From b8d1144839dcc16117768d4526587c83a0fac2fd Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Wed, 17 Feb 2021 15:30:11 +0300
Subject: [PATCH] [#378] object/delete: Set expiration epoch of the created
 tombstones

Make object delete service to use network information to calculate and set
expiration of the created tombstone.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 pkg/services/object/delete/exec.go    |  8 ++++++++
 pkg/services/object/delete/local.go   | 16 ++++++++++++++++
 pkg/services/object/delete/service.go | 19 +++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/pkg/services/object/delete/exec.go b/pkg/services/object/delete/exec.go
index fa4afc9a9..42badef67 100644
--- a/pkg/services/object/delete/exec.go
+++ b/pkg/services/object/delete/exec.go
@@ -2,9 +2,11 @@ package deletesvc
 
 import (
 	"context"
+	"strconv"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
+	objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
 	"github.com/nspcc-dev/neofs-node/pkg/core/object"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
@@ -236,6 +238,12 @@ func (exec *execCtx) initTombstoneObject() bool {
 	exec.tombstoneObj.SetType(objectSDK.TypeTombstone)
 	exec.tombstoneObj.SetPayload(payload)
 
+	a := objectSDK.NewAttribute()
+	a.SetKey(objectV2.SysAttributeExpEpoch)
+	a.SetValue(strconv.FormatUint(exec.tombstone.ExpirationEpoch(), 10))
+
+	exec.tombstoneObj.SetAttributes(a)
+
 	return true
 }
 
diff --git a/pkg/services/object/delete/local.go b/pkg/services/object/delete/local.go
index 26b0d9dde..cd446ca98 100644
--- a/pkg/services/object/delete/local.go
+++ b/pkg/services/object/delete/local.go
@@ -2,6 +2,7 @@ package deletesvc
 
 import (
 	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"go.uber.org/zap"
 )
 
 func (exec *execCtx) executeLocal() {
@@ -25,7 +26,22 @@ func (exec *execCtx) executeLocal() {
 }
 
 func (exec *execCtx) formTombstone() (ok bool) {
+	tsLifetime, err := exec.svc.netInfo.TombstoneLifetime()
+	if err != nil {
+		exec.status = statusUndefined
+		exec.err = err
+
+		exec.log.Debug("could not read tombstone lifetime config",
+			zap.String("error", err.Error()),
+		)
+
+		return false
+	}
+
 	exec.tombstone = objectSDK.NewTombstone()
+	exec.tombstone.SetExpirationEpoch(
+		exec.svc.netInfo.CurrentEpoch() + tsLifetime,
+	)
 	exec.addMembers([]*objectSDK.ID{exec.address().ObjectID()})
 
 	exec.log.Debug("forming split info...")
diff --git a/pkg/services/object/delete/service.go b/pkg/services/object/delete/service.go
index db02754a8..b6e249d45 100644
--- a/pkg/services/object/delete/service.go
+++ b/pkg/services/object/delete/service.go
@@ -2,6 +2,7 @@ package deletesvc
 
 import (
 	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
 	getsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/get"
 	putsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/put"
 	searchsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/search"
@@ -17,6 +18,15 @@ type Service struct {
 // Option is a Service's constructor option.
 type Option func(*cfg)
 
+// NetworkInfo wraps network state and configurations.
+type NetworkInfo interface {
+	netmap.State
+
+	// Must return the lifespan of the tombstones
+	// in the NeoFS epochs.
+	TombstoneLifetime() (uint64, error)
+}
+
 type cfg struct {
 	log *logger.Logger
 
@@ -37,6 +47,8 @@ type cfg struct {
 	placer interface {
 		put(*execCtx, bool) (*objectSDK.ID, error)
 	}
+
+	netInfo NetworkInfo
 }
 
 func defaultCfg() *cfg {
@@ -87,3 +99,10 @@ func WithPutService(p *putsvc.Service) Option {
 		c.placer = (*putSvcWrapper)(p)
 	}
 }
+
+// WithNetworkInfo returns option to set network information source.
+func WithNetworkInfo(netInfo NetworkInfo) Option {
+	return func(c *cfg) {
+		c.netInfo = netInfo
+	}
+}