426 lines
13 KiB
Python
426 lines
13 KiB
Python
"""HTTP/WebSocket access logging ASGI middleware."""
|
|
|
|
from __future__ import annotations
|
|
|
|
import http
|
|
import itertools
|
|
import logging
|
|
import time
|
|
import unicodedata
|
|
from ipaddress import IPv6Address
|
|
from typing import TYPE_CHECKING, cast
|
|
|
|
if TYPE_CHECKING:
|
|
from uvicorn._types import (
|
|
ASGI3Application,
|
|
ASGIReceiveCallable,
|
|
ASGIReceiveEvent,
|
|
ASGISendCallable,
|
|
ASGISendEvent,
|
|
Scope,
|
|
WWWScope,
|
|
)
|
|
|
|
logger = logging.getLogger("fastapi_vue.access")
|
|
|
|
# Terminal color codes
|
|
_RESET = "\033[0m"
|
|
_STATUS_INFO = "\033[32m" # 1xx (green)
|
|
_STATUS_OK = "\033[1;92m" # 2xx (bright green)
|
|
_STATUS_REDIRECT = "\033[32m" # 3xx (green)
|
|
_STATUS_CLIENT_ERR = "\033[0;31m" # 4xx (red)
|
|
_STATUS_SERVER_ERR = "\033[1;91m" # 5xx (bold bright red)
|
|
_METHOD_READ = "\033[0;34m" # GET, HEAD, OPTIONS (blue)
|
|
_METHOD_WRITE = "\033[1;94m" # POST, PUT, DELETE, PATCH (bold bright blue)
|
|
_HOST = "\033[38;5;242m" # hostname (dark grey)
|
|
_PATH = "\033[38;5;250m" # path (white)
|
|
_TIMING = "\033[38;5;242m" # timing/devmode (dark grey)
|
|
_WS_OPEN = "\033[38;5;226m" # WebSocket connect (brightest yellow)
|
|
_WS_CLOSE = "\033[38;5;142m" # WebSocket disconnect (dimmer yellow)
|
|
|
|
|
|
def _display_width(text: str) -> int:
|
|
return sum(2 if unicodedata.east_asian_width(char) in ("F", "W") else 1 for char in text)
|
|
|
|
|
|
def _pad_display(text: str, width: int) -> str:
|
|
return text + " " * max(width - _display_width(text), 0)
|
|
|
|
|
|
def _format_duration(duration: float) -> str:
|
|
ms = int(duration * 1000)
|
|
if ms < 2000:
|
|
return f"{ms}ms"
|
|
|
|
total_seconds = ms // 1000
|
|
if total_seconds < 60:
|
|
return f"{total_seconds}s"
|
|
|
|
if total_seconds < 3600:
|
|
minutes, seconds = divmod(total_seconds, 60)
|
|
return f"{minutes}m{seconds}s"
|
|
|
|
hours, remainder = divmod(total_seconds, 3600)
|
|
minutes = remainder // 60
|
|
return f"{hours}h{minutes}m"
|
|
|
|
|
|
def _status_color(status: int) -> str:
|
|
if status < 200:
|
|
return _STATUS_INFO
|
|
if status < 300:
|
|
return _STATUS_OK
|
|
if status < 400:
|
|
return _STATUS_REDIRECT
|
|
if status < 500:
|
|
return _STATUS_CLIENT_ERR
|
|
return _STATUS_SERVER_ERR
|
|
|
|
|
|
def _method_color(method: str) -> str:
|
|
return _METHOD_READ if method in ("GET", "HEAD", "OPTIONS") else _METHOD_WRITE
|
|
|
|
|
|
def _format_extra_timing(extra: str = "", duration: float | None = None) -> tuple[str, str]:
|
|
timing = _format_duration(duration) if duration is not None else ""
|
|
return (f"{extra} " if extra else "", f"{_TIMING}{timing}{_RESET}" if timing else "")
|
|
|
|
|
|
def _format_ipv6_network(ip: str) -> str:
|
|
try:
|
|
ip = ip.strip("[]")
|
|
if "%" in ip:
|
|
ip = ip.split("%")[0]
|
|
addr = IPv6Address(ip)
|
|
|
|
if addr.is_loopback:
|
|
return "::1"
|
|
if addr.is_unspecified:
|
|
return "::"
|
|
if addr.ipv4_mapped:
|
|
return str(addr.ipv4_mapped)
|
|
if addr.is_link_local:
|
|
return str(addr)
|
|
|
|
network_int = int(addr) >> 64
|
|
groups: list[str] = []
|
|
for _ in range(4):
|
|
groups.insert(0, format(network_int & 0xFFFF, "x"))
|
|
network_int >>= 16
|
|
result = ":".join(groups) + "::"
|
|
return str(IPv6Address(result + "0")).removesuffix("::")
|
|
except ValueError:
|
|
return ip
|
|
|
|
|
|
def _format_client_ip(ip: str) -> str:
|
|
if not ip or ip == "-":
|
|
return "-"
|
|
stripped = ip.strip("[]")
|
|
if ":" in stripped:
|
|
return _format_ipv6_network(ip)
|
|
return ip
|
|
|
|
|
|
def _header(scope: WWWScope, name: str) -> str | None:
|
|
name_bytes = name.lower().encode("latin-1")
|
|
for key, value in scope["headers"]:
|
|
if key.lower() == name_bytes:
|
|
return value.decode("latin-1")
|
|
return None
|
|
|
|
|
|
def _client_host(scope: WWWScope) -> str:
|
|
client = scope["client"]
|
|
return client[0] if client else "-"
|
|
|
|
|
|
def _path(scope: WWWScope) -> str:
|
|
path = scope["path"]
|
|
query = scope["query_string"]
|
|
if query:
|
|
return f"{path}?{query.decode('latin-1')}"
|
|
return path
|
|
|
|
|
|
# WebSocket connection counter (mod 100)
|
|
_ws_counter = itertools.count()
|
|
|
|
|
|
def _next_ws_id() -> str:
|
|
return f"{next(_ws_counter) % 100:02d}"
|
|
|
|
|
|
WS_CLOSE_CODES = {
|
|
1000: "ok",
|
|
1001: "going away",
|
|
1002: "protocol error",
|
|
1003: "unsupported",
|
|
1005: "no status",
|
|
1006: "abnormal",
|
|
1007: "invalid data",
|
|
1008: "policy violation",
|
|
1009: "too large",
|
|
1010: "extension required",
|
|
1011: "server error",
|
|
1012: "restarting",
|
|
1013: "try again",
|
|
1014: "bad gateway",
|
|
1015: "tls error",
|
|
}
|
|
|
|
|
|
def _http_access_log_extra(
|
|
scope: WWWScope,
|
|
status: int,
|
|
duration: float,
|
|
extra: str = "",
|
|
method: str | None = None,
|
|
) -> dict[str, object]:
|
|
client_addr = _client_host(scope)
|
|
full_path = _path(scope)
|
|
method = method if method is not None else cast("str", scope.get("method", "-"))
|
|
method = cast("str", scope.get("state", {}).get("access_log_method") or method)
|
|
|
|
try:
|
|
status_phrase = http.HTTPStatus(status).phrase
|
|
except ValueError:
|
|
status_phrase = ""
|
|
|
|
extra, timing = _format_extra_timing(extra, duration)
|
|
|
|
return {
|
|
"client": _format_client_ip(client_addr).ljust(19),
|
|
"status": f"{_status_color(status)}{str(status).rjust(3)}{_RESET}",
|
|
"method": (
|
|
f"{_METHOD_READ}{_pad_display('🔌', 7)}{_RESET}"
|
|
if method == "🔌"
|
|
else f"{_method_color(method)}{_pad_display(method, 7)}{_RESET}"
|
|
),
|
|
"host": f"{_HOST}{_header(scope, 'host') or '-'}{_RESET}",
|
|
"path": f"{_PATH}{full_path}{_RESET}",
|
|
"extra": extra,
|
|
"timing": timing,
|
|
"client_addr": client_addr,
|
|
"status_code": f"{status} {status_phrase}",
|
|
"request_line": f"{method} {full_path} HTTP/{scope.get('http_version', '-')}",
|
|
"http_version": scope.get("http_version", "-"),
|
|
"full_path": full_path,
|
|
}
|
|
|
|
|
|
def _ws_open_extra(
|
|
scope: WWWScope,
|
|
ws_id: str,
|
|
origin: str | None,
|
|
extra: str = "",
|
|
) -> dict[str, object]:
|
|
client_addr = _client_host(scope)
|
|
path = scope.get("path", "")
|
|
full_path = _path(scope)
|
|
|
|
origin_host = origin.split("://", 1)[-1] if origin else None
|
|
extra, timing = _format_extra_timing(extra)
|
|
|
|
host = _header(scope, "host")
|
|
path = f"{_PATH}{path}{_RESET}"
|
|
if origin_host and origin_host != host:
|
|
path += f" {_RESET}from {_HOST}{origin_host}{_RESET}"
|
|
return {
|
|
"client": _format_client_ip(client_addr).ljust(19),
|
|
"status": f"{_WS_OPEN} {ws_id}{_RESET}",
|
|
"method": f"{_METHOD_READ}{_pad_display('🔌', 7)}{_RESET}",
|
|
"host": f"{_HOST}{host}{_RESET}" if host else "",
|
|
"path": path,
|
|
"extra": extra,
|
|
"timing": timing,
|
|
"client_addr": client_addr,
|
|
"status_code": "",
|
|
"request_line": f"WebSocket {path}",
|
|
"http_version": scope.get("http_version", "-"),
|
|
"full_path": full_path,
|
|
}
|
|
|
|
|
|
def _ws_close_extra(
|
|
scope: WWWScope,
|
|
ws_id: str,
|
|
close_code: int | None,
|
|
duration: float,
|
|
extra: str = "",
|
|
) -> dict[str, object]:
|
|
client_addr = _client_host(scope)
|
|
path = scope.get("path", "-")
|
|
full_path = _path(scope)
|
|
|
|
if close_code is None:
|
|
code, status_text = "----", "unknown"
|
|
else:
|
|
code = str(close_code)
|
|
status_text = WS_CLOSE_CODES.get(close_code, f"code {close_code}")
|
|
|
|
extra, timing = _format_extra_timing(extra, duration)
|
|
|
|
return {
|
|
"client": " " * 19,
|
|
"status": f"{_WS_CLOSE} {ws_id}{_RESET}",
|
|
"method": f"{_TIMING}{_pad_display('closed', 7)}{_RESET}",
|
|
"host": "",
|
|
"path": f"{code} {status_text}",
|
|
"extra": extra,
|
|
"timing": timing,
|
|
"client_addr": client_addr,
|
|
"status_code": f"{code} {status_text}",
|
|
"request_line": f"WebSocket {path}",
|
|
"http_version": scope.get("http_version", "-"),
|
|
"full_path": full_path,
|
|
}
|
|
|
|
|
|
def _ws_reject_extra(
|
|
scope: WWWScope,
|
|
close_code: int | None,
|
|
duration: float,
|
|
extra: str = "",
|
|
) -> dict[str, object]:
|
|
"""Open-format line for a connection closed before accept.
|
|
|
|
Replaces the open line (which never happened), so the client IP, host and
|
|
path stay visible. No connection id is printed (ids are only assigned on
|
|
accept); the status column shows a dim ``--`` and the close reason rides
|
|
in the extra column.
|
|
"""
|
|
if close_code is None:
|
|
code, status_text = "----", "unknown"
|
|
else:
|
|
code = str(close_code)
|
|
status_text = WS_CLOSE_CODES.get(close_code, f"code {close_code}")
|
|
|
|
fields = _ws_open_extra(scope, "--", _header(scope, "origin"))
|
|
reason = f"closed {code} {status_text}"
|
|
extra, timing = _format_extra_timing(f"{reason} {extra}" if extra else reason, duration)
|
|
fields.update(
|
|
{
|
|
"status": f"{_WS_CLOSE} --{_RESET}",
|
|
"extra": extra,
|
|
"timing": timing,
|
|
"status_code": f"{code} {status_text}",
|
|
}
|
|
)
|
|
return fields
|
|
|
|
|
|
def _assemble_access_log(fields: dict[str, object]) -> str:
|
|
return (
|
|
f"{fields['client']} {fields['status']} {fields['method']}"
|
|
f"{fields['host']}{fields['path']}{fields['extra']}{fields['timing']}"
|
|
)
|
|
|
|
|
|
class AccessLogMiddleware:
|
|
"""ASGI middleware logging HTTP and WebSocket access with colored fields."""
|
|
|
|
def __init__(self, app: ASGI3Application) -> None:
|
|
"""Store the wrapped app."""
|
|
self.app = app
|
|
|
|
async def __call__(
|
|
self, scope: Scope, receive: ASGIReceiveCallable, send: ASGISendCallable
|
|
) -> None:
|
|
"""Dispatch by scope type to HTTP/WebSocket access logging."""
|
|
if scope["type"] == "http":
|
|
return await self._handle_http(scope, receive, send)
|
|
if scope["type"] == "websocket":
|
|
return await self._handle_websocket(scope, receive, send)
|
|
return await self.app(scope, receive, send)
|
|
|
|
async def _handle_http(
|
|
self, scope: Scope, receive: ASGIReceiveCallable, send: ASGISendCallable
|
|
) -> None:
|
|
start = time.perf_counter()
|
|
www_scope = cast("WWWScope", scope)
|
|
|
|
async def wrapped_send(message: ASGISendEvent) -> None:
|
|
if message["type"] == "http.response.start":
|
|
fields = _http_access_log_extra(
|
|
www_scope,
|
|
status=message["status"],
|
|
duration=time.perf_counter() - start,
|
|
extra=www_scope.get("state", {}).get("log_extra", ""),
|
|
)
|
|
logger.info(
|
|
'%s - "%s" %s',
|
|
fields["client_addr"],
|
|
fields["request_line"],
|
|
fields["status_code"],
|
|
extra=fields,
|
|
)
|
|
await send(message)
|
|
|
|
return await self.app(scope, receive, wrapped_send)
|
|
|
|
async def _handle_websocket(
|
|
self, scope: Scope, receive: ASGIReceiveCallable, send: ASGISendCallable
|
|
) -> None:
|
|
start = time.perf_counter()
|
|
ws_id: str | None = None # assigned on accept; rejects print "--"
|
|
accepted = False
|
|
closed = False
|
|
|
|
www_scope = cast("WWWScope", scope)
|
|
origin = _header(www_scope, "origin")
|
|
|
|
def _extra() -> str:
|
|
return www_scope.get("state", {}).get("log_extra", "")
|
|
|
|
def _close_fields(message: ASGIReceiveEvent | ASGISendEvent) -> dict[str, object]:
|
|
if accepted:
|
|
assert ws_id is not None # noqa: S101 # guaranteed once accepted
|
|
return _ws_close_extra(
|
|
www_scope,
|
|
ws_id,
|
|
message.get("code"),
|
|
time.perf_counter() - start,
|
|
_extra(),
|
|
)
|
|
return _ws_reject_extra(
|
|
www_scope,
|
|
message.get("code"),
|
|
time.perf_counter() - start,
|
|
_extra(),
|
|
)
|
|
|
|
async def wrapped_send(message: ASGISendEvent) -> None:
|
|
nonlocal accepted, closed, ws_id
|
|
if message["type"] == "websocket.accept" and not accepted:
|
|
accepted = True
|
|
ws_id = _next_ws_id()
|
|
fields = _ws_open_extra(www_scope, ws_id, origin, _extra())
|
|
logger.info(_assemble_access_log(fields), extra=fields)
|
|
elif message["type"] == "websocket.http.response.start" and not closed:
|
|
closed = True
|
|
fields = _http_access_log_extra(
|
|
www_scope,
|
|
status=message["status"],
|
|
duration=time.perf_counter() - start,
|
|
extra=_extra(),
|
|
method="🔌",
|
|
)
|
|
logger.info(_assemble_access_log(fields), extra=fields)
|
|
elif message["type"] == "websocket.close" and not closed:
|
|
closed = True
|
|
fields = _close_fields(message)
|
|
logger.info(_assemble_access_log(fields), extra=fields)
|
|
await send(message)
|
|
|
|
async def wrapped_receive() -> ASGIReceiveEvent:
|
|
nonlocal closed
|
|
message = await receive()
|
|
if message["type"] == "websocket.disconnect" and not closed:
|
|
closed = True
|
|
fields = _close_fields(message)
|
|
logger.info(_assemble_access_log(fields), extra=fields)
|
|
return message
|
|
|
|
return await self.app(scope, wrapped_receive, wrapped_send)
|