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|
package kong
import (
"context"
"encoding/json"
"errors"
"github.com/kong/go-kong/kong/custom"
)
// CustomEntityService handles custom entities in Kong.
type CustomEntityService service
// Get fetches a custom entity. The primary key and all relations of the
// entity must be populated in entity.
func (s *CustomEntityService) Get(ctx context.Context,
entity custom.Entity) (custom.Entity, error) {
def := s.client.Lookup(entity.Type())
if def == nil {
return nil, errors.New("entity '" + string(entity.Type()) +
"' not registered")
}
queryPath, err := def.GetEndpoint(entity)
if err != nil {
return nil, err
}
req, err := s.client.NewRequest("GET", queryPath, nil, nil)
if err != nil {
return nil, err
}
var object custom.Object
_, err = s.client.Do(ctx, req, &object)
if err != nil {
return nil, err
}
entity.SetObject(object)
return entity, nil
}
// Create creates a custom entity based on entity.
// All required fields must be present in entity.
func (s *CustomEntityService) Create(ctx context.Context,
entity custom.Entity) (custom.Entity, error) {
def := s.client.Lookup(entity.Type())
if def == nil {
return nil, errors.New("entity '" + string(entity.Type()) +
"' not registered")
}
method := "POST"
queryPath, err := def.PostEndpoint(entity)
if err != nil {
return nil, err
}
if entity.Object() != nil {
if _, ok := entity.Object()["id"]; ok {
queryPath, err = def.PatchEndpoint(entity)
if err != nil {
return nil, err
}
method = "PUT"
}
}
o := entity.Object()
// Necessary to Marshal an empty map
// as {} and not null
if o == nil || len(o) == 0 {
o = make(map[string]interface{})
}
req, err := s.client.NewRequest(method, queryPath, nil, o)
if err != nil {
return nil, err
}
var object custom.Object
_, err = s.client.Do(ctx, req, &object)
if err != nil {
return nil, err
}
entity.SetObject(object)
return entity, nil
}
// Update updates a custom entity in Kong.
func (s *CustomEntityService) Update(ctx context.Context,
entity custom.Entity) (custom.Entity, error) {
def := s.client.Lookup(entity.Type())
if def == nil {
return nil, errors.New("entity '" + string(entity.Type()) +
"' not registered")
}
queryPath, err := def.PatchEndpoint(entity)
if err != nil {
return nil, err
}
o := entity.Object()
// Necessary to Marshal an empty map
// as {} and not null
if o == nil || len(o) == 0 {
o = make(map[string]interface{})
}
req, err := s.client.NewRequest("PATCH", queryPath, nil, o)
if err != nil {
return nil, err
}
var object custom.Object
_, err = s.client.Do(ctx, req, &object)
if err != nil {
return nil, err
}
entity.SetObject(object)
return entity, nil
}
// Delete deletes a custom entity in Kong.
func (s *CustomEntityService) Delete(ctx context.Context,
entity custom.Entity) error {
def := s.client.Lookup(entity.Type())
if def == nil {
return errors.New("entity '" + string(entity.Type()) +
"' not registered")
}
queryPath, err := def.PatchEndpoint(entity)
if err != nil {
return err
}
req, err := s.client.NewRequest("DELETE", queryPath, nil, nil)
if err != nil {
return err
}
_, err = s.client.Do(ctx, req, nil)
return err
}
// List fetches all custom entities based on relations
func (s *CustomEntityService) List(ctx context.Context, opt *ListOpt,
entity custom.Entity) ([]custom.Entity, *ListOpt, error) {
def := s.client.Lookup(entity.Type())
if def == nil {
return nil, nil, errors.New("entity '" + string(entity.Type()) +
"' not registered")
}
queryPath, err := def.ListEndpoint(entity)
if err != nil {
return nil, nil, err
}
data, next, err := s.client.list(ctx, queryPath, opt)
if err != nil {
return nil, nil, err
}
var entities []custom.Entity
for _, o := range data {
b, err := o.MarshalJSON()
if err != nil {
return nil, nil, err
}
var object custom.Object
err = json.Unmarshal(b, &object)
if err != nil {
return nil, nil, err
}
e := custom.NewEntityObject(entity.Type())
e.SetObject(object)
for k, v := range entity.GetAllRelations() {
e.AddRelation(k, v)
}
entities = append(entities, e)
}
return entities, next, nil
}
// ListAll fetches all custom entities based on relations
func (s *CustomEntityService) ListAll(ctx context.Context,
entity custom.Entity) ([]custom.Entity, error) {
var entities, data []custom.Entity
var err error
opt := &ListOpt{Size: pageSize}
for opt != nil {
data, opt, err = s.List(ctx, opt, entity)
if err != nil {
return nil, err
}
entities = append(entities, data...)
}
return entities, nil
}
|
