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environment_service.go
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environment_service.go
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package k8s
import (
"github.com/pkg/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
"github.com/kyma-project/kyma/components/ui-api-layer/internal/gqlschema"
)
const envLabelSelector = "env=true"
type environmentService struct {
reLister RemoteEnvironmentLister
nsInterface corev1.NamespaceInterface
}
func newEnvironmentService(nsInterface corev1.NamespaceInterface, reLister RemoteEnvironmentLister) *environmentService {
return &environmentService{
nsInterface: nsInterface,
reLister: reLister,
}
}
func (svc *environmentService) List() ([]gqlschema.Environment, error) {
list, err := svc.nsInterface.List(metav1.ListOptions{
LabelSelector: envLabelSelector, // namespaces with label env=true are treated as environments
})
if err != nil {
return []gqlschema.Environment{}, errors.Wrap(err, "while listing environment mappings")
}
result := make([]gqlschema.Environment, 0)
for _, ns := range list.Items {
res, err := svc.reLister.ListInEnvironment(ns.Name)
if err != nil {
return []gqlschema.Environment{}, errors.Wrap(err, "while listing remote envs for env")
}
reNames := make([]string, 0)
for _, re := range res {
reNames = append(reNames, re.Name)
}
result = append(result, gqlschema.Environment{
Name: ns.Name,
RemoteEnvironments: reNames,
})
}
return result, nil
}
func (svc *environmentService) ListForRemoteEnvironment(reName string) ([]gqlschema.Environment, error) {
namespaces, err := svc.reLister.ListNamespacesFor(reName)
if err != nil {
return []gqlschema.Environment{}, errors.Wrap(err, "while listing namespaces")
}
result := make([]gqlschema.Environment, 0)
for _, ns := range namespaces {
res, err := svc.reLister.ListInEnvironment(ns)
if err != nil {
return []gqlschema.Environment{}, errors.Wrap(err, "while listing remote envs")
}
remoteEnvNames := make([]string, 0)
for _, re := range res {
remoteEnvNames = append(remoteEnvNames, re.Name)
}
result = append(result, gqlschema.Environment{
Name: ns,
RemoteEnvironments: remoteEnvNames,
})
}
return result, nil
}