diff --git a/Dockerfile.kubebuilder b/Dockerfile.kubebuilder index 16d562ea..0fa41894 100644 --- a/Dockerfile.kubebuilder +++ b/Dockerfile.kubebuilder @@ -4,6 +4,8 @@ ARG TARGETOS ARG TARGETARCH # Path of our go.mod ARG GO_MOD_PATH=. +ARG GO_MAIN_PATH=cmd/main.go +ENV GO_MAIN_PATH=${GO_MAIN_PATH} ARG GOCACHE=/root/.cache/go-build ENV GOCACHE=${GOCACHE} @@ -28,7 +30,7 @@ ENV GOOS=${TARGETOS:-linux} ENV GOARCH=${TARGETARCH} RUN --mount=type=cache,target=/go/pkg/mod/ \ --mount=type=cache,target=${GOCACHE} \ - go build -a -o manager cmd/main.go + go build -a -o manager ${GO_MAIN_PATH} # Use distroless as minimal base image to package the manager binary # Refer to https://github.com/GoogleContainerTools/distroless for more details diff --git a/Tiltfile b/Tiltfile index da22cf74..cc1ab702 100644 --- a/Tiltfile +++ b/Tiltfile @@ -27,6 +27,16 @@ def kubebuilder_binary_files(path): """ return [path + '/cmd', path + '/api', path + '/internal', path + '/go.mod', path + '/go.sum'] +########### Hypervisors kubernetes client demo +docker_build('ghcr.io/cobaltcore-dev/cortex-hypervisors-demo', '.', + dockerfile='Dockerfile.kubebuilder', + build_args={'GO_MOD_PATH': 'hypervisors', 'GO_MAIN_PATH': '.'}, + only=['hypervisors/', 'internal/', 'go.mod', 'go.sum'], +) +local('sh helm/sync.sh hypervisors/demo/chart') +k8s_yaml(helm('hypervisors/demo/chart', name='cortex-hypervisors-demo', values=[tilt_values])) +k8s_resource('demo', labels=['Demo']) + ########### Reservations Operator & CRDs docker_build('ghcr.io/cobaltcore-dev/cortex-reservations-operator', '.', dockerfile='Dockerfile.kubebuilder', diff --git a/hypervisors/demo/chart/.helmignore b/hypervisors/demo/chart/.helmignore new file mode 100644 index 00000000..7d92f7fb --- /dev/null +++ b/hypervisors/demo/chart/.helmignore @@ -0,0 +1,25 @@ +# Patterns to ignore when building Helm packages. +# Operating system files +.DS_Store + +# Version control directories +.git/ +.gitignore +.bzr/ +.hg/ +.hgignore +.svn/ + +# Backup and temporary files +*.swp +*.tmp +*.bak +*.orig +*~ + +# IDE and editor-related files +.idea/ +.vscode/ + +# Helm chart artifacts +dist/chart/*.tgz diff --git a/hypervisors/demo/chart/Chart.lock b/hypervisors/demo/chart/Chart.lock new file mode 100644 index 00000000..db4c5823 --- /dev/null +++ b/hypervisors/demo/chart/Chart.lock @@ -0,0 +1,6 @@ +dependencies: +- name: owner-info + repository: oci://ghcr.io/sapcc/helm-charts + version: 1.0.0 +digest: sha256:7643f231cc4ebda347fd12ec62fe4445c280e2b71d27eec555f3025290f5038f +generated: "2025-08-26T10:55:05.888651+02:00" diff --git a/hypervisors/demo/chart/Chart.yaml b/hypervisors/demo/chart/Chart.yaml new file mode 100644 index 00000000..f2f54869 --- /dev/null +++ b/hypervisors/demo/chart/Chart.yaml @@ -0,0 +1,14 @@ +apiVersion: v2 +name: cortex-hypervisors-client-demo +description: A Helm chart to distribute the cortex hypervisors client demo. +type: application +version: 0.1.0 +appVersion: "latest" +icon: "https://example.com/icon.png" +dependencies: + # Owner info adds a configmap to the kubernetes cluster with information on + # the service owner. This makes it easier to find out who to contact in case + # of issues. See: https://github.com/sapcc/helm-charts/pkgs/container/helm-charts%2Fowner-info + - name: owner-info + repository: oci://ghcr.io/sapcc/helm-charts + version: 1.0.0 diff --git a/hypervisors/demo/chart/charts/owner-info-1.0.0.tgz b/hypervisors/demo/chart/charts/owner-info-1.0.0.tgz new file mode 100644 index 00000000..2032ead9 Binary files /dev/null and b/hypervisors/demo/chart/charts/owner-info-1.0.0.tgz differ diff --git a/hypervisors/demo/chart/templates/_helpers.tpl b/hypervisors/demo/chart/templates/_helpers.tpl new file mode 100644 index 00000000..8ab463a1 --- /dev/null +++ b/hypervisors/demo/chart/templates/_helpers.tpl @@ -0,0 +1,50 @@ +{{- define "chart.name" -}} +{{- if .Chart }} + {{- if .Chart.Name }} + {{- .Chart.Name | trunc 63 | trimSuffix "-" }} + {{- else if .Values.nameOverride }} + {{ .Values.nameOverride | trunc 63 | trimSuffix "-" }} + {{- else }} + reservations + {{- end }} +{{- else }} + reservations +{{- end }} +{{- end }} + + +{{- define "chart.labels" -}} +{{- if .Chart.AppVersion -}} +app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} +{{- end }} +{{- if .Chart.Version }} +helm.sh/chart: {{ .Chart.Version | quote }} +{{- end }} +app.kubernetes.io/name: {{ include "chart.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +app.kubernetes.io/managed-by: {{ .Release.Service }} +{{- end }} + + +{{- define "chart.selectorLabels" -}} +app.kubernetes.io/name: {{ include "chart.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +{{- end }} + + +{{- define "chart.hasMutatingWebhooks" -}} +{{- $hasMutating := false }} +{{- range . }} + {{- if eq .type "mutating" }} + $hasMutating = true }}{{- end }} +{{- end }} +{{ $hasMutating }}}}{{- end }} + + +{{- define "chart.hasValidatingWebhooks" -}} +{{- $hasValidating := false }} +{{- range . }} + {{- if eq .type "validating" }} + $hasValidating = true }}{{- end }} +{{- end }} +{{ $hasValidating }}}}{{- end }} diff --git a/hypervisors/demo/chart/templates/demo.yaml b/hypervisors/demo/chart/templates/demo.yaml new file mode 100644 index 00000000..54cca0b4 --- /dev/null +++ b/hypervisors/demo/chart/templates/demo.yaml @@ -0,0 +1,63 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: demo + namespace: {{ .Release.Namespace }} + labels: + {{- include "chart.labels" . | nindent 4 }} +spec: + selector: + matchLabels: + {{- include "chart.selectorLabels" . | nindent 6 }} + template: + metadata: + annotations: + kubectl.kubernetes.io/default-container: demo + labels: + {{- include "chart.labels" . | nindent 8 }} + spec: + containers: + - name: demo + command: + # Created by kubebuilder Dockerfile + - /manager + image: {{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }} + volumeMounts: + - name: demo-config-volume + mountPath: /etc/config + - name: demo-secrets-volume + mountPath: /etc/secrets + readOnly: true + volumes: + # Custom values to configure the demo. + - name: demo-config-volume + configMap: + name: demo-config + - name: demo-secrets-volume + secret: + secretName: demo-secrets +--- +apiVersion: v1 +kind: ConfigMap +metadata: + name: demo-config +data: + conf.json: |- + {{- if .Values.demo.conf }} + {{ toJson .Values.demo.conf }} + {{- else }} + {} + {{- end }} +--- +apiVersion: v1 +kind: Secret +metadata: + name: demo-secrets +type: Opaque +data: + secrets.json: |- + {{- if .Values.demo.secrets }} + {{ toJson .Values.demo.secrets | b64enc }} + {{- else }} + {{ "{}" | b64enc }} + {{- end }} \ No newline at end of file diff --git a/hypervisors/demo/chart/values.yaml b/hypervisors/demo/chart/values.yaml new file mode 100644 index 00000000..6ca92350 --- /dev/null +++ b/hypervisors/demo/chart/values.yaml @@ -0,0 +1,25 @@ +# This file is safe from kubebuilder edit --plugins=helm/v1-alpha +# If you want to re-generate, add the --force flag. + +owner-info: + enabled: true + helm-chart-url: "https://github.com/cobaltcore-dev/cortex/hypervisors/demo/dist/chart" + maintainers: + - "p.matthes@sap.com" + - "markus.wieland@sap.com" + - "arno.uhlig@sap.com" + support-group: "workload-management" + service: "cortex-hypervisors-demo" + +image: + repository: ghcr.io/cobaltcore-dev/cortex-hypervisors-demo + +demo: + # Default configuration. + conf: {} + # Config provided here will override the config provided above. + secrets: + apiservers: + - host: + bearerToken: + caCrt: diff --git a/hypervisors/go.mod b/hypervisors/go.mod new file mode 100644 index 00000000..59abd211 --- /dev/null +++ b/hypervisors/go.mod @@ -0,0 +1,54 @@ +module github.com/cobaltcore-dev/cortex/reservations + +go 1.25.0 + +replace github.com/cobaltcore-dev/cortex => ../ + +require ( + github.com/cobaltcore-dev/cortex v0.0.0-00010101000000-000000000000 + github.com/cobaltcore-dev/openstack-hypervisor-operator v0.0.0-20250910084739-09a2101e23e7 + github.com/sapcc/go-bits v0.0.0-20250911190512-4d3226a57454 + k8s.io/client-go v0.34.0 + sigs.k8s.io/controller-runtime v0.22.1 +) + +require ( + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/emicklei/go-restful/v3 v3.12.2 // indirect + github.com/evanphx/json-patch/v5 v5.9.11 // indirect + github.com/fxamacker/cbor/v2 v2.9.0 // indirect + github.com/go-logr/logr v1.4.3 // indirect + github.com/go-openapi/jsonpointer v0.21.0 // indirect + github.com/go-openapi/jsonreference v0.21.0 // indirect + github.com/go-openapi/swag v0.23.1 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/google/gnostic-models v0.7.0 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.9.0 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/x448/float16 v0.8.4 // indirect + go.yaml.in/yaml/v2 v2.4.2 // indirect + go.yaml.in/yaml/v3 v3.0.4 // indirect + golang.org/x/net v0.43.0 // indirect + golang.org/x/oauth2 v0.30.0 // indirect + golang.org/x/sys v0.35.0 // indirect + golang.org/x/term v0.34.0 // indirect + golang.org/x/text v0.28.0 // indirect + golang.org/x/time v0.12.0 // indirect + google.golang.org/protobuf v1.36.8 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/api v0.34.0 // indirect + k8s.io/apimachinery v0.34.1 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b // indirect + k8s.io/utils v0.0.0-20250604170112-4c0f3b243397 // indirect + sigs.k8s.io/json v0.0.0-20241014173422-cfa47c3a1cc8 // indirect + sigs.k8s.io/randfill v1.0.0 // indirect + sigs.k8s.io/structured-merge-diff/v6 v6.3.0 // indirect + sigs.k8s.io/yaml v1.6.0 // indirect +) diff --git a/hypervisors/go.sum b/hypervisors/go.sum new file mode 100644 index 00000000..a2c703d9 --- /dev/null +++ b/hypervisors/go.sum @@ -0,0 +1,178 @@ +github.com/Masterminds/semver/v3 v3.4.0 h1:Zog+i5UMtVoCU8oKka5P7i9q9HgrJeGzI9SA1Xbatp0= +github.com/Masterminds/semver/v3 v3.4.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs= +github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cobaltcore-dev/openstack-hypervisor-operator v0.0.0-20250910084739-09a2101e23e7 h1:mNM3oDIHoapanAuAACGJpgnlczkV0xoulKLZNAmx8l8= +github.com/cobaltcore-dev/openstack-hypervisor-operator v0.0.0-20250910084739-09a2101e23e7/go.mod h1:VQI3HFNt9UZC+94JDN0QAlUAO05tSdhxHSf8VEFNGkI= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 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SPDX-License-Identifier: Apache-2.0 + +package library + +import ( + "context" + + "github.com/cobaltcore-dev/cortex/internal/conf" + v1 "github.com/cobaltcore-dev/openstack-hypervisor-operator/api/v1" + "github.com/sapcc/go-bits/must" + "k8s.io/client-go/rest" + "sigs.k8s.io/controller-runtime/pkg/client" +) + +// Client that can scrape the given hypervisor API servers. +type HypervisorsClient interface { + // Create clients for all api servers in the config if not already done. + Init() + // List all hypervisors in the infrastructure. + ListHypervisors(ctx context.Context) ([]v1.Hypervisor, error) +} + +// Default implementation of the HypervisorsClient interface. +type hypervisorsClient struct { + // Config containing credentials to contact the api servers. + Config Conf + // Authenticated kubernetes clients for each api server in the config. + clients []client.Client +} + +// Create a new client for scraping hypervisors with configuration loaded +// from /etc/config/conf.json overridden by /etc/secrets/secrets.json +func NewHypervisorsClient() HypervisorsClient { + config := conf.NewConfig[Conf]() + return &hypervisorsClient{Config: config} +} + +// Initialize the clients if there are none yet. +func (c *hypervisorsClient) Init() { + if c.clients != nil { + return + } + for _, apiServer := range c.Config.APIServers { + scheme := must.Return(v1.SchemeBuilder.Build()) + apiPath := apiServer.APIPath + if apiPath == "" { + apiPath = "/api" + } + rc := &rest.Config{ + Host: apiServer.Host, + APIPath: apiPath, + BearerToken: apiServer.BearerToken, + TLSClientConfig: rest.TLSClientConfig{ + CAData: []byte(apiServer.CACrt), + }, + } + cl := must.Return(client.New(rc, client.Options{Scheme: scheme})) + c.clients = append(c.clients, cl) + } +} + +// List all hypervisors in the infrastructure. +func (c *hypervisorsClient) ListHypervisors(ctx context.Context) ([]v1.Hypervisor, error) { + if c.clients == nil { + c.Init() + } + var hypervisors []v1.Hypervisor + for _, cl := range c.clients { + var hvList v1.HypervisorList + if err := cl.List(ctx, &hvList); err != nil { + return nil, err + } + hypervisors = append(hypervisors, hvList.Items...) + } + return hypervisors, nil +} diff --git a/hypervisors/library/conf.go b/hypervisors/library/conf.go new file mode 100644 index 00000000..f4774f27 --- /dev/null +++ b/hypervisors/library/conf.go @@ -0,0 +1,25 @@ +// Copyright 2025 SAP SE +// SPDX-License-Identifier: Apache-2.0 + +package library + +type Conf struct { + // The remote API servers to scrape hypervisors from. + APIServers []Kubeconfig `json:"apiservers,omitempty"` +} + +// Kubeconfig for connecting to the kubernetes apiserver. +// See: https://pkg.go.dev/k8s.io/client-go/rest#Config +type Kubeconfig struct { + // The base path to the kubernetes apiserver. Can be retrieved with: + // `kubectl config view --minify -o jsonpath="{.clusters[0].cluster.server}"` + Host string `json:"host,omitempty"` + // The API path that points to an API root. Defaults to `/api` if empty. + APIPath string `json:"apiPath,omitempty"` + // A valid bearer token for authentication. Can be generated with: + // `kubectl create token -n --duration 10m -o json` + BearerToken string `json:"bearerToken,omitempty"` + // The CA certificate for the kubernetes apiserver. Can be retrieved with: + // `kubectl get cm kube-root-ca.crt -o jsonpath="{['data']['ca\.crt']}"`` + CACrt string `json:"caCrt,omitempty"` +} diff --git a/hypervisors/main.go b/hypervisors/main.go new file mode 100644 index 00000000..fce79fdd --- /dev/null +++ b/hypervisors/main.go @@ -0,0 +1,24 @@ +// Copyright 2025 SAP SE +// SPDX-License-Identifier: Apache-2.0 + +package main + +import ( + "context" + "fmt" + "time" + + "github.com/cobaltcore-dev/cortex/reservations/library" + "github.com/sapcc/go-bits/must" +) + +func main() { + fmt.Println("Starting hypervisors client demo...") + client := library.NewHypervisorsClient() + client.Init() + for { + hypervisors := must.Return(client.ListHypervisors(context.Background())) + fmt.Printf("Found %d hypervisors\n", len(hypervisors)) + time.Sleep(10 * time.Second) + } +}