func volumeStartHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
log.Info("In Volume start API")
vol, e := volume.GetVolume(volname)
if e != nil {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrVolNotFound.Error())
return
}
if vol.Status == volume.VolStarted {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrVolAlreadyStarted.Error())
return
}
vol.Status = volume.VolStarted
e = volume.AddOrUpdateVolumeFunc(vol)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
log.WithField("volume", vol.Name).Debug("Volume updated into the store")
rest.SendHTTPResponse(w, http.StatusOK, vol)
}
func volumeCreateHandler(w http.ResponseWriter, r *http.Request) {
msg := new(volume.VolCreateRequest)
httpStatusCode, e := validateVolumeCreateJSONRequest(msg, r)
if e != nil {
rest.SendHTTPError(w, httpStatusCode, e.Error())
return
}
vol, e := createVolume(msg)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
httpStatusCode, e = validateVolumeCreate(msg, vol)
if e != nil {
rest.SendHTTPError(w, httpStatusCode, e.Error())
return
}
httpStatusCode, e = commitVolumeCreate(vol)
if e != nil {
rollBackVolumeCreate(vol)
rest.SendHTTPError(w, httpStatusCode, e.Error())
return
}
rest.SendHTTPResponse(w, http.StatusCreated, vol)
}
func volumeStartHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
log.Info("In Volume start API")
vol, e := volume.GetVolume(volname)
if e != nil {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrVolNotFound.Error())
return
}
if vol.Status == volume.VolStarted {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrVolAlreadyStarted.Error())
return
}
// A simple one-step transaction to start the brick processes
txn := transaction.NewTxn()
defer txn.Cleanup()
lock, unlock, err := transaction.CreateLockSteps(volname)
if err != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, err.Error())
return
}
txn.Nodes = vol.Nodes()
txn.Steps = []*transaction.Step{
lock,
&transaction.Step{
DoFunc: "vol-start.Commit",
UndoFunc: "vol-start.Undo",
Nodes: txn.Nodes,
},
unlock,
}
txn.Ctx.Set("volname", volname)
_, e = txn.Do()
if e != nil {
log.WithFields(log.Fields{
"error": e.Error(),
"volume": volname,
}).Error("failed to start volume")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
vol.Status = volume.VolStarted
e = volume.AddOrUpdateVolumeFunc(vol)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
log.WithField("volume", vol.Name).Debug("Volume updated into the store")
rest.SendHTTPResponse(w, http.StatusOK, vol)
}
func volumeStatusHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
// Ensure that the volume exists.
vol, err := volume.GetVolume(volname)
if err != nil {
rest.SendHTTPError(w, http.StatusNotFound, errors.ErrVolNotFound.Error())
}
// A very simple free-form transaction to query each node for brick
// status. Fetching volume status does not modify state/data on the
// remote node. So there's no need for locks.
txn := transaction.NewTxn()
defer txn.Cleanup()
txn.Nodes = vol.Nodes()
txn.Steps = []*transaction.Step{
&transaction.Step{
DoFunc: "vol-status.Check",
Nodes: txn.Nodes,
},
}
// The remote nodes get args it needs from the transaction context.
txn.Ctx.Set("volname", volname)
// As all key-value pairs stored in transaction context ends up in etcd
// store, using either the old txn context reference or the one
// returned by txn.Do() is one and the same. The transaction context is
// a way for the nodes store the results of the step runs.
rtxn, err := txn.Do()
if err != nil {
log.WithFields(log.Fields{
"error": err.Error(),
"volume": volname,
}).Error("volumeStatusHandler: Failed to get volume status.")
rest.SendHTTPError(w, http.StatusInternalServerError, err.Error())
return
}
// Example of how an aggregate function will make sense from results of
// run of a step on multiple nodes. The transaction context will have
// results from each node, seggregated by the node's UUID.
result, err := aggregateVolumeStatus(rtxn, txn.Nodes)
if err != nil {
errMsg := "Failed to aggregate brick status results from multiple nodes."
log.WithField("error", err.Error()).Error("volumeStatusHandler:" + errMsg)
rest.SendHTTPError(w, http.StatusInternalServerError, errMsg)
return
}
// Send aggregated result back to the client.
rest.SendHTTPResponse(w, http.StatusOK, result)
}
func getPeerHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
id := p["peerid"]
if id == "" {
rest.SendHTTPError(w, http.StatusBadRequest, "peerid not present in request")
return
}
if peer, err := peer.GetPeerF(id); err != nil {
rest.SendHTTPError(w, http.StatusNotFound, err.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, peer)
}
}
func getPeersHandler(w http.ResponseWriter, r *http.Request) {
if peers, err := peer.GetPeers(); err != nil {
rest.SendHTTPError(w, http.StatusNotFound, err.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, peers)
}
}
func deletePeerHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
id := p["peerid"]
if id == "" {
rest.SendHTTPError(w, http.StatusBadRequest, "peerid not present in the request")
return
}
if !peer.Exists(id) {
rest.SendHTTPError(w, http.StatusNotFound, "peer not found in cluster")
return
}
if e := peer.DeletePeer(id); e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
} else {
rest.SendHTTPResponse(w, http.StatusNoContent, nil)
}
}
func volumeDeleteHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
log.Info("In Volume delete API")
if !volume.Exists(volname) {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrVolNotFound.Error())
return
}
e := volume.DeleteVolume(volname)
if e != nil {
log.WithFields(log.Fields{"error": e.Error(),
"volume": volname,
}).Error("Failed to delete the volume")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
rest.SendHTTPResponse(w, http.StatusOK, nil)
}
func volumeListHandler(w http.ResponseWriter, r *http.Request) {
log.Info("In Volume list API")
volumes, e := volume.GetVolumesList()
if e != nil {
rest.SendHTTPError(w, http.StatusNotFound, e.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, volumes)
}
}
func addPeerHandler(w http.ResponseWriter, r *http.Request) {
var req peer.PeerAddRequest
if e := utils.GetJSONFromRequest(r, &req); e != nil {
rest.SendHTTPError(w, http.StatusBadRequest, e.Error())
return
}
if len(req.Addresses) < 1 {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrNoHostnamesPresent.Error())
return
}
if req.Name == "" {
req.Name = req.Addresses[0]
}
//TODO: Do proper validation before initiating the add process
//FIXME: In the correct add process, the peer being probed would add it's details to the store once it's been validated. The code below is just a temporary stand-in to show how the API's would work
p := &peer.Peer{
ID: uuid.NewRandom(),
Name: req.Name,
Addresses: req.Addresses,
}
rsp, e := client.ValidateAddPeer(&req)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, *rsp.OpError)
return
}
if e = peer.AddOrUpdatePeer(p); e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
rest.SendHTTPResponse(w, http.StatusOK, nil)
}
func volumeInfoHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
log.Debug("In Volume info API")
vol, e := volume.GetVolume(volname)
if e != nil {
rest.SendHTTPError(w, http.StatusNotFound, errors.ErrVolNotFound.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, vol)
}
}
func volumeListHandler(w http.ResponseWriter, r *http.Request) {
log.Info("In Volume list API")
// Simple read operations, which just read information from the store, need
// not use the transaction framework
volumes, e := volume.GetVolumesList()
if e != nil {
rest.SendHTTPError(w, http.StatusNotFound, e.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, volumes)
}
}
func volumeInfoHandler(w http.ResponseWriter, r *http.Request) {
p := mux.Vars(r)
volname := p["volname"]
log.Debug("In Volume info API")
// Simple read operations, which just read information from the store, need
// not use the transaction framework
vol, e := volume.GetVolume(volname)
if e != nil {
rest.SendHTTPError(w, http.StatusNotFound, errors.ErrVolNotFound.Error())
} else {
rest.SendHTTPResponse(w, http.StatusOK, vol)
}
}
func volumeCreateHandler(w http.ResponseWriter, r *http.Request) {
req := new(volume.VolCreateRequest)
httpStatus, e := unmarshalVolCreateRequest(req, r)
if e != nil {
rest.SendHTTPError(w, httpStatus, e.Error())
return
}
if volume.ExistsFunc(req.Name) {
rest.SendHTTPError(w, http.StatusInternalServerError, gderrors.ErrVolExists.Error())
return
}
nodes, e := nodesForVolCreate(req)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
txn, e := (&transaction.SimpleTxn{
Nodes: nodes,
LockKey: req.Name,
Stage: "vol-create.Stage",
Commit: "vol-create.Commit",
Store: "vol-create.Store",
Rollback: "vol-create.Rollback",
LogFields: &log.Fields{
"reqid": uuid.NewRandom().String(),
},
}).NewTxn()
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
defer txn.Cleanup()
e = txn.Ctx.Set("req", req)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
vol, e := createVolinfo(req)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
e = txn.Ctx.Set("volinfo", vol)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
c, e := txn.Do()
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
e = c.Get("volinfo", &vol)
if e == nil {
rest.SendHTTPResponse(w, http.StatusCreated, vol)
c.Logger().WithField("volname", vol.Name).Info("new volume created")
} else {
rest.SendHTTPError(w, http.StatusInternalServerError, "failed to get volinfo")
}
return
}
func addPeerHandler(w http.ResponseWriter, r *http.Request) {
// FIXME: This is not txn based, yet. Behaviour when multiple simultaneous
// add peer requests are sent to same node is unknown.
var req PeerAddReq
if e := utils.GetJSONFromRequest(r, &req); e != nil {
rest.SendHTTPError(w, http.StatusBadRequest, e.Error())
return
}
if len(req.Addresses) < 1 {
rest.SendHTTPError(w, http.StatusBadRequest, errors.ErrNoHostnamesPresent.Error())
return
}
// A peer can have multiple addresses. For now, we use only the first
// address present in the req.Addresses list.
remotePeerAddress, err := utils.FormRemotePeerAddress(req.Addresses[0])
if err != nil {
rest.SendHTTPError(w, http.StatusBadRequest, err.Error())
return
}
// This remote call will return the remote peer's ID (UUID), name
// and etcd peer url.
remotePeer, e := ValidateAddPeer(remotePeerAddress, &req)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, remotePeer.OpError)
return
}
// TODO: Parse addresses considering ports to figure this out.
if isPeerInCluster(remotePeer.UUID) {
rest.SendHTTPError(w, http.StatusInternalServerError, "Peer already in cluster")
return
}
// If user hasn't specified peer name, use the name returned by remote
// peer which defaults to it's hostname.
if req.Name == "" {
req.Name = remotePeer.PeerName
}
// Adding a member is a two step process:
// 1. Add the new member to the cluster via the members API. This is
// performed on this node i.e the one that just accepted peer add
// request from the user.
// 2. Start the new member on the target node (the new peer) with the new
// cluster configuration, including a list of the updated members
// (existing members + the new member).
newMember, e := etcdmgmt.EtcdMemberAdd("http://" + remotePeer.EtcdPeerAddress)
if e != nil {
log.WithFields(log.Fields{
"error": e,
"uuid": remotePeer.UUID,
"name": req.Name,
"address": remotePeer.EtcdPeerAddress,
}).Error("Failed to add member to etcd cluster.")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
log.WithField("member-id", newMember.ID).Info("Added new member to etcd cluster")
mlist, e := etcdmgmt.EtcdMemberList()
if e != nil {
log.WithField("error", e).Error("Failed to list members in etcd cluster")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
// Member name of the newly added etcd member has not been set at this point.
conf := []string{}
for _, memb := range mlist {
for _, u := range memb.PeerURLs {
n := memb.Name
if memb.ID == newMember.ID {
n = remotePeer.UUID
}
conf = append(conf, fmt.Sprintf("%s=%s", n, u))
}
}
var etcdConf EtcdConfigReq
etcdConf.EtcdName = remotePeer.UUID
etcdConf.InitialCluster = strings.Join(conf, ",")
etcdConf.ClusterState = "existing"
log.WithField("initial-cluster", etcdConf.InitialCluster).Debug("Reconfiguring etcd on remote peer")
etcdrsp, e := ConfigureRemoteETCD(remotePeerAddress, &etcdConf)
if e != nil {
log.WithField("err", e).Error("Failed to configure remote etcd")
rest.SendHTTPError(w, http.StatusInternalServerError, etcdrsp.OpError)
return
}
// Create a new peer object and add it to the store.
p := &peer.Peer{
ID: uuid.Parse(remotePeer.UUID),
Name: req.Name,
Addresses: req.Addresses,
MemberID: newMember.ID,
}
if e = peer.AddOrUpdatePeer(p); e != nil {
log.WithFields(log.Fields{
"error": e,
"peer/node": p.Name,
}).Error("Failed to add peer into the etcd store")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
body := map[string]uuid.UUID{"id": p.ID}
rest.SendHTTPResponse(w, http.StatusCreated, body)
}
func deletePeerHandler(w http.ResponseWriter, r *http.Request) {
// FIXME: This is not txn based, yet. Behaviour when multiple simultaneous
// delete peer requests are sent to same node is unknown.
peerReq := mux.Vars(r)
id := peerReq["peerid"]
if id == "" {
rest.SendHTTPError(w, http.StatusBadRequest, "peerid not present in the request")
return
}
// Check whether the member exists
p, e := peer.GetPeerF(id)
if e != nil || p == nil {
rest.SendHTTPError(w, http.StatusNotFound, "peer not found in cluster")
return
}
// Removing self should be disallowed (like in glusterd1)
if id == gdctx.MyUUID.String() {
rest.SendHTTPError(w, http.StatusBadRequest, "Removing self is disallowed.")
return
}
remotePeerAddress, err := utils.FormRemotePeerAddress(p.Addresses[0])
if err != nil {
rest.SendHTTPError(w, http.StatusBadRequest, err.Error())
return
}
// Validate whether the peer can be deleted
rsp, e := ValidateDeletePeer(remotePeerAddress, id)
if e != nil {
rest.SendHTTPError(w, http.StatusInternalServerError, rsp.OpError)
return
}
// Remove the peer from the store
if e := peer.DeletePeer(id); e != nil {
log.WithFields(log.Fields{
"er": e,
"peer": id,
}).Error("Failed to remove peer from the store")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
} else {
rest.SendHTTPResponse(w, http.StatusNoContent, nil)
}
// Delete member from etcd cluster
e = etcdmgmt.EtcdMemberRemove(p.MemberID)
if e != nil {
log.WithFields(log.Fields{
"er": e,
"peer": id,
}).Error("Failed to remove member from etcd cluster")
rest.SendHTTPError(w, http.StatusInternalServerError, e.Error())
return
}
// Remove data dir of etcd on remote machine. Restart etcd on remote machine
// in standalone (single cluster) mode.
var etcdConf EtcdConfigReq
etcdConf.DeletePeer = true
etcdrsp, e := ConfigureRemoteETCD(remotePeerAddress, &etcdConf)
if e != nil {
log.WithField("err", e).Error("Failed to configure remote etcd.")
rest.SendHTTPError(w, http.StatusInternalServerError, etcdrsp.OpError)
return
}
}