func (srv *server) handleInstanceByIDTerminate(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
err := srv.i.Terminate(context.TODO(), vars["id"])
if err != nil {
switch err.(type) {
case jupiterbrain.VirtualMachineNotFoundError:
jsonapi.Error(w, err, http.StatusNotFound)
return
default:
srv.log.WithFields(logrus.Fields{
"err": err,
"id": vars["id"],
}).Error("failed to terminate instance")
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
}
err = srv.db.DestroyInstance(vars["id"])
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
func (srv *server) handleInstanceByIDFetch(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
instance, err := srv.i.Fetch(context.TODO(), vars["id"])
if err != nil {
switch err.(type) {
case jupiterbrain.VirtualMachineNotFoundError:
jsonapi.Error(w, err, http.StatusNotFound)
return
default:
srv.log.WithFields(logrus.Fields{
"err": err,
"id": vars["id"],
}).Error("failed to fetch instance")
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
}
response := map[string][]interface{}{
"data": {MarshalInstance(instance)},
}
b, err := json.MarshalIndent(response, "", " ")
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.api+json")
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, string(b)+"\n")
}
func (srv *server) authMiddleware(w http.ResponseWriter, req *http.Request, f http.HandlerFunc) {
authHeader := req.Header.Get("Authorization")
srv.log.WithField("authorization", authHeader).Debug("raw authorization header")
if authHeader == "" {
w.Header().Set("WWW-Authenticate", "token")
srv.log.WithField("request_id", req.Header.Get("X-Request-ID")).Debug("responding 401 due to empty Authorization header")
jsonapi.Error(w, errors.New("token is required"), http.StatusUnauthorized)
return
}
if authHeader != ("token "+srv.authToken) && authHeader != ("token="+srv.authToken) {
jsonapi.Error(w, errors.New("incorrect token"), http.StatusUnauthorized)
return
}
f(w, req)
}
func (srv *server) handleInstanceSync(w http.ResponseWriter, req *http.Request) {
instances, err := srv.i.List(context.TODO())
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
for _, instance := range instances {
instance.CreatedAt = time.Now().UTC()
err = srv.db.SaveInstance(instance)
if err != nil {
srv.log.WithFields(logrus.Fields{
"err": err,
"id": instance.ID,
}).Warn("failed to save instance")
continue
}
srv.log.WithField("id", instance.ID).Debug("synced instance")
}
w.WriteHeader(http.StatusNoContent)
}
func (srv *server) handleInstancesCreate(w http.ResponseWriter, req *http.Request) {
var requestBody map[string]map[string]string
err := json.NewDecoder(req.Body).Decode(&requestBody)
if err != nil {
jsonapi.Error(w, err, http.StatusBadRequest)
return
}
if requestBody["data"] == nil {
jsonapi.Error(w, &jsonapi.JSONError{Status: "422", Code: "missing-field", Title: "root object must have data field"}, 422)
return
}
if requestBody["data"]["type"] != "instances" {
jsonapi.Error(w, &jsonapi.JSONError{Status: "409", Code: "incorrect-type", Title: "data must be of type instances"}, http.StatusConflict)
return
}
if requestBody["data"]["base-image"] == "" {
jsonapi.Error(w, &jsonapi.JSONError{Status: "422", Code: "missing-field", Title: "instance must have base-image field"}, 422)
return
}
instance, err := srv.i.Start(context.TODO(), requestBody["data"]["base-image"])
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
recoverDelete := false
defer func() {
if recoverDelete && instance != nil {
go func() { _ = srv.i.Terminate(context.TODO(), instance.ID) }()
}
}()
instance.CreatedAt = time.Now().UTC()
err = srv.db.SaveInstance(instance)
if err != nil {
recoverDelete = true
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
response := map[string][]interface{}{
"data": {MarshalInstance(instance)},
}
b, err := json.MarshalIndent(response, "", " ")
if err != nil {
recoverDelete = true
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.api+json")
w.Header().Set("Location", fmt.Sprintf("/instances/%s", instance.ID))
w.WriteHeader(http.StatusCreated)
fmt.Fprintf(w, string(b)+"\n")
}
func (srv *server) handleInstancesList(w http.ResponseWriter, req *http.Request) {
instances, err := srv.i.List(context.TODO())
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
dbInstanceIDs := []string{}
dbInstanceIDCreatedMap := map[string]time.Time{}
applyDBFilter := false
if req.FormValue("min_age") != "" {
dur, err := time.ParseDuration(req.FormValue("min_age"))
if err != nil {
jsonapi.Error(w, err, http.StatusBadRequest)
return
}
res, err := srv.db.FetchInstances(&databaseQuery{MinAge: dur})
if err != nil {
jsonapi.Error(w, err, http.StatusBadRequest)
return
}
srv.log.WithFields(logrus.Fields{
"n": len(res),
}).Debug("retrieved instances from database")
for _, r := range res {
dbInstanceIDCreatedMap[r.ID] = r.CreatedAt
dbInstanceIDs = append(dbInstanceIDs, r.ID)
}
applyDBFilter = true
}
response := map[string][]interface{}{
"data": make([]interface{}, 0),
}
if applyDBFilter {
keptInstances := []*jupiterbrain.Instance{}
for _, instance := range instances {
for _, instID := range dbInstanceIDs {
if instID == instance.ID {
instance.CreatedAt = dbInstanceIDCreatedMap[instID]
keptInstances = append(keptInstances, instance)
}
}
}
srv.log.WithFields(logrus.Fields{
"pre_filter": len(instances),
"post_filter": len(keptInstances),
}).Debug("applying known instance filter")
instances = keptInstances
}
for _, instance := range instances {
response["data"] = append(response["data"], MarshalInstance(instance))
}
b, err := json.MarshalIndent(response, "", " ")
if err != nil {
jsonapi.Error(w, err, http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.api+json")
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, string(b)+"\n")
}