From ffe4bda23803977219e2e0ada5e120cd6fd589eb Mon Sep 17 00:00:00 2001
From: cfdaily <cfdaily@gitee.com>
Date: Sun, 7 Jun 2026 11:56:05 +0800
Subject: [PATCH] auto-sync: 2026-06-07 11:56:05

---
 src/daemon/toolchain_templates.py | 78 +++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 src/daemon/toolchain_templates.py

diff --git a/src/daemon/toolchain_templates.py b/src/daemon/toolchain_templates.py
new file mode 100644
index 0000000..ce6a1e2
--- /dev/null
+++ b/src/daemon/toolchain_templates.py
@@ -0,0 +1,78 @@
+"""工具链事件模板引擎（Toolchain Event Hub）
+
+加载 templates/toolchain/ 下的 Markdown 模板，提供 {variable} 占位符渲染。
+"""
+
+from __future__ import annotations
+
+import logging
+from collections import defaultdict
+from pathlib import Path
+from typing import Dict
+
+logger = logging.getLogger(__name__)
+
+TEMPLATES_DIR = Path(__file__).parent.parent / "templates" / "toolchain"
+
+# 模板文件名映射
+_TEMPLATE_MAP: Dict[str, str] = {
+    "review_request": "review_request.md",
+    "review_result": "review_result.md",
+    "issue_assigned": "issue_assigned.md",
+    "ci_failure": "ci_failure.md",
+    "deploy_failure": "deploy_failure.md",
+}
+
+# 模板缓存
+_template_cache: Dict[str, str] = {}
+
+
+def _load_template(name: str) -> str:
+    """加载并缓存模板文件内容。
+
+    Args:
+        name: 模板名称（不含 .md 后缀）
+
+    Returns:
+        模板文本内容
+
+    Raises:
+        FileNotFoundError: 模板文件不存在
+    """
+    if name in _template_cache:
+        return _template_cache[name]
+
+    filename = _TEMPLATE_MAP.get(name)
+    if not filename:
+        raise ValueError(f"Unknown template: {name}")
+
+    path = TEMPLATES_DIR / filename
+    if not path.exists():
+        raise FileNotFoundError(f"Template not found: {path}")
+
+    content = path.read_text(encoding="utf-8")
+    _template_cache[name] = content
+    logger.debug("Loaded template: %s (%d bytes)", name, len(content))
+    return content
+
+
+def render_template(name: str, variables: Dict[str, str]) -> str:
+    """渲染模板，将 {variable} 占位符替换为实际值。
+
+    使用 defaultdict(str) 确保未提供的变量替换为空字符串而非报错。
+
+    Args:
+        name: 模板名称
+        variables: 变量字典
+
+    Returns:
+        渲染后的文本
+    """
+    template_text = _load_template(name)
+    safe_vars: Dict[str, str] = defaultdict(str, variables)
+    return template_text.format_map(safe_vars)
+
+
+def clear_cache() -> None:
+    """清空模板缓存（用于测试或热更新）"""
+    _template_cache.clear()