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Welcome to the AWS Code Examples Repository. This repo contains code examples used in the AWS documentation, AWS SDK Developer Guides, and more. For more information, see the Readme.md file below.

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# Step Functions code examples for the SDK for Python
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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## Overview
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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Shows how to use the AWS SDK for Python (Boto3) to work with AWS Step Functions.
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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*Step Functions makes it easy to coordinate the components of distributed applications as a series of steps in a visual workflow.*
## ⚠ Important
* Running this code might result in charges to your AWS account.
* Running the tests might result in charges to your AWS account.
* We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see [Grant least privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege).
* This code is not tested in every AWS Region. For more information, see [AWS Regional Services](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services).
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AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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Python Step Functions SOS data, snippet tags, and README update.
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## Code examples
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### Prerequisites
For prerequisites, see the [README](../../README.md#Prerequisites) in the `python` folder.
Install the packages required by these examples by running the following in a virtual environment:
```
python -m pip install -r requirements.txt
```
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### Get started
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* [Hello Step Functions](hello.py#L4) (`ListStateMachines`)
### Single actions
Code excerpts that show you how to call individual service functions.
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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* [Create a state machine](state_machines.py#L28) (`CreateStateMachine`)
* [Create an activity](activities.py#L31) (`CreateActivity`)
* [Delete a state machine](state_machines.py#L138) (`DeleteStateMachine`)
* [Delete an activity](activities.py#L118) (`DeleteActivity`)
* [Describe a state machine](state_machines.py#L75) (`DescribeStateMachine`)
* [Describe a state machine run](state_machines.py#L118) (`DescribeExecution`)
* [Get task data for an activity](activities.py#L73) (`GetActivityTask`)
* [List activities](activities.py#L51) (`ListActivities`)
* [List state machines](state_machines.py#L53) (`ListStateMachines`)
* [Send a success response to a task](activities.py#L95) (`SendTaskSuccess`)
* [Start a state machine run](state_machines.py#L95) (`StartExecution`)
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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### Scenarios
Code examples that show you how to accomplish a specific task by calling multiple
functions within the same service.
* [Get started with state machines](get_started_state_machines.py)
### Cross-service examples
Sample applications that work across multiple AWS services.
* [Create a messenger application](../../cross_service/stepfunctions_messenger)
## Run the examples
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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### Instructions
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AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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#### Hello Step Functions
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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This example shows you how to get started using Step Functions.
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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```
python hello.py
```
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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Python Step Functions scenario, actions, and hello (#4425) * Python Step Functions scenario, actions, and hello. * Renamed folder sfn -> stepfunctions because it's more readable. * Inocporate edits.
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#### Get started with state machines
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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This example shows you how to do the following:
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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* Create an activity.
* Create a state machine from an Amazon States Language definition that contains the previously created activity as a step.
* Run the state machine and respond to the activity with user input.
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* Get the final status and output after the run completes, then clean up resources.
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
2021-01-15 17:18:54 -08:00
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Start the example by running the following at a command prompt:
```
python get_started_state_machines.py
AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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```
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AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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### Tests
⚠ Running tests might result in charges to your AWS account.
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To find instructions for running these tests, see the [README](../../README.md#Tests)
in the `python` folder.
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## Additional resources
* [Step Functions Developer Guide](https://docs.aws.amazon.com/step-functions/latest/dg/welcome.html)
* [Step Functions API Reference](https://docs.aws.amazon.com/step-functions/latest/apireference/Welcome.html)
* [SDK for Python Step Functions reference](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/stepfunctions.html)
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AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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---
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AWS Step Functions state machine example Create and run a state machine that combines Amazon DynamoDB, AWS Lambda, and Amazon SQS to get items from DynamoDB and send them to Amazon SQS.
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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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