chore: relinting, continued

This phase applies trivial relinting fixes, to keep the amount of
changes reviewable.

Non-trivial fixes are deferred to a follow-up PR.

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

bytestream.go

@@ -52,14 +52,15 @@ func ByteStreamConsumer(opts ...byteStreamOpt) Consumer {
 			return errors.New("ByteStreamConsumer requires a reader") // early exit
 		}
 
-		close := defaultCloser //nolint:revive,predeclared
+		closer := defaultCloser
 		if vals.Close {
 			if cl, ok := reader.(io.Closer); ok {
-				close = cl.Close //nolint:revive
+				closer = cl.Close
 			}
 		}
-		//nolint:errcheck // closing a reader wouldn't fail.
-		defer close()
+		defer func() {
+			_ = closer()
+		}()
 
 		if wrtr, ok := data.(io.Writer); ok {
 			_, err := io.Copy(wrtr, reader)
@@ -109,14 +110,15 @@ func ByteStreamProducer(opts ...byteStreamOpt) Producer {
 		if writer == nil {
 			return errors.New("ByteStreamProducer requires a writer") // early exit
 		}
-		close := defaultCloser //nolint:revive,predeclared
+		closer := defaultCloser
 		if vals.Close {
 			if cl, ok := writer.(io.Closer); ok {
-				close = cl.Close //nolint:revive
+				closer = cl.Close
 			}
 		}
-		//nolint:errcheck // TODO: closing a writer would fail.
-		defer close()
+		defer func() {
+			_ = closer()
+		}()
 
 		if rc, ok := data.(io.ReadCloser); ok {
 			defer rc.Close()

client/keepalive.go

@@ -48,8 +48,7 @@ func (d *drainingReadCloser) Close() error {
 		// If the reader side (a HTTP server) is misbehaving, it still may send
 		// some bytes, but the closer ignores them to keep the underling
 		// connection open.
-		//nolint:errcheck
-		io.Copy(io.Discard, d.rdr)
+		_, _ = io.Copy(io.Discard, d.rdr)
 	}
 	return d.rdr.Close()
 }

client/opentelemetry_test.go

@@ -121,7 +121,7 @@ func assertOpenTelemetrySubmit(t *testing.T, operation *runtime.ClientOperation,
 		attribute.String("http.route", "/kubernetes-clusters/{cluster_id}"),
 		attribute.String("http.method", http.MethodGet),
 		attribute.String("span.kind", trace.SpanKindClient.String()),
-		attribute.String("http.scheme", "https"),
+		attribute.String("http.scheme", schemeHTTPS),
 		// NOTE: this becomes http.response.status_code with semconv v1.21
 		attribute.Int("http.status_code", 490),
 	}, span.Attributes)

client/opentracing_test.go

@@ -42,7 +42,7 @@ type mockRuntime struct {
 func (m *mockRuntime) Submit(operation *runtime.ClientOperation) (interface{}, error) {
 	_ = operation.Params.WriteToRequest(&m.req, nil)
 	_, _ = operation.Reader.ReadResponse(&tres{}, nil)
-	return nil, nil //nolint:nilnil
+	return map[string]interface{}{}, nil
 }
 
 func testOperation(ctx context.Context) *runtime.ClientOperation {
@@ -52,7 +52,7 @@ func testOperation(ctx context.Context) *runtime.ClientOperation {
 		PathPattern:        "/kubernetes-clusters/{cluster_id}",
 		ProducesMediaTypes: []string{"application/json"},
 		ConsumesMediaTypes: []string{"application/json"},
-		Schemes:            []string{"https"},
+		Schemes:            []string{schemeHTTPS},
 		Reader: runtime.ClientResponseReaderFunc(func(runtime.ClientResponse, runtime.Consumer) (interface{}, error) {
 			return nil, nil
 		}),

client/request.go

@@ -16,6 +16,7 @@ package client
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"io"
 	"log"
@@ -317,13 +318,13 @@ DoneChoosingBodySource:
 
 	urlPath := path.Join(basePathURL.Path, pathPatternURL.Path)
 	for k, v := range r.pathParams {
-		urlPath = strings.Replace(urlPath, "{"+k+"}", url.PathEscape(v), -1) //nolint:gocritic
+		urlPath = strings.ReplaceAll(urlPath, "{"+k+"}", url.PathEscape(v))
 	}
 	if reinstateSlash {
-		urlPath = urlPath + "/" //nolint:gocritic
+		urlPath += "/"
 	}
 
-	req, err := http.NewRequest(r.method, urlPath, body) //nolint:noctx
+	req, err := http.NewRequestWithContext(context.Background(), r.method, urlPath, body)
 	if err != nil {
 		return nil, err
 	}
@@ -361,7 +362,7 @@ func (r *request) GetMethod() string {
 func (r *request) GetPath() string {
 	path := r.pathPattern
 	for k, v := range r.pathParams {
-		path = strings.Replace(path, "{"+k+"}", v, -1) //nolint:gocritic
+		path = strings.ReplaceAll(path, "{"+k+"}", v)
 	}
 	return path
 }

client/request_test.go

@@ -769,7 +769,7 @@ func TestGetBodyCallsBeforeRoundTrip(t *testing.T) {
 		}),
 	}
 
-	openAPIClient := New(hu.Host, "/", []string{"http"})
+	openAPIClient := New(hu.Host, "/", []string{schemeHTTP})
 	res, err := openAPIClient.Submit(operation)
 	require.NoError(t, err)
 

client/runtime.go

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//nolint:goconst
 package client
 
 import (
@@ -40,6 +39,11 @@ import (
 	"github.com/opentracing/opentracing-go"
 )
 
+const (
+	schemeHTTP  = "http"
+	schemeHTTPS = "https"
+)
+
 // TLSClientOptions to configure client authentication with mutual TLS
 type TLSClientOptions struct {
 	// Certificate is the path to a PEM-encoded certificate to be used for
@@ -112,7 +116,9 @@ type TLSClientOptions struct {
 // TLSClientAuth creates a tls.Config for mutual auth
 func TLSClientAuth(opts TLSClientOptions) (*tls.Config, error) {
 	// create client tls config
-	cfg := &tls.Config{} //nolint:gosec
+	cfg := &tls.Config{
+		MinVersion: tls.VersionTLS12,
+	}
 
 	// load client cert if specified
 	if opts.Certificate != "" {
@@ -158,11 +164,12 @@ func TLSClientAuth(opts TLSClientOptions) (*tls.Config, error) {
 	// When no CA certificate is provided, default to the system cert pool
 	// that way when a request is made to a server known by the system trust store,
 	// the name is still verified
-	if opts.LoadedCA != nil { //nolint:gocritic
+	switch {
+	case opts.LoadedCA != nil:
 		caCertPool := basePool(opts.LoadedCAPool)
 		caCertPool.AddCert(opts.LoadedCA)
 		cfg.RootCAs = caCertPool
-	} else if opts.CA != "" {
+	case opts.CA != "":
 		// load ca cert
 		caCert, err := os.ReadFile(opts.CA)
 		if err != nil {
@@ -171,7 +178,7 @@ func TLSClientAuth(opts TLSClientOptions) (*tls.Config, error) {
 		caCertPool := basePool(opts.LoadedCAPool)
 		caCertPool.AppendCertsFromPEM(caCert)
 		cfg.RootCAs = caCertPool
-	} else if opts.LoadedCAPool != nil {
+	case opts.LoadedCAPool != nil:
 		cfg.RootCAs = opts.LoadedCAPool
 	}
 
@@ -227,7 +234,7 @@ type Runtime struct {
 	Host     string
 	BasePath string
 	Formats  strfmt.Registry
-	Context  context.Context //nolint:containedctx
+	Context  context.Context //nolint:containedctx  // we precisely want this type to contain the request context
 
 	Debug  bool
 	logger logger.Logger
@@ -316,7 +323,7 @@ func (r *Runtime) pickScheme(schemes []string) string {
 	if v := r.selectScheme(schemes); v != "" {
 		return v
 	}
-	return "http"
+	return schemeHTTP
 }
 
 func (r *Runtime) selectScheme(schemes []string) string {
@@ -327,9 +334,9 @@ func (r *Runtime) selectScheme(schemes []string) string {
 
 	scheme := schemes[0]
 	// prefer https, but skip when not possible
-	if scheme != "https" && schLen > 1 {
+	if scheme != schemeHTTPS && schLen > 1 {
 		for _, sch := range schemes {
-			if sch == "https" {
+			if sch == schemeHTTPS {
 				scheme = sch
 				break
 			}