@ThreadSafe @Generated(value="com.amazonaws:aws-java-sdk-code-generator") public class AWSStepFunctionsClient extends AmazonWebServiceClient implements AWSStepFunctions
Step Functions is a service that lets you coordinate the components of distributed applications and microservices using visual workflows.
You can use Step Functions to build applications from individual components, each of which performs a discrete function, or task, allowing you to scale and change applications quickly. Step Functions provides a console that helps visualize the components of your application as a series of steps. Step Functions automatically triggers and tracks each step, and retries steps when there are errors, so your application executes predictably and in the right order every time. Step Functions logs the state of each step, so you can quickly diagnose and debug any issues.
Step Functions manages operations and underlying infrastructure to ensure your application is available at any scale. You can run tasks on Amazon Web Services, your own servers, or any system that has access to Amazon Web Services. You can access and use Step Functions using the console, the Amazon Web Services SDKs, or an HTTP API. For more information about Step Functions, see the Step Functions Developer Guide .
Modifier and Type | Field and Description |
---|---|
protected static AWSStepFunctionsClientConfigurationFactory |
configFactory
Client configuration factory providing ClientConfigurations tailored to this client
|
client, clientConfiguration, endpoint, isEndpointOverridden, LOGGING_AWS_REQUEST_METRIC, requestHandler2s, timeOffset
ENDPOINT_PREFIX
Constructor and Description |
---|
AWSStepFunctionsClient()
Deprecated.
|
AWSStepFunctionsClient(AWSCredentials awsCredentials)
Deprecated.
use
AwsClientBuilder.withCredentials(AWSCredentialsProvider) for example:
AWSStepFunctionsClientBuilder.standard().withCredentials(new AWSStaticCredentialsProvider(awsCredentials)).build(); |
AWSStepFunctionsClient(AWSCredentials awsCredentials,
ClientConfiguration clientConfiguration)
|
AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider)
Deprecated.
|
AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration)
|
AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration,
RequestMetricCollector requestMetricCollector)
|
AWSStepFunctionsClient(ClientConfiguration clientConfiguration)
Deprecated.
|
Modifier and Type | Method and Description |
---|---|
static AWSStepFunctionsClientBuilder |
builder() |
CreateActivityResult |
createActivity(CreateActivityRequest request)
Creates an activity.
|
CreateStateMachineResult |
createStateMachine(CreateStateMachineRequest request)
Creates a state machine.
|
CreateStateMachineAliasResult |
createStateMachineAlias(CreateStateMachineAliasRequest request)
|
DeleteActivityResult |
deleteActivity(DeleteActivityRequest request)
Deletes an activity.
|
DeleteStateMachineResult |
deleteStateMachine(DeleteStateMachineRequest request)
Deletes a state machine.
|
DeleteStateMachineAliasResult |
deleteStateMachineAlias(DeleteStateMachineAliasRequest request)
Deletes a state machine alias.
|
DeleteStateMachineVersionResult |
deleteStateMachineVersion(DeleteStateMachineVersionRequest request)
Deletes a state machine version.
|
DescribeActivityResult |
describeActivity(DescribeActivityRequest request)
Describes an activity.
|
DescribeExecutionResult |
describeExecution(DescribeExecutionRequest request)
Provides information about a state machine execution, such as the state machine associated with the execution,
the execution input and output, and relevant execution metadata.
|
DescribeMapRunResult |
describeMapRun(DescribeMapRunRequest request)
Provides information about a Map Run's configuration, progress, and results.
|
DescribeStateMachineResult |
describeStateMachine(DescribeStateMachineRequest request)
Provides information about a state machine's definition, its IAM role Amazon Resource Name (ARN), and
configuration.
|
DescribeStateMachineAliasResult |
describeStateMachineAlias(DescribeStateMachineAliasRequest request)
Returns details about a state machine alias.
|
DescribeStateMachineForExecutionResult |
describeStateMachineForExecution(DescribeStateMachineForExecutionRequest request)
Provides information about a state machine's definition, its execution role ARN, and configuration.
|
GetActivityTaskResult |
getActivityTask(GetActivityTaskRequest request)
Used by workers to retrieve a task (with the specified activity ARN) which has been scheduled for execution by a
running state machine.
|
ResponseMetadata |
getCachedResponseMetadata(AmazonWebServiceRequest request)
Returns additional metadata for a previously executed successful, request, typically used for debugging issues
where a service isn't acting as expected.
|
GetExecutionHistoryResult |
getExecutionHistory(GetExecutionHistoryRequest request)
Returns the history of the specified execution as a list of events.
|
ListActivitiesResult |
listActivities(ListActivitiesRequest request)
Lists the existing activities.
|
ListExecutionsResult |
listExecutions(ListExecutionsRequest request)
Lists all executions of a state machine or a Map Run.
|
ListMapRunsResult |
listMapRuns(ListMapRunsRequest request)
Lists all Map Runs that were started by a given state machine execution.
|
ListStateMachineAliasesResult |
listStateMachineAliases(ListStateMachineAliasesRequest request)
Lists aliases for a
specified state machine ARN.
|
ListStateMachinesResult |
listStateMachines(ListStateMachinesRequest request)
Lists the existing state machines.
|
ListStateMachineVersionsResult |
listStateMachineVersions(ListStateMachineVersionsRequest request)
Lists versions for
the specified state machine Amazon Resource Name (ARN).
|
ListTagsForResourceResult |
listTagsForResource(ListTagsForResourceRequest request)
List tags for a given resource.
|
PublishStateMachineVersionResult |
publishStateMachineVersion(PublishStateMachineVersionRequest request)
Creates a version from
the current revision of a state machine.
|
SendTaskFailureResult |
sendTaskFailure(SendTaskFailureRequest request)
Used by activity workers and task states using the callback pattern to report that the task identified by the
taskToken failed. |
SendTaskHeartbeatResult |
sendTaskHeartbeat(SendTaskHeartbeatRequest request)
Used by activity workers and task states using the callback pattern to report to Step Functions that the task represented by the specified
taskToken is still making progress. |
SendTaskSuccessResult |
sendTaskSuccess(SendTaskSuccessRequest request)
Used by activity workers and task states using the callback pattern to report that the task identified by the
taskToken completed successfully. |
void |
shutdown()
Shuts down this client object, releasing any resources that might be held open.
|
StartExecutionResult |
startExecution(StartExecutionRequest request)
Starts a state machine execution.
|
StartSyncExecutionResult |
startSyncExecution(StartSyncExecutionRequest request)
Starts a Synchronous Express state machine execution.
|
StopExecutionResult |
stopExecution(StopExecutionRequest request)
Stops an execution.
|
TagResourceResult |
tagResource(TagResourceRequest request)
Add a tag to a Step Functions resource.
|
UntagResourceResult |
untagResource(UntagResourceRequest request)
Remove a tag from a Step Functions resource
|
UpdateMapRunResult |
updateMapRun(UpdateMapRunRequest request)
Updates an in-progress Map Run's configuration to include changes to the settings that control maximum
concurrency and Map Run failure.
|
UpdateStateMachineResult |
updateStateMachine(UpdateStateMachineRequest request)
Updates an existing state machine by modifying its
definition , roleArn , or
loggingConfiguration . |
UpdateStateMachineAliasResult |
updateStateMachineAlias(UpdateStateMachineAliasRequest request)
Updates the configuration of an existing state machine alias by
modifying its
description or routingConfiguration . |
addRequestHandler, addRequestHandler, beforeClientExecution, beforeMarshalling, calculateCRC32FromCompressedData, checkMutability, configureRegion, createExecutionContext, createExecutionContext, createExecutionContext, createSignerProvider, endClientExecution, endClientExecution, getClientConfiguration, getClientId, getEndpointPrefix, getMonitoringListeners, getRequestMetricsCollector, getServiceAbbreviation, getServiceName, getServiceNameIntern, getSigner, getSignerByURI, getSignerOverride, getSignerProvider, getSignerRegionOverride, getSigningRegion, getTimeOffset, isCsmEnabled, isEndpointOverridden, isProfilingEnabled, isRequestMetricsEnabled, makeImmutable, removeRequestHandler, removeRequestHandler, requestMetricCollector, setEndpoint, setEndpoint, setEndpointPrefix, setRegion, setServiceNameIntern, setSignerRegionOverride, setTimeOffset, shouldGenerateClientSideMonitoringEvents, useStrictHostNameVerification, withEndpoint, withRegion, withRegion, withTimeOffset
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
setEndpoint, setRegion
protected static final AWSStepFunctionsClientConfigurationFactory configFactory
@Deprecated public AWSStepFunctionsClient()
AWSStepFunctionsClientBuilder.defaultClient()
All service calls made using this new client object are blocking, and will not return until the service call completes.
DefaultAWSCredentialsProviderChain
@Deprecated public AWSStepFunctionsClient(ClientConfiguration clientConfiguration)
AwsClientBuilder.withClientConfiguration(ClientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
clientConfiguration
- The client configuration options controlling how this client connects to AWS SFN (ex: proxy settings,
retry counts, etc.).DefaultAWSCredentialsProviderChain
@Deprecated public AWSStepFunctionsClient(AWSCredentials awsCredentials)
AwsClientBuilder.withCredentials(AWSCredentialsProvider)
for example:
AWSStepFunctionsClientBuilder.standard().withCredentials(new AWSStaticCredentialsProvider(awsCredentials)).build();
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials
- The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.@Deprecated public AWSStepFunctionsClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration)
AwsClientBuilder.withCredentials(AWSCredentialsProvider)
and
AwsClientBuilder.withClientConfiguration(ClientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials
- The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.clientConfiguration
- The client configuration options controlling how this client connects to AWS SFN (ex: proxy settings,
retry counts, etc.).@Deprecated public AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider)
AwsClientBuilder.withCredentials(AWSCredentialsProvider)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider
- The AWS credentials provider which will provide credentials to authenticate requests with AWS services.@Deprecated public AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration)
AwsClientBuilder.withCredentials(AWSCredentialsProvider)
and
AwsClientBuilder.withClientConfiguration(ClientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider
- The AWS credentials provider which will provide credentials to authenticate requests with AWS services.clientConfiguration
- The client configuration options controlling how this client connects to AWS SFN (ex: proxy settings,
retry counts, etc.).@Deprecated public AWSStepFunctionsClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, RequestMetricCollector requestMetricCollector)
AwsClientBuilder.withCredentials(AWSCredentialsProvider)
and
AwsClientBuilder.withClientConfiguration(ClientConfiguration)
and
AwsClientBuilder.withMetricsCollector(RequestMetricCollector)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider
- The AWS credentials provider which will provide credentials to authenticate requests with AWS services.clientConfiguration
- The client configuration options controlling how this client connects to AWS SFN (ex: proxy settings,
retry counts, etc.).requestMetricCollector
- optional request metric collectorpublic static AWSStepFunctionsClientBuilder builder()
public CreateActivityResult createActivity(CreateActivityRequest request)
Creates an activity. An activity is a task that you write in any programming language and host on any machine
that has access to Step Functions. Activities must poll Step Functions using the GetActivityTask
API
action and respond using SendTask*
API actions. This function lets Step Functions know the existence
of your activity and returns an identifier for use in a state machine and when polling from the activity.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
CreateActivity
is an idempotent API. Subsequent requests won’t create a duplicate resource if it was
already created. CreateActivity
's idempotency check is based on the activity name
. If a
following request has different tags
values, Step Functions will ignore these differences and treat
it as an idempotent request of the previous. In this case, tags
will not be updated, even if they
are different.
createActivity
in interface AWSStepFunctions
createActivityRequest
- ActivityLimitExceededException
- The maximum number of activities has been reached. Existing activities must be deleted before a new
activity can be created.InvalidNameException
- The provided name is not valid.TooManyTagsException
- You've exceeded the number of tags allowed for a resource. See the Limits Topic in the Step
Functions Developer Guide.public CreateStateMachineResult createStateMachine(CreateStateMachineRequest request)
Creates a state machine. A state machine consists of a collection of states that can do work (Task
states), determine to which states to transition next (Choice
states), stop an execution with an
error (Fail
states), and so on. State machines are specified using a JSON-based, structured
language. For more information, see Amazon States
Language in the Step Functions User Guide.
If you set the publish
parameter of this API action to true
, it publishes version
1
as the first revision of the state machine.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
CreateStateMachine
is an idempotent API. Subsequent requests won’t create a duplicate resource if it
was already created. CreateStateMachine
's idempotency check is based on the state machine
name
, definition
, type
, LoggingConfiguration
, and
TracingConfiguration
. The check is also based on the publish
and
versionDescription
parameters. If a following request has a different roleArn
or
tags
, Step Functions will ignore these differences and treat it as an idempotent request of the
previous. In this case, roleArn
and tags
will not be updated, even if they are
different.
createStateMachine
in interface AWSStepFunctions
createStateMachineRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidDefinitionException
- The provided Amazon States Language definition is not valid.InvalidNameException
- The provided name is not valid.InvalidLoggingConfigurationException
InvalidTracingConfigurationException
- Your tracingConfiguration
key does not match, or enabled
has not been set to
true
or false
.StateMachineAlreadyExistsException
- A state machine with the same name but a different definition or role ARN already exists.StateMachineDeletingException
- The specified state machine is being deleted.StateMachineLimitExceededException
- The maximum number of state machines has been reached. Existing state machines must be deleted before a
new state machine can be created.StateMachineTypeNotSupportedException
TooManyTagsException
- You've exceeded the number of tags allowed for a resource. See the Limits Topic in the Step
Functions Developer Guide.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
public CreateStateMachineAliasResult createStateMachineAlias(CreateStateMachineAliasRequest request)
Creates an alias for a state machine that points to one or two versions of the same state machine. You can set your application to call StartExecution with an alias and update the version the alias uses without changing the client's code.
You can also map an alias to split StartExecution requests between two versions of a state machine. To do
this, add a second RoutingConfig
object in the routingConfiguration
parameter. You must
also specify the percentage of execution run requests each version should receive in both
RoutingConfig
objects. Step Functions randomly chooses which version runs a given execution based on
the percentage you specify.
To create an alias that points to a single version, specify a single RoutingConfig
object with a
weight
set to 100.
You can create up to 100 aliases for each state machine. You must delete unused aliases using the DeleteStateMachineAlias API action.
CreateStateMachineAlias
is an idempotent API. Step Functions bases the idempotency check on the
stateMachineArn
, description
, name
, and routingConfiguration
parameters. Requests that contain the same values for these parameters return a successful idempotent response
without creating a duplicate resource.
Related operations:
createStateMachineAlias
in interface AWSStepFunctions
createStateMachineAliasRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidNameException
- The provided name is not valid.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.StateMachineDeletingException
- The specified state machine is being deleted.ResourceNotFoundException
- Could not find the referenced resource.ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
ServiceQuotaExceededException
- The request would cause a service quota to be exceeded.
HTTP Status Code: 402
public DeleteActivityResult deleteActivity(DeleteActivityRequest request)
Deletes an activity.
deleteActivity
in interface AWSStepFunctions
deleteActivityRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public DeleteStateMachineResult deleteStateMachine(DeleteStateMachineRequest request)
Deletes a state machine. This is an asynchronous operation: It sets the state machine's status to
DELETING
and begins the deletion process.
A qualified state machine ARN can either refer to a Distributed Map state defined within a state machine, a version ARN, or an alias ARN.
The following are some examples of qualified and unqualified state machine ARNs:
The following qualified state machine ARN refers to a Distributed Map state with a label
mapStateLabel
in a state machine named myStateMachine
.
arn:partition:states:region:account-id:stateMachine:myStateMachine/mapStateLabel
If you provide a qualified state machine ARN that refers to a Distributed Map state, the request fails
with ValidationException
.
The following unqualified state machine ARN refers to a state machine named myStateMachine
.
arn:partition:states:region:account-id:stateMachine:myStateMachine
This API action also deletes all versions and aliases associated with a state machine.
For EXPRESS
state machines, the deletion happens eventually (usually in less than a minute). Running
executions may emit logs after DeleteStateMachine
API is called.
deleteStateMachine
in interface AWSStepFunctions
deleteStateMachineRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.public DeleteStateMachineAliasResult deleteStateMachineAlias(DeleteStateMachineAliasRequest request)
Deletes a state machine alias.
After you delete a state machine alias, you can't use it to start executions. When you delete a state machine alias, Step Functions doesn't delete the state machine versions that alias references.
Related operations:
deleteStateMachineAlias
in interface AWSStepFunctions
deleteStateMachineAliasRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
public DeleteStateMachineVersionResult deleteStateMachineVersion(DeleteStateMachineVersionRequest request)
Deletes a state machine version. After you delete a version, you can't call StartExecution using that version's ARN or use the version with a state machine alias.
Deleting a state machine version won't terminate its in-progress executions.
You can't delete a state machine version currently referenced by one or more aliases. Before you delete a version, you must either delete the aliases or update them to point to another state machine version.
Related operations:
deleteStateMachineVersion
in interface AWSStepFunctions
deleteStateMachineVersionRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
public DescribeActivityResult describeActivity(DescribeActivityRequest request)
Describes an activity.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
describeActivity
in interface AWSStepFunctions
describeActivityRequest
- ActivityDoesNotExistException
- The specified activity does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public DescribeExecutionResult describeExecution(DescribeExecutionRequest request)
Provides information about a state machine execution, such as the state machine associated with the execution, the execution input and output, and relevant execution metadata. Use this API action to return the Map Run Amazon Resource Name (ARN) if the execution was dispatched by a Map Run.
If you specify a version or alias ARN when you call the StartExecution API action,
DescribeExecution
returns that ARN.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
Executions of an EXPRESS
state machinearen't supported by DescribeExecution
unless a
Map Run dispatched them.
describeExecution
in interface AWSStepFunctions
describeExecutionRequest
- ExecutionDoesNotExistException
- The specified execution does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public DescribeMapRunResult describeMapRun(DescribeMapRunRequest request)
Provides information about a Map Run's configuration, progress, and results. For more information, see Examining Map Run in the Step Functions Developer Guide.
describeMapRun
in interface AWSStepFunctions
describeMapRunRequest
- ResourceNotFoundException
- Could not find the referenced resource.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public DescribeStateMachineResult describeStateMachine(DescribeStateMachineRequest request)
Provides information about a state machine's definition, its IAM role Amazon Resource Name (ARN), and configuration.
A qualified state machine ARN can either refer to a Distributed Map state defined within a state machine, a version ARN, or an alias ARN.
The following are some examples of qualified and unqualified state machine ARNs:
The following qualified state machine ARN refers to a Distributed Map state with a label
mapStateLabel
in a state machine named myStateMachine
.
arn:partition:states:region:account-id:stateMachine:myStateMachine/mapStateLabel
If you provide a qualified state machine ARN that refers to a Distributed Map state, the request fails
with ValidationException
.
The following qualified state machine ARN refers to an alias named PROD
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine:PROD>
If you provide a qualified state machine ARN that refers to a version ARN or an alias ARN, the request starts execution for that version or alias.
The following unqualified state machine ARN refers to a state machine named myStateMachine
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine>
This API action returns the details for a state machine version if the stateMachineArn
you specify
is a state machine version ARN.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
describeStateMachine
in interface AWSStepFunctions
describeStateMachineRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.StateMachineDoesNotExistException
- The specified state machine does not exist.public DescribeStateMachineAliasResult describeStateMachineAlias(DescribeStateMachineAliasRequest request)
Returns details about a state machine alias.
Related operations:
describeStateMachineAlias
in interface AWSStepFunctions
describeStateMachineAliasRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.public DescribeStateMachineForExecutionResult describeStateMachineForExecution(DescribeStateMachineForExecutionRequest request)
Provides information about a state machine's definition, its execution role ARN, and configuration. If a Map Run dispatched the execution, this action returns the Map Run Amazon Resource Name (ARN) in the response. The state machine returned is the state machine associated with the Map Run.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
This API action is not supported by EXPRESS
state machines.
describeStateMachineForExecution
in interface AWSStepFunctions
describeStateMachineForExecutionRequest
- ExecutionDoesNotExistException
- The specified execution does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public GetActivityTaskResult getActivityTask(GetActivityTaskRequest request)
Used by workers to retrieve a task (with the specified activity ARN) which has been scheduled for execution by a
running state machine. This initiates a long poll, where the service holds the HTTP connection open and responds
as soon as a task becomes available (i.e. an execution of a task of this type is needed.) The maximum time the
service holds on to the request before responding is 60 seconds. If no task is available within 60 seconds, the
poll returns a taskToken
with a null string.
This API action isn't logged in CloudTrail.
Workers should set their client side socket timeout to at least 65 seconds (5 seconds higher than the maximum time the service may hold the poll request).
Polling with GetActivityTask
can cause latency in some implementations. See Avoid Latency When Polling
for Activity Tasks in the Step Functions Developer Guide.
getActivityTask
in interface AWSStepFunctions
getActivityTaskRequest
- ActivityDoesNotExistException
- The specified activity does not exist.ActivityWorkerLimitExceededException
- The maximum number of workers concurrently polling for activity tasks has been reached.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public GetExecutionHistoryResult getExecutionHistory(GetExecutionHistoryRequest request)
Returns the history of the specified execution as a list of events. By default, the results are returned in
ascending order of the timeStamp
of the events. Use the reverseOrder
parameter to get
the latest events first.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
This API action is not supported by EXPRESS
state machines.
getExecutionHistory
in interface AWSStepFunctions
getExecutionHistoryRequest
- ExecutionDoesNotExistException
- The specified execution does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidTokenException
- The provided token is not valid.public ListActivitiesResult listActivities(ListActivitiesRequest request)
Lists the existing activities.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
listActivities
in interface AWSStepFunctions
listActivitiesRequest
- InvalidTokenException
- The provided token is not valid.public ListExecutionsResult listExecutions(ListExecutionsRequest request)
Lists all executions of a state machine or a Map Run. You can list all executions related to a state machine by specifying a state machine Amazon Resource Name (ARN), or those related to a Map Run by specifying a Map Run ARN.
You can also provide a state machine alias ARN or version ARN to list the executions associated with a specific alias or version.
Results are sorted by time, with the most recent execution first.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
This API action is not supported by EXPRESS
state machines.
listExecutions
in interface AWSStepFunctions
listExecutionsRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidTokenException
- The provided token is not valid.StateMachineDoesNotExistException
- The specified state machine does not exist.StateMachineTypeNotSupportedException
ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.ResourceNotFoundException
- Could not find the referenced resource.public ListMapRunsResult listMapRuns(ListMapRunsRequest request)
Lists all Map Runs that were started by a given state machine execution. Use this API action to obtain Map Run
ARNs, and then call DescribeMapRun
to obtain more information, if needed.
listMapRuns
in interface AWSStepFunctions
listMapRunsRequest
- ExecutionDoesNotExistException
- The specified execution does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidTokenException
- The provided token is not valid.public ListStateMachineAliasesResult listStateMachineAliases(ListStateMachineAliasesRequest request)
Lists aliases for a specified state machine ARN. Results are sorted by time, with the most recently created aliases listed first.
To list aliases that reference a state machine version, you
can specify the version ARN in the stateMachineArn
parameter.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
Related operations:
listStateMachineAliases
in interface AWSStepFunctions
listStateMachineAliasesRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidTokenException
- The provided token is not valid.ResourceNotFoundException
- Could not find the referenced resource.StateMachineDoesNotExistException
- The specified state machine does not exist.StateMachineDeletingException
- The specified state machine is being deleted.public ListStateMachineVersionsResult listStateMachineVersions(ListStateMachineVersionsRequest request)
Lists versions for the specified state machine Amazon Resource Name (ARN).
The results are sorted in descending order of the version creation time.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
Related operations:
listStateMachineVersions
in interface AWSStepFunctions
listStateMachineVersionsRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidTokenException
- The provided token is not valid.public ListStateMachinesResult listStateMachines(ListStateMachinesRequest request)
Lists the existing state machines.
If nextToken
is returned, there are more results available. The value of nextToken
is a
unique pagination token for each page. Make the call again using the returned token to retrieve the next page.
Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination
token will return an HTTP 400 InvalidToken error.
This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.
listStateMachines
in interface AWSStepFunctions
listStateMachinesRequest
- InvalidTokenException
- The provided token is not valid.public ListTagsForResourceResult listTagsForResource(ListTagsForResourceRequest request)
List tags for a given resource.
Tags may only contain Unicode letters, digits, white space, or these symbols: _ . : / = + - @
.
listTagsForResource
in interface AWSStepFunctions
listTagsForResourceRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.public PublishStateMachineVersionResult publishStateMachineVersion(PublishStateMachineVersionRequest request)
Creates a version from the current revision of a state machine. Use versions to create immutable snapshots of your state machine. You can start executions from versions either directly or with an alias. To create an alias, use CreateStateMachineAlias.
You can publish up to 1000 versions for each state machine. You must manually delete unused versions using the DeleteStateMachineVersion API action.
PublishStateMachineVersion
is an idempotent API. It doesn't create a duplicate state machine version
if it already exists for the current revision. Step Functions bases PublishStateMachineVersion
's
idempotency check on the stateMachineArn
, name
, and revisionId
parameters.
Requests with the same parameters return a successful idempotent response. If you don't specify a
revisionId
, Step Functions checks for a previously published version of the state machine's current
revision.
Related operations:
publishStateMachineVersion
in interface AWSStepFunctions
publishStateMachineVersionRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.StateMachineDeletingException
- The specified state machine is being deleted.StateMachineDoesNotExistException
- The specified state machine does not exist.ServiceQuotaExceededException
- The request would cause a service quota to be exceeded.
HTTP Status Code: 402
ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.public SendTaskFailureResult sendTaskFailure(SendTaskFailureRequest request)
Used by activity workers and task states using the callback pattern to report that the task identified by the taskToken
failed.
sendTaskFailure
in interface AWSStepFunctions
sendTaskFailureRequest
- TaskDoesNotExistException
InvalidTokenException
- The provided token is not valid.TaskTimedOutException
public SendTaskHeartbeatResult sendTaskHeartbeat(SendTaskHeartbeatRequest request)
Used by activity workers and task states using the callback pattern to report to Step Functions that the task represented by the specified
taskToken
is still making progress. This action resets the Heartbeat
clock. The
Heartbeat
threshold is specified in the state machine's Amazon States Language definition (
HeartbeatSeconds
). This action does not in itself create an event in the execution history. However,
if the task times out, the execution history contains an ActivityTimedOut
entry for activities, or a
TaskTimedOut
entry for for tasks using the job run or
callback pattern.
The Timeout
of a task, defined in the state machine's Amazon States Language definition, is its
maximum allowed duration, regardless of the number of SendTaskHeartbeat requests received. Use
HeartbeatSeconds
to configure the timeout interval for heartbeats.
sendTaskHeartbeat
in interface AWSStepFunctions
sendTaskHeartbeatRequest
- TaskDoesNotExistException
InvalidTokenException
- The provided token is not valid.TaskTimedOutException
public SendTaskSuccessResult sendTaskSuccess(SendTaskSuccessRequest request)
Used by activity workers and task states using the callback pattern to report that the task identified by the taskToken
completed successfully.
sendTaskSuccess
in interface AWSStepFunctions
sendTaskSuccessRequest
- TaskDoesNotExistException
InvalidOutputException
- The provided JSON output data is not valid.InvalidTokenException
- The provided token is not valid.TaskTimedOutException
public StartExecutionResult startExecution(StartExecutionRequest request)
Starts a state machine execution.
A qualified state machine ARN can either refer to a Distributed Map state defined within a state machine, a version ARN, or an alias ARN.
The following are some examples of qualified and unqualified state machine ARNs:
The following qualified state machine ARN refers to a Distributed Map state with a label
mapStateLabel
in a state machine named myStateMachine
.
arn:partition:states:region:account-id:stateMachine:myStateMachine/mapStateLabel
If you provide a qualified state machine ARN that refers to a Distributed Map state, the request fails
with ValidationException
.
The following qualified state machine ARN refers to an alias named PROD
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine:PROD>
If you provide a qualified state machine ARN that refers to a version ARN or an alias ARN, the request starts execution for that version or alias.
The following unqualified state machine ARN refers to a state machine named myStateMachine
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine>
If you start an execution with an unqualified state machine ARN, Step Functions uses the latest revision of the state machine for the execution.
To start executions of a state machine version, call
StartExecution
and provide the version ARN or the ARN of an alias that
points to the version.
StartExecution
is idempotent for STANDARD
workflows. For a STANDARD
workflow, if you call StartExecution
with the same name and input as a running execution, the call
succeeds and return the same response as the original request. If the execution is closed or if the input is
different, it returns a 400 ExecutionAlreadyExists
error. You can reuse names after 90 days.
StartExecution
isn't idempotent for EXPRESS
workflows.
startExecution
in interface AWSStepFunctions
startExecutionRequest
- ExecutionLimitExceededException
- The maximum number of running executions has been reached. Running executions must end or be stopped
before a new execution can be started.ExecutionAlreadyExistsException
- The execution has the same name
as another execution (but a different input
).
Executions with the same name
and input
are considered idempotent.
InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidExecutionInputException
- The provided JSON input data is not valid.InvalidNameException
- The provided name is not valid.StateMachineDoesNotExistException
- The specified state machine does not exist.StateMachineDeletingException
- The specified state machine is being deleted.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.public StartSyncExecutionResult startSyncExecution(StartSyncExecutionRequest request)
Starts a Synchronous Express state machine execution. StartSyncExecution
is not available for
STANDARD
workflows.
StartSyncExecution
will return a 200 OK
response, even if your execution fails, because
the status code in the API response doesn't reflect function errors. Error codes are reserved for errors that
prevent your execution from running, such as permissions errors, limit errors, or issues with your state machine
code and configuration.
This API action isn't logged in CloudTrail.
startSyncExecution
in interface AWSStepFunctions
startSyncExecutionRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidExecutionInputException
- The provided JSON input data is not valid.InvalidNameException
- The provided name is not valid.StateMachineDoesNotExistException
- The specified state machine does not exist.StateMachineDeletingException
- The specified state machine is being deleted.StateMachineTypeNotSupportedException
public StopExecutionResult stopExecution(StopExecutionRequest request)
Stops an execution.
This API action is not supported by EXPRESS
state machines.
stopExecution
in interface AWSStepFunctions
stopExecutionRequest
- ExecutionDoesNotExistException
- The specified execution does not exist.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.public TagResourceResult tagResource(TagResourceRequest request)
Add a tag to a Step Functions resource.
An array of key-value pairs. For more information, see Using Cost Allocation Tags in the Amazon Web Services Billing and Cost Management User Guide, and Controlling Access Using IAM Tags.
Tags may only contain Unicode letters, digits, white space, or these symbols: _ . : / = + - @
.
tagResource
in interface AWSStepFunctions
tagResourceRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.TooManyTagsException
- You've exceeded the number of tags allowed for a resource. See the Limits Topic in the Step
Functions Developer Guide.public UntagResourceResult untagResource(UntagResourceRequest request)
Remove a tag from a Step Functions resource
untagResource
in interface AWSStepFunctions
untagResourceRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.public UpdateMapRunResult updateMapRun(UpdateMapRunRequest request)
Updates an in-progress Map Run's configuration to include changes to the settings that control maximum concurrency and Map Run failure.
updateMapRun
in interface AWSStepFunctions
updateMapRunRequest
- ResourceNotFoundException
- Could not find the referenced resource.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.public UpdateStateMachineResult updateStateMachine(UpdateStateMachineRequest request)
Updates an existing state machine by modifying its definition
, roleArn
, or
loggingConfiguration
. Running executions will continue to use the previous definition
and roleArn
. You must include at least one of definition
or roleArn
or you
will receive a MissingRequiredParameter
error.
A qualified state machine ARN refers to a Distributed Map state defined within a state machine. For
example, the qualified state machine ARN
arn:partition:states:region:account-id:stateMachine:stateMachineName/mapStateLabel
refers to a
Distributed Map state with a label mapStateLabel
in the state machine named
stateMachineName
.
A qualified state machine ARN can either refer to a Distributed Map state defined within a state machine, a version ARN, or an alias ARN.
The following are some examples of qualified and unqualified state machine ARNs:
The following qualified state machine ARN refers to a Distributed Map state with a label
mapStateLabel
in a state machine named myStateMachine
.
arn:partition:states:region:account-id:stateMachine:myStateMachine/mapStateLabel
If you provide a qualified state machine ARN that refers to a Distributed Map state, the request fails
with ValidationException
.
The following qualified state machine ARN refers to an alias named PROD
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine:PROD>
If you provide a qualified state machine ARN that refers to a version ARN or an alias ARN, the request starts execution for that version or alias.
The following unqualified state machine ARN refers to a state machine named myStateMachine
.
arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine>
After you update your state machine, you can set the publish
parameter to true
in the
same action to publish a new version. This
way, you can opt-in to strict versioning of your state machine.
Step Functions assigns monotonically increasing integers for state machine versions, starting at version number 1.
All StartExecution
calls within a few seconds use the updated definition
and
roleArn
. Executions started immediately after you call UpdateStateMachine
may use the
previous state machine definition
and roleArn
.
updateStateMachine
in interface AWSStepFunctions
updateStateMachineRequest
- InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.InvalidDefinitionException
- The provided Amazon States Language definition is not valid.InvalidLoggingConfigurationException
InvalidTracingConfigurationException
- Your tracingConfiguration
key does not match, or enabled
has not been set to
true
or false
.MissingRequiredParameterException
- Request is missing a required parameter. This error occurs if both definition
and
roleArn
are not specified.StateMachineDeletingException
- The specified state machine is being deleted.StateMachineDoesNotExistException
- The specified state machine does not exist.ServiceQuotaExceededException
- The request would cause a service quota to be exceeded.
HTTP Status Code: 402
ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.public UpdateStateMachineAliasResult updateStateMachineAlias(UpdateStateMachineAliasRequest request)
Updates the configuration of an existing state machine alias by
modifying its description
or routingConfiguration
.
You must specify at least one of the description
or routingConfiguration
parameters to
update a state machine alias.
UpdateStateMachineAlias
is an idempotent API. Step Functions bases the idempotency check on the
stateMachineAliasArn
, description
, and routingConfiguration
parameters.
Requests with the same parameters return an idempotent response.
This operation is eventually consistent. All StartExecution requests made within a few seconds use the
latest alias configuration. Executions started immediately after calling UpdateStateMachineAlias
may
use the previous routing configuration.
Related operations:
updateStateMachineAlias
in interface AWSStepFunctions
updateStateMachineAliasRequest
- ValidationException
- The input does not satisfy the constraints specified by an Amazon Web Services service.InvalidArnException
- The provided Amazon Resource Name (ARN) is not valid.ResourceNotFoundException
- Could not find the referenced resource.ConflictException
- Updating or deleting a resource can cause an inconsistent state. This error occurs when there're
concurrent requests for DeleteStateMachineVersion, PublishStateMachineVersion, or
UpdateStateMachine with the publish
parameter set to true
.
HTTP Status Code: 409
public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)
Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing the request.
getCachedResponseMetadata
in interface AWSStepFunctions
request
- The originally executed requestpublic void shutdown()
AWSStepFunctions
shutdown
in interface AWSStepFunctions
shutdown
in class AmazonWebServiceClient
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