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nanowsgi
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aggiunta prima versione di accesso al db via decoratore

db_access
Andrea Papotti 13 vuotta sitten
vanhempi
2af1a20854
commit
e43bb65e96
5 muutettua tiedostoa jossa 339 lisäystä ja 217 poistoa
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  1. +63
    -5
      decorators.py
  2. +17
    -3
      dispatch_wsgi.py
  3. +258
    -173
      nanowsgi.wpu
  4. +1
    -0
      static/index.html
  5. +0
    -36
      test_mysql.py

+ 63
- 5
decorators.py Näytä tiedosto

@@ -9,16 +9,74 @@ from functools import partial
class WSGITemplate( object ):
__metaclass__ = Singleton

def __init__( self, basedir=None ):
def __init__( self, basedir='' ):
import os
self.__basedir = os.path.normpath( os.path.join( os.path.split(__file__)[0], basedir ) ) + '/'
self.__fallback_template = \
"<h1> NO TEMPLATE DEFINED </h1>\n" \
"{{ from pprint import pformat }}" \
"<pre>{{ = pformat( { k:v for k,v in locals().iteritems() if k not in ('NOESCAPE','__builtins__','pformat','response') }, width=132 ) }}</pre>\n\n"


def template(self, filename=None ):
def template( self, filename=None ):
def real_decorator( wsgi_application ):
def wrapper( environ, start_response ):
environ[ 'template' ] = partial( render, filename= self.__basedir + filename )
environ[ 'basedir' ] = self.__basedir
if filename:
environ[ 'template' ] = partial( render, filename=self.__basedir + filename )
else:
environ[ 'template' ] = partial( render, content=self.__fallback_template )
return wsgi_application( environ, start_response )

return wrapper
return real_decorator

return real_decorator


class WSGIMySQL( object ):
__metaclass__ = Singleton

def __init__( self, dsn, *args ):
import MySQLdb

self.__dsn = dsn
self.__pool = [ self.__newconn() ]
self.__dict_cursor = MySQLdb.cursors.DictCursor


def __newconn( self ):
import MySQLdb

return MySQLdb.connect(
host = self.__dsn["HOST"],
user = self.__dsn["USER"],
passwd = self.__dsn["PASSWORD"],
db = self.__dsn["DB"]
)

def db( self, *args ):
def real_decorator( wsgi_application ):
def wrapper( environ, start_response ):
try:
conn = self.__pool.pop( 0 )
except IndexError:
conn = self.__newconn()

cur = conn.cursor( self.__dict_cursor )

environ['mysql.cur'] = cur

try:
for item in wsgi_application( environ, start_response ):
yield item
finally:
conn.commit()
self.__pool.append( conn )

return wrapper

return real_decorator


def __del__( self ):
for conn in self.__pool:
conn.close()

+ 17
- 3
dispatch_wsgi.py Näytä tiedosto

@@ -17,7 +17,21 @@ from decorators import WSGITemplate
WSGITemplate( basedir='views' )

#
# importazione handler
# inizializzazione connessione al db ( mysql )
#
from decorators import WSGIMySQL
WSGIMySQL(
dsn = dict(
DB = "mywiki",
HOST = "localhost",
USER = "corso",
PASSWORD = "pwdcorso"
)
)


#
# importazione handler definiti esternamente
#
from router import WSGIRouter, WSGISmartRouter

@@ -50,12 +64,12 @@ def fallback( environ, start_response ):
#
# definiamo gli handler per le url che vogliamo servire
#
from test_mysql import simple_mysql
################################################################################ from test_mysql import simple_mysql

handlers = (
( r'/', index ),
( r'/hello', hello ),
( r'/mysql', simple_mysql ),
############################################################################ ( r'/mysql', simple_mysql ),
)




+ 258
- 173
nanowsgi.wpu Näytä tiedosto

@@ -4,7 +4,7 @@
# Wing IDE project file : User-specific branch #
##################################################################
[user attributes]
console.id-seed = 2
console.id-seed = 6
console.toolbox = [{'autosave': False,
'ctype': ('cmd',
'tail -f /var/log/apache2/error.log'),
@@ -60,10 +60,13 @@ guimgr.overall-gui-state = {'windowing-policy': 'combined-window',
'tree-states': {'deep': {'column-widths': None,
'expanded-nodes': [(0,),
(1,),
(1,
0),
(2,),
(3,)],
'selected-nodes': [(3,
3)],
'selected-nodes': [(1,
0,
1)],
'top-node': (0,)}},
'tree-style': 'deep'}}),
('refactoring',
@@ -100,7 +103,7 @@ guimgr.overall-gui-state = {'windowing-policy': 'combined-window',
'primary_view_state': {'area': 'wide',
'constraint': None,
'current_pages': [6],
'notebook_display': 'normal',
'notebook_display': 'tabs only',
'notebook_percent': 0.39739413680781754,
'override_title': None,
'pagelist': [('bookmarks',
@@ -429,223 +432,300 @@ guimgr.overall-gui-state = {'windowing-policy': 'combined-window',
'expanded-nodes': [(0,)],
'selected-nodes': [],
'top-node': (0,)}})],
'primary_view_state': {'editor_states': {'bookmarks': ([[loc('../corso_python/www/wsgi/wsgi_test.py'),
{'attrib-starts': [],
'primary_view_state': {'editor_states': {'bookmarks': ([(loc('controllers/demo.py'),
{'attrib-starts': [('get',
14)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 0,
'sel-line-start': 0,
'selection_end': 148,
'selection_start': 0},
1352922666.5966339],
[loc('../corso_python/www/wsgi/sqlpooler.py'),
'sel-line': 19,
'sel-line-start': 511,
'selection_end': 535,
'selection_start': 535},
1353075633.076438),
(loc('../corso_python/www/wsgi/sqlpooler.py'),
{'attrib-starts': [('WSGISqlPoolMySQL',
4)],
'first-line': 0,
'folded-linenos': [21,
34,
67,
80],
'sel-line': 7,
'sel-line-start': 268,
'selection_end': 275,
'selection_start': 275},
1352922666.8889589],
[loc('../corso_python/www/static/index.html'),
{'attrib-starts': [],
4),
('WSGISqlPoolMySQL.__call__',
34)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 4,
'sel-line-start': 68,
'selection_end': 78,
'selection_start': 78},
1352922667.347193],
[loc('../corso_python/www/static/dispatch_wsgi.py'),
'sel-line': 54,
'sel-line-start': 1723,
'selection_end': 1739,
'selection_start': 1739},
1353075665.5788369),
(loc('../corso_python/www/static/dispatch_wsgi.py'),
{'attrib-starts': [],
'first-line': 37,
'first-line': 39,
'folded-linenos': [],
'sel-line': 51,
'sel-line-start': 1203,
'selection_end': 1249,
'selection_start': 1217},
1352922667.6854961],
[loc('../corso_python/www/static/dispatch_fcgi.py'),
{'attrib-starts': [],
'first-line': 25,
'sel-line': 45,
'sel-line-start': 1075,
'selection_end': 1196,
'selection_start': 1075},
1353075682.988924),
(loc('decorators.py'),
{'attrib-starts': [('WSGITemplate',
8),
('WSGITemplate.__init__',
11)],
'first-line': 22,
'folded-linenos': [],
'sel-line': 41,
'sel-line-start': 913,
'selection_end': 945,
'selection_start': 913},
1352922668.0699551],
[loc('../corso_python/www/static/.htaccess'),
'sel-line': 15,
'sel-line-start': 430,
'selection_end': 461,
'selection_start': 461},
1353075698.5145061),
(loc('dispatch_wsgi.py'),
{'attrib-starts': [],
'first-line': 34,
'first-line': 14,
'folded-linenos': [],
'sel-line': 54,
'sel-line-start': 1157,
'selection_end': 1157,
'selection_start': 1157},
1352922668.490283],
[loc('../corso_python/www/protected/info_handler.py'),
{'attrib-starts': [('info',
22)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 34,
'sel-line-start': 1127,
'selection_end': 1151,
'selection_start': 1127},
1352922668.901685],
[loc('../corso_python/www/protected/hello_handler.py'),
{'attrib-starts': [('hello',
18)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 46,
'sel-line-start': 1148,
'selection_end': 1213,
'selection_start': 1153},
1352922669.3464761],
[loc('../corso_python/www/protected/fallback_handler.py'),
'sel-line': 29,
'sel-line-start': 601,
'selection_end': 601,
'selection_start': 601},
1353075701.1062429),
[loc('sql.py'),
{'attrib-starts': [],
'first-line': 0,
'folded-linenos': [],
'sel-line': 3,
'sel-line-start': 81,
'selection_end': 108,
'selection_end': 164,
'selection_start': 81},
1352922669.920784],
[loc('../corso_python/www/cgi/dispatch_cgi.py'),
1353075751.1481929],
(loc('../corso_python/www/static/dispatch_wsgi.py'),
{'attrib-starts': [],
'first-line': 39,
'folded-linenos': [],
'sel-line': 45,
'sel-line-start': 1075,
'selection_end': 1196,
'selection_start': 1075},
1353075829.8857551),
(loc('../corso_python/www/wsgi/sqlpooler.py'),
{'attrib-starts': [('WSGISqlPoolMySQL',
4),
('WSGISqlPoolMySQL.__call__',
34)],
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'sel-line': 5,
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'selection_start': 164},
1352922670.2010989],
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'sel-line': 54,
'sel-line-start': 1723,
'selection_end': 1739,
'selection_start': 1739},
1353075837.216579),
(loc('dispatch_wsgi.py'),
{'attrib-starts': [],
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'first-line': 59,
'folded-linenos': [],
'sel-line': 29,
'sel-line-start': 601,
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'selection_start': 601},
1353075862.859385),
(loc('test_mysql.py'),
{'attrib-starts': [('simple_mysql',
3)],
'first-line': 15,
'folded-linenos': [],
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'sel-line-start': 467,
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1352922670.649184],
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1353075879.6448979),
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'sel-line': 27,
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1352970566.1362541),
(loc('static/index.html'),
{'attrib-starts': [],
'first-line': 0,
'sel-line': 26,
'sel-line-start': 547,
'selection_end': 547,
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1353075896.5156269),
(loc('decorators.py'),
{'attrib-starts': [('WSGIMySQL',
34),
('WSGIMySQL.db',
51),
('WSGIMySQL.db.real_decorator',
52),
('WSGIMySQL.db.real_decorator.wrapper',
53)],
'first-line': 42,
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1352970992.829721),
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1352971025.356674),
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1353078144.7990141),
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1353078225.3298531]],
19),
'current-loc': loc('static/index.html'),
'editor-states': {loc('controllers/demo.py'): {'attrib-starts': [('g'\
'current-loc': loc('controllers/demo/sql.py'),
'editor-states': {loc('../corso_python/www/static/dispatch_wsgi.py'): {''\
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'first-line': 39,
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'selection_start': 1075},
loc('../corso_python/www/wsgi/sqlpooler.py'): {'at'\
'trib-starts': [('WSGISqlPoolMySQL',
4),
('WSGISqlPoolMySQL.__call__',
34)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 54,
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loc('controllers/demo.py'): {'attrib-starts': [('g'\
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loc('dispatch_wsgi.py'): {'attrib-starts': [],
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'sel-line': 19,
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'selection_end': 535,
'selection_start': 535},
loc('controllers/demo/due.py'): {'attrib-starts': [],
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'sel-line-start': 0,
'selection_end': 0,
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loc('controllers/demo/sql.py'): {'attrib-starts': [],
'first-line': 9,
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'sel-line': 10,
'sel-line-start': 205,
'selection_end': 228,
'selection_start': 228},
loc('decorators.py'): {'attrib-starts': [('WSGIMyS'\
'QL',
34),
('WSGIMySQL.db',
55),
('WSGIMySQL.db.real_decorator',
56),
('WSGIMySQL.db.real_decorator.wrapper',
57)],
'first-line': 30,
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'sel-line': 63,
'sel-line-start': 1985,
'selection_end': 2038,
'selection_start': 2038},
loc('dispatch_wsgi.py'): {'attrib-starts': [('fall'\
'back',
54)],
'first-line': 0,
'folded-linenos': [],
'sel-line': 61,
'sel-line-start': 1549,
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'selection_start': 1554},
loc('static/index.html'): {'attrib-starts': [],
'first-line': 0,
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'sel-line': 11,
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'selection_end': 394,
'selection_start': 394}},
'sel-line': 14,
'sel-line-start': 539,
'selection_end': 590,
'selection_start': 590}},
'has-focus': True},
'open_files': [u'controllers/demo.py',
'open_files': [u'../corso_python/www/static/dispatch_wsgi.py',
u'../corso_python/www/wsgi/sqlpooler.py',
u'controllers/demo.py',
u'controllers/demo/due.py',
u'decorators.py',
u'dispatch_wsgi.py',
u'static/index.html']},
u'static/index.html',
u'controllers/demo/sql.py']},
'saved_notebook_display': None,
'split_percents': {0: 0.33189122373300373},
'splits': 1,
@@ -656,10 +736,15 @@ guimgr.overall-gui-state = {'windowing-policy': 'combined-window',
'splits': 2,
'tab_location': 'left',
'user_data': {}},
'window-alloc': (38,
40,
1322,
964)}]}
guimgr.recent-documents = [loc('static/index.html'),
'window-alloc': (10,
33,
1639,
965)}]}
guimgr.recent-documents = [loc('controllers/demo/sql.py'),
loc('static/index.html'),
loc('dispatch_wsgi.py'),
loc('controllers/demo.py')]
loc('decorators.py'),
loc('../corso_python/www/wsgi/sqlpooler.py'),
loc('../corso_python/www/static/dispatch_wsgi.py'),
loc('controllers/demo.py'),
loc('controllers/demo/due.py')]

+ 1
- 0
static/index.html Näytä tiedosto

@@ -12,6 +12,7 @@
<li><a href="/mysql">test MYSQL access</a></li>
<li><a href="/demo">test autorouting</a></li>
<li><a href="/demo/due">test autorouting (longest path possible)</a></li>
<li><a href="/demo/sql">test sql access</a></li>
</ul>
<div style="position:fixed; bottom:0; right:0;">
<img src="/favicon.ico" style="vertical-align: middle;">


+ 0
- 36
test_mysql.py Näytä tiedosto

@@ -1,36 +0,0 @@
import MySQLdb
from config import config

def simple_mysql( environ, start_response ):
#
# collegamento al mysql
#
# for more options see:
# http://mysql-python.sourceforge.net/MySQLdb.html#introduction
conn = MySQLdb.connect(
host = config['MYSQL_HOST'],
user = config['MYSQL_USER'],
passwd = config['MYSQL_PASSWORD'],
db = config['MYSQL_DB']
)

#
# esecuzione query
#
cur = conn.cursor( MySQLdb.cursors.DictCursor )
cur.execute( 'SHOW tables;' )

#
# recupero record e generazione html
#

start_response( '200 OK', [('Content-Type', 'text/plain')] )

for record in cur.fetchall():
yield "\n" + str( record )

#
# chiusura connessione al mysql
#
conn.close()


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