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 oar_job_id = Column( Integer,default = -1)
44 record_id_slice = Column(Integer)
45 slice_hrn = Column(String,nullable = False)
46 node_list = Column(postgresql.ARRAY(String), nullable =True)
48 def __init__ (self, slice_hrn =None, oar_job_id=None, record_id_slice=None, record_id_user= None):
51 self.record_id_slice = record_id_slice
53 self.slice_hrn = slice_hrn
55 self.oar_job_id = oar_job_id
57 self.slice_hrn = slice_hrn
59 self.record_id_user= record_id_user
63 result="<Record id user =%s, slice hrn=%s, oar_job id=%s,Record id slice =%s node_list =%s" % \
64 (self.record_id_user, self.slice_hrn, self.oar_job_id, self.record_id_slice, self.node_list)
68 def dumpquerytodict(self):
69 dict = {'slice_hrn':self.slice_hrn,
70 'record_id':self.record_id_slice,
71 'record_id_user':self.record_id_user,
72 'oar_job_id':self.oar_job_id,
73 'record_id_slice':self.record_id_slice,
74 'slice_hrn':self.slice_hrn,
75 'node_list':self.node_list}
77 #class PeerSenslab(SlabBase):
78 #__tablename__ = 'peer_senslab'
79 #peername = Column(String, nullable = False)
80 #peerid = Column( Integer,primary_key=True)
82 #def __init__ (self,peername = None ):
84 #self.peername = peername
88 #result="<Peer id =%s, Peer name =%s" % (self.peerid, self.peername)
93 def __init__(self,config):
94 self.sl_base = SlabBase
96 # will be created lazily on-demand
97 self.slab_session = None
98 # the former PostgreSQL.py used the psycopg2 directly and was doing
99 #self.connection.set_client_encoding("UNICODE")
100 # it's unclear how to achieve this in sqlalchemy, nor if it's needed at all
101 # http://www.sqlalchemy.org/docs/dialects/postgresql.html#unicode
102 # we indeed have /var/lib/pgsql/data/postgresql.conf where
103 # this setting is unset, it might be an angle to tweak that if need be
104 # try a unix socket first - omitting the hostname does the trick
105 unix_url = "postgresql+psycopg2://%s:%s@:%s/%s"%\
106 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_PORT,dbname)
107 print >>sys.stderr, " \r\n \r\n SLAPOSTGRES INIT unix_url %s" %(unix_url)
108 # the TCP fallback method
109 tcp_url = "postgresql+psycopg2://%s:%s@%s:%s/%s"%\
110 (config.SFA_DB_USER,config.SFA_DB_PASSWORD,config.SFA_DB_HOST,config.SFA_DB_PORT,dbname)
111 for url in [ unix_url, tcp_url ] :
113 self.slab_engine = create_engine (url,echo_pool=True,echo=True)
119 self.slab_engine=None
120 raise Exception,"Could not connect to database"
125 self.slab_engine.execute ("select 1").scalar()
130 if self.slab_session is None:
131 Session=sessionmaker ()
132 self.slab_session=Session(bind=self.slab_engine)
133 return self.slab_session
138 #Close connection to database
140 if self.connection is not None:
141 self.connection.close()
142 self.connection = None
147 def exists(self, tablename):
149 Checks if the table specified as tablename exists.
154 metadata = MetaData (bind=self.slab_engine)
155 table=Table (tablename, metadata, autoload=True)
158 except NoSuchTableError:
159 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES EXISTS NOPE! tablename %s " %(tablename)
163 def createtable(self, tablename ):
165 Creates the specifed table. Uses the global dictionnary holding the tablenames and
170 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)
171 SlabBase.metadata.create_all(slab_engine)
175 def update_job(self, hrn, job_id= None, nodes = None ):
176 slice_rec = slab_dbsession.query(SliceSenslab).filter_by(slice_hrn = hrn).first()
177 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES update_job slice_rec %s"%(slice_rec)
178 if job_id is not None:
179 slice_rec.oar_job_id = job_id
180 if nodes is not None :
181 slice_rec.node_list = nodes
182 slab_dbsession.commit()
184 def find (self, name = None, filter_dict = None):
185 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_dict %s"%(filter_dict)
187 #Filter_by can not handle more than one argument, hence these functions
188 def filter_id_user(query, user_id):
189 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_id_user"
190 return query.filter_by(record_id_user = user_id)
192 def filter_job(query, job):
193 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_job "
194 return query.filter_by(oar_job_id = job)
196 def filer_id_slice (query, id_slice):
197 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filer_id_slice"
198 return query.filter_by(record_id_slice = id_slice)
200 def filter_slice_hrn(query, hrn):
201 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find filter_slice_hrn"
202 return query.filter_by(slice_hrn = hrn)
205 extended_filter = {'record_id_user': filter_id_user,
206 'oar_job_id':filter_job,
207 'record_id_slice': filer_id_slice,
208 'slice_hrn': filter_slice_hrn}
210 Q = slab_dbsession.query(SliceSenslab)
212 if filter_dict is not None:
213 for k in filter_dict:
215 newQ= extended_filter[k](Q, filter_dict[k])
218 print>>sys.stderr, "\r\n \t\t FFFFFFFFFFFFFFFFUUUUUUUUFUFUFU!!!!!!!!"
219 print>>sys.stderr, " HEEEEEEEEEEEEY %s " %(Q.first())
221 print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find rec %s" %(rec)
222 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]))
224 ##for rec in Q.all():
225 #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])))
226 #print>>sys.stderr, " \r\n \r\n \t SLABPOSTGRES find reclist %s" %(reclist)
232 from sfa.util.config import Config
234 slab_alchemy= SlabDB(Config())
235 slab_engine=slab_alchemy.slab_engine
236 slab_dbsession=slab_alchemy.session()