Clearer error handling on read_keys().

btc_tracker/kraken_fetch.py

@@ -11,6 +11,7 @@ import math
 import json
 import os
 import time
+import sys
 import sqlite3
 import binascii
 import threading
@@ -54,6 +55,11 @@ def read_keys():
     Reads the declared KEYSFILE and returns "user_publickeys" from it.
     Returns: json object
     """
+    empty_userkeys = {
+        "user_publickeys": {
+            "user_name": "user_ecdsa_public key"
+            }
+        }
     # test if the file is there, we could make one if there is non
     try:
         # ascii is subset of UTF-8, this should be quite safe...
@@ -61,20 +67,18 @@ def read_keys():
             user_keys = json.load(cfile)
 
             if 'user_publickeys' not in user_keys:
-                raise ValueError('Missing required property "user_publickeys" in config file')
+                print('Missing required property "user_publickeys" in config file')
+                sys.exit(1)
+            if user_keys == empty_userkeys:
+                print('Your userkeys.json file seems to not filled. Please insert your key there.')
+                sys.exit(1)
 
             return user_keys["user_publickeys"]
     except FileNotFoundError:
-        empty_userkeys = {
-                "user_publickeys": {
-                    "user_name": "user_ecdsa_public key"
-                    }
-                }
         with open(KEYSFILE, "w", encoding='utf-8') as nfile:
             print('You seem be lacking the users key file, created example for you. Exiting')
             json.dump(empty_userkeys, nfile, indent=2)
-            raise FileNotFoundError
+        sys.exit(1)
-        return {}
 
 def check_database():
     """
@@ -421,11 +425,7 @@ if __name__ == "__main__":
     database_lock = threading.Lock()
 
     # Get the users public keys
-    try:
+    user_publickeys = read_keys()
-        user_publickeys = read_keys()
-    except FileNotFoundError:
-        exit(1)
-
 
     # Start the data fetching backend process§
     fetch_thread = threading.Thread(target=get_the_data)

btc_tracker/userkeys.json

@@ -1,5 +1,5 @@
 {
   "user_publickeys": {
-    "user_name": "user_ecdsa_public key"
+    "user1": "f1debc13fb21fe0eee54525aa4f8aae5733b201c755edaa55f8893c90aa375b261a62eaa3110651ac5d7705d402581256a37508b0a1ca28bd919ea44710d9c88"
   }
-}
+}

btc_tracker/userkeys.json_bak

@@ -1,5 +0,0 @@
-{
-  "user_publickeys": {
-    "user1": "f1debc13fb21fe0eee54525aa4f8aae5733b201c755edaa55f8893c90aa375b261a62eaa3110651ac5d7705d402581256a37508b0a1ca28bd919ea44710d9c88"
-  }
-}