sigs.k8s.io/kueue@v0.6.2/pkg/visibility/server.go (about)

     1  // Copyright 2023 The Kubernetes Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package visibility
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  	"net"
    21  	"strings"
    22  
    23  	"sigs.k8s.io/kueue/apis/visibility/v1alpha1"
    24  	generatedopenapi "sigs.k8s.io/kueue/apis/visibility/v1alpha1/openapi"
    25  	"sigs.k8s.io/kueue/pkg/queue"
    26  	"sigs.k8s.io/kueue/pkg/visibility/api"
    27  
    28  	openapinamer "k8s.io/apiserver/pkg/endpoints/openapi"
    29  	genericapiserver "k8s.io/apiserver/pkg/server"
    30  	genericoptions "k8s.io/apiserver/pkg/server/options"
    31  	"k8s.io/client-go/pkg/version"
    32  	_ "k8s.io/component-base/metrics/prometheus/restclient" // for client-go metrics registration
    33  	ctrl "sigs.k8s.io/controller-runtime"
    34  )
    35  
    36  var (
    37  	setupLog = ctrl.Log.WithName("visibility-server")
    38  )
    39  
    40  type server struct {
    41  	*genericapiserver.GenericAPIServer
    42  }
    43  
    44  // +kubebuilder:rbac:groups=flowcontrol.apiserver.k8s.io,resources=prioritylevelconfigurations,verbs=list;watch
    45  // +kubebuilder:rbac:groups=flowcontrol.apiserver.k8s.io,resources=flowschemas,verbs=list;watch
    46  // +kubebuilder:rbac:groups=flowcontrol.apiserver.k8s.io,resources=flowschemas/status,verbs=patch
    47  
    48  // CreateAndStartVisibilityServer creates visibility server injecting KueueManager and starts it
    49  func CreateAndStartVisibilityServer(kueueMgr *queue.Manager, ctx context.Context) {
    50  	config := newVisibilityServerConfig()
    51  	if err := applyVisibilityServerOptions(config); err != nil {
    52  		setupLog.Error(err, "Unable to apply VisibilityServerOptions")
    53  	}
    54  
    55  	visibilityServer, err := config.Complete().New("visibility-server", genericapiserver.NewEmptyDelegate())
    56  	if err != nil {
    57  		setupLog.Error(err, "Unable to create visibility server")
    58  	}
    59  
    60  	if err := api.Install(visibilityServer, kueueMgr); err != nil {
    61  		setupLog.Error(err, "Unable to install visibility.kueue.x-k8s.io/v1alpha1 API")
    62  	}
    63  
    64  	s := &server{visibilityServer}
    65  	if err := s.GenericAPIServer.PrepareRun().Run(ctx.Done()); err != nil {
    66  		setupLog.Error(err, "Error running visibility server")
    67  	}
    68  }
    69  
    70  func applyVisibilityServerOptions(config *genericapiserver.RecommendedConfig) error {
    71  	o := genericoptions.NewRecommendedOptions("", api.Codecs.LegacyCodec(v1alpha1.SchemeGroupVersion))
    72  	o.Etcd = nil
    73  	o.SecureServing.BindPort = 8082
    74  	// The directory where TLS certs will be created
    75  	o.SecureServing.ServerCert.CertDirectory = "/tmp"
    76  
    77  	if err := o.SecureServing.MaybeDefaultWithSelfSignedCerts("localhost", nil, []net.IP{net.ParseIP("127.0.0.1")}); err != nil {
    78  		return fmt.Errorf("error creating self-signed certificates: %v", err)
    79  	}
    80  	return o.ApplyTo(config)
    81  }
    82  
    83  func newVisibilityServerConfig() *genericapiserver.RecommendedConfig {
    84  	c := genericapiserver.NewRecommendedConfig(api.Codecs)
    85  	versionGet := version.Get()
    86  	c.Config.Version = &versionGet
    87  	// enable OpenAPI schemas
    88  	c.Config.OpenAPIConfig = genericapiserver.DefaultOpenAPIConfig(generatedopenapi.GetOpenAPIDefinitions, openapinamer.NewDefinitionNamer(api.Scheme))
    89  	c.Config.OpenAPIV3Config = genericapiserver.DefaultOpenAPIV3Config(generatedopenapi.GetOpenAPIDefinitions, openapinamer.NewDefinitionNamer(api.Scheme))
    90  	c.Config.OpenAPIConfig.Info.Title = "Kueue visibility-server"
    91  	c.Config.OpenAPIV3Config.Info.Title = "Kueue visibility-server"
    92  	c.Config.OpenAPIConfig.Info.Version = strings.Split(c.Config.Version.String(), "-")[0]
    93  	c.Config.OpenAPIV3Config.Info.Version = strings.Split(c.Config.Version.String(), "-")[0]
    94  
    95  	c.EnableMetrics = true
    96  
    97  	return c
    98  }