func (a *App) NodeSetState(w http.ResponseWriter, r *http.Request) {
// Get the id from the URL
vars := mux.Vars(r)
id := vars["id"]
// Unmarshal JSON
var msg api.StateRequest
err := utils.GetJsonFromRequest(r, &msg)
if err != nil {
http.Error(w, "request unable to be parsed", 422)
return
}
// Check state is supported
err = a.db.Update(func(tx *bolt.Tx) error {
node, err := NewNodeEntryFromId(tx, id)
if err == ErrNotFound {
http.Error(w, "Id not found", http.StatusNotFound)
return err
} else if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
// Set state
err = node.SetState(tx, a.allocator, msg.State)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return err
}
// Save new state
err = node.Save(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
return nil
})
if err != nil {
return
}
}
func (a *App) VolumeCreate(w http.ResponseWriter, r *http.Request) {
var msg api.VolumeCreateRequest
err := utils.GetJsonFromRequest(r, &msg)
if err != nil {
http.Error(w, "request unable to be parsed", 422)
return
}
// Check durability type
switch msg.Durability.Type {
case api.DurabilityEC:
case api.DurabilityReplicate:
case api.DurabilityDistributeOnly:
case "":
msg.Durability.Type = api.DurabilityDistributeOnly
default:
http.Error(w, "Unknown durability type", http.StatusBadRequest)
return
}
// Check the message has devices
if msg.Size < 1 {
http.Error(w, "Invalid volume size", http.StatusBadRequest)
return
}
if msg.Snapshot.Enable {
if msg.Snapshot.Factor < 1 || msg.Snapshot.Factor > VOLUME_CREATE_MAX_SNAPSHOT_FACTOR {
http.Error(w, "Invalid snapshot factor", http.StatusBadRequest)
return
}
}
// Check replica values
if msg.Durability.Type == api.DurabilityReplicate {
if msg.Durability.Replicate.Replica > 3 {
http.Error(w, "Invalid replica value", http.StatusBadRequest)
return
}
}
// Check Disperse combinations
if msg.Durability.Type == api.DurabilityEC {
d := msg.Durability.Disperse
// Place here correct combinations
switch {
case d.Data == 4 && d.Redundancy == 2:
case d.Data == 8 && d.Redundancy == 3:
case d.Data == 8 && d.Redundancy == 4:
default:
http.Error(w,
fmt.Sprintf("Invalid dispersion combination: %v+%v", d.Data, d.Redundancy),
http.StatusBadRequest)
return
}
}
// Check that the clusters requested are avilable
err = a.db.View(func(tx *bolt.Tx) error {
// Check we have clusters
// :TODO: All we need to do is check for one instead of gathering all keys
clusters, err := ClusterList(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
if len(clusters) == 0 {
http.Error(w, fmt.Sprintf("No clusters configured"), http.StatusBadRequest)
return ErrNotFound
}
// Check the clusters requested are correct
for _, clusterid := range msg.Clusters {
_, err := NewClusterEntryFromId(tx, clusterid)
if err != nil {
http.Error(w, fmt.Sprintf("Cluster id %v not found", clusterid), http.StatusBadRequest)
return err
}
}
return nil
})
if err != nil {
return
}
// Create a volume entry
vol := NewVolumeEntryFromRequest(&msg)
// Add device in an asynchronous function
a.asyncManager.AsyncHttpRedirectFunc(w, r, func() (string, error) {
logger.Info("Creating volume %v", vol.Info.Id)
err := vol.Create(a.db, a.executor, a.allocator)
if err != nil {
logger.LogError("Failed to create volume: %v", err)
return "", err
}
logger.Info("Created volume %v", vol.Info.Id)
// Done
return "/volumes/" + vol.Info.Id, nil
})
}
func (a *App) VolumeExpand(w http.ResponseWriter, r *http.Request) {
logger.Debug("In VolumeExpand")
// Get the id from the URL
vars := mux.Vars(r)
id := vars["id"]
var msg api.VolumeExpandRequest
err := utils.GetJsonFromRequest(r, &msg)
if err != nil {
http.Error(w, "request unable to be parsed", 422)
return
}
logger.Debug("Msg: %v", msg)
// Check the message
if msg.Size < 1 {
http.Error(w, "Invalid volume size", http.StatusBadRequest)
return
}
logger.Debug("Size: %v", msg.Size)
// Get volume entry
var volume *VolumeEntry
err = a.db.View(func(tx *bolt.Tx) error {
// Access volume entry
var err error
volume, err = NewVolumeEntryFromId(tx, id)
if err == ErrNotFound {
http.Error(w, err.Error(), http.StatusNotFound)
return err
} else if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
return nil
})
if err != nil {
return
}
// Expand device in an asynchronous function
a.asyncManager.AsyncHttpRedirectFunc(w, r, func() (string, error) {
logger.Info("Expanding volume %v", volume.Info.Id)
err := volume.Expand(a.db, a.executor, a.allocator, msg.Size)
if err != nil {
logger.LogError("Failed to expand volume %v", volume.Info.Id)
return "", err
}
logger.Info("Expanded volume %v", volume.Info.Id)
// Done
return "/volumes/" + volume.Info.Id, nil
})
}
func (a *App) NodeAdd(w http.ResponseWriter, r *http.Request) {
var msg api.NodeAddRequest
err := utils.GetJsonFromRequest(r, &msg)
if err != nil {
http.Error(w, "request unable to be parsed", 422)
return
}
// Check information in JSON request
if len(msg.Hostnames.Manage) == 0 {
http.Error(w, "Manage hostname missing", http.StatusBadRequest)
return
}
if len(msg.Hostnames.Storage) == 0 {
http.Error(w, "Storage hostname missing", http.StatusBadRequest)
return
}
// Zone value of 0 is not allowed because we do not know
// if it is because it was set to zero, or it is the default
// value used for missing 'zone' in JSON
if msg.Zone == 0 {
http.Error(w, "Zone cannot be zero or value is missing", http.StatusBadRequest)
return
}
// Check for correct values
for _, name := range append(msg.Hostnames.Manage, msg.Hostnames.Storage...) {
if name == "" {
http.Error(w, "Hostname cannot be an empty string", http.StatusBadRequest)
return
}
}
// Create a node entry
node := NewNodeEntryFromRequest(&msg)
// Get cluster and peer node
var cluster *ClusterEntry
var peer_node *NodeEntry
err = a.db.Update(func(tx *bolt.Tx) error {
var err error
cluster, err = NewClusterEntryFromId(tx, msg.ClusterId)
if err == ErrNotFound {
http.Error(w, "Cluster id does not exist", http.StatusNotFound)
return err
} else if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
// Register node
err = node.Register(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusConflict)
return err
}
// Get a node in the cluster to execute the Gluster peer command
// only if there is more than one node
if len(cluster.Info.Nodes) > 0 {
peer_node, err = cluster.NodeEntryFromClusterIndex(tx, 0)
if err != nil {
logger.Err(err)
return err
}
}
return nil
})
if err != nil {
return
}
// Add node
logger.Info("Adding node %v", node.ManageHostName())
a.asyncManager.AsyncHttpRedirectFunc(w, r, func() (seeother string, e error) {
// Cleanup in case of failure
defer func() {
if e != nil {
a.db.Update(func(tx *bolt.Tx) error {
node.Deregister(tx)
return nil
})
}
}()
// Peer probe if there is at least one other node
// TODO: What happens if the peer_node is not responding.. we need to choose another.
if peer_node != nil {
err := a.executor.PeerProbe(peer_node.ManageHostName(), node.StorageHostName())
if err != nil {
return "", err
}
}
// Add node entry into the db
err = a.db.Update(func(tx *bolt.Tx) error {
cluster, err := NewClusterEntryFromId(tx, msg.ClusterId)
if err == ErrNotFound {
http.Error(w, "Cluster id does not exist", http.StatusNotFound)
return err
} else if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
// Add node to cluster
cluster.NodeAdd(node.Info.Id)
// Save cluster
err = cluster.Save(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
// Save node
err = node.Save(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
return nil
})
if err != nil {
return "", err
}
logger.Info("Added node " + node.Info.Id)
return "/nodes/" + node.Info.Id, nil
})
}
func (a *App) DeviceAdd(w http.ResponseWriter, r *http.Request) {
var msg api.DeviceAddRequest
err := utils.GetJsonFromRequest(r, &msg)
if err != nil {
http.Error(w, "request unable to be parsed", 422)
return
}
// Check the message has devices
if msg.Name == "" {
http.Error(w, "no devices added", http.StatusBadRequest)
return
}
// Create device entry
device := NewDeviceEntryFromRequest(&msg)
// Check the node is in the db
var node *NodeEntry
err = a.db.Update(func(tx *bolt.Tx) error {
var err error
node, err = NewNodeEntryFromId(tx, msg.NodeId)
if err == ErrNotFound {
http.Error(w, "Node id does not exist", http.StatusNotFound)
return err
} else if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
// Register device
err = device.Register(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusConflict)
return err
}
return nil
})
if err != nil {
return
}
// Log the devices are being added
logger.Info("Adding device %v to node %v", msg.Name, msg.NodeId)
// Add device in an asynchronous function
a.asyncManager.AsyncHttpRedirectFunc(w, r, func() (seeOtherUrl string, e error) {
defer func() {
if e != nil {
a.db.Update(func(tx *bolt.Tx) error {
err := device.Deregister(tx)
if err != nil {
logger.Err(err)
return err
}
return nil
})
}
}()
// Setup device on node
info, err := a.executor.DeviceSetup(node.ManageHostName(),
device.Info.Name, device.Info.Id)
if err != nil {
return "", err
}
// Create an entry for the device and set the size
device.StorageSet(info.Size)
device.SetExtentSize(info.ExtentSize)
// Setup garbage collector on error
defer func() {
if e != nil {
a.executor.DeviceTeardown(node.ManageHostName(),
device.Info.Name,
device.Info.Id)
}
}()
// Save on db
err = a.db.Update(func(tx *bolt.Tx) error {
nodeEntry, err := NewNodeEntryFromId(tx, msg.NodeId)
if err != nil {
return err
}
// Add device to node
nodeEntry.DeviceAdd(device.Info.Id)
clusterEntry, err := NewClusterEntryFromId(tx, nodeEntry.Info.ClusterId)
if err != nil {
return err
}
// Commit
err = nodeEntry.Save(tx)
if err != nil {
return err
}
// Save drive
err = device.Save(tx)
if err != nil {
return err
}
// Add to allocator
err = a.allocator.AddDevice(clusterEntry, nodeEntry, device)
if err != nil {
return err
}
return nil
})
if err != nil {
return "", err
}
logger.Info("Added device %v", msg.Name)
// Done
// Returning a null string instructs the async manager
// to return http status of 204 (No Content)
return "", nil
})
}