Connect Keycloak users and Google Storage NDJSON file in our serverless environment

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

    async fetch(publish, done) {
        // TODO: Customize your find users payload
        // See possible options at: https://www.keycloak.org/docs-api/18.0/rest-api/#_users_resource
        const users = await this.keycloakClient.users.find({
            email: "yep",
            exact: false, // An example to search users with email containing "yep"
            max: 100,
        });

        // Each user is an object with content following the structure you can find at: 
        // https://www.keycloak.org/docs-api/18.0/rest-api/#_userrepresentation
        for (const user of users) {
            await publish(user);
        }
        done();
    }

    async close() {}
}

class GoogleStorageTargetUploadNdjson {
    async init() {
        // TODO: Create your google-storage credential
        // More info at https://yepcode.io/docs/integrations/google-storage/#credential-configuration
        const googleStorage = yepcode.integration.googleStorage(
            "your-google-storage-credential-name"
        );
        // TODO: Customize your bucket name
        const bucket = googleStorage.bucket("your-bucket-name");
        // TODO: choose a destination file
        const blob = bucket.file(`one-folder/my-filename-${Date.now()}.ndjson`);
        const ws = blob.createWriteStream({
            metadata: {
                contentType: "text/ndjson",
            },
        });

        // Transforms the items into a ndjson format
        this.stringifier = ndjson.stringify();
        this.stringifier.pipe(ws);
    }

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

    async close() {
        this.stringifier.end();
    }
}