harbor/dao/base.go

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/*
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Copyright (c) 2016 VMware, Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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*/
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package dao
import (
"net"
"os"
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"sync"
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"time"
"github.com/astaxie/beego/orm"
_ "github.com/go-sql-driver/mysql" //register mysql driver
"github.com/vmware/harbor/utils/log"
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)
// NonExistUserID : if a user does not exist, the ID of the user will be 0.
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const NonExistUserID = 0
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// GenerateRandomString generates a random string
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func GenerateRandomString() (string, error) {
o := orm.NewOrm()
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var uuid string
err := o.Raw(`select uuid() as uuid`).QueryRow(&uuid)
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if err != nil {
return "", err
}
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return uuid, nil
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}
//InitDB initializes the database
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func InitDB() {
// orm.Debug = true
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orm.RegisterDriver("mysql", orm.DRMySQL)
addr := os.Getenv("MYSQL_HOST")
port := os.Getenv("MYSQL_PORT")
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username := os.Getenv("MYSQL_USR")
password := os.Getenv("MYSQL_PWD")
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log.Debugf("db url: %s:%s, db user: %s", addr, port, username)
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dbStr := username + ":" + password + "@tcp(" + addr + ":" + port + ")/registry"
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ch := make(chan int, 1)
go func() {
var err error
var c net.Conn
for {
c, err = net.DialTimeout("tcp", addr+":"+port, 20*time.Second)
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if err == nil {
c.Close()
ch <- 1
} else {
log.Errorf("failed to connect to db, retry after 2 seconds :%v", err)
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time.Sleep(2 * time.Second)
}
}
}()
select {
case <-ch:
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case <-time.After(60 * time.Second):
panic("Failed to connect to DB after 60 seconds")
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}
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err := orm.RegisterDataBase("default", "mysql", dbStr)
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if err != nil {
panic(err)
}
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}
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var globalOrm orm.Ormer
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var once sync.Once
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// GetOrmer :set ormer singleton
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func GetOrmer() orm.Ormer {
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once.Do(func() {
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globalOrm = orm.NewOrm()
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})
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return globalOrm
}