From 9813cf41694f234dde442deb1fe058bf90cabfd0 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Tue, 11 Jan 2022 16:20:26 -0500
Subject: [PATCH] Add a symbol "front feed" helper

---
 piker/data/_source.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/piker/data/_source.py b/piker/data/_source.py
index 8ec92dfd..9b9b323d 100644
--- a/piker/data/_source.py
+++ b/piker/data/_source.py
@@ -106,6 +106,18 @@ class Symbol(BaseModel):
         mult = 1 / self.tick_size
         return round(value * mult) / mult
 
+    def front_feed(self) -> tuple[str, str]:
+        '''
+        Return the "current" feed key for this symbol.
+
+        (i.e. the broker + symbol key in a tuple).
+
+        '''
+        return (
+            list(self.broker_info.keys())[0],
+            self.key,
+        )
+
 
 @validate_arguments
 def mk_symbol(