Moves tx_in_chain to Carrier

Also integrates it properly so it uses self.get_transaction() instead of bitcoin_cli straightaway. Error messages have also been merged / modified

pisa/tools.py

@@ -2,8 +2,6 @@ import re
 from http.client import HTTPException
 
 import pisa.conf as conf
-from pisa.logger import Logger
-from pisa.rpc_errors import RPC_INVALID_ADDRESS_OR_KEY
 from pisa.utils.auth_proxy import AuthServiceProxy, JSONRPCException
 
 
@@ -14,34 +12,6 @@ def bitcoin_cli():
     )
 
 
-# TODO: currently only used in the Responder; might move there or in the BlockProcessor
-# NOTCOVERED
-def check_tx_in_chain(tx_id, logger=Logger(), tx_label="Transaction"):
-    tx_in_chain = False
-    confirmations = 0
-
-    try:
-        tx_info = bitcoin_cli().getrawtransaction(tx_id, 1)
-
-        if tx_info.get("confirmations"):
-            confirmations = int(tx_info.get("confirmations"))
-            tx_in_chain = True
-            logger.error("{} found in the blockchain".format(tx_label), txid=tx_id)
-
-        else:
-            logger.error("{} found in mempool".format(tx_label), txid=tx_id)
-
-    except JSONRPCException as e:
-        if e.error.get("code") == RPC_INVALID_ADDRESS_OR_KEY:
-            logger.error("{} not found in mempool nor blockchain".format(tx_label), txid=tx_id)
-
-        else:
-            # ToDO: Unhandled errors, check this properly
-            logger.error("JSONRPCException.", method="tools.check_tx_in_chain", error=e.error)
-
-    return tx_in_chain, confirmations
-
-
 # NOTCOVERED
 def can_connect_to_bitcoind():
     can_connect = True