fix: /default_token

apps/cic-eth/cic_eth/server/cache.py

@@ -14,6 +14,7 @@ logg = logging.getLogger(__file__)
 class Cache:
     store: Redis = None
 
+
 def get_token_data(token_symbol: str):
     """
     :param token_symbol:
@@ -46,19 +47,23 @@ def set_token_data(token_symbol: str, data: dict):
     cache_data(key, json.dumps(data))
     logg.debug(f'Cached token data for: {token_symbol} at: {key}')
 
+
 def get_default_token() -> Optional[str]:
     """This function attempts to retrieve the default token's data from the redis cache.
-    :param chain_str: chain name and network id.
-    :type chain_str: str
     :return:
     :rtype:
     """
-    logg.debug(f'Retrieving default token from cache for chain:')
+    logg.debug(f'Retrieving default token from cache')
+    # TODO: What should the identifier be?
     key = cache_data_key(identifier="ff".encode('utf-8'),
                          salt=MetadataPointer.TOKEN_DEFAULT)
-    token_data = json.loads(get_cached_data(key=key))
-    logg.debug(f'Retrieved default token data: {token_data}')
-    return token_data
+    default_token_str = get_cached_data(key=key)
+    if default_token_str is None:
+        logg.debug(f'No cached default token found: {key}')
+        return None
+    default_token = json.loads(default_token_str)
+    logg.debug(f'Retrieved default token data: {default_token}')
+    return default_token
 
 
 def set_default_token(default_token: dict):
@@ -74,8 +79,6 @@ def set_default_token(default_token: dict):
     cache_data(key, json.dumps(default_token))
 
 
-
-
 def cache_data(key: str, data: str):
     """
     :param key:

apps/cic-eth/cic_eth/server/routes.py

@@ -98,10 +98,10 @@ def handle_tokens(start_response, query: dict) -> List[bytes]:
 
 def handle_default_token(start_response, _query) -> List[bytes]:
     data = cache.get_default_token()
-    if data == None:
+    if data is None:
         data = celery.call('default_token')
-        cache.set_default_token(data)
-        cache.set_token_data(data.get('token_symbol'), data)
+        if data is not None:
+            cache.set_default_token(data)
     return uwsgi.respond(start_response, data)