[#948] metrics: Set actual value for shard_id after restart

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/local_object_storage/writecache/cachebbolt.go

@@ -146,3 +146,7 @@ func (c *cache) Close() error {
 	c.metrics.Close()
 	return nil
 }
+
+func (c *cache) GetMetrics() Metrics {
+	return c.metrics
+}

pkg/local_object_storage/writecache/metrics.go

@@ -19,6 +19,7 @@ const (
 )
 
 type Metrics interface {
+	SetShardID(string)
 	Get(d time.Duration, success bool, st StorageType)
 	Delete(d time.Duration, success bool, st StorageType)
 	Put(d time.Duration, success bool, st StorageType)
@@ -35,6 +36,8 @@ func DefaultMetrics() Metrics { return metricsStub{} }
 
 type metricsStub struct{}
 
+func (metricsStub) SetShardID(string) {}
+
 func (metricsStub) Get(time.Duration, bool, StorageType) {}
 
 func (metricsStub) Delete(time.Duration, bool, StorageType) {}

pkg/local_object_storage/writecache/writecache.go

@@ -41,6 +41,7 @@ type Cache interface {
 	Init() error
 	Open(ctx context.Context, mode mode.Mode) error
 	Close() error
+	GetMetrics() Metrics
 }
 
 // MainStorage is the interface of the underlying storage of Cache implementations.