1 # -*- coding: utf-8 -*-
4 # Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
5 # This file is part of openmano
8 # Licensed under the Apache License, Version 2.0 (the "License"); you may
9 # not use this file except in compliance with the License. You may obtain
10 # a copy of the License at
12 # http://www.apache.org/licenses/LICENSE-2.0
14 # Unless required by applicable law or agreed to in writing, software
15 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
16 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
17 # License for the specific language governing permissions and limitations
20 # For those usages not covered by the Apache License, Version 2.0 please
21 # contact with: nfvlabs@tid.es
25 Base class for openmano database manipulation
27 __author__
="Alfonso Tierno"
28 __date__
="$4-Apr-2016 10:05:01$"
38 from jsonschema
import validate
as js_v
, exceptions
as js_e
40 HTTP_Bad_Request
= 400
41 HTTP_Unauthorized
= 401
43 HTTP_Method_Not_Allowed
= 405
44 HTTP_Request_Timeout
= 408
46 HTTP_Service_Unavailable
= 503
47 HTTP_Internal_Server_Error
= 500
49 def _check_valid_uuid(uuid
):
50 id_schema
= {"type" : "string", "pattern": "^[a-fA-F0-9]{8}(-[a-fA-F0-9]{4}){3}-[a-fA-F0-9]{12}$"}
51 id_schema2
= {"type" : "string", "pattern": "^[a-fA-F0-9]{32}$"}
55 except js_e
.ValidationError
:
57 js_v(uuid
, id_schema2
)
59 except js_e
.ValidationError
:
63 def _convert_datetime2str(var
):
64 '''Converts a datetime variable to a string with the format '%Y-%m-%dT%H:%i:%s'
65 It enters recursively in the dict var finding this kind of variables
68 for k
,v
in var
.items():
69 if type(v
) is datetime
.datetime
:
70 var
[k
]= v
.strftime('%Y-%m-%dT%H:%M:%S')
71 elif type(v
) is dict or type(v
) is list or type(v
) is tuple:
72 _convert_datetime2str(v
)
73 if len(var
) == 0: return True
74 elif type(var
) is list or type(var
) is tuple:
76 _convert_datetime2str(v
)
78 def _convert_bandwidth(data
, reverse
=False, logger
=None):
79 '''Check the field bandwidth recursivelly and when found, it removes units and convert to number
80 It assumes that bandwidth is well formed
82 'data': dictionary bottle.FormsDict variable to be checked. None or empty is consideted valid
83 'reverse': by default convert form str to int (Mbps), if True it convert from number to units
87 if type(data
) is dict:
89 if type(data
[k
]) is dict or type(data
[k
]) is tuple or type(data
[k
]) is list:
90 _convert_bandwidth(data
[k
], reverse
, logger
)
91 if "bandwidth" in data
:
93 value
=str(data
["bandwidth"])
95 pos
= value
.find("bps")
97 if value
[pos
-1]=="G": data
["bandwidth"] = int(data
["bandwidth"][:pos
-1]) * 1000
98 elif value
[pos
-1]=="k": data
["bandwidth"]= int(data
["bandwidth"][:pos
-1]) / 1000
99 else: data
["bandwidth"]= int(data
["bandwidth"][:pos
-1])
101 value
= int(data
["bandwidth"])
102 if value
% 1000 == 0: data
["bandwidth"]=str(value
/1000) + " Gbps"
103 else: data
["bandwidth"]=str(value
) + " Mbps"
106 logger
.error("convert_bandwidth exception for type '%s' data '%s'", type(data
["bandwidth"]), data
["bandwidth"])
108 if type(data
) is tuple or type(data
) is list:
110 if type(k
) is dict or type(k
) is tuple or type(k
) is list:
111 _convert_bandwidth(k
, reverse
, logger
)
113 def _convert_str2boolean(data
, items
):
114 '''Check recursively the content of data, and if there is an key contained in items, convert value from string to boolean
117 'data': dictionary variable to be checked. None or empty is considered valid
118 'items': tuple of keys to convert
122 if type(data
) is dict:
123 for k
in data
.keys():
124 if type(data
[k
]) is dict or type(data
[k
]) is tuple or type(data
[k
]) is list:
125 _convert_str2boolean(data
[k
], items
)
127 if type(data
[k
]) is str:
128 if data
[k
]=="false" or data
[k
]=="False" or data
[k
]=="0": data
[k
]=False
129 elif data
[k
]=="true" or data
[k
]=="True" or data
[k
]=="1": data
[k
]=True
130 elif type(data
[k
]) is int:
131 if data
[k
]==0: data
[k
]=False
132 elif data
[k
]==1: data
[k
]=True
133 if type(data
) is tuple or type(data
) is list:
135 if type(k
) is dict or type(k
) is tuple or type(k
) is list:
136 _convert_str2boolean(k
, items
)
138 class db_base_Exception(Exception):
139 '''Common Exception for all database exceptions'''
141 def __init__(self
, message
, http_code
=HTTP_Bad_Request
):
142 Exception.__init
__(self
, message
)
143 self
.http_code
= http_code
146 tables_with_created_field
=()
148 def __init__(self
, host
=None, user
=None, passwd
=None, database
=None, log_name
='db', log_level
=None):
152 self
.database
= database
154 self
.log_level
=log_level
155 self
.logger
= logging
.getLogger(log_name
)
157 self
.logger
.setLevel( getattr(logging
, log_level
) )
159 def connect(self
, host
=None, user
=None, passwd
=None, database
=None):
160 '''Connect to specific data base.
161 The first time a valid host, user, passwd and database must be provided,
162 Following calls can skip this parameters
165 if host
: self
.host
= host
166 if user
: self
.user
= user
167 if passwd
: self
.passwd
= passwd
168 if database
: self
.database
= database
170 self
.con
= mdb
.connect(self
.host
, self
.user
, self
.passwd
, self
.database
)
171 self
.logger
.debug("DB: connected to '%s' at '%s@%s'", self
.database
, self
.user
, self
.host
)
172 except mdb
.Error
as e
:
173 raise db_base_Exception("Cannot connect to DataBase '{}' at '{}@{}' Error {}: {}".format(
174 self
.database
, self
.user
, self
.host
, e
.args
[0], e
.args
[1]),
175 http_code
= HTTP_Unauthorized
)
177 def get_db_version(self
):
178 ''' Obtain the database schema version.
179 Return: (negative, text) if error or version 0.0 where schema_version table is missing
180 (version_int, version_text) if ok
182 cmd
= "SELECT version_int,version FROM schema_version"
187 self
.cur
= self
.con
.cursor()
188 self
.logger
.debug(cmd
)
189 self
.cur
.execute(cmd
)
190 rows
= self
.cur
.fetchall()
191 highest_version_int
=0
193 for row
in rows
: #look for the latest version
194 if row
[0]>highest_version_int
:
195 highest_version_int
, highest_version
= row
[0:2]
196 return highest_version_int
, highest_version
197 except (mdb
.Error
, AttributeError) as e
:
198 #self.logger.error("get_db_version DB Exception %d: %s. Command %s",e.args[0], e.args[1], cmd)
199 self
._format
_error
(e
, tries
)
202 def disconnect(self
):
203 '''disconnect from specific data base'''
207 except mdb
.Error
as e
:
208 self
.logger
.error("while disconnecting from DB: Error %d: %s",e
.args
[0], e
.args
[1])
210 except AttributeError as e
: #self.con not defined
211 if e
[0][-5:] == "'con'":
212 self
.logger
.warn("while disconnecting from DB: Error %d: %s",e
.args
[0], e
.args
[1])
217 def _format_error(self
, e
, tries
=1, command
=None, extra
=None):
218 '''Creates a text error base on the produced exception
221 retry: in case of timeout, if reconnecting to database and retry, or raise and exception
222 cmd: database command that produce the exception
223 command: if the intention is update or delete
224 extra: extra information to add to some commands
226 HTTP error in negative, formatted error text
228 if isinstance(e
,AttributeError ):
229 raise db_base_Exception("DB Exception " + str(e
), HTTP_Internal_Server_Error
)
230 if e
.args
[0]==2006 or e
.args
[0]==2013 : #MySQL server has gone away (((or))) Exception 2013: Lost connection to MySQL server during query
232 self
.logger
.warn("DB Exception '%s'. Retry", str(e
))
237 raise db_base_Exception("Database connection timeout Try Again", HTTP_Request_Timeout
)
239 fk
=e
.args
[1].find("foreign key constraint fails")
241 if command
=="update":
242 raise db_base_Exception("tenant_id '{}' not found.".format(extra
), HTTP_Not_Found
)
243 elif command
=="delete":
244 raise db_base_Exception("Resource is not free. There are {} that prevent deleting it.".format(extra
), HTTP_Conflict
)
245 de
= e
.args
[1].find("Duplicate entry")
246 fk
= e
.args
[1].find("for key")
247 uk
= e
.args
[1].find("Unknown column")
248 wc
= e
.args
[1].find("in 'where clause'")
249 fl
= e
.args
[1].find("in 'field list'")
250 #print de, fk, uk, wc,fl
252 if fk
>=0: #error 1062
253 raise db_base_Exception("Value {} already in use for {}".format(e
.args
[1][de
+15:fk
], e
.args
[1][fk
+7:]), HTTP_Conflict
)
256 raise db_base_Exception("Field {} can not be used for filtering".format(e
.args
[1][uk
+14:wc
]), HTTP_Bad_Request
)
258 raise db_base_Exception("Field {} does not exist".format(e
.args
[1][uk
+14:wc
]), HTTP_Bad_Request
)
259 raise db_base_Exception("Database internal Error {}: {}".format(e
.args
[0], e
.args
[1]), HTTP_Internal_Server_Error
)
261 def __str2db_format(self
, data
):
262 '''Convert string data to database format.
263 If data is None it returns the 'Null' text,
264 otherwise it returns the text surrounded by quotes ensuring internal quotes are escaped.
269 return json
.dumps(str(data
))
271 def __tuple2db_format_set(self
, data
):
272 '''Compose the needed text for a SQL SET, parameter 'data' is a pair tuple (A,B),
273 and it returns the text 'A="B"', where A is a field of a table and B is the value
274 If B is None it returns the 'A=Null' text, without surrounding Null by quotes
275 If B is not None it returns the text "A='B'" or 'A="B"' where B is surrounded by quotes,
276 and it ensures internal quotes of B are escaped.
279 return str(data
[0]) + "=Null"
281 return str(data
[0]) + '=' + json
.dumps(str(data
[1]))
283 def __tuple2db_format_where(self
, data
):
284 '''Compose the needed text for a SQL WHERE, parameter 'data' is a pair tuple (A,B),
285 and it returns the text 'A="B"', where A is a field of a table and B is the value
286 If B is None it returns the 'A is Null' text, without surrounding Null by quotes
287 If B is not None it returns the text "A='B'" or 'A="B"' where B is surrounded by quotes,
288 and it ensures internal quotes of B are escaped.
291 return str(data
[0]) + " is Null"
293 # if type(data[1]) is tuple: #this can only happen in a WHERE_OR clause
297 # text.append(str(data[0]) + " is Null")
301 # text.append( str(data[0]) + "='" + out + "'" )
302 # elif '"' not in out:
303 # text.append( str(data[0]) + '="' + out + '"' )
305 # text.append( str(data[0]) + '=' + json.dumps(out) )
306 # return " OR ".join(text)
309 return str(data
[0]) + '=' + json
.dumps(out
)
311 def __tuple2db_format_where_not(self
, data
):
312 '''Compose the needed text for a SQL WHERE(not). parameter 'data' is a pair tuple (A,B),
313 and it returns the text 'A<>"B"', where A is a field of a table and B is the value
314 If B is None it returns the 'A is not Null' text, without surrounding Null by quotes
315 If B is not None it returns the text "A<>'B'" or 'A<>"B"' where B is surrounded by quotes,
316 and it ensures internal quotes of B are escaped.
319 return str(data
[0]) + " is not Null"
321 return str(data
[0]) + '<>' + json
.dumps(out
)
323 def __remove_quotes(self
, data
):
324 '''remove single quotes ' of any string content of data dictionary'''
325 for k
,v
in data
.items():
328 data
[k
] = data
[k
].replace("'","_")
330 def _update_rows(self
, table
, UPDATE
, WHERE
, modified_time
=0):
331 ''' Update one or several rows into a table.
333 UPDATE: dictionary with the key: value to change
334 table: table where to update
335 WHERE: dictionary of elements to update
336 Return: the number of updated rows, exception if error
339 values
= ",".join(map(self
.__tuple
2db
_format
_set
, UPDATE
.iteritems() ))
341 values
+= ",modified_at={:f}".format(modified_time
)
342 cmd
= "UPDATE " + table
+" SET " + values
+\
343 " WHERE " + " and ".join(map(self
.__tuple
2db
_format
_where
, WHERE
.iteritems() ))
344 self
.logger
.debug(cmd
)
345 self
.cur
.execute(cmd
)
346 return self
.cur
.rowcount
348 def _new_row_internal(self
, table
, INSERT
, add_uuid
=False, root_uuid
=None, created_time
=0):
349 ''' Add one row into a table. It DOES NOT begin or end the transaction, so self.con.cursor must be created
351 INSERT: dictionary with the key:value to insert
352 table: table where to insert
353 add_uuid: if True, it will create an uuid key entry at INSERT if not provided
354 created_time: time to add to the created_time column
355 It checks presence of uuid and add one automatically otherwise
360 #create uuid if not provided
361 if 'uuid' not in INSERT
:
362 uuid
= INSERT
['uuid'] = str(myUuid
.uuid1()) # create_uuid
364 uuid
= str(INSERT
['uuid'])
368 #defining root_uuid if not provided
369 if root_uuid
is None:
372 created_at
= created_time
374 created_at
=time
.time()
376 cmd
= "INSERT INTO uuids (uuid, root_uuid, used_at, created_at) VALUES ('{:s}','{:s}','{:s}', {:f})".format(uuid
, root_uuid
, table
, created_at
)
377 self
.logger
.debug(cmd
)
378 self
.cur
.execute(cmd
)
380 cmd
= "INSERT INTO " + table
+" SET " + \
381 ",".join(map(self
.__tuple
2db
_format
_set
, INSERT
.iteritems() ))
383 cmd
+= ",created_at=%f" % created_time
384 self
.logger
.debug(cmd
)
385 self
.cur
.execute(cmd
)
389 def _get_rows(self
,table
,uuid
):
390 cmd
= "SELECT * FROM {} WHERE uuid='{}'".format(str(table
), str(uuid
))
391 self
.logger
.debug(cmd
)
392 self
.cur
.execute(cmd
)
393 rows
= self
.cur
.fetchall()
396 def new_row(self
, table
, INSERT
, add_uuid
=False, created_time
=0):
397 ''' Add one row into a table.
399 INSERT: dictionary with the key: value to insert
400 table: table where to insert
401 tenant_id: only useful for logs. If provided, logs will use this tenant_id
402 add_uuid: if True, it will create an uuid key entry at INSERT if not provided
403 It checks presence of uuid and add one automatically otherwise
404 Return: (result, uuid) where result can be 0 if error, or 1 if ok
406 if table
in self
.tables_with_created_field
and created_time
==0:
407 created_time
=time
.time()
412 self
.cur
= self
.con
.cursor()
413 return self
._new
_row
_internal
(table
, INSERT
, add_uuid
, None, created_time
)
415 except (mdb
.Error
, AttributeError) as e
:
416 self
._format
_error
(e
, tries
)
419 def update_rows(self
, table
, UPDATE
, WHERE
, modified_time
=0):
420 ''' Update one or several rows into a table.
422 UPDATE: dictionary with the key: value to change
423 table: table where to update
424 WHERE: dictionary of elements to update
425 Return: (result, descriptive text) where result indicates the number of updated files
427 if table
in self
.tables_with_created_field
and modified_time
==0:
428 modified_time
=time
.time()
433 self
.cur
= self
.con
.cursor()
434 return self
._update
_rows
(table
, UPDATE
, WHERE
)
436 except (mdb
.Error
, AttributeError) as e
:
437 self
._format
_error
(e
, tries
)
440 def delete_row_by_id(self
, table
, uuid
):
446 self
.cur
= self
.con
.cursor()
447 cmd
= "DELETE FROM {} WHERE uuid = '{}'".format(table
, uuid
)
448 self
.logger
.debug(cmd
)
449 self
.cur
.execute(cmd
)
450 deleted
= self
.cur
.rowcount
453 self
.cur
= self
.con
.cursor()
454 cmd
= "DELETE FROM uuids WHERE root_uuid = '{}'".format(uuid
)
455 self
.logger
.debug(cmd
)
456 self
.cur
.execute(cmd
)
458 except (mdb
.Error
, AttributeError) as e
:
459 self
._format
_error
(e
, tries
, "delete", "dependencies")
462 def delete_row(self
, **sql_dict
):
463 ''' Deletes rows from a table.
464 Attribute sql_dir: dictionary with the following key: value
465 'FROM': string of table name (Mandatory)
466 'WHERE': dict of key:values, translated to key=value AND ... (Optional)
467 'WHERE_NOT': dict of key:values, translated to key<>value AND ... (Optional)
468 if value is None, it is translated to key is not null
469 'LIMIT': limit of number of rows (Optional)
470 Return: the number of deleted or exception if error
473 from_
= "FROM " + str(sql_dict
['FROM'])
474 #print 'from_', from_
475 if 'WHERE' in sql_dict
and len(sql_dict
['WHERE']) > 0:
477 where_
= "WHERE " + " AND ".join(map(self
.__tuple
2db
_format
_where
, w
.iteritems()))
479 if 'WHERE_NOT' in sql_dict
and len(sql_dict
['WHERE_NOT']) > 0:
480 w
=sql_dict
['WHERE_NOT']
481 where_2
= " AND ".join(map(self
.__tuple
2db
_format
_where
_not
, w
.iteritems()))
482 if len(where_
)==0: where_
= "WHERE " + where_2
483 else: where_
= where_
+ " AND " + where_2
484 #print 'where_', where_
485 limit_
= "LIMIT " + str(sql_dict
['LIMIT']) if 'LIMIT' in sql_dict
else ""
486 #print 'limit_', limit_
487 cmd
= " ".join( ("DELETE", from_
, where_
, limit_
) )
492 self
.cur
= self
.con
.cursor()
493 self
.logger
.debug(cmd
)
494 self
.cur
.execute(cmd
)
495 deleted
= self
.cur
.rowcount
497 except (mdb
.Error
, AttributeError) as e
:
498 self
._format
_error
(e
, tries
)
501 def get_rows_by_id(self
, table
, uuid
):
502 '''get row from a table based on uuid'''
507 self
.cur
= self
.con
.cursor(mdb
.cursors
.DictCursor
)
508 cmd
="SELECT * FROM {} where uuid='{}'".format(str(table
), str(uuid
))
509 self
.logger
.debug(cmd
)
510 self
.cur
.execute(cmd
)
511 rows
= self
.cur
.fetchall()
513 except (mdb
.Error
, AttributeError) as e
:
514 self
._format
_error
(e
, tries
)
517 def get_rows(self
, **sql_dict
):
518 ''' Obtain rows from a table.
519 Attribute sql_dir: dictionary with the following key: value
520 'SELECT': list or tuple of fields to retrieve) (by default all)
521 'FROM': string of table name (Mandatory)
522 'WHERE': dict of key:values, translated to key=value (key is null) AND ... (Optional)
523 'WHERE_NOT': dict of key:values, translated to key<>value (key is not null) AND ... (Optional)
524 'WHERE_OR': dict of key:values, translated to key=value OR ... (Optional)
525 'WHERE_AND_OR: str 'AND' or 'OR'(by default) mark the priority to 'WHERE AND (WHERE_OR)' or (WHERE) OR WHERE_OR' (Optional)
526 'LIMIT': limit of number of rows (Optional)
527 'ORDER_BY': list or tuple of fields to order
528 Return: a list with dictionaries at each row
531 select_
= "SELECT " + ("*" if 'SELECT' not in sql_dict
else ",".join(map(str,sql_dict
['SELECT'])) )
532 #print 'select_', select_
533 from_
= "FROM " + str(sql_dict
['FROM'])
534 #print 'from_', from_
537 w
=sql_dict
.get('WHERE')
539 where_and
= " AND ".join(map(self
.__tuple
2db
_format
_where
, w
.iteritems() ))
540 w
=sql_dict
.get('WHERE_NOT')
542 if where_and
: where_and
+= " AND "
543 where_and
+= " AND ".join(map(self
.__tuple
2db
_format
_where
_not
, w
.iteritems() ) )
544 w
=sql_dict
.get('WHERE_OR')
546 where_or
= " OR ".join(map(self
.__tuple
2db
_format
_where
, w
.iteritems() ))
547 if where_and
and where_or
:
548 if sql_dict
.get("WHERE_AND_OR") == "AND":
549 where_
= "WHERE " + where_and
+ " AND (" + where_or
+ ")"
551 where_
= "WHERE (" + where_and
+ ") OR " + where_or
552 elif where_and
and not where_or
:
553 where_
= "WHERE " + where_and
554 elif not where_and
and where_or
:
555 where_
= "WHERE " + where_or
558 #print 'where_', where_
559 limit_
= "LIMIT " + str(sql_dict
['LIMIT']) if 'LIMIT' in sql_dict
else ""
560 order_
= "ORDER BY " + ",".join(map(str,sql_dict
['SELECT'])) if 'ORDER_BY' in sql_dict
else ""
562 #print 'limit_', limit_
563 cmd
= " ".join( (select_
, from_
, where_
, limit_
, order_
) )
568 self
.cur
= self
.con
.cursor(mdb
.cursors
.DictCursor
)
569 self
.logger
.debug(cmd
)
570 self
.cur
.execute(cmd
)
571 rows
= self
.cur
.fetchall()
573 except (mdb
.Error
, AttributeError) as e
:
574 self
._format
_error
(e
, tries
)
577 def get_table_by_uuid_name(self
, table
, uuid_name
, error_item_text
=None, allow_serveral
=False, WHERE_OR
={}, WHERE_AND_OR
="OR"):
578 ''' Obtain One row from a table based on name or uuid.
580 table: string of table name
581 uuid_name: name or uuid. If not uuid format is found, it is considered a name
582 allow_severeral: if False return ERROR if more than one row are founded
583 error_item_text: in case of error it identifies the 'item' name for a proper output text
584 'WHERE_OR': dict of key:values, translated to key=value OR ... (Optional)
585 'WHERE_AND_OR: str 'AND' or 'OR'(by default) mark the priority to 'WHERE AND (WHERE_OR)' or (WHERE) OR WHERE_OR' (Optional
586 Return: if allow_several==False, a dictionary with this row, or error if no item is found or more than one is found
587 if allow_several==True, a list of dictionaries with the row or rows, error if no item is found
590 if error_item_text
==None:
591 error_item_text
= table
592 what
= 'uuid' if af
.check_valid_uuid(uuid_name
) else 'name'
593 cmd
= " SELECT * FROM {} WHERE {}='{}'".format(table
, what
, uuid_name
)
595 where_or
= " OR ".join(map(self
.__tuple
2db
_format
_where
, WHERE_OR
.iteritems() ))
596 if WHERE_AND_OR
== "AND":
597 cmd
+= " AND (" + where_or
+ ")"
599 cmd
+= " OR " + where_or
606 self
.cur
= self
.con
.cursor(mdb
.cursors
.DictCursor
)
607 self
.logger
.debug(cmd
)
608 self
.cur
.execute(cmd
)
609 number
= self
.cur
.rowcount
611 return -HTTP_Not_Found
, "No %s found with %s '%s'" %(error_item_text
, what
, uuid_name
)
612 elif number
>1 and not allow_serveral
:
613 return -HTTP_Bad_Request
, "More than one %s found with %s '%s'" %(error_item_text
, what
, uuid_name
)
615 rows
= self
.cur
.fetchall()
617 rows
= self
.cur
.fetchone()
619 except (mdb
.Error
, AttributeError) as e
:
620 self
._format
_error
(e
, tries
)
623 def get_uuid(self
, uuid
):
624 '''check in the database if this uuid is already present'''
625 for retry_
in range(0,2):
628 self
.cur
= self
.con
.cursor(mdb
.cursors
.DictCursor
)
629 self
.cur
.execute("SELECT * FROM uuids where uuid='" + str(uuid
) + "'")
630 rows
= self
.cur
.fetchall()
631 return self
.cur
.rowcount
, rows
632 except (mdb
.Error
, AttributeError) as e
:
633 print "nfvo_db.get_uuid DB Exception %d: %s" % (e
.args
[0], e
.args
[1])
634 r
,c
= self
._format
_error
(e
)
635 if r
!=-HTTP_Request_Timeout
or retry_
==1: return r
,c
637 def get_uuid_from_name(self
, table
, name
):
638 '''Searchs in table the name and returns the uuid
644 self
.cur
= self
.con
.cursor(mdb
.cursors
.DictCursor
)
645 where_text
= "name='" + name
+"'"
646 self
.cur
.execute("SELECT * FROM " + table
+ " WHERE "+ where_text
)
647 rows
= self
.cur
.fetchall()
648 if self
.cur
.rowcount
==0:
649 return 0, "Name %s not found in table %s" %(name
, table
)
650 elif self
.cur
.rowcount
>1:
651 return self
.cur
.rowcount
, "More than one VNF with name %s found in table %s" %(name
, table
)
652 return self
.cur
.rowcount
, rows
[0]["uuid"]
653 except (mdb
.Error
, AttributeError) as e
:
654 self
._format
_error
(e
, tries
)