sftpgo-mirror/internal/httpd/webtask.go
Nicola Murino f38966c6ac
WebClient: refactor long-running tasks to improve browser compatibility
Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
2024-03-11 18:19:57 +01:00

108 lines
2.8 KiB
Go

// Copyright (C) 2024 Nicola Murino
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package httpd
import (
"encoding/json"
"fmt"
"sync"
"time"
"github.com/drakkan/sftpgo/v2/internal/dataprovider"
"github.com/drakkan/sftpgo/v2/internal/logger"
"github.com/drakkan/sftpgo/v2/internal/util"
)
var (
webTaskMgr webTaskManager
)
func newWebTaskManager(isShared int) webTaskManager {
if isShared == 1 {
logger.Info(logSender, "", "using provider task manager")
return &dbTaskManager{}
}
logger.Info(logSender, "", "using memory task manager")
return &memoryTaskManager{}
}
type webTaskManager interface {
Add(data webTaskData) error
Get(ID string) (webTaskData, error)
Cleanup()
}
type webTaskData struct {
ID string `json:"id"`
User string `json:"user"`
Path string `json:"path"`
Target string `json:"target"`
Timestamp int64 `json:"ts"`
Status int `json:"status"` // 0 in progress or http status code (200 ok, 403 and so on)
}
type memoryTaskManager struct {
tasks sync.Map
}
func (m *memoryTaskManager) Add(data webTaskData) error {
m.tasks.Store(data.ID, &data)
return nil
}
func (m *memoryTaskManager) Get(ID string) (webTaskData, error) {
data, ok := m.tasks.Load(ID)
if !ok {
return webTaskData{}, util.NewRecordNotFoundError(fmt.Sprintf("task for ID %q not found", ID))
}
return *data.(*webTaskData), nil
}
func (m *memoryTaskManager) Cleanup() {
m.tasks.Range(func(key, value any) bool {
data := value.(*webTaskData)
if data.Timestamp < util.GetTimeAsMsSinceEpoch(time.Now().Add(-5*time.Minute)) {
m.tasks.Delete(key)
}
return true
})
}
type dbTaskManager struct{}
func (m *dbTaskManager) Add(data webTaskData) error {
session := dataprovider.Session{
Key: data.ID,
Data: data,
Type: dataprovider.SessionTypeWebTask,
Timestamp: data.Timestamp,
}
return dataprovider.AddSharedSession(session)
}
func (m *dbTaskManager) Get(ID string) (webTaskData, error) {
sess, err := dataprovider.GetSharedSession(ID)
if err != nil {
return webTaskData{}, err
}
d := sess.Data.([]byte)
var data webTaskData
err = json.Unmarshal(d, &data)
return data, err
}
func (m *dbTaskManager) Cleanup() {
dataprovider.CleanupSharedSessions(dataprovider.SessionTypeWebTask, time.Now().Add(-5*time.Minute)) //nolint:errcheck
}