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/*
Copyright 2018 Intel Corporation.
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"
"log"
"net/http"
"k8splugin/internal/app"
"k8splugin/internal/helm"
"github.com/gorilla/mux"
)
// Used to store the backend implementation objects
// Also simplifies the mocking needed for unit testing
type brokerInstanceHandler struct {
// Interface that implements the Instance operations
client app.InstanceManager
}
type brokerRequest struct {
GenericVnfID string `json:"generic-vnf-id"`
VFModuleID string `json:"vf-module-id"`
VFModuleModelInvariantID string `json:"vf-module-model-invariant-id"`
VFModuleModelVersionID string `json:"vf-module-model-version-id"`
VFModuleModelCustomizationID string `json:"vf-module-model-customization-id"`
OOFDirectives map[string]interface{} `json:"oof_directives"`
SDNCDirections map[string]interface{} `json:"sdnc_directives"`
UserDirectives map[string]interface{} `json:"user_directives"`
TemplateType string `json:"template_type"`
TemplateData map[string]interface{} `json:"template_data"`
}
type brokerPOSTResponse struct {
TemplateType string `json:"template_type"`
WorkloadID string `json:"workload_id"`
TemplateResponse []helm.KubernetesResource `json:"template_response"`
}
type brokerGETResponse struct {
TemplateType string `json:"template_type"`
WorkloadID string `json:"workload_id"`
WorkloadStatus string `json:"workload_status"`
}
// getUserDirectiveValue parses the following kind of json
// "user_attributes": {
// "attributes": [
// {
// "attribute_value": "foo",
// "attribute_name": "bar"
// },
// {
// "attribute_value": "value2",
// "attribute_name": "name2"
// }
// ]
// }
func (b brokerRequest) getUserDirectiveValue(inp string) string {
attributes, ok := b.UserDirectives["attributes"].([]interface{})
if !ok {
log.Println("Unable to cast attributes to []interface{}")
return ""
}
for _, value := range attributes {
attribute, ok := value.(map[string]interface{})
if !ok {
log.Println("Unable to cast attribute to map[string]interface{}")
return ""
}
attributename, ok := attribute["attribute_name"].(string)
if !ok {
log.Println("Unable to cast attribute_name to string")
return ""
}
if attributename == inp {
attributevalue, ok := attribute["attribute_value"].(string)
if !ok {
log.Println("Unable to cast attribute_value to string")
return ""
}
return attributevalue
}
}
return ""
}
func (b brokerInstanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
cloudRegion := vars["cloud-region"]
var req brokerRequest
err := json.NewDecoder(r.Body).Decode(&req)
switch {
case err == io.EOF:
http.Error(w, "Body empty", http.StatusBadRequest)
return
case err != nil:
http.Error(w, err.Error(), http.StatusUnprocessableEntity)
return
}
// Check body for expected parameters
if req.VFModuleModelCustomizationID == "" {
http.Error(w, "vf-module-model-customization-id is empty", http.StatusBadRequest)
return
}
rbName := req.getUserDirectiveValue("definition-name")
if rbName == "" {
http.Error(w, "definition-name is missing from user-directives", http.StatusBadRequest)
return
}
rbVersion := req.getUserDirectiveValue("definition-version")
if rbVersion == "" {
http.Error(w, "definition-version is missing from user-directives", http.StatusBadRequest)
return
}
profileName := req.getUserDirectiveValue("profile-name")
if profileName == "" {
http.Error(w, "profile-name is missing from user-directives", http.StatusBadRequest)
return
}
// Setup the resource parameters for making the request
var instReq app.InstanceRequest
instReq.RBName = rbName
instReq.RBVersion = rbVersion
instReq.ProfileName = profileName
instReq.CloudRegion = cloudRegion
resp, err := b.client.Create(instReq)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
brokerResp := brokerPOSTResponse{
TemplateType: "heat",
WorkloadID: resp.ID,
TemplateResponse: resp.Resources,
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusCreated)
err = json.NewEncoder(w).Encode(brokerResp)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// getHandler retrieves information about an instance via the ID
func (b brokerInstanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
instanceID := vars["instID"]
resp, err := b.client.Get(instanceID)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
brokerResp := brokerGETResponse{
TemplateType: "heat",
WorkloadID: resp.ID,
WorkloadStatus: "CREATED",
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
err = json.NewEncoder(w).Encode(brokerResp)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// deleteHandler method terminates an instance via the ID
func (b brokerInstanceHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
instanceID := vars["instID"]
err := b.client.Delete(instanceID)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusAccepted)
}
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