How to store uScopy data in MondoDB
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Revision as of 20:07, 18 January 2011 by Dhanannjay.deo (talk | contribs)
Server side code
Python code <source lang="python"> """
Decodes the path info and fetches the corresponding tile from pymongo
""" import pymongo import sys
sys.path.append('/var/www-dj/')
from mongo import m
def application(environ, start_response):
""" The WSGI test application """
def error(error_msg):
status = "200 OK"
response_headers = [('Content-type', 'text/plain'),
('Content-Length', str(len(error_msg)))]
start_response(status, response_headers)
return [error_msg]
# emit status / headers
db = m.conn['clay1']
#print 'starting request ..'
try:
str2 = environ['PATH_INFO']
except:
str2 = '/tiles3.py/n1/t.jpg'
path = str2.split('/')
if len(path) != 3:
#incorrect syntax
return error(str(path))
col = db[path[1]]
res = col.find_one({"name" : path[2]})
m.conn.end_request()
if res == None:
return error('Item not found in database ..')
# Create the response headers
status = "200 OK"
response_headers = [('Content-type', 'image/jpeg'),
('Content-Length', str(len(res['file'])))]
start_response(status, response_headers)
#print 'Started response'
return [str(res['file'])]
#except:
if __name__ == '__main__':
# this runs when script is started directly from commandline
try:
# create a simple WSGI server and run the application
from wsgiref import simple_server
print "Running test application - point your browser at http://localhost:8000/ ..."
httpd = simple_server.WSGIServer((, 8000), simple_server.WSGIRequestHandler)
httpd.set_app(application)
httpd.serve_forever()
except ImportError:
# wsgiref not installed, just output html to stdout
1,1 Top
</source>
Mongo module manages connection pool internally. Another simple script is used to recreate indexes after data has been added.
