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cista-storage/cista/sanic_logging.py
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LeoVasanko f8b2c9494a WebDAV sync support, access tokens, REST control endpoints (#10)
Implement complete WebDAV file serving compatible with various clients from Windows File Explorer to more specialized sync tools. The old control WebSocket has been updated to part-DAV, part REST API instead. Implemented user:pass BASIC auth. Added UI and backend for creating tokens that avoid the need to use actual username and password for requests from CLI or DAV.
2026-04-26 04:22:52 +00:00

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"""Custom access logging middleware for Sanic."""
import logging
import sys
import unicodedata
from ipaddress import IPv6Address
logger = logging.getLogger("cista.access")
_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 (light grey)
_TIMING = "\033[38;5;242m" # timing (dark grey)
_WS_OPEN = "\033[1;93m" # WebSocket connect (bold bright yellow)
_WS_CLOSE = "\033[33m" # WebSocket disconnect (yellow)
_WS_STATUS = "\033[38;5;250m" # WebSocket close status (normal white)
def format_ipv6_network(ip: str) -> str:
"""Format IPv6 address to show only network part (first 64 bits)."""
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 = []
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 Exception:
return ip
def format_client_ip(ip: str) -> str:
"""Format client IP, compressing IPv6 to network part only."""
if not ip or ip == "-":
return "-"
stripped = ip.strip("[]")
if ":" in stripped:
return format_ipv6_network(stripped)
return stripped
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:
if method in ("GET", "HEAD", "OPTIONS"):
return _METHOD_READ
return _METHOD_WRITE
def format_duration_ms(duration_ms: float) -> str:
rounded_ms = round(duration_ms)
if rounded_ms < 2000:
return f"{rounded_ms}ms"
total_s = round(duration_ms / 1000)
if total_s < 60:
return f"{total_s}s"
if total_s <= 3600:
minutes, seconds = divmod(total_s, 60)
return f"{minutes}m{seconds}s"
hours, remainder = divmod(total_s, 3600)
minutes = round(remainder / 60)
if minutes == 60:
hours += 1
minutes = 0
return f"{hours}h{minutes}m"
def _display_width(text: str) -> int:
width = 0
for char in text:
width += 2 if unicodedata.east_asian_width(char) in {"F", "W"} else 1
return width
def _format_left(label: str) -> str:
return label[:19].ljust(19)
def _format_method_label(label: str, *, color: str | None = None) -> str:
color_value = _METHOD_WRITE if color is None else color
padding = max(0, 7 - _display_width(label))
return f"{color_value}{label}{' ' * padding}{_RESET}"
def format_access_log(
client: str,
status: int,
method: str,
host: str,
path: str,
duration_ms: float,
extra: str | None = None,
) -> str:
ip = _format_left(format_client_ip(client))
status_str = f"{status_color(status)}{str(status).rjust(3)}{_RESET}"
method_str = _format_method_label(method, color=method_color(method))
host_str = f"{_HOST}{host}{_RESET}"
path_str = f"{_PATH}{path}{_RESET}"
timing_str = f"{_TIMING}{format_duration_ms(duration_ms)}{_RESET}"
extra_str = f" {_TIMING}{extra}{_RESET}" if extra else ""
return (
f"{ip} {status_str} {method_str} {host_str}{path_str}{extra_str} {timing_str}"
)
_ws_counter = 1
def _next_ws_id() -> int:
global _ws_counter
ws_id = _ws_counter
_ws_counter += 1
return ws_id
def _format_ws_id(ws_id: int, *, bright: bool = False) -> str:
value = str(ws_id) if ws_id >= 100 else f"{ws_id:02d}"
color = _WS_OPEN if bright else _WS_CLOSE
return f"{color}{value.rjust(3)}{_RESET}"
def log_ws_open(request, extra: str | None = None) -> int:
"""Log WebSocket connection open. Returns connection ID for use in log_ws_close."""
ws_id = _next_ws_id()
client = request.client_ip or "-"
host = request.host or "-"
path = request.path
origin = request.headers.get("origin")
ip = _format_left(format_client_ip(client))
id_str = _format_ws_id(ws_id, bright=True)
origin_host = origin.split("://", 1)[-1] if origin else None
show_origin = origin_host and origin_host != host
method_str = _format_method_label("🔌", color=_WS_OPEN)
host_str = f"{_HOST}{host}{_RESET}"
path_str = f"{_PATH}{path}{_RESET}"
origin_str = f" {_RESET}from {_HOST}{origin_host}{_RESET}" if show_origin else ""
extra_str = f" {_TIMING}{extra}{_RESET}" if extra else ""
logger.info(
"%s %s %s %s%s%s",
ip,
id_str,
method_str,
host_str,
path_str,
origin_str + extra_str,
)
return ws_id
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 log_ws_close(ws_id: int, close_code: int | None, duration: float, extra: str | None = None) -> None:
"""Log WebSocket connection close with duration and status."""
id_str = _format_ws_id(ws_id)
timing = format_duration_ms(duration * 1000)
if close_code is None:
code = "----"
status = "unknown"
else:
code = str(close_code)
status = WS_CLOSE_CODES.get(close_code, f"code {close_code}")
method_str = _format_method_label("closed", color=_TIMING)
status_str = f"{_WS_STATUS}{code} {status}{_RESET}"
timing_str = f"{_TIMING}{timing}{_RESET}"
extra_str = f" {_TIMING}{extra}{_RESET}" if extra else ""
logger.info("%s %s %s %s %s%s", " " * 19, id_str, method_str, status_str, timing_str, extra_str)
def configure_access_logging() -> None:
"""Configure the cista.access logger to output to stderr."""
handler = logging.StreamHandler(sys.stderr)
handler.setFormatter(logging.Formatter("%(message)s"))
logger.addHandler(handler)
logger.setLevel(logging.INFO)
logger.propagate = False
_LEVEL_EMOJI = {
logging.DEBUG: "🔍",
logging.INFO: "️",
logging.WARNING: "⚠️",
logging.ERROR: "🛑",
logging.CRITICAL: "🛑",
}
class _EmojiFormatter(logging.Formatter):
"""Compact formatter: emoji + message, no timestamp/level text/logger name."""
def format(self, record: logging.LogRecord) -> str:
emoji = _LEVEL_EMOJI.get(record.levelno, "▪️")
sep = " " if record.levelno in (logging.INFO, logging.WARNING) else " "
return f"{emoji}{sep}{record.getMessage()}"
def configure_main_logging() -> None:
"""Replace Sanic's verbose 'Main yyyy-mm-dd INFO:' prefix with emoji-only format.
Patches LOGGING_CONFIG_DEFAULTS so the formatter survives every dictConfig
call Sanic makes during serve_single() / serve().
"""
from sanic.log import LOGGING_CONFIG_DEFAULTS
LOGGING_CONFIG_DEFAULTS["formatters"]["generic"] = {
"class": "cista.sanic_logging._EmojiFormatter",
}
# Also reformat any handlers already attached (covers the initial Sanic() call)
for name in ("sanic.root", "sanic.error", "sanic.server", "sanic.websockets"):
for handler in logging.getLogger(name).handlers:
handler.setFormatter(_EmojiFormatter())