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app_cluster.go
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/
app_cluster.go
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//
// Copyright (c) 2015 The heketi Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package glusterfs
import (
"encoding/json"
"net/http"
"github.com/boltdb/bolt"
"github.com/gorilla/mux"
"github.com/heketi/heketi/pkg/glusterfs/api"
)
func (a *App) ClusterCreate(w http.ResponseWriter, r *http.Request) {
// Create a new ClusterInfo
entry := NewClusterEntryFromRequest()
// Add cluster to db
err := a.db.Update(func(tx *bolt.Tx) error {
err := entry.Save(tx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return err
}
return nil
})
if err != nil {
return
}
// Send back we created it (as long as we did not fail)
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
w.WriteHeader(http.StatusCreated)
if err := json.NewEncoder(w).Encode(entry.Info); err != nil {
panic(err)
}
}
func (a *App) ClusterList(w http.ResponseWriter, r *http.Request) {
var list api.ClusterListResponse
// Get all the cluster ids from the DB
err := a.db.View(func(tx *bolt.Tx) error {
var err error
list.Clusters, err = ClusterList(tx)
if err != nil {
return err
}
return nil
})
if err != nil {
logger.Err(err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Send list back
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
w.WriteHeader(http.StatusOK)
if err := json.NewEncoder(w).Encode(list); err != nil {
panic(err)
}
}
func (a *App) ClusterInfo(w http.ResponseWriter, r *http.Request) {
// Get the id from the URL
vars := mux.Vars(r)
id := vars["id"]
// Get info from db
var info *api.ClusterInfoResponse
err := a.db.View(func(tx *bolt.Tx) error {
// Create a db entry from the id
entry, err := NewClusterEntryFromId(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
}
// Create a response from the db entry
info, err = entry.NewClusterInfoResponse(tx)
if err != nil {
return err
}
return nil
})
if err != nil {
return
}
// Write msg
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
w.WriteHeader(http.StatusOK)
if err := json.NewEncoder(w).Encode(info); err != nil {
panic(err)
}
}
func (a *App) ClusterDelete(w http.ResponseWriter, r *http.Request) {
// Get the id from the URL
vars := mux.Vars(r)
id := vars["id"]
// Delete cluster from db
err := a.db.Update(func(tx *bolt.Tx) error {
// Access cluster entry
entry, err := NewClusterEntryFromId(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 logger.Err(err)
}
err = entry.Delete(tx)
if err != nil {
if err == ErrConflict {
http.Error(w, entry.ConflictString(), http.StatusConflict)
} else {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
return err
}
return nil
})
if err != nil {
return
}
// Update allocator hat the cluster has been removed
a.allocator.RemoveCluster(id)
// Show that the key has been deleted
logger.Info("Deleted cluster [%s]", id)
// Write msg
w.WriteHeader(http.StatusOK)
}