https://speakerdeck.com/track3jyo/pipes-with-you?slide=11

asl-tweet-enrichment.json

{
  "Comment": "A description of my state machine",
  "StartAt": "Map",
  "States": {
    "Map": {
      "Type": "Map",
      "ItemProcessor": {
        "ProcessorConfig": {
          "Mode": "INLINE"
        },
        "StartAt": "Base64デコード& String to Json",
        "States": {
          "Base64デコード& String to Json": {
            "Type": "Pass",
            "Next": "ツイートの感情分析",
            "Parameters": {
              "data.$": "States.StringToJson(States.Base64Decode($.data))"
            }
          },
          "ツイートの感情分析": {
            "Type": "Task",
            "Parameters": {
              "LanguageCode": "ja",
              "Text.$": "$.data.body"
            },
            "Resource": "arn:aws:states:::aws-sdk:comprehend:detectSentiment",
            "ResultSelector": {
              "Sentiment.$": "$.Sentiment"
            },
            "ResultPath": "$.TaskResult",
            "Comment": "感情分析",
            "Next": "ネガティヴツイートの分岐"
          },
          "ネガティヴツイートの分岐": {
            "Type": "Choice",
            "Choices": [
              {
                "Variable": "$.TaskResult.Sentiment",
                "StringEquals": "NEGATIVE",
                "Next": "でもそこが好き...♡"
              }
            ],
            "Default": "そのままツイートしちゃえ！"
          },
          "でもそこが好き...♡": {
            "Type": "Pass",
            "End": true,
            "Parameters": {
              "name.$": "$.data.name",
              "twitter_id.$": "$.data.twitter_id",
              "created_at.$": "$.data.created_at",
              "body.$": "States.Format('{} \n でもそこが好き...♡！', $.data.body)"
            }
          },
          "そのままツイートしちゃえ！": {
            "Type": "Pass",
            "End": true,
            "Parameters": {
              "name.$": "$.data.name",
              "twitter_id.$": "$.data.twitter_id",
              "created_at.$": "$.data.created_at",
              "body.$": "$.data.body"
            }
          }
        }
      },
      "End": true,
      "MaxConcurrency": 5
    }
  }
}