// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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 api

import (
	"context"
	"time"
)

// ShutdownHookTime is the global shutdown hook time.
var ShutdownHookTime = time.Second * 5

// Module id a custom plugin interface, which defines the processing.
type Module interface {
	// Prepare would do some preparing workers, such build connection with external services.
	Prepare() error
	// Boot would start the module and return error when started failed. When a stop signal received
	// or an exception occurs, the shutdown function would be called.
	Boot(ctx context.Context)

	// Shutdown could do some clean job to close Module.
	Shutdown()
}
