Arachnid/app.yaml

## app.yaml
application: filehangar
version: live
runtime: python
api_version: 1

handlers:
- url: /remote_api
  script: $PYTHON_LIB/google/appengine/ext/remote_api/handler.py
  login: admin

- url: /_ah/queue/deferred
  script: $PYTHON_LIB/google/appengine/ext/deferred/deferred.py
  login: admin

- url: /.*
  script: handler.py

## handler.py
from google.appengine.api import users
from google.appengine.ext import blobstore
from google.appengine.ext import db
from google.appengine.ext import webapp
from google.appengine.ext.webapp import blobstore_handlers
from google.appengine.ext.webapp import template
from google.appengine.ext.webapp import util

import os


class FileInfo(db.Model):
  blob = blobstore.BlobReferenceProperty(required=True)
  uploaded_by = db.UserProperty(required=True)
  uploaded_at = db.DateTimeProperty(required=True, auto_now_add=True)


class BaseHandler(webapp.RequestHandler):
  def render_template(self, file, template_args):
    path = os.path.join(os.path.dirname(__file__), "templates", file)
    self.response.out.write(template.render(path, template_args))


class FileUploadFormHandler(BaseHandler):
  @util.login_required
  def get(self):
    self.render_template("upload.html", {
        'form_url': blobstore.create_upload_url('/upload'),
        'logout_url': users.create_logout_url('/'),
    })


class FileUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
  def post(self):
    blob_info = self.get_uploads()[0]
    if not users.get_current_user():
      blob_info.delete()
      self.redirect(users.create_login_url("/"))
      return

    file_info = FileInfo(blob=blob_info.key(),
                         uploaded_by=users.get_current_user())
    db.put(file_info)
    self.redirect("/file/%d" % (file_info.key().id(),))


class FileInfoHandler(BaseHandler):
  def get(self, file_id):
    file_info = FileInfo.get_by_id(long(file_id))
    if not file_info:
      self.error(404)
      return
    self.render_template("info.html", {
        'file_info': file_info,
        'logout_url': users.create_logout_url('/'),
    })


class FileDownloadHandler(blobstore_handlers.BlobstoreDownloadHandler):
  def get(self, file_id):
    file_info = FileInfo.get_by_id(long(file_id))
    if not file_info or not file_info.blob:
      self.error(404)
      return
    self.send_blob(file_info.blob, save_as=True)


application = webapp.WSGIApplication([
    ('/', FileUploadFormHandler),
    ('/upload', FileUploadHandler),
    ('/file/([0-9]+)', FileInfoHandler),
    ('/file/([0-9]+)/download', FileDownloadHandler),
])


def main():
  util.run_wsgi_app(application)


if __name__ == '__main__':
  main()


## info.html
<html>
<head>
  <title>File Hangar: File information</title>
</head>
<body>
  <p style="float: right"><a href="{{logout_url}}">Log Out</a></p>
  <h1>File information</h1>
  <table>
    <tr><th>Filename</th><td>{{file_info.blob.filename}}</td></tr>
    <tr><th>Size</th><td>{{file_info.blob.size}} bytes</td></tr>
    <tr><th>Uploaded</th><td>{{file_info.uploaded_at}}</td></tr>
    <tr><th>Uploaded by</th><td>{{file_info.uploaded_by}}</td></tr>
    <tr><th>Content Type</th><td>{{file_info.blob.content_type}}</td></tr>
  </table>

  <p><a href="/file/{{file_info.key.id}}/download">Download this file</a></p>
</body>
</html>

## upload.html
<html>
<head>
  <title>File Hangar: Upload file</title>
</head>
<body>
  <p style="float: right"><a href="{{logout_url}}">Log Out</a></p>
  <h1>Upload a file to App Engine File Hangar</h1>
  <form method="POST" action="{{form_url}}" enctype="multipart/form-data">
    <input type="file" name="file" /><br />
    <input type="submit" value="Upload" />
  </form>
</body>
</html>
	application: filehangar
	version: live
	runtime: python
	api_version: 1

	handlers:
	- url: /remote_api
	script: $PYTHON_LIB/google/appengine/ext/remote_api/handler.py
	login: admin

	- url: /_ah/queue/deferred
	script: $PYTHON_LIB/google/appengine/ext/deferred/deferred.py
	login: admin

	- url: /.*
	script: handler.py
	from google.appengine.api import users
	from google.appengine.ext import blobstore
	from google.appengine.ext import db
	from google.appengine.ext import webapp
	from google.appengine.ext.webapp import blobstore_handlers
	from google.appengine.ext.webapp import template
	from google.appengine.ext.webapp import util

	import os


	class FileInfo(db.Model):
	blob = blobstore.BlobReferenceProperty(required=True)
	uploaded_by = db.UserProperty(required=True)
	uploaded_at = db.DateTimeProperty(required=True, auto_now_add=True)


	class BaseHandler(webapp.RequestHandler):
	def render_template(self, file, template_args):
	path = os.path.join(os.path.dirname(__file__), "templates", file)
	self.response.out.write(template.render(path, template_args))


	class FileUploadFormHandler(BaseHandler):
	@util.login_required
	def get(self):
	self.render_template("upload.html", {
	'form_url': blobstore.create_upload_url('/upload'),
	'logout_url': users.create_logout_url('/'),
	})


	class FileUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
	def post(self):
	blob_info = self.get_uploads()[0]
	if not users.get_current_user():
	blob_info.delete()
	self.redirect(users.create_login_url("/"))
	return

	file_info = FileInfo(blob=blob_info.key(),
	uploaded_by=users.get_current_user())
	db.put(file_info)
	self.redirect("/file/%d" % (file_info.key().id(),))


	class FileInfoHandler(BaseHandler):
	def get(self, file_id):
	file_info = FileInfo.get_by_id(long(file_id))
	if not file_info:
	self.error(404)
	return
	self.render_template("info.html", {
	'file_info': file_info,
	'logout_url': users.create_logout_url('/'),
	})


	class FileDownloadHandler(blobstore_handlers.BlobstoreDownloadHandler):
	def get(self, file_id):
	file_info = FileInfo.get_by_id(long(file_id))
	if not file_info or not file_info.blob:
	self.error(404)
	return
	self.send_blob(file_info.blob, save_as=True)


	application = webapp.WSGIApplication([
	('/', FileUploadFormHandler),
	('/upload', FileUploadHandler),
	('/file/([0-9]+)', FileInfoHandler),
	('/file/([0-9]+)/download', FileDownloadHandler),
	])


	def main():
	util.run_wsgi_app(application)


	if __name__ == '__main__':
	main()
	<html>
	<head>
	<title>File Hangar: File information</title>
	</head>
	<body>
	<p style="float: right"><a href="{{logout_url}}">Log Out</a></p>
	<h1>File information</h1>
	<table>
	<tr><th>Filename</th><td>{{file_info.blob.filename}}</td></tr>
	<tr><th>Size</th><td>{{file_info.blob.size}} bytes</td></tr>
	<tr><th>Uploaded</th><td>{{file_info.uploaded_at}}</td></tr>
	<tr><th>Uploaded by</th><td>{{file_info.uploaded_by}}</td></tr>
	<tr><th>Content Type</th><td>{{file_info.blob.content_type}}</td></tr>
	</table>

	<p><a href="/file/{{file_info.key.id}}/download">Download this file</a></p>
	</body>
	</html>
	<html>
	<head>
	<title>File Hangar: Upload file</title>
	</head>
	<body>
	<p style="float: right"><a href="{{logout_url}}">Log Out</a></p>
	<h1>Upload a file to App Engine File Hangar</h1>
	<form method="POST" action="{{form_url}}" enctype="multipart/form-data">
	<input type="file" name="file" /><br />
	<input type="submit" value="Upload" />
	</form>
	</body>
	</html>