From a79ff0adc62e2d9e3e198d7299e7670063201607 Mon Sep 17 00:00:00 2001
From: liuxiaolong <736321739@qq.com>
Date: 星期四, 14 五月 2020 20:48:39 +0800
Subject: [PATCH] rm no use import
---
agent.go | 357 +++++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 234 insertions(+), 123 deletions(-)
diff --git a/agent.go b/agent.go
index 1f84e47..f5bb23b 100644
--- a/agent.go
+++ b/agent.go
@@ -25,6 +25,8 @@
"io/ioutil"
"net"
"os"
+ "strconv"
+ "sync"
//"os"
"strings"
@@ -37,8 +39,10 @@
)
const (
- QueryEventGetDB = "GetDatabase"
- QueryEventUpdateDBData = "UpdateDBData"
+ QueryEventGetDB = "GetDatabase"
+ QueryEventUpdateDBData = "UpdateDBData"
+ UserEventSyncSql = "SyncSql"
+ UserEventSyncDbTablePersonCache = "SyncCache"
)
// Agent warps the serf agent
@@ -57,15 +61,15 @@
}
// Create create serf agent with config
-func Create(conf *Config) (*Agent, error) {
+func Create(conf *Config, snapshotPath string) (*Agent, error) {
// config cover to serf config
- serfConf, err := conf.convertToSerf()
+ serfConf, err := conf.convertToSerf(snapshotPath)
if err != nil {
return nil, err
}
// create serf agent with serf config
- fmt.Println("conf.Config.EncryptKey:", conf.EncryptKey)
+ //fmt.Println("conf.Config.EncryptKey:", conf.EncryptKey)
serfAgent, err := agent.Create(conf.Config, serfConf, nil)
if err != nil {
return nil, err
@@ -73,12 +77,12 @@
// Create the keyring
keyring, err := memberlist.NewKeyring(nil, []byte(conf.EncryptKey))
if err != nil {
- fmt.Printf("Failed to restore keyring: %s", err)
+ //fmt.Printf("Failed to restore keyring: %s", err)
return nil, err
}
serfConf.MemberlistConfig.Keyring = keyring
- fmt.Printf("[INFO] agent: Restored keyring with %d keys from %s",
- len(conf.EncryptKey), conf.EncryptKey)
+ //fmt.Printf("[INFO] agent: Restored keyring with %d keys from %s",
+ // len(conf.EncryptKey), conf.EncryptKey)
return &Agent{
Agent: serfAgent,
@@ -90,6 +94,9 @@
// Start agent
func (a *Agent) Start(ctx context.Context) {
+ log.Println("aaaaaaaaa")
+ //log.Println(string(debug.Stack()))
+ //debug.PrintStack()
err := a.Agent.Start()
if err != nil {
log.Println(err, "start serf agent failed")
@@ -109,6 +116,40 @@
go a.BroadcastMemberlist(BroadcastInterval * time.Second)
}
+// define call back interface
+type ReceiveSqlInterface interface {
+ Forward(content string)
+}
+
+// callback instance
+var receiveSqlInterface ReceiveSqlInterface
+
+// save the callback instance
+func RegisterReceiveSqlInterface(c ReceiveSqlInterface) {
+ receiveSqlInterface = c
+}
+
+type DbHandler interface {
+ Execute(sql string) bool
+}
+
+type DbDumpHandler interface {
+ Dump(tables string) string
+}
+
+//鏁版嵁搴揺xecute鍙ユ焺
+var DbHandle DbHandler
+//鏁版嵁搴撳浠藉彞鏌�,鍙湪syncdb涓敤鍒�
+var dbDumpH DbDumpHandler
+
+func RegisterDbHandler(h DbHandler) {
+ DbHandle = h
+}
+
+func RegisterDbDumpHandler(h DbDumpHandler) {
+ dbDumpH = h
+}
+
// 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",
@@ -117,17 +158,19 @@
switch ev := event.(type) {
case serf.UserEvent:
- var sqlUe SqlUserEvent
- fmt.Println(string(ev.Payload))
- err := json.Unmarshal(ev.Payload, &sqlUe)
- if err !=nil {
- fmt.Println("sqlUe unmarshal err:",err)
- return
- }
- if sqlUe.Owner != a.conf.NodeName {
- results, _ := ExecuteWriteSql(sqlUe.Sql)
- //flag, _ := ExecuteSqlByGorm(sqlUe.Sql)
- fmt.Println("userEvent exec ",sqlUe.Sql,",Result:",results)
+ if ev.Name == UserEventSyncSql {
+ var sqlUe SqlUserEvent
+ //fmt.Println(string(ev.Payload))
+ err := json.Unmarshal(ev.Payload, &sqlUe)
+ if err != nil {
+ //fmt.Println("sqlUe unmarshal err:", err)
+ return
+ }
+ if sqlUe.Owner != a.conf.NodeName {
+ if receiveSqlInterface != nil && sqlUe.Sql !=nil && len(sqlUe.Sql) > 0 {
+ receiveSqlInterface.Forward(sqlUe.Sql[0])
+ }
+ }
}
case *serf.Query:
@@ -136,89 +179,68 @@
//bak file and send resp
filename, err := BakDbFile()
if err != nil {
- fmt.Println("bak db file error!")
+ //fmt.Println("bak db file error!")
return
}
- fmt.Println(filename)
+ //fmt.Println(filename)
filebuf, err := ioutil.ReadFile(filename)
- fmt.Println("filebuf: ", len(filebuf))
+ //fmt.Println("filebuf: ", len(filebuf))
if err != nil {
- fmt.Printf("file to []bytes error: %s\n", err)
+ //fmt.Printf("file to []bytes error: %s\n", err)
return
}
err = os.Remove(filename)
if err != nil {
- fmt.Printf("remove file%s\n failed", filename)
+ //fmt.Printf("remove file%s\n failed", filename)
return
}
- fmt.Println("query payload: ", len(ev.Payload))
+ //fmt.Println("query payload: ", len(ev.Payload))
if query, ok := event.(*serf.Query); ok {
if err := query.Respond(filebuf); err != nil {
- fmt.Printf("err: %s\n", err)
+ //fmt.Printf("err: %s\n", err)
return
}
}
} else if ev.Name == QueryEventUpdateDBData {
- fmt.Println(string(ev.Payload))
- var tmpstringslice []string
- tmpstringslice = append(tmpstringslice, string(ev.Payload))
- fmt.Println(tmpstringslice)
- rows, err := ExecuteQuerySql(tmpstringslice)
- if err != nil {
- fmt.Println("err: ", err)
- return
- }
- var rowsReturn []Rows
- for _, r := range rows {
- rowsReturn = append(rowsReturn, *r)
- }
+ //fmt.Println(string(ev.Payload))
+ var tableNames []string
+ err := json.Unmarshal(ev.Payload, &tableNames)
+ fmt.Println("androidSync tableNames:", tableNames, "err:", err)
- bytesReturn, err := json.Marshal(rowsReturn)
- fmt.Println("results: ", bytesReturn)
+ dumpData := dbDumpH.Dump(strings.Join(tableNames, ","))
+
+ bytesReturn := []byte(dumpData)
+ fmt.Println("androidSync len(bytesReturn): ", len(bytesReturn))
if query, ok := event.(*serf.Query); ok {
if err := query.Respond(bytesReturn); err != nil {
- fmt.Printf("err: %s\n", err)
+ fmt.Println("androidSync query.Respond err:", err)
return
+ } else {
+ fmt.Println("androidSync query.Respond success")
}
}
-
- //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+"'"
- fmt.Println("leaveSql:",leaveSql)
- //ExecuteSqlByGorm([]string{ leaveSql })
-
- fmt.Println("EventMemberLeave,current Members:",ev.Members)
+ 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 + "'"
+ //fmt.Println("leaveSql:", leaveSql)
+ if !DbHandle.Execute(leaveSql) {
+ fmt.Println("DbHandle.Execute ret false")
}
- return
- }
+ //fmt.Println("EventMemberLeave,current Members:", ev.Members)
+ }
+ return
+ }
default:
- fmt.Printf("Unknown event type: %s\n", ev.EventType().String())
+ //fmt.Printf("Unknown event type: %s\n", ev.EventType().String())
}
-
- //if event.EventType() != serf.EventMemberJoin {
- // fmt.Printf("event.EventType() != serf.EventMemberJoin")
- // return
- //}
- //
- //if a.conf.Mode == ModeCluster {
- // if len(a.GroupMembers(a.conf.ClusterID)) < groupExpect {
- // fmt.Printf("len(a.GroupMembers(a.conf.ClusterID)) < groupExpect")
- // return
- // }
- //}
- //a.DeregisterEventHandler(a)
- //close(a.readyCh)
}
func (a *Agent) BroadcastMemberlist(delay time.Duration) {
@@ -226,7 +248,7 @@
serf := a.Agent.Serf()
mb := serf.LocalMember()
mblist := serf.Memberlist()
- fmt.Println("mb:", mb)
+ //fmt.Println("mb:", mb)
// copy local node
localNode := *mblist.LocalNode()
@@ -247,7 +269,7 @@
//localNode.Addr = net.IPv4(255,255,255,255)
localNode.Port = BroadcastPort
for {
- // fmt.Printf("localNode: %v %v\n", nodeName, nodeAddress)
+ // //fmt.Printf("localNode: %v %v\n", nodeName, nodeAddress)
mblist.SendBestEffort(&localNode, []byte(message))
time.Sleep(delay)
}
@@ -385,7 +407,7 @@
break
}
}
- fmt.Println(specmembername)
+ //fmt.Println(specmembername)
//query: get db file.
params := serf.QueryParam{
@@ -394,7 +416,7 @@
resp, err := a.Query(QueryEventGetDB, []byte(""), ¶ms)
if err == nil || !strings.Contains(err.Error(), "cannot contain") {
- fmt.Println("err: ", err)
+ //fmt.Println("err: ", err)
}
go func() {
@@ -402,18 +424,18 @@
for {
select {
case r := <-respCh:
- fmt.Println("x length is: ", len(r.Payload))
+ //fmt.Println("x length is: ", len(r.Payload))
// // byte to file.
SerfDbConn.Close()
SerfDbConn = nil
err = ioutil.WriteFile(dbPathWrite, r.Payload, 0644)
if err != nil {
- fmt.Println("query byte to file error!", err)
+ //fmt.Println("query byte to file error!", err)
}
err := InitDbConn("")
if err != nil {
- fmt.Println("create db conn of test.db error: ", err)
+ //fmt.Println("create db conn of test.db error: ", err)
}
return
}
@@ -421,39 +443,122 @@
}()
}
-type SqlUserEvent struct {
- Owner string `json:"owner"`
- Sql []string `json:"sql"`
+//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
+ targetName := a.GetOneAliveNodeId(20 * time.Second)
+
+ if targetName == "" {
+ return nil, errors.New("alive node not found in cluster")
+ }
+ //fmt.Println("mbs:", mbs, "a.conf.BindAddr:", a.conf.BindAddr, "targetName:", targetName)
+
+ //query: get db file.
+ params := serf.QueryParam{
+ FilterNodes: strings.Fields(targetName),
+ }
+
+ //SQL
+ tBytes, _ := json.Marshal(tableNames)
+
+ resp, err := a.Query(QueryEventUpdateDBData, tBytes, ¶ms)
+ if err == nil || !strings.Contains(err.Error(), "cannot contain") {
+ //fmt.Println("QueryEventUpdateDBData err: ")
+ }
+ fmt.Println("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:
+ fmt.Println("Query response's len:", len(r.Payload))
+ dumpSqls = string(r.Payload)
+ if len(dumpSqls) >0 {
+ fmt.Println("data dump success")
+ } else {
+ fmt.Println("Query response.len = 0")
+ }
+ return
+ }
+ }
+ }()
+ wg.Wait()
+ return &dumpSqls, nil
}
+
+func (a *Agent) GetOneAliveNodeId(timeOut time.Duration) string {
+ nodeId := ""
+ sTk := time.NewTicker(1 * time.Second)
+ outTk := time.NewTicker(timeOut)
+ defer sTk.Stop()
+ defer outTk.Stop()
+
+ for {
+ select {
+ case <- sTk.C:
+ mbs := a.GroupMembers(a.conf.ClusterID)
+ for _, m := range mbs {
+ //fmt.Println("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, "PAD"){
+ if strings.HasPrefix(m.Name, "PAD") {
+ nodeId = m.Name
+ goto Out
+ }
+ }
+ }
+ }
+ case <-outTk.C:
+ fmt.Println("cannot get alive node from cluster,time out")
+ goto Out
+ default:
+
+ }
+ }
+Out:
+ return nodeId
+}
+
+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,
+ Sql: sqlOp,
}
ueB, err := json.Marshal(sqlUe)
- if err !=nil {
- fmt.Println("sqlUE marshal err:",err)
+ if err != nil {
+ //fmt.Println("sqlUE marshal err:", err)
return
}
- err = a.UserEvent("SyncSql", []byte(ueB), false)
+ err = a.UserEvent(UserEventSyncSql, ueB, false)
if err == nil || !strings.Contains(err.Error(), "cannot contain") {
- fmt.Println("err: ", err)
+ //fmt.Println("err: ", err)
}
}
//Init serf Init
-func Init(clusterID string, password string, nodeID string, ips []string) (*Agent, error) {
- agent, err := InitNode(clusterID, password, nodeID)
+func Init(clusterID string, password string, nodeID string, addrs []string, snapshotPath string) (*Agent, error) {
+ agent, err := InitNode(clusterID, password, nodeID, snapshotPath)
if err != nil {
- fmt.Printf("InitNode failed, error: %s", err)
+ //fmt.Printf("InitNode failed, error: %s", err)
return agent, err
}
- err = agent.JoinByNodeIP(ips)
+ err = agent.JoinByNodeAddrs(addrs)
if err != nil {
- fmt.Printf("JoinByNodeIP failed, error: %s", err)
+ //fmt.Printf("JoinByNodeIP failed, error: %s", err)
return agent, err
}
@@ -461,9 +566,9 @@
}
//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) {
+func InitNode(clusterID string, password string, nodeID string, snapshotPath string) (*Agent, error) {
conf := DefaultConfig()
- fmt.Println("clusterID:", clusterID, "password:", password, "nodeID:", nodeID)
+ //fmt.Println("clusterID:", clusterID, "password:", password, "nodeID:", nodeID)
conf.ClusterID = clusterID
conf.NodeName = nodeID
if password == "" {
@@ -477,9 +582,9 @@
}
conf.EncryptKey = password
}
- agent, err := Create(conf)
+ agent, err := Create(conf, snapshotPath)
if err != nil {
- fmt.Printf("create agent failed, error: %s", err)
+ //fmt.Printf("create agent failed, error: %s", err)
return agent, err
}
@@ -489,53 +594,59 @@
agent.ShutdownCh()
}()
time.Sleep(time.Second)
- fmt.Println("Stats:", agent.Agent.Serf().Stats())
- fmt.Println("EncryptionEnabled:", agent.Agent.Serf().EncryptionEnabled())
- fmt.Println("create agent sucess!!")
+ //fmt.Println("Stats:", agent.Agent.Serf().Stats())
+ //fmt.Println("EncryptionEnabled:", agent.Agent.Serf().EncryptionEnabled())
+ //fmt.Println("create agent sucess!!")
return agent, nil
}
-func (a *Agent) JoinByNodeIP(ips []string) error {
+func (a *Agent) JoinByNodeAddrs(addrs []string) error {
var nodes []string
- if len(ips) == 0 {
+ if len(addrs) == 0 {
return fmt.Errorf("No Nodes To Join!")
}
- for _, ip := range ips {
- node := fmt.Sprintf("%s:%d", ip, DefaultBindPort)
- nodes = append(nodes, node)
+ for _, addr := range addrs {
+ nodes = append(nodes, addr)
}
- n, err := a.Agent.Join(nodes, true)
- if err != nil || n == 0 {
- //a.Stop()
- //fmt.Println("Stop node")
- return fmt.Errorf("Error Encrypt Key!")
- }
+ a.Agent.Join(nodes, true)
- return err
+ return nil
}
-type Node struct {
- clusterID string
- NodeID string
- IP string
- isAlive int //StatusNone:0, StatusAlive:1, StatusLeaving:2, StatusLeft:3, StatusFailed:4
-}
+//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 []Node) {
- var node Node
- fmt.Println("a.conf.ClusterID:", a.conf.ClusterID)
+func (a *Agent) GetNodes() (nodes []NodeInfo) {
+ var node NodeInfo
+ //fmt.Println("a.conf.ClusterID:", a.conf.ClusterID)
mbs := a.GroupMembers(a.conf.ClusterID)
for _, mb := range mbs {
node.NodeID = mb.Name
- node.IP = mb.Addr.String()
- node.isAlive = int(mb.Status)
- node.clusterID = mb.Tags[tagKeyClusterID]
+ 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
-}
+}
\ No newline at end of file
--
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