#!/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.
#
"""Simple datastore view and interactive console, for use in dev_appserver."""
import cgi
import csv
import cStringIO
import datetime
import logging
import math
import mimetypes
import os
import os.path
import pickle
import pprint
import random
import sys
import time
import traceback
import types
import urllib
import urlparse
import wsgiref.handlers
try:
from google.appengine.cron import groctimespecification
from google.appengine.api import croninfo
except ImportError:
HAVE_CRON = False
else:
HAVE_CRON = True
from google.appengine.api import apiproxy_stub_map
from google.appengine.api import datastore
from google.appengine.api import datastore_admin
from google.appengine.api import datastore_types
from google.appengine.api import datastore_errors
from google.appengine.api import memcache
from google.appengine.api.labs import taskqueue
from google.appengine.api import users
from google.appengine.ext import db
from google.appengine.ext import webapp
from google.appengine.ext.webapp import template
_DEBUG = True
class ImageHandler(webapp.RequestHandler):
"""Serves a static image.
This exists because we don't want to burden the user with specifying
a static file handler for the image resources used by the admin tool.
"""
PATH = '/images/.*'
def get(self):
image_name = os.path.basename(self.request.path)
content_type, encoding = mimetypes.guess_type(image_name)
if not content_type or not content_type.startswith('image/'):
logging.debug('image_name=%r, content_type=%r, encoding=%r',
image_name, content_type, encoding)
self.error(404)
return
directory = os.path.dirname(__file__)
path = os.path.join(directory, 'templates', 'images', image_name)
try:
image_stream = open(path, 'rb')
except IOError, e:
logging.error('Cannot open image %s: %s', image_name, e)
self.error(404)
return
try:
image_data = image_stream.read()
finally:
image_stream.close()
self.response.headers['Content-Type'] = content_type
self.response.out.write(image_data)
class BaseRequestHandler(webapp.RequestHandler):
"""Supplies a common template generation function.
When you call generate(), we augment the template variables supplied with
the current user in the 'user' variable and the current webapp request
in the 'request' variable.
"""
def generate(self, template_name, template_values={}):
base_path = self.base_path()
values = {
'application_name': self.request.environ['APPLICATION_ID'],
'user': users.get_current_user(),
'request': self.request,
'home_path': base_path + DefaultPageHandler.PATH,
'datastore_path': base_path + DatastoreQueryHandler.PATH,
'datastore_edit_path': base_path + DatastoreEditHandler.PATH,
'datastore_batch_edit_path': base_path + DatastoreBatchEditHandler.PATH,
'interactive_path': base_path + InteractivePageHandler.PATH,
'interactive_execute_path': base_path + InteractiveExecuteHandler.PATH,
'memcache_path': base_path + MemcachePageHandler.PATH,
'queues_path': base_path + QueuesPageHandler.PATH,
}
if HAVE_CRON:
values['cron_path'] = base_path + CronPageHandler.PATH
values.update(template_values)
directory = os.path.dirname(__file__)
path = os.path.join(directory, os.path.join('templates', template_name))
self.response.out.write(template.render(path, values, debug=_DEBUG))
def base_path(self):
"""Returns the base path of this admin app, which is chosen by the user.
The user specifies which paths map to this application in their app.cfg.
You can get that base path with this method. Combine with the constant
paths specified by the classes to construct URLs.
"""
path = self.__class__.PATH
return self.request.path[:-len(path)]
def filter_url(self, args):
"""Filters the current URL to only have the given list of arguments.
For example, if your URL is /search?q=foo&num=100&start=10, then
self.filter_url(['start', 'num']) => /search?num=100&start=10
self.filter_url(['q']) => /search?q=10
self.filter_url(['random']) => /search?
"""
queries = []
for arg in args:
value = self.request.get(arg)
if value:
queries.append(arg + '=' + urllib.quote_plus(self.request.get(arg)))
return self.request.path + '?' + '&'.join(queries)
def in_production(self):
"""Detects if app is running in production.
Returns a boolean.
"""
server_software = os.environ['SERVER_SOFTWARE']
return not server_software.startswith('Development')
class DefaultPageHandler(BaseRequestHandler):
"""Redirects to the Datastore application by default."""
PATH = '/'
def get(self):
if self.request.path.endswith('/'):
base = self.request.path[:-1]
else:
base = self.request.path
self.redirect(base + DatastoreQueryHandler.PATH)
class InteractivePageHandler(BaseRequestHandler):
"""Shows our interactive console HTML."""
PATH = '/interactive'
def get(self):
self.generate('interactive.html')
class InteractiveExecuteHandler(BaseRequestHandler):
"""Executes the Python code submitted in a POST within this context.
For obvious reasons, this should only be available to administrators
of the applications.
"""
PATH = InteractivePageHandler.PATH + '/execute'
def post(self):
save_stdout = sys.stdout
results_io = cStringIO.StringIO()
try:
sys.stdout = results_io
code = self.request.get('code')
code = code.replace("\r\n", "\n")
try:
compiled_code = compile(code, '<string>', 'exec')
exec(compiled_code, globals())
except Exception, e:
traceback.print_exc(file=results_io)
finally:
sys.stdout = save_stdout
results = results_io.getvalue()
self.generate('interactive-output.html', {'output': results})
class CronPageHandler(BaseRequestHandler):
"""Shows information about configured cron jobs in this application."""
PATH = '/cron'
def get(self, now=None):
"""Shows template displaying the configured cron jobs."""
if not now:
now = datetime.datetime.now()
values = {'request': self.request}
cron_info = _ParseCronYaml()
values['cronjobs'] = []
values['now'] = str(now)
if cron_info and cron_info.cron:
for entry in cron_info.cron:
job = {}
values['cronjobs'].append(job)
if entry.description:
job['description'] = entry.description
else:
job['description'] = '(no description)'
if entry.timezone:
job['timezone'] = entry.timezone
job['url'] = entry.url
job['schedule'] = entry.schedule
schedule = groctimespecification.GrocTimeSpecification(entry.schedule)
matches = schedule.GetMatches(now, 3)
job['times'] = []
for match in matches:
job['times'].append({'runtime': match.strftime("%Y-%m-%d %H:%M:%SZ"),
'difference': str(match - now)})
self.generate('cron.html', values)
class QueuesPageHandler(BaseRequestHandler):
"""Shows information about configured (and default) task queues."""
PATH = '/queues'
def __init__(self):
self.stub = apiproxy_stub_map.apiproxy.GetStub('taskqueue')
def get(self):
"""Shows template displaying the configured task queues."""
values = {
'request': self.request,
'queues': self.stub.GetQueues(),
}
self.generate('queues.html', values)
def post(self):
"""Handle modifying actions and/or redirect to GET page."""
if self.request.get('action:flushqueue'):
self.stub.FlushQueue(self.request.get('queue'))
self.redirect(self.request.path_url)
class TasksPageHandler(BaseRequestHandler):
"""Shows information about a queue's tasks."""
PATH = '/tasks'
PAGE_SIZE = 20
def __init__(self):
self.stub = apiproxy_stub_map.apiproxy.GetStub('taskqueue')
def get(self):
"""Shows template displaying the queue's tasks."""
queue = self.request.get('queue')
start = int(self.request.get('start', 0))
all_tasks = self.stub.GetTasks(queue)
next_start = start + self.PAGE_SIZE
tasks = all_tasks[start:next_start]
current_page = int(start / self.PAGE_SIZE) + 1
pages = []
for number in xrange(int(math.ceil(len(all_tasks) /
float(self.PAGE_SIZE)))):
pages.append({
'number': number + 1,
'start': number * self.PAGE_SIZE
})
if not all_tasks[next_start:]:
next_start = -1
prev_start = start - self.PAGE_SIZE
if prev_start < 0:
prev_start = -1
values = {
'request': self.request,
'queue_name': queue,
'tasks': tasks,
'start_base_url': self.filter_url(['queue']),
'prev_start': prev_start,
'next_start': next_start,
'pages': pages,
'current_page': current_page,
}
self.generate('tasks.html', values)
def post(self):
if self.request.get('action:deletetask'):
self.stub.DeleteTask(self.request.get('queue'), self.request.get('task'))
self.redirect(self.request.path_url + '?queue=' + self.request.get('queue'))
return
class MemcachePageHandler(BaseRequestHandler):
"""Shows stats about memcache and query form to get values."""
PATH = '/memcache'
TYPES = ((str, str, 'String'),
(unicode, unicode, 'Unicode String'),
(bool, lambda value: MemcachePageHandler._ToBool(value), 'Boolean'),
(int, int, 'Integer'),
(long, long, 'Long Integer'),
(float, float, 'Float'))
DEFAULT_TYPESTR_FOR_NEW = 'String'
@staticmethod
def _ToBool(string_value):
"""Convert string to boolean value.
Args:
string_value: A string.
Returns:
Boolean. True if string_value is "true", False if string_value is
"false". This is case-insensitive.
Raises:
ValueError: string_value not "true" or "false".
"""
string_value_low = string_value.lower()
if string_value_low not in ('false', 'true'):
raise ValueError('invalid literal for boolean: %s' % string_value)
return string_value_low == 'true'
def _GetValueAndType(self, key):
"""Fetch value from memcache and detect its type.
Args:
key: String
Returns:
(value, type), value is a Python object or None if the key was not set in
the cache, type is a string describing the type of the value.
"""
try:
value = memcache.get(key)
except (pickle.UnpicklingError, AttributeError, EOFError, ImportError,
IndexError), e:
msg = 'Failed to retrieve value from cache: %s' % e
return msg, 'error'
if value is None:
return None, self.DEFAULT_TYPESTR_FOR_NEW
for typeobj, _, typestr in self.TYPES:
if isinstance(value, typeobj):
break
else:
typestr = 'pickled'
value = pprint.pformat(value, indent=2)
return value, typestr
def _SetValue(self, key, type_, value):
"""Convert a string value and store the result in memcache.
Args:
key: String
type_: String, describing what type the value should have in the cache.
value: String, will be converted according to type_.
Returns:
Result of memcache.set(ket, converted_value). True if value was set.
Raises:
ValueError: Value can't be converted according to type_.
"""
for _, converter, typestr in self.TYPES:
if typestr == type_:
value = converter(value)
break
else:
raise ValueError('Type %s not supported.' % type_)
return memcache.set(key, value)
def get(self):
"""Show template and prepare stats and/or key+value to display/edit."""
values = {'request': self.request,
'message': self.request.get('message')}
edit = self.request.get('edit')
key = self.request.get('key')
if edit:
key = edit
values['show_stats'] = False
values['show_value'] = False
values['show_valueform'] = True
values['types'] = [typestr for _, _, typestr in self.TYPES]
elif key:
values['show_stats'] = True
values['show_value'] = True
values['show_valueform'] = False
else:
values['show_stats'] = True
values['show_valueform'] = False
values['show_value'] = False
if key:
values['key'] = key
values['value'], values['type'] = self._GetValueAndType(key)
values['key_exists'] = values['value'] is not None
if values['type'] in ('pickled', 'error'):
values['writable'] = False
else:
values['writable'] = True
if values['show_stats']:
memcache_stats = memcache.get_stats()
if not memcache_stats:
memcache_stats = {'hits': 0, 'misses': 0, 'byte_hits': 0, 'items': 0,
'bytes': 0, 'oldest_item_age': 0}
values['stats'] = memcache_stats
try:
hitratio = memcache_stats['hits'] * 100 / (memcache_stats['hits']
+ memcache_stats['misses'])
except ZeroDivisionError:
hitratio = 0
values['hitratio'] = hitratio
delta_t = datetime.timedelta(seconds=memcache_stats['oldest_item_age'])
values['oldest_item_age'] = datetime.datetime.now() - delta_t
self.generate('memcache.html', values)
def _urlencode(self, query):
"""Encode a dictionary into a URL query string.
In contrast to urllib this encodes unicode characters as UTF8.
Args:
query: Dictionary of key/value pairs.
Returns:
String.
"""
return '&'.join('%s=%s' % (urllib.quote_plus(k.encode('utf8')),
urllib.quote_plus(v.encode('utf8')))
for k, v in query.iteritems())
def post(self):
"""Handle modifying actions and/or redirect to GET page."""
next_param = {}
if self.request.get('action:flush'):
if memcache.flush_all():
next_param['message'] = 'Cache flushed, all keys dropped.'
else:
next_param['message'] = 'Flushing the cache failed. Please try again.'
elif self.request.get('action:display'):
next_param['key'] = self.request.get('key')
elif self.request.get('action:edit'):
next_param['edit'] = self.request.get('key')
elif self.request.get('action:delete'):
key = self.request.get('key')
result = memcache.delete(key)
if result == memcache.DELETE_NETWORK_FAILURE:
next_param['message'] = ('ERROR: Network failure, key "%s" not deleted.'
% key)
elif result == memcache.DELETE_ITEM_MISSING:
next_param['message'] = 'Key "%s" not in cache.' % key
elif result == memcache.DELETE_SUCCESSFUL:
next_param['message'] = 'Key "%s" deleted.' % key
else:
next_param['message'] = ('Unknown return value. Key "%s" might still '
'exist.' % key)
elif self.request.get('action:save'):
key = self.request.get('key')
value = self.request.get('value')
type_ = self.request.get('type')
next_param['key'] = key
try:
if self._SetValue(key, type_, value):
next_param['message'] = 'Key "%s" saved.' % key
else:
next_param['message'] = 'ERROR: Failed to save key "%s".' % key
except ValueError, e:
next_param['message'] = 'ERROR: Unable to encode value: %s' % e
elif self.request.get('action:cancel'):
next_param['key'] = self.request.get('key')
else:
next_param['message'] = 'Unknown action.'
next = self.request.path_url
if next_param:
next = '%s?%s' % (next, self._urlencode(next_param))
self.redirect(next)
class DatastoreRequestHandler(BaseRequestHandler):
"""The base request handler for our datastore admin pages.
We provide utility functions for quering the datastore and infering the
types of entity properties.
"""
def start(self):
"""Returns the santized "start" argument from the URL."""
return self.request.get_range('start', min_value=0, default=0)
def num(self):
"""Returns the sanitized "num" argument from the URL."""
return self.request.get_range('num', min_value=1, max_value=100,
default=10)
def execute_query(self, start=0, num=0, no_order=False):
"""Parses the URL arguments and executes the query.
We return a tuple (list of entities, total entity count).
If the appropriate URL arguments are not given, we return an empty
set of results and 0 for the entity count.
"""
kind = self.request.get('kind')
if not kind:
return ([], 0)
query = datastore.Query(kind)
order = self.request.get('order')
order_type = self.request.get('order_type')
if order and order_type:
order_type = DataType.get_by_name(order_type).python_type()
if order.startswith('-'):
direction = datastore.Query.DESCENDING
order = order[1:]
else:
direction = datastore.Query.ASCENDING
try:
query.Order((order, order_type, direction))
except datastore_errors.BadArgumentError:
pass
if not start:
start = self.start()
if not num:
num = self.num()
total = query.Count()
entities = query.Get(start + num)[start:]
return (entities, total)
def get_key_values(self, entities):
"""Returns the union of key names used by the given list of entities.
We return the union as a dictionary mapping the key names to a sample
value from one of the entities for the key name.
"""
key_dict = {}
for entity in entities:
for key, value in entity.iteritems():
if key_dict.has_key(key):
key_dict[key].append(value)
else:
key_dict[key] = [value]
return key_dict
class DatastoreQueryHandler(DatastoreRequestHandler):
"""Our main request handler that executes queries and lists entities.
We use execute_query() in our base request handler to parse URL arguments
and execute the datastore query.
"""
PATH = '/datastore'
def get_kinds(self):
"""Get sorted list of kind names the datastore knows about.
This should only be called in the development environment as GetSchema is
expensive and no caching is done.
"""
schema = datastore_admin.GetSchema()
kinds = []
for entity_proto in schema:
kinds.append(entity_proto.key().path().element_list()[-1].type())
kinds.sort()
return kinds
def get(self):
"""Formats the results from execute_query() for datastore.html.
The only complex part of that process is calculating the pager variables
to generate the Gooooogle pager at the bottom of the page.
"""
result_set, total = self.execute_query()
key_values = self.get_key_values(result_set)
keys = key_values.keys()
keys.sort()
headers = []
for key in keys:
sample_value = key_values[key][0]
headers.append({
'name': key,
'type': DataType.get(sample_value).name(),
})
entities = []
edit_path = self.base_path() + DatastoreEditHandler.PATH
for entity in result_set:
attributes = []
for key in keys:
if entity.has_key(key):
raw_value = entity[key]
value = DataType.get(raw_value).format(raw_value)
short_value = DataType.get(raw_value).short_format(raw_value)
else:
value = ''
short_value = ''
attributes.append({
'name': key,
'value': value,
'short_value': short_value,
})
entities.append({
'key': str(entity.key()),
'key_name': entity.key().name(),
'key_id': entity.key().id(),
'shortened_key': str(entity.key())[:8] + '...',
'attributes': attributes,
'edit_uri': edit_path + '?key=' + str(entity.key()) + '&kind=' + urllib.quote(self.request.get('kind')) + '&next=' + urllib.quote(self.request.uri),
})
start = self.start()
num = self.num()
max_pager_links = 8
current_page = start / num
num_pages = int(math.ceil(total * 1.0 / num))
page_start = max(math.floor(current_page - max_pager_links / 2), 0)
page_end = min(page_start + max_pager_links, num_pages)
pages = []
for page in range(page_start + 1, page_end + 1):
pages.append({
'number': page,
'start': (page - 1) * num,
})
current_page += 1
in_production = self.in_production()
if in_production:
kinds = None
else:
kinds = self.get_kinds()
values = {
'request': self.request,
'in_production': in_production,
'kinds': kinds,
'kind': self.request.get('kind'),
'order': self.request.get('order'),
'headers': headers,
'entities': entities,
'message': self.request.get('msg'),
'pages': pages,
'current_page': current_page,
'num': num,
'next_start': -1,
'prev_start': -1,
'start': start,
'total': total,
'start_base_url': self.filter_url(['kind', 'order', 'order_type',
'num']),
'order_base_url': self.filter_url(['kind', 'num']),
}
if current_page > 1:
values['prev_start'] = int((current_page - 2) * num)
if current_page < num_pages:
values['next_start'] = int(current_page * num)
self.generate('datastore.html', values)
class DatastoreBatchEditHandler(DatastoreRequestHandler):
"""Request handler for a batch operation on entities.
Supports deleting multiple entities by key, then redirecting to another url.
"""
PATH = DatastoreQueryHandler.PATH + '/batchedit'
def post(self):
kind = self.request.get('kind')
keys = []
index = 0
num_keys = int(self.request.get('numkeys'))
for i in xrange(1, num_keys+1):
key = self.request.get('key%d' % i)
if key:
keys.append(key)
if self.request.get('action') == 'Delete':
num_deleted = 0
for key in keys:
datastore.Delete(datastore.Key(key))
num_deleted = num_deleted + 1
message = '%d entit%s deleted.' % (
num_deleted, ('ies', 'y')[num_deleted == 1])
self.redirect(
'%s&msg=%s' % (self.request.get('next'), urllib.quote_plus(message)))
return
self.error(404)
class DatastoreEditHandler(DatastoreRequestHandler):
"""Request handler for the entity create/edit form.
We determine how to generate a form to edit an entity by doing a query
on the entity kind and looking at the set of keys and their types in
the result set. We use the DataType subclasses for those introspected types
to generate the form and parse the form results.
"""
PATH = DatastoreQueryHandler.PATH + '/edit'
def get(self):
kind = self.request.get('kind')
sample_entities = self.execute_query()[0]
if len(sample_entities) < 1:
next_uri = self.request.get('next')
kind_param = 'kind=%s' % kind
if not kind_param in next_uri:
if '?' in next_uri:
next_uri += '&' + kind_param
else:
next_uri += '?' + kind_param
self.redirect(next_uri)
return
entity_key = self.request.get('key')
if entity_key:
key_instance = datastore.Key(entity_key)
entity_key_name = key_instance.name()
entity_key_id = key_instance.id()
parent_key = key_instance.parent()
entity = datastore.Get(key_instance)
else:
key_instance = None
entity_key_name = None
entity_key_id = None
parent_key = None
entity = None
if parent_key:
parent_kind = parent_key.kind()
else:
parent_kind = None
fields = []
key_values = self.get_key_values(sample_entities)
for key, sample_values in key_values.iteritems():
if entity and entity.has_key(key):
data_type = DataType.get(entity[key])
else:
data_type = DataType.get(sample_values[0])
name = data_type.name() + "|" + key
if entity and entity.has_key(key):
value = entity[key]
else:
value = None
field = data_type.input_field(name, value, sample_values)
fields.append((key, data_type.name(), field))
self.generate('datastore_edit.html', {
'kind': kind,
'key': entity_key,
'key_name': entity_key_name,
'key_id': entity_key_id,
'fields': fields,
'focus': self.request.get('focus'),
'next': self.request.get('next'),
'parent_key': parent_key,
'parent_kind': parent_kind,
})
def post(self):
kind = self.request.get('kind')
entity_key = self.request.get('key')
if entity_key:
if self.request.get('action') == 'Delete':
datastore.Delete(datastore.Key(entity_key))
self.redirect(self.request.get('next'))
return
entity = datastore.Get(datastore.Key(entity_key))
else:
entity = datastore.Entity(kind)
args = self.request.arguments()
for arg in args:
bar = arg.find('|')
if bar > 0:
data_type_name = arg[:bar]
field_name = arg[bar + 1:]
form_value = self.request.get(arg)
data_type = DataType.get_by_name(data_type_name)
if entity and entity.has_key(field_name):
old_formatted_value = data_type.format(entity[field_name])
if old_formatted_value == form_value:
continue
if len(form_value) > 0:
value = data_type.parse(form_value)
entity[field_name] = value
elif entity.has_key(field_name):
del entity[field_name]
datastore.Put(entity)
self.redirect(self.request.get('next'))
class DataType(object):
"""A DataType represents a data type in the datastore.
Each DataType subtype defines four methods:
format: returns a formatted string for a datastore value
input_field: returns a string HTML <input> element for this DataType
name: the friendly string name of this DataType
parse: parses the formatted string representation of this DataType
python_type: the canonical Python type for this datastore type
We use DataType instances to display formatted values in our result lists,
and we uses input_field/format/parse to generate forms and parse the results
from those forms to allow editing of entities.
"""
@staticmethod
def get(value):
return _DATA_TYPES[value.__class__]
@staticmethod
def get_by_name(name):
return _NAMED_DATA_TYPES[name]
def format(self, value):
return str(value)
def short_format(self, value):
return self.format(value)
def input_field(self, name, value, sample_values):
if value is not None:
string_value = self.format(value)
else:
string_value = ''
return '<input class="%s" name="%s" type="text" size="%d" value="%s"/>' % (cgi.escape(self.name()), cgi.escape(name), self.input_field_size(),
cgi.escape(string_value, True))
def input_field_size(self):
return 30
class StringType(DataType):
def format(self, value):
return value
def input_field(self, name, value, sample_values):
multiline = False
if value:
multiline = len(value) > 255 or value.find('\n') >= 0
if not multiline:
for sample_value in sample_values:
if sample_value and (len(sample_value) > 255 or
sample_value.find('\n') >= 0):
multiline = True
break
if multiline:
if not value:
value = ''
return '<textarea name="%s" rows="5" cols="50">%s</textarea>' % (cgi.escape(name), cgi.escape(value))
else:
return DataType.input_field(self, name, value, sample_values)
def name(self):
return 'string'
def parse(self, value):
return value
def python_type(self):
return str
def input_field_size(self):
return 50
class TextType(StringType):
def name(self):
return 'Text'
def input_field(self, name, value, sample_values):
return '<textarea name="%s" rows="5" cols="50">%s</textarea>' % (cgi.escape(name), cgi.escape(str(value)))
def parse(self, value):
return datastore_types.Text(value)
def python_type(self):
return datastore_types.Text
class BlobType(StringType):
def name(self):
return 'Blob'
def input_field(self, name, value, sample_values):
return '<binary>'
def format(self, value):
return '<binary>'
def python_type(self):
return datastore_types.Blob
class TimeType(DataType):
_FORMAT = '%Y-%m-%d %H:%M:%S'
def format(self, value):
return value.strftime(TimeType._FORMAT)
def name(self):
return 'datetime'
def parse(self, value):
return datetime.datetime(*(time.strptime(value, TimeType._FORMAT)[0:6]))
def python_type(self):
return datetime.datetime
class ListType(DataType):
def format(self, value):
value_file = cStringIO.StringIO()
try:
writer = csv.writer(value_file)
writer.writerow(value)
return value_file.getvalue()
finally:
value_file.close()
def name(self):
return 'list'
def parse(self, value):
value_file = cStringIO.StringIO(value)
try:
reader = csv.reader(value_file)
return reader.next()
finally:
value_file.close()
def python_type(self):
return list
class BoolType(DataType):
def name(self):
return 'bool'
def input_field(self, name, value, sample_values):
selected = { None: '', False: '', True: '' };
selected[value] = "selected"
return """<select class="%s" name="%s">
<option %s value=''></option>
<option %s value='0'>False</option>
<option %s value='1'>True</option></select>""" % (cgi.escape(self.name()), cgi.escape(name), selected[None],
selected[False], selected[True])
def parse(self, value):
if value.lower() is 'true':
return True
if value.lower() is 'false':
return False
return bool(int(value))
def python_type(self):
return bool
class NumberType(DataType):
def input_field_size(self):
return 10
class IntType(NumberType):
def name(self):
return 'int'
def parse(self, value):
return int(value)
def python_type(self):
return int
class LongType(NumberType):
def name(self):
return 'long'
def parse(self, value):
return long(value)
def python_type(self):
return long
class FloatType(NumberType):
def name(self):
return 'float'
def parse(self, value):
return float(value)
def python_type(self):
return float
class UserType(DataType):
def name(self):
return 'User'
def parse(self, value):
return users.User(value)
def python_type(self):
return users.User
def input_field_size(self):
return 15
class ReferenceType(DataType):
def name(self):
return 'Key'
def short_format(self, value):
return str(value)[:8] + '...'
def parse(self, value):
return datastore_types.Key(value)
def python_type(self):
return datastore_types.Key
def input_field_size(self):
return 85
class EmailType(StringType):
def name(self):
return 'Email'
def parse(self, value):
return datastore_types.Email(value)
def python_type(self):
return datastore_types.Email
class CategoryType(StringType):
def name(self):
return 'Category'
def parse(self, value):
return datastore_types.Category(value)
def python_type(self):
return datastore_types.Category
class LinkType(StringType):
def name(self):
return 'Link'
def parse(self, value):
return datastore_types.Link(value)
def python_type(self):
return datastore_types.Link
class GeoPtType(DataType):
def name(self):
return 'GeoPt'
def parse(self, value):
return datastore_types.GeoPt(value)
def python_type(self):
return datastore_types.GeoPt
class ImType(DataType):
def name(self):
return 'IM'
def parse(self, value):
return datastore_types.IM(value)
def python_type(self):
return datastore_types.IM
class PhoneNumberType(StringType):
def name(self):
return 'PhoneNumber'
def parse(self, value):
return datastore_types.PhoneNumber(value)
def python_type(self):
return datastore_types.PhoneNumber
class PostalAddressType(StringType):
def name(self):
return 'PostalAddress'
def parse(self, value):
return datastore_types.PostalAddress(value)
def python_type(self):
return datastore_types.PostalAddress
class RatingType(NumberType):
def name(self):
return 'Rating'
def parse(self, value):
return datastore_types.Rating(value)
def python_type(self):
return datastore_types.Rating
class NoneType(DataType):
def name(self):
return 'None'
def parse(self, value):
return None
def python_type(self):
return None
def format(self, value):
return 'None'
_DATA_TYPES = {
types.NoneType: NoneType(),
types.StringType: StringType(),
types.UnicodeType: StringType(),
datastore_types.Text: TextType(),
datastore_types.Blob: BlobType(),
types.BooleanType: BoolType(),
types.IntType: IntType(),
types.LongType: LongType(),
types.FloatType: FloatType(),
datetime.datetime: TimeType(),
users.User: UserType(),
datastore_types.Key: ReferenceType(),
types.ListType: ListType(),
datastore_types.Email: EmailType(),
datastore_types.Category: CategoryType(),
datastore_types.Link: LinkType(),
datastore_types.GeoPt: GeoPtType(),
datastore_types.IM: ImType(),
datastore_types.PhoneNumber: PhoneNumberType(),
datastore_types.PostalAddress: PostalAddressType(),
datastore_types.Rating: RatingType(),
}
_NAMED_DATA_TYPES = {}
for data_type in _DATA_TYPES.values():
_NAMED_DATA_TYPES[data_type.name()] = data_type
def _ParseCronYaml():
"""Load the cron.yaml file and parse it."""
cronyaml_files = 'cron.yaml', 'cron.yml'
for cronyaml in cronyaml_files:
try:
fh = open(cronyaml, "r")
except IOError:
continue
try:
cron_info = croninfo.LoadSingleCron(fh)
return cron_info
finally:
fh.close()
return None
def main():
handlers = [
('.*' + DatastoreQueryHandler.PATH, DatastoreQueryHandler),
('.*' + DatastoreEditHandler.PATH, DatastoreEditHandler),
('.*' + DatastoreBatchEditHandler.PATH, DatastoreBatchEditHandler),
('.*' + InteractivePageHandler.PATH, InteractivePageHandler),
('.*' + InteractiveExecuteHandler.PATH, InteractiveExecuteHandler),
('.*' + MemcachePageHandler.PATH, MemcachePageHandler),
('.*' + ImageHandler.PATH, ImageHandler),
('.*' + QueuesPageHandler.PATH, QueuesPageHandler),
('.*' + TasksPageHandler.PATH, TasksPageHandler),
('.*', DefaultPageHandler),
]
if HAVE_CRON:
handlers.insert(0, ('.*' + CronPageHandler.PATH, CronPageHandler))
application = webapp.WSGIApplication(handlers, debug=_DEBUG)
wsgiref.handlers.CGIHandler().run(application)
import django
if django.VERSION[:2] < (0, 97):
from django.template import defaultfilters
def safe(text, dummy=None):
return text
defaultfilters.register.filter("safe", safe)
if __name__ == '__main__':
main()