Challenge - Enhance The Calculator Service
Challenge - Enhance The Calculator Service
In this Challenge, you are tasked with extending the implementation you just deployed, to allow it to handle division, subtraction, multiplication as well as addition which is already implemented. This will require you to:
- Update the state machine definition to define the new operators’ workflow
- Update the source code to implement the new operators
- Update the CloudFormation template.yml to add in the state machine changes and wire-up the Lambda function as a Task for each of the new states.
- Download file CalculatorStepFull.zip to the Windows virtual machine and extract
- In the Eclipse IDE, click menu File
- Click Import…
- Click Maven
- Select Existing Maven projects
- Click Next
- Click Browse…
- Select the directory of CalculatorStepFull project we extract in the step 1
- Click Finish
- In the Eclipse IDE, right-click on the root element of the calculator_full project
- Click Run As
- Click JUnit Test
- We will receive the following result
- Open Command Prompt and navigate to the directory of CalculatorStepFull project we extracted in the step 1
- Execute the command
mvn packageto build
- When the target JAR is built, whick is in the folder target of the project and whose name is calculator_full-1.0.0.jar
- Go to AWS Lambda console.
- Click Functions.
- Type
idevelop_basic_calculatorto the search bar, press Enter - Click idevelop_basic_calculator.
- In the Code soure section
- Click Upload from
- Click .zip or .jar file
- Click Upload
- Select file calculator_full-1.0.0.jar was built in the step 7
- Click Save
- CLick tab Test
- In the Event JSON section, type
{
"operator" : "subtract",
"operands" : [
1,
2
]
}
- Click Test
- Click Details to see the result
- We will receive the following result
- Check with multiply operator
- In the Event JSON section, type
{
"operator" : "multiply",
"operands" : [
1,
2
]
}
- Click Test
- We will receive the following result
