Add event logging around path resolution

Author: frrist

core/pathresolver.go

@@ -22,6 +22,7 @@ var ErrNoNamesys = errors.New(
 // entries and returning the final node.
 func Resolve(ctx context.Context, nsys namesys.NameSystem, r *path.Resolver, p path.Path) (node.Node, error) {
 	if strings.HasPrefix(p.String(), "/ipns/") {
+		defer log.EventBegin(ctx, "resolveIpnsPath").Done()
 		// resolve ipns paths
 
 		// TODO(cryptix): we sould be able to query the local cache for the path

path/resolver.go

@@ -135,6 +135,7 @@ func (s *Resolver) ResolvePathComponents(ctx context.Context, fpath Path) ([]nod
 	if err != nil {
 		return nil, err
 	}
+	defer log.EventBegin(ctx, "resolvePathComponents", logging.LoggableMap{"parts": parts, "cid": h}).Done()
 
 	log.Debug("resolve dag get")
 	nd, err := s.DAG.Get(ctx, h)
@@ -154,6 +155,7 @@ func (s *Resolver) ResolvePathComponents(ctx context.Context, fpath Path) ([]nod
 // would retrieve "baz" in ("bar" in ("foo" in nd.Links).Links).Links
 func (s *Resolver) ResolveLinks(ctx context.Context, ndd node.Node, names []string) ([]node.Node, error) {
 
+	defer log.EventBegin(ctx, "resolveLinks", logging.LoggableMap{"names": names}).Done()
 	result := make([]node.Node, 0, len(names)+1)
 	result = append(result, ndd)
 	nd := ndd // dup arg workaround