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/*
* Copyright 2018 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 rb
import (
"bytes"
"encoding/base64"
"k8splugin/internal/db"
"log"
uuid "github.com/hashicorp/go-uuid"
pkgerrors "github.com/pkg/errors"
)
// Profile contains the parameters needed for resource bundle (rb) profiles
// It implements the interface for managing the profiles
type Profile struct {
UUID string `json:"uuid,omitempty"`
RBDID string `json:"rbdid"`
Name string `json:"name"`
Namespace string `json:"namespace"`
KubernetesVersion string `json:"kubernetesversion"`
}
// ProfileManager is an interface exposes the resource bundle profile functionality
type ProfileManager interface {
Create(def Profile) (Profile, error)
List() ([]Profile, error)
Get(resID string) (Profile, error)
Help() map[string]string
Delete(resID string) error
Upload(resID string, inp []byte) error
}
// ProfileClient implements the ProfileManager
// It will also be used to maintain some localized state
type ProfileClient struct {
storeName string
tagMeta, tagContent string
}
// NewProfileClient returns an instance of the ProfileClient
// which implements the ProfileManager
// Uses rb/def prefix
func NewProfileClient() *ProfileClient {
return &ProfileClient{
storeName: "rbprofile",
tagMeta: "metadata",
tagContent: "content",
}
}
// Help returns some information on how to create the content
// for the profile in the form of html formatted page
func (v *ProfileClient) Help() map[string]string {
ret := make(map[string]string)
return ret
}
// Create an entry for the resource bundle profile in the database
func (v *ProfileClient) Create(p Profile) (Profile, error) {
//Check if provided RBID is a valid resource bundle
_, err := NewDefinitionClient().Get(p.RBDID)
if err != nil {
return Profile{}, pkgerrors.Errorf("Invalid Resource Bundle ID provided: %s", err.Error())
}
// Name is required
if p.Name == "" {
return Profile{}, pkgerrors.New("Name is required for Resource Bundle Profile")
}
// If UUID is empty, we will generate one
if p.UUID == "" {
p.UUID, _ = uuid.GenerateUUID()
}
key := p.UUID
err = db.DBconn.Create(v.storeName, key, v.tagMeta, p)
if err != nil {
return Profile{}, pkgerrors.Wrap(err, "Creating Profile DB Entry")
}
return p, nil
}
// List all resource entries in the database
func (v *ProfileClient) List() ([]Profile, error) {
res, err := db.DBconn.ReadAll(v.storeName, v.tagMeta)
if err != nil || len(res) == 0 {
return []Profile{}, pkgerrors.Wrap(err, "Listing Resource Bundle Profiles")
}
var retData []Profile
for key, value := range res {
//value is a byte array
if len(value) > 0 {
pr := Profile{}
err = db.DBconn.Unmarshal(value, &pr)
if err != nil {
log.Printf("[Profile] Error Unmarshaling value for: %s", key)
continue
}
retData = append(retData, pr)
}
}
return retData, nil
}
// Get returns the Resource Bundle Profile for corresponding ID
func (v *ProfileClient) Get(id string) (Profile, error) {
value, err := db.DBconn.Read(v.storeName, id, v.tagMeta)
if err != nil {
return Profile{}, pkgerrors.Wrap(err, "Get Resource Bundle Profile")
}
//value is a byte array
if value != nil {
pr := Profile{}
err = db.DBconn.Unmarshal(value, &pr)
if err != nil {
return Profile{}, pkgerrors.Wrap(err, "Unmarshaling Profile Value")
}
return pr, nil
}
return Profile{}, pkgerrors.New("Error getting Resource Bundle Profile")
}
// Delete the Resource Bundle Profile from database
func (v *ProfileClient) Delete(id string) error {
err := db.DBconn.Delete(v.storeName, id, v.tagMeta)
if err != nil {
return pkgerrors.Wrap(err, "Delete Resource Bundle Profile")
}
err = db.DBconn.Delete(v.storeName, id, v.tagContent)
if err != nil {
return pkgerrors.Wrap(err, "Delete Resource Bundle Profile Content")
}
return nil
}
// Upload the contents of resource bundle into database
func (v *ProfileClient) Upload(id string, inp []byte) error {
//ignore the returned data here.
_, err := v.Get(id)
if err != nil {
return pkgerrors.Errorf("Invalid Profile ID provided %s", err.Error())
}
err = isTarGz(bytes.NewBuffer(inp))
if err != nil {
return pkgerrors.Errorf("Error in file format %s", err.Error())
}
//Encode given byte stream to text for storage
encodedStr := base64.StdEncoding.EncodeToString(inp)
err = db.DBconn.Create(v.storeName, id, v.tagContent, encodedStr)
if err != nil {
return pkgerrors.Errorf("Error uploading data to db %s", err.Error())
}
return nil
}
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