// Copyright 2019 Drone IO, Inc.
//
// 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.

// +build oss

package kube

import (
	"context"

	"github.com/drone/drone/core"
)

type noop struct{}

// FromConfig returns a no-op Kubernetes scheduler.
func FromConfig(conf Config) (core.Scheduler, error) {
	return new(noop), nil
}

func (noop) Schedule(context.Context, *core.Stage) error {
	return nil
}

func (noop) Request(context.Context, core.Filter) (*core.Stage, error) {
	return nil, nil
}

func (noop) Cancel(context.Context, int64) error {
	return nil
}

func (noop) Cancelled(context.Context, int64) (bool, error) {
	return false, nil
}

func (noop) Stats(context.Context) (interface{}, error) {
	return nil, nil
}