Deribit api key changes introduce:

- `get_timestamp_int`: added this is the hack, so we can aboid use the custom deribit date format.

- `get_currencies`: added so we could get all deribit's available currencies.

- Also a couple of format fixes.

piker/brokers/deribit/api.py

@@ -52,12 +52,14 @@ from cryptofeed import FeedHandler
 from cryptofeed.defines import (
     DERIBIT,
     L1_BOOK, TRADES,
-    OPTION, CALL, PUT
+    OPTION, CALL, PUT,
+    OPEN_INTEREST,
 )
 from cryptofeed.symbols import Symbol
 from cryptofeed.types import (
     L1Book,
     Trade,
+    OpenInterest,
 )
 from piker.brokers import SymbolNotFound
 from .venues import (
@@ -110,20 +112,25 @@ def deribit_timestamp(when: datetime) -> int:
     )
 
 
+def get_timestamp_int(expiry_date: str) -> int:
+    return int(time.mktime(time.strptime(expiry_date, '%d%b%y')))
+
+
 def str_to_cb_sym(name: str) -> Symbol:
     base, strike_price, expiry_date, option_type = name.split('-')
 
     quote = base
 
     if option_type == 'put':
-        option_type = PUT 
-    elif option_type  == 'call':
+        option_type = PUT
+    elif option_type == 'call':
         option_type = CALL
     else:
         raise Exception("Couldn\'t parse option type")
 
-    new_expiry_date = get_values_from_cb_normalized_date(expiry_date)
-
+    new_expiry_date: int = get_timestamp_int(
+        get_values_from_cb_normalized_date(expiry_date)
+    )
     return Symbol(
         base=base,
         quote=quote,
@@ -143,11 +150,12 @@ def piker_sym_to_cb_sym(name: str) -> Symbol:
     )= tuple(
         name.upper().split('-'))
 
+    new_expiry_date = get_timestamp_int(expiry_date)
     quote: str = base
 
-    if option_type == 'P':
-        option_type = PUT 
-    elif option_type == 'C':
+    if option_type == 'P' or option_type == 'PUT':
+        option_type = PUT
+    elif option_type == 'C' or option_type == 'CALL':
         option_type = CALL
     else:
         raise Exception("Couldn\'t parse option type")
@@ -158,7 +166,7 @@ def piker_sym_to_cb_sym(name: str) -> Symbol:
         type=OPTION,
         strike_price=strike_price,
         option_type=option_type,
-        expiry_date=expiry_date
+        expiry_date=new_expiry_date
     )
 
 
@@ -226,16 +234,18 @@ def get_config() -> dict[str, Any]:
         )
 
     conf_option = section.get('option', {})
-    section.clear # clear the dict to reuse it
-    section['deribit'] = {}
-    section['deribit']['key_id'] = conf_option.get('api_key')
-    section['deribit']['key_secret'] = conf_option.get('api_secret')
-
-    section['log'] = {}
-    section['log']['filename'] = 'feedhandler.log'
-    section['log']['level'] = 'DEBUG'
-
-    return section
+    conf_log = conf_option.get('log', {})
+    return {
+        'deribit': {
+            'key_id': conf_option['key_id'],
+            'key_secret': conf_option['key_secret'],
+        },
+        'log': {
+            'filename': conf_log['filename'],
+            'level': conf_log['level'],
+            'disabled': conf_log['disabled'],
+        }
+    }
 
 
 class Client:
@@ -311,6 +321,20 @@ class Client:
 
         return balances
 
+    async def get_currencies(
+        self,
+
+    ) -> list[dict]:
+        '''
+        Return the set of currencies for deribit.
+        '''
+        assets = {}
+        resp = await self._json_rpc_auth_wrapper(
+            'public/get_currencies',
+            params={}
+        )
+        return resp.result
+
     async def get_assets(
         self,
         venue: str | None = None,
@@ -323,11 +347,7 @@ class Client:
 
         '''
         assets = {}
-        resp = await self._json_rpc_auth_wrapper(
-            'public/get_currencies',
-            params={}
-        )
-        currencies: list[dict] = resp.result
+        currencies = await self.get_currencies()
         for currency in currencies:
             name: str = currency['currency']
             tx_tick: Decimal = digits_to_dec(currency['fee_precision'])