|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2011 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING.txt, distributed as part of this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
import datetime
|
|
|
import os
|
|
|
import uuid
|
|
|
|
|
|
from tornado import web
|
|
|
|
|
|
from IPython.config.configurable import LoggingConfigurable
|
|
|
from IPython.nbformat import current
|
|
|
from IPython.utils.traitlets import Unicode, List, Dict
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Code
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
class NotebookManager(LoggingConfigurable):
|
|
|
|
|
|
notebook_dir = Unicode(os.getcwd(), config=True, help="""
|
|
|
The directory to use for notebooks.
|
|
|
""")
|
|
|
filename_ext = Unicode(u'.ipynb')
|
|
|
allowed_formats = List([u'json',u'xml',u'py'])
|
|
|
|
|
|
# Map notebook_ids to notebook names
|
|
|
mapping = Dict()
|
|
|
# Map notebook names to notebook_ids
|
|
|
rev_mapping = Dict()
|
|
|
|
|
|
def list_notebooks(self):
|
|
|
"""List all notebooks in the notebook dir.
|
|
|
|
|
|
This returns a list of dicts of the form::
|
|
|
|
|
|
dict(notebook_id=notebook,name=name)
|
|
|
"""
|
|
|
names = os.listdir(self.notebook_dir)
|
|
|
names = [name.split(u'.')[0] \
|
|
|
for name in names if name.endswith(self.filename_ext)]
|
|
|
data = []
|
|
|
for name in names:
|
|
|
if name not in self.rev_mapping:
|
|
|
notebook_id = self.new_notebook_id(name)
|
|
|
else:
|
|
|
notebook_id = self.rev_mapping[name]
|
|
|
data.append(dict(notebook_id=notebook_id,name=name))
|
|
|
data = sorted(data, key=lambda item: item['name'])
|
|
|
return data
|
|
|
|
|
|
def new_notebook_id(self, name):
|
|
|
"""Generate a new notebook_id for a name and store its mappings."""
|
|
|
notebook_id = unicode(uuid.uuid4())
|
|
|
self.mapping[notebook_id] = name
|
|
|
self.rev_mapping[name] = notebook_id
|
|
|
return notebook_id
|
|
|
|
|
|
def delete_notebook_id(self, notebook_id):
|
|
|
"""Delete a notebook's id only. This doesn't delete the actual notebook."""
|
|
|
name = self.mapping[notebook_id]
|
|
|
del self.mapping[notebook_id]
|
|
|
del self.rev_mapping[name]
|
|
|
|
|
|
def notebook_exists(self, notebook_id):
|
|
|
"""Does a notebook exist?"""
|
|
|
if notebook_id not in self.mapping:
|
|
|
return False
|
|
|
path = self.get_path_by_name(self.mapping[notebook_id])
|
|
|
if not os.path.isfile(path):
|
|
|
return False
|
|
|
return True
|
|
|
|
|
|
def find_path(self, notebook_id):
|
|
|
"""Return a full path to a notebook given its notebook_id."""
|
|
|
try:
|
|
|
name = self.mapping[notebook_id]
|
|
|
except KeyError:
|
|
|
raise web.HTTPError(404)
|
|
|
return self.get_path_by_name(name)
|
|
|
|
|
|
def get_path_by_name(self, name):
|
|
|
"""Return a full path to a notebook given its name."""
|
|
|
filename = name + self.filename_ext
|
|
|
path = os.path.join(self.notebook_dir, filename)
|
|
|
return path
|
|
|
|
|
|
def get_notebook(self, notebook_id, format=u'json'):
|
|
|
"""Get the representation of a notebook in format by notebook_id."""
|
|
|
format = unicode(format)
|
|
|
if format not in self.allowed_formats:
|
|
|
raise web.HTTPError(415)
|
|
|
last_modified, nb = self.get_notebook_object(notebook_id)
|
|
|
data = current.writes(nb, format)
|
|
|
name = nb.get('name','notebook')
|
|
|
return last_modified, name, data
|
|
|
|
|
|
def get_notebook_object(self, notebook_id):
|
|
|
"""Get the NotebookNode representation of a notebook by notebook_id."""
|
|
|
path = self.find_path(notebook_id)
|
|
|
if not os.path.isfile(path):
|
|
|
raise web.HTTPError(404)
|
|
|
info = os.stat(path)
|
|
|
last_modified = datetime.datetime.utcfromtimestamp(info.st_mtime)
|
|
|
try:
|
|
|
with open(path,'r') as f:
|
|
|
s = f.read()
|
|
|
try:
|
|
|
# v2 and later have xml in the .ipynb files.
|
|
|
nb = current.reads(s, 'xml')
|
|
|
except:
|
|
|
# v1 had json in the .ipynb files.
|
|
|
nb = current.reads(s, 'json')
|
|
|
# v1 notebooks don't have a name field, so use the filename.
|
|
|
nb.name = os.path.split(path)[-1].split(u'.')[0]
|
|
|
except:
|
|
|
raise web.HTTPError(404)
|
|
|
return last_modified, nb
|
|
|
|
|
|
def save_new_notebook(self, data, name=None, format=u'json'):
|
|
|
"""Save a new notebook and return its notebook_id.
|
|
|
|
|
|
If a name is passed in, it overrides any values in the notebook data
|
|
|
and the value in the data is updated to use that value.
|
|
|
"""
|
|
|
if format not in self.allowed_formats:
|
|
|
raise web.HTTPError(415)
|
|
|
|
|
|
try:
|
|
|
nb = current.reads(data, format)
|
|
|
except:
|
|
|
if format == u'xml':
|
|
|
# v1 notebooks might come in with a format='xml' but be json.
|
|
|
try:
|
|
|
nb = current.reads(data, u'json')
|
|
|
except:
|
|
|
raise web.HTTPError(400)
|
|
|
else:
|
|
|
raise web.HTTPError(400)
|
|
|
|
|
|
if name is None:
|
|
|
try:
|
|
|
name = nb.name
|
|
|
except AttributeError:
|
|
|
raise web.HTTPError(400)
|
|
|
nb.name = name
|
|
|
|
|
|
notebook_id = self.new_notebook_id(name)
|
|
|
self.save_notebook_object(notebook_id, nb)
|
|
|
return notebook_id
|
|
|
|
|
|
def save_notebook(self, notebook_id, data, name=None, format=u'json'):
|
|
|
"""Save an existing notebook by notebook_id."""
|
|
|
if format not in self.allowed_formats:
|
|
|
raise web.HTTPError(415)
|
|
|
|
|
|
try:
|
|
|
nb = current.reads(data, format)
|
|
|
except:
|
|
|
if format == u'xml':
|
|
|
# v1 notebooks might come in with a format='xml' but be json.
|
|
|
try:
|
|
|
nb = current.reads(data, u'json')
|
|
|
except:
|
|
|
raise web.HTTPError(400)
|
|
|
else:
|
|
|
raise web.HTTPError(400)
|
|
|
|
|
|
if name is not None:
|
|
|
nb.name = name
|
|
|
self.save_notebook_object(notebook_id, nb)
|
|
|
|
|
|
def save_notebook_object(self, notebook_id, nb):
|
|
|
"""Save an existing notebook object by notebook_id."""
|
|
|
if notebook_id not in self.mapping:
|
|
|
raise web.HTTPError(404)
|
|
|
old_name = self.mapping[notebook_id]
|
|
|
try:
|
|
|
new_name = nb.name
|
|
|
except AttributeError:
|
|
|
raise web.HTTPError(400)
|
|
|
path = self.get_path_by_name(new_name)
|
|
|
try:
|
|
|
with open(path,'w') as f:
|
|
|
current.write(nb, f, u'xml')
|
|
|
except:
|
|
|
raise web.HTTPError(400)
|
|
|
if old_name != new_name:
|
|
|
old_path = self.get_path_by_name(old_name)
|
|
|
if os.path.isfile(old_path):
|
|
|
os.unlink(old_path)
|
|
|
self.mapping[notebook_id] = new_name
|
|
|
self.rev_mapping[new_name] = notebook_id
|
|
|
|
|
|
def delete_notebook(self, notebook_id):
|
|
|
"""Delete notebook by notebook_id."""
|
|
|
path = self.find_path(notebook_id)
|
|
|
if not os.path.isfile(path):
|
|
|
raise web.HTTPError(404)
|
|
|
os.unlink(path)
|
|
|
self.delete_notebook_id(notebook_id)
|
|
|
|
|
|
def new_notebook(self):
|
|
|
"""Create a new notebook and returns its notebook_id."""
|
|
|
i = 0
|
|
|
while True:
|
|
|
name = u'Untitled%i' % i
|
|
|
path = self.get_path_by_name(name)
|
|
|
if not os.path.isfile(path):
|
|
|
break
|
|
|
else:
|
|
|
i = i+1
|
|
|
notebook_id = self.new_notebook_id(name)
|
|
|
nb = current.new_notebook(name=name, id=notebook_id)
|
|
|
with open(path,'w') as f:
|
|
|
current.write(nb, f, u'xml')
|
|
|
return notebook_id
|
|
|
|
|
|
|
