivityTaskClosedEvent(HistoryEvent event)

isExternalWorkflowClosedEvent

public static boolean isExternalWorkflowClosedEvent(HistoryEvent event)

getWorkflowIdFromExternalWorkflowCompletedEvent

public static WorkflowExecution getWorkflowIdFromExternalWorkflowCompletedEvent(HistoryEvent event)

getId

public static String getId(HistoryEvent historyEvent)

getFailureCause

public static String getFailureCause(HistoryEvent historyEvent)

waitForWorkflowInstanceCompletion

public static String waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow service,
                                                       String domain,
                                                       WorkflowExecution workflowExecution)
                                                throws InterruptedException

Blocks until workflow instance completes. Never use in production setting as polling for worklow instance status is an expensive operation.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

Returns:

instance close status

Throws:

InterruptedException

waitForWorkflowInstanceCompletion

public static String waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow service,
                                                       String domain,
                                                       WorkflowExecution workflowExecution,
                                                       long timeoutSeconds)
                                                throws InterruptedException,
                                                       TimeoutException

Waits up to specified timeout for workflow instance completion. Never use in production setting as polling for worklow instance status is an expensive operation.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

timeoutSeconds - maximum time to wait for completion. 0 means wait forever.

Returns:

instance close status

Throws:

TimeoutException

InterruptedException

waitForWorkflowInstanceCompletionAcrossGenerations

public static String waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow service,
                                                                        String domain,
                                                                        WorkflowExecution workflowExecution,
                                                                        long timeoutSeconds)
                                                                 throws InterruptedException,
                                                                        TimeoutException

Like waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow, String, WorkflowExecution, long) , except will wait for continued generations of the original workflow execution too.

Parameters:

service -

domain -

workflowExecution -

timeoutSeconds -

Returns:

Throws:

InterruptedException

TimeoutException

See Also:

waitForWorkflowInstanceCompletion(AmazonSimpleWorkflow, String, WorkflowExecution, long)

waitForWorkflowInstanceCompletionAcrossGenerations

public static String waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow service,
                                                                        String domain,
                                                                        WorkflowExecution workflowExecution)
                                                                 throws InterruptedException

Like waitForWorkflowInstanceCompletionAcrossGenerations(AmazonSimpleWorkflow, String, WorkflowExecution, long) , but with no timeout.

Parameters:

service -

domain -

workflowExecution -

Returns:

Throws:

InterruptedException

describeWorkflowInstance

public static WorkflowExecutionInfo describeWorkflowInstance(AmazonSimpleWorkflow service,
                                                             String domain,
                                                             WorkflowExecution workflowExecution)

prettyPrintHistory

public static String prettyPrintHistory(AmazonSimpleWorkflow service,
                                        String domain,
                                        WorkflowExecution workflowExecution)

Returns workflow instance history in a human readable format.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

prettyPrintHistory

public static String prettyPrintHistory(AmazonSimpleWorkflow service,
                                        String domain,
                                        WorkflowExecution workflowExecution,
                                        boolean showWorkflowTasks)

Returns workflow instance history in a human readable format.

Parameters:

workflowExecution - result of AmazonSimpleWorkflow#startWorkflowInstance(com.amazonaws.services.simpleworkflow.model.StartWorkflowInstanceRequest)

showWorkflowTasks - when set to false workflow task events (decider events) are not included

getHistory

public static List<HistoryEvent> getHistory(AmazonSimpleWorkflow service,
                                            String domain,
                                            WorkflowExecution workflowExecution)

getHistoryPage

public static History getHistoryPage(String nextPageToken,
                                     AmazonSimpleWorkflow service,
                                     String domain,
                                     WorkflowExecution workflowExecution)

prettyPrintHistory

public static String prettyPrintHistory(History history,
                                        boolean showWorkflowTasks)

Returns workflow instance history in a human readable format.

Parameters:

showWorkflowTasks - when set to false workflow task events (decider events) are not included

prettyPrintHistory

public static String prettyPrintHistory(Iterable<HistoryEvent> events,
                                        boolean showWorkflowTasks)

prettyPrintDecisions

public static String prettyPrintDecisions(Iterable<Decision> decisions)

prettyPrintHistoryEvent

public static String prettyPrintHistoryEvent(HistoryEvent event)

Returns single event in a human readable format

Parameters:

event - event to pretty print

prettyPrintDecision

public static String prettyPrintDecision(Decision decision)

Returns single decision in a human readable format

Parameters:

event - event to pretty print

printDetails

public static String printDetails(String details)

truncateReason

public static String truncateReason(String reason)

Simple Workflow limits length of the reason field. This method truncates the passed argument to the maximum length.

Parameters:

reason - string value to truncate

Returns:

truncated value

truncateDetails

public static String truncateDetails(String details)