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main.py
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main.py
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#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#imports (woo!)
#==============================================================================
import os
import time
import datetime
import urllib
import urllib2
import json
import random
import webapp2
import jinja2
from google.appengine.ext import db, blobstore
from google.appengine.ext.webapp import blobstore_handlers
import utils
#boilerplate (yay boilerplate!)
#==============================================================================
templateDir = os.path.join(os.path.dirname(__file__), 'templates')
jinja_env = jinja2.Environment(loader = jinja2.FileSystemLoader(templateDir),
autoescape = True)
#request handler helper class
#==============================================================================
class Handler(webapp2.RequestHandler):
def write(self, *a, **kw):
self.response.out.write(*a, **kw)
def render_str(self, template, **params):
t = jinja_env.get_template(template)
return t.render(params)
def render(self, template, **kw):
self.write(self.render_str(template, **kw))
#models
#==============================================================================
class Patron(db.Model):
patron_name = db.TextProperty()
joined_date = db.DateTimeProperty(auto_now_add = True)
class DataSeries(db.Model):
blob_key = db.TextProperty()
json_data = db.BlobProperty()
name = db.TextProperty()
#handlers
#==============================================================================
class IndexHandler(Handler):
def get(self):
upload_url = blobstore.create_upload_url('/upload')
blobs = blobstore.BlobInfo.all()
blob_infos = []
for blob in blobs:
blob_infos.append({'filename': blob.filename,
'key': str(blob.key())
})
self.render('index.html', upload_url=upload_url, blobs=blob_infos)
class UploadHandler(blobstore_handlers.BlobstoreUploadHandler):
def post(self):
self.response.write('Chugging away...')
upload_files = self.get_uploads('file')
blob_info = upload_files[0]
blob_reader = blobstore.BlobReader(str(blob_info.key()))
row_dict = utils.readBlobCsv(blob_reader)
ds = DataSeries(blob_key=str(blob_info.key()),
json_data=json.dumps(row_dict),
name=blob_info.filename)
ds.put()
self.redirect('/')
class ServeHandler(blobstore_handlers.BlobstoreDownloadHandler):
def get(self, resource):
resource = str(urllib.unquote(resource))
blob_info = blobstore.BlobInfo.get(resource)
self.send_blob(blob_info)
class PlotHandler(Handler):
def get(self, blob_key):
blob_reader = blobstore.BlobReader(blob_key)
parsed = utils.readBlobCsv(blob_reader)
self.write(parsed)
class DataHandler(Handler):
def get(self, blob_key):
blob_reader = blobstore.BlobReader(blob_key)
row_dict = utils.readBlobCsv(blob_reader)
self.write(json.dumps(row_dict))
#redirects
#==============================================================================
app = webapp2.WSGIApplication([
('/', IndexHandler),
('/upload', UploadHandler),
('/serve/([^/]+)?', ServeHandler),
('/plot/([^/]+)?', PlotHandler),
('/load/([^/]+)?', DataHandler)
], debug=True)