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inner_api.go
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/
inner_api.go
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package cluster
import (
"encoding/base64"
"fmt"
"github.com/gin-gonic/gin"
"github.com/quexer/utee"
"net/http"
"strconv"
"strings"
)
const ginKeyCluster = "ginKeyCluster"
func initGin(cluster *Cluster, conf *Config) {
lg.Println("init inner http2 server on", conf.DataExchangePort)
router := gin.Default()
g := router.Group("/inner")
g.Use(func(c *gin.Context) {
c.Set(ginKeyCluster, cluster)
})
g.POST("/online", ginOnline)
g.POST("/offline", ginOffline)
g.POST("/kick", ginKick)
g.POST("/send", ginSend)
g.GET("/query", ginQuery)
err := http.ListenAndServeTLS(fmt.Sprintf(":%d", conf.DataExchangePort), conf.DataExchangeCertPath, conf.DataExchangeKeyPath, router)
lg.Fatal("inner api init fail", err)
}
//one of my user has got online on other node
func ginOnline(c *gin.Context) {
id := c.PostForm("id")
node := c.PostForm("node")
if empty(id, node) {
c.JSON(400, gin.H{"status": "id, node are required"})
return
}
uid, err := strconv.Atoi(id)
if err != nil {
c.JSON(400, gin.H{"status": "bad id:" + id})
return
}
cluster := c.MustGet(ginKeyCluster).(*Cluster)
if _, b := cluster.belongTo(uid); !b {
lg.Printf("[warn] weird, %s not belong to me\n", id)
}
cluster.hub.Kick(uid)
if s, ok := cluster.orphanMap.Get(uid); ok {
if oldNode := s.(string); oldNode != node {
if f, err := cluster.http(oldNode); err != nil {
utee.Log(err, "[remote online] unkown node "+oldNode)
} else {
go clsKick(f, fmt.Sprint(uid))
}
}
}
cluster.orphanMap.Put(uid, node)
c.JSON(200, gin.H{"status": "ok"})
}
func ginOffline(c *gin.Context) {
id := c.PostForm("id")
node := c.PostForm("node")
if empty(id, node) {
c.JSON(400, gin.H{"status": "id, node are required"})
return
}
uid, err := strconv.Atoi(id)
if err != nil {
c.JSON(400, gin.H{"status": "bad id:" + id})
return
}
cluster := c.MustGet(ginKeyCluster).(*Cluster)
if _, b := cluster.belongTo(uid); !b {
lg.Printf("[warn] weird, %s not belong to me\n", id)
}
s, ok := cluster.orphanMap.Get(uid)
if ok {
if s.(string) == node {
cluster.orphanMap.Remove(uid)
} else {
//maybe a new remote connection has kicked the old one
lg.Printf("[warn] node inconsist, assume %v on %v but on %s\n", uid, s, node)
}
}
c.JSON(200, gin.H{"status": "ok"})
}
//remote send
func ginSend(c *gin.Context) {
id := c.PostForm("id")
data := c.PostForm("data")
ttl := c.PostForm("ttl")
if empty(id, data, ttl) {
c.JSON(400, gin.H{"status": "id, data are required"})
return
}
uid, err := strconv.Atoi(id)
if err != nil {
c.JSON(400, gin.H{"status": "bad id:" + id})
return
}
b, err := base64.StdEncoding.DecodeString(data)
if err != nil {
c.JSON(400, gin.H{"status": "bad data, decode error, " + data})
return
}
cluster := c.MustGet(ginKeyCluster).(*Cluster)
n, err := strconv.Atoi(ttl)
if err != nil || n < 0 {
c.JSON(400, gin.H{"status": "bad ttl:" + ttl})
return
}
if err = cluster.hub.Send(uid, b, uint32(n)); err != nil {
utee.Log(err, "send")
c.JSON(500, gin.H{"status": "send err"})
return
}
c.JSON(200, gin.H{"status": "ok"})
}
// remote kick
func ginKick(c *gin.Context) {
id := c.PostForm("id")
uid, err := strconv.Atoi(id)
if err != nil {
c.JSON(400, gin.H{"status": "bad id:" + id})
return
}
cluster := c.MustGet(ginKeyCluster).(*Cluster)
if _, b := cluster.belongTo(uid); !b {
lg.Printf("[warn] weird, remote kicking my user %s ?\n", id)
}
cluster.hub.Kick(uid)
c.JSON(200, gin.H{"status": "ok"})
}
//return node name if user online, else ""
func ginQuery(c *gin.Context) {
id := c.Query("id")
uid, err := strconv.Atoi(id)
if err != nil {
c.JSON(400, gin.H{"status": "bad id:" + id})
return
}
nodeName := ""
cluster := c.MustGet(ginKeyCluster).(*Cluster)
if cluster.hub.CheckOnline(uid) {
nodeName = cluster.localName
} else {
if s, ok := cluster.orphanMap.Get(uid); ok {
nodeName = s.(string)
}
}
c.JSON(200, gin.H{"status": "ok", "node": nodeName})
}
func empty(l ...string) bool {
for _, s := range l {
if strings.TrimSpace(s) != "" {
return false
}
}
return true
}