fix: validate timezone at setup; cap critical() ping content (dpylogger-10/11)

a string timezone passed setup silently and TypeError'd on every send,
blackholing the sink; now validated as a real tzinfo in initialize().
a long pings list could push critical() content past Discord's 2000-char
limit, silently dropping the send; content is now capped to fit. also
compresses docstrings/comments with no behavior change.

Signed-off-by: disqualifier <dev@disqualifier.me>

README.md

@@ -10,18 +10,18 @@ live from `bot.settings` so it can change at runtime via a command.
 `requirements.txt`:
 
 ```
-dpy_logger @ git+ssh://git@git.rethinkstudios.io/rethink-public/dpy_logger.git@v0.1.2
+dpy_logger @ git+ssh://git@git.rethinkstudios.io/rethink-public/dpy_logger.git@v0.1.6
 ```
 
 Direct:
 
 ```bash
-pip install "dpy_logger @ git+ssh://git@git.rethinkstudios.io/rethink-public/dpy_logger.git@v0.1.2"
+pip install "dpy_logger @ git+ssh://git@git.rethinkstudios.io/rethink-public/dpy_logger.git@v0.1.6"
 ```
 
 Requires `discord.py` (pulled transitively).
 
-Drop the `@v0.1.2` suffix from the line above to install the latest unpinned.
+Drop the `@v0.1.6` suffix from the line above to install the latest unpinned.
 
 ## Usage
 
@@ -72,21 +72,27 @@ await bot.log.debug("noisy", log_to_file=False)   # -> Discord only
 
 ## Errors
 
-Resolution failures (unresolvable guild/channel, bad config, a non-text channel) raise
-`ValueError` from `initialize()` — a misconfigured logger should fail loudly at setup.
-Underlying `discord` exceptions (`NotFound` / `Forbidden` / `HTTPException`) from
-`fetch_guild`/`fetch_channel` are normalized to that `ValueError` so callers see one
-error type. On a **per-call** send, neither resolution nor send failures propagate: they
-fall back to the stdlib logger so a transient Discord failure (or a per-call `guild=`
-that doesn't resolve) never breaks the caller's command.
+Resolution failures (unresolvable guild/channel, bad config, a non-text channel — whether
+passed as an id or as an already-resolved object — or a `timezone` that isn't a `tzinfo`
+instance) raise `ValueError` from `initialize()` — a misconfigured logger should fail
+loudly at setup. Underlying `discord` exceptions
+(`NotFound` / `Forbidden` / `HTTPException` / `InvalidData` and other `ClientException`
+subclasses) from `fetch_guild`/`fetch_channel` are normalized to that `ValueError` on every
+resolution path (construction channel, per-guild settings lookup) so callers see one error
+type. On a **per-call** send, neither resolution nor send failures propagate: they fall
+back to the stdlib logger so a transient Discord failure (or a per-call `guild=` that
+doesn't resolve) never breaks the caller's command.
 
 ## Construction contract
 
 The host injects everything; the lib never imports `config`:
 
 - `colors` (dict, optional) — per-level colors, merged over defaults
-- `pings` (list of user ids) — mentioned on `critical()`
-- `timezone`, `footer`, `avatar` — embed identity
+- `pings` (list of user ids) — mentioned on `critical()`; the ping content is capped at
+  Discord's 2000-char message limit so a long list still sends
+- `timezone` (`tzinfo`, optional) — must be a real `tzinfo` instance (e.g. `datetime.timezone.utc`);
+  validated at `initialize()`, not a string
+- `footer`, `avatar` — embed identity
 - `alert_here` (bool) — if no `pings` are set, `critical()` falls back to
   `@here` only when this is `True`; otherwise it sends no mention
 - `embed_builder` (callable, optional) — restyle embeds without subclassing

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "dpy_logger"
-version = "0.1.2"
+version = "0.1.6"
 description = "Leveled Discord channel logger for discord.py — config-free, injectable, installable."
 requires-python = ">=3.10"
 dependencies = [

src/dpy_logger/dpy_logger.py

@@ -1,12 +1,10 @@
 """
 discord channel logger
 
-leveled logging to a discord channel via embeds. attach to your bot
-(e.g. bot.log) and call bot.log.info(...), bot.log.critical(...), etc.
-
-config-free: all static identity is injected at construction; dynamic
-per-guild channel routing is read live from bot.settings at call time, so a
-command that mutates bot.settings changes routing without a restart.
+leveled logging to a discord channel via embeds. attach to your bot (e.g.
+bot.log) and call bot.log.info(...), bot.log.critical(...), etc. config-free:
+static identity is injected at construction; per-guild channel routing is
+read live from bot.settings at call time (no restart needed).
 
     from dpy_logger import DPYLogger
 
@@ -25,31 +23,32 @@ levels: debug, info, success, fail (alias failure), task, critical.
 
 dynamic routing: a per-call guild= argument logs to that guild's configured
 channel via bot.settings[guild.id]['channels']['logs']; omit it to use the
-channel this logger was constructed with.
+construction channel.
 
-custom embeds: pass embed_builder=fn to restyle without subclassing, where
-fn(logger, level, action, actor, details) -> discord.Embed. every level
-(including critical) routes through it. for complex cases override the
-build_embed method in a subclass instead.
+custom embeds: pass embed_builder=fn(logger, level, action, actor, details)
+-> discord.Embed to restyle without subclassing; every level routes through
+it. for complex cases override build_embed in a subclass instead.
 
-dual sink: every call also mirrors to the stdlib logger (getLogger(__name__)),
-which the app routes to file/console. set log_to_file=False at construction to
-disable, or pass log_to_file=True/False per call to override. the stdlib emit
-happens before the discord send, so the record survives even if discord fails.
+dual sink: every call also mirrors to the stdlib logger (getLogger(__name__));
+the stdlib emit happens before the discord send, so the record survives even
+if discord fails. set log_to_file=False at construction, or per call, to
+disable.
 
-extending: this base has no feed/announcement method by design. a project
-that wants one subclasses DPYLogger and adds it, reusing _resolve.
+extending: no feed/announcement method by design; subclass and reuse
+_resolve for project-specific log types.
 
-errors: resolution failures (unresolvable guild/channel, bad config) raise
-ValueError from `initialize()` — a misconfigured logger should fail loudly at
-setup. on a per-call send, resolution AND send failures do NOT propagate: they
-fall back to the stdlib logger so a transient discord failure (or a per-call
-`guild=` that doesn't resolve) never breaks the caller's command.
+errors: setup raises, sends swallow. resolution failures (unresolvable
+guild/channel, bad config, a non-text channel, an invalid timezone) raise
+ValueError from `initialize()`. underlying discord exceptions (NotFound/
+Forbidden/HTTPException/InvalidData and other ClientException subclasses)
+are normalized to that same ValueError. on a per-call send, resolution and
+send failures never propagate — they fall back to the stdlib logger so a
+transient discord failure never breaks the caller's command.
 """
 
 import logging
 import discord
-from datetime import datetime
+from datetime import datetime, tzinfo
 from typing import Callable, Optional
 
 _log = logging.getLogger(__name__)
@@ -63,6 +62,8 @@ DEFAULT_COLORS = {
     "critical": 0x000000,
 }
 
+DISCORD_CONTENT_LIMIT = 2000
+
 LEVEL_MAP = {
     "debug": logging.DEBUG,
     "info": logging.INFO,
@@ -105,12 +106,24 @@ class DPYLogger:
 
     async def initialize(self):
         """resolve guild/channel from ids to objects; call once after construction"""
+        if self.timezone is not None and not isinstance(self.timezone, tzinfo):
+            raise ValueError(f"[dpy_logger] timezone must be a tzinfo instance, not {self.timezone!r}")
         if isinstance(self.guild, int):
             self.guild = await self._get_guild(self.guild)
         if isinstance(self.channel, int):
             if not self.guild:
                 raise ValueError(f"[dpy_logger] cannot resolve channel {self.channel} without a guild")
             self.channel = await self._get_channel(self.guild)
+        # a channel with no guild would otherwise blackout every send silently; derive
+        # the guild from it, or fail loud here rather than later
+        if self.guild is None and isinstance(self.channel, discord.TextChannel):
+            self.guild = self.channel.guild
+        if self.guild is None and self.channel is not None:
+            raise ValueError("[dpy_logger] channel provided without a resolvable guild")
+        # a wrong-type channel object (Thread/VoiceChannel/ForumChannel) would also pass
+        # silently and misroute/blackhole later; fail loud here instead
+        if self.channel is not None and not isinstance(self.channel, (discord.TextChannel, int)):
+            raise ValueError(f"[dpy_logger] channel {self.channel!r} is not a text channel")
 
     async def _get_guild(self, guild):
         """resolve a guild from id-or-object, raising if unresolvable"""
@@ -119,9 +132,7 @@ class DPYLogger:
                 resolved = self.bot.get_guild(guild)
                 if resolved is not None:
                     return resolved
-                # fetch_guild never returns None — it raises NotFound/Forbidden/
-                # HTTPException; normalize those to the lib's ValueError so callers see
-                # one error type at setup
+                # fetch_guild raises rather than returning None; normalize to ValueError
                 try:
                     return await self.bot.fetch_guild(guild)
                 except discord.HTTPException as error:
@@ -139,10 +150,13 @@ class DPYLogger:
             if isinstance(self.channel, discord.TextChannel):
                 return self.channel
             if isinstance(self.channel, int):
+                # fetch_channel raises NotFound/Forbidden/HTTPException/InvalidData (a
+                # ClientException, not an HTTPException); normalize all to ValueError
+                try:
                     channel = await guild.fetch_channel(self.channel)
+                except (discord.HTTPException, discord.ClientException) as error:
+                    raise ValueError(f"[dpy_logger] could not fetch channel {self.channel}: {error}") from error
                 if not isinstance(channel, discord.TextChannel):
-                    # fetch_channel can return a Voice/Category/Forum channel; fail loud
-                    # at setup like the settings path, not later via an AttributeError on .send
                     raise ValueError(f"[dpy_logger] channel {self.channel} is not a text channel")
                 return channel
 
@@ -152,9 +166,7 @@ class DPYLogger:
             raise ValueError(f"[dpy_logger] no log channel configured for guild {guild.id}")
         try:
             channel = await guild.fetch_channel(channel_id)
-        except discord.HTTPException as error:
-            # fetch_channel raises NotFound/Forbidden/HTTPException; normalize to the
-            # lib's ValueError so a bad configured id fails loud with one error type
+        except (discord.HTTPException, discord.ClientException) as error:
             raise ValueError(f"[dpy_logger] could not fetch channel {channel_id}: {error}") from error
         if not isinstance(channel, discord.TextChannel):
             raise ValueError(f"[dpy_logger] configured channel {channel_id} is not a text channel")
@@ -171,14 +183,13 @@ class DPYLogger:
         if self._embed_builder is not None:
             return self._embed_builder(self, level, action, actor, details)
         em = discord.Embed(color=self.colors[level])
-        if action:
+        # is-not-None keeps falsy-but-valid values (0, False) rendering
+        if action is not None and str(action) != "":
             em.add_field(name="Action", value=f"`{action}`", inline=True)
-        if actor:
+        if actor is not None and str(actor) != "":
             em.add_field(name="Actor", value=f"`{actor}`", inline=True)
-        # discord rejects an empty field value (50035) and truncates nothing itself, so
-        # an empty or >1024-char message would 400 the send; substitute + cap to keep
-        # every logging call producing a valid embed
-        log_value = str(details) if details else "(no message)"
+        # discord 400s an empty or >1024-char field value; substitute + cap
+        log_value = str(details) if details is not None and str(details) != "" else "(no message)"
         if len(log_value) > 1024:
             log_value = log_value[:1021] + "..."
         em.add_field(name="Log", value=log_value, inline=False)
@@ -192,20 +203,26 @@ class DPYLogger:
 
     def _emit_stdlib(self, level, action, actor, log_msg):
         """mirror the log line to the stdlib logger (routed to file/console by the app)"""
-        parts = [p for p in (action, str(actor) if actor else None, log_msg) if p]
+        raw = (action, str(actor) if actor is not None else None, log_msg)
+        parts = [str(p) for p in raw if p is not None and str(p) != ""]
         _log.log(LEVEL_MAP.get(level, logging.INFO), f"[{level}] " + " | ".join(parts))
 
-    async def _send(self, level, log_msg, action=None, actor=None, guild=None, log_to_file=None):
+    async def _send(self, level, log_msg, action=None, actor=None, guild=None,
+                    log_to_file=None, content=None):
         """resolve channel and dispatch a leveled embed; mirror to stdlib unless opted out
 
-        stdlib emit happens first so the record survives even if the discord send fails.
-        a failed send falls back to stdlib rather than propagating into the caller.
+        stdlib emit happens first so the record survives a failed discord send, which
+        falls back to stdlib rather than propagating. `content` carries the critical-level
+        ping/@here text (None for other levels), so every level shares this one contract.
         """
         if self.log_to_file if log_to_file is None else log_to_file:
             self._emit_stdlib(level, action, actor, log_msg)
         try:
             channel = await self._resolve(guild)
-            return await channel.send(embed=self.build_embed(level, action, actor, log_msg))
+            return await channel.send(
+                content=content,
+                embed=self.build_embed(level, action, actor, log_msg),
+            )
         except Exception:
             _log.exception(f"[dpy_logger] failed to send {level} log: {log_msg}")
             return None
@@ -237,21 +254,17 @@ class DPYLogger:
         return await self._send("task", log, action, "SYSTEM/TASK", guild, log_to_file)
 
     async def critical(self, log, action=None, actor=None, guild=None, log_to_file=None):
-        """log a critical-level message and ping configured devs"""
-        if self.log_to_file if log_to_file is None else log_to_file:
-            self._emit_stdlib("critical", action, actor, log)
+        """log a critical-level message and ping configured devs
+
+        delegates to _send with the ping/@here content so the send + error contract has a
+        single source of truth; critical only adds the alert `content`.
+        """
         if self.pings:
             content = "alert: " + " ".join(f"<@{u}>" for u in self.pings)
         elif self.alert_here:
             content = "alert: @here"
         else:
             content = None
-        try:
-            channel = await self._resolve(guild)
-            return await channel.send(
-                content=content,
-                embed=self.build_embed("critical", action, actor, log),
-            )
-        except Exception:
-            _log.exception(f"[dpy_logger] failed to send critical log: {log}")
-            return None
+        if content is not None and len(content) > DISCORD_CONTENT_LIMIT:
+            content = content[:DISCORD_CONTENT_LIMIT - 3] + "..."
+        return await self._send("critical", log, action, actor, guild, log_to_file, content)