Added exception for NetworkError, to get specific error from connection class.

planetmint/backend/connection.py

@@ -5,11 +5,13 @@
 
 import logging
 from importlib import import_module
+
+import tarantool
+
 from planetmint.config import Config
 from planetmint.backend.exceptions import ConnectionError
 from planetmint.transactions.common.exceptions import ConfigurationError
 
-
 BACKENDS = {  # This is path to MongoDBClass
     'tarantool_db': 'planetmint.backend.tarantool.connection.TarantoolDB',
     'localmongodb': 'planetmint.backend.localmongodb.connection.LocalMongoDBConnection'
@@ -67,10 +69,14 @@ def Connection(host: str = None, port: int = None, login: str = None, password:
                          replicaset=replicaset, ssl=ssl, login=login, password=password,
                          ca_cert=ca_cert, certfile=certfile, keyfile=keyfile,
                          keyfile_passphrase=keyfile_passphrase, crlfile=crlfile)
+    except tarantool.error.NetworkError as network_err:
+        print(f"Host {host}:{port} can't be reached.\n{network_err}")
+        raise network_err
     except:
         logger.info('Exception in _connect(): {}')
         raise ConfigurationError
 
+
 def _kwargs_parser(key, kwargs):
     if kwargs.get(key):
         return kwargs[key]

planetmint/backend/tarantool/connection.py

@@ -33,6 +33,9 @@ class TarantoolDB:
             self.SPACE_NAMES = ["abci_chains", "assets", "blocks", "blocks_tx",
                                 "elections", "meta_data", "pre_commits", "validators",
                                 "transactions", "inputs", "outputs", "keys"]
+        except tarantool.error.NetworkError as network_err:
+            logger.info('Host cant be reached')
+            raise network_err
         except:
             logger.info('Exception in _connect(): {}')
             raise ConfigurationError