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| 1 | +// Copyright 2025 Nutanix. All rights reserved. |
| 2 | +// SPDX-License-Identifier: Apache-2.0 |
| 3 | + |
| 4 | +package generic |
| 5 | + |
| 6 | +import ( |
| 7 | + "context" |
| 8 | + "fmt" |
| 9 | + "regexp" |
| 10 | + |
| 11 | + "github.com/regclient/regclient" |
| 12 | + "github.com/regclient/regclient/config" |
| 13 | + "github.com/regclient/regclient/types/ref" |
| 14 | + corev1 "k8s.io/api/core/v1" |
| 15 | + "k8s.io/apimachinery/pkg/types" |
| 16 | + clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1" |
| 17 | + ctrlclient "sigs.k8s.io/controller-runtime/pkg/client" |
| 18 | + |
| 19 | + carenv1 "github.com/nutanix-cloud-native/cluster-api-runtime-extensions-nutanix/api/v1alpha1" |
| 20 | + "github.com/nutanix-cloud-native/cluster-api-runtime-extensions-nutanix/pkg/webhook/preflight" |
| 21 | +) |
| 22 | + |
| 23 | +var ( |
| 24 | + registryMirrorVarPath = "cluster.spec.topology.variables[.name=clusterConfig].value.globalImageRegistryMirror" |
| 25 | + mirrorURLValidationRegex = regexp.MustCompile( |
| 26 | + `^https?://`, |
| 27 | + ) // in order to use regclient we need to pass just a hostname |
| 28 | + // this regex allows us to strip it so we can verify connectivity for this test. |
| 29 | +) |
| 30 | + |
| 31 | +type registyCheck struct { |
| 32 | + registryMirror *carenv1.GlobalImageRegistryMirror |
| 33 | + imageRegistry *carenv1.ImageRegistry |
| 34 | + field string |
| 35 | + kclient ctrlclient.Client |
| 36 | + cluster *clusterv1.Cluster |
| 37 | +} |
| 38 | + |
| 39 | +func (r *registyCheck) Name() string { |
| 40 | + return "RegistryCredentials" |
| 41 | +} |
| 42 | + |
| 43 | +func (r *registyCheck) Run(ctx context.Context) preflight.CheckResult { |
| 44 | + if r.registryMirror != nil { |
| 45 | + return r.checkRegistry( |
| 46 | + ctx, |
| 47 | + mirrorURLValidationRegex.ReplaceAllString(r.registryMirror.URL, ""), |
| 48 | + r.registryMirror.Credentials, |
| 49 | + ) |
| 50 | + } |
| 51 | + if r.imageRegistry != nil { |
| 52 | + return r.checkRegistry( |
| 53 | + ctx, |
| 54 | + mirrorURLValidationRegex.ReplaceAllString(r.imageRegistry.URL, ""), |
| 55 | + r.imageRegistry.Credentials, |
| 56 | + ) |
| 57 | + } |
| 58 | + return preflight.CheckResult{ |
| 59 | + Allowed: true, |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +func (r *registyCheck) checkRegistry( |
| 64 | + ctx context.Context, |
| 65 | + registryURL string, |
| 66 | + credentials *carenv1.RegistryCredentials, |
| 67 | +) preflight.CheckResult { |
| 68 | + result := preflight.CheckResult{ |
| 69 | + Allowed: false, |
| 70 | + } |
| 71 | + mirrorHost := config.Host{ |
| 72 | + Name: registryURL, |
| 73 | + } |
| 74 | + if credentials != nil && credentials.SecretRef != nil { |
| 75 | + mirrorCredentialsSecret := &corev1.Secret{} |
| 76 | + err := r.kclient.Get( |
| 77 | + ctx, |
| 78 | + types.NamespacedName{ |
| 79 | + Namespace: r.cluster.Namespace, |
| 80 | + Name: r.registryMirror.Credentials.SecretRef.Name, |
| 81 | + }, |
| 82 | + mirrorCredentialsSecret, |
| 83 | + ) |
| 84 | + if err != nil { |
| 85 | + result.Allowed = false |
| 86 | + result.Error = true |
| 87 | + result.Causes = append(result.Causes, |
| 88 | + preflight.Cause{ |
| 89 | + Message: fmt.Sprintf("failed to get Registry credentials Secret: %s", err), |
| 90 | + Field: fmt.Sprintf("%s.credentials.secretRef", registryMirrorVarPath), |
| 91 | + }, |
| 92 | + ) |
| 93 | + return result |
| 94 | + } |
| 95 | + username, ok := mirrorCredentialsSecret.Data["username"] |
| 96 | + if !ok { |
| 97 | + result.Allowed = false |
| 98 | + result.Error = true |
| 99 | + result.Causes = append(result.Causes, |
| 100 | + preflight.Cause{ |
| 101 | + Message: "failed to get username from Registry credentials Secret. secret must have field username.", |
| 102 | + Field: fmt.Sprintf("%s.credentials.secretRef", registryMirrorVarPath), |
| 103 | + }, |
| 104 | + ) |
| 105 | + return result |
| 106 | + } |
| 107 | + password, ok := mirrorCredentialsSecret.Data["password"] |
| 108 | + if !ok { |
| 109 | + result.Allowed = false |
| 110 | + result.Error = true |
| 111 | + result.Causes = append(result.Causes, |
| 112 | + preflight.Cause{ |
| 113 | + Message: "failed to get username from Registry credentials Secret. secret must have field password.", |
| 114 | + Field: fmt.Sprintf("%s.credentials.secretRef", registryMirrorVarPath), |
| 115 | + }, |
| 116 | + ) |
| 117 | + return result |
| 118 | + } |
| 119 | + mirrorHost.User = string(username) |
| 120 | + mirrorHost.Pass = string(password) |
| 121 | + if caCert, ok := mirrorCredentialsSecret.Data["ca.crt"]; ok { |
| 122 | + mirrorHost.RegCert = string(caCert) |
| 123 | + } |
| 124 | + } |
| 125 | + rc := regclient.New( |
| 126 | + regclient.WithConfigHost(mirrorHost), |
| 127 | + regclient.WithUserAgent("regclient/example"), |
| 128 | + ) |
| 129 | + mirrorRef, err := ref.NewHost(mirrorHost.Hostname) |
| 130 | + if err != nil { |
| 131 | + result.Allowed = false |
| 132 | + result.Error = true |
| 133 | + result.Causes = append(result.Causes, |
| 134 | + preflight.Cause{ |
| 135 | + Message: "failed to create a client to verify registry configuration", |
| 136 | + Field: registryMirrorVarPath, |
| 137 | + }, |
| 138 | + ) |
| 139 | + return result |
| 140 | + } |
| 141 | + _, err = rc.Ping(ctx, mirrorRef) // ping will return an error for anything that's not 200 |
| 142 | + if err != nil { |
| 143 | + result.Allowed = false |
| 144 | + result.Error = true |
| 145 | + result.Causes = append(result.Causes, |
| 146 | + preflight.Cause{ |
| 147 | + Message: fmt.Sprintf("failed to ping registry %s with err: %s", mirrorHost.Hostname, err.Error()), |
| 148 | + Field: registryMirrorVarPath, |
| 149 | + }, |
| 150 | + ) |
| 151 | + return result |
| 152 | + } |
| 153 | + result.Allowed = true |
| 154 | + result.Error = false |
| 155 | + return result |
| 156 | +} |
| 157 | + |
| 158 | +func newRegistryCheck( |
| 159 | + cd *checkDependencies, |
| 160 | +) []preflight.Check { |
| 161 | + checks := []preflight.Check{} |
| 162 | + if cd.genericClusterConfigSpec != nil && |
| 163 | + cd.genericClusterConfigSpec.GlobalImageRegistryMirror != nil { |
| 164 | + checks = append(checks, ®istyCheck{ |
| 165 | + field: "cluster.spec.topology.variables[.name=clusterConfig].value.globalImageRegistryMirror", |
| 166 | + kclient: cd.kclient, |
| 167 | + registryMirror: cd.genericClusterConfigSpec.GlobalImageRegistryMirror, |
| 168 | + cluster: cd.cluster, |
| 169 | + }) |
| 170 | + } |
| 171 | + if cd.genericClusterConfigSpec != nil && len(cd.genericClusterConfigSpec.ImageRegistries) > 0 { |
| 172 | + for i, registry := range cd.genericClusterConfigSpec.ImageRegistries { |
| 173 | + checks = append(checks, ®istyCheck{ |
| 174 | + field: fmt.Sprintf( |
| 175 | + "cluster.spec.topology.variables[.name=clusterConfig].value.imageRegistries[%d]", |
| 176 | + i, |
| 177 | + ), |
| 178 | + kclient: cd.kclient, |
| 179 | + imageRegistry: ®istry, |
| 180 | + cluster: cd.cluster, |
| 181 | + }) |
| 182 | + } |
| 183 | + } |
| 184 | + return checks |
| 185 | +} |
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