chore: fix NPE

Signed-off-by: Valery Piashchynski <[email protected]>

go.sum

@@ -35,8 +35,6 @@ go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/zap v1.25.0 h1:4Hvk6GtkucQ790dqmj7l1eEnRdKm3k3ZUrUMS2d5+5c=
 go.uber.org/zap v1.25.0/go.mod h1:JIAUzQIH94IC4fOJQm7gMmBJP5k7wQfdcnYdPoEXJYk=
-golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
-golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

plugin.go

@@ -61,10 +61,10 @@ func (p *Plugin) Init(cfg Configurer, log Logger) error {
 		return errors.E(op, err)
 	}
 	p.constructors = make(map[string]kv.Constructor, 5)
-
 	p.storages = make(map[string]kv.Storage, 5)
-
 	p.log = log.NamedLogger(PluginName)
+	// NOOP tracer
+	p.tracer = sdktrace.NewTracerProvider()
 
 	p.cfgPlugin = cfg
 	return nil
@@ -74,11 +74,6 @@ func (p *Plugin) Serve() chan error {
 	errCh := make(chan error, 1)
 	const op = errors.Op("kv_plugin_serve")
 
-	if p.tracer == nil {
-		// NOOP tracer
-		p.tracer = sdktrace.NewTracerProvider()
-	}
-
 	// key - storage name in the config
 	// value - storage
 	// For this config we should have 3 constructors: memory, boltdb and memcached but 4 KVs: default, boltdb-south, boltdb-north and memcached