Added "Snowflake" DBMS support (#5980)

* Added SQL queries for 'Snowflake' DBMS

* Added necessary constants for the 'Snowflake' DBMS

* Added the 'Snowflake' DBMS to existing conditional which adds dynamic values to hardcoded statements (queries.xml)

* Added plugin logic for the 'Snowflake' DBMS

* Modified 'dbs' query to include 'ORDER BY'

* Moved 'LIMIT' to appear before 'OFFSET'

lib/controller/handler.py

@@ -41,6 +41,7 @@ from lib.core.settings import SQLITE_ALIASES
 from lib.core.settings import SYBASE_ALIASES
 from lib.core.settings import VERTICA_ALIASES
 from lib.core.settings import VIRTUOSO_ALIASES
+from lib.core.settings import SNOWFLAKE_ALIASES
 from lib.utils.sqlalchemy import SQLAlchemy
 
 from plugins.dbms.access.connector import Connector as AccessConn
@@ -99,6 +100,8 @@ from plugins.dbms.vertica.connector import Connector as VerticaConn
 from plugins.dbms.vertica import VerticaMap
 from plugins.dbms.virtuoso.connector import Connector as VirtuosoConn
 from plugins.dbms.virtuoso import VirtuosoMap
+from plugins.dbms.snowflake.connector import Connector as SnowflakeConn
+from plugins.dbms.snowflake import SnowflakeMap
 
 def setHandler():
     """
@@ -107,6 +110,7 @@ def setHandler():
     """
 
     items = [
+        (DBMS.SNOWFLAKE, SNOWFLAKE_ALIASES, SnowflakeMap, SnowflakeConn),
         (DBMS.MYSQL, MYSQL_ALIASES, MySQLMap, MySQLConn),
         (DBMS.ORACLE, ORACLE_ALIASES, OracleMap, OracleConn),
         (DBMS.PGSQL, PGSQL_ALIASES, PostgreSQLMap, PostgreSQLConn),
@@ -135,6 +139,7 @@ def setHandler():
         (DBMS.FRONTBASE, FRONTBASE_ALIASES, FrontBaseMap, FrontBaseConn),
         (DBMS.RAIMA, RAIMA_ALIASES, RaimaMap, RaimaConn),
         (DBMS.VIRTUOSO, VIRTUOSO_ALIASES, VirtuosoMap, VirtuosoConn),
+        # TODO: put snowflake stuff on this line
     ]
 
     _ = max(_ if (conf.get("dbms") or Backend.getIdentifiedDbms() or kb.heuristicExtendedDbms or "").lower() in _[1] else () for _ in items)

lib/core/dicts.py

@@ -39,6 +39,7 @@ from lib.core.settings import SYBASE_ALIASES
 from lib.core.settings import VERTICA_ALIASES
 from lib.core.settings import VIRTUOSO_ALIASES
 from lib.core.settings import CLICKHOUSE_ALIASES
+from lib.core.settings import SNOWFLAKE_ALIASES
 
 FIREBIRD_TYPES = {
     261: "BLOB",
@@ -250,6 +251,7 @@ DBMS_DICT = {
     DBMS.FRONTBASE: (FRONTBASE_ALIASES, None, None, None),
     DBMS.RAIMA: (RAIMA_ALIASES, None, None, None),
     DBMS.VIRTUOSO: (VIRTUOSO_ALIASES, None, None, None),
+    DBMS.SNOWFLAKE: (SNOWFLAKE_ALIASES, None, None, "snowflake"),
 }
 
 # Reference: https://blog.jooq.org/tag/sysibm-sysdummy1/

lib/core/enums.py

@@ -60,6 +60,7 @@ class DBMS(object):
     FRONTBASE = "FrontBase"
     RAIMA = "Raima Database Manager"
     VIRTUOSO = "Virtuoso"
+    SNOWFLAKE = "Snowflake"
 
 class DBMS_DIRECTORY_NAME(object):
     ACCESS = "access"
@@ -90,6 +91,7 @@ class DBMS_DIRECTORY_NAME(object):
     FRONTBASE = "frontbase"
     RAIMA = "raima"
     VIRTUOSO = "virtuoso"
+    SNOWFLAKE = "snowflake"
 
 class FORK(object):
     MARIADB = "MariaDB"

lib/core/settings.py

@@ -292,6 +292,7 @@ EXTREMEDB_SYSTEM_DBS = ("",)
 FRONTBASE_SYSTEM_DBS = ("DEFINITION_SCHEMA", "INFORMATION_SCHEMA")
 RAIMA_SYSTEM_DBS = ("",)
 VIRTUOSO_SYSTEM_DBS = ("",)
+SNOWFLAKE_SYSTEM_DBS = ("INFORMATION_SCHEMA",)
 
 # Note: (<regular>) + (<forks>)
 MSSQL_ALIASES = ("microsoft sql server", "mssqlserver", "mssql", "ms")
@@ -322,10 +323,11 @@ EXTREMEDB_ALIASES = ("extremedb", "extreme")
 FRONTBASE_ALIASES = ("frontbase",)
 RAIMA_ALIASES = ("raima database manager", "raima", "raimadb", "raimadm", "rdm", "rds", "velocis")
 VIRTUOSO_ALIASES = ("virtuoso", "openlink virtuoso")
+SNOWFLAKE_ALIASES = ("snowflake",)
 
 DBMS_DIRECTORY_DICT = dict((getattr(DBMS, _), getattr(DBMS_DIRECTORY_NAME, _)) for _ in dir(DBMS) if not _.startswith("_"))
 
-SUPPORTED_DBMS = set(MSSQL_ALIASES + MYSQL_ALIASES + PGSQL_ALIASES + ORACLE_ALIASES + SQLITE_ALIASES + ACCESS_ALIASES + FIREBIRD_ALIASES + MAXDB_ALIASES + SYBASE_ALIASES + DB2_ALIASES + HSQLDB_ALIASES + H2_ALIASES + INFORMIX_ALIASES + MONETDB_ALIASES + DERBY_ALIASES + VERTICA_ALIASES + MCKOI_ALIASES + PRESTO_ALIASES + ALTIBASE_ALIASES + MIMERSQL_ALIASES + CLICKHOUSE_ALIASES + CRATEDB_ALIASES + CUBRID_ALIASES + CACHE_ALIASES + EXTREMEDB_ALIASES + RAIMA_ALIASES + VIRTUOSO_ALIASES)
+SUPPORTED_DBMS = set(MSSQL_ALIASES + MYSQL_ALIASES + PGSQL_ALIASES + ORACLE_ALIASES + SQLITE_ALIASES + ACCESS_ALIASES + FIREBIRD_ALIASES + MAXDB_ALIASES + SYBASE_ALIASES + DB2_ALIASES + HSQLDB_ALIASES + H2_ALIASES + INFORMIX_ALIASES + MONETDB_ALIASES + DERBY_ALIASES + VERTICA_ALIASES + MCKOI_ALIASES + PRESTO_ALIASES + ALTIBASE_ALIASES + MIMERSQL_ALIASES + CLICKHOUSE_ALIASES + CRATEDB_ALIASES + CUBRID_ALIASES + CACHE_ALIASES + EXTREMEDB_ALIASES + RAIMA_ALIASES + VIRTUOSO_ALIASES + SNOWFLAKE_ALIASES)
 SUPPORTED_OS = ("linux", "windows")
 
 DBMS_ALIASES = ((DBMS.MSSQL, MSSQL_ALIASES), (DBMS.MYSQL, MYSQL_ALIASES), (DBMS.PGSQL, PGSQL_ALIASES), (DBMS.ORACLE, ORACLE_ALIASES), (DBMS.SQLITE, SQLITE_ALIASES), (DBMS.ACCESS, ACCESS_ALIASES), (DBMS.FIREBIRD, FIREBIRD_ALIASES), (DBMS.MAXDB, MAXDB_ALIASES), (DBMS.SYBASE, SYBASE_ALIASES), (DBMS.DB2, DB2_ALIASES), (DBMS.HSQLDB, HSQLDB_ALIASES), (DBMS.H2, H2_ALIASES), (DBMS.INFORMIX, INFORMIX_ALIASES), (DBMS.MONETDB, MONETDB_ALIASES), (DBMS.DERBY, DERBY_ALIASES), (DBMS.VERTICA, VERTICA_ALIASES), (DBMS.MCKOI, MCKOI_ALIASES), (DBMS.PRESTO, PRESTO_ALIASES), (DBMS.ALTIBASE, ALTIBASE_ALIASES), (DBMS.MIMERSQL, MIMERSQL_ALIASES), (DBMS.CLICKHOUSE, CLICKHOUSE_ALIASES), (DBMS.CRATEDB, CRATEDB_ALIASES), (DBMS.CUBRID, CUBRID_ALIASES), (DBMS.CACHE, CACHE_ALIASES), (DBMS.EXTREMEDB, EXTREMEDB_ALIASES), (DBMS.FRONTBASE, FRONTBASE_ALIASES), (DBMS.RAIMA, RAIMA_ALIASES), (DBMS.VIRTUOSO, VIRTUOSO_ALIASES))