initMySQLPool

package com.be.edge.asset.source;

import io.vertx.core.AbstractVerticle;
import io.vertx.core.Promise;
import io.vertx.core.json.JsonObject;
import io.vertx.mysqlclient.MySQLConnectOptions;
import io.vertx.mysqlclient.MySQLPool;
import io.vertx.sqlclient.PoolOptions;
import io.vertx.sqlclient.Row;
import io.vertx.sqlclient.RowSet;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class MySQLVerticle extends AbstractVerticle {
    private MySQLPool client;

    @Override
    public void start(Promise<Void> startPromise) throws Exception {
        initMySQLPool();
        /*
        client.query("SELECT * FROM data_list WHERE id = 1")
            .execute(ar -> {
                if (ar.succeeded()) {
                    RowSet<Row> result = ar.result();
                    log.info("Got {} rows {}", result.size(), result);
                } else {
                    log.info("Failure {}", ar.cause().getMessage());
                }
                client.close();
            });
        */

        client.getConnection().compose(conn -> {
            // All operations execute on the same connection
            return conn
                .query("SELECT * FROM data_list WHERE id = 1")
                .execute()
                .compose(res -> conn
                    .query("SELECT * FROM data_list WHERE id = 2")
                    .execute())
                .onComplete(ar -> {
                    // Release the connection to the pool
                    conn.close();
                });
        }).onComplete(ar -> {
            if (ar.succeeded()) {
                RowSet<Row> result = ar.result();
                log.info("Got {} rows {}", result.rowCount(), result);
                for (Row row : result) {
                    log.info("data {} {}", row.getInteger(0), row.getString(1));
                }
            } else {
                System.out.println("Something went wrong " + ar.cause().getMessage());
            }
        });
    }

    private void initMySQLPool() {
        JsonObject config = config();
        MySQLConnectOptions connectOptions = new MySQLConnectOptions(config.getJsonObject("connect"));
        PoolOptions poolOptions = new PoolOptions(config.getJsonObject("pool"));
        client = MySQLPool.pool(vertx, connectOptions, poolOptions);
    }
}