3 from sqlalchemy import create_engine, and_
4 from sqlalchemy.orm import sessionmaker
6 from sfa.util.config import Config
7 from sfa.util.sfalogging import logger
9 from sqlalchemy import Column, Integer, String, DateTime
10 from sqlalchemy import Table, Column, MetaData, join, ForeignKey
11 import sfa.storage.model as model
13 from sqlalchemy.ext.declarative import declarative_base
14 from sqlalchemy.orm import relationship, backref
17 from sqlalchemy.dialects import postgresql
19 from sqlalchemy import MetaData, Table
20 from sqlalchemy.exc import NoSuchTableError
22 from sqlalchemy import String
24 #Dict holding the columns names of the table as keys
25 #and their type, used for creation of the table
26 slice_table = {'record_id_user':'integer PRIMARY KEY references X ON DELETE CASCADE ON UPDATE CASCADE','oar_job_id':'integer DEFAULT -1', 'record_id_slice':'integer', 'slice_hrn':'text NOT NULL'}
28 #Dict with all the specific senslab tables
29 tablenames_dict = {'slice_senslab': slice_table}
31 ##############################
35 SlabBase = declarative_base()
40 class SliceSenslab (SlabBase):
41 __tablename__ = 'slice_senslab'
42 #record_id_user = Column(Integer, primary_key=True)
43 slice_hrn = Column(String,primary_key=True)
44 peer_authority = Column( String,nullable = True)
45 record_id_slice = Column(Integer)
46 record_id_user = Column(Integer)
47 oar_job_id = Column( Integer,default = -1)
48 node_list = Column(postgresql.ARRAY(String), nullable =True)
50 def __init__ (self, slice_hrn =None, oar_job_id=None, record_id_slice=None, record_id_user= None,peer_authority=None):
53 self.record_id_slice = record_id_slice
55 self.slice_hrn = slice_hrn
57 self.oar_job_id = oar_job_id
59 self.slice_hrn = slice_hrn
61 self.record_id_user= record_id_user
63 self.peer_authority = peer_authority
67 result="<Record id user =%s, slice hrn=%s, oar_job id=%s,Record id slice =%s node_list =%s peer_authority =%s"% \
68 (self.record_id_user, self.slice_hrn, self.oar_job_id, self.record_id_slice, self.node_list, self.peer_authority)
72 def dump_sqlalchemyobj_to_dict(self):
73 dict = {'slice_hrn':self.slice_hrn,
74 'peer_authority':self.peer_authority,
75 'record_id':self.record_id_slice,
76 'record_id_user':self.record_id_user,
77 'oar_job_id':self.oar_job_id,
78 'record_id_slice':self.record_id_slice,
79 'node_list':self.node_list}
81 #class PeerSenslab(SlabBase):
82 #__tablename__ = 'peer_senslab'
83 #peername = Column(String, nullable = False)
84 #peerid = Column( Integer,primary_key=True)
86 #def __init__ (self,peername = None ):
88 #self.peername = peername
92 #result="<Peer id =%s, Peer name =%s" % (self.peerid, self.peername)
97 def __init__(self,config):
98 self.sl_base = SlabBase
100 # will be created lazily on-demand
101 self.slab_session = None
102 # the former PostgreSQL.py used the psycopg2 directly and was doing
103 #self.connection.set_client_encoding("UNICODE")
104 # it's unclear how to achieve this in sqlalchemy, nor if it's needed at all
105 # http://www.sqlalchemy.org/docs/dialects/postgresql.html#unicode
106 # we indeed have /var/lib/pgsql/data/postgresql.conf where
107 # this setting is unset, it might be an angle to tweak that if need be
108 # try a unix socket first - omitting the hostname does the trick
109 unix_url = "postgresql+psycopg2://%s:%s@:%s/%s"%\
110 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_PORT,dbname)
111 print >>sys.stderr, " \r\n \r\n SLAPOSTGRES INIT unix_url %s" %(unix_url)
112 # the TCP fallback method
113 tcp_url = "postgresql+psycopg2://%s:%s@%s:%s/%s"%\
114 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_HOST,config.SFA_DB_PORT,dbname)
115 for url in [ unix_url, tcp_url ] :
117 self.slab_engine = create_engine (url,echo_pool=True,echo=True)
123 self.slab_engine=None
124 raise Exception,"Could not connect to database"
129 self.slab_engine.execute ("select 1").scalar()
134 if self.slab_session is None:
135 Session=sessionmaker ()
136 self.slab_session=Session(bind=self.slab_engine)
137 return self.slab_session
142 #Close connection to database
144 if self.connection is not None:
145 self.connection.close()
146 self.connection = None
151 def exists(self, tablename):
153 Checks if the table specified as tablename exists.
158 metadata = MetaData (bind=self.slab_engine)
159 table=Table (tablename, metadata, autoload=True)
162 except NoSuchTableError:
163 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES EXISTS NOPE! tablename %s " %(tablename)
167 def createtable(self, tablename ):
169 Creates the specifed table. Uses the global dictionnary holding the tablenames and
174 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES createtable SlabBase.metadata.sorted_tables %s \r\n engine %s" %(SlabBase.metadata.sorted_tables , slab_engine)
175 SlabBase.metadata.create_all(slab_engine)
178 #Updates the job_id and the nodes list
179 #The nodes list is never erased.
180 def update_job(self, hrn, job_id= None, nodes = None ):
181 slice_rec = slab_dbsession.query(SliceSenslab).filter_by(slice_hrn = hrn).first()
182 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES update_job slice_rec %s"%(slice_rec)
183 if job_id is not None:
184 slice_rec.oar_job_id = job_id
185 if nodes is not None :
186 slice_rec.node_list = nodes
187 slab_dbsession.commit()
189 def find (self, name = None, filter_dict = None):
190 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_dict %s"%(filter_dict)
192 #Filter_by can not handle more than one argument, hence these functions
193 def filter_id_user(query, user_id):
194 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_id_user"
195 return query.filter_by(record_id_user = user_id)
197 def filter_job(query, job):
198 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_job "
199 return query.filter_by(oar_job_id = job)
201 def filer_id_slice (query, id_slice):
202 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filer_id_slice"
203 return query.filter_by(record_id_slice = id_slice)
205 def filter_slice_hrn(query, hrn):
206 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_slice_hrn"
207 return query.filter_by(slice_hrn = hrn)
210 extended_filter = {'record_id_user': filter_id_user,
211 'oar_job_id':filter_job,
212 'record_id_slice': filer_id_slice,
213 'slice_hrn': filter_slice_hrn}
215 Q = slab_dbsession.query(SliceSenslab)
217 if filter_dict is not None:
218 for k in filter_dict:
220 newQ= extended_filter[k](Q, filter_dict[k])
223 print>>sys.stderr, "\r\n \t\t FFFFFFFFFFFFFFFFUUUUUUUUFUFUFU!!!!!!!!"
224 print>>sys.stderr, " HEEEEEEEEEEEEY %s " %(Q.first())
226 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find rec %s" %(rec)
227 return dict(zip(['record_id_user','oar_job_id', 'record_id_slice','slice_hrn'],[rec.record_id_user,rec.oar_job_id,rec.record_id_slice, rec.slice_hrn]))
229 ##for rec in Q.all():
230 #reclist.append(dict(zip(['record_id_user','oar_job_id', 'record_id_slice','slice_hrn'],[rec.record_id_user,rec.oar_job_id,rec.record_id_slice, rec.slice_hrn])))
236 from sfa.util.config import Config
238 slab_alchemy= SlabDB(Config())
239 slab_engine=slab_alchemy.slab_engine
240 slab_dbsession=slab_alchemy.session()