Added dbapi module with dbapi-appliance unit tests

Co-authored-by: Denis Ignatenko <[email protected]>

Author: artembo

Diff for: .gitignore

@@ -16,3 +16,4 @@ sophia
 
 # Vim Swap files
 *.sw[a-z]
+.idea

Diff for: .travis.yml

@@ -15,7 +15,6 @@ env:
       - OS=ubuntu DIST=trusty
       - OS=ubuntu DIST=xenial
       - OS=ubuntu DIST=bionic
-      - OS=ubuntu DIST=disco
       - OS=debian DIST=jessie
       - OS=debian DIST=stretch
       - OS=debian DIST=buster

Diff for: appveyor.yml

@@ -2,20 +2,20 @@ environment:
   matrix:
     - PYTHON: "C:\\Python27"
     - PYTHON: "C:\\Python27-x64"
-    - PYTHON: "C:\\Python34"
-    - PYTHON: "C:\\Python34-x64"
     - PYTHON: "C:\\Python35"
     - PYTHON: "C:\\Python35-x64"
     - PYTHON: "C:\\Python36"
     - PYTHON: "C:\\Python36-x64"
     - PYTHON: "C:\\Python37"
     - PYTHON: "C:\\Python37-x64"
+    - PYTHON: "C:\\Python38"
+    - PYTHON: "C:\\Python38-x64"
 
 install:
   # install runtime dependencies
   - "%PYTHON%\\python.exe -m pip install -r requirements.txt"
   # install testing dependencies
-  - "%PYTHON%\\python.exe -m pip install pyyaml"
+  - "%PYTHON%\\python.exe -m pip install pyyaml dbapi-compliance==1.15.0"
 
 build: off
 

Diff for: tarantool/__init__.py

@@ -75,4 +75,4 @@ def connectmesh(addrs=({'host': 'localhost', 'port': 3301},), user=None,
 
 __all__ = ['connect', 'Connection', 'connectmesh', 'MeshConnection', 'Schema',
            'Error', 'DatabaseError', 'NetworkError', 'NetworkWarning',
-           'SchemaError']
+           'SchemaError', 'dbapi']

Diff for: tarantool/connection.py

@@ -11,6 +11,7 @@
 
 import ctypes
 import ctypes.util
+
 try:
     from ctypes import c_ssize_t
 except ImportError:
@@ -34,7 +35,8 @@
     RequestSubscribe,
     RequestUpdate,
     RequestUpsert,
-    RequestAuthenticate
+    RequestAuthenticate,
+    RequestExecute
 )
 from tarantool.space import Space
 from tarantool.const import (
@@ -49,11 +51,18 @@
     ITERATOR_ALL
 )
 from tarantool.error import (
+    Error,
     NetworkError,
     DatabaseError,
     InterfaceError,
     SchemaError,
     NetworkWarning,
+    OperationalError,
+    DataError,
+    IntegrityError,
+    InternalError,
+    ProgrammingError,
+    NotSupportedError,
     SchemaReloadException,
     warn
 )
@@ -76,11 +85,20 @@ class Connection(object):
     Also this class provides low-level interface to data manipulation
     (insert/delete/update/select).
     '''
-    Error = tarantool.error
+    # DBAPI Extension: supply exceptions as attributes on the connection
+    Error = Error
     DatabaseError = DatabaseError
     InterfaceError = InterfaceError
     SchemaError = SchemaError
     NetworkError = NetworkError
+    Warning = Warning
+    DataError = DataError
+    OperationalError = OperationalError
+    IntegrityError = IntegrityError
+    InternalError = InternalError
+    ProgrammingError = ProgrammingError
+    NotSupportedError = NotSupportedError
+    ImproperlyConfigured = Exception
 
     def __init__(self, host, port,
                  user=None,
@@ -91,6 +109,7 @@ def __init__(self, host, port,
                  connect_now=True,
                  encoding=ENCODING_DEFAULT,
                  call_16=False,
+                 use_list=True,
                  connection_timeout=CONNECTION_TIMEOUT):
         '''
         Initialize a connection to the server.
@@ -123,6 +142,7 @@ def __init__(self, host, port,
         self._socket = None
         self.connected = False
         self.error = True
+        self.use_list = use_list
         self.encoding = encoding
         self.call_16 = call_16
         self.connection_timeout = connection_timeout
@@ -260,7 +280,7 @@ def _send_request_wo_reconnect(self, request):
         while True:
             try:
                 self._socket.sendall(bytes(request))
-                response = Response(self, self._read_response())
+                response = Response(self, self._read_response(), self.use_list)
                 break
             except SchemaReloadException as e:
                 self.update_schema(e.schema_version)
@@ -292,13 +312,12 @@ def check():  # Check that connection is alive
                 retbytes = self._sys_recv(sock_fd, buf, 1, flag)
 
                 err = 0
-                if os.name!= 'nt':
+                if os.name != 'nt':
                     err = ctypes.get_errno()
                 else:
                     err = ctypes.get_last_error()
                     self._socket.setblocking(True)
 
-
                 WWSAEWOULDBLOCK = 10035
                 if (retbytes < 0) and (err == errno.EAGAIN or
                                        err == errno.EWOULDBLOCK or
@@ -445,7 +464,7 @@ def _join_v16(self, server_uuid):
         self._socket.sendall(bytes(request))
 
         while True:
-            resp = Response(self, self._read_response())
+            resp = Response(self, self._read_response(), self.use_list)
             yield resp
             if resp.code == REQUEST_TYPE_OK or resp.code >= REQUEST_TYPE_ERROR:
                 return
@@ -459,7 +478,7 @@ class JoinState:
         self._socket.sendall(bytes(request))
         state = JoinState.Handshake
         while True:
-            resp = Response(self, self._read_response())
+            resp = Response(self, self._read_response(), self.use_list)
             yield resp
             if resp.code >= REQUEST_TYPE_ERROR:
                 return
@@ -488,7 +507,7 @@ def subscribe(self, cluster_uuid, server_uuid, vclock=None):
         request = RequestSubscribe(self, cluster_uuid, server_uuid, vclock)
         self._socket.sendall(bytes(request))
         while True:
-            resp = Response(self, self._read_response())
+            resp = Response(self, self._read_response(), self.use_list)
             yield resp
             if resp.code >= REQUEST_TYPE_ERROR:
                 return
@@ -785,3 +804,23 @@ def generate_sync(self):
         Need override for async io connection
         '''
         return 0
+
+    def execute(self, query, params=None):
+        '''
+        Execute SQL request.
+        Execute SQL query in database. 
+
+        :param query: SQL syntax query
+        :type query: str
+
+        :param params: Bind values to use in query
+        :type params: list, dict
+
+        :return: query result data 
+        :rtype: list
+        '''
+        if not params:
+            params = []
+        request = RequestExecute(self, query, params)
+        response = self._send_request(request)
+        return response

Diff for: tarantool/const.py

@@ -29,6 +29,12 @@
 #
 IPROTO_DATA = 0x30
 IPROTO_ERROR = 0x31
+#
+IPROTO_METADATA = 0x32
+IPROTO_SQL_TEXT = 0x40
+IPROTO_SQL_BIND = 0x41
+IPROTO_SQL_INFO = 0x42
+
 
 IPROTO_GREETING_SIZE = 128
 IPROTO_BODY_MAX_LEN = 2147483648
@@ -44,6 +50,7 @@
 REQUEST_TYPE_EVAL = 8
 REQUEST_TYPE_UPSERT = 9
 REQUEST_TYPE_CALL = 10
+REQUEST_TYPE_EXECUTE = 11
 REQUEST_TYPE_PING = 64
 REQUEST_TYPE_JOIN = 65
 REQUEST_TYPE_SUBSCRIBE = 66