Menggunakan AWS CDK untuk membuat alur kerja Standar di Step Functions

mkdir step && cd step

mkdir step && cd step

mkdir step && cd step

mkdir step && cd step

Pastikan Anda telah menginstal .NET versi 6.0 atau lebih tinggi. Untuk selengkapnya, lihat Versi yang didukung.

mkdir step && cd step

cdk init --language typescript

cdk init --language javascript

cdk init --language python

Setelah proyek diinisialisasi, aktifkan lingkungan virtual proyek dan instal AWS CDKdependensi dasar.

source .venv/bin/activate
python -m pip install -r requirements.txt

cdk init --language java

cdk init --language csharp

Perbarui lib/step-stack.ts dengan kode berikut.

import * as cdk from 'aws-cdk-lib';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as sfn from 'aws-cdk-lib/aws-stepfunctions';
import * as tasks from 'aws-cdk-lib/aws-stepfunctions-tasks';

export class StepStack extends cdk.Stack {
  constructor(app: cdk.App, id: string) {
    super(app, id);

    const helloFunction = new lambda.Function(this, 'MyLambdaFunction', {
      code: lambda.Code.fromInline(`
          exports.handler = (event, context, callback) => {
              callback(null, "Hello World!");
          };
      `),
      runtime: lambda.Runtime.NODEJS_18_X,
      handler: "index.handler",
      timeout: cdk.Duration.seconds(3)
    });

    const stateMachine = new sfn.StateMachine(this, 'MyStateMachine', {
      definition: new tasks.LambdaInvoke(this, "MyLambdaTask", {
        lambdaFunction: helloFunction
      }).next(new sfn.Succeed(this, "GreetedWorld"))
    });
  }
}

Perbarui lib/step-stack.js dengan kode berikut.

import * as cdk from 'aws-cdk-lib';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as sfn from 'aws-cdk-lib/aws-stepfunctions';
import * as tasks from 'aws-cdk-lib/aws-stepfunctions-tasks';

export class StepStack extends cdk.Stack {
  constructor(app, id) {
    super(app, id);

    const helloFunction = new lambda.Function(this, 'MyLambdaFunction', {
      code: lambda.Code.fromInline(`
          exports.handler = (event, context, callback) => {
              callback(null, "Hello World!");
          };
      `),
      runtime: lambda.Runtime.NODEJS_18_X,
      handler: "index.handler",
      timeout: cdk.Duration.seconds(3)
    });

    const stateMachine = new sfn.StateMachine(this, 'MyStateMachine', {
      definition: new tasks.LambdaInvoke(this, "MyLambdaTask", {
        lambdaFunction: helloFunction
      }).next(new sfn.Succeed(this, "GreetedWorld"))
    });
  }
}

Perbarui step/step_stack.py dengan kode berikut.

from aws_cdk import (
    Duration,
    Stack,
    aws_stepfunctions as sfn,
    aws_stepfunctions_tasks as tasks,
    aws_lambda as lambda_
)
class StepStack(Stack):

    def __init__(self, scope: Construct, construct_id: str, **kwargs) -> None:
        super().__init__(scope, construct_id, **kwargs)

        hello_function = lambda_.Function(
            self, "MyLambdaFunction",
            code=lambda_.Code.from_inline("""
            exports.handler = (event, context, callback) => {
                callback(null, "Hello World!");
                }"""),
                runtime=lambda_.Runtime.NODEJS_18_X,
                handler="index.handler",
                timeout=Duration.seconds(25))

        state_machine = sfn.StateMachine(
            self, "MyStateMachine",
            definition=tasks.LambdaInvoke(
            self, "MyLambdaTask",
            lambda_function=hello_function)
            .next(sfn.Succeed(self, "GreetedWorld")))

Perbarui src/main/java/com.myorg/StepStack.java dengan kode berikut.

package com.myorg;

import software.constructs.Construct;
import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.Duration;
import software.amazon.awscdk.services.lambda.Code;
import software.amazon.awscdk.services.lambda.Function;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awscdk.services.stepfunctions.StateMachine;
import software.amazon.awscdk.services.stepfunctions.Succeed;
import software.amazon.awscdk.services.stepfunctions.tasks.LambdaInvoke;

public class StepStack extends Stack {
    public StepStack(final Construct scope, final String id) {
        this(scope, id, null);
    }

    public StepStack(final Construct scope, final String id, final StackProps props) {
        super(scope, id, props);

        final Function helloFunction = Function.Builder.create(this, "MyLambdaFunction")
                .code(Code.fromInline(
                        "exports.handler = (event, context, callback) => { callback(null, 'Hello World!' );}"))
                .runtime(Runtime.NODEJS_18_X)
                .handler("index.handler")
                .timeout(Duration.seconds(25))
                .build();

        final StateMachine stateMachine = StateMachine.Builder.create(this, "MyStateMachine")
                .definition(LambdaInvoke.Builder.create(this, "MyLambdaTask")
                        .lambdaFunction(helloFunction)
                        .build()
                        .next(new Succeed(this, "GreetedWorld")))
                .build();
    }
}

Perbarui src/Step/StepStack.cs dengan kode berikut.

using Amazon.CDK;
using Constructs;
using Amazon.CDK.AWS.Lambda;
using Amazon.CDK.AWS.StepFunctions;
using Amazon.CDK.AWS.StepFunctions.Tasks;

namespace Step
{
    public class StepStack : Stack
    {
        internal StepStack(Construct scope, string id, IStackProps props = null) : base(scope, id, props)
        {
            var helloFunction = new Function(this, "MyLambdaFunction", new FunctionProps
            {
                Code = Code.FromInline(@"exports.handler = (event, context, callback) => {
                    callback(null, 'Hello World!');
                }"),
                Runtime = Runtime.NODEJS_18_X,
                Handler = "index.handler",
                Timeout = Duration.Seconds(25)
            });

            var stateMachine = new StateMachine(this, "MyStateMachine", new StateMachineProps
            {
                DefinitionBody = DefinitionBody.FromChainable(new LambdaInvoke(this, "MyLambdaTask", new LambdaInvokeProps
                {
                    LambdaFunction = helloFunction
                })
                .Next(new Succeed(this, "GreetedWorld")))
            });
        }
    }
}