mirror of
https://github.com/seaweedfs/seaweedfs.git
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133 lines
3.4 KiB
Go
133 lines
3.4 KiB
Go
package weed_server
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import (
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"math/rand"
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"net/http"
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"strconv"
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"sync"
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"time"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/security"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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_ "github.com/chrislusf/seaweedfs/weed/filer2/leveldb"
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_ "github.com/chrislusf/seaweedfs/weed/filer2/memdb"
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_ "github.com/chrislusf/seaweedfs/weed/filer2/mysql"
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)
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type FilerServer struct {
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port string
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master string
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mnLock sync.RWMutex
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collection string
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defaultReplication string
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redirectOnRead bool
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disableDirListing bool
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secret security.Secret
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filer *filer2.Filer
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maxMB int
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masterNodes *storage.MasterNodes
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}
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func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, ip string, port int, master string, collection string,
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replication string, redirectOnRead bool, disableDirListing bool,
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maxMB int,
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secret string,
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) (fs *FilerServer, err error) {
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fs = &FilerServer{
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master: master,
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collection: collection,
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defaultReplication: replication,
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redirectOnRead: redirectOnRead,
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disableDirListing: disableDirListing,
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maxMB: maxMB,
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port: ip + ":" + strconv.Itoa(port),
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}
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fs.filer = filer2.NewFiler(master)
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fs.filer.LoadConfiguration()
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defaultMux.HandleFunc("/admin/register", fs.registerHandler)
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defaultMux.HandleFunc("/", fs.filerHandler)
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if defaultMux != readonlyMux {
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readonlyMux.HandleFunc("/", fs.readonlyFilerHandler)
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}
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go func() {
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connected := true
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fs.masterNodes = storage.NewMasterNodes(fs.master)
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glog.V(0).Infof("Filer server bootstraps with master %s", fs.getMasterNode())
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for {
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glog.V(4).Infof("Filer server sending to master %s", fs.getMasterNode())
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master, err := fs.detectHealthyMaster(fs.getMasterNode())
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if err == nil {
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if !connected {
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connected = true
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if fs.getMasterNode() != master {
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fs.setMasterNode(master)
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}
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glog.V(0).Infoln("Filer Server Connected with master at", master)
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}
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} else {
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glog.V(1).Infof("Filer Server Failed to talk with master %s: %v", fs.getMasterNode(), err)
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if connected {
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connected = false
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}
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}
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if connected {
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time.Sleep(time.Duration(float32(10*1e3)*(1+rand.Float32())) * time.Millisecond)
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} else {
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time.Sleep(time.Duration(float32(10*1e3)*0.25) * time.Millisecond)
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}
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}
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}()
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return fs, nil
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}
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func (fs *FilerServer) jwt(fileId string) security.EncodedJwt {
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return security.GenJwt(fs.secret, fileId)
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}
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func (fs *FilerServer) getMasterNode() string {
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fs.mnLock.RLock()
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defer fs.mnLock.RUnlock()
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return fs.master
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}
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func (fs *FilerServer) setMasterNode(masterNode string) {
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fs.mnLock.Lock()
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defer fs.mnLock.Unlock()
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fs.master = masterNode
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}
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func (fs *FilerServer) detectHealthyMaster(masterNode string) (master string, e error) {
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if e = checkMaster(masterNode); e != nil {
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fs.masterNodes.Reset()
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for i := 0; i <= 3; i++ {
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master, e = fs.masterNodes.FindMaster()
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if e != nil {
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continue
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} else {
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if e = checkMaster(master); e == nil {
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break
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}
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}
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}
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} else {
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master = masterNode
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}
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return
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}
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func checkMaster(masterNode string) error {
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statUrl := "http://" + masterNode + "/stats/health"
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glog.V(4).Infof("Connecting to %s ...", statUrl)
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_, e := util.Get(statUrl)
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return e
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}
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