kubernetes/metadata/job.go

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// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
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// 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 metadata

import (
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	k8s "k8s.io/client-go/kubernetes"
	"k8s.io/client-go/tools/cache"

	"github.com/elastic/elastic-agent-autodiscover/kubernetes"
	"github.com/elastic/elastic-agent-libs/config"
	"github.com/elastic/elastic-agent-libs/mapstr"
)

type job struct {
	store    cache.Store
	resource *Resource
}

// NewJobMetadataGenerator creates a metagen for job resources
func NewJobMetadataGenerator(cfg *config.C, jobs cache.Store, client k8s.Interface) MetaGen {
	return &job{
		resource: NewResourceMetadataGenerator(cfg, client),
		store:    jobs,
	}
}

// Generate generates job metadata from a resource object
// Metadata map is in the following form:
//
//	{
//		  "kubernetes": {},
//	   "some.ecs.field": "asdf"
//	}
//
// All Kubernetes fields that need to be stored under kuberentes. prefix are populetad by
// GenerateK8s method while fields that are part of ECS are generated by GenerateECS method
func (jb *job) Generate(obj kubernetes.Resource, opts ...FieldOptions) mapstr.M {
	ecsFields := jb.GenerateECS(obj)
	meta := mapstr.M{
		"kubernetes": jb.GenerateK8s(obj, opts...),
	}
	meta.DeepUpdate(ecsFields)
	return meta
}

// GenerateECS generates job ECS metadata from a resource object
func (jb *job) GenerateECS(obj kubernetes.Resource) mapstr.M {
	return jb.resource.GenerateECS(obj)
}

// GenerateK8s generates job metadata from a resource object
func (jb *job) GenerateK8s(obj kubernetes.Resource, opts ...FieldOptions) mapstr.M {
	_, ok := obj.(metav1.Object)
	if !ok {
		return nil
	}

	meta := jb.resource.GenerateK8s("job", obj, opts...)
	return meta
}

// GenerateFromName generates job metadata from a namespace name
func (jb *job) GenerateFromName(name string, opts ...FieldOptions) mapstr.M {
	if jb.store == nil {
		return nil
	}

	if obj, ok, _ := jb.store.GetByKey(name); ok {
		res, ok := obj.(kubernetes.Resource)
		if !ok {
			return nil
		}

		return jb.GenerateK8s(res, opts...)
	}

	return nil
}