Connect FTP NDJSON file and AWS DynamoDB in our serverless environment

class SftpSourceReadRemoteNdjson {
    async init() {
        // TODO: Create your sftp credential
        // More info at https://yepcode.io/docs/integrations/sftp/#credential-configuration
        this.sftp = await yepcode.integration.sftp("your-sftp-credential-name");
    }

    async fetch(publish, done) {
        // TODO: Customize your ndjson file path to download
        const stream = new PassThrough();
        stream
            .pipe(ndjson.parse())
            .on("data", async (line) => {
                await publish(line);
            })
            .on("end", done);

        // TODO: Customize the ndjson file location
        await this.sftp.get("/remoteDirPath/fileName.ndjson", stream);
    }

    async close() {
        await this.sftp.end();
    }
}

class AwsDynamodbTargetPut {
    async init() {
        // TODO: Create your aws-dynamodb credential
        // More info at https://yepcode.io/docs/integrations/aws-dynamodb/#credential-configuration
        this.awsDynamodb = yepcode.integration.awsDynamodb(
            "your-aws-dynamodb-credential-name"
        );
    }

    async consume(item) {
        // TODO: Customize the command to be executed
        // More info at: https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-dynamodb/interfaces/putitemcommandinput.html
        const putItemCommand = new PutItemCommand({
            TableName: "table-name",
            Item: {
                "table-primary-key-name": {
                    S: item.id
                },
                email: {
                    S: item.email
                },
                age: {
                    N: item.age
                },
                // etc
            },
        });

        await this.awsDynamodb.send(putItemCommand);
    }

    async close() {}
}