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pod.go
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pod.go
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package v1
import (
"fmt"
"log"
"reflect"
"github.com/wwmoraes/kubegraph/internal/adapter"
coreV1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
)
type podAdapter struct {
adapter.ResourceData
}
func init() {
adapter.Register(&podAdapter{
adapter.ResourceData{
ResourceType: reflect.TypeOf(&coreV1.Pod{}),
},
})
}
func (thisAdapter *podAdapter) tryCastObject(obj runtime.Object) (*coreV1.Pod, error) {
casted, ok := obj.(*coreV1.Pod)
if !ok {
return nil, fmt.Errorf("unable to cast object %s to %s", reflect.TypeOf(obj), thisAdapter.GetType().String())
}
return casted, nil
}
// GetType returns the reflected type of the k8s kind managed by thisAdapter instance
func (thisAdapter *podAdapter) GetType() reflect.Type {
return thisAdapter.ResourceType
}
// Create add a graph node for the given object and stores it for further actions
func (thisAdapter *podAdapter) Create(statefulGraph adapter.StatefulGraph, obj runtime.Object) (adapter.Node, error) {
resource, err := thisAdapter.tryCastObject(obj)
if err != nil {
return nil, err
}
name := fmt.Sprintf("%s.%s~%s", resource.APIVersion, resource.Kind, resource.Name)
return statefulGraph.AddStyledNode(thisAdapter.GetType(), obj, name, resource.Name, "icons/pod.svg")
}
// Connect creates and edge between the given node and an object on thisAdapter adapter
func (thisAdapter *podAdapter) Connect(statefulGraph adapter.StatefulGraph, source adapter.Node, targetName string) (adapter.Edge, error) {
return statefulGraph.LinkNode(source, thisAdapter.GetType(), targetName)
}
// Configure connects the resources on thisAdapter adapter with its dependencies
func (thisAdapter *podAdapter) Configure(statefulGraph adapter.StatefulGraph) error {
configMapAdapter, err := adapter.Get(reflect.TypeOf(&coreV1.ConfigMap{}))
if err != nil {
log.Println(fmt.Errorf("warning[%s configure]: %v", thisAdapter.GetType().String(), err))
}
secretAdapter, err := adapter.Get(reflect.TypeOf(&coreV1.Secret{}))
if err != nil {
log.Println(fmt.Errorf("warning[%s configure]: %v", thisAdapter.GetType().String(), err))
}
pvcAdapter, err := adapter.Get(reflect.TypeOf(&coreV1.PersistentVolumeClaim{}))
if err != nil {
log.Println(fmt.Errorf("warning[%s configure]: %v", thisAdapter.GetType().String(), err))
}
saAdapter, err := adapter.Get(reflect.TypeOf(&coreV1.ServiceAccount{}))
if err != nil {
log.Println(fmt.Errorf("warning[%s configure]: %v", thisAdapter.GetType().String(), err))
}
objects, err := statefulGraph.GetObjects(thisAdapter.GetType())
if err != nil {
return err
}
for resourceName, resourceObject := range objects {
resource, err := thisAdapter.tryCastObject(resourceObject)
if err != nil {
return err
}
resourceNode, err := statefulGraph.GetNode(thisAdapter.GetType(), resourceName)
if err != nil {
return err
}
for _, volume := range resource.Spec.Volumes {
if volume.ConfigMap != nil && configMapAdapter != nil {
_, err := configMapAdapter.Connect(statefulGraph, resourceNode, volume.ConfigMap.Name)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
} else if volume.Secret != nil && secretAdapter != nil {
_, err := secretAdapter.Connect(statefulGraph, resourceNode, volume.Secret.SecretName)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
} else if volume.PersistentVolumeClaim != nil && pvcAdapter != nil {
_, err := pvcAdapter.Connect(statefulGraph, resourceNode, volume.PersistentVolumeClaim.ClaimName)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
} else if projectedVolume := volume.Projected; projectedVolume != nil {
for _, projectionSource := range projectedVolume.Sources {
if projectionSource.ConfigMap != nil && configMapAdapter != nil {
_, err := configMapAdapter.Connect(statefulGraph, resourceNode, projectionSource.ConfigMap.Name)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
} else if projectionSource.Secret != nil && secretAdapter != nil {
_, err := secretAdapter.Connect(statefulGraph, resourceNode, projectionSource.Secret.Name)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
}
}
}
}
if resource.Spec.ServiceAccountName != "" && saAdapter != nil {
_, err := saAdapter.Connect(statefulGraph, resourceNode, resource.Spec.ServiceAccountName)
if err != nil {
fmt.Println(fmt.Errorf("%s configure error: %w", thisAdapter.GetType().String(), err))
}
}
}
return nil
}