BLD: completed implementation of issue #60, authentication aliases

catalyst/__main__.py

@@ -285,6 +285,7 @@ def run(ctx,
         analyze_live=None,
         live_graph=False,
         simulate_orders=True,
+        auth_aliases=None,
         stats_output=None,
     )
 
@@ -413,6 +414,15 @@ def catalyst_magic(line, cell=None):
     help='Simulating orders enable the paper trading mode. No orders will be '
          'sent to the exchange unless set to false.',
 )
+@click.option(
+    '--auth-aliases',
+    default=None,
+    help='Authentication file aliases for the specified exchanges. By default,'
+         'each exchange uses the "auth.json" file in the exchange folder. '
+         'Specifying an "auth2" alias would use "auth2.json". It should be '
+         'specified like this: "[exchange_name],[alias],..." For example, '
+         '"binance,auth2" or "binance,auth2,bittrex,auth2".',
+)
 @click.pass_context
 def live(ctx,
          algofile,
@@ -427,6 +437,7 @@ def live(ctx,
          base_currency,
          end,
          live_graph,
+         auth_aliases,
          simulate_orders):
     """Trade live with the given algorithm.
     """
@@ -480,6 +491,7 @@ def live(ctx,
         live_graph=live_graph,
         analyze_live=None,
         simulate_orders=simulate_orders,
+        auth_aliases=auth_aliases,
         stats_output=None,
     )
 

catalyst/utils/run_algo.py

@@ -8,6 +8,8 @@ from time import sleep
 
 import click
 import pandas as pd
+from six import string_types
+
 from catalyst.data.bundles import load
 from catalyst.data.data_portal import DataPortal
 from catalyst.exchange.exchange_pricing_loader import ExchangePricingLoader, \
@@ -97,6 +99,7 @@ def _run(handle_data,
 
     This is shared between the cli and :func:`catalyst.run_algo`.
     """
+    # TODO: refactor for more granularity
     if algotext is not None:
         if local_namespace:
             ip = get_ipython()  # noqa
@@ -163,6 +166,17 @@ def _run(handle_data,
     if exchange_name is None:
         raise ValueError('Please specify at least one exchange.')
 
+    if isinstance(auth_aliases, string_types):
+        aliases = auth_aliases.split(',')
+        if len(aliases) < 2 or len(aliases) % 2 != 0:
+            raise ValueError(
+                'the `auth_aliases` parameter must contain an even list '
+                'of comma-delimited values. For example, '
+                '"binance,auth2" or "binance,auth2,bittrex,auth2".'
+            )
+
+        auth_aliases = dict(zip(aliases[::2], aliases[1::2]))
+
     exchange_list = [x.strip().lower() for x in exchange.split(',')]
     exchanges = dict()
     for name in exchange_list: