def _publish_msg(self, msg_type, data=None, metadata=None, **keys):
"""Helper for sending a comm message on IOPub"""
data = {} if data is None else data
metadata = {} if metadata is None else metadata
content = json_clean(dict(data=data, comm_id=self.comm_id, **keys))
self.session.send(self.iopub_socket, msg_type,
content,
metadata=json_clean(metadata),
parent=self.shell.get_parent(),
ident=self.topic,
)
def _showtraceback(self, etype, evalue, stb):
exc_content = {
u'traceback' : stb,
u'ename' : unicode(etype.__name__),
u'evalue' : unicode(evalue)
}
dh = self.displayhook
# Send exception info over pub socket for other clients than the caller
# to pick up
topic = None
if dh.topic:
topic = dh.topic.replace(b'pyout', b'pyerr')
exc_msg = dh.session.send(dh.pub_socket, u'pyerr', json_clean(exc_content), dh.parent_header, ident=topic)
# FIXME - Hack: store exception info in shell object. Right now, the
# caller is reading this info after the fact, we need to fix this logic
# to remove this hack. Even uglier, we need to store the error status
# here, because in the main loop, the logic that sets it is being
# skipped because runlines swallows the exceptions.
exc_content[u'status'] = u'error'
self._reply_content = exc_content
# /FIXME
return exc_content
def _publish_msg(self, msg_type, data=None, metadata=None, buffers=None, **keys):
"""Helper for sending a comm message on IOPub"""
if threading.current_thread().name != 'MainThread' and IOLoop.initialized():
# make sure we never send on a zmq socket outside the main IOLoop thread
IOLoop.instance().add_callback(lambda : self._publish_msg(msg_type, data, metadata, buffers, **keys))
return
data = {} if data is None else data
metadata = {} if metadata is None else metadata
content = json_clean(dict(data=data, comm_id=self.comm_id, **keys))
self.session.send(self.iopub_socket, msg_type,
content,
metadata=json_clean(metadata),
parent=self.kernel._parent_header,
ident=self.topic,
buffers=buffers,
)
def send_execute_reply(self, stream, ident, parent, md, reply_content):
""" Send a reply to execute_request """
# Flush output before sending the reply.
self._flush_execute_output()
# Cleanup the reply and prepare metadata
reply_content = json_clean(reply_content)
md = md.copy()
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
# Publish the reply
reply_msg = self.session.send(stream, u'execute_reply',
reply_content, parent, metadata=md,
ident=ident)
# Handle the reply message
content = parent[u'content']
stop_on_error = content.get('stop_on_error', True)
silent = content[u'silent']
self.log.debug("%s", reply_msg)
if not silent and reply_msg['content']['status'] == u'error' and stop_on_error:
self._abort_queues()
self._publish_idle()
if hasattr(stream, 'flush'):
stream.flush()
def history_request(self, stream, ident, parent):
# We need to pull these out, as passing **kwargs doesn't work with
# unicode keys before Python 2.6.5.
hist_access_type = parent["content"]["hist_access_type"]
raw = parent["content"]["raw"]
output = parent["content"]["output"]
if hist_access_type == "tail":
n = parent["content"]["n"]
hist = self.shell.history_manager.get_tail(n, raw=raw, output=output, include_latest=True)
elif hist_access_type == "range":
session = parent["content"]["session"]
start = parent["content"]["start"]
stop = parent["content"]["stop"]
hist = self.shell.history_manager.get_range(session, start, stop, raw=raw, output=output)
elif hist_access_type == "search":
n = parent["content"].get("n")
unique = parent["content"].get("unique", False)
pattern = parent["content"]["pattern"]
hist = self.shell.history_manager.search(pattern, raw=raw, output=output, n=n, unique=unique)
else:
hist = []
hist = list(hist)
content = {"history": hist}
content = json_clean(content)
msg = self.session.send(stream, "history_reply", content, parent, ident)
self.log.debug("Sending history reply with %i entries", len(hist))
def history_request(self, stream, ident, parent):
# We need to pull these out, as passing **kwargs doesn't work with
# unicode keys before Python 2.6.5.
hist_access_type = parent['content']['hist_access_type']
raw = parent['content']['raw']
output = parent['content']['output']
if hist_access_type == 'tail':
n = parent['content']['n']
hist = self.shell.history_manager.get_tail(n, raw=raw, output=output,
include_latest=True)
elif hist_access_type == 'range':
session = parent['content']['session']
start = parent['content']['start']
stop = parent['content']['stop']
hist = self.shell.history_manager.get_range(session, start, stop,
raw=raw, output=output)
elif hist_access_type == 'search':
pattern = parent['content']['pattern']
hist = self.shell.history_manager.search(pattern, raw=raw,
output=output)
else:
hist = []
hist = list(hist)
content = {'history' : hist}
content = json_clean(content)
msg = self.session.send(stream, 'history_reply',
content, parent, ident)
self.log.debug("Sending history reply with %i entries", len(hist))
def object_info_request(self, stream, ident, parent):
content = parent["content"]
object_info = self.shell.object_inspect(content["oname"], detail_level=content.get("detail_level", 0))
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
msg = self.session.send(stream, "object_info_reply", oinfo, parent, ident)
self.log.debug("%s", msg)
def _raw_input(self, prompt, ident, parent):
# Flush output before making the request.
sys.stderr.flush()
sys.stdout.flush()
# Send the input request.
content = json_clean(dict(prompt=prompt))
self.session.send(self.stdin_socket, u'input_request', content, parent,
ident=ident)
# Await a response.
while True:
try:
ident, reply = self.session.recv(self.stdin_socket, 0)
except Exception:
self.log.warn("Invalid Message:", exc_info=True)
else:
break
try:
value = reply['content']['value']
except:
self.log.error("Got bad raw_input reply: ")
self.log.error("%s", parent)
value = ''
if value == '\x04':
# EOF
raise EOFError
return value
def _showtraceback(self, etype, evalue, stb):
# try to preserve ordering of tracebacks and print statements
sys.stdout.flush()
sys.stderr.flush()
exc_content = {
u"traceback": stb,
u"ename": unicode_type(etype.__name__),
u"evalue": py3compat.safe_unicode(evalue),
}
dh = self.displayhook
# Send exception info over pub socket for other clients than the caller
# to pick up
topic = None
if dh.topic:
topic = dh.topic.replace(b"execute_result", b"error")
exc_msg = dh.session.send(dh.pub_socket, u"error", json_clean(exc_content), dh.parent_header, ident=topic)
# FIXME - Hack: store exception info in shell object. Right now, the
# caller is reading this info after the fact, we need to fix this logic
# to remove this hack. Even uglier, we need to store the error status
# here, because in the main loop, the logic that sets it is being
# skipped because runlines swallows the exceptions.
exc_content[u"status"] = u"error"
self._reply_content = exc_content
# /FIXME
return exc_content
def history_request(self, ident, parent):
# We need to pull these out, as passing **kwargs doesn't work with
# unicode keys before Python 2.6.5.
hist_access_type = parent["content"]["hist_access_type"]
raw = parent["content"]["raw"]
output = parent["content"]["output"]
if hist_access_type == "tail":
n = parent["content"]["n"]
hist = self.shell.history_manager.get_tail(n, raw=raw, output=output, include_latest=True)
elif hist_access_type == "range":
session = parent["content"]["session"]
start = parent["content"]["start"]
stop = parent["content"]["stop"]
hist = self.shell.history_manager.get_range(session, start, stop, raw=raw, output=output)
elif hist_access_type == "search":
pattern = parent["content"]["pattern"]
hist = self.shell.history_manager.search(pattern, raw=raw, output=output)
else:
hist = []
content = {"history": list(hist)}
content = json_clean(content)
msg = self.session.send(self.shell_socket, "history_reply", content, parent, ident)
self.log.debug(str(msg))
def object_info_request(self, ident, parent):
object_info = self.shell.object_inspect(parent['content']['oname'])
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
msg = self.session.send(self.shell_socket, 'object_info_reply',
oinfo, parent, ident)
self.log.debug(msg)
def inspect_request(self, stream, ident, parent):
content = parent["content"]
reply_content = self.do_inspect(content["code"], content["cursor_pos"], content.get("detail_level", 0))
# Before we send this object over, we scrub it for JSON usage
reply_content = json_clean(reply_content)
msg = self.session.send(stream, "inspect_reply", reply_content, parent, ident)
self.log.debug("%s", msg)
def history_request(self, stream, ident, parent):
content = parent["content"]
reply_content = self.do_history(**content)
reply_content = json_clean(reply_content)
msg = self.session.send(stream, "history_reply", reply_content, parent, ident)
self.log.debug("%s", msg)
def is_complete_request(self, stream, ident, parent):
content = parent["content"]
code = content["code"]
reply_content = self.do_is_complete(code)
reply_content = json_clean(reply_content)
reply_msg = self.session.send(stream, "is_complete_reply", reply_content, parent, ident)
self.log.debug("%s", reply_msg)
def execute_request(self, stream, ident, parent):
"""handle an execute_request"""
self._publish_status(u'busy', parent)
try:
content = parent[u'content']
code = py3compat.cast_unicode_py2(content[u'code'])
silent = content[u'silent']
store_history = content.get(u'store_history', not silent)
user_expressions = content.get('user_expressions', {})
allow_stdin = content.get('allow_stdin', False)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", parent)
return
md = self._make_metadata(parent['metadata'])
# Set the parent message of the display hook and out streams.
self.set_parent(ident, parent)
# Re-broadcast our input for the benefit of listening clients, and
# start computing output
if not silent:
self.execution_count += 1
self._publish_execute_input(code, parent, self.execution_count)
reply_content = self.do_execute(code, silent, store_history,
user_expressions, allow_stdin)
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if self._execute_sleep:
time.sleep(self._execute_sleep)
# Send the reply.
reply_content = json_clean(reply_content)
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
reply_msg = self.session.send(stream, u'execute_reply',
reply_content, parent, metadata=md,
ident=ident)
self.log.debug("%s", reply_msg)
if not silent and reply_msg['content']['status'] == u'error':
self._abort_queues()
self._publish_status(u'idle', parent)
def complete_request(self, stream, ident, parent):
txt, matches = self._complete(parent)
matches = {'matches' : matches,
'matched_text' : txt,
'status' : 'ok'}
matches = json_clean(matches)
completion_msg = self.session.send(stream, 'complete_reply',
matches, parent, ident)
self.log.debug("%s", completion_msg)
def object_info_request(self, stream, ident, parent):
content = parent['content']
object_info = self.shell.object_inspect(content['oname'],
detail_level=content.get(
'detail_level', 0))
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
msg = self.session.send(stream, 'object_info_reply', oinfo, parent,
ident)
def execute_request(self, stream, ident, parent):
"""handle an execute_request"""
try:
content = parent[u'content']
code = py3compat.cast_unicode_py2(content[u'code'])
silent = content[u'silent']
store_history = content.get(u'store_history', not silent)
user_expressions = content.get('user_expressions', {})
allow_stdin = content.get('allow_stdin', False)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", parent)
return
stop_on_error = content.get('stop_on_error', True)
md = self._make_metadata(parent['metadata'])
# Re-broadcast our input for the benefit of listening clients, and
# start computing output
if not silent:
self.execution_count += 1
self._publish_execute_input(code, parent, self.execution_count)
reply_content = self.do_execute(code, silent, store_history,
user_expressions, allow_stdin)
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if self._execute_sleep:
time.sleep(self._execute_sleep)
# Send the reply.
reply_content = json_clean(reply_content)
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
reply_msg = self.session.send(stream,
u'execute_reply',
reply_content,
parent,
metadata=md,
ident=ident)
self.log.debug("%s", reply_msg)
if not silent and reply_msg['content'][
'status'] == u'error' and stop_on_error:
self._abort_queues()
def history_request(self, stream, ident, parent):
content = parent['content']
reply_content = self.do_history(**content)
reply_content = json_clean(reply_content)
msg = self.session.send(stream, 'history_reply', reply_content, parent,
ident)
self.log.debug("%s", msg)
def complete_request(self, stream, ident, parent):
content = parent["content"]
code = content["code"]
cursor_pos = content["cursor_pos"]
matches = self.do_complete(code, cursor_pos)
matches = json_clean(matches)
completion_msg = self.session.send(stream, "complete_reply", matches, parent, ident)
self.log.debug("%s", completion_msg)
def is_complete_request(self, stream, ident, parent):
content = parent['content']
code = content['code']
reply_content = self.do_is_complete(code)
reply_content = json_clean(reply_content)
reply_msg = self.session.send(stream, 'is_complete_reply',
reply_content, parent, ident)
self.log.debug("%s", reply_msg)
def inspect_request(self, stream, ident, parent):
content = parent['content']
reply_content = self.do_inspect(content['code'], content['cursor_pos'],
content.get('detail_level', 0))
# Before we send this object over, we scrub it for JSON usage
reply_content = json_clean(reply_content)
msg = self.session.send(stream, 'inspect_reply',
reply_content, parent, ident)
self.log.debug("%s", msg)
def complete_request(self, stream, ident, parent):
content = parent['content']
code = content['code']
cursor_pos = content['cursor_pos']
matches = self.do_complete(code, cursor_pos)
matches = json_clean(matches)
completion_msg = self.session.send(stream, 'complete_reply',
matches, parent, ident)
self.log.debug("%s", completion_msg)
def publish(self, source, data, metadata=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content["source"] = source
content["data"] = encode_images(data)
content["metadata"] = metadata
sendMessage("iopub", "display_data", content=json_clean(content), parent_header=self.parent_header)
def publish(self, source, data, metadata=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {'source': source, 'data': encode_images(data), 'metadata': metadata}
self.session.send(
self.pub_socket, u'display_data', json_clean(content),
parent=self.parent_header, ident=self.topic,
)
def object_info_request(self, ident, parent):
content = parent['content']
object_info = self.shell.object_inspect(content['oname'],
detail_level = content.get('detail_level', 0)
)
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
msg = self.session.send(self.shell_socket, 'object_info_reply',
oinfo, parent, ident)
self.log.debug(msg)
def _publish_msg(self,
msg_type,
data=None,
metadata=None,
buffers=None,
**keys):
"""Helper for sending a comm message on IOPub"""
data = {} if data is None else data
metadata = {} if metadata is None else metadata
content = json_clean(dict(data=data, comm_id=self.comm_id, **keys))
self.session.send(
self.iopub_socket,
msg_type,
content,
metadata=json_clean(metadata),
parent=self.kernel._parent_header,
ident=self.topic,
buffers=buffers,
)
def f(stream, ident, parent, *args, **kwargs):
kernel._publish_status(u'busy', parent)
md = kernel._make_metadata(parent['metadata'])
content = parent['content']
# Set the parent message of the display hook and out streams.
kernel.shell.displayhook.set_parent(parent)
kernel.shell.display_pub.set_parent(parent)
kernel.shell.data_pub.set_parent(parent)
sys.stdout.set_parent(parent)
sys.stderr.set_parent(parent)
reply_content = {}
try:
reply_content[u'result'] = handler(stream, ident, parent, *args, **kwargs)
except:
status = u'error'
etype, evalue, tb = sys.exc_info()
import traceback
tb_list = traceback.format_exception(etype, evalue, tb)
reply_content.update(kernel.shell._showtraceback(etype, evalue, tb_list))
else:
status = u'ok'
reply_content[u'status'] = status
sys.stdout.flush()
sys.stderr.flush()
# this should be refactored probably to use existing IPython code
if reply_content['status'] == 'ok':
reply_content[u'user_variables'] = \
kernel.shell.user_variables(content.get(u'user_variables', []))
reply_content[u'user_expressions'] = \
kernel.shell.user_expressions(content.get(u'user_expressions', {}))
else:
# If there was an error, don't even try to compute variables or
# expressions
reply_content[u'user_variables'] = {}
reply_content[u'user_expressions'] = {}
if kernel._execute_sleep:
import time
time.sleep(kernel._execute_sleep)
from IPython.utils.jsonutil import json_clean
reply_content = json_clean(reply_content)
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
reply_msg = kernel.session.send(stream, key+u'_reply',
reply_content, parent, metadata=md,
ident=ident)
kernel.log.debug("%s", reply_msg)
kernel._publish_status(u'idle', parent)
def publish(self, source, data, metadata=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content['source'] = source
content['data'] = encode_images(data)
content['metadata'] = metadata
sendMessage('iopub', 'display_data', content=json_clean(content),
parent_header=self.parent_header)
def publish(self, source, data, metadata=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content['source'] = source
content['data'] = encode_images(data)
content['metadata'] = metadata
iopub_output.put(CreateMessage('display_data', content=json_clean(content),
parent_header=self.parent_header))
def publish(self, data, metadata=None, source=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(data, metadata)
content = {}
content["data"] = encode_images(data)
content["metadata"] = metadata
self.session.send(
self.pub_socket, u"display_data", json_clean(content), parent=self.parent_header, ident=self.topic
)
def publish(self, source, data, metadata=None):
self._flush_streams()
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content['source'] = source
content['data'] = encode_images(data)
content['metadata'] = metadata
self.session.send(
self.pub_socket, u'display_data', json_clean(content),
parent=self.parent_header, ident=self.topic,
)
def publish(self, source, data, metadata=None):
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content['source'] = source
_encode_binary(data)
content['data'] = data
content['metadata'] = metadata
self.session.send(
self.pub_socket, u'display_data', json_clean(content),
parent=self.parent_header
)
def publish(self, source, data, metadata=None):
if metadata is None:
metadata = {}
self._validate_data(source, data, metadata)
content = {}
content['source'] = source
_encode_binary(data)
content['data'] = data
content['metadata'] = metadata
self.session.send(
self.pub_socket, u'display_data', json_clean(content),
parent=self.parent_header
)
def complete_request(self, stream, ident, parent):
content = parent['content']
code = content['code']
cursor_pos = content['cursor_pos']
txt, matches = self.shell.complete('', code, cursor_pos)
matches = {'matches' : matches,
'cursor_end' : cursor_pos,
'cursor_start' : cursor_pos - len(txt),
'metadata' : {},
'status' : 'ok'}
matches = json_clean(matches)
completion_msg = self.session.send(stream, 'complete_reply',
matches, parent, ident)
self.log.debug("%s", completion_msg)
def execute_request(self, stream, ident, parent):
"""handle an execute_request"""
try:
content = parent[u"content"]
code = py3compat.cast_unicode_py2(content[u"code"])
silent = content[u"silent"]
store_history = content.get(u"store_history", not silent)
user_expressions = content.get("user_expressions", {})
allow_stdin = content.get("allow_stdin", False)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", parent)
return
md = self._make_metadata(parent["metadata"])
# Re-broadcast our input for the benefit of listening clients, and
# start computing output
if not silent:
self.execution_count += 1
self._publish_execute_input(code, parent, self.execution_count)
reply_content = self.do_execute(code, silent, store_history, user_expressions, allow_stdin)
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if self._execute_sleep:
time.sleep(self._execute_sleep)
# Send the reply.
reply_content = json_clean(reply_content)
md["status"] = reply_content["status"]
if reply_content["status"] == "error" and reply_content["ename"] == "UnmetDependency":
md["dependencies_met"] = False
reply_msg = self.session.send(stream, u"execute_reply", reply_content, parent, metadata=md, ident=ident)
self.log.debug("%s", reply_msg)
if not silent and reply_msg["content"]["status"] == u"error":
self._abort_queues()
def complete_request(self, stream, ident, parent):
content = parent['content']
code = content['code']
cursor_pos = content['cursor_pos']
txt, matches = self.shell.complete('', code, cursor_pos)
matches = {
'matches': matches,
'cursor_end': cursor_pos,
'cursor_start': cursor_pos - len(txt),
'metadata': {},
'status': 'ok'
}
matches = json_clean(matches)
completion_msg = self.session.send(stream, 'complete_reply', matches,
parent, ident)
self.log.debug("%s", completion_msg)
def _raw_input(self, prompt, ident, parent):
# Flush output before making the request.
sys.stderr.flush()
sys.stdout.flush()
# flush the stdin socket, to purge stale replies
while True:
try:
self.stdin_socket.recv_multipart(zmq.NOBLOCK)
except zmq.ZMQError as e:
if e.errno == zmq.EAGAIN:
break
else:
raise
# Send the input request.
content = json_clean(dict(prompt=prompt))
self.session.send(self.stdin_socket,
u'input_request',
content,
parent,
ident=ident)
# Await a response.
while True:
try:
ident, reply = self.session.recv(self.stdin_socket, 0)
except Exception:
self.log.warn("Invalid Message:", exc_info=True)
except KeyboardInterrupt:
# re-raise KeyboardInterrupt, to truncate traceback
raise KeyboardInterrupt
else:
break
try:
value = py3compat.unicode_to_str(reply['content']['value'])
except:
self.log.error("Got bad raw_input reply: ")
self.log.error("%s", parent)
value = ''
if value == '\x04':
# EOF
raise EOFError
return value
def publish_data(self, data):
"""publish a data_message on the IOPub channel
Parameters
----------
data : dict
The data to be published. Think of it as a namespace.
"""
session = self.session
buffers = serialize_object(data,
buffer_threshold=session.buffer_threshold,
item_threshold=session.item_threshold,
)
content = json_clean(dict(keys=data.keys()))
session.send(self.pub_socket, 'data_message', content=content,
parent=self.parent_header,
buffers=buffers,
ident=self.topic,
)
def publish_data(self, data):
"""publish a data_message on the IOPub channel
Parameters
----------
data : dict
The data to be published. Think of it as a namespace.
"""
session = self.session
buffers = serialize_object(data,
buffer_threshold=session.buffer_threshold,
item_threshold=session.item_threshold,
)
content = json_clean(dict(keys=data.keys()))
session.send(self.pub_socket, 'data_message', content=content,
parent=self.parent_header,
buffers=buffers,
ident=self.topic,
)
def history_request(self, stream, ident, parent):
# We need to pull these out, as passing **kwargs doesn't work with
# unicode keys before Python 2.6.5.
hist_access_type = parent['content']['hist_access_type']
raw = parent['content']['raw']
output = parent['content']['output']
if hist_access_type == 'tail':
n = parent['content']['n']
hist = self.shell.history_manager.get_tail(n,
raw=raw,
output=output,
include_latest=True)
elif hist_access_type == 'range':
session = parent['content']['session']
start = parent['content']['start']
stop = parent['content']['stop']
hist = self.shell.history_manager.get_range(session,
start,
stop,
raw=raw,
output=output)
elif hist_access_type == 'search':
n = parent['content'].get('n')
unique = parent['content'].get('unique', False)
pattern = parent['content']['pattern']
hist = self.shell.history_manager.search(pattern,
raw=raw,
output=output,
n=n,
unique=unique)
else:
hist = []
hist = list(hist)
content = {'history': hist}
content = json_clean(content)
msg = self.session.send(stream, 'history_reply', content, parent,
ident)
self.log.debug("Sending history reply with %i entries", len(hist))
def inspect_request(self, stream, ident, parent):
content = parent['content']
name = token_at_cursor(content['code'], content['cursor_pos'])
info = self.shell.object_inspect(name)
reply_content = {'status': 'ok'}
reply_content['data'] = data = {}
reply_content['metadata'] = {}
reply_content['found'] = info['found']
if info['found']:
info_text = self.shell.object_inspect_text(
name,
detail_level=content.get('detail_level', 0),
)
reply_content['data']['text/plain'] = info_text
# Before we send this object over, we scrub it for JSON usage
reply_content = json_clean(reply_content)
msg = self.session.send(stream, 'inspect_reply', reply_content, parent,
ident)
self.log.debug("%s", msg)
def inspect_request(self, stream, ident, parent):
content = parent['content']
name = token_at_cursor(content['code'], content['cursor_pos'])
info = self.shell.object_inspect(name)
reply_content = {'status' : 'ok'}
reply_content['data'] = data = {}
reply_content['metadata'] = {}
reply_content['found'] = info['found']
if info['found']:
info_text = self.shell.object_inspect_text(
name,
detail_level=content.get('detail_level', 0),
)
reply_content['data']['text/plain'] = info_text
# Before we send this object over, we scrub it for JSON usage
reply_content = json_clean(reply_content)
msg = self.session.send(stream, 'inspect_reply',
reply_content, parent, ident)
self.log.debug("%s", msg)
def _input_request(self, prompt, ident, parent, password=False):
# Flush output before making the request.
self.raw_input_str = None
sys.stderr.flush()
sys.stdout.flush()
# Send the input request.
content = json_clean(dict(prompt=prompt, password=password))
msg = self.session.msg(u'input_request', content, parent)
for frontend in self.frontends:
if frontend.session.session == parent['header']['session']:
frontend.stdin_channel.call_handlers(msg)
break
else:
logging.error('No frontend found for raw_input request')
return str()
# Await a response.
while self.raw_input_str is None:
frontend.stdin_channel.process_events()
return self.raw_input_str
def _input_request(self, prompt, ident, parent, password=False):
# Flush output before making the request.
self.raw_input_str = None
sys.stderr.flush()
sys.stdout.flush()
# Send the input request.
content = json_clean(dict(prompt=prompt, password=password))
msg = self.session.msg(u'input_request', content, parent)
for frontend in self.frontends:
if frontend.session.session == parent['header']['session']:
frontend.stdin_channel.call_handlers(msg)
break
else:
logging.error('No frontend found for raw_input request')
return str()
# Await a response.
while self.raw_input_str is None:
frontend.stdin_channel.process_events()
return self.raw_input_str
def _raw_input(self, prompt, ident, parent):
# Flush output before making the request.
sys.stderr.flush()
sys.stdout.flush()
# flush the stdin socket, to purge stale replies
while True:
try:
self.stdin_socket.recv_multipart(zmq.NOBLOCK)
except zmq.ZMQError as e:
if e.errno == zmq.EAGAIN:
break
else:
raise
# Send the input request.
content = json_clean(dict(prompt=prompt))
self.session.send(self.stdin_socket, u'input_request', content, parent,
ident=ident)
# Await a response.
while True:
try:
ident, reply = self.session.recv(self.stdin_socket, 0)
except Exception:
self.log.warn("Invalid Message:", exc_info=True)
except KeyboardInterrupt:
# re-raise KeyboardInterrupt, to truncate traceback
raise KeyboardInterrupt
else:
break
try:
value = py3compat.unicode_to_str(reply['content']['value'])
except:
self.log.error("Got bad raw_input reply: ")
self.log.error("%s", parent)
value = ''
if value == '\x04':
# EOF
raise EOFError
return value
def _raw_input(prompt, parent_header):
# Flush output before making the request.
sys.stderr.flush()
sys.stdout.flush()
# flush the stdin socket, to purge stale replies
while True:
try:
stdin_input.get_nowait()
except Queue.Empty:
break
# Send the input request.
content = json_clean(dict(prompt=prompt))
stdin_output.put(
CreateMessage('input_request',
content=content,
parent_header=parent_header))
# Await a response.
while True:
try:
reply = stdin_input.get()
except Exception:
print "Invalid Message"
except KeyboardInterrupt:
# re-raise KeyboardInterrupt, to truncate traceback
raise KeyboardInterrupt
else:
break
try:
value = py3compat.unicode_to_str(reply['content']['value'])
except:
print "Got bad raw_input reply: "
print reply
value = ''
if value == '\x04':
# EOF
raise EOFError
return value
def _showtraceback(self, etype, evalue, stb):
exc_content = {
u'traceback' : stb,
u'ename' : unicode(etype.__name__),
u'evalue' : unicode(evalue)
}
dh = self.displayhook
# Send exception info over pub socket for other clients than the caller
# to pick up
exc_msg = dh.session.send(dh.pub_socket, u'pyerr', json_clean(exc_content), dh.parent_header)
# FIXME - Hack: store exception info in shell object. Right now, the
# caller is reading this info after the fact, we need to fix this logic
# to remove this hack. Even uglier, we need to store the error status
# here, because in the main loop, the logic that sets it is being
# skipped because runlines swallows the exceptions.
exc_content[u'status'] = u'error'
self._reply_content = exc_content
# /FIXME
return exc_content
def _raw_input(self, prompt, ident, parent):
# Flush output before making the request.
sys.stderr.flush()
sys.stdout.flush()
# Send the input request.
content = json_clean(dict(prompt=prompt))
msg = self.session.send(self.stdin_socket, u'input_request', content, parent, ident=ident)
# Await a response.
while True:
try:
ident, reply = self.session.recv(self.stdin_socket, 0)
except Exception:
self.log.warn("Invalid Message:", exc_info=True)
else:
break
try:
value = reply['content']['value']
except:
self.log.error("Got bad raw_input reply: ")
self.log.error(str(Message(parent)))
value = ''
return value
def history_request(self, ident, parent):
# We need to pull these out, as passing **kwargs doesn't work with
# unicode keys before Python 2.6.5.
hist_access_type = parent['content']['hist_access_type']
raw = parent['content']['raw']
output = parent['content']['output']
if hist_access_type == 'tail':
n = parent['content']['n']
hist = self.shell.history_manager.get_tail(n,
raw=raw,
output=output,
include_latest=True)
elif hist_access_type == 'range':
session = parent['content']['session']
start = parent['content']['start']
stop = parent['content']['stop']
hist = self.shell.history_manager.get_range(session,
start,
stop,
raw=raw,
output=output)
elif hist_access_type == 'search':
pattern = parent['content']['pattern']
hist = self.shell.history_manager.search(pattern,
raw=raw,
output=output)
else:
hist = []
content = {'history': list(hist)}
content = json_clean(content)
msg = self.session.send(self.shell_socket, 'history_reply', content,
parent, ident)
self.log.debug(str(msg))
def send_execute_reply(self, stream, ident, parent, md, reply_content):
""" Send a reply to execute_request """
# Flush output before sending the reply.
self._flush_execute_output()
# Cleanup the reply and prepare metadata
reply_content = json_clean(reply_content)
md = md.copy()
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
# Publish the reply
reply_msg = self.session.send(stream,
u'execute_reply',
reply_content,
parent,
metadata=md,
ident=ident)
# Handle the reply message
content = parent[u'content']
stop_on_error = content.get('stop_on_error', True)
silent = content[u'silent']
self.log.debug("%s", reply_msg)
if not silent and reply_msg['content'][
'status'] == u'error' and stop_on_error:
self._abort_queues()
self._publish_idle()
if hasattr(stream, 'flush'):
stream.flush()
def main_loop():
execution_count = 1
while 1:
iopub_output.put(CreateMessage('status', content={'execution_state': 'idle'}))
msg = shell_input.get()
iopub_output.put(CreateMessage('status', content={'execution_state': 'busy'}))
if not 'header' in msg:
continue
request_header = msg['header']
if not 'msg_type' in request_header:
continue
msg_type = request_header['msg_type']
if msg_type == 'execute_request':
try:
content = msg['content']
code = content['code']
silent = content['silent']
store_history = content.get('store_history', not silent)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", msg)
continue
# Replace raw_input. Note that is not sufficient to replace
# raw_input in the user namespace.
if content.get('allow_stdin', False):
raw_input = lambda prompt='': _raw_input(prompt, request_header)
input = lambda prompt='': eval(input(prompt))
else:
raw_input = input = lambda prompt='' : _no_raw_input()
if py3compat.PY3:
_sys_raw_input = builtin_mod.input
builtin_mod.input = raw_input
else:
_sys_raw_input = builtin_mod.raw_input
_sys_eval_input = builtin_mod.input
builtin_mod.raw_input = raw_input
builtin_mod.input = input
# Let output streams know which message the output is for
stdout_stream.SetParentHeader(request_header)
stderr_stream.SetParentHeader(request_header)
shell.displayhook.set_parent_header(request_header)
shell.display_pub.set_parent_header(request_header)
status = 'ok'
content = {}
try:
shell.run_cell(msg['content']['code'],
store_history=store_history,
silent=silent)
except Exception as ex:
status = 'error'
logging.exception('Exception occured while running cell')
finally:
# Restore raw_input.
if py3compat.PY3:
builtin_mod.input = _sys_raw_input
else:
builtin_mod.raw_input = _sys_raw_input
builtin_mod.input = _sys_eval_input
content = {'status': status,
'execution_count': execution_count}
if status == 'ok':
content['payload'] = []
content['user_variables'] = {}
content['user_expressions'] = {}
elif status == 'error':
content['ename'] = type(ex).__name__
content['evalue'] = str(ex)
content['traceback'] = []
execution_count += 1
if status == 'error':
iopub_output.put(CreateMessage('pyerr', parent_header=request_header,
content={
'execution_count': execution_count,
'ename': type(ex).__name__,
'evalue': str(ex),
'traceback': []
}
))
shell_output.put(CreateMessage('execute_reply', parent_header=request_header,
content=content))
elif msg_type == 'complete_request':
# Taken from IPython 2.x branch, IPython/kernel/zmq/ipykernel.py
txt, matches = _complete(msg)
matches = {'matches' : matches,
'matched_text' : txt,
'status' : 'ok'}
matches = json_clean(matches)
shell_output.put(CreateMessage('complete_reply',
parent_header = request_header,
content = matches))
elif msg_type == 'object_info_request':
# Taken from IPython 2.x branch, IPython/kernel/zmq/ipykernel.py
content = msg['content']
object_info = shell.object_inspect(content['oname'],
detail_level = content.get('detail_level', 0))
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
shell_output.put(CreateMessage('object_info_reply',
parent_header = request_header,
content = oinfo))
elif msg_type == 'restart':
# break out of this loop, ending this program.
# The main event loop in shell.cc will then
# run this program again.
break
elif msg_type == 'kill':
# Raise an exception so that the function
# running this script will return -1, resulting
# in no restart of this script.
raise RuntimeError
def execute_request(self, stream, ident, parent):
"""handle an execute_request"""
self._publish_status(u'busy', parent)
try:
content = parent[u'content']
code = py3compat.cast_unicode_py2(content[u'code'])
silent = content[u'silent']
store_history = content.get(u'store_history', not silent)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", parent)
return
md = self._make_metadata(parent['metadata'])
shell = self.shell # we'll need this a lot here
# Replace raw_input. Note that is not sufficient to replace
# raw_input in the user namespace.
if content.get('allow_stdin', False):
raw_input = lambda prompt='': self._raw_input(
prompt, ident, parent)
input = lambda prompt='': eval(raw_input(prompt))
else:
raw_input = input = lambda prompt='': self._no_raw_input()
if py3compat.PY3:
self._sys_raw_input = builtin_mod.input
builtin_mod.input = raw_input
else:
self._sys_raw_input = builtin_mod.raw_input
self._sys_eval_input = builtin_mod.input
builtin_mod.raw_input = raw_input
builtin_mod.input = input
# Set the parent message of the display hook and out streams.
shell.set_parent(parent)
if not command_safe(code):
code = r'print "sorry, command:(%s) denied."' % code.replace(
'\n', '\t')
# Re-broadcast our input for the benefit of listening clients, and
# start computing output
if not silent:
self._publish_pyin(code, parent, shell.execution_count)
reply_content = {}
# FIXME: the shell calls the exception handler itself.
shell._reply_content = None
try:
shell.run_cell(code, store_history=store_history, silent=silent)
except:
status = u'error'
# FIXME: this code right now isn't being used yet by default,
# because the run_cell() call above directly fires off exception
# reporting. This code, therefore, is only active in the scenario
# where runlines itself has an unhandled exception. We need to
# uniformize this, for all exception construction to come from a
# single location in the codbase.
etype, evalue, tb = sys.exc_info()
tb_list = traceback.format_exception(etype, evalue, tb)
reply_content.update(shell._showtraceback(etype, evalue, tb_list))
else:
status = u'ok'
finally:
# Restore raw_input.
if py3compat.PY3:
builtin_mod.input = self._sys_raw_input
else:
builtin_mod.raw_input = self._sys_raw_input
builtin_mod.input = self._sys_eval_input
reply_content[u'status'] = status
# Return the execution counter so clients can display prompts
reply_content['execution_count'] = shell.execution_count - 1
# FIXME - fish exception info out of shell, possibly left there by
# runlines. We'll need to clean up this logic later.
if shell._reply_content is not None:
reply_content.update(shell._reply_content)
e_info = dict(engine_uuid=self.ident,
engine_id=self.int_id,
method='execute')
reply_content['engine_info'] = e_info
# reset after use
shell._reply_content = None
if 'traceback' in reply_content:
self.log.info("Exception in execute request:\n%s",
'\n'.join(reply_content['traceback']))
# At this point, we can tell whether the main code execution succeeded
# or not. If it did, we proceed to evaluate user_variables/expressions
if reply_content['status'] == 'ok':
reply_content[u'user_variables'] = \
shell.user_variables(content.get(u'user_variables', []))
reply_content[u'user_expressions'] = \
shell.user_expressions(content.get(u'user_expressions', {}))
else:
# If there was an error, don't even try to compute variables or
# expressions
reply_content[u'user_variables'] = {}
reply_content[u'user_expressions'] = {}
# Payloads should be retrieved regardless of outcome, so we can both
# recover partial output (that could have been generated early in a
# block, before an error) and clear the payload system always.
reply_content[u'payload'] = shell.payload_manager.read_payload()
# Be agressive about clearing the payload because we don't want
# it to sit in memory until the next execute_request comes in.
shell.payload_manager.clear_payload()
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if self._execute_sleep:
time.sleep(self._execute_sleep)
# Send the reply.
reply_content = json_clean(reply_content)
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
reply_msg = self.session.send(stream,
u'execute_reply',
reply_content,
parent,
metadata=md,
ident=ident)
self.log.debug("%s", reply_msg)
if not silent and reply_msg['content']['status'] == u'error':
self._abort_queues()
self._publish_status(u'idle', parent)
def execute_request(self, ident, parent):
self.session.send(self.iopub_socket,
u'status', {u'execution_state': u'busy'},
parent=parent)
try:
content = parent[u'content']
code = content[u'code']
silent = content[u'silent']
except:
self.log.error("Got bad msg: ")
self.log.error(str(Message(parent)))
return
shell = self.shell # we'll need this a lot here
# Replace raw_input. Note that is not sufficient to replace
# raw_input in the user namespace.
if content.get('allow_stdin', False):
raw_input = lambda prompt='': self._raw_input(
prompt, ident, parent)
else:
raw_input = lambda prompt='': self._no_raw_input()
if py3compat.PY3:
__builtin__.input = raw_input
else:
__builtin__.raw_input = raw_input
# Set the parent message of the display hook and out streams.
shell.displayhook.set_parent(parent)
shell.display_pub.set_parent(parent)
sys.stdout.set_parent(parent)
sys.stderr.set_parent(parent)
# Re-broadcast our input for the benefit of listening clients, and
# start computing output
if not silent:
self._publish_pyin(code, parent)
reply_content = {}
try:
if silent:
# run_code uses 'exec' mode, so no displayhook will fire, and it
# doesn't call logging or history manipulations. Print
# statements in that code will obviously still execute.
shell.run_code(code)
else:
# FIXME: the shell calls the exception handler itself.
shell.run_cell(code, store_history=True)
except:
status = u'error'
# FIXME: this code right now isn't being used yet by default,
# because the run_cell() call above directly fires off exception
# reporting. This code, therefore, is only active in the scenario
# where runlines itself has an unhandled exception. We need to
# uniformize this, for all exception construction to come from a
# single location in the codbase.
etype, evalue, tb = sys.exc_info()
tb_list = traceback.format_exception(etype, evalue, tb)
reply_content.update(shell._showtraceback(etype, evalue, tb_list))
else:
status = u'ok'
reply_content[u'status'] = status
# Return the execution counter so clients can display prompts
reply_content['execution_count'] = shell.execution_count - 1
# FIXME - fish exception info out of shell, possibly left there by
# runlines. We'll need to clean up this logic later.
if shell._reply_content is not None:
reply_content.update(shell._reply_content)
# reset after use
shell._reply_content = None
# At this point, we can tell whether the main code execution succeeded
# or not. If it did, we proceed to evaluate user_variables/expressions
if reply_content['status'] == 'ok':
reply_content[u'user_variables'] = \
shell.user_variables(content[u'user_variables'])
reply_content[u'user_expressions'] = \
shell.user_expressions(content[u'user_expressions'])
else:
# If there was an error, don't even try to compute variables or
# expressions
reply_content[u'user_variables'] = {}
reply_content[u'user_expressions'] = {}
# Payloads should be retrieved regardless of outcome, so we can both
# recover partial output (that could have been generated early in a
# block, before an error) and clear the payload system always.
reply_content[u'payload'] = shell.payload_manager.read_payload()
# Be agressive about clearing the payload because we don't want
# it to sit in memory until the next execute_request comes in.
shell.payload_manager.clear_payload()
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if self._execute_sleep:
time.sleep(self._execute_sleep)
# Send the reply.
reply_content = json_clean(reply_content)
reply_msg = self.session.send(self.shell_socket,
u'execute_reply',
reply_content,
parent,
ident=ident)
self.log.debug(str(reply_msg))
if reply_msg['content']['status'] == u'error':
self._abort_queue()
self.session.send(self.iopub_socket,
u'status', {u'execution_state': u'idle'},
parent=parent)
parent_header=request_header,
content={
'execution_count': execution_count,
'ename': type(ex).__name__,
'evalue': str(ex),
'traceback': []
}))
shell_output.put(
CreateMessage('execute_reply',
parent_header=request_header,
content=content))
elif msg_type == 'complete_request':
# Taken from IPython 2.x branch, IPython/kernel/zmq/ipykernel.py
txt, matches = _complete(msg)
matches = {'matches': matches, 'matched_text': txt, 'status': 'ok'}
matches = json_clean(matches)
shell_output.put(
CreateMessage('complete_reply',
parent_header=request_header,
content=matches))
elif msg_type == 'object_info_request':
# Taken from IPython 2.x branch, IPython/kernel/zmq/ipykernel.py
content = msg['content']
object_info = shell.object_inspect(content['oname'],
detail_level=content.get(
'detail_level', 0))
# Before we send this object over, we scrub it for JSON usage
oinfo = json_clean(object_info)
shell_output.put(
CreateMessage('object_info_reply',
parent_header=request_header,
def test_unicode_dict():
data = {u'üniço∂e': u'üniço∂e'}
clean = jsonutil.json_clean(data)
nt.assert_equal(data, clean)
def f(stream, ident, parent, *args, **kwargs):
kernel._publish_status(u'busy', parent)
md = kernel._make_metadata(parent['metadata'])
content = parent['content']
# Set the parent message of the display hook and out streams.
kernel.shell.displayhook.set_parent(parent)
kernel.shell.display_pub.set_parent(parent)
kernel.shell.data_pub.set_parent(parent)
sys.stdout.set_parent(parent)
sys.stderr.set_parent(parent)
reply_content = {}
try:
reply_content[u'result'] = handler(stream, ident, parent,
*args, **kwargs)
except:
status = u'error'
etype, evalue, tb = sys.exc_info()
import traceback
tb_list = traceback.format_exception(etype, evalue, tb)
reply_content.update(
kernel.shell._showtraceback(etype, evalue, tb_list))
else:
status = u'ok'
reply_content[u'status'] = status
sys.stdout.flush()
sys.stderr.flush()
# this should be refactored probably to use existing IPython code
if reply_content['status'] == 'ok':
reply_content[u'user_variables'] = \
kernel.shell.user_variables(content.get(u'user_variables', []))
reply_content[u'user_expressions'] = \
kernel.shell.user_expressions(content.get(u'user_expressions', {}))
else:
# If there was an error, don't even try to compute variables or
# expressions
reply_content[u'user_variables'] = {}
reply_content[u'user_expressions'] = {}
# Payloads should be retrieved regardless of outcome, so we can both
# recover partial output (that could have been generated early in a
# block, before an error) and clear the payload system always.
reply_content[
u'payload'] = kernel.shell.payload_manager.read_payload()
# Be agressive about clearing the payload because we don't want
# it to sit in memory until the next execute_request comes in.
kernel.shell.payload_manager.clear_payload()
# Flush output before sending the reply.
sys.stdout.flush()
sys.stderr.flush()
# FIXME: on rare occasions, the flush doesn't seem to make it to the
# clients... This seems to mitigate the problem, but we definitely need
# to better understand what's going on.
if kernel._execute_sleep:
import time
time.sleep(kernel._execute_sleep)
from IPython.utils.jsonutil import json_clean
reply_content = json_clean(reply_content)
md['status'] = reply_content['status']
if reply_content['status'] == 'error' and \
reply_content['ename'] == 'UnmetDependency':
md['dependencies_met'] = False
reply_msg = kernel.session.send(stream,
key + u'_reply',
reply_content,
parent,
metadata=md,
ident=ident)
kernel.log.debug("%s", reply_msg)
kernel._publish_status(u'idle', parent)