294 lines
8.7 KiB
Python
294 lines
8.7 KiB
Python
import logging
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import sys
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import datetime
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import json
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try:
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from sqlalchemy import create_engine, Column, Integer, String, DateTime, Boolean
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy.ext.declarative import declarative_base
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except:
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sys.exit("No SQLAlchemy.")
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logging.basicConfig(level=logging.INFO)
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STATE_ACTIVE = 0
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STATE_RUN = 1
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STATE_DOWN = 2
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PAGESIZE = 10
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"""
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This class describe a single Record (Rec() class) and the
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records manager (RecDB() class)
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"""
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Base = declarative_base()
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"""
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Rec entry
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"""
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class Rec(Base):
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__tablename__ = 'rec'
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id = Column(Integer, primary_key=True)
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recid = Column(String)
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name = Column(String, nullable = True)
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starttime = Column(DateTime, nullable = True)
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endtime = Column(DateTime, nullable = True)
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active = Column(Boolean, default = True)
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def __init__(self, recid="", name="", starttime=None, endtime=None, asjson=""):
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self.error = 0
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self.job = None
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if len(asjson) == 0:
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self.name = name
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self.starttime = starttime
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self.endtime = endtime
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self.recid = recid
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else:
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#try:
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# dec = json.loads( unicode(asjson) )
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# dec = yaml.load( asjson )
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dec = json.dumps( asjson )
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# except:
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# self.error = 0
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print("dec %s %s" % (dec,type(dec)))
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print("asjson %s %s" % (asjson,type(asjson)))
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self.recid = asjson[0]['recid']
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self.name = asjson[0]['name']
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self.starttime = asjson[0]['starttime']
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self.endtime = asjson[0]['endtime']
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self.state = STATE_ACTIVE
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# launch the job for processing files
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def start(self):
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self.job = RecJob( self )
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def err(self):
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return self.error
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def set_run(self):
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self.active = STATE_RUN
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def set_done(self):
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self.active = STATE_DOWN
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def __repr__(self):
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return "<Rec(id:'%s',recid:'%s',name:'%s',Start: '%s',End: '%s',Active: '%s')>" \
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% (self.id, self.recid, self.name, self.starttime, self.endtime, self.active)
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""" ************
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RecDB
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************ """
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class RecDB:
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def __init__(self):
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self.engine = create_engine('sqlite:///techrec.db', echo=False)
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self.conn = self.engine.connect()
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logging.getLogger('sqlalchemy.engine').setLevel(logging.FATAL)
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logging.getLogger('sqlalchemy.engine.base.Engine').setLevel(logging.FATAL)
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logging.getLogger('sqlalchemy.dialects').setLevel(logging.FATAL)
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logging.getLogger('sqlalchemy.pool').setLevel(logging.FATAL)
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logging.getLogger('sqlalchemy.orm').setLevel(logging.FATAL)
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Base.metadata.create_all(self.engine) # create Database
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Session = sessionmaker(bind=self.engine)
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self.session = Session()
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self.err = ""
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self.recordtimeformat = "%Y/%m/%d %H:%M:%S"
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def add(self, simplerecord):
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print self.session.add( simplerecord )
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self.commit()
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logging.info("New Record: %s" % simplerecord)
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return ( simplerecord )
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""""
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UPDATE RECORD
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"""
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def update(self, recid, rec):
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_rlist = self._search(recid=recid)
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if not len(_rlist) == 1:
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return False
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logging.info("DB:: Update request %s:%s " % (recid, rec))
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logging.info("DB:: Update: data before %s" % _rlist[0])
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# 2013-11-24 22:22:42
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_rlist[0].starttime = datetime.datetime.strptime(rec["starttime"], self.recordtimeformat)
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_rlist[0].endtime = datetime.datetime.strptime(rec["endtime"], self.recordtimeformat)
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_rlist[0].name = rec["name"]
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logging.info("DB:: Update: data AFTER %s" % _rlist[0])
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self.commit()
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logging.info("DB:: Update complete")
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return True
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""""
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DELETE RECORD
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"""
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def delete(self,recid):
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_rlist = self._search(recid=recid)
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if len(_rlist) == 0:
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logging.info("DB: Delete: no record found!")
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self.err = "No rec found"
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return False
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if len(_rlist) > 1:
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logging.info("DB: Delete: multilpe records found!")
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self.err = "multiple ID Found %s" % (_rlist)
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return False
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self.session.delete( _rlist[0] )
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logging.info("DB: Delete: delete complete")
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self.commit()
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return True
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def commit(self):
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logging.info("DB: Commit!!")
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self.session.commit()
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def get_all(self, page=0, page_size=PAGESIZE):
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return self._search(page=page, page_size=page_size)
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def _search(self, _id=None, name=None, recid=None, starttime=None, endtime=None, active=None, page=0, page_size=PAGESIZE):
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logging.info("DB: Search => id:%s recid:%s name:%s starttime:%s endtime=%s active=%s" % (_id,recid,name,starttime,endtime,active))
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query = self.session.query(Rec)
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if not _id == None: query = query.filter_by(id=_id)
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if not recid == None: query = query.filter_by(recid=recid)
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if not name == None: query = query.filter(Rec.name.like("%"+name+"%"))
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try:
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if not starttime == None:
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_st = datetime.datetime.strptime(starttime, self.recordtimeformat)
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query = query.filter(Rec.starttime > _st )
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except:
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logging.info("DB: search : no valid starttime")
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try:
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if not endtime == None:
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_et = datetime.datetime.strptime(endtime, self.recordtimeformat)
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query = query.filter(Rec.endtime < _et )
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except ValueError:
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logging.info("DB: search : no valid endtime")
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if not active == None: query = query.filter(Rec.active==active)
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if page_size: query = query.limit(page_size)
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if page: query = query.offset(page*page_size)
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print query
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ret = query.all()
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# print "Sending: %s" % ret
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return ret
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def get_err(self):
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print "DB error: %s" % (self.err)
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t = self.err
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self.err = ""
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return t
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"""def get_by_id(self,id):
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try:
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return self._search( _id=id )[0]
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except:
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return None
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"""
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# Just for debug
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def printall( queryres ):
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for record in queryres: print "Record: %s" % record
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# Job in thread
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class RecJob():
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def __init__(self, rec):
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print "Estraggo %s Start:%s, End:%s" % (rec.name, rec.starttime, rec.endtime)
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self.fdir = "/rec/ror/"
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self.fnameformat = "ror-%Y-%m-%d-%H-00-00.mp3"
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self.name = rec.name
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self.starttime = rec.starttime
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self.endtime = rec.endtime
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def extract(self):
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assert type(self.starttime) == type(datetime.datetime.now())
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assert type(self.endtime) == type(datetime.datetime.now())
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assert self.starttime < self.endtime
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start = self.starttime
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end = self.endtime
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while True:
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print
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print "**** From file %s take:" % ( self._get_recfile(start) )
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nexth = self._truncate(start) + datetime.timedelta(minutes=60)
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if start > self._truncate(start):
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print "FROM: %s for %s seconds" % (start - self._truncate(start), nexth - start )
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if end < self._truncate(nexth):
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print "FROM: %s for %s seconds" % (0, end - self._truncate(start) )
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else:
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print "FROM: %s for 0 to 60." % (self._get_recfile(start))
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if nexth >= end:
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print "FINITO"
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print "Start ", start, " end: ", end
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break;
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start = nexth
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def _truncate(self, mytime):
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return datetime.datetime(mytime.year,mytime.month,mytime.day,mytime.hour)
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def _get_recfile(self, mytime):
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return "%s/%s" % (self.fdir,mytime.strftime(self.fnameformat))
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def __repr__(self):
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return "%s: %s (%s) => %s (%s)" % ( self.name, self.starttime, type(self.starttime) ,self.endtime, type(self.endtime))
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"""
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TEST
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"""
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if __name__ == "__main__":
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db = RecDB()
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_mytime = datetime.datetime(2014,05,23,15,12,17)
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_endtime = datetime.datetime(2014,05,24,17,45,17)
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a = Rec(name="Mimmo1", starttime=_mytime, endtime=_endtime)
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j = RecJob( a )
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print (j)
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j.extract()
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printall( db._search() )
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sys.exit("End test job")
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# a = Rec(name="Mimmo1", starttime=_mytime, endtime=None)
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print "Aggiunto", db.add( a )
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printall( db.get_all(page_size=5,page=0) )
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print "Mimmo "
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printall( db._search(name="Mimmo1"))
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print "Search"
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printall( db._search(name="Mimmo1",starttime=datetime.datetime(2014,05,24,15,16,1) ))
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a = db.get_by_id(5)
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a.start()
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db.delete(1)
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db.delete(2)
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db.delete(4)
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db.delete(1)
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printall( db._search() )
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