reliability updates

zpool-switch.py

@@ -40,22 +40,30 @@ try:
   exchrate=float(json.loads(fetch("https://api.coinbase.com/v2/exchange-rates?currency=BTC"))["data"]["rates"][currency])
   data=json.loads(fetch("http://www.zpool.ca/api/status"))
 except:
-  print("unable to retrieve remote data", file=sys.stderr)
-  sys.exit(-1)
+  if (len(sys.argv)!=5):
+    print("unable to retrieve remote data", file=sys.stderr)
+    sys.exit(-1)
+  else:
+    pass
 
 # update algo map
 
-changed=False
-for i in data:
-  try:
-    k=algo_map[i]
-  except:
-    algo_map[i]=""
-    changed=True
+try:
+  changed=False
+  for i in data:
+    try:
+      k=algo_map[i]
+    except:
+      algo_map[i]=""
+      changed=True
+
+  if (changed==True):    
+    with open(sys.argv[3], "w") as outfile:
+      json.dump(algo_map, outfile, sort_keys=True, indent=2)
+except:
+  print("null response from server", file=sys.stderr)
+  sys.exit(-1)
   
-if (changed==True):    
-  with open(sys.argv[3], "w") as outfile:
-    json.dump(algo_map, outfile, sort_keys=True, indent=2)
 
 # weed out miners not supported by the pool