gosora/mysql.go

// +build !pgsql, !sqlite, !mssql

/*
*
*	Gosora MySQL Interface
*	Copyright Azareal 2016 - 2019
*
 */
package main

import (
	"log"

	"./common"
	"./query_gen/lib"
	_ "github.com/go-sql-driver/mysql"
)

var dbCollation = "utf8mb4_general_ci"

func init() {
	dbAdapter = "mysql"
	_initDatabase = initMySQL
}

func initMySQL() (err error) {
	err = qgen.Builder.Init("mysql", map[string]string{
		"host":      common.DbConfig.Host,
		"port":      common.DbConfig.Port,
		"name":      common.DbConfig.Dbname,
		"username":  common.DbConfig.Username,
		"password":  common.DbConfig.Password,
		"collation": dbCollation,
	})
	if err != nil {
		return err
	}

	// Set the number of max open connections
	db = qgen.Builder.GetConn()
	db.SetMaxOpenConns(64)
	db.SetMaxIdleConns(32)

	// Only hold connections open for five seconds to avoid accumulating a large number of stale connections
	//db.SetConnMaxLifetime(5 * time.Second)

	// Build the generated prepared statements, we are going to slowly move the queries over to the query generator rather than writing them all by hand, this'll make it easier for us to implement database adapters for other databases like PostgreSQL, MSSQL, SQlite, etc.
	err = _gen_mysql()
	if err != nil {
		return err
	}

	// TODO: Is there a less noisy way of doing this for tests?
	log.Print("Preparing getActivityFeedByWatcher statement.")
	stmts.getActivityFeedByWatcher, err = db.Prepare("SELECT activity_stream_matches.asid, activity_stream.actor, activity_stream.targetUser, activity_stream.event, activity_stream.elementType, activity_stream.elementID FROM `activity_stream_matches` INNER JOIN `activity_stream` ON activity_stream_matches.asid = activity_stream.asid AND activity_stream_matches.watcher != activity_stream.actor WHERE `watcher` = ? ORDER BY activity_stream.asid DESC LIMIT 8")
	if err != nil {
		return err
	}

	log.Print("Preparing getActivityCountByWatcher statement.")
	stmts.getActivityCountByWatcher, err = db.Prepare("SELECT count(*) FROM `activity_stream_matches` INNER JOIN `activity_stream` ON activity_stream_matches.asid = activity_stream.asid AND activity_stream_matches.watcher != activity_stream.actor WHERE `watcher` = ?")
	if err != nil {
		return err
	}

	log.Print("Preparing todaysPostCount statement.")
	stmts.todaysPostCount, err = db.Prepare("select count(*) from replies where createdAt BETWEEN (utc_timestamp() - interval 1 day) and utc_timestamp()")
	if err != nil {
		return err
	}

	log.Print("Preparing todaysTopicCount statement.")
	stmts.todaysTopicCount, err = db.Prepare("select count(*) from topics where createdAt BETWEEN (utc_timestamp() - interval 1 day) and utc_timestamp()")
	if err != nil {
		return err
	}

	log.Print("Preparing todaysTopicCountByForum statement.")
	// TODO: Stop hard-coding this query
	stmts.todaysTopicCountByForum, err = db.Prepare("select count(*) from topics where createdAt BETWEEN (utc_timestamp() - interval 1 day) and utc_timestamp() and parentID = ?")
	if err != nil {
		return err
	}

	log.Print("Preparing todaysNewUserCount statement.")
	stmts.todaysNewUserCount, err = db.Prepare("select count(*) from users where createdAt BETWEEN (utc_timestamp() - interval 1 day) and utc_timestamp()")
	if err != nil {
		return err
	}

	return nil
}