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qing committed 2026-07-30 21:57:04 +08:00
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@@ -1,8 +1,7 @@
"""
统一日志客户端 — 通过 pymsg TCP 调用 dbv2 execute 路由,逐条 INSERT 到 Logs 表。
"""统一日志客户端 — 各服务共用(dnfs / smtp / static 三份副本内容一致,改动请同步)。
设计要点:
- 通过 pymsg TCP 调用 dbv2 execute 路由,逐条 INSERT 到 Logs 表
- 通过 pymsg RPC 调用 dbv2 execute 路由,逐条 INSERT 到 Logs 表
- 异步非阻塞:内存队列 + 后台线程批量推送,不拖慢业务
- fail-safe:db 服务不可用时静默丢弃,绝不影响业务
- 缓冲批量:队列满 50 条或超时 2 秒时自动 flush
@@ -10,9 +9,9 @@
用法:
from log_client import logs
logs.info("smtp", "验证码发送成功")
logs.error("smtp", "验证码发送失败", extra={"errno": 2002})
logs.push("smtp", "WARNING", "登录失败次数超限",
logs.info("dnfs", "节点新增成功 id=42")
logs.error("dnfs", "数据库连接失败", extra={"errno": 2002})
logs.push("gateway", "WARNING", "登录失败次数超限",
trace_id="req-abc", extra={"ip": "1.2.3.4"})
"""
@@ -26,12 +25,12 @@ import atexit
from datetime import datetime, timezone
_sys.path.insert(0, _os.path.join(_os.path.dirname(__file__), ".."))
from pymsg import MsgClient # noqa: E402
from pymsg import RpcClient, RpcError # noqa: E402
# ── 配置 ──────────────────────────────────────────────────────────────
_DBV2_ADDR = '127.0.0.1'
_DBV2_PORT = 8005
_DBV2_ADDR = _os.environ.get('DB_HOST', '127.0.0.1')
_DBV2_PORT = int(_os.environ.get('DB_PORT', '8005'))
_BATCH_SIZE = 50 # 队列满 50 条时 flush
_FLUSH_INTERVAL = 2.0 # 超时 2 秒强制 flush
@@ -39,12 +38,9 @@ _TIMEOUT = 5 # socket 超时(秒)
class LogClient:
"""异步批量日志推送客户端。
"""异步批量日志推送客户端。"""
通过 MsgClient(pymsg TCP 协议)逐条 INSERT 到 dbv2 的 Logs 表。
"""
def __init__(self, service_name="smtp",
def __init__(self, service_name="log",
batch_size=_BATCH_SIZE,
flush_interval=_FLUSH_INTERVAL):
self._service_name = service_name
@@ -88,9 +84,7 @@ class LogClient:
def flush(self):
"""手动 flush 队列中剩余的日志(含后台线程持有的局部 batch)。"""
self._flush_signal.set() # 通知后台线程立即 flush 其局部 batch
# 等待后台线程响应(queue.get 超时最长 0.5s)
time.sleep(0.6)
# 排空主队列中尚未被线程取走的条目
time.sleep(0.6) # 等待后台线程响应
batch = []
while True:
try:
@@ -113,7 +107,6 @@ class LogClient:
while not self._stop.is_set():
timeout = self._flush_interval - (time.monotonic() - last_flush)
# 限制最长阻塞时间,以便及时响应 flush() 信号
chk_timeout = max(0.1, min(timeout, 0.5))
try:
item = self._queue.get(timeout=chk_timeout)
@@ -141,35 +134,33 @@ class LogClient:
self._send(batch)
def _send(self, batch):
"""通过 pymsg 使用 execute 路由逐条 INSERT 到 dbv2 Logs 表。"""
"""通过 pymsg RPC(execute 路由)逐条 INSERT 到 dbv2 Logs 表。"""
now = datetime.now(timezone.utc).isoformat()
try:
client = MsgClient(_DBV2_ADDR, _DBV2_PORT, self._service_name + "-log")
for entry in batch:
extra_val = entry.get("extra")
payload = {
"_route": "execute",
"action": "insert",
"table": "Logs",
"values": {
"ts": now,
"service": entry.get("service"),
"level": entry.get("level"),
"message": entry.get("message"),
"trace_id": entry.get("trace_id"),
"extra": json.dumps(extra_val, ensure_ascii=False)
if extra_val is not None else None,
},
}
resp = client.call(json.dumps(payload), timeout=_TIMEOUT)
resp_obj = json.loads(resp)
if not resp_obj.get("success"):
import sys
print(f"[log_client] INSERT 失败: {resp_obj.get('error')}",
file=sys.stderr)
except Exception as e:
import sys
print(f"[log_client] 发送失败: {e}", file=sys.stderr)
client = RpcClient(_DBV2_ADDR, _DBV2_PORT, self._service_name + "-log")
for entry in batch:
extra_val = entry.get("extra")
payload = {
"action": "insert",
"table": "Logs",
"values": {
"ts": now,
"service": entry.get("service"),
"level": entry.get("level"),
"message": entry.get("message"),
"trace_id": entry.get("trace_id"),
"extra": json.dumps(extra_val, ensure_ascii=False)
if extra_val is not None else None,
},
}
try:
client.call("execute", payload, timeout=_TIMEOUT)
except RpcError as e:
# 业务错误(如表结构不符):打印后继续下一条
print(f"[log_client] INSERT 失败: {e}", file=_sys.stderr)
except Exception as e:
# 网络错误:db 不可用,放弃本批剩余(fail-safe)
print(f"[log_client] 发送失败: {e}", file=_sys.stderr)
break
def _shutdown(self):
"""进程退出时 flush 剩余日志。"""
@@ -179,4 +170,4 @@ class LogClient:
# ── 全局单例 ──────────────────────────────────────────────────────────
logs = LogClient(service_name="smtp")
logs = LogClient()