Step Functions Configuration

This module configures AWS Step Functions for workflow orchestration.

Overview

Step Functions provides:

• Visual workflow designer
• Error handling and retries
• Parallel and sequential execution
• State management

Workflow Definition

The state machine includes:

1. HelloWorld - Invokes hello-world Lambda
2. ApiHandler - Invokes api-handler Lambda
3. ErrorHandler - Handles errors

Usage

Start Execution

# Get state machine ARN
STATE_MACHINE_ARN=$(terraform output -raw step_functions_arn)

# Start execution
aws stepfunctions start-execution \
  --state-machine-arn $STATE_MACHINE_ARN \
  --input '{"key": "value"}'

View Execution

# List executions
aws stepfunctions list-executions \
  --state-machine-arn $STATE_MACHINE_ARN

# Get execution details
aws stepfunctions describe-execution \
  --execution-arn <execution-arn>

Monitoring

View Step Functions logs:

aws logs tail /aws/vendedlogs/states/devops-studio-dev-workflow --follow

Best Practices

1. Error Handling - Use Retry and Catch blocks
2. Idempotency - Make steps safely retryable
3. Timeouts - Set appropriate timeouts
4. Logging - Enable execution logging
5. Visual Design - Use AWS Console for visual design