portainer/portainer

package backup

import (
    "bytes"
    "io"
    "net/http"

    "github.com/pkg/errors"
    operations "github.com/portainer/portainer/api/backup"
    httperror "github.com/portainer/portainer/pkg/libhttp/error"
    "github.com/portainer/portainer/pkg/libhttp/request"
)

type restorePayload struct {
    FileContent []byte
    FileName    string
    Password    string
}

// @id Restore
// @summary Triggers a system restore using provided backup file
// @description Triggers a system restore using provided backup file
// @description **Access policy**: public
// @tags backup
// @accept json
// @param restorePayload body restorePayload true "Restore request payload"
// @success 200 "Success"
// @failure 400 "Invalid request"
// @failure 500 "Server error"
// @router /restore [post]
func (h *Handler) restore(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
    initialized, err := h.adminMonitor.WasInitialized()
    if err != nil {
        return httperror.InternalServerError("Failed to check system initialization", err)
    }
    if initialized {
        return httperror.BadRequest("Cannot restore already initialized instance", errors.New("system already initialized"))
    }
    h.adminMonitor.Stop()
    defer h.adminMonitor.Start()

    var payload restorePayload
    err = decodeForm(r, &payload)
    if err != nil {
        return httperror.BadRequest("Invalid request payload", err)
    }

    var archiveReader io.Reader = bytes.NewReader(payload.FileContent)
    err = operations.RestoreArchive(archiveReader, payload.Password, h.filestorePath, h.gate, h.dataStore, h.shutdownTrigger)
    if err != nil {
        return httperror.InternalServerError("Failed to restore the backup", err)
    }

    return nil
}

func decodeForm(r *http.Request, p *restorePayload) error {
    content, name, err := request.RetrieveMultiPartFormFile(r, "file")
    if err != nil {
        return err
    }
    p.FileContent = content
    p.FileName = name

    password, _ := request.RetrieveMultiPartFormValue(r, "password", true)
    p.Password = password
    return nil
}