Cast all follow name data to string. Should protect against setting non string...

Cast all follow name data to string. Should protect against setting non string data types as names in follower and following

hive/indexer/follow.py

@@ -2,6 +2,7 @@
 
 import logging
 from time import perf_counter as perf
+from json import dumps
 
 from funcy.seqs import first
 from hive.db.adapter import Db
@@ -12,6 +13,7 @@ from hive.indexer.accounts import Accounts
 from hive.indexer.db_adapter_holder import DbAdapterHolder
 from hive.utils.normalize import escape_characters
 
+
 log = logging.getLogger(__name__)
 
 FOLLOWERS = 'followers'
@@ -100,7 +102,20 @@ class Follow(DbAdapterHolder):
             return None
 
         op['following'] = op['following'] if isinstance(op['following'], list) else [op['following']]
+        
+        # additional layer of protection against putting complex data types as user names
+        as_str = []
+        for following in op['following']:
+            if isinstance(following, list) or isinstance(following, dict):
+                as_str.append(dumps(following))
+            else:
+                as_str.append(str(following))
+        op['following'] = as_str
 
+        if isinstance(op['follower'], list) or isinstance(op['follower'], dict):
+            op['follower'] = dumps(op['follower'])
+        else:
+            op['follower'] = str(op['follower'])
 
         # follower/following is empty
         if not op['follower'] or not op['following']:

mock_data/block_data/follow_op/mock_block_data_follow.json

@@ -365,6 +365,72 @@
               "id": "follow",
               "json": "[\"follow\",{\"follower\":\"te'%@ter1\",\"following\":[\"tester3\", \"tester4\"],\"what\":[\"blog\"]}]"
             }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "{\"tester1\":\"tester1\"}"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":{\"tester1\":\"tester1\"},\"following\":{\"tester3\":\"tester4\"},\"what\":[\"blog\"]}]"
+            }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "tester1"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":\"tester1\",\"following\":{\"tester3\":\"tester4\"},\"what\":[\"blog\"]}]"
+            }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "tester1"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":\"tester1\",\"following\":[\"tester3\", [\"tester4\"]],\"what\":[\"blog\"]}]"
+            }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "tester1"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":[\"tester1\"],\"following\":[\"tester3\", [\"tester4\"]],\"what\":[\"blog\"]}]"
+            }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "[\"tester1\"]"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":[\"tester1\"],\"following\":[\"tester3\", {\"tester4\":\"tester5\"}],\"what\":[\"blog\"]}]"
+            }
+          },
+          {
+            "type": "custom_json_operation",
+            "value": {
+              "required_auths": [],
+              "required_posting_auths": [
+                "tester1"
+              ],
+              "id": "follow",
+              "json": "[\"follow\",{\"follower\":\"tester1\",\"following\":[\"tester3\", {\"tester4\":\"tester5\"}],\"what\":[\"blog\"]}]"
+            }
           }
         ]
       }