use lbryio api for price data instead of bittrex

CHANGELOG.md

@@ -19,6 +19,8 @@ at anytime.
 ### Changed
   * Use `uri` instead of `name` for `get`, remove explicit `claim_id` parameter
   * Increase default download timeout
+  * Use lbry.io api for exchange rate data
+  *
 
 ### Fixed
   * 

lbrynet/conf.py

@@ -153,7 +153,6 @@ ADJUSTABLE_SETTINGS = {
     'api_host': (str, 'localhost'),
 
     'api_port': (int, 5279),
-    'bittrex_feed': (str, 'https://bittrex.com/api/v1.1/public/getmarkethistory'),
     'cache_time': (int, 150),
     'check_ui_requirements': (bool, True),
     'data_dir': (str, default_data_dir),

lbrynet/lbrynet_daemon/ExchangeRateManager.py

@@ -111,6 +111,24 @@ class BittrexFeed(MarketFeed):
         return defer.succeed(float(1.0 / vwap))
 
 
+class LBRYioFeed(MarketFeed):
+    def __init__(self):
+        MarketFeed.__init__(
+            self,
+            "BTCLBC",
+            "lbry.io",
+            "https://api.lbry.io/lbc/exchange_rate",
+            {},
+            0.0,
+        )
+
+    def _handle_response(self, response):
+        json_response = json.loads(response)
+        if 'data' not in json_response:
+            raise InvalidExchangeRateResponse(self.name, 'result not found')
+        return defer.succeed(1.0 / json_response['data']['lbc_btc'])
+
+
 class GoogleBTCFeed(MarketFeed):
     def __init__(self):
         MarketFeed.__init__(
@@ -144,7 +162,7 @@ def get_default_market_feed(currency_pair):
     if currencies == ("USD", "BTC"):
         return GoogleBTCFeed()
     elif currencies == ("BTC", "LBC"):
-        return BittrexFeed()
+        return LBRYioFeed()
 
 
 class ExchangeRateManager(object):

tests/unit/core/test_Wallet.py

@@ -44,10 +44,11 @@ class WalletTest(unittest.TestCase):
         def not_enough_funds_send_name_claim(self, name, val, amount):
             claim_out = {'success':False, 'reason':'Not enough funds'}
             return claim_out
+
         MocLbryumWallet._send_name_claim = not_enough_funds_send_name_claim
         wallet = MocLbryumWallet()
         d = wallet.claim_name('test', 1, test_claim_dict)
-        self.assertFailure(d,Exception)
+        self.assertFailure(d, Exception)
         return d
 
     def test_successful_send_name_claim(self):

tests/unit/lbrynet_daemon/test_ExchangeRateManager.py

@@ -54,22 +54,14 @@ class GoogleBTCFeedTest(unittest.TestCase):
             out = yield feed._handle_response(response)
 
 
-
-
-class BittrexFeedTest(unittest.TestCase):
-    def setUp(self):
-        conf.initialize_settings()
-
-    def tearDown(self):
-        conf.settings = None
-
+class LBRYioFeedTest(unittest.TestCase):
     @defer.inlineCallbacks
     def test_handle_response(self):
-        feed = ExchangeRateManager.BittrexFeed()
+        feed = ExchangeRateManager.LBRYioFeed()
 
-        response ='{"success":true,"message":"","result":[{"Id":6902471,"TimeStamp":"2017-02-27T23:41:52.213","Quantity":56.12611239,"Price":0.00001621,"Total":0.00090980,"FillType":"PARTIAL_FILL","OrderType":"SELL"},{"Id":6902403,"TimeStamp":"2017-02-27T23:31:40.463","Quantity":430.99988180,"Price":0.00001592,"Total":0.00686151,"FillType":"PARTIAL_FILL","OrderType":"SELL"}]}'
+        response ='{\"data\": {\"fresh\": 0, \"lbc_usd\": 0.05863062523378918, \"lbc_btc\": 5.065289549855739e-05, \"btc_usd\": 1157.498}, \"success\": true, \"error\": null}'
         out = yield feed._handle_response(response)
-        expected= 1.0 / ((0.00090980+0.00686151) / (56.12611239+430.99988180))
+        expected = 1.0 / 5.065289549855739e-05
         self.assertEqual(expected, out)
 
         response='{}'