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INVOKING STATE MACHINE WITH CLOUD_WATCH

1. INTRODUCTION

Using the HelloWorld state machine build previously HelloWorld

2. TRIGGERING THE STATE MACHINE (BY CLOUD_WATCH CONSOLE)

(A) COPY EXECUTION INPUT STRING

Go to Step Functions console
Enter the previous created state machine. In this case, Helloworld
Open Executions tab
Choose an execution. In this case, api_gateway_test_1
Open Input tab
Copy the JSON

{
  "Comment": "Invoked from API Gateway",
  "number": "5"
}

(B) CREATE NEW RULE FOR EXECUTION

Go to CloudWatch console
Go to Rules
Choose Create rule
Under Event Source, enter the following data:

Enable <u>Schedule</u>
<!-- Trigger the event every 5 minutes -->
Fixed rate of => 5 minutes

Choose Add target
Under Targets, select Step Functions state machine
Under State machine, select a state machine to be executed. In this case, Helloworld
Open Configure input tab
Select an option. In this case, Constant (JSON text), and enter the following data:

{ "Comment": "Invoked from CloudWatch", "number": 5 }

Select Create a new role for this specific resource
Choose Configure details
Under Rule definition, enter the following data:

Name => InvokeStateMachineHelloworld
State => Enabled

Choose Create rule

(C) VERIFICATION

Go to Step Functions console
Enter the previous created state machine. In this case, Helloworld
Open Executions tab
Check if there is one more execution, and enter it
Open Input tab
Verify if there is the following data:

{
  "Comment": "Invoked from CloudWatch",
  "number": 5
}

Open Output tab
Verify if there is the following data:

"25"

(D) DELETE THE TRIGGERING CONFIGURATION

Go to CloudWatch console
Go to Rules
Choose an option. In this case, InvokeStateMachineHelloworld
Under Actions, choose an option. In this case, Delete
Choose Delete

3. BIBLIOGRAPHICAL REFERENCES