From 0ffe7619981c3b42fbd93469f0fd5e29a302e28f Mon Sep 17 00:00:00 2001
From: liuxiaolong <736321739@qq.com>
Date: 星期四, 08 八月 2019 16:59:05 +0800
Subject: [PATCH] log
---
agent.go | 410 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 390 insertions(+), 20 deletions(-)
diff --git a/agent.go b/agent.go
index f1b2e28..70ab249 100644
--- a/agent.go
+++ b/agent.go
@@ -14,16 +14,31 @@
* 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"
+
+ //"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"
+ "log"
+)
+
+const (
+ QueryEventGetDB = "GetDatabase"
+ QueryEventUpdateDBData = "UpdateDBData"
)
// Agent warps the serf agent
@@ -32,6 +47,13 @@
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 +65,21 @@
}
// create serf agent with serf config
+ fmt.Println("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 {
+ 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)
+
return &Agent{
Agent: serfAgent,
conf: conf,
@@ -59,7 +92,7 @@
func (a *Agent) Start(ctx context.Context) {
err := a.Agent.Start()
if err != nil {
- log.Errorf(err, "start serf agent failed")
+ log.Println(err, "start serf agent failed")
a.errorCh <- err
return
}
@@ -67,11 +100,13 @@
err = a.retryJoin(ctx)
if err != nil {
- log.Errorf(err, "start serf agent failed")
+ log.Println(err, "start serf agent failed")
if err != ctx.Err() && a.errorCh != nil {
a.errorCh <- err
}
}
+
+ go a.BroadcastMemberlist(BroadcastInterval * time.Second)
}
// HandleEvent Handles serf.EventMemberJoin events,
@@ -79,17 +114,137 @@
// 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
+
+ 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)
+ }
+
+ case *serf.Query:
+
+ if ev.Name == QueryEventGetDB {
+ //bak file and send resp
+ filename, err := BakDbFile()
+ if err != nil {
+ fmt.Println("bak db file error!")
+ return
+ }
+ fmt.Println(filename)
+
+ filebuf, err := ioutil.ReadFile(filename)
+ fmt.Println("filebuf: ", len(filebuf))
+ if err != nil {
+ 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)
+ return
+ }
+
+ 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)
+ 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)
+ //}
+ var tableNames []string
+ err := json.Unmarshal(ev.Payload, &tableNames)
+ if err !=nil {
+ fmt.Println("Query tableNames unmarshal err")
+ return
+ }
+ datas, err := ExecuteQueryByGorm(tableNames)
+ if err !=nil {
+ fmt.Println("queryByGorm err")
+ return
+ }
+ bytesReturn, err := json.Marshal(datas)
+ fmt.Println("results: ", bytesReturn)
+ if query, ok := event.(*serf.Query); ok {
+ if err := query.Respond(bytesReturn); err != nil {
+ fmt.Printf("err: %s\n", err)
+ return
+ }
+ }
+
+ //var res []*Rows
+ //json.Unmarshal(bytesReturn, &res)
+ }
+
+ default:
+ fmt.Printf("Unknown event type: %s\n", ev.EventType().String())
}
- if a.conf.Mode == ModeCluster {
- if len(a.GroupMembers(a.conf.ClusterName)) < groupExpect {
- return
- }
+ //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) {
+ //serf := a.serf
+ serf := a.Agent.Serf()
+ mb := serf.LocalMember()
+ mblist := serf.Memberlist()
+ fmt.Println("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 {
+ // fmt.Printf("localNode: %v %v\n", nodeName, nodeAddress)
+ mblist.SendBestEffort(&localNode, []byte(message))
+ time.Sleep(delay)
}
- a.DeregisterEventHandler(a)
- close(a.readyCh)
}
// Ready Returns a channel that will be closed when serf is ready
@@ -122,13 +277,13 @@
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 {
+ log.Printf("member = %s, clusterID = %s", member.Name, member.Tags[tagKeyClusterID])
+ if member.Tags[tagKeyClusterID] == clusterID {
members = append(members, member)
}
}
@@ -172,7 +327,7 @@
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))
+ log.Printf("retry join mumber %d", len(a.conf.RetryJoin))
return nil
}
@@ -180,13 +335,13 @@
attempt := 0
ticker := time.NewTicker(a.conf.RetryInterval)
for {
- log.Infof("serf: Joining cluster...(replay: %v)", a.conf.ReplayOnJoin)
+ log.Printf("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)
+ log.Printf("serf: Join completed. Synced with %d initial agents", n)
break
}
attempt++
@@ -196,7 +351,7 @@
// 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())
+ log.Println(err, err.Error())
break
}
select {
@@ -211,3 +366,218 @@
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
+ }
+ }
+ fmt.Println(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") {
+ fmt.Println("err: ", err)
+ }
+
+ go func() {
+ respCh := resp.ResponseCh()
+ for {
+ select {
+ case r := <-respCh:
+ 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)
+ }
+ err := InitDbConn("")
+ if err != nil {
+ fmt.Println("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) error {
+ //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
+ }
+ }
+ fmt.Println(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)
+ }
+
+
+ go func() {
+ respCh := resp.ResponseCh()
+ for {
+ select {
+ case r := <-respCh:
+ fmt.Println("x length is: ", len(r.Payload))
+ // // byte to file.
+ var dumpSqls []string
+ err := json.Unmarshal(r.Payload, &dumpSqls)
+ if err ==nil {
+ if flag,_ := ExecuteSqlByGorm(dumpSqls);flag{
+ fmt.Println("data dump success")
+ }
+ }
+ return
+ }
+ }
+ }()
+ return 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
+ // }
+ //}
+
+}
+
+//SyncSql boardcast sql to cluster
+func (a *Agent) SyncSql(sqlOp string) {
+ // event : use to send command to operate db.
+ err := a.UserEvent("SyncSql", []byte(sqlOp), false)
+ if err == nil || !strings.Contains(err.Error(), "cannot contain") {
+ 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)
+ if err != nil {
+ fmt.Printf("InitNode failed, error: %s", err)
+ return agent, err
+ }
+
+ err = agent.JoinByNodeIP(ips)
+ if err != nil {
+ fmt.Printf("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()
+ fmt.Println("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 {
+ fmt.Printf("create agent failed, error: %s", err)
+ return agent, err
+ }
+
+ agent.Start(context.Background())
+ //<- agent.readyCh
+ go func() {
+ 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!!")
+
+ return agent, 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 {
+ a.Stop()
+ fmt.Println("Stop node")
+ return fmt.Errorf("Error Encrypt Key!")
+ }
+
+ return err
+}
+
+type Node struct {
+ clusterID string
+ NodeID string
+ IP string
+ isAlive int //StatusNone:0, StatusAlive:1, StatusLeaving:2, StatusLeft:3, StatusFailed:4
+}
+
+func (a *Agent) GetNodes() (nodes []Node) {
+ var node Node
+ 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]
+
+ nodes = append(nodes, node)
+ }
+
+ return nodes
+}
--
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