C# (CSharp) Amazon.SimpleWorkflow Namespace

The Amazon Simple Workflow Service API Reference is intended for programmers who need detailed information about the Amazon SWF actions and data types.

For an broader overview of the Amazon SWF programming model, please go to the Amazon SWF Developer Guide .

This section provides an overview of Amazon SWF actions.

Action Categories

The Amazon SWF actions can be grouped into the following major categories.

• Actions related to Activities

• Actions related to Deciders

• Actions related to Workflow Executions

• Actions related to Administration

• Actions related to Visibility

Actions related to Activities

The following are actions that are performed by activity workers:

• PollForActivityTask

• RespondActivityTaskCompleted

• RespondActivityTaskFailed

• RespondActivityTaskCanceled

• RecordActivityTaskHeartbeat

Activity workers use the PollForActivityTask to get new activity tasks. After a worker receives an activity task from Amazon SWF, it performs the task and responds using RespondActivityTaskCompleted if successful or RespondActivityTaskFailed if unsuccessful.

Actions related to Deciders

The following are actions that are performed by deciders:

• PollForDecisionTask

• RespondDecisionTaskCompleted

Deciders use PollForDecisionTask to get decision tasks. After a decider receives a decision task from Amazon SWF, it examines its workflow execution history and decides what to do next. It calls RespondDecisionTaskCompleted to complete the decision task and provide zero or more next decisions.

Actions related to Workflow Executions

The following actions operate on a workflow execution:

• RequestCancelWorkflowExecution

• StartWorkflowExecution

• SignalWorkflowExecution

• TerminateWorkflowExecution

Actions related to Administration

Although you can perform administrative tasks from the Amazon SWF console, you can use the actions in this section to automate functions or build your own administrative tools.

Activity Management

• RegisterActivityType

• DeprecateActivityType

Workflow Management

• RegisterWorkflowType

• DeprecateWorkflowType

Domain Management

• RegisterDomain

• DeprecateDomain

Workflow Execution Management

• RequestCancelWorkflowExecution

• TerminateWorkflowExecution

Visibility Actions

Although you can perform visibility actions from the Amazon SWF console, you can use the actions in this section to build your own console or administrative tools.

Activity Visibility

• ListActivityTypes

• DescribeActivity

Workflow Visibility

• ListWorkflowTypes

• DescribeWorkflowType

Workflow Execution Visibility

• DescribeWorkflowExecution

• ListOpenWorkflowExecutions

• ListClosedWorkflowExecutions

• CountOpenWorkflowExecutions

• CountClosedWorkflowExecutions

• GetWorkflowExecutionHistory

Domain Visibility

• ListDomains

• DescribeDomain

Task List Visibility

• CountPendingActivityTasks

• CountPendingDecisionTasks