namesys: async: go vet fixes

License: MIT
Signed-off-by: Łukasz Magiera <magik6k@gmail.com>

core/corehttp/gateway_test.go

@@ -35,7 +35,7 @@ type mockNamesys map[string]path.Path
 func (m mockNamesys) Resolve(ctx context.Context, name string, opts ...nsopts.ResolveOpt) (value path.Path, err error) {
 	cfg := nsopts.DefaultResolveOpts()
 	for _, o := range opts {
-		o(cfg)
+		o(&cfg)
 	}
 	depth := cfg.Depth
 	if depth == nsopts.UnlimitedDepth {
@@ -57,6 +57,14 @@ func (m mockNamesys) Resolve(ctx context.Context, name string, opts ...nsopts.Re
 	return value, nil
 }
 
+func (m mockNamesys) ResolveAsync(ctx context.Context, name string, opts ...nsopts.ResolveOpt) <-chan namesys.Result {
+	out := make(chan namesys.Result, 1)
+	v, err := m.Resolve(ctx, name, opts...)
+	out <- namesys.Result{Path: v, Err: err}
+	close(out)
+	return nil
+}
+
 func (m mockNamesys) Publish(ctx context.Context, name ci.PrivKey, value path.Path) error {
 	return errors.New("not implemented for mockNamesys")
 }

namesys/base.go

@@ -68,23 +68,24 @@ func resolveAsyncDo(ctx context.Context, r resolver, name string, options opts.R
 		for {
 			select {
 			case res, ok := <-resCh:
-				if res.err != nil {
-					outCh <- Result{err: res.err}
-					return
-				}
 				if !ok {
 					resCh = nil
 					continue
 				}
+
+				if res.err != nil {
+					outCh <- Result{Err: res.err}
+					return
+				}
 				log.Debugf("resolved %s to %s", name, res.value.String())
 				if strings.HasPrefix(res.value.String(), "/ipfs/") {
-					outCh <- Result{err: res.err}
+					outCh <- Result{Err: res.err}
 					continue
 				}
 				p := strings.TrimPrefix(res.value.String(), prefix)
 
 				if depth == 1 {
-					outCh <- Result{err: ErrResolveRecursion}
+					outCh <- Result{Err: ErrResolveRecursion}
 					continue
 				}
 
@@ -99,17 +100,20 @@ func resolveAsyncDo(ctx context.Context, r resolver, name string, options opts.R
 					cancelSub()
 				}
 				subCtx, cancelSub = context.WithCancel(ctx)
+				defer cancelSub()
 
 				subCh = resolveAsyncDo(subCtx, r, p, subopts, prefix)
 			case res, ok := <-subCh:
-				if res.err != nil {
-					outCh <- Result{err: res.err}
-					return
-				}
 				if !ok {
 					subCh = nil
 					continue
 				}
+
+				if res.Err != nil {
+					outCh <- Result{Err: res.Err}
+					return
+				}
+
 				outCh <- res
 			case <-ctx.Done():
 			}

namesys/dns.go

@@ -31,6 +31,10 @@ func (r *DNSResolver) Resolve(ctx context.Context, name string, options ...opts.
 	return resolve(ctx, r, name, opts.ProcessOpts(options), "/ipns/")
 }
 
+func (r *DNSResolver) ResolveAsync(ctx context.Context, name string, options ...opts.ResolveOpt) <-chan Result {
+	return resolveAsync(ctx, r, name, opts.ProcessOpts(options), "/ipns/")
+}
+
 type lookupRes struct {
 	path  path.Path
 	error error
@@ -112,8 +116,8 @@ func (r *DNSResolver) resolveOnceAsync(ctx context.Context, name string, options
 				}
 				if subRes.error == nil {
 					select {
-						case out <- onceResult{value: subRes.path}:
-						case <-ctx.Done():
+					case out <- onceResult{value: subRes.path}:
+					case <-ctx.Done():
 					}
 					return
 				}

namesys/interface.go

@@ -65,8 +65,8 @@ type NameSystem interface {
 
 // Result is the return type for Resolver.ResolveAsync.
 type Result struct {
-	path path.Path
-	err  error
+	Path path.Path
+	Err  error
 }
 
 // Resolver is an object capable of resolving names.

namesys/namesys_test.go

@@ -38,11 +38,15 @@ func testResolution(t *testing.T, resolver Resolver, name string, depth uint, ex
 	}
 }
 
-func (r *mockResolver) resolveOnce(ctx context.Context, name string, opts *opts.ResolveOpts) (path.Path, time.Duration, error) {
+func (r *mockResolver) resolveOnce(ctx context.Context, name string, opts opts.ResolveOpts) (path.Path, time.Duration, error) {
 	p, err := path.ParsePath(r.entries[name])
 	return p, 0, err
 }
 
+func (r *mockResolver) resolveOnceAsync(ctx context.Context, name string, options opts.ResolveOpts) <-chan onceResult {
+	panic("stub")
+}
+
 func mockResolverOne() *mockResolver {
 	return &mockResolver{
 		entries: map[string]string{