source: mauRepo/MolesManager/trunk/src/libs/migration/client.py @ 8358

Subversion URL: http://proj.badc.rl.ac.uk/svn/ndg/mauRepo/MolesManager/trunk/src/libs/migration/client.py@8358
Revision 8358, 3.2 KB checked in by mnagni, 7 years ago (diff)

Major refactoring about migration (now handles better create/update, even if the single updates have to be quite fully implemented)
Added the connection pool from SQLAlchemy

Line 
1'''
2BSD Licence
3Copyright (c) 2012, Science & Technology Facilities Council (STFC)
4All rights reserved.
5
6Redistribution and use in source and binary forms, with or without modification,
7are permitted provided that the following conditions are met:
8
9    * Redistributions of source code must retain the above copyright notice,
10        this list of conditions and the following disclaimer.
11    * Redistributions in binary form must reproduce the above copyright notice,
12        this list of conditions and the following disclaimer in the documentation
13        and/or other materials provided with the distribution.
14    * Neither the name of the Science & Technology Facilities Council (STFC)
15        nor the names of its contributors may be used to endorse or promote
16        products derived from this software without specific prior written permission.
17
18THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
22BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
23OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29Created on 9 Nov 2011
30
31@author: Maurizio Nagni
32'''
33from libs.migration.processor.loadResources import LoadResources
34from libs.migration.processor.migrationProcess import MigrationProcess
35
36import threading
37import time
38from threading import Timer
39from libs.migration.processor.EPBRepo import EPBRepo
40
41class MigrationThread(threading.Thread):
42    """
43        Constructs a scheduler for the Moles2 to Moles3 migration.
44        Only one instance should be running for each python interpreter
45        @param interval: define the minimal time, in seconds, between an execution and the successive.
46        If the current migration run takes more than the defined interval the next will starts
47        as soon the previous ends.         
48    """
49   
50    def __init__(self, moles3EPB, migrationEPB, infodbEPB, interval=600):
51        self.epbRepo = EPBRepo(moles3EPB, migrationEPB, infodbEPB)
52       
53        threading.Thread.__init__(self)
54        self._doRun = True   
55        self.interval = interval
56   
57    def stop(self):
58        self._doRun = False
59   
60    def run(self):
61        while self._doRun:
62            startTime = (int)(time.time())
63            timer = Timer(5, self._migrate, ())
64            timer.start()
65            timer.join()
66            diffTime = startTime + self.interval - (int)(time.time()) 
67            if diffTime > 0:
68                time.sleep(diffTime)
69   
70    def _printTime(self):
71        print "From print_time", time.time()   
72
73    def _migrate(self):
74        lr = LoadResources(self.epbRepo)
75        ex = lr.process()
76        for e in ex:
77            print e
78
79        mp = MigrationProcess(self.epbRepo)
80        ex = mp.process()
81        for e in ex:
82            print e
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