seaweedfs/go/weed/weed_server/volume_server.go
Chris Lu 27c74a7e66 Major:
change replication_type to ReplicaPlacement, hopefully cleaner code
works for 9 possible ReplicaPlacement
xyz
x : number of copies on other data centers
y : number of copies on other racks
z : number of copies on current rack
x y z each can be 0,1,2

Minor:
weed server "-mdir" default to "-dir" if empty
2014-03-02 22:16:54 -08:00

72 lines
2.1 KiB
Go

package weed_server
import (
"code.google.com/p/weed-fs/go/glog"
"code.google.com/p/weed-fs/go/storage"
"math/rand"
"net/http"
"time"
)
type VolumeServer struct {
masterNode string
pulseSeconds int
dataCenter string
rack string
whiteList []string
store *storage.Store
version string
}
func NewVolumeServer(r *http.ServeMux, version string, ip string, port int, publicUrl string, folders []string, maxCounts []int,
masterNode string, pulseSeconds int,
dataCenter string, rack string,
whiteList []string) *VolumeServer {
vs := &VolumeServer{
version: version,
masterNode: masterNode,
pulseSeconds: pulseSeconds,
dataCenter: dataCenter,
rack: rack,
whiteList: whiteList,
}
vs.store = storage.NewStore(port, ip, publicUrl, folders, maxCounts)
r.HandleFunc("/submit", secure(vs.whiteList, vs.submitFromVolumeServerHandler))
r.HandleFunc("/status", secure(vs.whiteList, vs.statusHandler))
r.HandleFunc("/admin/assign_volume", secure(vs.whiteList, vs.assignVolumeHandler))
r.HandleFunc("/admin/vacuum_volume_check", secure(vs.whiteList, vs.vacuumVolumeCheckHandler))
r.HandleFunc("/admin/vacuum_volume_compact", secure(vs.whiteList, vs.vacuumVolumeCompactHandler))
r.HandleFunc("/admin/vacuum_volume_commit", secure(vs.whiteList, vs.vacuumVolumeCommitHandler))
r.HandleFunc("/admin/freeze_volume", secure(vs.whiteList, vs.freezeVolumeHandler))
r.HandleFunc("/", vs.storeHandler)
go func() {
connected := true
vs.store.SetBootstrapMaster(vs.masterNode)
vs.store.SetDataCenter(vs.dataCenter)
vs.store.SetRack(vs.rack)
for {
err := vs.store.Join()
if err == nil {
if !connected {
connected = true
glog.V(0).Infoln("Reconnected with master")
}
} else {
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)
}
}
}()
glog.V(0).Infoln("store joined at", vs.masterNode)
return vs
}