Connecting to MatrixOne with Golang

MatrixOne supports Golang application connection, Go-MySQL-Driver is supported. This tutorial will walk you through how to connect MatrixOne with Golang.

Before you start

Make sure you have already installed and launched MatrixOne.

Make sure you have already installed Golang 1.18 and plus.

#To check with Golang installation and its version
go version

Make sure you have already installed MySQL client.

Using Golang to connect to MatrixOne

Go-MySQL-Driver is a MySQL driver for Go's (golang) database/sql package.

Install go-mysql-driver tool. Simple install the package to your $GOPATH with the go tool from shell. Make sure Git is installed on your machine and in your system's PATH.
```
> go get -u github.com/go-sql-driver/mysql
```
Connect to MatrixOne by MySQL client. Create a new database named test.
```
mysql> create database test;
```

Create a plain text file golang_connect_matrixone.go and put the code below.

package main

import (
    "database/sql"
    "fmt"
    _ "github.com/go-sql-driver/mysql"
)

func main() {
    //"username:password@[protocol](address:port)/database"
    db, _ := sql.Open("mysql", "root:111@tcp(127.0.0.1:6001)/test") // Set database connection
    defer db.Close()                                            //Close DB
    err := db.Ping()                                            //Connect to DB
    if err != nil {
        fmt.Println("Database Connection Failed")               //Connection failed
        return
    } else {
        fmt.Println("Database Connection Succeed")              //Connection succeed
    }
}

Execute this golang file in the command line terminal.

> go run golang_connect_matrixone.go
Database Connection Succeed

Using Gorm to connect to MatrixOne

Gorm is the fantastic ORM library for Golang and aims to be developer-friendly. gorm.io/gorm and gorm.io/driver/mysql will make Go connect to MYSQL.

Use command go get to install gorm.io/gorm and gorm.io/driver/mysql.
```
go get -u gorm.io/gorm
go get -u gorm.io/driver/mysql
```
Connect to MatrixOne by MySQL client. Create a new database named test.
```
mysql> create database test;
```

Create a go file golang_gorm_connect_matrixone.go and put the code below.

package main
import (
    "gorm.io/driver/mysql"
    "gorm.io/gorm"
    "fmt"
  )
func getDBConn() *gorm.DB {
    dsn := "root:111@tcp(127.0.0.1:6001)/test?charset=utf8mb4&parseTime=True&loc=Local" //MO 
    db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{ 
    })
    // get connection
    if err != nil {
        fmt.Println("Database Connection Failed") //Connection failed
    } else {
        fmt.Println("Database Connection Succeed") //Connection succeed
    }
    return db
    }
func main() {
    getDBConn()
}

Execute this go file in the command line terminal.

> go run golang_gorm_connect_matrixone.go
Database Connection Succeed

Reference

For the example about using Golang to build a simple CRUD with MatrixOne, see Build a simple Golang CRUD demo with MatrixOne.

For the example about using Gorm to build a simple CRUD with MatrixOne, see Build a simple Gorm CRUD demo with MatrixOne.