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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 governinog 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"
)
// App contains metadata for Apps
type App struct {
Metadata AppMetaData `json:"metadata"`
}
//AppMetaData contains the parameters needed for Apps
type AppMetaData struct {
Name string `json:"name"`
Description string `json:"description"`
UserData1 string `json:"userData1"`
UserData2 string `json:"userData2"`
}
//AppContent contains fileContent
type AppContent struct {
FileContent string
}
// AppKey is the key structure that is used in the database
type AppKey struct {
App string `json:"app"`
Project string `json:"project"`
CompositeApp string `json:"compositeapp"`
CompositeAppVersion string `json:"compositeappversion"`
}
// We will use json marshalling to convert to string to
// preserve the underlying structure.
func (aK AppKey) String() string {
out, err := json.Marshal(aK)
if err != nil {
return ""
}
return string(out)
}
// AppManager is an interface exposes the App functionality
type AppManager interface {
CreateApp(a App, ac AppContent, p string, cN string, cV string) (App, error)
GetApp(name string, p string, cN string, cV string) (App, error)
GetAppContent(name string, p string, cN string, cV string) (AppContent, error)
DeleteApp(name string, p string, cN string, cV string) error
}
// AppClient implements the AppManager
// It will also be used to maintain some localized state
type AppClient struct {
storeName string
tagMeta, tagContent string
}
// NewAppClient returns an instance of the AppClient
// which implements the AppManager
func NewAppClient() *AppClient {
return &AppClient{
storeName: "orchestrator",
tagMeta: "appmetadata",
tagContent: "appcontent",
}
}
// CreateApp creates a new collection based on the App
func (v *AppClient) CreateApp(a App, ac AppContent, p string, cN string, cV string) (App, error) {
//Construct the composite key to select the entry
key := AppKey{
App: a.Metadata.Name,
Project: p,
CompositeApp: cN,
CompositeAppVersion: cV,
}
//Check if this App already exists
_, err := v.GetApp(a.Metadata.Name, p, cN, cV)
if err == nil {
return App{}, pkgerrors.New("App already exists")
}
//Check if Project exists
_, err = NewProjectClient().GetProject(p)
if err != nil {
return App{}, pkgerrors.New("Unable to find the project")
}
//check if CompositeApp with version exists
_, err = NewCompositeAppClient().GetCompositeApp(cN, cV, p)
if err != nil {
return App{}, pkgerrors.New("Unable to find the composite app with version")
}
err = db.DBconn.Insert(v.storeName, key, nil, v.tagMeta, a)
if err != nil {
return App{}, pkgerrors.Wrap(err, "Creating DB Entry")
}
err = db.DBconn.Insert(v.storeName, key, nil, v.tagContent, ac)
if err != nil {
return App{}, pkgerrors.Wrap(err, "Creating DB Entry")
}
return a, nil
}
// GetApp returns the App for corresponding name
func (v *AppClient) GetApp(name string, p string, cN string, cV string) (App, error) {
//Construct the composite key to select the entry
key := AppKey{
App: name,
Project: p,
CompositeApp: cN,
CompositeAppVersion: cV,
}
value, err := db.DBconn.Find(v.storeName, key, v.tagMeta)
if err != nil {
return App{}, pkgerrors.Wrap(err, "Get app")
}
//value is a byte array
if value != nil {
app := App{}
err = db.DBconn.Unmarshal(value[0], &app)
if err != nil {
return App{}, pkgerrors.Wrap(err, "Unmarshaling Value")
}
return app, nil
}
return App{}, pkgerrors.New("Error getting app")
}
// GetAppContent returns content for corresponding app
func (v *AppClient) GetAppContent(name string, p string, cN string, cV string) (AppContent, error) {
//Construct the composite key to select the entry
key := AppKey{
App: name,
Project: p,
CompositeApp: cN,
CompositeAppVersion: cV,
}
value, err := db.DBconn.Find(v.storeName, key, v.tagContent)
if err != nil {
return AppContent{}, pkgerrors.Wrap(err, "Get app content")
}
//value is a byte array
if value != nil {
ac := AppContent{}
err = db.DBconn.Unmarshal(value[0], &ac)
if err != nil {
return AppContent{}, pkgerrors.Wrap(err, "Unmarshaling Value")
}
return ac, nil
}
return AppContent{}, pkgerrors.New("Error getting app content")
}
// DeleteApp deletes the App from database
func (v *AppClient) DeleteApp(name string, p string, cN string, cV string) error {
//Construct the composite key to select the entry
key := AppKey{
App: name,
Project: p,
CompositeApp: cN,
CompositeAppVersion: cV,
}
err := db.DBconn.Remove(v.storeName, key)
if err != nil {
return pkgerrors.Wrap(err, "Delete App Entry;")
}
return nil
}
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