mirror of
https://github.com/openziti/ziti.git
synced 2026-09-10 08:45:41 +00:00
Paul Lorenz
76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
/*
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Copyright NetFoundry Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package command
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import (
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"encoding/binary"
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"github.com/openziti/foundation/v2/concurrenz"
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"github.com/pkg/errors"
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)
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var defaultDecoders = NewDecoders()
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func GetDefaultDecoders() Decoders {
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return defaultDecoders
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}
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type Decoders interface {
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Register(id int32, decoder Decoder)
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RegisterF(id int32, decoder DecoderF)
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Decode(data []byte) (Command, error)
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GetDecoder(id int32) Decoder
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Clear()
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}
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func NewDecoders() Decoders {
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result := &decodersImpl{}
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return result
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}
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type decodersImpl struct {
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concurrenz.CopyOnWriteMap[int32, Decoder]
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}
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func (self *decodersImpl) Decode(data []byte) (Command, error) {
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if len(data) < 4 {
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return nil, errors.New("invalid command, has length less than 4")
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}
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cmdType := int32(binary.BigEndian.Uint32(data[0:4]))
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m := self.Get(cmdType)
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if m == nil {
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return nil, errors.Errorf("invalid command type: %v", cmdType)
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}
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return m.Decode(cmdType, data[4:])
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}
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func (self *decodersImpl) Register(key int32, value Decoder) {
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if self.Get(key) != nil {
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panic(errors.Errorf("duplicate decoder registration for key [%v]", key))
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}
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self.Put(key, value)
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}
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func (self *decodersImpl) RegisterF(key int32, value DecoderF) {
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self.Register(key, value)
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}
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func (self *decodersImpl) GetDecoder(key int32) Decoder {
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return self.Get(key)
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}
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