Connect REST API and FTP NDJSON file in our serverless environment

class HttpSourceRestJsonGet {
    async init() {
        // TODO: Create your http credential with endpoint information:
        // More info at https://yepcode.io/docs/integrations/http/#credential-configuration
        // It may manage headers or authentication
        this.httpClient = yepcode.integration.http("your-http-credential-name");
    }

    async fetch(publish, done) {
        // TODO: Customize the path to the API call
        await this.httpClient
            .get("/the-get-rest-api-path", {
                params: {
                    // TODO: Provide optional HTTP parameters
                },
            })
            .then(async ({
                data
            }) => {
                // Publish each JSON object in array
                for (const item of data) {
                    await publish(item);
                }
            });
        done();
    }

    async close() {}
}

class SftpTargetUploadNdjson {
    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");

        // Transforms the items into a ndjson format
        this.stringifier = ndjson.stringify();
        // TODO: Customize the remote directory where to load the ndjson file
        this.upload = this.sftp.put(
            this.stringifier,
            "/remoteDirPath/fileName.ndjson"
        );
    }

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

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