From b39affc96e23627577239c2298c42fae16017da2 Mon Sep 17 00:00:00 2001
From: Nelson Torres <nelson.torres.alvarado1@gmail.com>
Date: Fri, 8 Nov 2024 21:42:42 +0000
Subject: [PATCH] created exch_info in api class

---
 piker/brokers/deribit/api.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/piker/brokers/deribit/api.py b/piker/brokers/deribit/api.py
index 6f8f659d..235a49d3 100644
--- a/piker/brokers/deribit/api.py
+++ b/piker/brokers/deribit/api.py
@@ -344,6 +344,28 @@ class Client:
             'private/cancel', {'order_id': oid})
         return resp.result
 
+    async def exch_info(
+        self,
+        sym: str | None = None,
+
+        venue: MarketType | None = None,
+        expiry: str | None = None,
+
+    ) -> dict[str, Pair] | Pair:
+
+        pair_table: dict[str, Pair] = self._pairs
+
+        if (
+            sym
+            and (cached_pair := pair_table.get(sym))
+        ):
+            return cached_pair
+
+        if sym:
+            return pair_table[sym.lower()]
+        else:
+            return self._pairs
+
     async def symbol_info(
         self,
         instrument: Optional[str] = None,