ib: fix mktpair fallback table: use `Client._con2mkts` to translate..

Previously we were assuming that the `Client._contracts: dict[str,
Contract]` would suffice this directly, which obviously isn't true XD

Also,
- add the `NSE` venue to skip list.
- use new `rapidfuzz.process.extract()` lib API.
- only get con deats for non null exchange names..

piker/brokers/ib/api.py

@@ -416,20 +416,26 @@ class Client:
 
         futs: list[asyncio.Future] = []
         for con in contracts:
-            if con.primaryExchange not in _exch_skip_list:
+            exch: str = con.primaryExchange or con.exchange
+            if (
+                exch
+                and exch not in _exch_skip_list
+            ):
                 futs.append(self.ib.reqContractDetailsAsync(con))
 
         # batch request all details
         try:
             results: list[ContractDetails] = await asyncio.gather(*futs)
         except RequestError as err:
-            msg = err.message
+            msg: str = err.message
             if (
                 'No security definition' in msg
             ):
                 log.warning(f'{msg}: {contracts}')
                 return {}
 
+            raise
+
         # one set per future result
         details: dict[str, ContractDetails] = {}
         for details_set in results:
@@ -1356,8 +1362,7 @@ async def open_aio_client_method_relay(
     # relay all method requests to ``asyncio``-side client and deliver
     # back results
     while not to_trio._closed:
-        msg = await from_trio.get()
-
+        msg: tuple[str, dict] | dict | None = await from_trio.get()
         match msg:
             case None:  # termination sentinel
                 print('asyncio PROXY-RELAY SHUTDOWN')

piker/brokers/ib/broker.py

@@ -846,6 +846,18 @@ async def emit_pp_update(
 
         # con: Contract = fill.contract
 
+        # provide a backup fqme -> MktPair table in case the
+        # symcache does not (yet) have an entry for the current mkt
+        # txn.
+        backup_table: dict[str, MktPair] = {}
+        for tid, txn in trans.items():
+            fqme: str = txn.fqme
+            if fqme not in ledger.symcache.mktmaps:
+                # bs_mktid: str = txn.bs_mktid
+                backup_table[fqme] = client._cons2mkts[
+                    client._contracts[fqme]
+                ]
+
         acnt.update_from_ledger(
             trans,
 
@@ -855,7 +867,7 @@ async def emit_pp_update(
 
             # TODO: remove this hack by attempting to symcache an
             # incrementally updated table?
-            _mktmap_table=client._contracts
+            _mktmap_table=backup_table,
         )
 
         # re-compute all positions that have changed state.

piker/brokers/ib/symbols.py

@@ -165,6 +165,7 @@ _exch_skip_list = {
     'MEXI',  # mexican stocks
 
     # no idea
+    'NSE',
     'VALUE',
     'FUNDSERV',
     'SWB2',
@@ -269,7 +270,7 @@ async def open_symbol_search(ctx: tractor.Context) -> None:
 
                     stock_results.extend(results)
 
-                for i in range(10):
+                for _ in range(10):
                     with trio.move_on_after(3) as cs:
                         async with trio.open_nursery() as sn:
                             sn.start_soon(
@@ -292,7 +293,7 @@ async def open_symbol_search(ctx: tractor.Context) -> None:
                         break
 
                     # # match against our ad-hoc set immediately
-                    # adhoc_matches = fuzzy.extractBests(
+                    # adhoc_matches = fuzzy.extract(
                     #     pattern,
                     #     list(_adhoc_futes_set),
                     #     score_cutoff=90,
@@ -305,7 +306,7 @@ async def open_symbol_search(ctx: tractor.Context) -> None:
                     #     adhoc_matches}
 
                 log.debug(f'fuzzy matching stocks {stock_results}')
-                stock_matches = fuzzy.extractBests(
+                stock_matches = fuzzy.extract(
                     pattern,
                     stock_results,
                     score_cutoff=50,
@@ -423,9 +424,9 @@ def con2fqme(
         except KeyError:
             pass
 
-    suffix = con.primaryExchange or con.exchange
-    symbol = con.symbol
-    expiry = con.lastTradeDateOrContractMonth or ''
+    suffix: str = con.primaryExchange or con.exchange
+    symbol: str = con.symbol
+    expiry: str = con.lastTradeDateOrContractMonth or ''
 
     match con:
         case ibis.Option():