From 112bfee1c46a183beb4942f3a459aacf33d77d09 Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期五, 06 九月 2019 17:46:54 +0800
Subject: [PATCH] 服务器只能到服务器去拉取数据
---
agent.go | 263 +++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 197 insertions(+), 66 deletions(-)
diff --git a/agent.go b/agent.go
index a6a77cc..125f421 100644
--- a/agent.go
+++ b/agent.go
@@ -25,6 +25,8 @@
"io/ioutil"
"net"
"os"
+ "strconv"
+ "sync"
//"os"
"strings"
@@ -37,9 +39,12 @@
)
const (
- QueryEventGetDB = "GetDatabase"
+ QueryEventGetDB = "GetDatabase"
QueryEventUpdateDBData = "UpdateDBData"
+ UserEventSyncSql = "SyncSql"
+ UserEventSyncDbTablePersonCache = "SyncCache"
)
+
// Agent warps the serf agent
type Agent struct {
*agent.Agent
@@ -49,10 +54,10 @@
}
type NodeInfo struct {
- ClusterID string `json:"clusterID"`
- NodeID string `json:"nodeID"`
- NodeAddress string `json:"nodeAddress"`
- IsAlive int `json:"isAlive"`
+ ClusterID string `json:"clusterID"`
+ NodeID string `json:"nodeID"`
+ NodeAddress string `json:"nodeAddress"`
+ IsAlive int `json:"isAlive"`
}
// Create create serf agent with config
@@ -64,7 +69,7 @@
}
// 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
@@ -108,6 +113,8 @@
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",
@@ -116,19 +123,26 @@
switch ev := event.(type) {
case serf.UserEvent:
- fmt.Println(string(ev.Payload))
- var tmpstringslice []string
- tmpstringslice = append(tmpstringslice, string(ev.Payload))
- fmt.Println(tmpstringslice)
- results, err := ExecuteWriteSql(tmpstringslice)
-
- for _, result := range results {
- fmt.Println(result, "results err: ", err)
+ if ev.Name == UserEventSyncSql {
+ var sqlUe SqlUserEvent
+ err := json.Unmarshal(ev.Payload, &sqlUe)
+ if err !=nil {
+ fmt.Println("sqlUe unmarshal err:",err)
+ return
+ }
+ if sqlUe.Owner != a.conf.NodeName {
+ //results, err := ExecuteWriteSql(sqlArr)
+ flag, _ := ExecuteSqlByGorm(sqlUe.Sql)
+ fmt.Println("userEvent exec ",sqlUe.Sql,",Result:",flag)
+ }
+ } else if ev.Name == UserEventSyncDbTablePersonCache {
+ SyncDbTablePersonCacheChan <- ev.Payload
}
+
case *serf.Query:
- if ev.Name == QueryEventGetDB{
+ if ev.Name == QueryEventGetDB {
//bak file and send resp
filename, err := BakDbFile()
if err != nil {
@@ -158,22 +172,33 @@
}
}
} 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)
+ //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)
+ //}
+ var tableNames []string
+ err := json.Unmarshal(ev.Payload, &tableNames)
+ if err !=nil {
+ fmt.Println("Query tableNames unmarshal err")
return
}
- var rowsReturn []Rows
- for _,r := range rows {
- rowsReturn = append(rowsReturn, *r)
+ fmt.Println("Query tableNames:",tableNames)
+ datas, err := ExecuteQueryByGorm(tableNames)
+ if err !=nil {
+ fmt.Println("queryByGorm err")
+ return
}
-
- bytesReturn, err := json.Marshal(rowsReturn)
- fmt.Println("results: ", bytesReturn)
+ bytesReturn, err := json.Marshal(datas)
+ fmt.Println("results.len: ", len(bytesReturn))
if query, ok := event.(*serf.Query); ok {
if err := query.Respond(bytesReturn); err != nil {
fmt.Printf("err: %s\n", err)
@@ -183,6 +208,17 @@
//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 })
+
+ fmt.Println("EventMemberLeave,current Members:",ev.Members)
+ }
+ return
}
@@ -359,7 +395,7 @@
//GetDbFromCluster get the newest database after join cluster
//dbPathWrite the path where to write after got a database,
-func (a *Agent)GetDbFromCluster(dbPathWrite string) {
+func (a *Agent) GetDbFromCluster(dbPathWrite string) {
//members: get name of first member
mbs := a.GroupMembers(a.conf.ClusterID)
var specmembername string
@@ -405,24 +441,117 @@
}()
}
+//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 {
+ 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, "DSVAD"){
+ if strings.HasPrefix(m.Name, "DSVAD") {
+ specmembername = m.Name
+ break
+ }
+ }else{
+ specmembername = m.Name
+ break
+ }
+ }
+ }
+ fmt.Println("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") {
+ fmt.Println("err: ", 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))
+ err := json.Unmarshal(r.Payload, &dumpSqls)
+ if err ==nil {
+ fmt.Println("dumpSql:",dumpSqls)
+ fmt.Println("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 := fmt.Sprintf("%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) {
+func (a *Agent) SyncSql(sqlOp []string) {
// event : use to send command to operate db.
- err := a.UserEvent("SyncSql", []byte(sqlOp), false)
+ var sqlUe = SqlUserEvent{
+ Owner: a.conf.NodeName,
+ Sql: sqlOp,
+ }
+ ueB, err := json.Marshal(sqlUe)
+ if err !=nil {
+ fmt.Println("sqlUE marshal err:",err)
+ return
+ }
+ err = a.UserEvent(UserEventSyncSql, ueB, false)
if err == nil || !strings.Contains(err.Error(), "cannot contain") {
fmt.Println("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{
+ fmt.Println("UserEventSyncDbTablePersonCache err:",err)
+ }
+}
+
//Init serf Init
-func Init(clusterID string, password string, nodeID string, ips []string) (*Agent, error) {
+func Init(clusterID string, password string, nodeID string, addrs []string) (*Agent, error) {
agent, err := InitNode(clusterID, password, nodeID)
if err != nil {
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)
return agent, err
@@ -439,10 +568,10 @@
conf.NodeName = nodeID
if password == "" {
conf.EncryptKey = DefaultEncryptKey
- }else{
+ } else {
if len(password) >= 16 {
password = password[:16]
- }else{
+ } else {
password = fmt.Sprintf("%016s", password)[:16]
//return nil, fmt.Errorf("error password")
}
@@ -460,57 +589,59 @@
agent.ShutdownCh()
}()
time.Sleep(time.Second)
- fmt.Println("Stats:",agent.Agent.Serf().Stats())
- fmt.Println("EncryptionEnabled:",agent.Agent.Serf().EncryptionEnabled())
- fmt.Printf("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
}
-
-
-
-
--
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