feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/pkg/ctxcache/ctx_cache.go

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ctxcache
+
+import (
+	"context"
+	"sync"
+)
+
+type ctxCacheKey struct{}
+
+func Init(ctx context.Context) context.Context {
+	return context.WithValue(ctx, ctxCacheKey{}, new(sync.Map))
+}
+
+func Get[T any](ctx context.Context, key any) (value T, ok bool) {
+	var zero T
+
+	cacheMap, valid := ctx.Value(ctxCacheKey{}).(*sync.Map)
+	if !valid {
+		return zero, false
+	}
+
+	loadedValue, exists := cacheMap.Load(key)
+	if !exists {
+		return zero, false
+	}
+
+	if v, match := loadedValue.(T); match {
+		return v, true
+	}
+
+	return zero, false
+}
+
+func Store(ctx context.Context, key any, obj any) {
+	if cacheMap, ok := ctx.Value(ctxCacheKey{}).(*sync.Map); ok {
+		cacheMap.Store(key, obj)
+	}
+}
+
+func HasKey(ctx context.Context, key any) bool {
+	if cacheMap, ok := ctx.Value(ctxCacheKey{}).(*sync.Map); ok {
+		_, ok := cacheMap.Load(key)
+		return ok
+	}
+
+	return false
+}