`.brokers.cli`: module type and todo for `--pdb` flag to NOT src from sub-cmd

- use more compact optional value style with `|`-union
- fix `.flows` typing-only import since we need `MktPair` to be
  immediately defined for use on a `msgspec.Struct` field.
- more "tree-like" warning msg in `.validate()` reporting.

piker/accounting/_pos.py

@@ -30,7 +30,8 @@ from types import ModuleType
 from typing import (
     Any,
     Iterator,
-    Generator
+    Generator,
+    TYPE_CHECKING,
 )
 
 import pendulum
@@ -59,8 +60,10 @@ from ..clearing._messages import (
     BrokerdPosition,
 )
 from piker.types import Struct
+from piker.log import get_logger
+
+if TYPE_CHECKING:
     from piker.data._symcache import SymbologyCache
-from ..log import get_logger
 
 log = get_logger(__name__)
 
@@ -493,6 +496,17 @@ class Account(Struct):
 
         _mktmap_table: dict[str, MktPair] | None = None,
 
+        only_require: list[str]|True = True,
+        # ^list of fqmes that are "required" to be processed from
+        # this ledger pass; we often don't care about others and
+        # definitely shouldn't always error in such cases.
+        # (eg. broker backend loaded that doesn't yet supsport the
+        # symcache but also, inside the paper engine we don't ad-hoc
+        # request `get_mkt_info()` for every symbol in the ledger,
+        # only the one for which we're simulating against).
+        # TODO, not sure if there's a better soln for this, ideally
+        # all backends get symcache support afap i guess..
+
     ) -> dict[str, Position]:
         '''
         Update the internal `.pps[str, Position]` table from input
@@ -535,11 +549,32 @@ class Account(Struct):
                 if _mktmap_table is None:
                     raise
 
+                required: bool = (
+                    only_require is True
+                    or (
+                        only_require is not True
+                        and
+                        fqme in only_require
+                    )
+                )
                 # XXX: caller is allowed to provide a fallback
                 # mktmap table for the case where a new position is
                 # being added and the preloaded symcache didn't
                 # have this entry prior (eg. with frickin IB..)
-                mkt = _mktmap_table[fqme]
+                if (
+                    not (mkt := _mktmap_table.get(fqme))
+                    and
+                    required
+                ):
+                    raise
+
+                elif not required:
+                    continue
+
+                else:
+                    # should be an entry retreived somewhere
+                    assert mkt
+
 
             if not (pos := pps.get(bs_mktid)):
 
@@ -656,7 +691,7 @@ class Account(Struct):
     def write_config(self) -> None:
         '''
         Write the current account state to the user's account TOML file, normally
-        something like ``pps.toml``.
+        something like `pps.toml`.
 
         '''
         # TODO: show diff output?

piker/brokers/__init__.py

@@ -98,13 +98,14 @@ async def open_cached_client(
     If one has not been setup do it and cache it.
 
     '''
-    brokermod = get_brokermod(brokername)
+    brokermod: ModuleType = get_brokermod(brokername)
+
+    # TODO: make abstract or `typing.Protocol`
+    # client: Client
     async with maybe_open_context(
         acm_func=brokermod.get_client,
         kwargs=kwargs,
-
     ) as (cache_hit, client):
-
         if cache_hit:
             log.runtime(f'Reusing existing {client}')
 

piker/brokers/cli.py

@@ -471,11 +471,15 @@ def search(
 
     '''
     # global opts
-    brokermods = list(config['brokermods'].values())
+    brokermods: list[ModuleType] = list(config['brokermods'].values())
+
+    # TODO: this is coming from the `search --pdb` NOT from
+    # the `piker --pdb` XD ..
+    # -[ ] pull from the parent click ctx's values..dumdum
+    # assert pdb
 
     # define tractor entrypoint
     async def main(func):
-
         async with maybe_open_pikerd(
             loglevel=config['loglevel'],
             debug_mode=pdb,

piker/brokers/core.py

@@ -22,7 +22,9 @@ routines should be primitive data types where possible.
 """
 import inspect
 from types import ModuleType
-from typing import List, Dict, Any, Optional
+from typing import (
+    Any,
+)
 
 import trio
 
@@ -34,8 +36,10 @@ from ..accounting import MktPair
 
 
 async def api(brokername: str, methname: str, **kwargs) -> dict:
-    """Make (proxy through) a broker API call by name and return its result.
+    '''
-    """
+    Make (proxy through) a broker API call by name and return its result.
+
+    '''
     brokermod = get_brokermod(brokername)
     async with brokermod.get_client() as client:
         meth = getattr(client, methname, None)
@@ -62,10 +66,14 @@ async def api(brokername: str, methname: str, **kwargs) -> dict:
 
 async def stocks_quote(
     brokermod: ModuleType,
-    tickers: List[str]
+    tickers: list[str]
-) -> Dict[str, Dict[str, Any]]:
+
-    """Return quotes dict for ``tickers``.
+) -> dict[str, dict[str, Any]]:
-    """
+    '''
+    Return a `dict` of snapshot quotes for the provided input
+    `tickers`: a `list` of fqmes.
+
+    '''
     async with brokermod.get_client() as client:
         return await client.quote(tickers)
 
@@ -74,13 +82,15 @@ async def stocks_quote(
 async def option_chain(
     brokermod: ModuleType,
     symbol: str,
-    date: Optional[str] = None,
+    date: str|None = None,
-) -> Dict[str, Dict[str, Dict[str, Any]]]:
+) -> dict[str, dict[str, dict[str, Any]]]:
-    """Return option chain for ``symbol`` for ``date``.
+    '''
+    Return option chain for ``symbol`` for ``date``.
 
     By default all expiries are returned. If ``date`` is provided
     then contract quotes for that single expiry are returned.
-    """
+
+    '''
     async with brokermod.get_client() as client:
         if date:
             id = int((await client.tickers2ids([symbol]))[symbol])
@@ -98,7 +108,7 @@ async def option_chain(
 # async def contracts(
 #     brokermod: ModuleType,
 #     symbol: str,
-# ) -> Dict[str, Dict[str, Dict[str, Any]]]:
+# ) -> dict[str, dict[str, dict[str, Any]]]:
 #     """Return option contracts (all expiries) for ``symbol``.
 #     """
 #     async with brokermod.get_client() as client:
@@ -110,15 +120,24 @@ async def bars(
     brokermod: ModuleType,
     symbol: str,
     **kwargs,
-) -> Dict[str, Dict[str, Dict[str, Any]]]:
+) -> dict[str, dict[str, dict[str, Any]]]:
-    """Return option contracts (all expiries) for ``symbol``.
+    '''
-    """
+    Return option contracts (all expiries) for ``symbol``.
+
+    '''
     async with brokermod.get_client() as client:
         return await client.bars(symbol, **kwargs)
 
 
-async def search_w_brokerd(name: str, pattern: str) -> dict:
+async def search_w_brokerd(
+    name: str,
+    pattern: str,
+) -> dict:
 
+    # TODO: WHY NOT WORK!?!
+    # when we `step` through the next block?
+    # import tractor
+    # await tractor.pause()
     async with open_cached_client(name) as client:
 
         # TODO: support multiple asset type concurrent searches.
@@ -130,12 +149,12 @@ async def symbol_search(
     pattern: str,
     **kwargs,
 
-) -> Dict[str, Dict[str, Dict[str, Any]]]:
+) -> dict[str, dict[str, dict[str, Any]]]:
     '''
     Return symbol info from broker.
 
     '''
-    results = []
+    results: list[str] = []
 
     async def search_backend(
         brokermod: ModuleType
@@ -143,6 +162,13 @@ async def symbol_search(
 
         brokername: str = mod.name
 
+        # TODO: figure this the FUCK OUT
+        # -> ok so obvi in the root actor any async task that's
+        # spawned outside the main tractor-root-actor task needs to
+        # call this..
+        # await tractor.devx._debug.maybe_init_greenback()
+        # tractor.pause_from_sync()
+
         async with maybe_spawn_brokerd(
             mod.name,
             infect_asyncio=getattr(
@@ -162,7 +188,6 @@ async def symbol_search(
             ))
 
     async with trio.open_nursery() as n:
-
         for mod in brokermods:
             n.start_soon(search_backend, mod.name)
 
@@ -172,11 +197,13 @@ async def symbol_search(
 async def mkt_info(
     brokermod: ModuleType,
     fqme: str,
+
     **kwargs,
 
 ) -> MktPair:
     '''
-    Return MktPair info from broker including src and dst assets.
+    Return the `piker.accounting.MktPair` info struct from a given
+    backend broker tradable src/dst asset pair.
 
     '''
     async with open_cached_client(brokermod.name) as client:

piker/clearing/_paper_engine.py

@@ -655,6 +655,7 @@ async def open_trade_dialog(
                 # in) use manually constructed table from calling
                 # the `.get_mkt_info()` provider EP above.
                 _mktmap_table=mkt_by_fqme,
+                only_require=list(mkt_by_fqme),
             )
 
             pp_msgs: list[BrokerdPosition] = []

piker/data/_symcache.py

@@ -31,6 +31,7 @@ from pathlib import Path
 from pprint import pformat
 from typing import (
     Any,
+    Callable,
     Sequence,
     Hashable,
     TYPE_CHECKING,
@@ -56,7 +57,7 @@ from piker.brokers import (
 )
 
 if TYPE_CHECKING:
-    from ..accounting import (
+    from piker.accounting import (
         Asset,
         MktPair,
     )
@@ -149,19 +150,36 @@ class SymbologyCache(Struct):
                     'Implement `Client.get_assets()`!'
                 )
 
-            if get_mkt_pairs := getattr(client, 'get_mkt_pairs', None):
+            get_mkt_pairs: Callable|None = getattr(
+                client,
+                'get_mkt_pairs',
+                None,
+            )
+            if not get_mkt_pairs:
+                log.warning(
+                    'No symbology cache `Pair` support for `{provider}`..\n'
+                    'Implement `Client.get_mkt_pairs()`!'
+                )
+                return self
 
             pairs: dict[str, Struct] = await get_mkt_pairs()
-                for bs_fqme, pair in pairs.items():
+            if not pairs:
+                log.warning(
+                    'No pairs from intial {provider!r} sym-cache request?\n\n'
+                    '`Client.get_mkt_pairs()` -> {pairs!r} ?'
+                )
+                return self
 
-                    # NOTE: every backend defined pair should
+            for bs_fqme, pair in pairs.items():
-                    # declare it's ns path for roundtrip
-                    # serialization lookup.
                 if not getattr(pair, 'ns_path', None):
+                    # XXX: every backend defined pair must declare
+                    # a `.ns_path: tractor.NamespacePath` to enable
+                    # roundtrip serialization lookup from a local
+                    # cache file.
                     raise TypeError(
                         f'Pair-struct for {self.mod.name} MUST define a '
-                            '`.ns_path: str`!\n'
+                        '`.ns_path: str`!\n\n'
-                            f'{pair}'
+                        f'{pair!r}'
                     )
 
                 entry = await self.mod.get_mkt_info(pair.bs_fqme)
@@ -195,12 +213,6 @@ class SymbologyCache(Struct):
                 pair,
             )
 
-            else:
-                log.warning(
-                    'No symbology cache `Pair` support for `{provider}`..\n'
-                    'Implement `Client.get_mkt_pairs()`!'
-                )
-
         return self
 
     @classmethod

piker/data/feed.py

@@ -786,7 +786,6 @@ async def install_brokerd_search(
 
 @acm
 async def maybe_open_feed(
-
     fqmes: list[str],
     loglevel: str | None = None,
 
@@ -840,7 +839,6 @@ async def maybe_open_feed(
 
 @acm
 async def open_feed(
-
     fqmes: list[str],
 
     loglevel: str|None = None,

piker/data/flows.py

@@ -36,10 +36,10 @@ from ._sharedmem import (
     ShmArray,
     _Token,
 )
+from piker.accounting import MktPair
 
 if TYPE_CHECKING:
-    from ..accounting import MktPair
+    from piker.data.feed import Feed
-    from .feed import Feed
 
 
 class Flume(Struct):

piker/data/validate.py

@@ -113,9 +113,9 @@ def validate_backend(
             )
             if ep is None:
                 log.warning(
-                    f'Provider backend {mod.name} is missing '
+                    f'Provider backend {mod.name!r} is missing '
-                    f'{daemon_name} support :(\n'
+                    f'{daemon_name!r} support?\n'
-                    f'The following endpoint is missing: {name}'
+                    f'|_module endpoint-func missing: {name!r}\n'
                 )
 
     inits: list[