exports.up = function (knex) {
    // Add new column heartbeat.retries
    return knex.schema
        .alterTable("heartbeat", function (table) {
            table.integer("retries").notNullable().defaultTo(0);
        });

};

exports.down = function (knex) {
    return knex.schema
        .alterTable("heartbeat", function (table) {
            table.dropColumn("retries");
        });
};