From 7f672b37e166a97fc652a40c7fc41d03f1d6e690 Mon Sep 17 00:00:00 2001
From: chrislu <chris.lu@gmail.com>
Date: Mon, 18 Jul 2022 00:25:14 -0700
Subject: add flatbuffer serde for message

---
 weed/mq/segment/message_serde.go | 48 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 weed/mq/segment/message_serde.go

(limited to 'weed/mq/segment/message_serde.go')

diff --git a/weed/mq/segment/message_serde.go b/weed/mq/segment/message_serde.go
new file mode 100644
index 000000000..b69d78cab
--- /dev/null
+++ b/weed/mq/segment/message_serde.go
@@ -0,0 +1,48 @@
+package segment
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/pb/message_fbs"
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+func CreateMessage(b *flatbuffers.Builder, producerId int32, producerSeq int64, segmentId int32, segmentSeq int64,
+	eventTsNs int64, recvTsNs int64, properties map[string]string, key []byte, value []byte) {
+	b.Reset()
+
+	var names, values, pairs []flatbuffers.UOffsetT
+	for k, v := range properties {
+		names = append(names, b.CreateString(k))
+		values = append(values, b.CreateString(v))
+	}
+
+	for i, _ := range names {
+		message_fbs.NameValueStart(b)
+		message_fbs.NameValueAddName(b, names[i])
+		message_fbs.NameValueAddValue(b, values[i])
+		pair := message_fbs.NameValueEnd(b)
+		pairs = append(pairs, pair)
+	}
+	message_fbs.MessageStartPropertiesVector(b, len(properties))
+	for i := len(pairs) - 1; i >= 0; i-- {
+		b.PrependUOffsetT(pairs[i])
+	}
+	prop := b.EndVector(len(properties))
+
+	k := b.CreateByteVector(key)
+	v := b.CreateByteVector(value)
+
+	message_fbs.MessageStart(b)
+	message_fbs.MessageAddProducerId(b, producerId)
+	message_fbs.MessageAddProducerSeq(b, producerSeq)
+	message_fbs.MessageAddSegmentId(b, segmentId)
+	message_fbs.MessageAddSegmentSeq(b, segmentSeq)
+	message_fbs.MessageAddEventTsNs(b, eventTsNs)
+	message_fbs.MessageAddRecvTsNs(b, recvTsNs)
+
+	message_fbs.MessageAddProperties(b, prop)
+	message_fbs.MessageAddKey(b, k)
+	message_fbs.MessageAddData(b, v)
+	message := message_fbs.MessageEnd(b)
+
+	b.Finish(message)
+}
-- 
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