mirror of
https://github.com/openziti/ziti.git
synced 2026-10-09 06:11:34 +00:00
Paul Lorenz
122 lines
3.3 KiB
Go
122 lines
3.3 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 xgress
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import (
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"fmt"
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"github.com/michaelquigley/pfxlog"
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"github.com/openziti/channel/v2"
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)
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type Decoder struct{}
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const DECODER = "data"
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func (d Decoder) Decode(msg *channel.Message) ([]byte, bool) {
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switch msg.ContentType {
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case int32(ContentTypePayloadType):
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if payload, err := UnmarshallPayload(msg); err == nil {
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return DecodePayload(payload)
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} else {
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pfxlog.Logger().WithError(err).Error("unexpected error unmarshalling payload msg")
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}
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case int32(ContentTypeAcknowledgementType):
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if ack, err := UnmarshallAcknowledgement(msg); err == nil {
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meta := channel.NewTraceMessageDecode(DECODER, "Acknowledgement")
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meta["circuitId"] = ack.CircuitId
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meta["sequence"] = fmt.Sprintf("len(%d)", len(ack.Sequence))
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switch ack.GetOriginator() {
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case Initiator:
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meta["originator"] = "i"
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case Terminator:
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meta["originator"] = "e"
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}
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data, err := meta.MarshalTraceMessageDecode()
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if err != nil {
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return nil, true
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}
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return data, true
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} else {
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pfxlog.Logger().WithError(err).Error("unexpected error unmarshalling ack msg")
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}
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case int32(ContentTypeControlType):
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if control, err := UnmarshallControl(msg); err == nil {
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meta := channel.NewTraceMessageDecode(DECODER, "Control")
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meta["circuitId"] = control.CircuitId
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meta["type"] = control.Type.String()
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if control.Type == ControlTypeTraceRoute || control.Type == ControlTypeTraceRouteResponse {
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if ts, found := msg.GetUint64Header(ControlTimestamp); found {
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meta["ts"] = ts
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}
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if hop, found := msg.GetUint32Header(ControlHopCount); found {
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meta["hopCount"] = hop
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}
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if hopType, found := msg.GetStringHeader(ControlHopType); found {
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meta["hopType"] = hopType
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}
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if hopId, found := msg.GetStringHeader(ControlHopId); found {
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meta["hopId"] = hopId
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}
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if userVal, found := msg.GetUint32Header(ControlUserVal); found {
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meta["uv"] = userVal
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}
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if hopErr, found := msg.GetUint32Header(ControlError); found {
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meta["err"] = hopErr
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}
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}
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data, err := meta.MarshalTraceMessageDecode()
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if err != nil {
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return nil, true
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}
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return data, true
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} else {
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pfxlog.Logger().WithError(err).Error("unexpected error unmarshalling control msg")
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}
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}
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return nil, false
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}
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func DecodePayload(payload *Payload) ([]byte, bool) {
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meta := channel.NewTraceMessageDecode(DECODER, "Payload")
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meta["circuitId"] = payload.CircuitId
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meta["sequence"] = payload.Sequence
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switch payload.GetOriginator() {
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case Initiator:
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meta["originator"] = "i"
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case Terminator:
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meta["originator"] = "e"
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}
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if payload.Flags != 0 {
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meta["flags"] = payload.Flags
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}
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meta["length"] = len(payload.Data)
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data, err := meta.MarshalTraceMessageDecode()
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if err != nil {
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return nil, true
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}
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return data, true
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}
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