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fallback.go
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fallback.go
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// Copyright (C) 2020-2021, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package fallback
import (
"context"
"github.com/IrineSistiana/mosdns/dispatcher/handler"
"github.com/IrineSistiana/mosdns/dispatcher/pkg/executable_seq"
)
const PluginType = "fallback"
func init() {
handler.RegInitFunc(PluginType, Init, func() interface{} { return new(Args) })
}
var _ handler.ExecutablePlugin = (*fallback)(nil)
type fallback struct {
*handler.BP
fallbackECS *executable_seq.FallbackECS
}
type Args = executable_seq.FallbackConfig
func Init(bp *handler.BP, args interface{}) (p handler.Plugin, err error) {
return newFallback(bp, args.(*Args))
}
func newFallback(bp *handler.BP, args *Args) (*fallback, error) {
fallbackECS, err := executable_seq.ParseFallbackECS(args)
if err != nil {
return nil, err
}
return &fallback{
BP: bp,
fallbackECS: fallbackECS,
}, nil
}
func (f *fallback) Exec(ctx context.Context, qCtx *handler.Context) (err error) {
_, err = f.fallbackECS.ExecCmd(ctx, qCtx, f.L())
return err
}