openreplay/backend/internal/builder/builder.go
2022-05-11 18:51:55 +02:00

53 lines
1.1 KiB
Go

package builder
import (
"openreplay/backend/internal/handlers"
. "openreplay/backend/pkg/messages"
)
type builder struct {
readyMsgs []Message
timestamp uint64
processors []handlers.MessageProcessor
ended bool
}
func NewBuilder(handlers ...handlers.MessageProcessor) *builder {
return &builder{
processors: handlers,
}
}
func (b *builder) iterateReadyMessages(iter func(msg Message)) {
for _, readyMsg := range b.readyMsgs {
iter(readyMsg)
}
b.readyMsgs = nil
}
func (b *builder) checkSessionEnd(message Message) {
if _, isEnd := message.(*IOSSessionEnd); isEnd {
b.ended = true
}
if _, isEnd := message.(*SessionEnd); isEnd {
b.ended = true
}
}
func (b *builder) handleMessage(message Message, messageID uint64) {
timestamp := GetTimestamp(message)
if b.timestamp < timestamp {
b.timestamp = timestamp
}
if b.timestamp == 0 {
// in case of SessionStart. TODO: make timestamp system transparent
return
}
for _, p := range b.processors {
if rm := p.Handle(message, messageID, b.timestamp); rm != nil {
b.readyMsgs = append(b.readyMsgs, rm)
}
}
b.checkSessionEnd(message)
}