Connect Shopify inventory levels and Amazon S3 NDJSON file in our serverless environment

class HttpSourceShopifyGetInventoryLevels {
    async init() {
        // TODO: Create your http credential with Shopify information:
        // More info at https://yepcode.io/docs/integrations/http/#credential-configuration
        // baseUrl: https://your-development-store.myshopify.com/admin/api/2022-04
        // HTTP Headers: { "X-Shopify-Access-Token": <your-access-token> }
        this.httpClient = yepcode.integration.http(
            "your-http-shopify-credential-name"
        );
    }

    async fetch(publish, done) {
        // TODO: Customize your request checking the API documentation:
        // https://shopify.dev/api/admin-rest/2022-04/resources/inventorylevel#get-inventory-levels
        const {
            data: {
                inventory_levels
            },
        } = await this.httpClient.get(
            "inventory_levels.json?inventory_item_ids=some-id%2Cother-id&location_ids=some-id%2Cother-id"
        );

        for (const inventoryLevel of inventory_levels) {
            await publish(inventoryLevel);
        }
        done();
    }

    async close() {}
}

class AwsS3TargetUploadNdjson {
    async init() {
        // TODO: Create your aws-s3 credential
        // More info at https://yepcode.io/docs/integrations/aws-s3/#credential-configuration
        const awsS3 = yepcode.integration.awsS3("your-aws-s3-credential-name");
        // Transforms the items into a ndjson format
        this.stringifier = ndjson.stringify();
        const targetStream = new PassThrough();
        this.stringifier.pipe(targetStream);
        // TODO: customize the Upload content
        // More info at: https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/interfaces/_aws_sdk_lib_storage.options-1.html
        const upload = new Upload({
            client: awsS3,
            params: {
                Bucket: "your-bucket-name",
                Key: "your-file-name.ndjson",
                Body: targetStream,
            },
        });
        upload.on("httpUploadProgress", (progress) => {
            console.log(`Upload progress`, progress);
        });
        this.uploadPromise = upload.done();
    }

    async consume(item) {
        this.stringifier.write(item);
    }

    async close() {
        try {
            this.stringifier.end();
        } catch (error) {
            console.error(`Error ending stringifier`, error);
        }
        try {
            await this.uploadPromise;
        } catch (error) {
            console.error(`Error ending upload`, error);
        }
    }
}