[#1306] node: Allow tombstone_lifetime config to be loaded on the fly

Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

cmd/frostfs-node/config.go

@@ -105,6 +105,10 @@ type applicationConfiguration struct {
 		timestamp   bool
 	}
 
+	ObjectCfg struct {
+		tombstoneLifetime uint64
+	}
+
 	EngineCfg struct {
 		errorThreshold uint32
 		shardPoolSize  uint32
@@ -223,6 +227,10 @@ func (a *applicationConfiguration) readConfig(c *config.Config) error {
 	a.LoggerCfg.destination = loggerconfig.Destination(c)
 	a.LoggerCfg.timestamp = loggerconfig.Timestamp(c)
 
+	// Object
+
+	a.ObjectCfg.tombstoneLifetime = objectconfig.TombstoneLifetime(c)
+
 	// Storage Engine
 
 	a.EngineCfg.errorThreshold = engineconfig.ShardErrorThreshold(c)
@@ -622,6 +630,7 @@ type cfgObject struct {
 
 	cfgLocalStorage cfgLocalStorage
 
+	tsLifetimeUpdated atomic.Bool
 	tombstoneLifetime uint64
 
 	skipSessionTokenIssuerVerification bool
@@ -816,6 +825,7 @@ func initCfgObject(appCfg *config.Config) cfgObject {
 	return cfgObject{
 		pool:                               initObjectPool(appCfg),
 		tombstoneLifetime:                  objectconfig.TombstoneLifetime(appCfg),
+		tsLifetimeUpdated:                  atomic.Bool{},
 		skipSessionTokenIssuerVerification: objectconfig.Put(appCfg).SkipSessionTokenIssuerVerification(),
 	}
 }
@@ -1294,6 +1304,10 @@ func (c *cfg) reloadConfig(ctx context.Context) {
 
 	components := c.getComponents(ctx, logPrm)
 
+	// Object
+	c.cfgObject.tombstoneLifetime = c.ObjectCfg.tombstoneLifetime
+	c.cfgObject.tsLifetimeUpdated.Store(true)
+
 	// Storage Engine
 
 	var rcfg engine.ReConfiguration

cmd/frostfs-node/object.go

@@ -115,6 +115,9 @@ type delNetInfo struct {
 }
 
 func (i *delNetInfo) TombstoneLifetime() (uint64, error) {
+	if swapped := i.cfg.cfgObject.tsLifetimeUpdated.CompareAndSwap(true, false); swapped {
+		i.tsLifetime = i.cfg.cfgObject.tombstoneLifetime
+	}
 	return i.tsLifetime, nil
 }