// Copyright 2018 The Operator-SDK Authors
//
// 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 sdk

import "context"

// Handler reacts to events and outputs actions.
// If any intended action failed, the event would be re-triggered.
// For actions done before the failed action, there is no rollback.
type Handler interface {
	Handle(context.Context, Event) error
}

var (
	// RegisteredHandler is the user registered handler set by sdk.Handle()
	RegisteredHandler Handler
)
