[Articles] code is a step by step from scratch to build their own framework golang (d)

The article mentioned configuration and log has been initialized, the article goes on to the database and redis initialization is complete.

Initialize the database

Database orm I choose xorm. First, add the corresponding config.go config.json and database configuration.
config.json:

  "db_config": {
    "db_host": "127.0.0.1",
    "db_port": "3306",
    "db_user": "root",
    "db_password": "123456",
    "db_name": "test"
  }

config.go

type DBConfig struct {
    DbHost     string `json:"db_host"`
    DbPort     string `json:"db_port"`
    DbUser     string `json:"db_user"`
    DbPassword string `json:"db_password"`
    DbName     string `json:"db_name"`
}

Next, initialize the database:

package db

import (
    "github.com/TomatoMr/awesomeframework/config"
    _ "github.com/go-sql-driver/mysql"
    "github.com/go-xorm/xorm"
    "github.com/pkg/errors"
)

var engine *xorm.Engine

func InitEngine() error {
    var err error
    conf := config.GetConfig()
    engine, err = xorm.NewEngine("mysql", conf.DBConfig.DbUser+
        ":"+conf.DBConfig.DbPassword+"@tcp("+conf.DBConfig.DbHost+":"+conf.DBConfig.DbPort+")/"+conf.DBConfig.DbName+"?charset=utf8")
    if err != nil {
        err = errors.Wrap(err, "InitEngine1")
        return err
    }
    err = engine.Ping()
    if err != nil {
        err = errors.Wrap(err, "InitEngine2")
        return err
    }
    return nil
}

func GetEngine() *xorm.Engine {
    return engine
}

We then create a sql, and so will test the connection with:

DROP DATABASE IF EXISTS `test`;
CREATE DATABASE `test`;
USE `test`;
DROP TABLE IF EXISTS `users`;
CREATE TABLE `users`
(
    `id`   int(11)     NOT NULL AUTO_INCREMENT COMMENT 'id',
    `name` varchar(40) NOT NULL COMMENT '名字',
    `age`  int         NOT NULL DEFAULT 0 COMMENT '年龄',
    PRIMARY KEY (`id`)
) ENGINE = InnoDB COMMENT 'users';

Initialization redis

Also to add configuration:
config.json:

"redis_config": {
    "addr": "127.0.0.1:6379",
    "password": "",
    "db": 0
  }

config.go:

type RedisConfig struct {
    Addr     string `json:"addr"`
    Password string `json:"password"`
    DB       int    `json:"db"`
}

Initialization redis:

func InitRedis() error {
    conf := config.GetConfig()
    client = redis.NewClient(&redis.Options{
        Addr:     conf.RedisConfig.Addr,
        Password: conf.RedisConfig.Password,
        DB:       conf.RedisConfig.DB,
    })

    pong, err := client.Ping().Result()
    if err != nil {
        err = errors.Wrap(err, "InitRedis")
        return err
    }
    logger.GetLogger().Info("Redis ping:", zap.String("ping", pong))
    return nil
}

Adjustment entry file

err = db.InitEngine()
    if err != nil {
        fmt.Printf("Init DB failed. Error is %v", err)
        os.Exit(1)
    }

    err = redis.InitRedis()
    if err != nil {
        fmt.Printf("Init Redis failed. Error is %v", err)
        os.Exit(1)
    }

have a test

Using the above sql, create a database named test, and then build redis, and then we test:

Compile:

go build

run:

awesomeframework --config=./config/config.json

Look Log Print:

2020-01-20T20:09:26.798+0800    info    Redis ping: {"ping": "PONG"}
2020-01-20T20:09:26.798+0800    info    Init success.

summary

This article was written and redis database initialization, and canhttps://github.com/TomatoMr/awesomeframework find today's code. To be continued ......

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