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env.go
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env.go
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// Copyright 2014 Wandoujia Inc. All Rights Reserved.
// Licensed under the MIT (MIT-LICENSE.txt) license.
package main
import (
"os"
"strings"
"github.com/c4pt0r/cfg"
"github.com/wandoulabs/zkhelper"
"github.com/wandoulabs/codis/pkg/utils/errors"
"github.com/wandoulabs/codis/pkg/utils/log"
)
type Env interface {
ProductName() string
Password() string
DashboardAddr() string
NewZkConn() (zkhelper.Conn, error)
}
type CodisEnv struct {
zkAddr string
passwd string
dashboardAddr string
productName string
provider string
}
func LoadCodisEnv(cfg *cfg.Cfg) Env {
if cfg == nil {
log.Panicf("config is nil")
}
productName, err := cfg.ReadString("product", "test")
if err != nil {
log.PanicErrorf(err, "config: 'product' not found")
}
zkAddr, err := cfg.ReadString("zk", "localhost:2181")
if err != nil {
log.PanicErrorf(err, "config: 'zk' not found")
}
hostname, _ := os.Hostname()
dashboardAddr, err := cfg.ReadString("dashboard_addr", hostname+":18087")
if err != nil {
log.PanicErrorf(err, "config: 'dashboard_addr' not found")
}
provider, err := cfg.ReadString("coordinator", "zookeeper")
if err != nil {
log.PanicErrorf(err, "config: 'coordinator' not found")
}
passwd, _ := cfg.ReadString("password", "")
return &CodisEnv{
zkAddr: zkAddr,
passwd: passwd,
dashboardAddr: dashboardAddr,
productName: productName,
provider: provider,
}
}
func (e *CodisEnv) ProductName() string {
return e.productName
}
func (e *CodisEnv) Password() string {
return e.passwd
}
func (e *CodisEnv) DashboardAddr() string {
return e.dashboardAddr
}
func (e *CodisEnv) NewZkConn() (zkhelper.Conn, error) {
switch e.provider {
case "zookeeper":
return zkhelper.ConnectToZk(e.zkAddr, 30)
case "etcd":
addr := strings.TrimSpace(e.zkAddr)
if !strings.HasPrefix(addr, "http://") {
addr = "http://" + addr
}
return zkhelper.NewEtcdConn(addr, 30)
}
return nil, errors.Errorf("need coordinator in config file, %s", e)
}