seaweedfs/go/weed/weed_server/volume_server.go

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package weed_server
import (
"math/rand"
"net/http"
"sync"
"time"
"github.com/chrislusf/seaweedfs/go/glog"
"github.com/chrislusf/seaweedfs/go/security"
"github.com/chrislusf/seaweedfs/go/storage"
)
type VolumeServer struct {
masterNode string
mnLock sync.RWMutex
pulseSeconds int
dataCenter string
rack string
store *storage.Store
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guard *security.Guard
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needleMapKind storage.NeedleMapType
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FixJpgOrientation bool
}
func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
port int, publicUrl string,
folders []string, maxCounts []int,
needleMapKind storage.NeedleMapType,
masterNode string, pulseSeconds int,
dataCenter string, rack string,
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whiteList []string,
fixJpgOrientation bool) *VolumeServer {
vs := &VolumeServer{
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pulseSeconds: pulseSeconds,
dataCenter: dataCenter,
rack: rack,
needleMapKind: needleMapKind,
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FixJpgOrientation: fixJpgOrientation,
}
vs.SetMasterNode(masterNode)
vs.store = storage.NewStore(port, ip, publicUrl, folders, maxCounts, vs.needleMapKind)
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vs.guard = security.NewGuard(whiteList, "")
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adminMux.HandleFunc("/ui/index.html", vs.uiStatusHandler)
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adminMux.HandleFunc("/status", vs.guard.WhiteList(vs.statusHandler))
adminMux.HandleFunc("/admin/assign_volume", vs.guard.WhiteList(vs.assignVolumeHandler))
adminMux.HandleFunc("/admin/vacuum_volume_check", vs.guard.WhiteList(vs.vacuumVolumeCheckHandler))
adminMux.HandleFunc("/admin/vacuum_volume_compact", vs.guard.WhiteList(vs.vacuumVolumeCompactHandler))
adminMux.HandleFunc("/admin/vacuum_volume_commit", vs.guard.WhiteList(vs.vacuumVolumeCommitHandler))
adminMux.HandleFunc("/admin/delete_collection", vs.guard.WhiteList(vs.deleteCollectionHandler))
adminMux.HandleFunc("/stats/counter", vs.guard.WhiteList(statsCounterHandler))
adminMux.HandleFunc("/stats/memory", vs.guard.WhiteList(statsMemoryHandler))
adminMux.HandleFunc("/stats/disk", vs.guard.WhiteList(vs.statsDiskHandler))
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adminMux.HandleFunc("/delete", vs.guard.WhiteList(vs.batchDeleteHandler))
adminMux.HandleFunc("/", vs.privateStoreHandler)
if publicMux != adminMux {
// separated admin and public port
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publicMux.HandleFunc("/", vs.publicReadOnlyHandler)
}
go func() {
connected := true
vs.store.SetBootstrapMaster(vs.GetMasterNode())
vs.store.SetDataCenter(vs.dataCenter)
vs.store.SetRack(vs.rack)
for {
master, secretKey, err := vs.store.SendHeartbeatToMaster()
if err == nil {
if !connected {
connected = true
vs.SetMasterNode(master)
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vs.guard.SecretKey = secretKey
glog.V(0).Infoln("Volume Server Connected with master at", master)
}
} else {
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glog.V(1).Infof("Volume Server Failed to talk with master %+v: %v", vs, err)
if connected {
connected = false
}
}
if connected {
time.Sleep(time.Duration(float32(vs.pulseSeconds*1e3)*(1+rand.Float32())) * time.Millisecond)
} else {
time.Sleep(time.Duration(float32(vs.pulseSeconds*1e3)*0.25) * time.Millisecond)
}
}
}()
return vs
}
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func (vs *VolumeServer) GetMasterNode() string {
vs.mnLock.RLock()
defer vs.mnLock.RUnlock()
return vs.masterNode
}
func (vs *VolumeServer) SetMasterNode(masterNode string) {
vs.mnLock.Lock()
defer vs.mnLock.Unlock()
vs.masterNode = masterNode
}
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func (vs *VolumeServer) Shutdown() {
glog.V(0).Infoln("Shutting down volume server...")
vs.store.Close()
glog.V(0).Infoln("Shut down successfully!")
}
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func (vs *VolumeServer) jwt(fileId string) security.EncodedJwt {
return security.GenJwt(vs.guard.SecretKey, fileId)
}