From 96c07bab1086510a55a004e9a1b90c30bc723a5c Mon Sep 17 00:00:00 2001
From: sangtran <tranquangsang12.7@gmail.com>
Date: Sat, 29 Aug 2026 01:08:28 +0700
Subject: feat: init base draft support window

---
 state/memory_backend.go | 57 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 state/memory_backend.go

(limited to 'state/memory_backend.go')

diff --git a/state/memory_backend.go b/state/memory_backend.go
new file mode 100644
index 0000000..6594657
--- /dev/null
+++ b/state/memory_backend.go
@@ -0,0 +1,57 @@
+package state
+
+import (
+	"context"
+	"flux/core"
+)
+
+// TODO: currently using Golang Map for go through the DAG pipline
+// This should be use index map index map[uint64]uint32  Hash(KeyGroup + StateName + Key) -> Offset
+// with 1GB of []byte allocation
+// This should be optimize with ZERO GC Scanning, Memory Alignment
+
+type MemoryStateBackend struct {
+	maxParallelism  int
+	currentKey      string
+	currentGroupKey int
+	currentNamespace any
+	// 4D structure StateName -> KeyGroup -> Key -> Namespace -> Value
+	states map[string]map[int]map[string]map[any]any
+}
+
+func NewMemoryStateBackend(maxParallelism int) *MemoryStateBackend {
+	return &MemoryStateBackend{
+		maxParallelism: maxParallelism,
+		states:         make(map[string]map[int]map[string]map[any]any),
+	}
+}
+
+func (ms *MemoryStateBackend) GetCurrentKey() string {
+	return ms.currentKey
+}
+
+func (ms *MemoryStateBackend) SetCurrentKey(key string) error {
+	ms.currentKey = key
+	ms.currentGroupKey = core.AssignToKeyGroup(key, ms.maxParallelism)
+	return nil
+}
+
+func (ms *MemoryStateBackend) GetValueState(ctx context.Context, key string) (core.ValueState[any], error) {
+	// Assign if state not existed
+
+	if _, ok := ms.states[key]; !ok {
+		ms.states[key] = make(map[int]map[string]map[any]any)
+	}
+
+	return &memoryStateValue{backend: ms, stateName: key}, nil
+}
+
+func (ms *MemoryStateBackend) GetCurrentNamespace() any{
+
+	return ms.currentNamespace
+}
+
+func (ms *MemoryStateBackend) SetCurrentNamespace(namespace any) error {
+	ms.currentNamespace = namespace
+	return nil
+}
-- 
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