ib-related: cope with invalid txn timestamps

That is inside embedded `.accounting.calc.dyn_parse_to_dt()` closure add
an optional `_invalid: list` param to where we can report
bad-timestamped records which we instead override and return as
`from_timestamp(0.)` (when the parser loop falls through) and report
later (in summary ) from the `.accounting.calc.iter_by_dt()` caller
. Add some logging and an optional debug block for future tracing.

piker/accounting/calc.py

@@ -22,7 +22,9 @@ you know when you're losing money (if possible) XD
 from __future__ import annotations
 from collections.abc import ValuesView
 from contextlib import contextmanager as cm
+from functools import partial
 from math import copysign
+from pprint import pformat
 from typing import (
     Any,
     Callable,
@@ -37,12 +39,16 @@ from pendulum import (
     parse,
 )
 
+from ..log import get_logger
+
 if TYPE_CHECKING:
     from ._ledger import (
         Transaction,
         TransactionLedger,
     )
 
+log = get_logger(__name__)
+
 
 def ppu(
     clears: Iterator[Transaction],
@@ -238,6 +244,9 @@ def iter_by_dt(
 
     def dyn_parse_to_dt(
         tx: tuple[str, dict[str, Any]] | Transaction,
+
+        debug: bool = False,
+        _invalid: list|None = None,
     ) -> DateTime:
 
         # handle `.items()` inputs
@@ -250,11 +259,16 @@ def iter_by_dt(
         # get best parser for this record..
         for k in parsers:
             if (
-                isdict and k in tx
-                 or getattr(tx, k, None)
+                (v := getattr(tx, k, None))
+                or
+                (
+                    isdict
+                    and
+                    (v := tx.get(k))
+                )
             ):
-                v = tx[k] if isdict else tx.dt
-                assert v is not None, f'No valid value for `{k}`!?'
+                # TODO? remove yah?
+                # v = tx[k] if isdict else tx.dt
 
                 # only call parser on the value if not None from
                 # the `parsers` table above (when NOT using
@@ -262,21 +276,54 @@ def iter_by_dt(
                 # sort on it directly
                 if (
                     not isinstance(v, DateTime)
-                    and (parser := parsers.get(k))
+                    and
+                    (parser := parsers.get(k))
                 ):
-                    return parser(v)
+                    ret = parser(v)
                 else:
-                    return v
+                    ret = v
 
+                return ret
+
+            else:
+                continue
+
+        # XXX: should never get here..
         else:
-            # XXX: should never get here..
-            breakpoint()
+            if debug:
+                import tractor
+                with tractor.devx.maybe_open_crash_handler():
+                    raise ValueError(
+                        f'Invalid txn time ??\n'
+                        f'txn-id: {k!r}\n'
+                        f'{k!r}: {v!r}\n'
+                    )
+                        # assert v is not None, f'No valid value for `{k}`!?'
 
-    entry: tuple[str, dict] | Transaction
+            if _invalid is not None:
+                _invalid.append(tx)
+                return from_timestamp(0.)
+
+                # breakpoint()
+
+    entry: tuple[str, dict]|Transaction
+    invalid: list = []
     for entry in sorted(
         records,
-        key=key or dyn_parse_to_dt,
+        key=key or partial(
+            dyn_parse_to_dt,
+            _invalid=invalid,
+        ),
     ):
+        if entry in invalid:
+            log.warning(
+                f'Ignoring txn w invalid timestamp ??\n'
+                f'{pformat(entry)}\n'
+                # f'txn-id: {k!r}\n'
+                # f'{k!r}: {v!r}\n'
+            )
+            continue
+
         # NOTE the type sig above; either pairs or txns B)
         yield entry