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"""Tornado handlers for the notebooks web service.
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Authors:
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* Brian Granger
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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import json
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from tornado import web
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from IPython.html.utils import url_path_join
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from IPython.utils.jsonutil import date_default
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from IPython.html.base.handlers import IPythonHandler, json_errors
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#-----------------------------------------------------------------------------
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# Notebook web service handlers
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#-----------------------------------------------------------------------------
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class NotebookHandler(IPythonHandler):
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SUPPORTED_METHODS = (u'GET', u'PUT', u'PATCH', u'POST', u'DELETE')
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def notebook_location(self, name, path=''):
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"""Return the full URL location of a notebook based.
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Parameters
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----------
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name : unicode
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The base name of the notebook, such as "foo.ipynb".
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path : unicode
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The URL path of the notebook.
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"""
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return url_path_join(self.base_project_url, 'api', 'notebooks', path, name)
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@web.authenticated
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@json_errors
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def get(self, path='', name=None):
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"""
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GET with path and no notebook lists notebooks in a directory
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GET with path and notebook name
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GET get checks if a notebook is not named, an returns a list of notebooks
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in the notebook path given. If a name is given, return
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the notebook representation"""
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nbm = self.notebook_manager
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# Check to see if a notebook name was given
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if name is None:
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# List notebooks in 'path'
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notebooks = nbm.list_notebooks(path)
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self.finish(json.dumps(notebooks, default=date_default))
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return
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# get and return notebook representation
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model = nbm.get_notebook_model(name, path)
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self.set_header(u'Last-Modified', model[u'last_modified'])
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if self.get_argument('download', default='False') == 'True':
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format = self.get_argument('format', default='json')
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if format != u'json':
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self.set_header('Content-Type', 'application/json')
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raise web.HTTPError(400, "Unrecognized format: %s" % format)
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self.set_header('Content-Disposition',
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'attachment; filename="%s"' % name
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)
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self.finish(json.dumps(model['content'], default=date_default))
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else:
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self.finish(json.dumps(model, default=date_default))
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@web.authenticated
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@json_errors
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def patch(self, path='', name=None):
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"""PATCH renames a notebook without re-uploading content."""
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nbm = self.notebook_manager
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if name is None:
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raise web.HTTPError(400, u'Notebook name missing')
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model = self.get_json_body()
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if model is None:
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raise web.HTTPError(400, u'JSON body missing')
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model = nbm.update_notebook_model(model, name, path)
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location = self.notebook_location(model[u'name'], model[u'path'])
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self.set_header(u'Location', location)
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self.set_header(u'Last-Modified', model[u'last_modified'])
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self.finish(json.dumps(model, default=date_default))
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@web.authenticated
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@json_errors
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def post(self, path='', name=None):
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"""Create a new notebook in the specified path.
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POST creates new notebooks.
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POST /api/notebooks/path : new untitled notebook in path
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POST /api/notebooks/path/notebook.ipynb : new notebook with name in path
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If content specified upload notebook, otherwise start empty.
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"""
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nbm = self.notebook_manager
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model = self.get_json_body()
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if name is None:
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# creating new notebook, model doesn't make sense
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if model is not None:
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raise web.HTTPError(400, "Model not valid when creating untitled notebooks.")
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model = nbm.create_notebook_model(path=path)
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else:
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if model is None:
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self.log.info("Creating new Notebook at %s/%s", path, name)
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model = {}
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else:
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self.log.info("Uploading Notebook to %s/%s", path, name)
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# set the model name from the URL
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model['name'] = name
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model = nbm.create_notebook_model(model, path)
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location = self.notebook_location(model[u'name'], model[u'path'])
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self.set_header(u'Location', location)
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self.set_header(u'Last-Modified', model[u'last_modified'])
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self.set_status(201)
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self.finish(json.dumps(model, default=date_default))
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@web.authenticated
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@json_errors
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def put(self, path='', name=None):
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"""saves the notebook in the location given by 'notebook_path'."""
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nbm = self.notebook_manager
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model = self.get_json_body()
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if model is None:
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raise web.HTTPError(400, u'JSON body missing')
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nbm.save_notebook_model(model, name, path)
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self.finish(json.dumps(model, default=date_default))
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@web.authenticated
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@json_errors
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def delete(self, path='', name=None):
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"""delete the notebook in the given notebook path"""
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nbm = self.notebook_manager
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nbm.delete_notebook_model(name, path)
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self.set_status(204)
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self.finish()
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class NotebookCopyHandler(IPythonHandler):
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SUPPORTED_METHODS = ('POST')
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@web.authenticated
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@json_errors
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def post(self, path='', name=None):
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"""Copy an existing notebook."""
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nbm = self.notebook_manager
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model = self.get_json_body()
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if name is None:
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raise web.HTTPError(400, "Notebook name required")
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self.log.info("Copying Notebook %s/%s", path, name)
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model = nbm.copy_notebook(name, path)
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location = url_path_join(
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self.base_project_url, 'api', 'notebooks',
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model['path'], model['name'],
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)
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self.set_header(u'Location', location)
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self.set_header(u'Last-Modified', model[u'last_modified'])
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self.set_status(201)
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self.finish(json.dumps(model, default=date_default))
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class NotebookCheckpointsHandler(IPythonHandler):
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SUPPORTED_METHODS = ('GET', 'POST')
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@web.authenticated
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@json_errors
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def get(self, path='', name=None):
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"""get lists checkpoints for a notebook"""
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nbm = self.notebook_manager
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checkpoints = nbm.list_checkpoints(name, path)
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data = json.dumps(checkpoints, default=date_default)
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self.finish(data)
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@web.authenticated
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@json_errors
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def post(self, path='', name=None):
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"""post creates a new checkpoint"""
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nbm = self.notebook_manager
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checkpoint = nbm.create_checkpoint(name, path)
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data = json.dumps(checkpoint, default=date_default)
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location = url_path_join(self.base_project_url, u'/api/notebooks',
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path, name, 'checkpoints', checkpoint[u'checkpoint_id'])
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self.set_header(u'Location', location)
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self.finish(data)
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class ModifyNotebookCheckpointsHandler(IPythonHandler):
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SUPPORTED_METHODS = ('POST', 'DELETE')
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@web.authenticated
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@json_errors
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def post(self, path, name, checkpoint_id):
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"""post restores a notebook from a checkpoint"""
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nbm = self.notebook_manager
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nbm.restore_checkpoint(checkpoint_id, name, path)
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self.set_status(204)
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self.finish()
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@web.authenticated
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@json_errors
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def delete(self, path, name, checkpoint_id):
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"""delete clears a checkpoint for a given notebook"""
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nbm = self.notebook_manager
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nbm.delete_checkpoint(checkpoint_id, name, path)
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self.set_status(204)
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self.finish()
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#-----------------------------------------------------------------------------
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# URL to handler mappings
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#-----------------------------------------------------------------------------
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_path_regex = r"(?P<path>(?:/.*)*)"
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_checkpoint_id_regex = r"(?P<checkpoint_id>[\w-]+)"
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_notebook_name_regex = r"(?P<name>[^/]+\.ipynb)"
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_notebook_path_regex = "%s/%s" % (_path_regex, _notebook_name_regex)
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default_handlers = [
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(r"/api/notebooks%s/copy" % _notebook_path_regex, NotebookCopyHandler),
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(r"/api/notebooks%s/checkpoints" % _notebook_path_regex, NotebookCheckpointsHandler),
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(r"/api/notebooks%s/checkpoints/%s" % (_notebook_path_regex, _checkpoint_id_regex),
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ModifyNotebookCheckpointsHandler),
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(r"/api/notebooks%s" % _notebook_path_regex, NotebookHandler),
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(r"/api/notebooks%s" % _path_regex, NotebookHandler),
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]
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