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 import MetaData, Table
18 from sqlalchemy.exc import NoSuchTableError
20 #Dict holding the columns names of the table as keys
21 #and their type, used for creation of the table
22 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'}
24 #Dict with all the specific senslab tables
25 tablenames_dict = {'slice_senslab': slice_table}
27 ##############################
31 SlabBase = declarative_base()
36 class SliceSenslab (SlabBase):
37 __tablename__ = 'slice_senslab'
38 record_id_user = Column(Integer, primary_key=True)
39 oar_job_id = Column( Integer,default = -1)
40 record_id_slice = Column(Integer)
41 slice_hrn = Column(String,nullable = False)
43 def __init__ (self, slice_hrn =None, oar_job_id=None, record_id_slice=None, record_id_user= None):
45 self.record_id_slice = record_id_slice
47 self.slice_hrn = slice_hrn
49 self.oar_job_id = oar_job_id
51 self.slice_hrn = slice_hrn
53 self.record_id_user= record_id_user
56 result="<Record id user =%s, slice hrn=%s, oar_job id=%s,Record id slice =%s" % \
57 (self.record_id_user, self.slice_hrn, self.oar_job_id, self.record_id_slice)
61 def dumpquerytodict(self):
62 dict = {'slice_hrn':self.slice_hrn,
63 'record_id':self.record_id_slice,
64 'record_id_user':self.record_id_user,
65 'oar_job_id':self.oar_job_id,
66 'record_id_slice':self.record_id_slice,
67 'slice_hrn':self.slice_hrn}
69 #class PeerSenslab(SlabBase):
70 #__tablename__ = 'peer_senslab'
71 #peername = Column(String, nullable = False)
72 #peerid = Column( Integer,primary_key=True)
74 #def __init__ (self,peername = None ):
76 #self.peername = peername
80 #result="<Peer id =%s, Peer name =%s" % (self.peerid, self.peername)
85 def __init__(self,config):
86 self.sl_base = SlabBase
89 # will be created lazily on-demand
90 self.slab_session = None
91 # the former PostgreSQL.py used the psycopg2 directly and was doing
92 #self.connection.set_client_encoding("UNICODE")
93 # it's unclear how to achieve this in sqlalchemy, nor if it's needed at all
94 # http://www.sqlalchemy.org/docs/dialects/postgresql.html#unicode
95 # we indeed have /var/lib/pgsql/data/postgresql.conf where
96 # this setting is unset, it might be an angle to tweak that if need be
97 # try a unix socket first - omitting the hostname does the trick
98 unix_url = "postgresql+psycopg2://%s:%s@:%s/%s"%\
99 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_PORT,dbname)
100 print >>sys.stderr, " \r\n \r\n SLAPOSTGRES INIT unix_url %s" %(unix_url)
101 # the TCP fallback method
102 tcp_url = "postgresql+psycopg2://%s:%s@%s:%s/%s"%\
103 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_HOST,config.SFA_DB_PORT,dbname)
104 for url in [ unix_url, tcp_url ] :
106 self.slab_engine = create_engine (url,echo_pool=True,echo=True)
112 self.slab_engine=None
113 raise Exception,"Could not connect to database"
116 self.slab_engine.execute ("select 1").scalar()
120 if self.slab_session is None:
121 Session=sessionmaker ()
122 self.slab_session=Session(bind=self.slab_engine)
123 return self.slab_session
128 #Close connection to database
130 if self.connection is not None:
131 self.connection.close()
132 self.connection = None
137 def exists(self, tablename):
139 Checks if the table specified as tablename exists.
144 metadata = MetaData (bind=self.slab_engine)
145 table=Table (tablename, metadata, autoload=True)
148 except NoSuchTableError:
149 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES EXISTS NOPE! tablename %s " %(tablename)
153 def createtable(self, tablename ):
155 Creates the specifed table. Uses the global dictionnary holding the tablenames and
160 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)
161 SlabBase.metadata.create_all(slab_engine)
165 def update_job(self, job_id, hrn):
166 slice_rec = slab_dbsession.query(SliceSenslab).filter_by(slice_hrn = hrn).first()
167 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES update_job slice_rec %s"%(slice_rec)
168 slice_rec.oar_job_id = job_id
169 slab_dbsession.commit()
171 def find (self, name = None, filter_dict = None):
172 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_dict %s"%(filter_dict)
174 #Filter_by can not handle more than one argument, hence these functions
175 def filter_id_user(query, user_id):
176 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_id_user"
177 return query.filter_by(record_id_user = user_id)
179 def filter_job(query, job):
180 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_job "
181 return query.filter_by(oar_job_id = job)
183 def filer_id_slice (query, id_slice):
184 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filer_id_slice"
185 return query.filter_by(record_id_slice = id_slice)
187 def filter_slice_hrn(query, hrn):
188 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_slice_hrn"
189 return query.filter_by(slice_hrn = hrn)
192 extended_filter = {'record_id_user': filter_id_user,
193 'oar_job_id':filter_job,
194 'record_id_slice': filer_id_slice,
195 'slice_hrn': filter_slice_hrn}
197 Q = slab_dbsession.query(SliceSenslab)
199 if filter_dict is not None:
200 for k in filter_dict:
202 newQ= extended_filter[k](Q, filter_dict[k])
205 print>>sys.stderr, "\r\n \t\t FFFFFFFFFFFFFFFFUUUUUUUUFUFUFU!!!!!!!!"
206 print>>sys.stderr, " HEEEEEEEEEEEEY %s " %(Q.first())
208 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find rec %s" %(rec)
209 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]))
211 ##for rec in Q.all():
212 #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])))
213 #print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find reclist %s" %(reclist)
219 from sfa.util.config import Config
221 slab_alchemy= SlabDB(Config())
222 slab_engine=slab_alchemy.slab_engine
223 slab_dbsession=slab_alchemy.session()