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/*
* Copyright 2020 Intel Corporation, Inc
*
* 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 api
import (
"encoding/json"
"io"
"net/http"
"github.com/gorilla/mux"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/validation"
moduleLib "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
pkgerrors "github.com/pkg/errors"
)
// Used to store backend implementations objects
// Also simplifies mocking for unit testing purposes
type controllerHandler struct {
// Interface that implements controller operations
// We will set this variable with a mock interface for testing
client moduleLib.ControllerManager
}
// Check for valid format of input parameters
func validateControllerInputs(c moduleLib.Controller) error {
// validate metadata
err := moduleLib.IsValidMetadata(c.Metadata)
if err != nil {
return pkgerrors.Wrap(err, "Invalid controller metadata")
}
errs := validation.IsValidName(c.Spec.Host)
if len(errs) > 0 {
return pkgerrors.Errorf("Invalid host name for controller %v, errors: %v", c.Spec.Host, errs)
}
errs = validation.IsValidNumber(c.Spec.Port, 0, 65535)
if len(errs) > 0 {
return pkgerrors.Errorf("Invalid controller port [%v], errors: %v", c.Spec.Port, errs)
}
found := false
for _, val := range moduleLib.CONTROLLER_TYPES {
if c.Spec.Type == val {
found = true
break
}
}
if !found {
return pkgerrors.Errorf("Invalid controller type: %v", c.Spec.Type)
}
errs = validation.IsValidNumber(c.Spec.Priority, moduleLib.MinControllerPriority, moduleLib.MaxControllerPriority)
if len(errs) > 0 {
return pkgerrors.Errorf("Invalid controller priority = [%v], errors: %v", c.Spec.Priority, errs)
}
return nil
}
// Create handles creation of the controller entry in the database
func (h controllerHandler) createHandler(w http.ResponseWriter, r *http.Request) {
var m moduleLib.Controller
err := json.NewDecoder(r.Body).Decode(&m)
switch {
case err == io.EOF:
http.Error(w, "Empty body", http.StatusBadRequest)
return
case err != nil:
http.Error(w, err.Error(), http.StatusUnprocessableEntity)
return
}
// Name is required.
if m.Metadata.Name == "" {
http.Error(w, "Missing name in POST request", http.StatusBadRequest)
return
}
ret, err := h.client.CreateController(m, false)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusCreated)
err = json.NewEncoder(w).Encode(ret)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// Put handles creation or update of the controller entry in the database
func (h controllerHandler) putHandler(w http.ResponseWriter, r *http.Request) {
var m moduleLib.Controller
vars := mux.Vars(r)
name := vars["controller-name"]
err := json.NewDecoder(r.Body).Decode(&m)
switch {
case err == io.EOF:
http.Error(w, "Empty body", http.StatusBadRequest)
return
case err != nil:
http.Error(w, err.Error(), http.StatusUnprocessableEntity)
return
}
// Name is required.
if m.Metadata.Name == "" {
http.Error(w, "Missing name in POST request", http.StatusBadRequest)
return
}
// name in URL should match name in body
if m.Metadata.Name != name {
http.Error(w, "Mismatched name in PUT request", http.StatusBadRequest)
return
}
ret, err := h.client.CreateController(m, true)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusCreated)
err = json.NewEncoder(w).Encode(ret)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// Get handles GET operations on a particular controller Name
// Returns a controller
func (h controllerHandler) getHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
name := vars["controller-name"]
var ret interface{}
var err error
// handle the get all controllers case
if len(name) == 0 {
ret, err = h.client.GetControllers()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
} else {
ret, err = h.client.GetController(name)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
err = json.NewEncoder(w).Encode(ret)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// Delete handles DELETE operations on a particular controller Name
func (h controllerHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
name := vars["controller-name"]
err := h.client.DeleteController(name)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
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