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protocp.go
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90 lines (75 loc) · 1.85 KB
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package reflex
import (
"google.golang.org/protobuf/types/known/durationpb"
"google.golang.org/protobuf/types/known/timestamppb"
"github.com/luno/reflex/reflexpb"
)
func eventToProto(e *Event) (*reflexpb.Event, error) {
return &reflexpb.Event{
Id: e.ID,
ForeignId: e.ForeignID,
Type: int32(e.Type.ReflexType()),
Timestamp: timestamppb.New(e.Timestamp),
Metadata: e.MetaData,
Trace: e.Trace,
}, nil
}
func eventFromProto(e *reflexpb.Event) (*Event, error) {
return &Event{
ID: e.Id,
ForeignID: e.ForeignId,
Type: eventType(e.Type),
Timestamp: e.Timestamp.AsTime(),
MetaData: e.Metadata,
Trace: e.Trace,
}, nil
}
type streamclientpb struct {
StreamClientPB
}
func (c streamclientpb) Recv() (*Event, error) {
e, err := c.StreamClientPB.Recv()
if err != nil {
return nil, err
}
return eventFromProto(e)
}
func streamClientFromProto(sc StreamClientPB) StreamClient {
return &streamclientpb{sc}
}
// optsFromProto returns a slice of StreamOptions converted from the proto
// message options. Conversion errors are unexpected, so only logged.
func optsFromProto(options *reflexpb.StreamOptions) []StreamOption {
var opts []StreamOption
if options == nil {
return opts
}
if options.Lag != nil {
d := options.Lag.AsDuration()
if d > 0 {
opts = append(opts, WithStreamLag(d))
}
}
if options.FromHead {
opts = append(opts, WithStreamFromHead())
}
if options.ToHead {
opts = append(opts, WithStreamToHead())
}
return opts
}
func optsToProto(opts []StreamOption) (*reflexpb.StreamOptions, error) {
options := new(StreamOptions)
for _, o := range opts {
o(options)
}
var lag *durationpb.Duration
if options.Lag > 0 {
lag = durationpb.New(options.Lag)
}
return &reflexpb.StreamOptions{
Lag: lag,
FromHead: options.StreamFromHead,
ToHead: options.StreamToHead,
}, nil
}