|
|
""" ZMQ Kernel History accessor and manager. """
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2010-2011 The IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from IPython.core.history import HistoryAccessorBase
|
|
|
from IPython.utils.traitlets import Dict, List
|
|
|
|
|
|
try:
|
|
|
from queue import Empty # Py 3
|
|
|
except ImportError:
|
|
|
from Queue import Empty # Py 2
|
|
|
|
|
|
class ZMQHistoryManager(HistoryAccessorBase):
|
|
|
"""History accessor and manager for ZMQ-based kernels"""
|
|
|
input_hist_parsed = List([""])
|
|
|
output_hist = Dict()
|
|
|
dir_hist = List()
|
|
|
output_hist_reprs = Dict()
|
|
|
|
|
|
def __init__(self, client):
|
|
|
"""
|
|
|
Class to load the command-line history from a ZMQ-based kernel,
|
|
|
and access the history.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
|
|
|
client: `IPython.kernel.KernelClient`
|
|
|
The kernel client in order to request the history.
|
|
|
"""
|
|
|
self.client = client
|
|
|
|
|
|
def _load_history(self, raw=True, output=False, hist_access_type='range',
|
|
|
**kwargs):
|
|
|
"""
|
|
|
Load the history over ZMQ from the kernel. Wraps the history
|
|
|
messaging with loop to wait to get history results.
|
|
|
"""
|
|
|
history = []
|
|
|
if hasattr(self.client, "history"):
|
|
|
## In tests, KernelClient may not have a history method
|
|
|
msg_id = self.client.history(raw=raw, output=output,
|
|
|
hist_access_type=hist_access_type,
|
|
|
**kwargs)
|
|
|
while True:
|
|
|
try:
|
|
|
reply = self.client.get_shell_msg(timeout=1)
|
|
|
except Empty:
|
|
|
break
|
|
|
else:
|
|
|
if reply['parent_header'].get('msg_id') == msg_id:
|
|
|
history = reply['content'].get('history', [])
|
|
|
break
|
|
|
return history
|
|
|
|
|
|
def get_tail(self, n=10, raw=True, output=False, include_latest=False):
|
|
|
return self._load_history(hist_access_type='tail', n=n, raw=raw,
|
|
|
output=output)
|
|
|
|
|
|
def search(self, pattern="*", raw=True, search_raw=True,
|
|
|
output=False, n=None, unique=False):
|
|
|
return self._load_history(hist_access_type='search', pattern=pattern,
|
|
|
raw=raw, search_raw=search_raw,
|
|
|
output=output, n=n, unique=unique)
|
|
|
|
|
|
def get_range(self, session, start=1, stop=None, raw=True,output=False):
|
|
|
return self._load_history(hist_access_type='range', raw=raw,
|
|
|
output=output, start=start, stop=stop,
|
|
|
session=session)
|
|
|
|
|
|
def get_range_by_str(self, rangestr, raw=True, output=False):
|
|
|
return self._load_history(hist_access_type='range', raw=raw,
|
|
|
output=output, rangestr=rangestr)
|
|
|
|
|
|
def end_session(self):
|
|
|
"""
|
|
|
Nothing to do for ZMQ-based histories.
|
|
|
"""
|
|
|
pass
|
|
|
|
|
|
def reset(self, new_session=True):
|
|
|
"""
|
|
|
Nothing to do for ZMQ-based histories.
|
|
|
"""
|
|
|
pass
|
|
|
|
|
|
|
