Merge branch 'planetmint-tarantool' into connection_singleton

Signed-off-by: Jürgen Eckel <juergen@riddleandcode.com>

acceptance/python/src/conftest.py

@@ -81,6 +81,7 @@ def zenroom_script_input():
     return SCRIPT_INPUT
 
 
+
 @pytest.fixture
 def zenroom_data():
     return ZENROOM_DATA

acceptance/python/src/test_zenroom.py

@@ -38,6 +38,26 @@ def test_zenroom_signing(
     zenroomscpt = ZenroomSha256(script=fulfill_script_zencode, data=zenroom_data, keys=zen_public_keys)
     print(f"zenroom is: {zenroomscpt.script}")
 
+def test_zenroom_signing(gen_key_zencode, secret_key_to_private_key_zencode,
+                         fulfill_script_zencode, zenroom_data, zenroom_house_assets,
+                         condition_script_zencode):
+
+    biolabs = generate_keypair()
+    version = '2.0'
+
+    alice = json.loads(zencode_exec(gen_key_zencode).output)['keyring']
+    bob = json.loads(zencode_exec(gen_key_zencode).output)['keyring']
+
+    zen_public_keys = json.loads(zencode_exec(secret_key_to_private_key_zencode.format('Alice'),
+                                                keys=json.dumps({'keyring': alice})).output)
+    zen_public_keys.update(json.loads(zencode_exec(secret_key_to_private_key_zencode.format('Bob'),
+                                                keys=json.dumps({'keyring': bob})).output))
+
+
+
+    zenroomscpt = ZenroomSha256(script=fulfill_script_zencode, data=zenroom_data, keys=zen_public_keys)
+    print(F'zenroom is: {zenroomscpt.script}')
+    
     # CRYPTO-CONDITIONS: generate the condition uri
     condition_uri_zen = zenroomscpt.condition.serialize_uri()
     print(f"\nzenroom condition URI: {condition_uri_zen}")
@@ -73,6 +93,11 @@ def test_zenroom_signing(
         "output": ["ok"],
         "policies": {},
     }
+    metadata = {
+        "result": {
+            "output": ["ok"]
+        }
+    }
     
     token_creation_tx = {
         "operation": "CREATE",

docs/root/source/basic-usage.md

@@ -151,6 +151,7 @@ and
 
 Planetmint has been developed with simple logical gateways in mind. The logic got introduced by [cryptoconditions](https://https://docs.planetmint.io/projects/cryptoconditions). The cryptocondition documentation contains all details about how conditoins are defined and how they can be verified and fulfilled. 
 
+<<<<<<< HEAD
 The integration of such into the transaction schema of Planetmint is shown below.
 
 ## Zenroom Smart Contracts and Policies
@@ -159,3 +160,6 @@ The integration of such into the transaction schema of Planetmint is shown below
 At the moment these contracts can only be stateless, which implies that the conditions and fulfillments need to be transacted in the same transaction. However, [PRP-10](https://github.com/planetmint/PRPs/tree/main/10) aims to make stateful contracts possible, which enables asynchronous and party-independent processing of contracts.
 
 As for network-wide or asset-based policies [PRP-11](https://github.com/planetmint/PRPs/tree/main/11) specifies how these can be implemented and how these can be used to verify a transaction state before it is commited to the network.
+=======
+The integration of such into the transaction schema of Planetmint is shown below.
+>>>>>>> planetmint-tarantool

docs/root/source/connecting/http-samples/api-index-response.http

@@ -4,7 +4,7 @@ Content-Type: application/json
 {
   "assets": "/assets/",
   "blocks": "/blocks/",
-  "docs": "https://docs.planetmint.io/projects/server/en/v1.0.1/http-client-server-api.html",
+  "docs": "https://docs.planetmint.io/projects/server/en/v1.2.2/http-client-server-api.html",
   "metadata": "/metadata/",
   "outputs": "/outputs/",
   "streamedblocks": "ws://localhost:9985/api/v1/streams/valid_blocks",

docs/root/source/connecting/http-samples/get-block-response.http

@@ -6,23 +6,19 @@ Content-Type: application/json
   "transactions": [
     {
       "asset": {
-        "data": {
+        "data": "QmQP5C3PmhH9oB84n7YqSY4WVqmYatdoo1BdwhH4zmcwqM"
-          "msg": "Hello Planetmint!"
-        }
       },
-      "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2",
+      "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a",
       "inputs": [
         {
-          "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUBcdRj6EnG3MPl47m3XPd1HNfe7q3WL4T6MewNNnat33UvzVnPHo_vossv57M7L064VwrYMLGp097H7IeHpDngK",
+          "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUDVDqtaQTYon0UJ-k2YEGfKfDWAwz9BnfBPkKvSHAgfU5O-1S8eY4mNjHAQConK47tnE7ksezmOrLL0_DR1Mm0P",
           "fulfills": null,
           "owners_before": [
             "4K9sWUMFwTgaDGPfdynrbxWqWS6sWmKbZoTjxLtVUibD"
           ]
         }
       ],
-      "metadata": {
+      "metadata": "QmZs4UHLHCUGLQr6rzbtJTjT8Sf5pw6FNuaRZ5pzguk5FV",
-        "sequence": 0
-      },
       "operation": "CREATE",
       "outputs": [
         {

docs/root/source/connecting/http-samples/get-block-txid-request.http

@@ -1,3 +1,3 @@
-GET /api/v1/blocks?transaction_id=6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2 HTTP/1.1
+GET /api/v1/blocks?transaction_id=e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a HTTP/1.1
 Host: example.com
 

docs/root/source/connecting/http-samples/get-tx-by-asset-request.http

@@ -1,3 +1,3 @@
-GET /api/v1/transactions?operation=TRANSFER&asset_id=6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2 HTTP/1.1
+GET /api/v1/transactions?operation=TRANSFER&asset_id=e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a HTTP/1.1
 Host: example.com
 

docs/root/source/connecting/http-samples/get-tx-by-asset-response.http

@@ -3,24 +3,22 @@ Content-Type: application/json
 
 [{
   "asset": {
-    "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2"
+    "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a"
   },
-  "id": "2bf8ae1e3bc889a26df129dd6bbe6ccab30d1ae8e9e434fae1c4446042a68931",
+  "id": "b3f39407b3907587de26bedec93cd6b2c6958bca90f77349f1db9780f014bc1f",
   "inputs": [
     {
-      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUA90mMa9AWnbI70CUSVgzV9kRFf3tQ20RUIczNFqmwg9xrpOk_5uNoJB4bWRIojZmUhEyxSueCHLpqPXCEuyisE",
+      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUCtt9Thk_enrynxclNFj8B76QvIFbvhyj_38wuy1vA-lncUb2Q7bwJvnmmufeXucyEBTZQ0xoI5dfjG3KeTsLkH",
       "fulfills": {
         "output_index": 0,
-        "transaction_id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2"
+        "transaction_id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a"
       },
       "owners_before": [
         "4K9sWUMFwTgaDGPfdynrbxWqWS6sWmKbZoTjxLtVUibD"
       ]
     }
   ],
-  "metadata": {
+  "metadata": "QmQ9Sc3VWZ3nH5FWVVi2MNMDhyjTiKrEb6mN79qqt1Uq9s",
-    "sequence": 1
-  },
   "operation": "TRANSFER",
   "outputs": [
     {
@@ -41,24 +39,22 @@ Content-Type: application/json
 },
 {
   "asset": {
-    "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2"
+    "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a"
   },
-  "id": "b9b614175eaed7cc93d9b80ebc2a91d35ae31928a7c218ae982272bb1785ef16",
+  "id": "95d99c245cd83af10f3c8ba6c32eda7cb668698b5aaaeec67be3faf915bb6b5d",
   "inputs": [
     {
-      "fulfillment": "pGSAICw7Ul-c2lG6NFbHp3FbKRC7fivQcNGO7GS4wV3A-1QggUDi2bAVKJgEyE3LzMrAnAu1PnNs9DbDNkABaY6j3OCNEVwNVNg3V3qELOFNnH8vGUevREr4E-8Vb1Kzk4VR71MO",
+      "fulfillment": "pGSAICw7Ul-c2lG6NFbHp3FbKRC7fivQcNGO7GS4wV3A-1QggUA2Z5Iw7YlMO0K9H_qcfGyepj6rqODxUZSysK_QS_tiZSlSdkXzCSLRCDO07EsyeBKEUUXpWHoBUv1lqJhFtjUK",
       "fulfills": {
         "output_index": 0,
-        "transaction_id": "2bf8ae1e3bc889a26df129dd6bbe6ccab30d1ae8e9e434fae1c4446042a68931"
+        "transaction_id": "b3f39407b3907587de26bedec93cd6b2c6958bca90f77349f1db9780f014bc1f"
       },
       "owners_before": [
         "3yfQPHeWAa1MxTX9Zf9176QqcpcnWcanVZZbaHb8B3h9"
       ]
     }
   ],
-  "metadata": {
+  "metadata": "QmRRg9RGq3TmV6nj2SXJacPuTdwaFDGTPACJLdN368pN3t",
-    "sequence": 2
-  },
   "operation": "TRANSFER",
   "outputs": [
     {

docs/root/source/connecting/http-samples/get-tx-id-request.http

@@ -1,3 +1,3 @@
-GET /api/v1/transactions/6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2 HTTP/1.1
+GET /api/v1/transactions/e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a HTTP/1.1
 Host: example.com
 

docs/root/source/connecting/http-samples/get-tx-id-response.http

@@ -3,23 +3,19 @@ Content-Type: application/json
 
 {
   "asset": {
-    "data": {
+    "data": "QmQP5C3PmhH9oB84n7YqSY4WVqmYatdoo1BdwhH4zmcwqM"
-      "msg": "Hello Planetmint!"
-    }
   },
-  "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2",
+  "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a",
   "inputs": [
     {
-      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUBcdRj6EnG3MPl47m3XPd1HNfe7q3WL4T6MewNNnat33UvzVnPHo_vossv57M7L064VwrYMLGp097H7IeHpDngK",
+      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUDVDqtaQTYon0UJ-k2YEGfKfDWAwz9BnfBPkKvSHAgfU5O-1S8eY4mNjHAQConK47tnE7ksezmOrLL0_DR1Mm0P",
       "fulfills": null,
       "owners_before": [
         "4K9sWUMFwTgaDGPfdynrbxWqWS6sWmKbZoTjxLtVUibD"
       ]
     }
   ],
-  "metadata": {
+  "metadata": "QmZs4UHLHCUGLQr6rzbtJTjT8Sf5pw6FNuaRZ5pzguk5FV",
-    "sequence": 0
-  },
   "operation": "CREATE",
   "outputs": [
     {

docs/root/source/connecting/http-samples/index-response.http

@@ -6,7 +6,7 @@ Content-Type: application/json
     "v1": {
       "assets": "/api/v1/assets/",
       "blocks": "/api/v1/blocks/",
-      "docs": "https://docs.planetmint.io/projects/server/en/v1.0.1/http-client-server-api.html",
+      "docs": "https://docs.planetmint.io/projects/server/en/v1.2.2/http-client-server-api.html",
       "metadata": "/api/v1/metadata/",
       "outputs": "/api/v1/outputs/",
       "streamedblocks": "ws://localhost:9985/api/v1/streams/valid_blocks",
@@ -15,7 +15,7 @@ Content-Type: application/json
       "validators": "/api/v1/validators"
     }
   },
-  "docs": "https://docs.planetmint.io/projects/server/en/v1.0.1/",
+  "docs": "https://docs.planetmint.io/projects/server/en/v1.2.2/",
   "software": "Planetmint",
-  "version": "1.0.1"
+  "version": "1.2.2"
 }

docs/root/source/connecting/http-samples/post-tx-request.http

@@ -4,23 +4,19 @@ Content-Type: application/json
 
 {
   "asset": {
-    "data": {
+    "data": "QmQP5C3PmhH9oB84n7YqSY4WVqmYatdoo1BdwhH4zmcwqM"
-      "msg": "Hello Planetmint!"
-    }
   },
-  "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2",
+  "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a",
   "inputs": [
     {
-      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUBcdRj6EnG3MPl47m3XPd1HNfe7q3WL4T6MewNNnat33UvzVnPHo_vossv57M7L064VwrYMLGp097H7IeHpDngK",
+      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUDVDqtaQTYon0UJ-k2YEGfKfDWAwz9BnfBPkKvSHAgfU5O-1S8eY4mNjHAQConK47tnE7ksezmOrLL0_DR1Mm0P",
       "fulfills": null,
       "owners_before": [
         "4K9sWUMFwTgaDGPfdynrbxWqWS6sWmKbZoTjxLtVUibD"
       ]
     }
   ],
-  "metadata": {
+  "metadata": "QmZs4UHLHCUGLQr6rzbtJTjT8Sf5pw6FNuaRZ5pzguk5FV",
-    "sequence": 0
-  },
   "operation": "CREATE",
   "outputs": [
     {

docs/root/source/connecting/http-samples/post-tx-response.http

@@ -3,23 +3,19 @@ Content-Type: application/json
 
 {
   "asset": {
-    "data": {
+    "data": "QmQP5C3PmhH9oB84n7YqSY4WVqmYatdoo1BdwhH4zmcwqM"
-      "msg": "Hello Planetmint!"
-    }
   },
-  "id": "6438c733f53dff60bdeded80e8c95126dd3a7ce8c1ee5d5591d030e61cde35d2",
+  "id": "e4ebc02324e10925226bf2143363c1a28481ee38f70a9245a5a76df5f4380a7a",
   "inputs": [
     {
-      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUBcdRj6EnG3MPl47m3XPd1HNfe7q3WL4T6MewNNnat33UvzVnPHo_vossv57M7L064VwrYMLGp097H7IeHpDngK",
+      "fulfillment": "pGSAIDE5i63cn4X8T8N1sZ2mGkJD5lNRnBM4PZgI_zvzbr-cgUDVDqtaQTYon0UJ-k2YEGfKfDWAwz9BnfBPkKvSHAgfU5O-1S8eY4mNjHAQConK47tnE7ksezmOrLL0_DR1Mm0P",
       "fulfills": null,
       "owners_before": [
         "4K9sWUMFwTgaDGPfdynrbxWqWS6sWmKbZoTjxLtVUibD"
       ]
     }
   ],
-  "metadata": {
+  "metadata": "QmZs4UHLHCUGLQr6rzbtJTjT8Sf5pw6FNuaRZ5pzguk5FV",
-    "sequence": 0
-  },
   "operation": "CREATE",
   "outputs": [
     {

docs/root/source/introduction/quickstart.md

@@ -43,7 +43,11 @@ $ python notarize.py
 # Install Planetmint
 ## Local Node
 Planemtint is a Tendermint applicatoin with an attached database.
+<<<<<<< HEAD
 A basic installation installs the database, Tendermint and therafter Planetmint.
+=======
+A basic installation installs the database, Tenermint and therafter Planetmint.
+>>>>>>> planetmint-tarantool
 
 Planetmint currently supports Tarantool and MongoDB database. The installation is as follows:
 ```

integration/python/src/test_zenroom.py

@@ -3,7 +3,6 @@ import base58
 from hashlib import sha3_256
 from cryptoconditions.types.zenroom import ZenroomSha256
 from planetmint_driver.crypto import generate_keypair
-
 from .helper.hosts import Hosts
 from zenroom import zencode_exec
 import time
@@ -72,7 +71,7 @@ def test_zenroom_signing(
         "output": ["ok"],
         "policies": {},
     }
-
+    metadata = {"result": {"output": ["ok"]}}
     token_creation_tx = {
         "operation": "CREATE",
         "asset": {"data": {"test": "my asset"}},

planetmint/backend/__init__.py

@@ -13,4 +13,4 @@ configuration or the ``PLANETMINT_DATABASE_BACKEND`` environment variable.
 
 # Include the backend interfaces
 from planetmint.backend import schema, query, convert  # noqa
-from planetmint.backend.connection import connect, Connection
+from planetmint.backend.connection import Connection

planetmint/backend/connection.py

@@ -20,93 +20,43 @@ BACKENDS = {
 
 logger = logging.getLogger(__name__)
 
+def _kwargs_parser(key, kwargs):
+    if kwargs.get(key):
+        return kwargs[key]
+    return None
 
-def connect(
+class DBSingleton(type):
-    host: str = None, port: int = None, login: str = None, password: str = None, backend: str = None, **kwargs
+    _instances = {}
-):
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
             try:
-        backend = backend
+                backend = kwargs.get("backend") if kwargs and kwargs.get("backend") else None
-        if not backend and kwargs and kwargs.get("backend"):
+                if backend is not None and backend != Config().get()["database"]["backend"]:
-            backend = kwargs["backend"]
-
-        if backend and backend != Config().get()["database"]["backend"]:
                     Config().init_config(backend)
                 else:
                     backend = Config().get()["database"]["backend"]
             except KeyError:
                 logger.info("Backend {} not supported".format(backend))
                 raise ConfigurationError
-
+            modulepath, _, class_name = BACKENDS[backend].rpartition('.')
-    host = host or Config().get()["database"]["host"] if not kwargs.get("host") else kwargs["host"]
-    port = port or Config().get()["database"]["port"] if not kwargs.get("port") else kwargs["port"]
-    login = login or Config().get()["database"]["login"] if not kwargs.get("login") else kwargs["login"]
-    password = password or Config().get()["database"]["password"]
-    try:
-        if backend == "tarantool_db":
-            modulepath, _, class_name = BACKENDS[backend].rpartition(".")
             Class = getattr(import_module(modulepath), class_name)
-            return Class(host=host, port=port, user=login, password=password, kwargs=kwargs)
+            cls._instances[cls] = super(DBSingleton, Class).__call__(*args, **kwargs)
-        elif backend == "localmongodb":
+        return cls._instances[cls]
-            modulepath, _, class_name = BACKENDS[backend].rpartition(".")
-            Class = getattr(import_module(modulepath), class_name)
-            dbname = _kwargs_parser(key="name", kwargs=kwargs) or Config().get()["database"]["name"]
-            replicaset = _kwargs_parser(key="replicaset", kwargs=kwargs) or Config().get()["database"]["replicaset"]
-            ssl = _kwargs_parser(key="ssl", kwargs=kwargs) or Config().get()["database"]["ssl"]
-            login = (
-                login or Config().get()["database"]["login"]
-                if _kwargs_parser(key="login", kwargs=kwargs) is None
-                else _kwargs_parser(key="login", kwargs=kwargs)  # noqa: E501
-            )
-            password = (
-                password or Config().get()["database"]["password"]
-                if _kwargs_parser(key="password", kwargs=kwargs) is None
-                else _kwargs_parser(key="password", kwargs=kwargs)  # noqa: E501
-            )
-            ca_cert = _kwargs_parser(key="ca_cert", kwargs=kwargs) or Config().get()["database"]["ca_cert"]
-            certfile = _kwargs_parser(key="certfile", kwargs=kwargs) or Config().get()["database"]["certfile"]
-            keyfile = _kwargs_parser(key="keyfile", kwargs=kwargs) or Config().get()["database"]["keyfile"]
-            keyfile_passphrase = (
-                _kwargs_parser(key="keyfile_passphrase", kwargs=kwargs)
-                or Config().get()["database"]["keyfile_passphrase"]
-            )
-            crlfile = _kwargs_parser(key="crlfile", kwargs=kwargs) or Config().get()["database"]["crlfile"]
-            max_tries = _kwargs_parser(key="max_tries", kwargs=kwargs)
-            connection_timeout = _kwargs_parser(key="connection_timeout", kwargs=kwargs)
 
-            return Class(
+class Connection(metaclass=DBSingleton):
-                host=host,
-                port=port,
-                dbname=dbname,
-                max_tries=max_tries,
-                connection_timeout=connection_timeout,
-                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
 
+    def __init__(self) -> None:
+        pass
 
-def _kwargs_parser(key, kwargs):
+class DBConnection(metaclass=DBSingleton):
-    if kwargs.get(key):
-        return kwargs[key]
-    return None
-
-
-class Connection:
     """Connection class interface.
     All backend implementations should provide a connection class that inherits
     from and implements this class.
     """
 
-    def __init__(self, host=None, port=None, dbname=None, connection_timeout=None, max_tries=None, **kwargs):
+    def __init__(self, host: str =None, port: int = None, login: str = None, password: str = None, backend: str = None,
+                 connection_timeout: int = None, max_tries: int = None, **kwargs):
         """Create a new :class:`~.Connection` instance.
         Args:
             host (str): the host to connect to.
@@ -120,24 +70,16 @@ class Connection:
             **kwargs: arbitrary keyword arguments provided by the
                 configuration's ``database`` settings
         """
+        dbconf = Config().get()['database']
 
-        dbconf = Config().get()["database"]
+        self.host = host or dbconf["host"] if not kwargs.get("host") else kwargs["host"]
+        self.port = port or dbconf['port'] if not kwargs.get("port") else kwargs["port"]
+        self.login = login or dbconf['login'] if not kwargs.get("login") else kwargs["login"]
+        self.password = password or dbconf['password'] if not kwargs.get("password") else kwargs["password"]
 
-        self.host = host or dbconf["host"]
+        self.connection_timeout = connection_timeout if connection_timeout is not None else Config().get()["database"]
-        self.port = port or dbconf["port"]
+        self.max_tries = max_tries if max_tries is not None else dbconf['max_tries']
-        self.dbname = dbname or dbconf["name"]
-        self.connection_timeout = (
-            connection_timeout if connection_timeout is not None else dbconf["connection_timeout"]
-        )
-        self.max_tries = max_tries if max_tries is not None else dbconf["max_tries"]
         self.max_tries_counter = range(self.max_tries) if self.max_tries != 0 else repeat(0)
-        self._conn = None
-
-    @property
-    def conn(self):
-        if self._conn is None:
-            self.connect()
-        return self._conn
 
     def run(self, query):
         """Run a query.
@@ -160,23 +102,12 @@ class Connection:
             :exc:`~ConnectionError`: If the connection to the database
                 fails.
         """
+        raise NotImplementedError()
 
-        attempt = 0
+    def close(self):
-        for i in self.max_tries_counter:
+        """Try to close connection to the database.
-            attempt += 1
+        Raises:
-            try:
+            :exc:`~ConnectionError`: If the connection to the database
-                self._conn = self._connect()
+                fails.
-            except ConnectionError as exc:
+        """
-                logger.warning(
+        raise NotImplementedError()
-                    "Attempt %s/%s. Connection to %s:%s failed after %sms.",
-                    attempt,
-                    self.max_tries if self.max_tries != 0 else "∞",
-                    self.host,
-                    self.port,
-                    self.connection_timeout,
-                )
-                if attempt == self.max_tries:
-                    logger.critical("Cannot connect to the Database. Giving up.")
-                    raise ConnectionError() from exc
-            else:
-                break

planetmint/backend/localmongodb/connection.py

@@ -8,28 +8,18 @@ from ssl import CERT_REQUIRED
 import pymongo
 
 from planetmint.config import Config
-from planetmint.backend.exceptions import DuplicateKeyError, OperationError, ConnectionError
+from planetmint.backend.exceptions import (DuplicateKeyError,
+                                           OperationError,
+                                           ConnectionError)
 from planetmint.transactions.common.exceptions import ConfigurationError
 from planetmint.utils import Lazy
-from planetmint.backend.connection import Connection
+from planetmint.backend.connection import DBConnection, _kwargs_parser
 
 logger = logging.getLogger(__name__)
 
+class LocalMongoDBConnection(DBConnection):
 
-class LocalMongoDBConnection(Connection):
+    def __init__(self, host: str =None, port: int = None, login: str = None, password: str = None, **kwargs):
-    def __init__(
-        self,
-        replicaset=None,
-        ssl=None,
-        login=None,
-        password=None,
-        ca_cert=None,
-        certfile=None,
-        keyfile=None,
-        keyfile_passphrase=None,
-        crlfile=None,
-        **kwargs,
-    ):
         """Create a new Connection instance.
 
         Args:
@@ -39,16 +29,24 @@ class LocalMongoDBConnection(Connection):
                 configuration's ``database`` settings
         """
 
-        super().__init__(**kwargs)
+        super().__init__(host=host, port=port, login=login, password=password, **kwargs)
-        self.replicaset = replicaset or Config().get()["database"]["replicaset"]
+
-        self.ssl = ssl if ssl is not None else Config().get()["database"]["ssl"]
+        dbconf = Config().get()['database']
-        self.login = login or Config().get()["database"]["login"]
+        self.dbname = _kwargs_parser(key="name", kwargs=kwargs) or dbconf['name']
-        self.password = password or Config().get()["database"]["password"]
+        self.replicaset = _kwargs_parser(key="replicaset", kwargs=kwargs) or dbconf['replicaset']
-        self.ca_cert = ca_cert or Config().get()["database"]["ca_cert"]
+        self.ssl = _kwargs_parser(key="ssl", kwargs=kwargs) or dbconf['ssl']
-        self.certfile = certfile or Config().get()["database"]["certfile"]
+        
-        self.keyfile = keyfile or Config().get()["database"]["keyfile"]
+        self.ca_cert = _kwargs_parser(key="ca_cert", kwargs=kwargs) or dbconf['ca_cert']
-        self.keyfile_passphrase = keyfile_passphrase or Config().get()["database"]["keyfile_passphrase"]
+        self.certfile = _kwargs_parser(key="certfile", kwargs=kwargs) or dbconf['certfile']
-        self.crlfile = crlfile or Config().get()["database"]["crlfile"]
+        self.keyfile = _kwargs_parser(key="keyfile", kwargs=kwargs) or dbconf['keyfile']
+        self.keyfile_passphrase = _kwargs_parser(key="keyfile_passphrase", kwargs=kwargs) or dbconf[
+            'keyfile_passphrase']
+        self.crlfile = _kwargs_parser(key="crlfile", kwargs=kwargs) or dbconf['crlfile']
+        self.max_tries = _kwargs_parser(key="max_tries", kwargs=kwargs)
+        self.connection_timeout = _kwargs_parser(key="connection_timeout", kwargs=kwargs)
+        self.__conn = None
+        self.connect()
+
         if not self.ssl:
             self.ssl = False
         if not self.keyfile_passphrase:
@@ -56,7 +54,7 @@ class LocalMongoDBConnection(Connection):
 
     @property
     def db(self):
-        return self.conn[self.dbname]
+        return self.connect()[self.dbname]
 
     def query(self):
         return Lazy()
@@ -72,10 +70,11 @@ class LocalMongoDBConnection(Connection):
     def run(self, query):
         try:
             try:
-                return query.run(self.conn)
+                return query.run(self.connect())
             except pymongo.errors.AutoReconnect:
-                logger.warning("Lost connection to the database, " "retrying query.")
+                logger.warning('Lost connection to the database, '
-                return query.run(self.conn)
+                               'retrying query.')
+                return query.run(self.connect())
         except pymongo.errors.AutoReconnect as exc:
             raise ConnectionError from exc
         except pymongo.errors.DuplicateKeyError as exc:
@@ -84,7 +83,7 @@ class LocalMongoDBConnection(Connection):
             print(f"DETAILS: {exc.details}")
             raise OperationError from exc
 
-    def _connect(self):
+    def connect(self):
         """Try to connect to the database.
 
         Raises:
@@ -95,7 +94,8 @@ class LocalMongoDBConnection(Connection):
             :exc:`~ConfigurationError`: If there is a ConfigurationError while
                 connecting to the database.
         """
-
+        if self.__conn:
+            return self._conn
         try:
             # FYI: the connection process might raise a
             # `ServerSelectionTimeoutError`, that is a subclass of
@@ -130,16 +130,25 @@ class LocalMongoDBConnection(Connection):
                     **MONGO_OPTS,
                 )
                 if self.login is not None:
-                    client[self.dbname].authenticate(self.login, mechanism="MONGODB-X509")
+                    client[self.dbname].authenticate(self.login,
-
+                                                     mechanism='MONGODB-X509')
+            self.__conn = client
             return client
 
-        except (pymongo.errors.ConnectionFailure, pymongo.errors.OperationFailure) as exc:
+        except (pymongo.errors.ConnectionFailure,
-            logger.info("Exception in _connect(): {}".format(exc))
+                pymongo.errors.OperationFailure) as exc:
+            logger.info('Exception in connect(): {}'.format(exc))
             raise ConnectionError(str(exc)) from exc
         except pymongo.errors.ConfigurationError as exc:
             raise ConfigurationError from exc
 
+    def close(self):
+        try:
+            self.__conn.close()
+            self.__conn = None
+        except Exception as exc:
+            logger.info('Exception in planetmint.backend.localmongodb.close(): {}'.format(exc))
+            raise ConnectionError(str(exc)) from exc
 
 MONGO_OPTS = {
     "socketTimeoutMS": 20000,

planetmint/backend/localmongodb/convert.py

@@ -14,7 +14,7 @@ register_query = module_dispatch_registrar(convert)
 
 @register_query(LocalMongoDBConnection)
 def prepare_asset(connection, transaction_type, transaction_id, filter_operation, asset):
-    if transaction_type in filter_operation:
+    if transaction_type not in filter_operation:
         asset["id"] = transaction_id
     return asset
 

planetmint/backend/localmongodb/query.py

@@ -1,5 +1,4 @@
 from functools import singledispatch
-
 # Copyright © 2020 Interplanetary Database Association e.V.,
 # Planetmint and IPDB software contributors.
 # SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)

planetmint/backend/schema.py

@@ -9,7 +9,7 @@ from functools import singledispatch
 import logging
 
 from planetmint.config import Config
-from planetmint.backend.connection import connect
+from planetmint.backend.connection import Connection
 from planetmint.transactions.common.exceptions import ValidationError
 from planetmint.transactions.common.utils import (
     validate_all_values_for_key_in_obj,
@@ -134,8 +134,9 @@ def init_database(connection=None, dbname=None):
             configuration.
     """
 
-    connection = connection or connect()
+    connection = connection or Connection()
-    dbname = dbname or Config().get()["database"]["name"]
+    print("=========================================", connection.__class__, "=========================================================")
+    dbname = dbname or Config().get()['database']['name']
 
     create_database(connection, dbname)
     create_tables(connection, dbname)

planetmint/backend/tarantool/connection.py

@@ -7,29 +7,30 @@ import logging
 import tarantool
 
 from planetmint.config import Config
-from planetmint.transactions.common.exceptions import ConfigurationError
+from planetmint.transactions.common.exceptions import ConfigurationError, ConnectionError
 from planetmint.utils import Lazy
-from planetmint.backend.connection import Connection
+from planetmint.backend.connection import DBConnection
 
 logger = logging.getLogger(__name__)
 
 
-class TarantoolDBConnection(Connection):
+class TarantoolDBConnection(DBConnection):
     def __init__(
         self,
         host: str = "localhost",
         port: int = 3303,
-        user: str = None,
+        login: str = None,
         password: str = None,
         **kwargs,
     ):
         try:
-            super().__init__(**kwargs)
+            super().__init__(host=host, port=port, login=login, password=password, **kwargs)
-            self.host = host
+
-            self.port = port
+            dbconf = Config().get()["database"]
-            # TODO add user support later on
+            self.init_path = dbconf["init_config"]["absolute_path"]
-            self.init_path = Config().get()["database"]["init_config"]["absolute_path"]
+            self.drop_path = dbconf["drop_config"]["absolute_path"]
-            self.drop_path = Config().get()["database"]["drop_config"]["absolute_path"]
+            self.__conn = None
+            self.connect()
             self.SPACE_NAMES = [
                 "abci_chains",
                 "assets",
@@ -46,7 +47,7 @@ class TarantoolDBConnection(Connection):
             ]
         except tarantool.error.NetworkError as network_err:
             logger.info("Host cant be reached")
-            raise network_err
+            raise ConnectionError
         except ConfigurationError:
             logger.info("Exception in _connect(): {}")
             raise ConfigurationError
@@ -60,27 +61,40 @@ class TarantoolDBConnection(Connection):
             f.close()
         return "".join(execute).encode()
 
-    def _connect(self):
+    def connect(self):
-        return tarantool.connect(host=self.host, port=self.port)
+        if not self.__conn:
+            self.__conn = tarantool.connect(host=self.host, port=self.port)
+        return self.__conn
+
+    def close(self):
+        try:
+            self.__conn.close()
+            self.__conn = None
+        except Exception as exc:
+            logger.info('Exception in planetmint.backend.tarantool.close(): {}'.format(exc))
+            raise ConnectionError(str(exc)) from exc
 
     def get_space(self, space_name: str):
-        return self.conn.space(space_name)
+        return self.get_connection().space(space_name)
 
     def space(self, space_name: str):
         return self.query().space(space_name)
 
     def run(self, query, only_data=True):
         try:
-            return query.run(self.conn).data if only_data else query.run(self.conn)
+            return query.run(self.get_connection()).data if only_data else query.run(self.get_connection())
         except tarantool.error.OperationalError as op_error:
             raise op_error
         except tarantool.error.NetworkError as net_error:
             raise net_error
 
     def get_connection(self):
-        return self.conn
+        if not self.__conn:
+            self.connect()
+        return self.__conn
 
     def drop_database(self):
+        self.close()
         db_config = Config().get()["database"]
         cmd_resp = self.run_command(command=self.drop_path, config=db_config)  # noqa: F841
 

planetmint/backend/tarantool/convert.py

@@ -16,7 +16,7 @@ register_query = module_dispatch_registrar(convert)
 def prepare_asset(connection, transaction_type, transaction_id, filter_operation, asset):
     asset_id = transaction_id
     if transaction_type not in filter_operation:
-        asset_id = asset["id"]
+        asset_id = asset['id']
     return tuple([asset, transaction_id, asset_id])
 
 

planetmint/commands/planetmint.py

@@ -256,9 +256,9 @@ def run_drop(args):
         if response != "y":
             return
 
-    from planetmint.backend.connection import connect
+    from planetmint.backend.connection import Connection
 
-    conn = connect()
+    conn = Connection()
     try:
         schema.drop_database(conn)
     except DatabaseDoesNotExist:

planetmint/config.py

@@ -1,7 +1,6 @@
 import copy
 import logging
 import os
-
 # from planetmint.log import DEFAULT_LOGGING_CONFIG as log_config
 from planetmint.version import __version__  # noqa
 

planetmint/lib.py

@@ -10,6 +10,7 @@ MongoDB.
 import logging
 from collections import namedtuple
 from uuid import uuid4
+from planetmint.backend.connection import Connection
 
 import rapidjson
 
@@ -73,7 +74,7 @@ class Planetmint(object):
             self.validation = config_utils.load_validation_plugin(validationPlugin)
         else:
             self.validation = BaseValidationRules
-        self.connection = connection if connection is not None else planetmint.backend.connect()
+        self.connection = connection if connection is not None else Connection()
 
     def post_transaction(self, transaction, mode):
         """Submit a valid transaction to the mempool."""

planetmint/log.py

@@ -11,7 +11,6 @@ from logging.config import dictConfig as set_logging_config
 from planetmint.config import Config, DEFAULT_LOGGING_CONFIG
 import os
 
-
 def _normalize_log_level(level):
     try:
         return level.upper()

planetmint/transactions/common/exceptions.py

@@ -11,6 +11,9 @@ from planetmint.exceptions import BigchainDBError
 class ConfigurationError(BigchainDBError):
     """Raised when there is a problem with server configuration"""
     
+class ConnectionError(BigchainDBError):
+    """Raised when there is a problem with server connection"""
+
 
 class DatabaseDoesNotExist(BigchainDBError):
     """Raised when trying to delete the database but the db is not there"""

planetmint/transactions/common/transaction.py

@@ -904,8 +904,12 @@ class Transaction(object):
         if asset_id != self.asset["id"]:
             raise AssetIdMismatch(("The asset id of the input does not" " match the asset id of the" " transaction"))
 
-        input_amount = sum([input_condition.amount for input_condition in input_conditions])
+        input_amount = sum(
-        output_amount = sum([output_condition.amount for output_condition in self.outputs])
+            [input_condition.amount for input_condition in input_conditions]
+        )
+        output_amount = sum(
+            [output_condition.amount for output_condition in self.outputs]
+        )
 
         if output_amount != input_amount:
             raise AmountError(

planetmint/version.py

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
 # Code is Apache-2.0 and docs are CC-BY-4.0
 
-__version__ = "1.2.1"
+__version__ = "1.2.2"
 __short_version__ = "1.2"
 
 # Supported Tendermint versions

setup.py

@@ -89,7 +89,15 @@ docs_require = [
 
 check_setuptools_features()
 
-dev_require = ["ipdb", "ipython", "watchdog", "logging_tree", "pre-commit", "twine", "ptvsd"]
+dev_require = [
+    "ipdb",
+    "ipython",
+    "watchdog",
+    "logging_tree",
+    "pre-commit",
+    "twine",
+    "ptvsd"
+]
 
 tests_require = [
     "coverage",

tests/backend/tarantool/conftest.py

@@ -1,5 +1,5 @@
 import pytest
-from planetmint.backend.connection import connect
+from planetmint.backend.connection import Connection
 
 
 #
@@ -27,5 +27,5 @@ from planetmint.backend.connection import connect
 
 @pytest.fixture
 def db_conn():
-    conn = connect()
+    conn = Connection()
     return conn

tests/backend/tarantool/test_queries.py

@@ -16,7 +16,6 @@ pytestmark = pytest.mark.bdb
 
 def test_get_txids_filtered(signed_create_tx, signed_transfer_tx, db_conn):
     from planetmint.backend.tarantool import query
-
     # create and insert two blocks, one for the create and one for the
     # transfer transaction
     create_tx_dict = signed_create_tx.to_dict()

tests/backend/test_connection.py

@@ -7,16 +7,12 @@ import pytest
 
 
 def test_get_connection_raises_a_configuration_error(monkeypatch):
-    from planetmint.transactions.common.exceptions import ConfigurationError
+    from planetmint.transactions.common.exceptions import ConfigurationError, ConnectionError
-    from planetmint.backend.connection import connect
+    from planetmint.backend.connection import Connection
+    from planetmint.backend.localmongodb.connection import LocalMongoDBConnection
+    from planetmint.backend.tarantool.connection import TarantoolDBConnection
     
-    with pytest.raises(ConfigurationError):
+    with pytest.raises(ConnectionError):
-        connect("localhost", "1337", "mydb", "password", "msaccess")
+        LocalMongoDBConnection('localhost', '1337', 'mydb', 'password')
-
+    with pytest.raises(ConnectionError):
-    with pytest.raises(ConfigurationError):
+        TarantoolDBConnection('localhost', '1337', 'mydb', 'password')
-        # We need to force a misconfiguration here
-        monkeypatch.setattr(
-            "planetmint.backend.connection.BACKENDS", {"catsandra": "planetmint.backend.meowmeow.Catsandra"}
-        )
-
-        connect("localhost", "1337", "mydb", "password", "catsandra")

tests/commands/conftest.py

@@ -8,7 +8,6 @@ import pytest
 
 from planetmint.config import Config
 
-
 @pytest.fixture
 def mock_run_configure(monkeypatch):
     from planetmint.commands import planetmint

tests/commands/test_commands.py

@@ -14,13 +14,13 @@ import pytest
 from planetmint.config import Config
 from planetmint import ValidatorElection
 from planetmint.commands.planetmint import run_election_show
+from planetmint.backend.connection import Connection
 from planetmint.transactions.types.elections.election import Election
 from planetmint.lib import Block
 from planetmint.transactions.types.elections.chain_migration_election import ChainMigrationElection
 
 from tests.utils import generate_election, generate_validators
 
-
 def test_make_sure_we_dont_remove_any_command():
     # thanks to: http://stackoverflow.com/a/18161115/597097
     from planetmint.commands.planetmint import create_parser
@@ -95,7 +95,6 @@ def test_bigchain_show_config(capsys):
     # dict returned is different that what is expected after run_show_config
     # and run_show_config updates the planetmint.config
     from planetmint.config import Config
-
     _config = Config().get()
     sorted_config = json.dumps(_config, indent=4, sort_keys=True)
     print(f"_config : {sorted_config}")
@@ -104,11 +103,10 @@ def test_bigchain_show_config(capsys):
 
 
 def test__run_init(mocker):
-    init_db_mock = mocker.patch("planetmint.backend.tarantool.connection.TarantoolDBConnection.init_database")
+    init_db_mock = mocker.patch(
+        'planetmint.backend.tarantool.connection.TarantoolDBConnection.init_database')
 
-    from planetmint.backend.connection import connect
+    conn = Connection()
-
-    conn = connect()
     conn.init_database()
 
     init_db_mock.assert_called_once_with()

tests/conftest.py

@@ -19,11 +19,10 @@ from ipld import marshal, multihash
 from collections import namedtuple
 from logging import getLogger
 from logging.config import dictConfig
-from planetmint.backend.connection import connect
+from planetmint.backend.connection import Connection
 from planetmint.backend.tarantool.connection import TarantoolDBConnection
 
 import pytest
-
 # from pymongo import MongoClient
 
 from planetmint import ValidatorElection
@@ -118,22 +117,22 @@ def _configure_planetmint(request):
     config_utils.set_config(config)
 
 
-@pytest.fixture(scope="session")
+@pytest.fixture(scope='session')
 def _setup_database(_configure_planetmint):  # TODO Here is located setup database
     from planetmint.config import Config
 
-    print("Initializing test db")
+    print('Initializing test db')
-    dbname = Config().get()["database"]["name"]
+    dbname = Config().get()['database']['name']
-    conn = connect()
+    conn = Connection()
 
     _drop_db(conn, dbname)
     schema.init_database(conn, dbname)
-    print("Finishing init database")
+    print('Finishing init database')
 
     yield
 
-    print("Deleting `{}` database".format(dbname))
+    print('Deleting `{}` database'.format(dbname))
-    conn = connect()
+    conn = Connection()
     _drop_db(conn, dbname)
 
     print("Finished deleting `{}`".format(dbname))
@@ -145,10 +144,9 @@ def _bdb(_setup_database, _configure_planetmint):
     from planetmint.transactions.common.transaction import Transaction
     from .utils import flush_db
     from planetmint.config import Config
-
+    conn = Connection()
-    conn = connect()
     yield
-    dbname = Config().get()["database"]["name"]
+    dbname = Config().get()['database']['name']
     flush_db(conn, dbname)
 
     to_dict.cache_clear()
@@ -252,7 +250,6 @@ def abci_fixture():
 
     return types_pb2
 
-
 @pytest.fixture
 def b():
     from planetmint import Planetmint
@@ -393,7 +390,7 @@ def db_name(db_config):
 
 @pytest.fixture
 def db_conn():
-    return connect()
+    return Connection()
 
 
 @pytest.fixture
@@ -550,7 +547,6 @@ def tarantool_client(db_context):  # TODO Here add TarantoolConnectionClass
 #
 #
 
-
 @pytest.fixture
 def utxo_collection(tarantool_client, _setup_database):
     return tarantool_client.get_space("utxos")
@@ -568,7 +564,6 @@ def dummy_unspent_outputs():
 @pytest.fixture
 def utxoset(dummy_unspent_outputs, utxo_collection):
     from json import dumps
-
     num_rows_before_operation = utxo_collection.select().rowcount
     for utxo in dummy_unspent_outputs:
         res = utxo_collection.insert((utxo["transaction_id"], utxo["output_index"], dumps(utxo)))
@@ -624,7 +619,6 @@ def node_keys():
         "PecJ58SaNRsWJZodDmqjpCWqG6btdwXFHLyE40RYlYM=": "uz8bYgoL4rHErWT1gjjrnA+W7bgD/uDQWSRKDmC8otc95wnnxJo1GxYlmh0OaqOkJaobpu13BcUcvITjRFiVgw==",
     }
 
-
 @pytest.fixture
 def priv_validator_path(node_keys):
     (public_key, private_key) = list(node_keys.items())[0]

tests/tendermint/test_fastquery.py

@@ -91,7 +91,7 @@ def test_filter_unspent_outputs(b, user_pk, user_sk):
 
 def test_outputs_query_key_order(b, user_pk, user_sk, user2_pk, user2_sk):
     from planetmint import backend
-    from planetmint.backend.connection import connect
+    from planetmint.backend.connection import Connection
     from planetmint.backend import query
 
     tx1 = Create.generate([user_pk], [([user_pk], 3), ([user_pk], 2), ([user_pk], 1)]).sign([user_sk])
@@ -116,7 +116,11 @@ def test_outputs_query_key_order(b, user_pk, user_sk, user2_pk, user2_sk):
     assert len(outputs) == 1
 
     # clean the transaction, metdata and asset collection
-    connection = connect()
+    # conn = connect()
+    connection = Connection()
+    # conn.run(conn.collection('transactions').delete_many({}))
+    # conn.run(conn.collection('metadata').delete_many({}))
+    # conn.run(conn.collection('assets').delete_many({}))
     query.delete_transactions(connection, txn_ids=[tx1.id, tx2.id])
 
     b.store_bulk_transactions([tx1])

tests/tendermint/test_lib.py

@@ -290,7 +290,6 @@ def test_delete_zero_unspent_outputs(b, utxoset):
 @pytest.mark.bdb
 def test_delete_one_unspent_outputs(b, utxoset):
     from planetmint.backend.tarantool.connection import TarantoolDBConnection
-
     unspent_outputs, utxo_collection = utxoset
     delete_res = b.delete_unspent_outputs(unspent_outputs[0])
     if not isinstance(b.connection, TarantoolDBConnection):
@@ -319,7 +318,6 @@ def test_delete_one_unspent_outputs(b, utxoset):
 @pytest.mark.bdb
 def test_delete_many_unspent_outputs(b, utxoset):
     from planetmint.backend.tarantool.connection import TarantoolDBConnection
-
     unspent_outputs, utxo_collection = utxoset
     delete_res = b.delete_unspent_outputs(*unspent_outputs[::2])
     if not isinstance(b.connection, TarantoolDBConnection):
@@ -357,7 +355,6 @@ def test_store_zero_unspent_output(b, utxo_collection):
 @pytest.mark.bdb
 def test_store_one_unspent_output(b, unspent_output_1, utxo_collection):
     from planetmint.backend.tarantool.connection import TarantoolDBConnection
-
     res = b.store_unspent_outputs(unspent_output_1)
     if not isinstance(b.connection, TarantoolDBConnection):
         assert res.acknowledged
@@ -382,7 +379,6 @@ def test_store_one_unspent_output(b, unspent_output_1, utxo_collection):
 @pytest.mark.bdb
 def test_store_many_unspent_outputs(b, unspent_outputs, utxo_collection):
     from planetmint.backend.tarantool.connection import TarantoolDBConnection
-
     res = b.store_unspent_outputs(*unspent_outputs)
     if not isinstance(b.connection, TarantoolDBConnection):
         assert res.acknowledged

tests/test_core.py

@@ -18,6 +18,7 @@ from planetmint.transactions.types.elections.election import Election
 from planetmint.lib import Block
 from planetmint.transactions.types.elections.chain_migration_election import ChainMigrationElection
 from planetmint.upsert_validator.validator_election import ValidatorElection
+from planetmint.backend.exceptions import ConnectionError
 from planetmint.upsert_validator.validator_utils import new_validator_set
 from planetmint.tendermint_utils import public_key_to_base64
 from planetmint.version import __tm_supported_versions__
@@ -54,34 +55,25 @@ def config(request, monkeypatch):
     monkeypatch.setattr("planetmint.config", config)
     return config
 
+def test_bigchain_class_initialization_with_parameters():
+    from planetmint.backend.localmongodb.connection import LocalMongoDBConnection
+    from planetmint.transactions.common.exceptions import ConfigurationError
+
+    init_db_kwargs = {
+        'backend': 'localmongodb',
+        'host': 'this_is_the_db_host',
+        'port': 12345,
+        'name': 'this_is_the_db_name',
+    }
+    with pytest.raises(ConfigurationError):
+        LocalMongoDBConnection(**init_db_kwargs)
 
 def test_bigchain_class_default_initialization(config):
     from planetmint import Planetmint
     from planetmint.validation import BaseValidationRules
-
     planet = Planetmint()
-    assert planet.connection.host == config["database"]["host"]
+    assert planet.connection.host == config['database']['host']
-    assert planet.connection.port == config["database"]["port"]
+    assert planet.connection.port == config['database']['port']
-    assert planet.validation == BaseValidationRules
-
-
-def test_bigchain_class_initialization_with_parameters():
-    from planetmint import Planetmint
-    from planetmint.backend import connect
-    from planetmint.validation import BaseValidationRules
-
-    init_db_kwargs = {
-        "backend": "localmongodb",
-        "host": "this_is_the_db_host",
-        "port": 12345,
-        "name": "this_is_the_db_name",
-    }
-    connection = connect(**init_db_kwargs)
-    planet = Planetmint(connection=connection)
-    assert planet.connection == connection
-    assert planet.connection.host == init_db_kwargs["host"]
-    assert planet.connection.port == init_db_kwargs["port"]
-    # assert planet.connection.name == init_db_kwargs['name']
     assert planet.validation == BaseValidationRules
 
 

tests/web/test_transactions.py

@@ -348,7 +348,9 @@ def test_post_transfer_transaction_endpoint(client, user_pk, user_sk, posted_cre
 
 
 @pytest.mark.abci
-def test_post_invalid_transfer_transaction_returns_400(client, user_pk, posted_create_tx):
+def test_post_invalid_transfer_transaction_returns_400(
+    client, user_pk, posted_create_tx
+):
     from planetmint.transactions.common.exceptions import InvalidSignature
 
     transfer_tx = Transfer.generate(posted_create_tx.to_inputs(), [([user_pk], 1)], asset_id=posted_create_tx.id)