Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

envd/internal/logs/bufferedEvents.go

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package logs
+
+import (
+	"time"
+
+	"github.com/rs/zerolog"
+)
+
+const (
+	defaultMaxBufferSize = 2 << 15
+	defaultTimeout       = 2 * time.Second
+)
+
+func LogBufferedDataEvents(dataCh <-chan []byte, logger *zerolog.Logger, eventType string) {
+	timer := time.NewTicker(defaultTimeout)
+	defer timer.Stop()
+
+	var buffer []byte
+	defer func() {
+		if len(buffer) > 0 {
+			logger.Info().Str(eventType, string(buffer)).Msg("Streaming process event (flush)")
+		}
+	}()
+
+	for {
+		select {
+		case <-timer.C:
+			if len(buffer) > 0 {
+				logger.Info().Str(eventType, string(buffer)).Msg("Streaming process event")
+				buffer = nil
+			}
+		case data, ok := <-dataCh:
+			if !ok {
+				return
+			}
+
+			buffer = append(buffer, data...)
+
+			if len(buffer) >= defaultMaxBufferSize {
+				logger.Info().Str(eventType, string(buffer)).Msg("Streaming process event")
+				buffer = nil
+
+				continue
+			}
+		}
+	}
+}