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-rw-r--r--src/orchestrator/pkg/module/controller.go135
1 files changed, 135 insertions, 0 deletions
diff --git a/src/orchestrator/pkg/module/controller.go b/src/orchestrator/pkg/module/controller.go
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+++ b/src/orchestrator/pkg/module/controller.go
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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 module
+
+import (
+ "encoding/json"
+
+ "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/db"
+
+ pkgerrors "github.com/pkg/errors"
+)
+
+// Controller contains the parameters needed for Controllers
+// It implements the interface for managing the Controllers
+type Controller struct {
+ Name string `json:"name"`
+
+ Host string `json:"host"`
+
+ Port int64 `json:"port"`
+}
+
+// ControllerKey is the key structure that is used in the database
+type ControllerKey struct {
+ ControllerName string `json:"controller-name"`
+}
+
+// We will use json marshalling to convert to string to
+// preserve the underlying structure.
+func (mk ControllerKey) String() string {
+ out, err := json.Marshal(mk)
+ if err != nil {
+ return ""
+ }
+
+ return string(out)
+}
+
+// ControllerManager is an interface exposes the Controller functionality
+type ControllerManager interface {
+ CreateController(ms Controller) (Controller, error)
+ GetController(name string) (Controller, error)
+ DeleteController(name string) error
+}
+
+// ControllerClient implements the Manager
+// It will also be used to maintain some localized state
+type ControllerClient struct {
+ collectionName string
+ tagMeta string
+}
+
+// NewControllerClient returns an instance of the ControllerClient
+// which implements the Manager
+func NewControllerClient() *ControllerClient {
+ return &ControllerClient{
+ collectionName: "controller",
+ tagMeta: "controllermetadata",
+ }
+}
+
+// CreateController a new collection based on the Controller
+func (mc *ControllerClient) CreateController(m Controller) (Controller, error) {
+
+ //Construct the composite key to select the entry
+ key := ControllerKey{
+ ControllerName: m.Name,
+ }
+
+ //Check if this Controller already exists
+ _, err := mc.GetController(m.Name)
+ if err == nil {
+ return Controller{}, pkgerrors.New("Controller already exists")
+ }
+
+ err = db.DBconn.Create(mc.collectionName, key, mc.tagMeta, m)
+ if err != nil {
+ return Controller{}, pkgerrors.Wrap(err, "Creating DB Entry")
+ }
+
+ return m, nil
+}
+
+// GetController returns the Controller for corresponding name
+func (mc *ControllerClient) GetController(name string) (Controller, error) {
+
+ //Construct the composite key to select the entry
+ key := ControllerKey{
+ ControllerName: name,
+ }
+ value, err := db.DBconn.Read(mc.collectionName, key, mc.tagMeta)
+ if err != nil {
+ return Controller{}, pkgerrors.Wrap(err, "Get Controller")
+ }
+
+ //value is a byte array
+ if value != nil {
+ microserv := Controller{}
+ err = db.DBconn.Unmarshal(value, &microserv)
+ if err != nil {
+ return Controller{}, pkgerrors.Wrap(err, "Unmarshaling Value")
+ }
+ return microserv, nil
+ }
+
+ return Controller{}, pkgerrors.New("Error getting Controller")
+}
+
+// DeleteController the Controller from database
+func (mc *ControllerClient) DeleteController(name string) error {
+
+ //Construct the composite key to select the entry
+ key := ControllerKey{
+ ControllerName: name,
+ }
+ err := db.DBconn.Delete(name, key, mc.tagMeta)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Delete Controller Entry;")
+ }
+ return nil
+}