component.go

/*

Licensed under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.gnu.org/licenses/agpl-3.0.html

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 settings

import (
	corev1 "k8s.io/api/core/v1"
	"sigs.k8s.io/controller-runtime/pkg/client"

	"k8s.libre.sh/application/settings/parameters"
	"k8s.libre.sh/meta"
	"k8s.libre.sh/objects"
	"k8s.libre.sh/objects/configmap"
	"k8s.libre.sh/objects/secret"
)

// +kubebuilder:object:generate=true
type Component struct {
	CommonMeta       *meta.ObjectMeta         `json:"commonMeta,omitempty"`
	SecretMeta       *meta.ObjectMeta         `json:"secretMeta,omitempty"`
	ConfigMeta       *meta.ObjectMeta         `json:"configMeta,omitempty"`
	DefaultType      parameters.ParameterType `json:"defaultType,omitempty"`
	DefaultMountType parameters.MountType     `json:"defaultMountType,omitempty"`
	//	Template             string     `json:"template,omitempty"`
	*ConfigSpec `json:",inline"`
}

func (s *Component) GetConfig() Config { return s.ConfigSpec }

func (s *Component) GetMeta() meta.Instance { return s.CommonMeta }

func (s *Component) GetSecretMeta() meta.Instance { return s.SecretMeta }

func (s *Component) GetConfigMapMeta() meta.Instance { return s.ConfigMeta }

func (s *Component) SetDefaults() {
	// TODO TO FIX DUPLICATE WITH INIT
	meta.SetObjectMeta(s.CommonMeta, s.SecretMeta)
	meta.SetObjectMeta(s.CommonMeta, s.ConfigMeta)
}

func (s *Component) GetObjects() map[int]objects.Object {

	cm := &configmap.ConfigMap{
		ObjectMeta: s.GetConfigMapMeta().(*meta.ObjectMeta),
	}

	secret := &secret.Secret{
		ObjectMeta: s.GetSecretMeta().(*meta.ObjectMeta),
	}

	objs := make(map[int]objects.Object, 2)

	//	meta.SetObjectMeta(s.CommonMeta, cm.ObjectMeta)
	//	meta.SetObjectMeta(s.CommonMeta, secret.ObjectMeta)

	// TODO REPLACE BY GET SECRET PARAMETERS & GET CONFIG PARAMETERS
	// params := s.GetConfig()

	for _, p := range *s.ConfigSpec.GetParameters() {
		// TODO check not mountLiteral ??
		if p.MountType == parameters.MountEnvFile &&
			p.Type == parameters.SecretParameter &&
			len(p.Value) > 0 {
			secret.Parameters = append(secret.Parameters, p)
		}
		if p.MountType == parameters.MountEnvFile &&
			p.Type == parameters.ConfigParameter &&
			len(p.Value) > 0 {
			cm.Parameters = append(cm.Parameters, p)
		}
	}

	// TODO IMPROVE
	if len(cm.Parameters) > 0 {
		objs[0] = cm
	}

	if len(secret.Parameters) > 0 {
		//	secret.Parameters = secretParameters
		if objs[0] == nil {
			objs[0] = secret

		} else {
			objs[1] = secret
		}
	}

	return objs
}

func (s *Component) Init(c client.Client) error {
	// TODO TO FIX DUPLICATE WITH SETDEFAULTS
	meta.SetObjectMeta(s.CommonMeta, s.ConfigMeta)
	meta.SetObjectMeta(s.CommonMeta, s.SecretMeta)
	// TODO ADD SECRET REFS HERE ??
	err := InitParametersValueFrom(s, c)

	if err != nil {
		return err
	}

	s.InitRandValues()

	err = s.InitTemplateValues(parameters.KeyPairValues(s.Parameters))

	return nil
}

// InitParametersValueFrom intialise the paremeters with values provided in external resources (secrets and configmaps) in the same namespace
// All parameters values are filled from those resources
func InitParametersValueFrom(s *Component, c client.Client) error {

	params := parameters.Parameters{}

	paramsByKey := parameters.ParametersByKey(s.Parameters)
	paramsBySecretSource, paramsByConfigMapSource := OrderByResourceRef(s.ConfigSpec)

	cm := &corev1.ConfigMap{}
	sec := &corev1.Secret{}

	cm.SetNamespace(s.CommonMeta.GetNamespace())
	sec.SetNamespace(s.CommonMeta.GetNamespace())

	for k, v := range paramsBySecretSource {
		sec.SetName(k)
		err := parameters.GetAndMergeParameters(v, paramsByKey, c, sec)
		if err != nil {
			return err
		}
	}

	for k, v := range paramsByConfigMapSource {
		cm.SetName(k)
		err := parameters.GetAndMergeParameters(v, paramsByKey, c, cm)
		if err != nil {
			return err
		}
	}

	for _, v := range paramsByKey {
		if v.MountType == parameters.MountEnvFile {
			if v.Type == parameters.ConfigParameter {
				v.Ref = s.GetConfigMapMeta().GetName()
			}
			if v.Type == parameters.SecretParameter {
				v.Ref = s.GetSecretMeta().GetName()
			}
		}
		params = append(params, v)
	}

	// if defaultMountType == EnvFile {

	//	}
	// TODO FIX THIS we need to check if we want to mount as EnvFile and reset old resources references
	s.SecretRefs = []string{}
	s.ConfigRefs = []string{}

	s.Parameters = &params

	return nil
}