Connect Oracle and PostgreSQL in our serverless environment

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

    async fetch(publish, done) {
        const stream = this.connection
            // TODO: Customize your sql query
            .queryStream(`SELECT * FROM your_table_name`);
        stream.on("data", async (row) => {
            // TODO: map your row to an item
            const item = {
                ...row
            };

            await publish(item);
        });
        stream.on("error", (error) => {
            throw error;
        });
        stream.on("end", () => stream.destroy());
        stream.on("close", done);
    }

    async close() {
        await this.connection.close();
    }
}

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

    async consume(item) {
        // TODO: Customize the SQL INSERT statement and map your item to row
        await this.postgresPool.query(
            "INSERT INTO yourTable(id, name) VALUES($1, $2)",
            [item.id, item.name]
        );
    }

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