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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 api
import (
"errors"
uuid "github.com/hashicorp/go-uuid"
"net/http"
"os"
)
type DirectoryOperationer interface {
// Service Operations.
CreateService(CreateRegisterServiceBody) (string, error)
RemoveService(string) error
CreateServiceSubdomain(string, string) error
RemoveServiceSubdomain(string, string) error
// Directory Operations.
CreateDirectory(string) error
RemoveDirectory(string) error
RemoveSubDirectory(string, string) error
RemoveFile(string, string, string) error
FindService(string) (string, bool, error)
FetchFile(http.ResponseWriter, *http.Request, string, string, string)
CreateFile(string) (*os.File, error)
}
type DirectoryStruct struct {
directory string
}
/*
TODO(sshank): This needs to be made completely stateless or else each container running this API will not have
same data in token_service_map.json
*/
const (
JSONPATH = "api/token_service_map.json"
)
var MOUNTPATH = ""
func (d *DirectoryStruct) CreateService(body CreateRegisterServiceBody) (string, error) {
// Having same name is prohibited?
found, err := FindServiceInJSON(JSONPATH, body.Domain)
if err != nil {
return "", err
}
if found {
return "", errors.New("Service already found. Check name.")
}
token, err := uuid.GenerateUUID()
if err != nil {
return "", err
}
err = d.CreateDirectory(token)
if err != nil {
return "", err
}
err = WriteJSON(JSONPATH, token, body.Domain)
if err != nil {
return "", err
}
return token, nil
}
func (d *DirectoryStruct) CreateServiceSubdomain(token string, subdomain string) error {
foundToken, err := FindTokenInJSON(JSONPATH, token)
if err != nil {
return err
}
if foundToken == false {
return errors.New("Token not found. Please check token or if service is created.")
}
err = d.CreateSubDirectory(token, subdomain)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) RemoveService(token string) error {
err := DeleteInJSON(JSONPATH, token)
if err != nil {
return err
}
err = d.RemoveDirectory(token)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) FindService(token string) (string, bool, error) {
service, found, err := GetServicebyToken(JSONPATH, token)
if err != nil {
return "", false, err
}
return service, found, nil
}
func (d *DirectoryStruct) RemoveServiceSubdomain(token string, subdomain string) error {
foundToken, err := FindTokenInJSON(JSONPATH, token)
if err != nil {
return err
}
if foundToken == false {
return errors.New("Token not found. Please check token or if service is created.")
}
err = d.RemoveSubDirectory(token, subdomain)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) CreateDirectory(token string) error {
// Permissions inside mount point?
err := os.Mkdir(MOUNTPATH+token, os.FileMode(0770))
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) CreateSubDirectory(token string, subdomain string) error {
err := os.Mkdir(MOUNTPATH+token+"/"+subdomain, os.FileMode(0770))
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) RemoveDirectory(token string) error {
err := os.RemoveAll(MOUNTPATH + token)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) RemoveSubDirectory(token string, subdomain string) error {
err := os.RemoveAll(MOUNTPATH + token + "/" + subdomain)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) RemoveFile(token string, subdomain string, filename string) error {
var filepath = ""
if subdomain != "" {
filepath += MOUNTPATH + token + "/" + subdomain + "/" + filename
} else {
filepath += MOUNTPATH + token + "/" + filename
}
// If error, it seems to show the mounthpath back to the client. This is not good
// error return practise. It shoudn't return the exact file path on the system.
err := os.Remove(filepath)
if err != nil {
return err
}
return nil
}
func (d *DirectoryStruct) FetchFile(
w http.ResponseWriter, r *http.Request, token string, subdomain string, filename string) {
var filepath = ""
if subdomain != "" {
filepath += MOUNTPATH + token + "/" + subdomain + "/" + filename
} else {
filepath += MOUNTPATH + token + "/" + filename
}
http.ServeFile(w, r, filepath)
}
func (d *DirectoryStruct) CreateFile(filepath string) (*os.File, error) {
f, err := os.OpenFile(filepath, os.O_CREATE|os.O_WRONLY, 0770)
if err != nil {
return nil, err
}
return f, nil
}
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