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internal/profile: move FromKubeconfig here to be used from other comm…
…ands Signed-off-by: Dr. Stefan Schimanski <stefan.schimanski@upbound.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| // Copyright 2024 Upbound Inc | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package profile | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/url" | ||
| "strings" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/client-go/rest" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
| clientcmdapi "k8s.io/client-go/tools/clientcmd/api" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| // FromKubeconfig finds the profile by a given user kubeconfig. It returns | ||
| // a related profile, the current group/namespace, and the controlplane if the | ||
| // kubeconfig points to a controlplane through mxe-router. | ||
| func FromKubeconfig(ctx context.Context, profiles map[string]Profile, conf *clientcmdapi.Config) (string, *Profile, types.NamespacedName, error) { | ||
| return findProfileByKubeconfig(ctx, profiles, conf, getIngressHost) | ||
| } | ||
|
|
||
| func findProfileByKubeconfig(ctx context.Context, profiles map[string]Profile, conf *clientcmdapi.Config, getIngressHost func(ctx context.Context, cfg *rest.Config) (string, error)) (string, *Profile, types.NamespacedName, error) { // nolint:gocyclo // TODO: shorten | ||
| // get base URL of Upbound profiles | ||
| profileURLs := make(map[string]string) | ||
| for name, p := range profiles { | ||
| if !p.IsSpace() { | ||
| continue | ||
| } | ||
| confCtx, ok := conf.Contexts[p.KubeContext] | ||
| if !ok { | ||
| continue | ||
| } | ||
| cluster, ok := conf.Clusters[confCtx.Cluster] | ||
| if !ok { | ||
| continue | ||
| } | ||
| profileURLs[name] = cluster.Server | ||
| } | ||
|
|
||
| // get user cluster URL | ||
| confCtx, ok := conf.Contexts[conf.CurrentContext] | ||
| if !ok { | ||
| return "", nil, types.NamespacedName{}, fmt.Errorf("current context %q not found in kubeconfig", conf.CurrentContext) | ||
| } | ||
| cluster, ok := conf.Clusters[confCtx.Cluster] | ||
| if !ok { | ||
| return "", nil, types.NamespacedName{}, fmt.Errorf("cluster %q not found in kubeconfig", confCtx.Cluster) | ||
| } | ||
|
|
||
| // find profile by URL | ||
| for name, profileURL := range profileURLs { | ||
| if strings.TrimSuffix(profileURL, "/") == strings.TrimSuffix(cluster.Server, "/") { | ||
| p := profiles[name] | ||
| ns := confCtx.Namespace | ||
| if ns == "" { | ||
| ns = corev1.NamespaceDefault | ||
| } | ||
| return name, &p, types.NamespacedName{Namespace: ns}, nil | ||
| } | ||
| url, err := url.Parse(profileURL) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
|
||
| // profile points to Spaces API? | ||
| if strings.HasPrefix(cluster.Server, strings.TrimSuffix(url.String(), "/")+"/") { | ||
| p := profiles[name] | ||
|
|
||
| ctp, found := ParseSpacesK8sURL(strings.TrimSuffix(cluster.Server, "/")) | ||
| if !found { | ||
| return "", nil, types.NamespacedName{}, fmt.Errorf("not connected to a control plane or Space") | ||
| } | ||
|
|
||
| return name, &p, ctp, nil | ||
| } | ||
| } | ||
|
|
||
| // still not found. Try ingresses. | ||
| for name, p := range profiles { | ||
| if !p.IsSpace() { | ||
| continue | ||
| } | ||
| pconf := conf.DeepCopy() | ||
| pconf.CurrentContext = p.KubeContext | ||
| cfg, err := clientcmd.NewDefaultClientConfig(*pconf, &clientcmd.ConfigOverrides{}).ClientConfig() | ||
| if err != nil { | ||
| continue | ||
| } | ||
| ingressHost, err := getIngressHost(ctx, cfg) | ||
| if err != nil { | ||
| continue | ||
| } | ||
| if !strings.HasPrefix(ingressHost, "https://") { | ||
| ingressHost = "https://" + ingressHost | ||
| } | ||
| if strings.HasPrefix(cluster.Server, strings.TrimSuffix(ingressHost, "/")+"/") { | ||
| ctp, found := ParseSpacesK8sURL(strings.TrimSuffix(cluster.Server, "/")) | ||
| if !found { | ||
| return "", nil, types.NamespacedName{}, fmt.Errorf("not connected to a control plane or Space") | ||
| } | ||
| return name, &p, ctp, nil | ||
| } | ||
| } | ||
|
|
||
| return "", nil, types.NamespacedName{}, nil | ||
| } | ||
|
|
||
| func getIngressHost(ctx context.Context, cfg *rest.Config) (string, error) { | ||
| cl, err := client.New(cfg, client.Options{}) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| mxpConfig := &corev1.ConfigMap{} | ||
| if err := cl.Get(ctx, types.NamespacedName{Name: "mxp-config", Namespace: "upbound-system"}, mxpConfig); err != nil { | ||
| return "", err | ||
| } | ||
| ingressHost := mxpConfig.Data["ingress.host"] | ||
| return ingressHost, nil | ||
| } |
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