api.go

// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.

package sfn

import (
	"time"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/internal/awsutil"
)

const opCreateActivity = "CreateActivity"

// CreateActivityRequest is a API request type for the CreateActivity API operation.
type CreateActivityRequest struct {
	*aws.Request
	Input *CreateActivityInput
	Copy  func(*CreateActivityInput) CreateActivityRequest
}

// Send marshals and sends the CreateActivity API request.
func (r CreateActivityRequest) Send() (*CreateActivityOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*CreateActivityOutput), nil
}

// CreateActivityRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Creates an activity. An activity is a task which you write in any programming
// language and host on any machine which has access to AWS 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.
//
//    // Example sending a request using the CreateActivityRequest method.
//    req := client.CreateActivityRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateActivity
func (c *SFN) CreateActivityRequest(input *CreateActivityInput) CreateActivityRequest {
	op := &aws.Operation{
		Name:       opCreateActivity,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &CreateActivityInput{}
	}

	output := &CreateActivityOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return CreateActivityRequest{Request: req, Input: input, Copy: c.CreateActivityRequest}
}

const opCreateStateMachine = "CreateStateMachine"

// CreateStateMachineRequest is a API request type for the CreateStateMachine API operation.
type CreateStateMachineRequest struct {
	*aws.Request
	Input *CreateStateMachineInput
	Copy  func(*CreateStateMachineInput) CreateStateMachineRequest
}

// Send marshals and sends the CreateStateMachine API request.
func (r CreateStateMachineRequest) Send() (*CreateStateMachineOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*CreateStateMachineOutput), nil
}

// CreateStateMachineRequest returns a request value for making API operation for
// AWS Step Functions.
//
// 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.
//
//    // Example sending a request using the CreateStateMachineRequest method.
//    req := client.CreateStateMachineRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateStateMachine
func (c *SFN) CreateStateMachineRequest(input *CreateStateMachineInput) CreateStateMachineRequest {
	op := &aws.Operation{
		Name:       opCreateStateMachine,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &CreateStateMachineInput{}
	}

	output := &CreateStateMachineOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return CreateStateMachineRequest{Request: req, Input: input, Copy: c.CreateStateMachineRequest}
}

const opDeleteActivity = "DeleteActivity"

// DeleteActivityRequest is a API request type for the DeleteActivity API operation.
type DeleteActivityRequest struct {
	*aws.Request
	Input *DeleteActivityInput
	Copy  func(*DeleteActivityInput) DeleteActivityRequest
}

// Send marshals and sends the DeleteActivity API request.
func (r DeleteActivityRequest) Send() (*DeleteActivityOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DeleteActivityOutput), nil
}

// DeleteActivityRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Deletes an activity.
//
//    // Example sending a request using the DeleteActivityRequest method.
//    req := client.DeleteActivityRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteActivity
func (c *SFN) DeleteActivityRequest(input *DeleteActivityInput) DeleteActivityRequest {
	op := &aws.Operation{
		Name:       opDeleteActivity,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DeleteActivityInput{}
	}

	output := &DeleteActivityOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DeleteActivityRequest{Request: req, Input: input, Copy: c.DeleteActivityRequest}
}

const opDeleteStateMachine = "DeleteStateMachine"

// DeleteStateMachineRequest is a API request type for the DeleteStateMachine API operation.
type DeleteStateMachineRequest struct {
	*aws.Request
	Input *DeleteStateMachineInput
	Copy  func(*DeleteStateMachineInput) DeleteStateMachineRequest
}

// Send marshals and sends the DeleteStateMachine API request.
func (r DeleteStateMachineRequest) Send() (*DeleteStateMachineOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DeleteStateMachineOutput), nil
}

// DeleteStateMachineRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Deletes a state machine. This is an asynchronous operation: It sets the state
// machine's status to DELETING and begins the deletion process. Each state
// machine execution is deleted the next time it makes a state transition.
//
// The state machine itself is deleted after all executions are completed or
// deleted.
//
//    // Example sending a request using the DeleteStateMachineRequest method.
//    req := client.DeleteStateMachineRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteStateMachine
func (c *SFN) DeleteStateMachineRequest(input *DeleteStateMachineInput) DeleteStateMachineRequest {
	op := &aws.Operation{
		Name:       opDeleteStateMachine,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DeleteStateMachineInput{}
	}

	output := &DeleteStateMachineOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DeleteStateMachineRequest{Request: req, Input: input, Copy: c.DeleteStateMachineRequest}
}

const opDescribeActivity = "DescribeActivity"

// DescribeActivityRequest is a API request type for the DescribeActivity API operation.
type DescribeActivityRequest struct {
	*aws.Request
	Input *DescribeActivityInput
	Copy  func(*DescribeActivityInput) DescribeActivityRequest
}

// Send marshals and sends the DescribeActivity API request.
func (r DescribeActivityRequest) Send() (*DescribeActivityOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DescribeActivityOutput), nil
}

// DescribeActivityRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Describes an activity.
//
//    // Example sending a request using the DescribeActivityRequest method.
//    req := client.DescribeActivityRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeActivity
func (c *SFN) DescribeActivityRequest(input *DescribeActivityInput) DescribeActivityRequest {
	op := &aws.Operation{
		Name:       opDescribeActivity,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DescribeActivityInput{}
	}

	output := &DescribeActivityOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DescribeActivityRequest{Request: req, Input: input, Copy: c.DescribeActivityRequest}
}

const opDescribeExecution = "DescribeExecution"

// DescribeExecutionRequest is a API request type for the DescribeExecution API operation.
type DescribeExecutionRequest struct {
	*aws.Request
	Input *DescribeExecutionInput
	Copy  func(*DescribeExecutionInput) DescribeExecutionRequest
}

// Send marshals and sends the DescribeExecution API request.
func (r DescribeExecutionRequest) Send() (*DescribeExecutionOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DescribeExecutionOutput), nil
}

// DescribeExecutionRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Describes an execution.
//
//    // Example sending a request using the DescribeExecutionRequest method.
//    req := client.DescribeExecutionRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeExecution
func (c *SFN) DescribeExecutionRequest(input *DescribeExecutionInput) DescribeExecutionRequest {
	op := &aws.Operation{
		Name:       opDescribeExecution,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DescribeExecutionInput{}
	}

	output := &DescribeExecutionOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DescribeExecutionRequest{Request: req, Input: input, Copy: c.DescribeExecutionRequest}
}

const opDescribeStateMachine = "DescribeStateMachine"

// DescribeStateMachineRequest is a API request type for the DescribeStateMachine API operation.
type DescribeStateMachineRequest struct {
	*aws.Request
	Input *DescribeStateMachineInput
	Copy  func(*DescribeStateMachineInput) DescribeStateMachineRequest
}

// Send marshals and sends the DescribeStateMachine API request.
func (r DescribeStateMachineRequest) Send() (*DescribeStateMachineOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DescribeStateMachineOutput), nil
}

// DescribeStateMachineRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Describes a state machine.
//
//    // Example sending a request using the DescribeStateMachineRequest method.
//    req := client.DescribeStateMachineRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachine
func (c *SFN) DescribeStateMachineRequest(input *DescribeStateMachineInput) DescribeStateMachineRequest {
	op := &aws.Operation{
		Name:       opDescribeStateMachine,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DescribeStateMachineInput{}
	}

	output := &DescribeStateMachineOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DescribeStateMachineRequest{Request: req, Input: input, Copy: c.DescribeStateMachineRequest}
}

const opDescribeStateMachineForExecution = "DescribeStateMachineForExecution"

// DescribeStateMachineForExecutionRequest is a API request type for the DescribeStateMachineForExecution API operation.
type DescribeStateMachineForExecutionRequest struct {
	*aws.Request
	Input *DescribeStateMachineForExecutionInput
	Copy  func(*DescribeStateMachineForExecutionInput) DescribeStateMachineForExecutionRequest
}

// Send marshals and sends the DescribeStateMachineForExecution API request.
func (r DescribeStateMachineForExecutionRequest) Send() (*DescribeStateMachineForExecutionOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*DescribeStateMachineForExecutionOutput), nil
}

// DescribeStateMachineForExecutionRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Describes the state machine associated with a specific execution.
//
//    // Example sending a request using the DescribeStateMachineForExecutionRequest method.
//    req := client.DescribeStateMachineForExecutionRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachineForExecution
func (c *SFN) DescribeStateMachineForExecutionRequest(input *DescribeStateMachineForExecutionInput) DescribeStateMachineForExecutionRequest {
	op := &aws.Operation{
		Name:       opDescribeStateMachineForExecution,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &DescribeStateMachineForExecutionInput{}
	}

	output := &DescribeStateMachineForExecutionOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return DescribeStateMachineForExecutionRequest{Request: req, Input: input, Copy: c.DescribeStateMachineForExecutionRequest}
}

const opGetActivityTask = "GetActivityTask"

// GetActivityTaskRequest is a API request type for the GetActivityTask API operation.
type GetActivityTaskRequest struct {
	*aws.Request
	Input *GetActivityTaskInput
	Copy  func(*GetActivityTaskInput) GetActivityTaskRequest
}

// Send marshals and sends the GetActivityTask API request.
func (r GetActivityTaskRequest) Send() (*GetActivityTaskOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*GetActivityTaskOutput), nil
}

// GetActivityTaskRequest returns a request value for making API operation for
// AWS Step Functions.
//
// 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.
//
// 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).
//
//    // Example sending a request using the GetActivityTaskRequest method.
//    req := client.GetActivityTaskRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetActivityTask
func (c *SFN) GetActivityTaskRequest(input *GetActivityTaskInput) GetActivityTaskRequest {
	op := &aws.Operation{
		Name:       opGetActivityTask,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &GetActivityTaskInput{}
	}

	output := &GetActivityTaskOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return GetActivityTaskRequest{Request: req, Input: input, Copy: c.GetActivityTaskRequest}
}

const opGetExecutionHistory = "GetExecutionHistory"

// GetExecutionHistoryRequest is a API request type for the GetExecutionHistory API operation.
type GetExecutionHistoryRequest struct {
	*aws.Request
	Input *GetExecutionHistoryInput
	Copy  func(*GetExecutionHistoryInput) GetExecutionHistoryRequest
}

// Send marshals and sends the GetExecutionHistory API request.
func (r GetExecutionHistoryRequest) Send() (*GetExecutionHistoryOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*GetExecutionHistoryOutput), nil
}

// GetExecutionHistoryRequest returns a request value for making API operation for
// AWS Step Functions.
//
// 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 a nextToken is returned by a previous call, there are more results available.
// To retrieve the next page of results, make the call again using the returned
// token in nextToken. Keep all other arguments unchanged.
//
//    // Example sending a request using the GetExecutionHistoryRequest method.
//    req := client.GetExecutionHistoryRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetExecutionHistory
func (c *SFN) GetExecutionHistoryRequest(input *GetExecutionHistoryInput) GetExecutionHistoryRequest {
	op := &aws.Operation{
		Name:       opGetExecutionHistory,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"nextToken"},
			OutputTokens:    []string{"nextToken"},
			LimitToken:      "maxResults",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &GetExecutionHistoryInput{}
	}

	output := &GetExecutionHistoryOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return GetExecutionHistoryRequest{Request: req, Input: input, Copy: c.GetExecutionHistoryRequest}
}

// Paginate pages iterates over the pages of a GetExecutionHistoryRequest operation,
// calling the Next method for each page. Using the paginators Next
// method will depict whether or not there are more pages.
//
// Note: This operation can generate multiple requests to a service.
//
//    // Example iterating over at most 3 pages of a GetExecutionHistory operation.
//		req := client.GetExecutionHistoryRequest(input)
//		p := req.Paginate()
//		for p.Next() {
//			page := p.CurrentPage()
//		}
//
//		if err := p.Err(); err != nil {
//			return err
//		}
//
func (p *GetExecutionHistoryRequest) Paginate(opts ...aws.Option) GetExecutionHistoryPager {
	return GetExecutionHistoryPager{
		Pager: aws.Pager{
			NewRequest: func() (*aws.Request, error) {
				var inCpy *GetExecutionHistoryInput
				if p.Input != nil {
					tmp := *p.Input
					inCpy = &tmp
				}

				req := p.Copy(inCpy)
				req.ApplyOptions(opts...)

				return req.Request, nil
			},
		},
	}
}

// GetExecutionHistoryPager is used to paginate the request. This can be done by
// calling Next and CurrentPage.
type GetExecutionHistoryPager struct {
	aws.Pager
}

func (p *GetExecutionHistoryPager) CurrentPage() *GetExecutionHistoryOutput {
	return p.Pager.CurrentPage().(*GetExecutionHistoryOutput)
}

const opListActivities = "ListActivities"

// ListActivitiesRequest is a API request type for the ListActivities API operation.
type ListActivitiesRequest struct {
	*aws.Request
	Input *ListActivitiesInput
	Copy  func(*ListActivitiesInput) ListActivitiesRequest
}

// Send marshals and sends the ListActivities API request.
func (r ListActivitiesRequest) Send() (*ListActivitiesOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*ListActivitiesOutput), nil
}

// ListActivitiesRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Lists the existing activities.
//
// If a nextToken is returned by a previous call, there are more results available.
// To retrieve the next page of results, make the call again using the returned
// token in nextToken. Keep all other arguments unchanged.
//
//    // Example sending a request using the ListActivitiesRequest method.
//    req := client.ListActivitiesRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListActivities
func (c *SFN) ListActivitiesRequest(input *ListActivitiesInput) ListActivitiesRequest {
	op := &aws.Operation{
		Name:       opListActivities,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"nextToken"},
			OutputTokens:    []string{"nextToken"},
			LimitToken:      "maxResults",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &ListActivitiesInput{}
	}

	output := &ListActivitiesOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return ListActivitiesRequest{Request: req, Input: input, Copy: c.ListActivitiesRequest}
}

// Paginate pages iterates over the pages of a ListActivitiesRequest operation,
// calling the Next method for each page. Using the paginators Next
// method will depict whether or not there are more pages.
//
// Note: This operation can generate multiple requests to a service.
//
//    // Example iterating over at most 3 pages of a ListActivities operation.
//		req := client.ListActivitiesRequest(input)
//		p := req.Paginate()
//		for p.Next() {
//			page := p.CurrentPage()
//		}
//
//		if err := p.Err(); err != nil {
//			return err
//		}
//
func (p *ListActivitiesRequest) Paginate(opts ...aws.Option) ListActivitiesPager {
	return ListActivitiesPager{
		Pager: aws.Pager{
			NewRequest: func() (*aws.Request, error) {
				var inCpy *ListActivitiesInput
				if p.Input != nil {
					tmp := *p.Input
					inCpy = &tmp
				}

				req := p.Copy(inCpy)
				req.ApplyOptions(opts...)

				return req.Request, nil
			},
		},
	}
}

// ListActivitiesPager is used to paginate the request. This can be done by
// calling Next and CurrentPage.
type ListActivitiesPager struct {
	aws.Pager
}

func (p *ListActivitiesPager) CurrentPage() *ListActivitiesOutput {
	return p.Pager.CurrentPage().(*ListActivitiesOutput)
}

const opListExecutions = "ListExecutions"

// ListExecutionsRequest is a API request type for the ListExecutions API operation.
type ListExecutionsRequest struct {
	*aws.Request
	Input *ListExecutionsInput
	Copy  func(*ListExecutionsInput) ListExecutionsRequest
}

// Send marshals and sends the ListExecutions API request.
func (r ListExecutionsRequest) Send() (*ListExecutionsOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*ListExecutionsOutput), nil
}

// ListExecutionsRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Lists the executions of a state machine that meet the filtering criteria.
//
// If a nextToken is returned by a previous call, there are more results available.
// To retrieve the next page of results, make the call again using the returned
// token in nextToken. Keep all other arguments unchanged.
//
//    // Example sending a request using the ListExecutionsRequest method.
//    req := client.ListExecutionsRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListExecutions
func (c *SFN) ListExecutionsRequest(input *ListExecutionsInput) ListExecutionsRequest {
	op := &aws.Operation{
		Name:       opListExecutions,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"nextToken"},
			OutputTokens:    []string{"nextToken"},
			LimitToken:      "maxResults",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &ListExecutionsInput{}
	}

	output := &ListExecutionsOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return ListExecutionsRequest{Request: req, Input: input, Copy: c.ListExecutionsRequest}
}

// Paginate pages iterates over the pages of a ListExecutionsRequest operation,
// calling the Next method for each page. Using the paginators Next
// method will depict whether or not there are more pages.
//
// Note: This operation can generate multiple requests to a service.
//
//    // Example iterating over at most 3 pages of a ListExecutions operation.
//		req := client.ListExecutionsRequest(input)
//		p := req.Paginate()
//		for p.Next() {
//			page := p.CurrentPage()
//		}
//
//		if err := p.Err(); err != nil {
//			return err
//		}
//
func (p *ListExecutionsRequest) Paginate(opts ...aws.Option) ListExecutionsPager {
	return ListExecutionsPager{
		Pager: aws.Pager{
			NewRequest: func() (*aws.Request, error) {
				var inCpy *ListExecutionsInput
				if p.Input != nil {
					tmp := *p.Input
					inCpy = &tmp
				}

				req := p.Copy(inCpy)
				req.ApplyOptions(opts...)

				return req.Request, nil
			},
		},
	}
}

// ListExecutionsPager is used to paginate the request. This can be done by
// calling Next and CurrentPage.
type ListExecutionsPager struct {
	aws.Pager
}

func (p *ListExecutionsPager) CurrentPage() *ListExecutionsOutput {
	return p.Pager.CurrentPage().(*ListExecutionsOutput)
}

const opListStateMachines = "ListStateMachines"

// ListStateMachinesRequest is a API request type for the ListStateMachines API operation.
type ListStateMachinesRequest struct {
	*aws.Request
	Input *ListStateMachinesInput
	Copy  func(*ListStateMachinesInput) ListStateMachinesRequest
}

// Send marshals and sends the ListStateMachines API request.
func (r ListStateMachinesRequest) Send() (*ListStateMachinesOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*ListStateMachinesOutput), nil
}

// ListStateMachinesRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Lists the existing state machines.
//
// If a nextToken is returned by a previous call, there are more results available.
// To retrieve the next page of results, make the call again using the returned
// token in nextToken. Keep all other arguments unchanged.
//
//    // Example sending a request using the ListStateMachinesRequest method.
//    req := client.ListStateMachinesRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListStateMachines
func (c *SFN) ListStateMachinesRequest(input *ListStateMachinesInput) ListStateMachinesRequest {
	op := &aws.Operation{
		Name:       opListStateMachines,
		HTTPMethod: "POST",
		HTTPPath:   "/",
		Paginator: &aws.Paginator{
			InputTokens:     []string{"nextToken"},
			OutputTokens:    []string{"nextToken"},
			LimitToken:      "maxResults",
			TruncationToken: "",
		},
	}

	if input == nil {
		input = &ListStateMachinesInput{}
	}

	output := &ListStateMachinesOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return ListStateMachinesRequest{Request: req, Input: input, Copy: c.ListStateMachinesRequest}
}

// Paginate pages iterates over the pages of a ListStateMachinesRequest operation,
// calling the Next method for each page. Using the paginators Next
// method will depict whether or not there are more pages.
//
// Note: This operation can generate multiple requests to a service.
//
//    // Example iterating over at most 3 pages of a ListStateMachines operation.
//		req := client.ListStateMachinesRequest(input)
//		p := req.Paginate()
//		for p.Next() {
//			page := p.CurrentPage()
//		}
//
//		if err := p.Err(); err != nil {
//			return err
//		}
//
func (p *ListStateMachinesRequest) Paginate(opts ...aws.Option) ListStateMachinesPager {
	return ListStateMachinesPager{
		Pager: aws.Pager{
			NewRequest: func() (*aws.Request, error) {
				var inCpy *ListStateMachinesInput
				if p.Input != nil {
					tmp := *p.Input
					inCpy = &tmp
				}

				req := p.Copy(inCpy)
				req.ApplyOptions(opts...)

				return req.Request, nil
			},
		},
	}
}

// ListStateMachinesPager is used to paginate the request. This can be done by
// calling Next and CurrentPage.
type ListStateMachinesPager struct {
	aws.Pager
}

func (p *ListStateMachinesPager) CurrentPage() *ListStateMachinesOutput {
	return p.Pager.CurrentPage().(*ListStateMachinesOutput)
}

const opSendTaskFailure = "SendTaskFailure"

// SendTaskFailureRequest is a API request type for the SendTaskFailure API operation.
type SendTaskFailureRequest struct {
	*aws.Request
	Input *SendTaskFailureInput
	Copy  func(*SendTaskFailureInput) SendTaskFailureRequest
}

// Send marshals and sends the SendTaskFailure API request.
func (r SendTaskFailureRequest) Send() (*SendTaskFailureOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*SendTaskFailureOutput), nil
}

// SendTaskFailureRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Used by workers to report that the task identified by the taskToken failed.
//
//    // Example sending a request using the SendTaskFailureRequest method.
//    req := client.SendTaskFailureRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskFailure
func (c *SFN) SendTaskFailureRequest(input *SendTaskFailureInput) SendTaskFailureRequest {
	op := &aws.Operation{
		Name:       opSendTaskFailure,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &SendTaskFailureInput{}
	}

	output := &SendTaskFailureOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return SendTaskFailureRequest{Request: req, Input: input, Copy: c.SendTaskFailureRequest}
}

const opSendTaskHeartbeat = "SendTaskHeartbeat"

// SendTaskHeartbeatRequest is a API request type for the SendTaskHeartbeat API operation.
type SendTaskHeartbeatRequest struct {
	*aws.Request
	Input *SendTaskHeartbeatInput
	Copy  func(*SendTaskHeartbeatInput) SendTaskHeartbeatRequest
}

// Send marshals and sends the SendTaskHeartbeat API request.
func (r SendTaskHeartbeatRequest) Send() (*SendTaskHeartbeatOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*SendTaskHeartbeatOutput), nil
}

// SendTaskHeartbeatRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Used by workers to report to the service 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. 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 event.
//
// 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.
//
// This operation is only useful for long-lived tasks to report the liveliness
// of the task.
//
//    // Example sending a request using the SendTaskHeartbeatRequest method.
//    req := client.SendTaskHeartbeatRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskHeartbeat
func (c *SFN) SendTaskHeartbeatRequest(input *SendTaskHeartbeatInput) SendTaskHeartbeatRequest {
	op := &aws.Operation{
		Name:       opSendTaskHeartbeat,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &SendTaskHeartbeatInput{}
	}

	output := &SendTaskHeartbeatOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return SendTaskHeartbeatRequest{Request: req, Input: input, Copy: c.SendTaskHeartbeatRequest}
}

const opSendTaskSuccess = "SendTaskSuccess"

// SendTaskSuccessRequest is a API request type for the SendTaskSuccess API operation.
type SendTaskSuccessRequest struct {
	*aws.Request
	Input *SendTaskSuccessInput
	Copy  func(*SendTaskSuccessInput) SendTaskSuccessRequest
}

// Send marshals and sends the SendTaskSuccess API request.
func (r SendTaskSuccessRequest) Send() (*SendTaskSuccessOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*SendTaskSuccessOutput), nil
}

// SendTaskSuccessRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Used by workers to report that the task identified by the taskToken completed
// successfully.
//
//    // Example sending a request using the SendTaskSuccessRequest method.
//    req := client.SendTaskSuccessRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskSuccess
func (c *SFN) SendTaskSuccessRequest(input *SendTaskSuccessInput) SendTaskSuccessRequest {
	op := &aws.Operation{
		Name:       opSendTaskSuccess,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &SendTaskSuccessInput{}
	}

	output := &SendTaskSuccessOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return SendTaskSuccessRequest{Request: req, Input: input, Copy: c.SendTaskSuccessRequest}
}

const opStartExecution = "StartExecution"

// StartExecutionRequest is a API request type for the StartExecution API operation.
type StartExecutionRequest struct {
	*aws.Request
	Input *StartExecutionInput
	Copy  func(*StartExecutionInput) StartExecutionRequest
}

// Send marshals and sends the StartExecution API request.
func (r StartExecutionRequest) Send() (*StartExecutionOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*StartExecutionOutput), nil
}

// StartExecutionRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Starts a state machine execution.
//
//    // Example sending a request using the StartExecutionRequest method.
//    req := client.StartExecutionRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StartExecution
func (c *SFN) StartExecutionRequest(input *StartExecutionInput) StartExecutionRequest {
	op := &aws.Operation{
		Name:       opStartExecution,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &StartExecutionInput{}
	}

	output := &StartExecutionOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return StartExecutionRequest{Request: req, Input: input, Copy: c.StartExecutionRequest}
}

const opStopExecution = "StopExecution"

// StopExecutionRequest is a API request type for the StopExecution API operation.
type StopExecutionRequest struct {
	*aws.Request
	Input *StopExecutionInput
	Copy  func(*StopExecutionInput) StopExecutionRequest
}

// Send marshals and sends the StopExecution API request.
func (r StopExecutionRequest) Send() (*StopExecutionOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*StopExecutionOutput), nil
}

// StopExecutionRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Stops an execution.
//
//    // Example sending a request using the StopExecutionRequest method.
//    req := client.StopExecutionRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StopExecution
func (c *SFN) StopExecutionRequest(input *StopExecutionInput) StopExecutionRequest {
	op := &aws.Operation{
		Name:       opStopExecution,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &StopExecutionInput{}
	}

	output := &StopExecutionOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return StopExecutionRequest{Request: req, Input: input, Copy: c.StopExecutionRequest}
}

const opUpdateStateMachine = "UpdateStateMachine"

// UpdateStateMachineRequest is a API request type for the UpdateStateMachine API operation.
type UpdateStateMachineRequest struct {
	*aws.Request
	Input *UpdateStateMachineInput
	Copy  func(*UpdateStateMachineInput) UpdateStateMachineRequest
}

// Send marshals and sends the UpdateStateMachine API request.
func (r UpdateStateMachineRequest) Send() (*UpdateStateMachineOutput, error) {
	err := r.Request.Send()
	if err != nil {
		return nil, err
	}

	return r.Request.Data.(*UpdateStateMachineOutput), nil
}

// UpdateStateMachineRequest returns a request value for making API operation for
// AWS Step Functions.
//
// Updates an existing state machine by modifying its definition and/or roleArn.
// Running executions will continue to use the previous definition and roleArn.
//
// All StartExecution calls within a few seconds will use the updated definition
// and roleArn. Executions started immediately after calling UpdateStateMachine
// may use the previous state machine definition and roleArn. You must include
// at least one of definition or roleArn or you will receive a MissingRequiredParameter
// error.
//
//    // Example sending a request using the UpdateStateMachineRequest method.
//    req := client.UpdateStateMachineRequest(params)
//    resp, err := req.Send()
//    if err == nil {
//        fmt.Println(resp)
//    }
//
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/UpdateStateMachine
func (c *SFN) UpdateStateMachineRequest(input *UpdateStateMachineInput) UpdateStateMachineRequest {
	op := &aws.Operation{
		Name:       opUpdateStateMachine,
		HTTPMethod: "POST",
		HTTPPath:   "/",
	}

	if input == nil {
		input = &UpdateStateMachineInput{}
	}

	output := &UpdateStateMachineOutput{}
	req := c.newRequest(op, input, output)
	output.responseMetadata = aws.Response{Request: req}

	return UpdateStateMachineRequest{Request: req, Input: input, Copy: c.UpdateStateMachineRequest}
}

// Contains details about an activity which failed during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityFailedEventDetails
type ActivityFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ActivityFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about an activity.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityListItem
type ActivityListItem struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) that identifies the activity.
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`

	// The date the activity is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The name of the activity.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s ActivityListItem) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityListItem) GoString() string {
	return s.String()
}

// Contains details about an activity schedule failure which occurred during
// an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityScheduleFailedEventDetails
type ActivityScheduleFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ActivityScheduleFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityScheduleFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about an activity scheduled during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityScheduledEventDetails
type ActivityScheduledEventDetails struct {
	_ struct{} `type:"structure"`

	// The maximum allowed duration between two heartbeats for the activity task.
	HeartbeatInSeconds *int64 `locationName:"heartbeatInSeconds" type:"long"`

	// The JSON data input to the activity task.
	Input *string `locationName:"input" type:"string"`

	// The Amazon Resource Name (ARN) of the scheduled activity.
	//
	// Resource is a required field
	Resource *string `locationName:"resource" min:"1" type:"string" required:"true"`

	// The maximum allowed duration of the activity task.
	TimeoutInSeconds *int64 `locationName:"timeoutInSeconds" type:"long"`
}

// String returns the string representation
func (s ActivityScheduledEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityScheduledEventDetails) GoString() string {
	return s.String()
}

// Contains details about the start of an activity during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityStartedEventDetails
type ActivityStartedEventDetails struct {
	_ struct{} `type:"structure"`

	// The name of the worker that the task is assigned to. These names are provided
	// by the workers when calling GetActivityTask.
	WorkerName *string `locationName:"workerName" type:"string"`
}

// String returns the string representation
func (s ActivityStartedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityStartedEventDetails) GoString() string {
	return s.String()
}

// Contains details about an activity which successfully terminated during an
// execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivitySucceededEventDetails
type ActivitySucceededEventDetails struct {
	_ struct{} `type:"structure"`

	// The JSON data output by the activity task.
	Output *string `locationName:"output" type:"string"`
}

// String returns the string representation
func (s ActivitySucceededEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivitySucceededEventDetails) GoString() string {
	return s.String()
}

// Contains details about an activity timeout which occurred during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ActivityTimedOutEventDetails
type ActivityTimedOutEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the timeout.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ActivityTimedOutEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActivityTimedOutEventDetails) GoString() string {
	return s.String()
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateActivityInput
type CreateActivityInput struct {
	_ struct{} `type:"structure"`

	// The name of the activity to create. This name must be unique for your AWS
	// account and region for 90 days. For more information, see  Limits Related
	// to State Machine Executions (http://docs.aws.amazon.com/step-functions/latest/dg/limits.html#service-limits-state-machine-executions)
	// in the AWS Step Functions Developer Guide.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s CreateActivityInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s CreateActivityInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *CreateActivityInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "CreateActivityInput"}

	if s.Name == nil {
		invalidParams.Add(aws.NewErrParamRequired("Name"))
	}
	if s.Name != nil && len(*s.Name) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("Name", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateActivityOutput
type CreateActivityOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The Amazon Resource Name (ARN) that identifies the created activity.
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`

	// The date the activity is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`
}

// String returns the string representation
func (s CreateActivityOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s CreateActivityOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s CreateActivityOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateStateMachineInput
type CreateStateMachineInput struct {
	_ struct{} `type:"structure"`

	// The Amazon States Language definition of the state machine.
	//
	// Definition is a required field
	Definition *string `locationName:"definition" min:"1" type:"string" required:"true"`

	// The name of the state machine. This name must be unique for your AWS account
	// and region for 90 days. For more information, see  Limits Related to State
	// Machine Executions (http://docs.aws.amazon.com/step-functions/latest/dg/limits.html#service-limits-state-machine-executions)
	// in the AWS Step Functions Developer Guide.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) of the IAM role to use for this state machine.
	//
	// RoleArn is a required field
	RoleArn *string `locationName:"roleArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s CreateStateMachineInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s CreateStateMachineInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *CreateStateMachineInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "CreateStateMachineInput"}

	if s.Definition == nil {
		invalidParams.Add(aws.NewErrParamRequired("Definition"))
	}
	if s.Definition != nil && len(*s.Definition) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("Definition", 1))
	}

	if s.Name == nil {
		invalidParams.Add(aws.NewErrParamRequired("Name"))
	}
	if s.Name != nil && len(*s.Name) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("Name", 1))
	}

	if s.RoleArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("RoleArn"))
	}
	if s.RoleArn != nil && len(*s.RoleArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("RoleArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/CreateStateMachineOutput
type CreateStateMachineOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The date the state machine is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The Amazon Resource Name (ARN) that identifies the created state machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s CreateStateMachineOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s CreateStateMachineOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s CreateStateMachineOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteActivityInput
type DeleteActivityInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the activity to delete.
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DeleteActivityInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteActivityInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DeleteActivityInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DeleteActivityInput"}

	if s.ActivityArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ActivityArn"))
	}
	if s.ActivityArn != nil && len(*s.ActivityArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ActivityArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteActivityOutput
type DeleteActivityOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response
}

// String returns the string representation
func (s DeleteActivityOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteActivityOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DeleteActivityOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteStateMachineInput
type DeleteStateMachineInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the state machine to delete.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DeleteStateMachineInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteStateMachineInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DeleteStateMachineInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DeleteStateMachineInput"}

	if s.StateMachineArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("StateMachineArn"))
	}
	if s.StateMachineArn != nil && len(*s.StateMachineArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StateMachineArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DeleteStateMachineOutput
type DeleteStateMachineOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response
}

// String returns the string representation
func (s DeleteStateMachineOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteStateMachineOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DeleteStateMachineOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeActivityInput
type DescribeActivityInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the activity to describe.
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DescribeActivityInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeActivityInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DescribeActivityInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DescribeActivityInput"}

	if s.ActivityArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ActivityArn"))
	}
	if s.ActivityArn != nil && len(*s.ActivityArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ActivityArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeActivityOutput
type DescribeActivityOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The Amazon Resource Name (ARN) that identifies the activity.
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`

	// The date the activity is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The name of the activity.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DescribeActivityOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeActivityOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DescribeActivityOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeExecutionInput
type DescribeExecutionInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the execution to describe.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DescribeExecutionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeExecutionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DescribeExecutionInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DescribeExecutionInput"}

	if s.ExecutionArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ExecutionArn"))
	}
	if s.ExecutionArn != nil && len(*s.ExecutionArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ExecutionArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeExecutionOutput
type DescribeExecutionOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The Amazon Resource Name (ARN) that identifies the execution.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`

	// The string that contains the JSON input data of the execution.
	//
	// Input is a required field
	Input *string `locationName:"input" type:"string" required:"true"`

	// The name of the execution.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	Name *string `locationName:"name" min:"1" type:"string"`

	// The JSON output data of the execution.
	//
	// This field is set only if the execution succeeds. If the execution fails,
	// this field is null.
	Output *string `locationName:"output" type:"string"`

	// The date the execution is started.
	//
	// StartDate is a required field
	StartDate *time.Time `locationName:"startDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The Amazon Resource Name (ARN) of the executed stated machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`

	// The current status of the execution.
	//
	// Status is a required field
	Status ExecutionStatus `locationName:"status" type:"string" required:"true" enum:"true"`

	// If the execution has already ended, the date the execution stopped.
	StopDate *time.Time `locationName:"stopDate" type:"timestamp" timestampFormat:"unix"`
}

// String returns the string representation
func (s DescribeExecutionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeExecutionOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DescribeExecutionOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachineForExecutionInput
type DescribeStateMachineForExecutionInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the execution you want state machine information
	// for.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DescribeStateMachineForExecutionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeStateMachineForExecutionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DescribeStateMachineForExecutionInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DescribeStateMachineForExecutionInput"}

	if s.ExecutionArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ExecutionArn"))
	}
	if s.ExecutionArn != nil && len(*s.ExecutionArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ExecutionArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachineForExecutionOutput
type DescribeStateMachineForExecutionOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The Amazon States Language definition of the state machine.
	//
	// Definition is a required field
	Definition *string `locationName:"definition" min:"1" type:"string" required:"true"`

	// The name of the state machine associated with the execution.
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) of the IAM role of the State Machine for the
	// execution.
	//
	// RoleArn is a required field
	RoleArn *string `locationName:"roleArn" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) of the state machine associated with the execution.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`

	// The date and time the state machine associated with an execution was updated.
	// For a newly created state machine, this is the creation date.
	//
	// UpdateDate is a required field
	UpdateDate *time.Time `locationName:"updateDate" type:"timestamp" timestampFormat:"unix" required:"true"`
}

// String returns the string representation
func (s DescribeStateMachineForExecutionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeStateMachineForExecutionOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DescribeStateMachineForExecutionOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachineInput
type DescribeStateMachineInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the state machine to describe.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s DescribeStateMachineInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeStateMachineInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DescribeStateMachineInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "DescribeStateMachineInput"}

	if s.StateMachineArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("StateMachineArn"))
	}
	if s.StateMachineArn != nil && len(*s.StateMachineArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StateMachineArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/DescribeStateMachineOutput
type DescribeStateMachineOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The date the state machine is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The Amazon States Language definition of the state machine.
	//
	// Definition is a required field
	Definition *string `locationName:"definition" min:"1" type:"string" required:"true"`

	// The name of the state machine.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) of the IAM role used when creating this state
	// machine. (The IAM role maintains security by granting Step Functions access
	// to AWS resources.)
	//
	// RoleArn is a required field
	RoleArn *string `locationName:"roleArn" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) that identifies the state machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`

	// The current status of the state machine.
	Status StateMachineStatus `locationName:"status" type:"string" enum:"true"`
}

// String returns the string representation
func (s DescribeStateMachineOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DescribeStateMachineOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s DescribeStateMachineOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Contains details about an abort of an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionAbortedEventDetails
type ExecutionAbortedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ExecutionAbortedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionAbortedEventDetails) GoString() string {
	return s.String()
}

// Contains details about an execution failure event.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionFailedEventDetails
type ExecutionFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ExecutionFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionListItem
type ExecutionListItem struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) that identifies the execution.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`

	// The name of the execution.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The date the execution started.
	//
	// StartDate is a required field
	StartDate *time.Time `locationName:"startDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The Amazon Resource Name (ARN) of the executed state machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`

	// The current status of the execution.
	//
	// Status is a required field
	Status ExecutionStatus `locationName:"status" type:"string" required:"true" enum:"true"`

	// If the execution already ended, the date the execution stopped.
	StopDate *time.Time `locationName:"stopDate" type:"timestamp" timestampFormat:"unix"`
}

// String returns the string representation
func (s ExecutionListItem) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionListItem) GoString() string {
	return s.String()
}

// Contains details about the start of the execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionStartedEventDetails
type ExecutionStartedEventDetails struct {
	_ struct{} `type:"structure"`

	// The JSON data input to the execution.
	Input *string `locationName:"input" type:"string"`

	// The Amazon Resource Name (ARN) of the IAM role used for executing AWS Lambda
	// tasks.
	RoleArn *string `locationName:"roleArn" min:"1" type:"string"`
}

// String returns the string representation
func (s ExecutionStartedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionStartedEventDetails) GoString() string {
	return s.String()
}

// Contains details about the successful termination of the execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionSucceededEventDetails
type ExecutionSucceededEventDetails struct {
	_ struct{} `type:"structure"`

	// The JSON data output by the execution.
	Output *string `locationName:"output" type:"string"`
}

// String returns the string representation
func (s ExecutionSucceededEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionSucceededEventDetails) GoString() string {
	return s.String()
}

// Contains details about the execution timeout which occurred during the execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ExecutionTimedOutEventDetails
type ExecutionTimedOutEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the timeout.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s ExecutionTimedOutEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ExecutionTimedOutEventDetails) GoString() string {
	return s.String()
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetActivityTaskInput
type GetActivityTaskInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the activity to retrieve tasks from (assigned
	// when you create the task using CreateActivity.)
	//
	// ActivityArn is a required field
	ActivityArn *string `locationName:"activityArn" min:"1" type:"string" required:"true"`

	// You can provide an arbitrary name in order to identify the worker that the
	// task is assigned to. This name is used when it is logged in the execution
	// history.
	WorkerName *string `locationName:"workerName" min:"1" type:"string"`
}

// String returns the string representation
func (s GetActivityTaskInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetActivityTaskInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *GetActivityTaskInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "GetActivityTaskInput"}

	if s.ActivityArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ActivityArn"))
	}
	if s.ActivityArn != nil && len(*s.ActivityArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ActivityArn", 1))
	}
	if s.WorkerName != nil && len(*s.WorkerName) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("WorkerName", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetActivityTaskOutput
type GetActivityTaskOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The string that contains the JSON input data for the task.
	Input *string `locationName:"input" type:"string"`

	// A token that identifies the scheduled task. This token must be copied and
	// included in subsequent calls to SendTaskHeartbeat, SendTaskSuccess or SendTaskFailure
	// in order to report the progress or completion of the task.
	TaskToken *string `locationName:"taskToken" min:"1" type:"string"`
}

// String returns the string representation
func (s GetActivityTaskOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetActivityTaskOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s GetActivityTaskOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetExecutionHistoryInput
type GetExecutionHistoryInput struct {
	_ struct{} `type:"structure"`

	// The Amazon Resource Name (ARN) of the execution.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`

	// The maximum number of results that are returned per call. You can use nextToken
	// to obtain further pages of results. The default is 100 and the maximum allowed
	// page size is 100. A value of 0 uses the default.
	//
	// This is only an upper limit. The actual number of results returned per call
	// might be fewer than the specified maximum.
	MaxResults *int64 `locationName:"maxResults" type:"integer"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`

	// Lists events in descending order of their timeStamp.
	ReverseOrder *bool `locationName:"reverseOrder" type:"boolean"`
}

// String returns the string representation
func (s GetExecutionHistoryInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetExecutionHistoryInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *GetExecutionHistoryInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "GetExecutionHistoryInput"}

	if s.ExecutionArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ExecutionArn"))
	}
	if s.ExecutionArn != nil && len(*s.ExecutionArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ExecutionArn", 1))
	}
	if s.NextToken != nil && len(*s.NextToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("NextToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/GetExecutionHistoryOutput
type GetExecutionHistoryOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The list of events that occurred in the execution.
	//
	// Events is a required field
	Events []HistoryEvent `locationName:"events" type:"list" required:"true"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`
}

// String returns the string representation
func (s GetExecutionHistoryOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetExecutionHistoryOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s GetExecutionHistoryOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Contains details about the events of an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/HistoryEvent
type HistoryEvent struct {
	_ struct{} `type:"structure"`

	// Contains details about an activity which failed during an execution.
	ActivityFailedEventDetails *ActivityFailedEventDetails `locationName:"activityFailedEventDetails" type:"structure"`

	// Contains details about an activity schedule event which failed during an
	// execution.
	ActivityScheduleFailedEventDetails *ActivityScheduleFailedEventDetails `locationName:"activityScheduleFailedEventDetails" type:"structure"`

	// Contains details about an activity scheduled during an execution.
	ActivityScheduledEventDetails *ActivityScheduledEventDetails `locationName:"activityScheduledEventDetails" type:"structure"`

	// Contains details about the start of an activity during an execution.
	ActivityStartedEventDetails *ActivityStartedEventDetails `locationName:"activityStartedEventDetails" type:"structure"`

	// Contains details about an activity which successfully terminated during an
	// execution.
	ActivitySucceededEventDetails *ActivitySucceededEventDetails `locationName:"activitySucceededEventDetails" type:"structure"`

	// Contains details about an activity timeout which occurred during an execution.
	ActivityTimedOutEventDetails *ActivityTimedOutEventDetails `locationName:"activityTimedOutEventDetails" type:"structure"`

	// Contains details about an abort of an execution.
	ExecutionAbortedEventDetails *ExecutionAbortedEventDetails `locationName:"executionAbortedEventDetails" type:"structure"`

	// Contains details about an execution failure event.
	ExecutionFailedEventDetails *ExecutionFailedEventDetails `locationName:"executionFailedEventDetails" type:"structure"`

	// Contains details about the start of the execution.
	ExecutionStartedEventDetails *ExecutionStartedEventDetails `locationName:"executionStartedEventDetails" type:"structure"`

	// Contains details about the successful termination of the execution.
	ExecutionSucceededEventDetails *ExecutionSucceededEventDetails `locationName:"executionSucceededEventDetails" type:"structure"`

	// Contains details about the execution timeout which occurred during the execution.
	ExecutionTimedOutEventDetails *ExecutionTimedOutEventDetails `locationName:"executionTimedOutEventDetails" type:"structure"`

	// The id of the event. Events are numbered sequentially, starting at one.
	//
	// Id is a required field
	Id *int64 `locationName:"id" type:"long" required:"true"`

	// Contains details about a lambda function which failed during an execution.
	LambdaFunctionFailedEventDetails *LambdaFunctionFailedEventDetails `locationName:"lambdaFunctionFailedEventDetails" type:"structure"`

	// Contains details about a failed lambda function schedule event which occurred
	// during an execution.
	LambdaFunctionScheduleFailedEventDetails *LambdaFunctionScheduleFailedEventDetails `locationName:"lambdaFunctionScheduleFailedEventDetails" type:"structure"`

	// Contains details about a lambda function scheduled during an execution.
	LambdaFunctionScheduledEventDetails *LambdaFunctionScheduledEventDetails `locationName:"lambdaFunctionScheduledEventDetails" type:"structure"`

	// Contains details about a lambda function which failed to start during an
	// execution.
	LambdaFunctionStartFailedEventDetails *LambdaFunctionStartFailedEventDetails `locationName:"lambdaFunctionStartFailedEventDetails" type:"structure"`

	// Contains details about a lambda function which terminated successfully during
	// an execution.
	LambdaFunctionSucceededEventDetails *LambdaFunctionSucceededEventDetails `locationName:"lambdaFunctionSucceededEventDetails" type:"structure"`

	// Contains details about a lambda function timeout which occurred during an
	// execution.
	LambdaFunctionTimedOutEventDetails *LambdaFunctionTimedOutEventDetails `locationName:"lambdaFunctionTimedOutEventDetails" type:"structure"`

	// The id of the previous event.
	PreviousEventId *int64 `locationName:"previousEventId" type:"long"`

	// Contains details about a state entered during an execution.
	StateEnteredEventDetails *StateEnteredEventDetails `locationName:"stateEnteredEventDetails" type:"structure"`

	// Contains details about an exit from a state during an execution.
	StateExitedEventDetails *StateExitedEventDetails `locationName:"stateExitedEventDetails" type:"structure"`

	// The date the event occurred.
	//
	// Timestamp is a required field
	Timestamp *time.Time `locationName:"timestamp" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The type of the event.
	//
	// Type is a required field
	Type HistoryEventType `locationName:"type" type:"string" required:"true" enum:"true"`
}

// String returns the string representation
func (s HistoryEvent) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s HistoryEvent) GoString() string {
	return s.String()
}

// Contains details about a lambda function which failed during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionFailedEventDetails
type LambdaFunctionFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s LambdaFunctionFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about a failed lambda function schedule event which occurred
// during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionScheduleFailedEventDetails
type LambdaFunctionScheduleFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s LambdaFunctionScheduleFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionScheduleFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about a lambda function scheduled during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionScheduledEventDetails
type LambdaFunctionScheduledEventDetails struct {
	_ struct{} `type:"structure"`

	// The JSON data input to the lambda function.
	Input *string `locationName:"input" type:"string"`

	// The Amazon Resource Name (ARN) of the scheduled lambda function.
	//
	// Resource is a required field
	Resource *string `locationName:"resource" min:"1" type:"string" required:"true"`

	// The maximum allowed duration of the lambda function.
	TimeoutInSeconds *int64 `locationName:"timeoutInSeconds" type:"long"`
}

// String returns the string representation
func (s LambdaFunctionScheduledEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionScheduledEventDetails) GoString() string {
	return s.String()
}

// Contains details about a lambda function which failed to start during an
// execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionStartFailedEventDetails
type LambdaFunctionStartFailedEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s LambdaFunctionStartFailedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionStartFailedEventDetails) GoString() string {
	return s.String()
}

// Contains details about a lambda function which successfully terminated during
// an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionSucceededEventDetails
type LambdaFunctionSucceededEventDetails struct {
	_ struct{} `type:"structure"`

	// The JSON data output by the lambda function.
	Output *string `locationName:"output" type:"string"`
}

// String returns the string representation
func (s LambdaFunctionSucceededEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionSucceededEventDetails) GoString() string {
	return s.String()
}

// Contains details about a lambda function timeout which occurred during an
// execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/LambdaFunctionTimedOutEventDetails
type LambdaFunctionTimedOutEventDetails struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the timeout.
	Cause *string `locationName:"cause" type:"string"`

	// The error code of the failure.
	Error *string `locationName:"error" type:"string"`
}

// String returns the string representation
func (s LambdaFunctionTimedOutEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LambdaFunctionTimedOutEventDetails) GoString() string {
	return s.String()
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListActivitiesInput
type ListActivitiesInput struct {
	_ struct{} `type:"structure"`

	// The maximum number of results that are returned per call. You can use nextToken
	// to obtain further pages of results. The default is 100 and the maximum allowed
	// page size is 100. A value of 0 uses the default.
	//
	// This is only an upper limit. The actual number of results returned per call
	// might be fewer than the specified maximum.
	MaxResults *int64 `locationName:"maxResults" type:"integer"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`
}

// String returns the string representation
func (s ListActivitiesInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListActivitiesInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ListActivitiesInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "ListActivitiesInput"}
	if s.NextToken != nil && len(*s.NextToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("NextToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListActivitiesOutput
type ListActivitiesOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The list of activities.
	//
	// Activities is a required field
	Activities []ActivityListItem `locationName:"activities" type:"list" required:"true"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`
}

// String returns the string representation
func (s ListActivitiesOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListActivitiesOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s ListActivitiesOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListExecutionsInput
type ListExecutionsInput struct {
	_ struct{} `type:"structure"`

	// The maximum number of results that are returned per call. You can use nextToken
	// to obtain further pages of results. The default is 100 and the maximum allowed
	// page size is 100. A value of 0 uses the default.
	//
	// This is only an upper limit. The actual number of results returned per call
	// might be fewer than the specified maximum.
	MaxResults *int64 `locationName:"maxResults" type:"integer"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`

	// The Amazon Resource Name (ARN) of the state machine whose executions is listed.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`

	// If specified, only list the executions whose current execution status matches
	// the given filter.
	StatusFilter ExecutionStatus `locationName:"statusFilter" type:"string" enum:"true"`
}

// String returns the string representation
func (s ListExecutionsInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListExecutionsInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ListExecutionsInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "ListExecutionsInput"}
	if s.NextToken != nil && len(*s.NextToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("NextToken", 1))
	}

	if s.StateMachineArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("StateMachineArn"))
	}
	if s.StateMachineArn != nil && len(*s.StateMachineArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StateMachineArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListExecutionsOutput
type ListExecutionsOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The list of matching executions.
	//
	// Executions is a required field
	Executions []ExecutionListItem `locationName:"executions" type:"list" required:"true"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`
}

// String returns the string representation
func (s ListExecutionsOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListExecutionsOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s ListExecutionsOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListStateMachinesInput
type ListStateMachinesInput struct {
	_ struct{} `type:"structure"`

	// The maximum number of results that are returned per call. You can use nextToken
	// to obtain further pages of results. The default is 100 and the maximum allowed
	// page size is 100. A value of 0 uses the default.
	//
	// This is only an upper limit. The actual number of results returned per call
	// might be fewer than the specified maximum.
	MaxResults *int64 `locationName:"maxResults" type:"integer"`

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`
}

// String returns the string representation
func (s ListStateMachinesInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListStateMachinesInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ListStateMachinesInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "ListStateMachinesInput"}
	if s.NextToken != nil && len(*s.NextToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("NextToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListStateMachinesOutput
type ListStateMachinesOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// If a nextToken is returned by a previous call, there are more results available.
	// To retrieve the next page of results, make the call again using the returned
	// token in nextToken. Keep all other arguments unchanged.
	//
	// The configured maxResults determines how many results can be returned in
	// a single call.
	NextToken *string `locationName:"nextToken" min:"1" type:"string"`

	// StateMachines is a required field
	StateMachines []StateMachineListItem `locationName:"stateMachines" type:"list" required:"true"`
}

// String returns the string representation
func (s ListStateMachinesOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ListStateMachinesOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s ListStateMachinesOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskFailureInput
type SendTaskFailureInput struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the failure.
	Cause *string `locationName:"cause" type:"string"`

	// An arbitrary error code that identifies the cause of the failure.
	Error *string `locationName:"error" type:"string"`

	// The token that represents this task. Task tokens are generated by the service
	// when the tasks are assigned to a worker (see GetActivityTask::taskToken).
	//
	// TaskToken is a required field
	TaskToken *string `locationName:"taskToken" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s SendTaskFailureInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskFailureInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *SendTaskFailureInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "SendTaskFailureInput"}

	if s.TaskToken == nil {
		invalidParams.Add(aws.NewErrParamRequired("TaskToken"))
	}
	if s.TaskToken != nil && len(*s.TaskToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("TaskToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskFailureOutput
type SendTaskFailureOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response
}

// String returns the string representation
func (s SendTaskFailureOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskFailureOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s SendTaskFailureOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskHeartbeatInput
type SendTaskHeartbeatInput struct {
	_ struct{} `type:"structure"`

	// The token that represents this task. Task tokens are generated by the service
	// when the tasks are assigned to a worker (see GetActivityTaskOutput$taskToken).
	//
	// TaskToken is a required field
	TaskToken *string `locationName:"taskToken" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s SendTaskHeartbeatInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskHeartbeatInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *SendTaskHeartbeatInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "SendTaskHeartbeatInput"}

	if s.TaskToken == nil {
		invalidParams.Add(aws.NewErrParamRequired("TaskToken"))
	}
	if s.TaskToken != nil && len(*s.TaskToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("TaskToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskHeartbeatOutput
type SendTaskHeartbeatOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response
}

// String returns the string representation
func (s SendTaskHeartbeatOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskHeartbeatOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s SendTaskHeartbeatOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskSuccessInput
type SendTaskSuccessInput struct {
	_ struct{} `type:"structure"`

	// The JSON output of the task.
	//
	// Output is a required field
	Output *string `locationName:"output" type:"string" required:"true"`

	// The token that represents this task. Task tokens are generated by the service
	// when the tasks are assigned to a worker (see GetActivityTaskOutput$taskToken).
	//
	// TaskToken is a required field
	TaskToken *string `locationName:"taskToken" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s SendTaskSuccessInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskSuccessInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *SendTaskSuccessInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "SendTaskSuccessInput"}

	if s.Output == nil {
		invalidParams.Add(aws.NewErrParamRequired("Output"))
	}

	if s.TaskToken == nil {
		invalidParams.Add(aws.NewErrParamRequired("TaskToken"))
	}
	if s.TaskToken != nil && len(*s.TaskToken) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("TaskToken", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/SendTaskSuccessOutput
type SendTaskSuccessOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response
}

// String returns the string representation
func (s SendTaskSuccessOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SendTaskSuccessOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s SendTaskSuccessOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StartExecutionInput
type StartExecutionInput struct {
	_ struct{} `type:"structure"`

	// The string that contains the JSON input data for the execution, for example:
	//
	// "input": "{\"first_name\" : \"test\"}"
	//
	// If you don't include any JSON input data, you still must include the two
	// braces, for example: "input": "{}"
	Input *string `locationName:"input" type:"string"`

	// The name of the execution. This name must be unique for your AWS account
	// and region for 90 days. For more information, see  Limits Related to State
	// Machine Executions (http://docs.aws.amazon.com/step-functions/latest/dg/limits.html#service-limits-state-machine-executions)
	// in the AWS Step Functions Developer Guide.
	//
	// An execution can't use the name of another execution for 90 days.
	//
	// When you make multiple StartExecution calls with the same name, the new execution
	// doesn't run and the following rules apply:
	//
	// When the original execution is open and the execution input from the new
	// call is different, the ExecutionAlreadyExists message is returned.
	//
	// When the original execution is open and the execution input from the new
	// call is identical, the Success message is returned.
	//
	// When the original execution is closed, the ExecutionAlreadyExists message
	// is returned regardless of input.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	Name *string `locationName:"name" min:"1" type:"string"`

	// The Amazon Resource Name (ARN) of the state machine to execute.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s StartExecutionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StartExecutionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *StartExecutionInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "StartExecutionInput"}
	if s.Name != nil && len(*s.Name) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("Name", 1))
	}

	if s.StateMachineArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("StateMachineArn"))
	}
	if s.StateMachineArn != nil && len(*s.StateMachineArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StateMachineArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StartExecutionOutput
type StartExecutionOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The Amazon Resource Name (ARN) that identifies the execution.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`

	// The date the execution is started.
	//
	// StartDate is a required field
	StartDate *time.Time `locationName:"startDate" type:"timestamp" timestampFormat:"unix" required:"true"`
}

// String returns the string representation
func (s StartExecutionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StartExecutionOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s StartExecutionOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Contains details about a state entered during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StateEnteredEventDetails
type StateEnteredEventDetails struct {
	_ struct{} `type:"structure"`

	// The string that contains the JSON input data for the state.
	Input *string `locationName:"input" type:"string"`

	// The name of the state.
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s StateEnteredEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StateEnteredEventDetails) GoString() string {
	return s.String()
}

// Contains details about an exit from a state during an execution.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StateExitedEventDetails
type StateExitedEventDetails struct {
	_ struct{} `type:"structure"`

	// The name of the state.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The JSON output data of the state.
	Output *string `locationName:"output" type:"string"`
}

// String returns the string representation
func (s StateExitedEventDetails) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StateExitedEventDetails) GoString() string {
	return s.String()
}

// Contains details about the state machine.
// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StateMachineListItem
type StateMachineListItem struct {
	_ struct{} `type:"structure"`

	// The date the state machine is created.
	//
	// CreationDate is a required field
	CreationDate *time.Time `locationName:"creationDate" type:"timestamp" timestampFormat:"unix" required:"true"`

	// The name of the state machine.
	//
	// A name must not contain:
	//
	//    * whitespace
	//
	//    * brackets < > { } [ ]
	//
	//    * wildcard characters ? *
	//
	//    * special characters " # % \ ^ | ~ ` $ & , ; : /
	//
	//    * control characters (U+0000-001F, U+007F-009F)
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// The Amazon Resource Name (ARN) that identifies the state machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s StateMachineListItem) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StateMachineListItem) GoString() string {
	return s.String()
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StopExecutionInput
type StopExecutionInput struct {
	_ struct{} `type:"structure"`

	// A more detailed explanation of the cause of the termination.
	Cause *string `locationName:"cause" type:"string"`

	// An arbitrary error code that identifies the cause of the termination.
	Error *string `locationName:"error" type:"string"`

	// The Amazon Resource Name (ARN) of the execution to stop.
	//
	// ExecutionArn is a required field
	ExecutionArn *string `locationName:"executionArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s StopExecutionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StopExecutionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *StopExecutionInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "StopExecutionInput"}

	if s.ExecutionArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("ExecutionArn"))
	}
	if s.ExecutionArn != nil && len(*s.ExecutionArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("ExecutionArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/StopExecutionOutput
type StopExecutionOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The date the execution is stopped.
	//
	// StopDate is a required field
	StopDate *time.Time `locationName:"stopDate" type:"timestamp" timestampFormat:"unix" required:"true"`
}

// String returns the string representation
func (s StopExecutionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s StopExecutionOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s StopExecutionOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/UpdateStateMachineInput
type UpdateStateMachineInput struct {
	_ struct{} `type:"structure"`

	// The Amazon States Language definition of the state machine.
	Definition *string `locationName:"definition" min:"1" type:"string"`

	// The Amazon Resource Name (ARN) of the IAM role of the state machine.
	RoleArn *string `locationName:"roleArn" min:"1" type:"string"`

	// The Amazon Resource Name (ARN) of the state machine.
	//
	// StateMachineArn is a required field
	StateMachineArn *string `locationName:"stateMachineArn" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s UpdateStateMachineInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s UpdateStateMachineInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *UpdateStateMachineInput) Validate() error {
	invalidParams := aws.ErrInvalidParams{Context: "UpdateStateMachineInput"}
	if s.Definition != nil && len(*s.Definition) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("Definition", 1))
	}
	if s.RoleArn != nil && len(*s.RoleArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("RoleArn", 1))
	}

	if s.StateMachineArn == nil {
		invalidParams.Add(aws.NewErrParamRequired("StateMachineArn"))
	}
	if s.StateMachineArn != nil && len(*s.StateMachineArn) < 1 {
		invalidParams.Add(aws.NewErrParamMinLen("StateMachineArn", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// Please also see https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/UpdateStateMachineOutput
type UpdateStateMachineOutput struct {
	_ struct{} `type:"structure"`

	responseMetadata aws.Response

	// The date and time the state machine was updated.
	//
	// UpdateDate is a required field
	UpdateDate *time.Time `locationName:"updateDate" type:"timestamp" timestampFormat:"unix" required:"true"`
}

// String returns the string representation
func (s UpdateStateMachineOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s UpdateStateMachineOutput) GoString() string {
	return s.String()
}

// SDKResponseMetdata return sthe response metadata for the API.
func (s UpdateStateMachineOutput) SDKResponseMetadata() aws.Response {
	return s.responseMetadata
}

type ExecutionStatus string

// Enum values for ExecutionStatus
const (
	ExecutionStatusRunning   ExecutionStatus = "RUNNING"
	ExecutionStatusSucceeded ExecutionStatus = "SUCCEEDED"
	ExecutionStatusFailed    ExecutionStatus = "FAILED"
	ExecutionStatusTimedOut  ExecutionStatus = "TIMED_OUT"
	ExecutionStatusAborted   ExecutionStatus = "ABORTED"
)

func (enum ExecutionStatus) MarshalValue() (string, error) {
	return string(enum), nil
}

func (enum ExecutionStatus) MarshalValueBuf(b []byte) ([]byte, error) {
	b = b[0:0]
	return append(b, enum...), nil
}

type HistoryEventType string

// Enum values for HistoryEventType
const (
	HistoryEventTypeActivityFailed               HistoryEventType = "ActivityFailed"
	HistoryEventTypeActivityScheduleFailed       HistoryEventType = "ActivityScheduleFailed"
	HistoryEventTypeActivityScheduled            HistoryEventType = "ActivityScheduled"
	HistoryEventTypeActivityStarted              HistoryEventType = "ActivityStarted"
	HistoryEventTypeActivitySucceeded            HistoryEventType = "ActivitySucceeded"
	HistoryEventTypeActivityTimedOut             HistoryEventType = "ActivityTimedOut"
	HistoryEventTypeChoiceStateEntered           HistoryEventType = "ChoiceStateEntered"
	HistoryEventTypeChoiceStateExited            HistoryEventType = "ChoiceStateExited"
	HistoryEventTypeExecutionFailed              HistoryEventType = "ExecutionFailed"
	HistoryEventTypeExecutionStarted             HistoryEventType = "ExecutionStarted"
	HistoryEventTypeExecutionSucceeded           HistoryEventType = "ExecutionSucceeded"
	HistoryEventTypeExecutionAborted             HistoryEventType = "ExecutionAborted"
	HistoryEventTypeExecutionTimedOut            HistoryEventType = "ExecutionTimedOut"
	HistoryEventTypeFailStateEntered             HistoryEventType = "FailStateEntered"
	HistoryEventTypeLambdaFunctionFailed         HistoryEventType = "LambdaFunctionFailed"
	HistoryEventTypeLambdaFunctionScheduleFailed HistoryEventType = "LambdaFunctionScheduleFailed"
	HistoryEventTypeLambdaFunctionScheduled      HistoryEventType = "LambdaFunctionScheduled"
	HistoryEventTypeLambdaFunctionStartFailed    HistoryEventType = "LambdaFunctionStartFailed"
	HistoryEventTypeLambdaFunctionStarted        HistoryEventType = "LambdaFunctionStarted"
	HistoryEventTypeLambdaFunctionSucceeded      HistoryEventType = "LambdaFunctionSucceeded"
	HistoryEventTypeLambdaFunctionTimedOut       HistoryEventType = "LambdaFunctionTimedOut"
	HistoryEventTypeSucceedStateEntered          HistoryEventType = "SucceedStateEntered"
	HistoryEventTypeSucceedStateExited           HistoryEventType = "SucceedStateExited"
	HistoryEventTypeTaskStateAborted             HistoryEventType = "TaskStateAborted"
	HistoryEventTypeTaskStateEntered             HistoryEventType = "TaskStateEntered"
	HistoryEventTypeTaskStateExited              HistoryEventType = "TaskStateExited"
	HistoryEventTypePassStateEntered             HistoryEventType = "PassStateEntered"
	HistoryEventTypePassStateExited              HistoryEventType = "PassStateExited"
	HistoryEventTypeParallelStateAborted         HistoryEventType = "ParallelStateAborted"
	HistoryEventTypeParallelStateEntered         HistoryEventType = "ParallelStateEntered"
	HistoryEventTypeParallelStateExited          HistoryEventType = "ParallelStateExited"
	HistoryEventTypeParallelStateFailed          HistoryEventType = "ParallelStateFailed"
	HistoryEventTypeParallelStateStarted         HistoryEventType = "ParallelStateStarted"
	HistoryEventTypeParallelStateSucceeded       HistoryEventType = "ParallelStateSucceeded"
	HistoryEventTypeWaitStateAborted             HistoryEventType = "WaitStateAborted"
	HistoryEventTypeWaitStateEntered             HistoryEventType = "WaitStateEntered"
	HistoryEventTypeWaitStateExited              HistoryEventType = "WaitStateExited"
)

func (enum HistoryEventType) MarshalValue() (string, error) {
	return string(enum), nil
}

func (enum HistoryEventType) MarshalValueBuf(b []byte) ([]byte, error) {
	b = b[0:0]
	return append(b, enum...), nil
}

type StateMachineStatus string

// Enum values for StateMachineStatus
const (
	StateMachineStatusActive   StateMachineStatus = "ACTIVE"
	StateMachineStatusDeleting StateMachineStatus = "DELETING"
)

func (enum StateMachineStatus) MarshalValue() (string, error) {
	return string(enum), nil
}

func (enum StateMachineStatus) MarshalValueBuf(b []byte) ([]byte, error) {
	b = b[0:0]
	return append(b, enum...), nil
}