/
slave.go
290 lines (239 loc) · 5.75 KB
/
slave.go
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package slave
import (
"crypto/tls"
"encoding/json"
"errors"
"io/ioutil"
"net/http"
"strings"
"time"
"fmt"
"sync"
"github.com/0x6666/backup/log"
"github.com/0x6666/ddns/app/controllers"
"github.com/0x6666/ddns/app/model"
"github.com/0x6666/ddns/app/signature"
"github.com/0x6666/ddns/config"
"github.com/0x6666/ddns/errs"
)
type SlaveServer struct {
db model.IDatabase
sync.RWMutex
updating bool
}
type recode struct {
Id int64 `json:"id"`
Type model.RecodeType `json:"type"`
Name string `json:"name"`
Dynamic bool `json:"dynamic"`
Value string `json:"value"`
Ttl uint32 `json:"ttl"`
Key string `json:"key"`
domian string
userid int64
}
func (ss *SlaveServer) Init(db model.IDatabase) error {
if db == nil {
log.Error(errs.ErrInvalidParam.Error())
return errs.ErrInvalidParam
}
if len(config.Data.Slave.MasterHost) == 0 {
log.Error("master host can't be empty")
return errors.New("master host can't be empty")
}
if len(config.Data.Slave.Accesskey) == 0 || len(config.Data.Slave.SecretKey) == 0 {
log.Error("accesskey & secretKey host can't be empty")
return errors.New("accesskey & secretKey host can't be empty")
}
ss.db = db
ss.updating = false
return nil
}
func (ss *SlaveServer) IsUpdating() bool {
ss.RLock()
defer ss.RUnlock()
return ss.updating
}
func (ss *SlaveServer) setStatus(b bool) {
ss.Lock()
defer ss.Unlock()
ss.updating = b
}
func (ss *SlaveServer) Start() {
ticker := time.NewTicker(time.Second * time.Duration(config.Data.Slave.UpdateTime))
go ss.checkUpdate(true)
go func() {
for {
<-ticker.C
ss.checkUpdate(false)
}
}()
}
func (ss *SlaveServer) checkUpdate(force bool) {
if ss.IsUpdating() {
return
}
ss.setStatus(true)
defer ss.setStatus(false)
v, err := ss.getVersion()
if err != nil {
log.Error(err.Error())
return
}
if v.SchemaVersion != model.CurrentVersion {
log.Error("schema version not match, need update...")
return
}
if !force && v.DataVersion == ss.db.GetVersion() {
log.Debug("the same data version....")
return
}
recodes, err := ss.getRecodes()
if err != nil {
log.Error(err.Error())
return
}
if len(recodes) == 0 {
return
}
db, err := ss.db.BeginTransaction()
if err != nil {
log.Error(err.Error())
return
}
defer func() {
if err == nil {
db.Commit()
} else {
db.Rollback()
}
}()
err = db.ClearRecodes(true)
if err != nil {
log.Error(err.Error())
return
}
for _, r := range recodes {
d, err := db.FindDomainByName(r.domian)
if err != nil {
log.Warn("find domain [%v] failed: %v", r.domian, err)
d = &model.Domain{}
d.Synced = true
d.DomainName = r.domian
id, err := db.NewDomain(r.userid, d)
if err != nil {
log.Error(err.Error())
continue
}
d.UserID = id
}
_r := model.Recode{}
_r.Dynamic = r.Dynamic
_r.RecodeValue = r.Value
_r.RecordHost = r.Name
_r.RecordType = r.Type
_r.TTL = r.Ttl
_r.Synced = true
if len(r.Key) > 0 {
_r.UpdateKey.String = r.Key
_r.UpdateKey.Valid = true
}
if _, err = db.NewRecode(d.ID, &_r); err != nil {
log.Error(err.Error())
return
}
}
//jast ss.db
ss.db.SetVersion(v.DataVersion)
}
func (ss *SlaveServer) getRecodes() ([]recode, error) {
client := &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
DisableKeepAlives: true,
},
}
url := "/api/recodes"
req, err := http.NewRequest("GET", config.Data.Slave.MasterHost+url, strings.NewReader(""))
if err != nil {
log.Error(err.Error())
return nil, err
}
signature.SignRequest(req, url, config.Data.Slave.Accesskey, config.Data.Slave.SecretKey, "application/json")
resp, err := client.Do(req)
if err != nil {
log.Error(err.Error())
return nil, err
}
defer resp.Body.Close()
bodyData, err := ioutil.ReadAll(resp.Body)
var data = struct {
Code string `json:"code"`
Msg string `json:"msg"`
Domains []struct {
ID int64 `json:"id"`
Domain string `json:"domain"`
UserID int64 `json:"userid"`
Recodes []recode `json:"recodes"`
} `json:"domains"`
}{}
err = json.Unmarshal(bodyData, &data)
if err != nil {
log.Error("Unmarshal recodes failed: %v", err)
return nil, err
}
if data.Code != controllers.CodeOK {
err = fmt.Errorf("get recodes failed: %v, msg: %v", data.Code, data.Msg)
log.Error(err.Error())
return nil, err
}
rs := []recode{}
for _, d := range data.Domains {
_rs := []recode{}
for _, r := range d.Recodes {
r.domian = d.Domain
r.userid = d.UserID
_rs = append(_rs, r)
}
rs = append(rs, _rs...)
}
return rs, nil
}
func (ss *SlaveServer) getVersion() (*model.Version, error) {
client := &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
DisableKeepAlives: true,
},
}
url := "/api/dataversion"
req, err := http.NewRequest("GET", config.Data.Slave.MasterHost+url, strings.NewReader(""))
if err != nil {
log.Error(err.Error())
return nil, err
}
signature.SignRequest(req, url, config.Data.Slave.Accesskey, config.Data.Slave.SecretKey, "application/json")
resp, err := client.Do(req)
if err != nil {
log.Error(err.Error())
return nil, err
}
defer resp.Body.Close()
bodyData, err := ioutil.ReadAll(resp.Body)
var version = struct {
Code string `json:"code"`
Msg string `json:"msg"`
Version model.Version `json:"version"`
}{}
err = json.Unmarshal(bodyData, &version)
if err != nil {
log.Error("Unmarshal version failed: %v", err.Error())
return nil, err
}
if version.Code != controllers.CodeOK {
err = fmt.Errorf("get version failed: %v, msg: %v", version.Code, version.Msg)
log.Error(err.Error())
return nil, err
}
return &version.Version, nil
}