From 5cfb758e4eecb28ba22f301293032a3e918997b7 Mon Sep 17 00:00:00 2001
From: Dmitrii Stepanov <d.stepanov@yadro.com>
Date: Fri, 17 Nov 2023 09:05:46 +0300
Subject: [PATCH] [#806] morph: Remove container list cache

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
---
 cmd/frostfs-node/cache.go     | 71 -----------------------------------
 cmd/frostfs-node/container.go | 10 +----
 2 files changed, 1 insertion(+), 80 deletions(-)

diff --git a/cmd/frostfs-node/cache.go b/cmd/frostfs-node/cache.go
index ea5bdfda0..cd383a5c2 100644
--- a/cmd/frostfs-node/cache.go
+++ b/cmd/frostfs-node/cache.go
@@ -6,13 +6,11 @@ import (
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
-	cntClient "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client/container"
 	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
 	utilSync "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/sync"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	netmapSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	lru "github.com/hashicorp/golang-lru/v2"
 )
 
@@ -244,75 +242,6 @@ func (s *lruNetmapSource) Epoch() (uint64, error) {
 	return s.netState.CurrentEpoch(), nil
 }
 
-// wrapper over TTL cache of values read from the network
-// that implements container lister.
-type ttlContainerLister struct {
-	inner  *ttlNetCache[string, *cacheItemContainerList]
-	client *cntClient.Client
-}
-
-// value type for ttlNetCache used by ttlContainerLister.
-type cacheItemContainerList struct {
-	// protects list from concurrent add/remove ops
-	mtx sync.RWMutex
-	// actual list of containers owner by the particular user
-	list []cid.ID
-}
-
-func newCachedContainerLister(c *cntClient.Client, ttl time.Duration) ttlContainerLister {
-	const containerListerCacheSize = 100
-
-	lruCnrListerCache := newNetworkTTLCache(containerListerCacheSize, ttl, func(strID string) (*cacheItemContainerList, error) {
-		var id *user.ID
-
-		if strID != "" {
-			id = new(user.ID)
-
-			err := id.DecodeString(strID)
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		list, err := c.ContainersOf(id)
-		if err != nil {
-			return nil, err
-		}
-
-		return &cacheItemContainerList{
-			list: list,
-		}, nil
-	})
-
-	return ttlContainerLister{inner: lruCnrListerCache, client: c}
-}
-
-// List returns list of container IDs from the cache. If list is missing in the
-// cache or expired, then it returns container IDs from side chain and updates
-// the cache.
-func (s ttlContainerLister) List(id *user.ID) ([]cid.ID, error) {
-	if id == nil {
-		return s.client.ContainersOf(nil)
-	}
-
-	item, err := s.inner.get(id.EncodeToString())
-	if err != nil {
-		return nil, err
-	}
-
-	item.mtx.RLock()
-	res := make([]cid.ID, len(item.list))
-	copy(res, item.list)
-	item.mtx.RUnlock()
-
-	return res, nil
-}
-
-func (s *ttlContainerLister) invalidate(owner user.ID) {
-	strOwner := owner.EncodeToString()
-	s.inner.remove(strOwner)
-}
-
 type cachedIRFetcher struct {
 	*ttlNetCache[struct{}, [][]byte]
 }
diff --git a/cmd/frostfs-node/container.go b/cmd/frostfs-node/container.go
index c7360a1bf..5477947d7 100644
--- a/cmd/frostfs-node/container.go
+++ b/cmd/frostfs-node/container.go
@@ -63,7 +63,6 @@ func configureEACLAndContainerSources(c *cfg, client *cntClient.Client, cnrSrc c
 		// use RPC node as source of Container contract items (with caching)
 		cachedContainerStorage := newCachedContainerStorage(cnrSrc, c.cfgMorph.cacheTTL)
 		cachedEACLStorage := newCachedEACLStorage(eACLFetcher, c.cfgMorph.cacheTTL)
-		cachedContainerLister := newCachedContainerLister(client, c.cfgMorph.cacheTTL)
 
 		subscribeToContainerCreation(c, func(e event.Event) {
 			ev := e.(containerEvent.PutSuccess)
@@ -74,7 +73,6 @@ func configureEACLAndContainerSources(c *cfg, client *cntClient.Client, cnrSrc c
 			//  creation success are most commonly tracked by polling GET op.
 			cnr, err := cnrSrc.Get(ev.ID)
 			if err == nil {
-				cachedContainerLister.invalidate(cnr.Value.Owner())
 				cachedContainerStorage.containerCache.set(ev.ID, cnr, nil)
 			} else {
 				// unlike removal, we expect successful receive of the container
@@ -92,13 +90,7 @@ func configureEACLAndContainerSources(c *cfg, client *cntClient.Client, cnrSrc c
 
 		subscribeToContainerRemoval(c, func(e event.Event) {
 			ev := e.(containerEvent.DeleteSuccess)
-
 			cachedContainerStorage.handleRemoval(ev.ID)
-			info, err := cachedContainerStorage.DeletionInfo(ev.ID)
-			if err == nil {
-				cachedContainerLister.invalidate(info.Owner)
-			}
-
 			c.log.Debug(logs.FrostFSNodeContainerRemovalEventsReceipt,
 				zap.Stringer("id", ev.ID),
 			)
@@ -107,7 +99,7 @@ func configureEACLAndContainerSources(c *cfg, client *cntClient.Client, cnrSrc c
 		c.cfgObject.eaclSource = cachedEACLStorage
 		c.cfgObject.cnrSource = cachedContainerStorage
 
-		cnrRdr.lister = cachedContainerLister
+		cnrRdr.lister = client
 		cnrRdr.eacl = c.cfgObject.eaclSource
 		cnrRdr.src = c.cfgObject.cnrSource