Signal hist start using `OptionPair.creation_timestamp`

Such that the `get_hist()` query func raises `DataUnavailable` with an
explicit message regarding the start of the (option) contract's
lifetime.

Other,
- mask some unused imports (for now?)
- drop a duplicate `tractor.get_console_log()` call which was causing
  duplicate console emits (it's already setup by brokerd init now).
- comment various unused code bits i found.
- add a info log around live quotes so we can see for the moment when
  they actually occur.. XD

piker/brokers/deribit/feed.py

@@ -18,56 +18,65 @@
 Deribit backend.
 
 '''
+from __future__ import annotations
 from contextlib import asynccontextmanager as acm
 from datetime import datetime
-from typing import Any, Optional, Callable
-from pprint import pformat
+from typing import (
+    # Any,
+    # Optional,
+    Callable,
+)
+# from pprint import pformat
 import time
 
 import trio
 from trio_typing import TaskStatus
 from pendulum import (
     from_timestamp,
-    now,
 )
-from rapidfuzz import process as fuzzy
 import numpy as np
 import tractor
 
 from piker.accounting import (
+    Asset,
     MktPair,
     unpack_fqme,
 )
 from piker.brokers import (
     open_cached_client,
     NoData,
+    DataUnavailable,
 )
 from piker._cacheables import (
     async_lifo_cache,
 )
-from piker.log import get_logger, get_console_log
-from piker.data import ShmArray
+from piker.log import (
+    get_logger,
+)
 from piker.data.validate import FeedInit
-from piker.brokers._util import (
-    BrokerError,
-    DataUnavailable,
-)
 
-from cryptofeed import FeedHandler
-from cryptofeed.defines import (
-    DERIBIT, L1_BOOK, TRADES, OPTION, CALL, PUT
-)
-from cryptofeed.symbols import Symbol
+# from cryptofeed import FeedHandler
+# from cryptofeed.defines import (
+#     DERIBIT,
+#     L1_BOOK,
+#     TRADES,
+#     OPTION,
+#     CALL,
+#     PUT,
+# )
+# from cryptofeed.symbols import Symbol
 
 from .api import (
-    Client, Trade,
-    get_config,
-    piker_sym_to_cb_sym, cb_sym_to_deribit_inst,
+    Client,
+    # get_config,
+    piker_sym_to_cb_sym,
+    cb_sym_to_deribit_inst,
     maybe_open_price_feed
 )
 from .venues import (
     Pair,
     OptionPair,
+    Trade,
 )
 
 _spawn_kwargs = {
@@ -86,6 +95,10 @@ async def open_history_client(
     # TODO implement history getter for the new storage layer.
     async with open_cached_client('deribit') as client:
 
+        pair: OptionPair = client._pairs[mkt.dst.name]
+        # XXX NOTE, the cuckers use ms !!!
+        creation_time_s: int = pair.creation_timestamp/1000
+
         async def get_ohlc(
             timeframe: float,
             end_dt: datetime | None = None,
@@ -105,6 +118,31 @@ async def open_history_client(
                 end_dt=end_dt,
             )
             if len(array) == 0:
+                if (
+                    end_dt is None
+                ):
+                    raise DataUnavailable(
+                        'No history seems to exist yet?\n\n'
+                        f'{mkt}'
+                    )
+                elif (
+                    end_dt
+                    and
+                    end_dt.timestamp() < creation_time_s
+                ):
+                    # the contract can't have history
+                    # before it was created.
+                    pair_type_str: str = type(pair).__name__
+                    create_dt: datetime = from_timestamp(creation_time_s)
+                    raise DataUnavailable(
+                        f'No history prior to\n'
+                        f'`{pair_type_str}.creation_timestamp: int = '
+                        f'{pair.creation_timestamp}\n\n'
+                        f'------ deribit sux ------\n'
+                        f'WHICH IN "NORMAL PEOPLE WHO USE EPOCH TIME" form is,\n'
+                        f'creation_time_s: {creation_time_s}\n'
+                        f'create_dt: {create_dt}\n'
+                    )
                 raise NoData(
                     f'No frame for {start_dt} -> {end_dt}\n'
                 )
@@ -126,14 +164,20 @@ async def open_history_client(
 
             return array, start_dt, end_dt
 
-        yield get_ohlc, {'erlangs': 3, 'rate': 3}
+        yield (
+            get_ohlc,
+            {  # backfill config
+                'erlangs': 3,
+                'rate': 3,
+            }
+        )
 
 
 @async_lifo_cache()
 async def get_mkt_info(
     fqme: str,
 
-) -> tuple[MktPair, Pair] | None:
+) -> tuple[MktPair, Pair|OptionPair] | None:
 
     # uppercase since kraken bs_mktid is always upper
     if 'deribit' not in fqme.lower():
@@ -149,7 +193,7 @@ async def get_mkt_info(
     # returns, always!
     expiry: str = expiry.upper()
     venue: str = venue.upper()
-    venue_lower: str = venue.lower()
+    # venue_lower: str = venue.lower()
 
     mkt_mode: str = 'option'
 
@@ -195,8 +239,6 @@ async def stream_quotes(
     task_status: TaskStatus[tuple[dict, dict]] = trio.TASK_STATUS_IGNORED,
 
 ) -> None:
-    # XXX: required to propagate ``tractor`` loglevel to piker logging
-    get_console_log(loglevel or tractor.current_actor().loglevel)
 
     sym = symbols[0].split('.')[0]
 
@@ -217,7 +259,8 @@ async def stream_quotes(
 
         async with maybe_open_price_feed(sym) as stream:
 
-            cache = client._pairs
+            # TODO, uhh use it ?? XD
+            # cache = client._pairs
 
             last_trades = (await client.last_trades(
                 cb_sym_to_deribit_inst(nsym), count=1)).trades
@@ -247,9 +290,16 @@ async def stream_quotes(
 
             feed_is_live.set()
 
+            # deliver until cancelled
             async for typ, quote in stream:
-                topic = quote['symbol']
-                await send_chan.send({topic: quote})
+                topic: str = quote['symbol']
+                log.info(
+                    f'deribit {typ!r} quote\n\n'
+                    f'{quote}\n'
+                )
+                await send_chan.send({
+                    topic: quote,
+                })
 
 
 @tractor.context
@@ -259,13 +309,14 @@ async def open_symbol_search(
     async with open_cached_client('deribit') as client:
 
         # load all symbols locally for fast search
-        cache = client._pairs
+        # cache = client._pairs
         await ctx.started()
 
         async with ctx.open_stream() as stream:
 
             pattern: str
             async for pattern in stream:
+
                 # NOTE: pattern fuzzy-matching is done within
                 # the methd impl.
                 pairs: dict[str, Pair] = await client.search_symbols(