alert-mgmt-01: k8s foundation and server bootstrap for alert management API

Add the foundational k8s layer for alert management:
- Client factory for dynamic and typed Kubernetes clients
- Namespace resolution helpers
- Auth context extraction from HTTP requests
- Core types (AlertingRuleSource, sortable slices)
- Shared vars (label names, configmap keys)
- PrometheusRule types and rule parsing/filtering helpers

Signed-off-by: Shirly Radco <sradco@redhat.com>
Signed-off-by: João Vilaça <jvilaca@redhat.com>
Signed-off-by: Aviv Litman <alitman@redhat.com>
Signed-off-by: machadovilaca <machadovilaca@gmail.com>
Co-authored-by: AI Assistant <noreply@cursor.com>

Author: sradco

cmd/plugin-backend.go

@@ -8,15 +8,16 @@ import (
 	"strconv"
 	"strings"
 
-	server "github.com/openshift/monitoring-plugin/pkg"
 	"github.com/sirupsen/logrus"
+
+	server "github.com/openshift/monitoring-plugin/pkg"
 )
 
 var (
 	portArg             = flag.Int("port", 0, "server port to listen on (default: 9443)\nports 9444 and 9445 reserved for other use")
 	certArg             = flag.String("cert", "", "cert file path to enable TLS (disabled by default)")
 	keyArg              = flag.String("key", "", "private key file path to enable TLS (disabled by default)")
-	featuresArg         = flag.String("features", "", "enabled features, comma separated.\noptions: ['acm-alerting', 'incidents', 'dev-config', 'perses-dashboards']")
+	featuresArg         = flag.String("features", "", "enabled features, comma separated.\noptions: ['acm-alerting', 'incidents', 'dev-config', 'perses-dashboards', 'alert-management-api']")
 	staticPathArg       = flag.String("static-path", "", "static files path to serve frontend (default: './web/dist')")
 	configPathArg       = flag.String("config-path", "", "config files path (default: './config')")
 	pluginConfigArg     = flag.String("plugin-config-path", "", "plugin yaml configuration")

go.mod

@@ -6,55 +6,87 @@ require (
 	github.com/evanphx/json-patch v4.12.0+incompatible
 	github.com/gorilla/handlers v1.5.2
 	github.com/gorilla/mux v1.8.1
+	github.com/onsi/ginkgo/v2 v2.22.0
+	github.com/onsi/gomega v1.36.1
+	github.com/openshift/api v0.0.0-20251122153900-88cca31a44c9
+	github.com/openshift/client-go v0.0.0-20251123231646-4685125c2287
 	github.com/openshift/library-go v0.0.0-20240905123346-5bdbfe35a6f5
+	github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.87.0
+	github.com/prometheus-operator/prometheus-operator/pkg/client v0.87.0
+	github.com/prometheus/common v0.67.4
+	github.com/prometheus/prometheus v0.308.0
 	github.com/sirupsen/logrus v1.9.3
-	github.com/stretchr/testify v1.9.0
+	github.com/stretchr/testify v1.11.1
 	gopkg.in/yaml.v2 v2.4.0
-	k8s.io/api v0.31.1
-	k8s.io/apiserver v0.30.3
-	k8s.io/client-go v0.31.1
+	k8s.io/api v0.34.2
+	k8s.io/apimachinery v0.34.2
+	k8s.io/apiserver v0.34.2
+	k8s.io/client-go v0.34.2
 )
 
 require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/emicklei/go-restful/v3 v3.12.1 // indirect
+	github.com/dennwc/varint v1.0.0 // indirect
+	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/fsnotify/fsnotify v1.7.0 // indirect
-	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
-	github.com/go-logr/logr v1.4.2 // indirect
-	github.com/go-openapi/jsonpointer v0.21.0 // indirect
-	github.com/go-openapi/jsonreference v0.21.0 // indirect
-	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-openapi/jsonpointer v0.22.1 // indirect
+	github.com/go-openapi/jsonreference v0.21.2 // indirect
+	github.com/go-openapi/swag v0.25.1 // indirect
+	github.com/go-openapi/swag/cmdutils v0.25.1 // indirect
+	github.com/go-openapi/swag/conv v0.25.1 // indirect
+	github.com/go-openapi/swag/fileutils v0.25.1 // indirect
+	github.com/go-openapi/swag/jsonname v0.25.1 // indirect
+	github.com/go-openapi/swag/jsonutils v0.25.1 // indirect
+	github.com/go-openapi/swag/loading v0.25.1 // indirect
+	github.com/go-openapi/swag/mangling v0.25.1 // indirect
+	github.com/go-openapi/swag/netutils v0.25.1 // indirect
+	github.com/go-openapi/swag/stringutils v0.25.1 // indirect
+	github.com/go-openapi/swag/typeutils v0.25.1 // indirect
+	github.com/go-openapi/swag/yamlutils v0.25.1 // indirect
+	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.4 // indirect
-	github.com/google/gnostic-models v0.6.8 // indirect
-	github.com/google/go-cmp v0.6.0 // indirect
-	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/gnostic-models v0.7.0 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/pprof v0.0.0-20250923004556-9e5a51aed1e8 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
+	github.com/grafana/regexp v0.0.0-20250905093917-f7b3be9d1853 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // 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/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/spf13/pflag v1.0.6 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
-	golang.org/x/net v0.34.0 // indirect
-	golang.org/x/oauth2 v0.25.0 // indirect
-	golang.org/x/sys v0.29.0 // indirect
-	golang.org/x/term v0.28.0 // indirect
-	golang.org/x/text v0.21.0 // indirect
-	golang.org/x/time v0.9.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/net v0.46.0 // indirect
+	golang.org/x/oauth2 v0.32.0 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	golang.org/x/term v0.36.0 // indirect
+	golang.org/x/text v0.30.0 // indirect
+	golang.org/x/time v0.13.0 // indirect
+	golang.org/x/tools v0.37.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/apimachinery v0.31.1 // indirect
+	k8s.io/apiextensions-apiserver v0.34.2 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20240808142205-8e686545bdb8 // indirect
-	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect
-	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
-	sigs.k8s.io/yaml v1.4.0 // indirect
+	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
+	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 // indirect
+	sigs.k8s.io/controller-runtime v0.22.3 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // 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
 )