forked from mozilla/datazilla
/
model.py
143 lines (104 loc) · 4.45 KB
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model.py
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#####
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
#####
import sys
import os
import re
from django.conf import settings
from datasource.bases.BaseHub import BaseHub
from datasource.hubs.MySQL import MySQL
class Model:
projectHub = {}
databaseSources = {}
@staticmethod
def loadvars():
#####
#Only load the database sources once when the module
#is imported
#####
if not Model.projectHub:
Model.DATAZILLA_DATABASE_NAME = settings.DATAZILLA_DATABASE_NAME
Model.DATAZILLA_DATABASE_USER = settings.DATAZILLA_DATABASE_USER
Model.DATAZILLA_DATABASE_PASSWORD = settings.DATAZILLA_DATABASE_PASSWORD
Model.DATAZILLA_DATABASE_HOST = settings.DATAZILLA_DATABASE_HOST
Model.DATAZILLA_DATABASE_PORT = settings.DATAZILLA_DATABASE_PORT
####
#Configuration of datasource hub:
# 1 Build the datasource struct
# 2 Add it to the BaseHub
# 3 Instantiate a MySQL hub for all derived classes
####
Model.rootPath = os.path.dirname(os.path.abspath(__file__))
dataSource = { Model.DATAZILLA_DATABASE_NAME :
{ "hub":"MySQL",
"master_host":
{ "host":Model.DATAZILLA_DATABASE_HOST,
"user":Model.DATAZILLA_DATABASE_USER,
"passwd":Model.DATAZILLA_DATABASE_PASSWORD
},
"default_db":Model.DATAZILLA_DATABASE_NAME,
"procs": ["%s/%s" % (Model.rootPath,
'sources.json')]
} }
BaseHub.addDataSource(dataSource)
dzHub = MySQL(Model.DATAZILLA_DATABASE_NAME)
Model.databaseSources = dzHub.execute(proc='sources.get_datasources',
key_column='project',
return_type='dict')
Model.loadProjectHub(Model.databaseSources)
@staticmethod
def loadProjectHub(databaseSources):
for s in databaseSources:
project = databaseSources[s]['project']
dataSource = { project :
{ "hub":"MySQL",
"master_host":{"host":databaseSources[s]['host'],
"user":Model.DATAZILLA_DATABASE_USER,
"passwd":Model.DATAZILLA_DATABASE_PASSWORD},
"default_db":databaseSources[s]['name'],
"procs": ["%s/%s" % (Model.rootPath, 'graphs.json')]
} }
BaseHub.addDataSource(dataSource)
hub = MySQL( project )
Model.projectHub[ project ] = hub
def __init__(self, project, sqlFileName):
self.project = project
self.sqlFileName = sqlFileName
self.DEBUG = settings.DEBUG
#####
#Set the hub to the requested project
#####
try:
self.dhub = MySQL( self.project )
except KeyError:
allProjects = ','.join( Model.projectHub.keys() )
m = '%s project name is not recognized, available projects include: %s' % (self.project, allProjects)
raise KeyError(m)
def setData(self, statement, placeholders):
self.dhub.execute(proc='graphs.inserts.' + statement,
debug_show=self.DEBUG,
placeholders=placeholders)
def setDataAndGetId(self, statement, placeholders):
self.setData(statement, placeholders)
idIter = self.dhub.execute(proc='graphs.selects.get_last_insert_id',
debug_show=self.DEBUG,
return_type='iter')
return idIter.getColumnData('id')
def isNumber(self, s):
try:
float(s)
return True
except ValueError:
return False
def buildReplacement(self, colData):
rep = "AND "
for key in colData:
if len(colData[key]) > 0:
rep += key + ' IN (' + colData[key] + ') AND '
rep = re.sub('AND\s+$', '', rep)
return rep
def disconnect(self):
self.dhub.disconnect()
Model.loadvars()