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patch-abstract.go
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patch-abstract.go
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/*
* Copyright (c) 2019-2021. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells 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, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells 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 Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package merger
import (
"context"
"sync"
"time"
"github.com/pydio/cells/v4/common/log"
"go.uber.org/zap/zapcore"
"github.com/pydio/cells/v4/common/proto/tree"
"github.com/pydio/cells/v4/common/sync/model"
)
type AbstractPatch struct {
uuid string
options PatchOptions
source model.PathSyncSource
target model.PathSyncTarget
mTime time.Time
sessionProviderContext context.Context
sessionSilent bool
lockSessionProviderContext context.Context
lockSession string
skipFilterToTarget bool
postFilter []func() error
statusChan chan model.Status
doneChan chan interface{}
cmd *model.Command
closing bool
closeLock *sync.Mutex
patchError error
}
func (b *AbstractPatch) GetUUID() string {
return b.uuid
}
func (b *AbstractPatch) SetUUID(u string) {
b.uuid = u
}
func (b *AbstractPatch) GetStamp() time.Time {
return b.mTime
}
func (b *AbstractPatch) Stamp(t time.Time) {
b.mTime = t
}
func (b *AbstractPatch) SetupChannels(status chan model.Status, done chan interface{}, cmd *model.Command) {
b.statusChan = status
b.doneChan = done
b.cmd = cmd
if b.closeLock == nil {
b.closeLock = &sync.Mutex{}
}
// This may be a second processing
b.closing = false
}
func (b *AbstractPatch) SetPatchError(e error) error {
b.Status(model.NewProcessingStatus(e.Error()).SetError(e))
return e
}
func (b *AbstractPatch) Status(s model.Status) {
b.mTime = time.Now()
if s.IsError() {
b.patchError = s.Error()
}
if b.statusChan != nil {
go func() {
defer func() {
recover()
}()
b.closeLock.Lock()
c := b.closing
b.closeLock.Unlock()
if !c {
b.statusChan <- s
}
}()
}
}
func (b *AbstractPatch) Done(info interface{}) {
b.mTime = time.Now()
if b.doneChan != nil {
b.closeLock.Lock()
b.closing = true
b.closeLock.Unlock()
b.doneChan <- info
}
}
// SetError sets a global error status on this patch
func (b *AbstractPatch) SetError(e error) {
b.patchError = e
}
func (b *AbstractPatch) Source(newSource ...model.PathSyncSource) model.PathSyncSource {
if len(newSource) > 0 {
b.source = newSource[0]
}
return b.source
}
func (b *AbstractPatch) Target(newTarget ...model.PathSyncTarget) model.PathSyncTarget {
if len(newTarget) > 0 {
b.target = newTarget[0]
}
return b.target
}
func (b *AbstractPatch) SetLockSessionData(providerContext context.Context, lockSession string) {
b.lockSessionProviderContext = providerContext
b.lockSession = lockSession
}
func (b *AbstractPatch) SetSessionData(providerContext context.Context, silentSession bool) {
b.sessionProviderContext = providerContext
b.sessionSilent = silentSession
}
func (b *AbstractPatch) StartSession(rootNode *tree.Node) (*tree.IndexationSession, error) {
if sessionProvider, ok := b.Target().(model.SessionProvider); ok && b.sessionProviderContext != nil {
return sessionProvider.StartSession(b.sessionProviderContext, rootNode, b.sessionSilent)
} else {
return &tree.IndexationSession{Uuid: "fake-session", Description: "Noop Session"}, nil
}
}
func (b *AbstractPatch) FlushSession(sessionUuid string) error {
if sessionProvider, ok := b.Target().(model.SessionProvider); ok && b.sessionProviderContext != nil {
return sessionProvider.FlushSession(b.sessionProviderContext, sessionUuid)
}
return nil
}
func (b *AbstractPatch) FinishSession(sessionUuid string) (err error) {
if sessionProvider, ok := b.Target().(model.SessionProvider); ok && b.sessionProviderContext != nil {
err = sessionProvider.FinishSession(b.sessionProviderContext, sessionUuid)
}
if lockBranchProvider, ok := b.Target().(model.LockBranchProvider); ok && b.lockSession != "" {
log.Logger(b.lockSessionProviderContext).Info("Unlocking branch with session " + b.lockSession)
err = lockBranchProvider.UnlockBranch(b.lockSessionProviderContext, b.lockSession)
}
return
}
func (b *AbstractPatch) HasTransfers() bool {
_, ok1 := model.AsDataSyncSource(b.Source())
_, ok2 := model.AsDataSyncTarget(b.Target())
return ok1 && ok2
}
func (b *AbstractPatch) SkipFilterToTarget(skip bool) {
b.skipFilterToTarget = skip
}
// PostFilter gets or sets a callback to be triggered after filtering
func (b *AbstractPatch) PostFilter(f ...func() error) []func() error {
if len(f) > 0 {
b.postFilter = append(b.postFilter, f...)
}
return b.postFilter
}
func (b *AbstractPatch) zapSource() zapcore.Field {
return model.ZapEndpoint("source", b.Source())
}
func (b *AbstractPatch) zapTarget() zapcore.Field {
return model.ZapEndpoint("target", b.Target())
}