From 790130e3b01a9daa0ba10fe1510410bf4139347a Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期六, 28 九月 2019 10:51:29 +0800
Subject: [PATCH] 修改重连后收到历史数据，导致数据重复bug的处理
---
agent.go | 480 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 459 insertions(+), 21 deletions(-)
diff --git a/agent.go b/agent.go
index f1b2e28..0a2a2ff 100644
--- a/agent.go
+++ b/agent.go
@@ -14,16 +14,35 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package serf
+package syncdb
import (
"context"
+ "encoding/json"
"errors"
+ "fmt"
+ "github.com/hashicorp/memberlist"
+ "io/ioutil"
+ "net"
+ "os"
+ "strconv"
+ "sync"
+
+ //"os"
+ "strings"
"time"
- "github.com/apache/servicecomb-service-center/pkg/log"
"github.com/hashicorp/serf/cmd/serf/command/agent"
"github.com/hashicorp/serf/serf"
+ //"github.com/apache/servicecomb-service-center/pkg/log"
+ "basic.com/valib/logger.git"
+)
+
+const (
+ QueryEventGetDB = "GetDatabase"
+ QueryEventUpdateDBData = "UpdateDBData"
+ UserEventSyncSql = "SyncSql"
+ UserEventSyncDbTablePersonCache = "SyncCache"
)
// Agent warps the serf agent
@@ -32,6 +51,13 @@
conf *Config
readyCh chan struct{}
errorCh chan error
+}
+
+type NodeInfo struct {
+ ClusterID string `json:"clusterID"`
+ NodeID string `json:"nodeID"`
+ NodeAddress string `json:"nodeAddress"`
+ IsAlive int `json:"isAlive"`
}
// Create create serf agent with config
@@ -43,10 +69,21 @@
}
// create serf agent with serf config
+ logger.Info("conf.Config.EncryptKey:", conf.EncryptKey)
serfAgent, err := agent.Create(conf.Config, serfConf, nil)
if err != nil {
return nil, err
}
+ // Create the keyring
+ keyring, err := memberlist.NewKeyring(nil, []byte(conf.EncryptKey))
+ if err != nil {
+ logger.Error("Failed to restore keyring: %s", err)
+ return nil, err
+ }
+ serfConf.MemberlistConfig.Keyring = keyring
+ logger.Info("[INFO] agent: Restored keyring with %d keys from %s",
+ len(conf.EncryptKey), conf.EncryptKey)
+
return &Agent{
Agent: serfAgent,
conf: conf,
@@ -59,7 +96,7 @@
func (a *Agent) Start(ctx context.Context) {
err := a.Agent.Start()
if err != nil {
- log.Errorf(err, "start serf agent failed")
+ logger.Error(err, "start serf agent failed")
a.errorCh <- err
return
}
@@ -67,29 +104,177 @@
err = a.retryJoin(ctx)
if err != nil {
- log.Errorf(err, "start serf agent failed")
+ logger.Error(err, "start serf agent failed")
if err != ctx.Err() && a.errorCh != nil {
a.errorCh <- err
}
}
+
+ go a.BroadcastMemberlist(BroadcastInterval * time.Second)
}
+
+var SyncDbTablePersonCacheChan = make(chan []byte,0)
// HandleEvent Handles serf.EventMemberJoin events,
// which will wait for members to join until the number of group members is equal to "groupExpect"
// when the startup mode is "ModeCluster",
// used for logical grouping of serf nodes
func (a *Agent) HandleEvent(event serf.Event) {
- if event.EventType() != serf.EventMemberJoin {
- return
- }
- if a.conf.Mode == ModeCluster {
- if len(a.GroupMembers(a.conf.ClusterName)) < groupExpect {
+ switch ev := event.(type) {
+ case serf.UserEvent:
+ if ev.Name == UserEventSyncSql {
+ var sqlUe SqlUserEvent
+ err := json.Unmarshal(ev.Payload, &sqlUe)
+ if err !=nil {
+ logger.Error("sqlUe unmarshal err:",err)
+ return
+ }
+ if sqlUe.Owner != a.conf.NodeName {
+
+ evTime := uint64(ev.LTime)
+ logger.Info("ev.LTime:",evTime,",SqlUserEvent.sql:",sqlUe.Sql)
+
+ flag, _ := ExecuteSqlByGorm(sqlUe.Sql)
+ logger.Info("userEvent exec ",sqlUe.Sql,",Result:",flag)
+ }
+ } else if ev.Name == UserEventSyncDbTablePersonCache {
+ logger.Info("LTime:",ev.LTime,",ev.Payload.len:",len(ev.Payload))
+ SyncDbTablePersonCacheChan <- ev.Payload
+ }
+
+
+ case *serf.Query:
+
+ if ev.Name == QueryEventGetDB {
+ //bak file and send resp
+ filename, err := BakDbFile()
+ if err != nil {
+ logger.Error("bak db file error!")
+ return
+ }
+ logger.Info(filename)
+
+ filebuf, err := ioutil.ReadFile(filename)
+ logger.Info("filebuf: ", len(filebuf))
+ if err != nil {
+ logger.Error("file to []bytes error: %s\n", err)
+ return
+ }
+
+ err = os.Remove(filename)
+ if err != nil {
+ logger.Error("remove file%s\n failed", filename)
+ return
+ }
+
+ logger.Info("query payload: ", len(ev.Payload))
+ if query, ok := event.(*serf.Query); ok {
+ if err := query.Respond(filebuf); err != nil {
+ logger.Error("err: %s\n", err)
+ return
+ }
+ }
+ } else if ev.Name == QueryEventUpdateDBData {
+ //logger.Info(string(ev.Payload))
+ //var tmpstringslice []string
+ //tmpstringslice = append(tmpstringslice, string(ev.Payload))
+ //logger.Info(tmpstringslice)
+ //rows, err := ExecuteQuerySql(tmpstringslice)
+ //if err != nil {
+ // logger.Error("err: ", err)
+ // return
+ //}
+ //var rowsReturn []Rows
+ //for _, r := range rows {
+ // rowsReturn = append(rowsReturn, *r)
+ //}
+ var tableNames []string
+ err := json.Unmarshal(ev.Payload, &tableNames)
+ if err !=nil {
+ logger.Error("Query tableNames unmarshal err")
+ return
+ }
+ logger.Info("Query tableNames:",tableNames)
+ datas, err := ExecuteQueryByGorm(tableNames)
+ if err !=nil {
+ logger.Error("queryByGorm err")
+ return
+ }
+ bytesReturn, err := json.Marshal(datas)
+ logger.Info("results.len: ", len(bytesReturn))
+ if query, ok := event.(*serf.Query); ok {
+ if err := query.Respond(bytesReturn); err != nil {
+ logger.Error("err: %s\n", err)
+ return
+ }
+ }
+
+ //var res []*Rows
+ //json.Unmarshal(bytesReturn, &res)
+ }
+ case serf.MemberEvent:
+ if event.EventType() == serf.EventMemberLeave {
+ if ev.Members !=nil && len(ev.Members) ==1 {
+ leaveMember := ev.Members[0]
+ leaveSql := "delete from cluster_node where node_id='"+leaveMember.Name+"'"
+ ExecuteSqlByGorm([]string{ leaveSql })
+
+ logger.Info("EventMemberLeave,current Members:",ev.Members)
+ }
return
}
+
+
+ default:
+ logger.Warn("Unknown event type: %s\n", ev.EventType().String())
}
- a.DeregisterEventHandler(a)
- close(a.readyCh)
+
+ //if event.EventType() != serf.EventMemberJoin {
+ // logger.Info("event.EventType() != serf.EventMemberJoin")
+ // return
+ //}
+ //
+ //if a.conf.Mode == ModeCluster {
+ // if len(a.GroupMembers(a.conf.ClusterID)) < groupExpect {
+ // logger.Error("len(a.GroupMembers(a.conf.ClusterID)) < groupExpect")
+ // return
+ // }
+ //}
+ //a.DeregisterEventHandler(a)
+ //close(a.readyCh)
+}
+
+func (a *Agent) BroadcastMemberlist(delay time.Duration) {
+ //serf := a.serf
+ serf := a.Agent.Serf()
+ mb := serf.LocalMember()
+ mblist := serf.Memberlist()
+ logger.Info("mb:", mb)
+
+ // copy local node
+ localNode := *mblist.LocalNode()
+ nodeID := a.conf.NodeName
+ nodeAddress := localNode.Address()
+ clusterID := mb.Tags[tagKeyClusterID]
+ isAlive := int(mb.Status)
+
+ message, _ := json.Marshal(NodeInfo{
+ clusterID,
+ nodeID,
+ nodeAddress,
+ isAlive,
+ })
+
+ // replace node address
+ localNode.Addr = net.ParseIP(BroadcastIP)
+ //localNode.Addr = net.IPv4(255,255,255,255)
+ localNode.Port = BroadcastPort
+ for {
+ // logger.Info("localNode: %v %v\n", nodeName, nodeAddress)
+ mblist.SendBestEffort(&localNode, []byte(message))
+ time.Sleep(delay)
+ }
}
// Ready Returns a channel that will be closed when serf is ready
@@ -105,8 +290,8 @@
// Stop serf agent
func (a *Agent) Stop() {
if a.errorCh != nil {
- a.Leave()
- a.Shutdown()
+ logger.Info("a.Shutdown()", a.Leave())
+ logger.Info("a.Shutdown()", a.Shutdown())
close(a.errorCh)
a.errorCh = nil
}
@@ -122,13 +307,13 @@
return nil
}
-// GroupMembers returns a point-in-time snapshot of the members of by groupName
-func (a *Agent) GroupMembers(groupName string) (members []serf.Member) {
+// GroupMembers returns a point-in-time snapshot of the members of by clusterID
+func (a *Agent) GroupMembers(clusterID string) (members []serf.Member) {
serfAgent := a.Agent.Serf()
if serfAgent != nil {
for _, member := range serfAgent.Members() {
- log.Debugf("member = %s, groupName = %s", member.Name, member.Tags[tagKeyClusterName])
- if member.Tags[tagKeyClusterName] == groupName {
+ logger.Info("member = %s, clusterID = %s", member.Name, member.Tags[tagKeyClusterID])
+ if member.Tags[tagKeyClusterID] == clusterID {
members = append(members, member)
}
}
@@ -172,7 +357,7 @@
func (a *Agent) retryJoin(ctx context.Context) (err error) {
if len(a.conf.RetryJoin) == 0 {
- log.Infof("retry join mumber %d", len(a.conf.RetryJoin))
+ logger.Error("retry join mumber %d", len(a.conf.RetryJoin))
return nil
}
@@ -180,13 +365,13 @@
attempt := 0
ticker := time.NewTicker(a.conf.RetryInterval)
for {
- log.Infof("serf: Joining cluster...(replay: %v)", a.conf.ReplayOnJoin)
+ logger.Info("serf: Joining cluster...(replay: %v)", a.conf.ReplayOnJoin)
var n int
// Try to join the specified serf nodes
n, err = a.Join(a.conf.RetryJoin, a.conf.ReplayOnJoin)
if err == nil {
- log.Infof("serf: Join completed. Synced with %d initial agents", n)
+ logger.Error("serf: Join completed. Synced with %d initial agents", n)
break
}
attempt++
@@ -196,7 +381,7 @@
// else agent will try to join other nodes until successful always
if a.conf.RetryMaxAttempts > 0 && attempt > a.conf.RetryMaxAttempts {
err = errors.New("serf: maximum retry join attempts made, exiting")
- log.Errorf(err, err.Error())
+ logger.Error(err, err.Error())
break
}
select {
@@ -211,3 +396,256 @@
ticker.Stop()
return
}
+
+//GetDbFromCluster get the newest database after join cluster
+//dbPathWrite the path where to write after got a database,
+func (a *Agent) GetDbFromCluster(dbPathWrite string) {
+ //members: get name of first member
+ mbs := a.GroupMembers(a.conf.ClusterID)
+ var specmembername string
+ for _, m := range mbs {
+ if m.Addr.String() != a.conf.BindAddr {
+ specmembername = m.Name
+ break
+ }
+ }
+ logger.Info(specmembername)
+
+ //query: get db file.
+ params := serf.QueryParam{
+ FilterNodes: strings.Fields(specmembername),
+ }
+
+ resp, err := a.Query(QueryEventGetDB, []byte(""), ¶ms)
+ if err == nil || !strings.Contains(err.Error(), "cannot contain") {
+ logger.Error("err: ", err)
+ }
+
+ go func() {
+ respCh := resp.ResponseCh()
+ for {
+ select {
+ case r := <-respCh:
+ logger.Info("x length is: ", len(r.Payload))
+
+ // // byte to file.
+ SerfDbConn.Close()
+ SerfDbConn = nil
+ err = ioutil.WriteFile(dbPathWrite, r.Payload, 0644)
+ if err != nil {
+ logger.Error("query byte to file error!", err)
+ }
+ err := InitDbConn("")
+ if err != nil {
+ logger.Error("create db conn of test.db error: ", err)
+ }
+ return
+ }
+ }
+ }()
+}
+
+//GetDbFromCluster get the newest database after join cluster
+//dbPathWrite the path where to write after got a database,
+func (a *Agent) GetTableDataFromCluster(tableNames []string) (*[]string,error) {
+ //members: get name of first member
+ mbs := a.GroupMembers(a.conf.ClusterID)
+ var specmembername string
+ for _, m := range mbs {
+ logger.Info("m",m)
+ if m.Name != a.conf.NodeName { //鍓嶇紑锛欴SVAD:鍒嗘瀽鏈嶅姟鍣� DSPAD:杩涘嚭鍏ad
+ if strings.HasPrefix(a.conf.NodeName, "DSVAD"){
+ if strings.HasPrefix(m.Name, "DSVAD") {
+ specmembername = m.Name
+ break
+ }
+ }else{
+ specmembername = m.Name
+ break
+ }
+ }
+ }
+ logger.Info("mbs:",mbs,"a.conf.BindAddr:",a.conf.BindAddr,"specmembername:",specmembername)
+
+ //query: get db file.
+ params := serf.QueryParam{
+ FilterNodes: strings.Fields(specmembername),
+ }
+
+ //SQL
+ tBytes, _ := json.Marshal(tableNames)
+
+ resp, err := a.Query(QueryEventUpdateDBData, tBytes, ¶ms)
+ if err == nil || !strings.Contains(err.Error(), "cannot contain") {
+ logger.Error("err: ", err)
+ }
+ logger.Info("Query.resp.err:",err,"resp:",resp)
+
+ var wg sync.WaitGroup
+ wg.Add(1)
+ var dumpSqls []string
+ go func() {
+ defer wg.Done()
+ respCh := resp.ResponseCh()
+ for {
+ select {
+ case r := <-respCh:
+ logger.Info("Query response's len:", len(r.Payload))
+ err := json.Unmarshal(r.Payload, &dumpSqls)
+ if err ==nil {
+ logger.Error("dumpSql:",dumpSqls)
+ logger.Error("data dump success")
+ }
+ return
+ }
+ }
+ }()
+ wg.Wait()
+ return &dumpSqls,nil
+
+ //r, err = c.Query([]string{query}, false, false)
+ //if err != nil {
+ // return err
+ //}
+ //for _, x := range r[0].Values {
+ // y := logger.Info("%s;\n", x[0].(string))
+ // if _, err := w.Write([]byte(y)); err != nil {
+ // return err
+ // }
+ //}
+
+}
+
+type SqlUserEvent struct {
+ Owner string `json:"owner"`
+ Sql []string `json:"sql"`
+}
+
+//SyncSql boardcast sql to cluster
+func (a *Agent) SyncSql(sqlOp []string) {
+ // event : use to send command to operate db.
+ var sqlUe = SqlUserEvent{
+ Owner: a.conf.NodeName,
+ Sql: sqlOp,
+ }
+ ueB, err := json.Marshal(sqlUe)
+ if err !=nil {
+ logger.Error("sqlUE marshal err:",err)
+ return
+ }
+ err = a.UserEvent(UserEventSyncSql, ueB, false)
+ if err == nil || !strings.Contains(err.Error(), "cannot contain") {
+ logger.Error("err: ", err)
+ }
+}
+
+//鏇存柊鍚屾搴撶殑姣斿缂撳瓨
+func (a *Agent) SyncDbTablePersonCache(b []byte) {
+ err := a.UserEvent(UserEventSyncDbTablePersonCache, b, false)
+ if err !=nil{
+ logger.Error("UserEventSyncDbTablePersonCache err:",err)
+ }
+}
+
+//Init serf Init
+func Init(clusterID string, password string, nodeID string, addrs []string) (*Agent, error) {
+ agent, err := InitNode(clusterID, password, nodeID)
+ if err != nil {
+ logger.Error("InitNode failed, error: %s", err)
+ return agent, err
+ }
+
+ err = agent.JoinByNodeAddrs(addrs)
+ if err != nil {
+ logger.Error("JoinByNodeIP failed, error: %s", err)
+ return agent, err
+ }
+
+ return agent, err
+}
+
+//InitNode web鍚庡彴鏀跺埌鍒涘缓闆嗙兢鐨勮姹傦紝
+func InitNode(clusterID string, password string, nodeID string) (*Agent, error) {
+ conf := DefaultConfig()
+ logger.Info("clusterID:", clusterID, "password:", password, "nodeID:", nodeID)
+ conf.ClusterID = clusterID
+ conf.NodeName = nodeID
+ if password == "" {
+ conf.EncryptKey = DefaultEncryptKey
+ } else {
+ if len(password) >= 16 {
+ password = password[:16]
+ } else {
+ password = fmt.Sprintf("%016s", password)[:16]
+ //return nil, fmt.Errorf("error password")
+ }
+ conf.EncryptKey = password
+ }
+ agent, err := Create(conf)
+ if err != nil {
+ logger.Error("create agent failed, error: %s", err)
+ return agent, err
+ }
+
+ agent.Start(context.Background())
+ //<- agent.readyCh
+ go func() {
+ agent.ShutdownCh()
+ }()
+ time.Sleep(time.Second)
+ logger.Info("Stats:", agent.Agent.Serf().Stats())
+ logger.Info("EncryptionEnabled:", agent.Agent.Serf().EncryptionEnabled())
+ logger.Info("create agent sucess!!")
+
+ return agent, nil
+}
+
+func (a *Agent) JoinByNodeAddrs(addrs []string) error {
+ var nodes []string
+
+ if len(addrs) == 0 {
+ return fmt.Errorf("No Nodes To Join!")
+ }
+ for _, addr := range addrs {
+ nodes = append(nodes, addr)
+ }
+
+ a.Agent.Join(nodes, true)
+
+ return nil
+}
+
+//func (a *Agent) JoinByNodeIP(ips []string) error {
+// var nodes []string
+//
+// if len(ips) == 0 {
+// return fmt.Errorf("No Nodes To Join!")
+// }
+// for _, ip := range ips {
+// node := fmt.Sprintf("%s:%d", ip, DefaultBindPort)
+// nodes = append(nodes, node)
+// }
+//
+// n, err := a.Agent.Join(nodes, true)
+// if err != nil || n == 0 {
+// return fmt.Errorf("Error Encrypt Key!")
+// }
+//
+// return err
+//}
+
+func (a *Agent) GetNodes() (nodes []NodeInfo) {
+ var node NodeInfo
+ logger.Info("a.conf.ClusterID:", a.conf.ClusterID)
+ mbs := a.GroupMembers(a.conf.ClusterID)
+ for _, mb := range mbs {
+ node.NodeID = mb.Name
+ node.NodeAddress = mb.Addr.String() + ":" + strconv.Itoa(int(mb.Port))
+ node.IsAlive = int(mb.Status)
+ node.ClusterID = mb.Tags[tagKeyClusterID]
+
+ nodes = append(nodes, node)
+ }
+
+ return nodes
+}
--
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