fix linter issues (#329)

* fix linter issues
* replace fmt with logger
Signed-off-by: Fabian Kammel <fk@edgeless.systems>
Co-authored-by: Daniel Weiße <66256922+daniel-weisse@users.noreply.github.com>

bootstrapper/cloudprovider/qemu/logger.go

@@ -1,6 +1,7 @@
 package qemu
 
 import (
+	"context"
 	"net/http"
 	"net/url"
 	"strings"
@@ -23,7 +24,12 @@ func (l *Logger) Disclose(msg string) {
 		Path:   "/log",
 	}
 
-	_, _ = http.Post(url.String(), "application/json", strings.NewReader(msg))
+	req, _ := http.NewRequestWithContext(context.Background(), http.MethodPost, url.String(), strings.NewReader(msg))
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := http.DefaultClient.Do(req)
+	if err == nil {
+		defer resp.Body.Close()
+	}
 }
 
 // Close is a no-op.

bootstrapper/internal/kubernetes/k8sapi/util.go

@@ -259,13 +259,18 @@ func (k *KubernetesUtil) setupGCPPodNetwork(ctx context.Context, nodeName, nodeP
 
 // FixCilium fixes https://github.com/cilium/cilium/issues/19958 but instead of a rollout restart of
 // the cilium daemonset, it only restarts the local cilium pod.
-func (k *KubernetesUtil) FixCilium(nodeNameK8s string) {
+func (k *KubernetesUtil) FixCilium(nodeNameK8s string, log *logger.Logger) {
 	// wait for cilium pod to be healthy
 	for {
 		time.Sleep(5 * time.Second)
-		resp, err := http.Get("http://127.0.0.1:9876/healthz")
+		req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, "http://127.0.0.1:9876/healthz", nil)
 		if err != nil {
-			fmt.Printf("waiting for local cilium daemonset pod not healthy: %v\n", err)
+			log.With(zap.Error(err)).Errorf("Unable to create request")
+			continue
+		}
+		resp, err := http.DefaultClient.Do(req)
+		if err != nil {
+			log.With(zap.Error(err)).Warnf("Waiting for local cilium daemonset pod not healthy")
 			continue
 		}
 		resp.Body.Close()
@@ -277,22 +282,21 @@ func (k *KubernetesUtil) FixCilium(nodeNameK8s string) {
 	// get cilium pod name
 	out, err := exec.CommandContext(context.Background(), "/bin/bash", "-c", "/run/state/bin/crictl ps -o json | jq -r '.containers[] | select(.metadata.name == \"cilium-agent\") | .podSandboxId'").CombinedOutput()
 	if err != nil {
-		fmt.Printf("getting pod id failed: %v: %v\n", err, string(out))
+		log.With(zap.Error(err)).Errorf("Getting pod id failed: %s", out)
 		return
 	}
 	outLines := strings.Split(string(out), "\n")
-	fmt.Println(outLines)
 	podID := outLines[len(outLines)-2]
 
 	// stop and delete pod
 	out, err = exec.CommandContext(context.Background(), "/run/state/bin/crictl", "stopp", podID).CombinedOutput()
 	if err != nil {
-		fmt.Printf("stopping cilium agent pod failed: %v: %v\n", err, string(out))
+		log.With(zap.Error(err)).Errorf("Stopping cilium agent pod failed: %s", out)
 		return
 	}
 	out, err = exec.CommandContext(context.Background(), "/run/state/bin/crictl", "rmp", podID).CombinedOutput()
 	if err != nil {
-		fmt.Printf("removing cilium agent pod failed: %v: %v\n", err, string(out))
+		log.With(zap.Error(err)).Errorf("Removing cilium agent pod failed: %s", out)
 	}
 }
 

bootstrapper/internal/kubernetes/k8sutil.go

@@ -25,5 +25,5 @@ type clusterUtil interface {
 	SetupGCPGuestAgent(kubectl k8sapi.Client, gcpGuestAgentConfiguration resources.Marshaler) error
 	StartKubelet() error
 	RestartKubelet() error
-	FixCilium(nodeNameK8s string)
+	FixCilium(nodeNameK8s string, log *logger.Logger)
 }

bootstrapper/internal/kubernetes/kubernetes.go

@@ -222,7 +222,7 @@ func (k *KubeWrapper) InitCluster(
 		return nil, fmt.Errorf("failed to setup k8s version ConfigMap: %v", err)
 	}
 
-	k.clusterUtil.FixCilium(nodeName)
+	k.clusterUtil.FixCilium(nodeName, log)
 
 	return k.GetKubeconfig()
 }
@@ -286,7 +286,7 @@ func (k *KubeWrapper) JoinCluster(ctx context.Context, args *kubeadm.BootstrapTo
 		return fmt.Errorf("joining cluster: %v; %w ", string(joinConfigYAML), err)
 	}
 
-	k.clusterUtil.FixCilium(nodeName)
+	k.clusterUtil.FixCilium(nodeName, log)
 
 	return nil
 }

bootstrapper/internal/kubernetes/kubernetes_test.go

@@ -579,7 +579,7 @@ func (s *stubClusterUtil) RestartKubelet() error {
 	return s.restartKubeletErr
 }
 
-func (s *stubClusterUtil) FixCilium(nodeName string) {
+func (s *stubClusterUtil) FixCilium(nodeName string, log *logger.Logger) {
 }
 
 type stubConfigProvider struct {

internal/watcher/validator_test.go

@@ -146,7 +146,10 @@ func TestUpdate(t *testing.T) {
 	require.NoError(validator.Update())
 
 	// client connection should fail now, since the server's validator expects a different OID from the client
-	_, err = testConnection(require, server.URL, clientOID)
+	resp, err = testConnection(require, server.URL, clientOID)
+	if err == nil {
+		defer resp.Body.Close()
+	}
 	assert.Error(err)
 }
 

state/cmd/main.go

@@ -134,6 +134,16 @@ func exportPCRs() error {
 		Host:   "10.42.0.1:8080", // QEMU metadata endpoint
 		Path:   "/pcrs",
 	}
-	_, err = http.Post(url.String(), "application/json", bytes.NewBuffer(pcrsPretty))
+	req, err := http.NewRequestWithContext(context.Background(), http.MethodPost, url.String(), bytes.NewBuffer(pcrsPretty))
+	if err != nil {
 		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	return nil
 }

verify/server/server_test.go

@@ -211,7 +211,9 @@ func TestGetAttestationHTTP(t *testing.T) {
 			httpServer := httptest.NewServer(http.HandlerFunc(server.getAttestationHTTP))
 			defer httpServer.Close()
 
-			resp, err := http.Get(httpServer.URL + tc.request)
+			req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, httpServer.URL+tc.request, nil)
+			require.NoError(err)
+			resp, err := http.DefaultClient.Do(req)
 			require.NoError(err)
 			defer resp.Body.Close()