2013-12-02 09:37:36 +00:00
|
|
|
package weed_server
|
|
|
|
|
|
|
|
import (
|
2015-01-08 08:19:32 +00:00
|
|
|
"fmt"
|
2014-10-26 18:34:55 +00:00
|
|
|
"net/http"
|
|
|
|
"net/http/httputil"
|
|
|
|
"net/url"
|
|
|
|
"sync"
|
|
|
|
|
2014-09-25 08:57:22 +00:00
|
|
|
"github.com/chrislusf/weed-fs/go/glog"
|
2015-01-05 22:20:04 +00:00
|
|
|
"github.com/chrislusf/weed-fs/go/security"
|
2014-09-25 08:57:22 +00:00
|
|
|
"github.com/chrislusf/weed-fs/go/sequence"
|
|
|
|
"github.com/chrislusf/weed-fs/go/topology"
|
|
|
|
"github.com/chrislusf/weed-fs/go/util"
|
2014-02-10 07:37:29 +00:00
|
|
|
"github.com/goraft/raft"
|
2013-12-02 09:37:36 +00:00
|
|
|
"github.com/gorilla/mux"
|
|
|
|
)
|
|
|
|
|
|
|
|
type MasterServer struct {
|
2014-03-03 06:16:54 +00:00
|
|
|
port int
|
|
|
|
metaFolder string
|
|
|
|
volumeSizeLimitMB uint
|
|
|
|
pulseSeconds int
|
|
|
|
defaultReplicaPlacement string
|
|
|
|
garbageThreshold string
|
2015-02-07 23:35:28 +00:00
|
|
|
guard *security.Guard
|
2013-12-02 09:37:36 +00:00
|
|
|
|
2014-03-16 06:03:49 +00:00
|
|
|
Topo *topology.Topology
|
2014-04-13 08:29:52 +00:00
|
|
|
vg *topology.VolumeGrowth
|
2013-12-02 09:37:36 +00:00
|
|
|
vgLock sync.Mutex
|
2014-02-05 09:54:52 +00:00
|
|
|
|
2014-03-12 17:30:57 +00:00
|
|
|
bounedLeaderChan chan int
|
2013-12-02 09:37:36 +00:00
|
|
|
}
|
|
|
|
|
2014-03-25 20:46:59 +00:00
|
|
|
func NewMasterServer(r *mux.Router, port int, metaFolder string,
|
2013-12-02 09:37:36 +00:00
|
|
|
volumeSizeLimitMB uint,
|
|
|
|
pulseSeconds int,
|
|
|
|
confFile string,
|
2014-03-03 06:16:54 +00:00
|
|
|
defaultReplicaPlacement string,
|
2013-12-02 09:37:36 +00:00
|
|
|
garbageThreshold string,
|
2014-02-05 09:54:52 +00:00
|
|
|
whiteList []string,
|
2015-01-05 22:20:04 +00:00
|
|
|
secureKey string,
|
2014-02-05 09:54:52 +00:00
|
|
|
) *MasterServer {
|
2013-12-02 09:37:36 +00:00
|
|
|
ms := &MasterServer{
|
2014-04-15 16:09:40 +00:00
|
|
|
port: port,
|
2014-03-03 06:16:54 +00:00
|
|
|
volumeSizeLimitMB: volumeSizeLimitMB,
|
|
|
|
pulseSeconds: pulseSeconds,
|
|
|
|
defaultReplicaPlacement: defaultReplicaPlacement,
|
|
|
|
garbageThreshold: garbageThreshold,
|
2013-12-02 09:37:36 +00:00
|
|
|
}
|
2014-03-12 17:30:57 +00:00
|
|
|
ms.bounedLeaderChan = make(chan int, 16)
|
2014-04-17 06:43:27 +00:00
|
|
|
seq := sequence.NewMemorySequencer()
|
2013-12-02 09:37:36 +00:00
|
|
|
var e error
|
2014-03-16 06:03:49 +00:00
|
|
|
if ms.Topo, e = topology.NewTopology("topo", confFile, seq,
|
2013-12-02 09:37:36 +00:00
|
|
|
uint64(volumeSizeLimitMB)*1024*1024, pulseSeconds); e != nil {
|
|
|
|
glog.Fatalf("cannot create topology:%s", e)
|
|
|
|
}
|
2014-04-13 08:29:52 +00:00
|
|
|
ms.vg = topology.NewDefaultVolumeGrowth()
|
2013-12-02 09:37:36 +00:00
|
|
|
glog.V(0).Infoln("Volume Size Limit is", volumeSizeLimitMB, "MB")
|
|
|
|
|
2015-02-07 23:35:28 +00:00
|
|
|
ms.guard = security.NewGuard(whiteList, secureKey)
|
2015-01-05 22:20:04 +00:00
|
|
|
|
2015-03-19 17:39:22 +00:00
|
|
|
r.HandleFunc("/ui/index.html", ms.uiStatusHandler)
|
2015-02-07 23:35:28 +00:00
|
|
|
r.HandleFunc("/dir/assign", ms.proxyToLeader(ms.guard.WhiteList(ms.dirAssignHandler)))
|
|
|
|
r.HandleFunc("/dir/lookup", ms.proxyToLeader(ms.guard.WhiteList(ms.dirLookupHandler)))
|
|
|
|
r.HandleFunc("/dir/join", ms.proxyToLeader(ms.guard.WhiteList(ms.dirJoinHandler)))
|
|
|
|
r.HandleFunc("/dir/status", ms.proxyToLeader(ms.guard.WhiteList(ms.dirStatusHandler)))
|
|
|
|
r.HandleFunc("/col/delete", ms.proxyToLeader(ms.guard.WhiteList(ms.collectionDeleteHandler)))
|
|
|
|
r.HandleFunc("/vol/lookup", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeLookupHandler)))
|
|
|
|
r.HandleFunc("/vol/grow", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeGrowHandler)))
|
|
|
|
r.HandleFunc("/vol/status", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeStatusHandler)))
|
|
|
|
r.HandleFunc("/vol/vacuum", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeVacuumHandler)))
|
|
|
|
r.HandleFunc("/submit", ms.guard.WhiteList(ms.submitFromMasterServerHandler))
|
|
|
|
r.HandleFunc("/delete", ms.guard.WhiteList(ms.deleteFromMasterServerHandler))
|
2014-04-14 07:28:48 +00:00
|
|
|
r.HandleFunc("/{fileId}", ms.redirectHandler)
|
2015-02-07 23:35:28 +00:00
|
|
|
r.HandleFunc("/stats/counter", ms.guard.WhiteList(statsCounterHandler))
|
|
|
|
r.HandleFunc("/stats/memory", ms.guard.WhiteList(statsMemoryHandler))
|
2013-12-02 09:37:36 +00:00
|
|
|
|
2014-03-16 06:03:49 +00:00
|
|
|
ms.Topo.StartRefreshWritableVolumes(garbageThreshold)
|
2013-12-02 09:37:36 +00:00
|
|
|
|
|
|
|
return ms
|
|
|
|
}
|
2014-02-05 09:54:52 +00:00
|
|
|
|
|
|
|
func (ms *MasterServer) SetRaftServer(raftServer *RaftServer) {
|
2014-03-16 06:03:49 +00:00
|
|
|
ms.Topo.RaftServer = raftServer.raftServer
|
|
|
|
ms.Topo.RaftServer.AddEventListener(raft.LeaderChangeEventType, func(e raft.Event) {
|
2014-04-11 23:23:58 +00:00
|
|
|
if ms.Topo.RaftServer.Leader() != "" {
|
|
|
|
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", ms.Topo.RaftServer.Leader(), "becomes leader.")
|
|
|
|
}
|
2014-02-10 07:37:29 +00:00
|
|
|
})
|
2014-03-16 06:03:49 +00:00
|
|
|
if ms.Topo.IsLeader() {
|
|
|
|
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", "I am the leader!")
|
2014-02-10 07:37:29 +00:00
|
|
|
} else {
|
2014-04-11 23:23:58 +00:00
|
|
|
if ms.Topo.RaftServer.Leader() != "" {
|
|
|
|
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", ms.Topo.RaftServer.Leader(), "is the leader.")
|
|
|
|
}
|
2014-02-10 07:37:29 +00:00
|
|
|
}
|
2014-02-05 09:54:52 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
func (ms *MasterServer) proxyToLeader(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
|
|
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
2014-03-16 06:03:49 +00:00
|
|
|
if ms.Topo.IsLeader() {
|
2014-02-05 09:54:52 +00:00
|
|
|
f(w, r)
|
2014-04-17 06:43:27 +00:00
|
|
|
} else if ms.Topo.RaftServer != nil && ms.Topo.RaftServer.Leader() != "" {
|
2014-03-12 17:30:57 +00:00
|
|
|
ms.bounedLeaderChan <- 1
|
|
|
|
defer func() { <-ms.bounedLeaderChan }()
|
2014-03-16 06:03:49 +00:00
|
|
|
targetUrl, err := url.Parse("http://" + ms.Topo.RaftServer.Leader())
|
2014-04-13 08:29:52 +00:00
|
|
|
if err != nil {
|
2015-01-08 08:19:32 +00:00
|
|
|
writeJsonError(w, r, http.StatusInternalServerError,
|
|
|
|
fmt.Errorf("Leader URL http://%s Parse Error: %v", ms.Topo.RaftServer.Leader(), err))
|
2014-02-05 09:54:52 +00:00
|
|
|
return
|
|
|
|
}
|
2014-03-16 06:03:49 +00:00
|
|
|
glog.V(4).Infoln("proxying to leader", ms.Topo.RaftServer.Leader())
|
2014-02-05 09:54:52 +00:00
|
|
|
proxy := httputil.NewSingleHostReverseProxy(targetUrl)
|
2014-03-12 17:30:57 +00:00
|
|
|
proxy.Transport = util.Transport
|
2014-02-05 09:54:52 +00:00
|
|
|
proxy.ServeHTTP(w, r)
|
2014-04-13 08:29:52 +00:00
|
|
|
} else {
|
|
|
|
//drop it to the floor
|
2014-05-27 00:34:54 +00:00
|
|
|
//writeJsonError(w, r, errors.New(ms.Topo.RaftServer.Name()+" does not know Leader yet:"+ms.Topo.RaftServer.Leader()))
|
2014-02-05 09:54:52 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|