8ae203825b
Instead of endpoints being a flat list, it is now a list of "subsets"
where each is a struct of {Addresses, Ports}. To generate the list of
endpoints you need to take union of the Cartesian products of the
subsets. This is compact in the vast majority of cases, yet still
represents named ports and corner cases (e.g. each pod has a different
port number).
This also stores subsets in a deterministic order (sorted by hash) to
avoid spurious updates and comparison problems.
This is a fully compatible change - old objects and clients will
keepworking as long as they don't need the new functionality.
This is the prep for multi-port Services, which will add API to produce
endpoints in this new structure.
94 lines
3.3 KiB
Go
94 lines
3.3 KiB
Go
/*
|
|
Copyright 2014 Google Inc. All rights reserved.
|
|
|
|
Licensed under 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 endpoint
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
|
|
endptspkg "github.com/GoogleCloudPlatform/kubernetes/pkg/api/endpoints"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/validation"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/registry/generic"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/util/fielderrors"
|
|
)
|
|
|
|
// endpointsStrategy implements behavior for Endpoints
|
|
type endpointsStrategy struct {
|
|
runtime.ObjectTyper
|
|
api.NameGenerator
|
|
}
|
|
|
|
// Strategy is the default logic that applies when creating and updating Endpoint
|
|
// objects via the REST API.
|
|
var Strategy = endpointsStrategy{api.Scheme, api.SimpleNameGenerator}
|
|
|
|
// NamespaceScoped is true for endpoints.
|
|
func (endpointsStrategy) NamespaceScoped() bool {
|
|
return true
|
|
}
|
|
|
|
// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
|
|
func (endpointsStrategy) PrepareForCreate(obj runtime.Object) {
|
|
endpoints := obj.(*api.Endpoints)
|
|
endpoints.Subsets = endptspkg.RepackSubsets(endpoints.Subsets)
|
|
}
|
|
|
|
// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
|
|
func (endpointsStrategy) PrepareForUpdate(obj, old runtime.Object) {
|
|
newEndpoints := obj.(*api.Endpoints)
|
|
_ = old.(*api.Endpoints)
|
|
newEndpoints.Subsets = endptspkg.RepackSubsets(newEndpoints.Subsets)
|
|
}
|
|
|
|
// Validate validates a new endpoints.
|
|
func (endpointsStrategy) Validate(obj runtime.Object) fielderrors.ValidationErrorList {
|
|
return validation.ValidateEndpoints(obj.(*api.Endpoints))
|
|
}
|
|
|
|
// AllowCreateOnUpdate is true for endpoints.
|
|
func (endpointsStrategy) AllowCreateOnUpdate() bool {
|
|
return true
|
|
}
|
|
|
|
// ValidateUpdate is the default update validation for an end user.
|
|
func (endpointsStrategy) ValidateUpdate(obj, old runtime.Object) fielderrors.ValidationErrorList {
|
|
return validation.ValidateEndpointsUpdate(old.(*api.Endpoints), obj.(*api.Endpoints))
|
|
}
|
|
|
|
// MatchEndpoints returns a generic matcher for a given label and field selector.
|
|
func MatchEndpoints(label labels.Selector, field fields.Selector) generic.Matcher {
|
|
return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
|
|
endpoints, ok := obj.(*api.Endpoints)
|
|
if !ok {
|
|
return false, fmt.Errorf("not a endpoints")
|
|
}
|
|
fields := EndpointsToSelectableFields(endpoints)
|
|
return label.Matches(labels.Set(endpoints.Labels)) && field.Matches(fields), nil
|
|
})
|
|
}
|
|
|
|
// EndpointsToSelectableFields returns a label set that represents the object
|
|
// TODO: fields are not labels, and the validation rules for them do not apply.
|
|
func EndpointsToSelectableFields(endpoints *api.Endpoints) labels.Set {
|
|
return labels.Set{
|
|
"name": endpoints.Name,
|
|
}
|
|
}
|