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// Copyright 2017 PingCAP, 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.
package fn
// Group represents a handler group that contains same hooks
type Group struct {
plugins []PluginFunc
}
func NewGroup() *Group {
return &Group{}
}
func (g *Group) Plugin(plugins ...PluginFunc) *Group {
for _, b := range plugins {
if b != nil {
g.plugins = append(g.plugins, b)
}
}
return g
}
func (g *Group) Wrap(f interface{}) *fn {
n := Wrap(f)
if length := len(g.plugins); length > 0 {
n.plugins = make([]PluginFunc, length)
copy(n.plugins, g.plugins)
}
return n
}
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