mirror of
https://github.com/logos-messaging/logos-messaging-go-bindings.git
synced 2026-01-10 09:53:12 +00:00
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
package common
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import (
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"encoding/json"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/waku-org/go-waku/waku/v2/protocol/pb"
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)
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// Envelope contains information about the pubsub topic of a WakuMessage
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// and a hash used to identify a message based on the bytes of a WakuMessage
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// protobuffer
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type Envelope interface {
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Message() *pb.WakuMessage
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PubsubTopic() string
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Hash() pb.MessageHash
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}
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type envelopeImpl struct {
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msg *pb.WakuMessage
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topic string
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hash pb.MessageHash
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}
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type tmpWakuMessageJson struct {
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Payload []byte `json:"payload,omitempty"`
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ContentTopic string `json:"contentTopic,omitempty"`
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Version *uint32 `json:"version,omitempty"`
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Timestamp *int64 `json:"timestamp,omitempty"`
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Meta []byte `json:"meta,omitempty"`
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Ephemeral *bool `json:"ephemeral,omitempty"`
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RateLimitProof []byte `json:"proof,omitempty"`
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}
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type tmpEnvelopeStruct struct {
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WakuMessage tmpWakuMessageJson `json:"wakuMessage"`
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PubsubTopic string `json:"pubsubTopic"`
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MessageHash string `json:"messageHash"`
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}
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// NewEnvelope creates a new Envelope from a json string generated in nwaku
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func NewEnvelope(jsonEventStr string) (Envelope, error) {
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tmpEnvelopeStruct := tmpEnvelopeStruct{}
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err := json.Unmarshal([]byte(jsonEventStr), &tmpEnvelopeStruct)
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if err != nil {
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return nil, err
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}
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hash, err := hexutil.Decode(tmpEnvelopeStruct.MessageHash)
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if err != nil {
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return nil, err
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}
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return &envelopeImpl{
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msg: &pb.WakuMessage{
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Payload: tmpEnvelopeStruct.WakuMessage.Payload,
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ContentTopic: tmpEnvelopeStruct.WakuMessage.ContentTopic,
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Version: tmpEnvelopeStruct.WakuMessage.Version,
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Timestamp: tmpEnvelopeStruct.WakuMessage.Timestamp,
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Meta: tmpEnvelopeStruct.WakuMessage.Meta,
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Ephemeral: tmpEnvelopeStruct.WakuMessage.Ephemeral,
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RateLimitProof: tmpEnvelopeStruct.WakuMessage.RateLimitProof,
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},
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topic: tmpEnvelopeStruct.PubsubTopic,
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hash: pb.ToMessageHash(hash),
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}, nil
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}
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func (e *envelopeImpl) Message() *pb.WakuMessage {
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return e.msg
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}
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func (e *envelopeImpl) PubsubTopic() string {
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return e.topic
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}
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func (e *envelopeImpl) Hash() pb.MessageHash {
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return e.hash
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}
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