def run_notebook(nb):
km = KernelManager()
km.start_kernel(stderr=open(os.devnull, 'w'))
kc = km.client()
kc.start_channels()
try:
kc.wait_for_ready()
except AttributeError:
# IPython < 3
kc.kernel_info()
while True:
msg = kc.get_shell_msg(block=True, timeout=30)
if msg['msg_type'] == 'kernel_info_reply':
break
# Flush IOPub channel
while True:
try:
msg = kc.get_iopub_msg(block=True, timeout=0.2)
except Empty:
break
# simple ping:
kc.execute("pass")
kc.get_shell_msg()
cells = 0
failures = 0
if hasattr(nb, 'worksheets'):
# nobody uses more than 1 worksheet
ws = nb.worksheets[0]
else:
# no more worksheet level in new format
ws = nb
for cell in ws.cells:
if cell.cell_type != 'code':
continue
outputs, failed = run_cell(kc, cell)
cell.outputs = outputs
cell['prompt_number'] = cells
failures += failed
cells += 1
sys.stdout.write('.')
sys.stdout.flush()
print()
print("ran %3i cells" % cells)
if failures:
print(" %3i cells raised exceptions" % failures)
kc.stop_channels()
km.shutdown_kernel()
del km
def run_notebook(nb):
km = KernelManager()
km.start_kernel(stderr=open(os.devnull, 'w'))
kc = km.client()
kc.start_channels()
cells = failures = 0
for cell in nb.cells:
if cell.cell_type != 'code':
continue
kc.execute(cell.source)
# Wait to finish
try:
reply = kc.get_shell_msg()['content']
except Empty:
reply = {'status': 'error', 'traceback': ["Cell execution timed out!"]}
if reply['status'] == 'error':
failures += 1
print("\nFAILURE:")
print(cell.source)
print('-----')
print("Raised:")
print('\n'.join(reply['traceback']))
cells += 1
sys.stdout.write('.')
kc.stop_channels()
km.shutdown_kernel()
return cells, failures
def run_notebook(nb):
"""Run notebook."""
km = KernelManager()
km.start_kernel(stderr=open(os.devnull, 'w'))
kc = km.client()
kc.start_channels()
kc.execute("pass")
kc.get_shell_msg()
cells = 0
failures = 0
for ws in nb.worksheets:
for cell in ws.cells:
if cell.cell_type != 'code':
continue
kc.execute(cell.input)
# wait for finish, maximum 20s
reply = kc.get_shell_msg(timeout=20)['content']
if reply['status'] == 'error':
failures += 1
print("\nFAILURE:")
print(cell.input)
print('-----')
print("raised:")
print('\n'.join(reply['traceback']))
cells += 1
sys.stdout.write('.')
# print "ran notebook %s" % nb.metadata.name
print(" ran %3i cells" % cells)
if failures:
print(" %3i cells raised exceptions" % failures)
kc.stop_channels()
km.shutdown_kernel()
del km
return failures
class GroovyMagics(Magics):
_execution_count = 1
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def __init__(self, shell):
super(GroovyMagics, self).__init__(shell)
self.km = None
def start(self):
self.km = KernelManager()
self.km.kernel_name = 'groovy'
self.km.start_kernel()
atexit.register(self.stop_kernel)
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
print("Groovy started successfully\n")
except AttributeError:
self._wait_for_ready_backport()
def run_cell(self, line, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
reply = self.kc.get_shell_msg()
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
if msg['msg_type'] == 'status':
if msg['content']['execution_state'] == 'idle':
break
except Empty:
print("empty ?!")
raise
self.shell.kernel.session.send(
self.shell.kernel.iopub_socket,
msg['msg_type'],
msg['content'],
metadata=msg['metadata'],
parent=self.shell.kernel._parent_header,
ident=msg.get('comm_id'),
buffers=msg['buffers'],
)
@cell_magic
def groovy(self, line, cell):
return self.run_cell(line, cell)
def get_client(cf, profile=None):
"""
Usage:
>>> kc = get_client('kernel-143a2687-f294-42b1-bdcb-6f1cc2f4cc87.json', 'dale')
>>> data = kc.execute("'123'")
>>> data
{u'text/plain': u'123'}
"""
connection_file = find_connection_file(cf, profile=profile)
km = KernelManager(connection_file=connection_file)
km.load_connection_file()
client = km.client()
return KernelClient(client)
def start_new_kernel(startup_timeout=60, kernel_name='python', **kwargs):
"""Start a new kernel, and return its Manager and Client"""
km = KernelManager(kernel_name=kernel_name,
kernel_spec_manager=NbvalKernelspecManager())
km.start_kernel(**kwargs)
kc = km.client()
kc.start_channels()
try:
kc.wait_for_ready(timeout=startup_timeout)
except RuntimeError:
kc.stop_channels()
km.shutdown_kernel()
raise
return km, kc
def start_new_kernel(startup_timeout=60, kernel_name='python', spykernel=False,
**kwargs):
"""Start a new kernel, and return its Manager and Client"""
km = KernelManager(kernel_name=kernel_name)
if spykernel:
km._kernel_spec = SpyderKernelSpec()
km.start_kernel(**kwargs)
kc = km.client()
kc.start_channels()
try:
kc.wait_for_ready(timeout=startup_timeout)
except RuntimeError:
kc.stop_channels()
km.shutdown_kernel()
raise
return km, kc
def start_new_kernel(startup_timeout=60, kernel_name='python', **kwargs):
"""Start a new kernel, and return its Manager and Client"""
logger.debug('Starting new kernel: "%s"' % kernel_name)
km = KernelManager(kernel_name=kernel_name,
kernel_spec_manager=NbvalKernelspecManager())
km.start_kernel(**kwargs)
kc = km.client()
kc.start_channels()
try:
kc.wait_for_ready(timeout=startup_timeout)
except RuntimeError:
logger.exception('Failure starting kernel "%s"', kernel_name)
kc.stop_channels()
km.shutdown_kernel()
raise
return km, kc
def start_new_kernel(startup_timeout=60, kernel_name='python', spykernel=False,
**kwargs):
"""Start a new kernel, and return its Manager and Client"""
km = KernelManager(kernel_name=kernel_name)
if spykernel:
km._kernel_spec = SpyderKernelSpec()
km.start_kernel(**kwargs)
kc = km.client()
kc.start_channels()
try:
kc.wait_for_ready(timeout=startup_timeout)
except RuntimeError:
kc.stop_channels()
km.shutdown_kernel()
raise
return km, kc
class JVMKernelMagic:
def __init__(self, kernel_name, context):
self.km = None
self.kc = None
self.comms = []
self.kernel_name = kernel_name
self.context = context
self.start()
def start(self):
self.km = KernelManager()
self.km.kernel_name = self.kernel_name
self.km.start_kernel(extra_arguments=[self.context])
self.kc = self.km.client()
self.kc.start_channels()
self.kc.wait_for_ready()
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def run_cell(self, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
def get_shell_msg(self):
return self.kc.get_shell_msg()
def get_iopub_msg(self):
try:
msg = self.kc.get_iopub_msg(timeout=1)
return msg
except Empty:
return None
def pass_msg(self, msg_raw):
msg_json = json.loads(msg_raw)
content = msg_json['content']
msg_type = msg_json['header']['msg_type']
msg = self.kc.session.msg(msg_type, content)
self.kc.shell_channel.send(msg)
return None
class JVMKernelMagic:
def __init__(self, kernel_name, context):
self.km = None
self.kc = None
self.comms = []
self.kernel_name = kernel_name
self.context = context
self.start()
def start(self):
self.km = KernelManager()
self.km.kernel_name = self.kernel_name
self.km.start_kernel(extra_arguments=[self.context])
self.kc = self.km.client()
self.kc.start_channels()
self.kc.wait_for_ready()
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def run_cell(self, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
def get_shell_msg(self):
return self.kc.get_shell_msg()
def get_iopub_msg(self):
try:
msg = self.kc.get_iopub_msg(timeout=1)
return msg
except Empty:
return None
def pass_msg(self, msg_raw):
msg_json = json.loads(msg_raw)
content = msg_json['content']
msg_type = msg_json['header']['msg_type']
msg = self.kc.session.msg(msg_type, content)
self.kc.shell_channel.send(msg)
return None
def test_feature(kernel_name, feature):
print("...{}".format(feature))
manager = KernelManager(kernel_name=kernel_name)
manager.start_kernel()
client = manager.client()
with open(join(feature, "provided.json")) as fp:
provided = json.load(fp)
with open(join(feature, "expected.schema.json")) as fp:
expected = json.load(fp)
msg = client.session.msg(provided['header']['msg_type'],
provided['content'])
client.shell_channel.send(msg)
response = client.shell_channel.get_msg()
jsonschema.validate(instance=response, schema=expected)
def run_notebook(notebook):
"""Run the notebook"""
kernel_manager = KernelManager()
kernel_manager.start_kernel(stderr=open(os.devnull, 'w'))
kernel_client = kernel_manager.client()
kernel_client.start_channels()
for sheet in notebook.worksheets:
for (prompt_number, cell) in enumerate(sheet.cells, 1):
if cell.cell_type != "code":
continue
cell.outputs = run_cell(kernel_client, cell)
cell.prompt_number = prompt_number
if cell.outputs and cell.outputs[0]['output_type'] == 'pyout':
cell.outputs[0]["prompt_number"] = prompt_number
kernel_manager.shutdown_kernel()
def run_notebook(notebook):
"""Run the notebook"""
kernel_manager = KernelManager()
kernel_manager.start_kernel(stderr=open(os.devnull, 'w'))
kernel_client = kernel_manager.client()
kernel_client.start_channels()
for sheet in notebook.worksheets:
for (prompt_number, cell) in enumerate(sheet.cells, 1):
if cell.cell_type != "code":
continue
cell.outputs = run_cell(kernel_client, cell)
cell.prompt_number = prompt_number
if cell.outputs and cell.outputs[0]['output_type'] == 'pyout':
cell.outputs[0]["prompt_number"] = prompt_number
kernel_manager.shutdown_kernel()
def km_from_string(s=''):
"""create kernel manager from IPKernelApp string
such as '--shell=47378 --iopub=39859 --stdin=36778 --hb=52668' for IPython 0.11
or just 'kernel-12345.json' for IPython 0.12
"""
try:
import IPython
except ImportError:
raise ImportError("Could not find IPython. " + _install_instructions)
try:
from traitlets.config.loader import KeyValueConfigLoader
except ImportError: # IPython <= 3.0
from IPython.config.loader import KeyValueConfigLoader
try:
from jupyter_client.manager import KernelManager
from jupyter_client.connect import find_connection_file
except ImportError: # IPython <= 3.0
try:
from IPython.kernel import (
KernelManager,
find_connection_file,
)
except ImportError:
# IPython < 1.0
from IPython.zmq.blockingkernelmanager import BlockingKernelManager as KernelManager
from IPython.zmq.kernelapp import kernel_aliases
try:
from IPython.lib.kernel import find_connection_file
except ImportError:
# < 0.12, no find_connection_file
pass
global km, kc, send
s = s.replace('--existing', '')
if 'connection_file' in KernelManager.class_trait_names():
# 0.12 uses files instead of a collection of ports
# include default IPython search path
# filefind also allows for absolute paths, in which case the search
# is ignored
try:
# XXX: the following approach will be brittle, depending on what
# connection strings will end up looking like in the future, and
# whether or not they are allowed to have spaces. I'll have to sync
# up with the IPython team to address these issues -pi
if '--profile' in s:
k,p = s.split('--profile')
k = k.lstrip().rstrip() # kernel part of the string
p = p.lstrip().rstrip() # profile part of the string
fullpath = find_connection_file(k,p)
else:
s = s.lstrip().rstrip();
if(len(s) == 0):
fullpath = find_connection_file()
else:
fullpath = find_connection_file(s.lstrip().rstrip())
except IOError as e:
echo(":IPython " + s + " failed", "Info")
echo("^-- failed '" + s + "' not found", "Error")
return
km = KernelManager(connection_file = fullpath)
km.load_connection_file()
else:
if s == '':
echo(":IPython 0.11 requires the full connection string")
return
loader = KeyValueConfigLoader(s.split(), aliases=kernel_aliases)
cfg = loader.load_config()['KernelApp']
try:
km = KernelManager(
shell_address=(ip, cfg['shell_port']),
sub_address=(ip, cfg['iopub_port']),
stdin_address=(ip, cfg['stdin_port']),
hb_address=(ip, cfg['hb_port']))
except KeyError as e:
echo(":IPython " +s + " failed", "Info")
echo("^-- failed --"+e.message.replace('_port','')+" not specified", "Error")
return
try:
kc = km.client()
except AttributeError:
# 0.13
kc = km
kc.start_channels()
try:
send = kc.execute
except AttributeError:
# < 3.0
send = kc.shell_channel.execute
#XXX: backwards compatibility for IPython < 0.13
try:
import inspect
sc = kc.shell_channel
num_oinfo_args = len(inspect.getargspec(sc.object_info).args)
if num_oinfo_args == 2:
# patch the object_info method which used to only take one argument
klass = sc.__class__
klass._oinfo_orig = klass.object_info
klass.object_info = lambda s,x,y: s._oinfo_orig(x)
except:
pass
#XXX: backwards compatibility for IPython < 1.0
if not hasattr(kc, 'iopub_channel'):
kc.iopub_channel = kc.sub_channel
# now that we're connect to an ipython kernel, activate completion
# machinery, but do so only for the local buffer if the user added the
# following line the vimrc:
# let g:ipy_completefunc = 'local'
vim.command("""
if g:ipy_completefunc == 'global'
set completefunc=CompleteIPython
elseif g:ipy_completefunc == 'local'
setl completefunc=CompleteIPython
endif
""")
# also activate GUI doc balloons if in gvim
vim.command("""
if has('balloon_eval')
set bexpr=IPythonBalloonExpr()
endif
""")
set_pid()
return km
def km_from_string(s=''):
"""create kernel manager from IPKernelApp string
such as '--shell=47378 --iopub=39859 --stdin=36778 --hb=52668' for IPython 0.11
or just 'kernel-12345.json' for IPython 0.12
"""
try:
import IPython
except ImportError:
raise ImportError("Could not find IPython. " + _install_instructions)
# Modified by BoPeng
#
#from IPython.config.loader import KeyValueConfigLoader
from traitlets.config.loader import KeyValueConfigLoader
try:
# Updated by Bo Peng for module names
from jupyter_client.manager import KernelManager
from jupyter_client import find_connection_file
except ImportError:
# IPython < 1.0
from IPython.zmq.blockingkernelmanager import BlockingKernelManager as KernelManager
from IPython.zmq.kernelapp import kernel_aliases
try:
from IPython.lib.kernel import find_connection_file
except ImportError:
# < 0.12, no find_connection_file
pass
global km, kc, send
s = s.replace('--existing', '')
if 'connection_file' in KernelManager.class_trait_names():
# 0.12 uses files instead of a collection of ports
# include default IPython search path
# filefind also allows for absolute paths, in which case the search
# is ignored
try:
# XXX: the following approach will be brittle, depending on what
# connection strings will end up looking like in the future, and
# whether or not they are allowed to have spaces. I'll have to sync
# up with the IPython team to address these issues -pi
if '--profile' in s:
k,p = s.split('--profile')
k = k.lstrip().rstrip() # kernel part of the string
p = p.lstrip().rstrip() # profile part of the string
fullpath = find_connection_file(k,p)
else:
fullpath = find_connection_file(s.lstrip().rstrip())
except IOError as e:
echo(":IPython " + s + " failed", "Info")
echo("^-- failed '" + s + "' not found", "Error")
return
km = KernelManager(connection_file = fullpath)
km.load_connection_file()
else:
if s == '':
echo(":IPython 0.11 requires the full connection string")
return
loader = KeyValueConfigLoader(s.split(), aliases=kernel_aliases)
cfg = loader.load_config()['KernelApp']
try:
km = KernelManager(
shell_address=(ip, cfg['shell_port']),
sub_address=(ip, cfg['iopub_port']),
stdin_address=(ip, cfg['stdin_port']),
hb_address=(ip, cfg['hb_port']))
except KeyError as e:
echo(":IPython " +s + " failed", "Info")
echo("^-- failed --"+e.message.replace('_port','')+" not specified", "Error")
return
try:
kc = km.client()
except AttributeError:
# 0.13
kc = km
kc.start_channels()
try:
send = kc.execute
except AttributeError:
# < 3.0
send = kc.shell_channel.execute
#XXX: backwards compatibility for IPython < 0.13
try:
import inspect
sc = kc.shell_channel
num_oinfo_args = len(inspect.getargspec(sc.object_info).args)
if num_oinfo_args == 2:
# patch the object_info method which used to only take one argument
klass = sc.__class__
klass._oinfo_orig = klass.object_info
klass.object_info = lambda s,x,y: s._oinfo_orig(x)
except Exception:
pass
#XXX: backwards compatibility for IPython < 1.0
if not hasattr(kc, 'iopub_channel'):
kc.iopub_channel = kc.sub_channel
# now that we're connect to an ipython kernel, activate completion
# machinery, but do so only for the local buffer if the user added the
# following line the vimrc:
# let g:ipy_completefunc = 'local'
vim.command("""
if g:ipy_completefunc == 'global'
set completefunc=CompleteIPython
elseif g:ipy_completefunc == 'local'
setl completefunc=CompleteIPython
endif
""")
# also activate GUI doc balloons if in gvim
vim.command("""
if has('balloon_eval')
set bexpr=IPythonBalloonExpr()
endif
""")
set_pid()
return km
class IPyKernel(object):
"""
A simple wrapper class to run cells in an IPython Notebook.
Notes
-----
- Use `with` construct to properly instantiate
- IPython 3.0.0+ is assumed for this version
"""
def __init__(self, nb_version=4, extra_arguments=None):
# default timeout time is 60 seconds
self.default_timeout = 60
if extra_arguments is None:
extra_arguments = []
self.extra_arguments = extra_arguments
self.nb_version = nb_version
def __enter__(self):
self.km = KernelManager()
self.km.start_kernel(
extra_arguments=self.extra_arguments,
stderr=open(os.devnull, 'w')
)
self.kc = self.km.client()
self.kc.start_channels()
self.iopub = self.kc.iopub_channel
self.shell = self.kc.shell_channel
# run %pylab inline, because some notebooks assume this
# even though they shouldn't
self.shell.send("pass")
self.shell.get_msg()
while True:
try:
self.iopub.get_msg(timeout=0.05)
except Exception as e:
if repr(e) == 'Empty()':
break
# we got a real error so raise it
raise
self.cmd_list = []
self.msg_list = {}
return self
def clear(self):
self.iopub.get_msgs()
def execute(self, cmd):
uid = self.kc.execute(cmd)
self.cmd_list.append((uid, cmd))
return uid
def __exit__(self, exc_type, exc_val, exc_tb):
self.kc.stop_channels()
self.km.shutdown_kernel()
del self.msg_list
del self.cmd_list
del self.km
def listen(self, uid, use_timeout=None):
if use_timeout is None:
use_timeout = self.default_timeout
while True:
if uid in self.msg_list and len(self.msg_list[uid]) > 0:
return self.msg_list[uid].pop(0)
msg = self.iopub.get_msg(timeout=use_timeout)
if 'msg_id' in msg['parent_header']:
msg_uid = msg['parent_header']['msg_id']
if msg_uid not in self.msg_list:
self.msg_list[msg_uid] = []
self.msg_list[msg_uid].append(msg)
def run(self, cell, use_timeout=None):
"""
Run a notebook cell in the IPythonKernel
Parameters
----------
cell : IPython.notebook.Cell
the cell to be run
use_timeout : int or None (default)
the time in seconds after which a cell is stopped and assumed to
have timed out. If set to None the value in `default_timeout`
is used
Returns
-------
list of ex_cell_outputs
a list of NotebookNodes of the returned types. This is
similar to the list of outputs generated when a cell is run
"""
if timeout is not None:
use_timeout = use_timeout
else:
use_timeout = self.default_timeout
if hasattr(cell, 'source'):
uid = self.execute(cell.source)
else:
raise AttributeError('No source/input key')
outs = []
stdout_cells = {}
while True:
msg = self.listen(uid, use_timeout)
msg_type = msg['msg_type']
if msg_type == 'execute_input':
continue
elif msg_type == 'clear_output':
outs = []
continue
elif msg_type == 'status':
if msg['content']['execution_state'] == 'idle':
# we are done with the cell, let's compare
break
continue
out_cell = nbformat.NotebookNode(output_type=msg_type)
content = msg['content']
if msg_type == 'stream':
name = content['name']
if name not in stdout_cells:
out_cell.name = name
out_cell.text = content['text']
stdout_cells[name] = out_cell
outs.append(out_cell)
else:
# we already have a stdout cell, so append to it
stdout_cells[name].text += content['text']
elif msg_type in ('display_data', 'execute_result'):
if hasattr(content, 'execution_count'):
out_cell['execution_count'] = content['execution_count']
else:
out_cell['execution_count'] = None
out_cell['data'] = content['data']
out_cell['metadata'] = content['metadata']
outs.append(out_cell)
elif msg_type == 'error':
out_cell.ename = content['ename']
out_cell.evalue = content['evalue']
out_cell.traceback = content['traceback']
outs.append(out_cell)
elif msg_type.startswith('comm_'):
# messages used to initialize, close and unpdate widgets
# we will ignore these and hope for the best
pass
else:
tv.warning("Unhandled iopub msg of type `%s`" % msg_type)
return outs
def get_commands(self, cell):
"""
Extract potential commands from the first line of a cell
if a code cell starts with the hashbang `#!` it can be followed by
a comma separated list of commands. Each command can be
1. a single key `skip`, or
2. a key/value pair separated by a colon `timeout:[int]`
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
dict
a dict of key/value pairs. For a single command the value is `True`
"""
commands = {}
source = cell.source
if source is not None:
lines = source.splitlines()
if len(lines) > 0:
n_line = 0
line = lines[n_line].strip()
while line.startswith('#!') or len(line) == 0:
txt = line[2:].strip()
parts = txt.split(',')
for part in parts:
subparts = part.split(':')
if len(subparts) == 1:
commands[subparts[0].strip().lower()] = True
elif len(subparts) == 2:
commands[subparts[0].strip().lower()] = subparts[1]
n_line += 1
line = lines[n_line]
return commands
def is_empty_cell(self, cell):
"""
Check if a cell has no code
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
bool
True if the cell has no code, False otherwise
"""
return not bool(cell.source)
class IPyKernel(object):
"""
A simple wrapper class to run cells in an IPython Notebook.
Notes
-----
- Use `with` construct to properly instantiate
- IPython 3.0.0+ is assumed for this version
"""
def __init__(self, nb_version=4, extra_arguments=None):
# default timeout time is 60 seconds
self.default_timeout = 60
if extra_arguments is None:
extra_arguments = []
self.extra_arguments = extra_arguments
self.nb_version = nb_version
def __enter__(self):
self.km = KernelManager()
self.km.start_kernel(
extra_arguments=self.extra_arguments,
stderr=open(os.devnull, 'w')
)
self.kc = self.km.client()
self.kc.start_channels()
self.iopub = self.kc.iopub_channel
self.shell = self.kc.shell_channel
# run %pylab inline, because some notebooks assume this
# even though they shouldn't
self.shell.send("pass")
self.shell.get_msg()
while True:
try:
self.iopub.get_msg(timeout=0.05)
except Empty:
break
return self
def execute(self, source):
self.kc.execute(source + '\n')
self.shell.get_msg(timeout=0.05)
while True:
try:
msg = self.iopub.get_msg(timeout=0.05)
except Empty:
break
def __exit__(self, exc_type, exc_val, exc_tb):
self.kc.stop_channels()
self.km.shutdown_kernel()
del self.km
def run(self, cell, timeout=None):
"""
Run a notebook cell in the IPythonKernel
Parameters
----------
cell : IPython.notebook.Cell
the cell to be run
timeout : int or None (default)
the time in seconds after which a cell is stopped and assumed to
have timed out. If set to None the value in `default_timeout`
is used
Returns
-------
list of outs
a list of NotebookNodes of the returned types. This is
similar to the list of outputs generated when a cell is run
"""
use_timeout = self.default_timeout
if timeout is not None:
use_timeout = timeout
if hasattr(cell, 'input'):
self.kc.execute(cell.input)
elif hasattr(cell, 'source'):
self.kc.execute(cell.source)
else:
raise AttributeError('No source/input key')
self.shell.get_msg(timeout=use_timeout)
outs = []
stdout_cells = {}
while True:
try:
msg = self.iopub.get_msg(timeout=1.00)
except Empty:
break
msg_type = msg['msg_type']
if msg_type in ('pyin', 'execute_input'):
continue
elif msg_type == 'clear_output':
outs = []
continue
elif msg_type == 'status':
if msg['content']['execution_state'] == 'idle':
# we are done with the cell, let's compare
break
continue
content = msg['content']
out = nbformat.NotebookNode(output_type=msg_type)
if msg_type == 'stream':
name = content['name']
if name not in stdout_cells:
out.name = name
out.text = content['text']
stdout_cells[name] = out
outs.append(out)
else:
# we already have a stdout cell, so append to it
stdout_cells[name].text += content['text']
elif msg_type in ('display_data', 'pyout', 'execute_result'):
if hasattr(content, 'execution_count'):
out['execution_count'] = content['execution_count']
else:
out['execution_count'] = None
out['data'] = content['data']
out['metadata'] = content['metadata']
outs.append(out)
elif msg_type == 'error':
out.ename = content['ename']
out.evalue = content['evalue']
out.traceback = content['traceback']
outs.append(out)
elif msg_type.startswith('comm_'):
# messages used to initialize, close and unpdate widgets
# we will ignore these and hope for the best
pass
else:
print "unhandled iopub msg:", msg_type
return outs
@staticmethod
def sanitize(s):
"""sanitize a string for comparison.
fix universal newlines, strip trailing newlines, and normalize likely
random values (memory addresses and UUIDs)
Parameters
----------
s : str
string to be sanitized, i.e. remove UUIDs, Hex-addresses, unnecessary newlines
"""
if not isinstance(s, basestring):
return s
# normalize newline:
s = s.replace('\r\n', '\n')
# ignore trailing newlines (but not space)
s = s.rstrip('\n')
# normalize hex addresses:
s = re.sub(r'0x[a-f0-9]+', '0xFFFFFFFF', s)
# normalize UUIDs:
s = re.sub(r'[a-f0-9]{8}(\-[a-f0-9]{4}){3}\-[a-f0-9]{12}', 'U-U-I-D', s)
# fix problem with
return s
def compare_outputs(
self,
test,
ref,
skip_compare=('traceback', 'latex', 'execution_count')
):
"""
Compare two lists of `NotebookNode`s
Parameters
----------
test : list of `NotebookNode`
the list of be tested generated by the kernel
ref : list of `NotebookNode`
the reference list read from the notebook
skip_compare : list of str
a list of strings that name node types that are not to be tested
Returns
-------
bool
is True if both lists are different
list of diff
a list of diff (str) the represent the differences
"""
diff = False
diff_list = []
# print ref.keys(), test.keys()
if self.nb_version == 4:
for key in ref:
if key not in test:
return True, ["missing key: %s != %s" % (test.keys(), ref.keys())]
elif key not in skip_compare:
if key == 'data':
for data_key in test[key]:
my_diff = self.do_diff(
data_key,
test[key],
ref[key])
if my_diff is not None:
diff_list += my_diff
diff = True
else:
# can this happen?
my_diff = self.do_diff(key, test, ref)
if my_diff is not None:
diff_list += my_diff
diff = True
return diff, diff_list
def do_diff(self, key, test_cell, ref_cell):
"""
Compare the key of two dicts
Parameters
----------
key : string
the key to be compared
test_cell : dict
a dict with `key` as a key of string value
ref_cell : dict
a dict with `key` as a key of string value
Returns
-------
list of diff (str)
a list of diff representing the differences
"""
if hasattr(ref_cell, key):
s1 = self.sanitize(ref_cell[key])
else:
s1 = ''
if hasattr(test_cell, key):
s2 = self.sanitize(test_cell[key])
else:
s2 = ''
if key in ['image/png', 'image/svg', 'image/svg+xml']:
if s1 != s2:
return ['>>> diff in %s (size new : %d vs size old : %d )' %
(key, len(s1), len(s2))]
else:
if s1 != s2:
expected = s1.splitlines(1)
actual = s2.splitlines(1)
diff = difflib.ndiff(expected, actual)
return ['>>> diff in ' + key] + list(diff)
return None
def get_commands(self, cell):
"""
Extract potential commands from the first line of a cell
if a code cell starts with the hashbang `#!` it can be followed by
a comma separated list of commands. Each command can be
1. a single key `skip`, or
2. a key/value pair separated by a colon `timeout:[int]`
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
dict
a dict of key/value pairs. For a single command the value is `True`
"""
commands = {}
source = self.get_source(cell)
if source is not None:
lines = source.splitlines()
if len(lines) > 0:
n_line = 0
line = lines[n_line].strip()
while line.startswith('#!') or len(line) == 0:
txt = line[2:].strip()
parts = txt.split(',')
for part in parts:
subparts = part.split(':')
if len(subparts) == 1:
commands[subparts[0].strip().lower()] = True
elif len(subparts) == 2:
commands[subparts[0].strip().lower()] = subparts[1]
n_line += 1
line = lines[n_line]
return commands
def get_source(self, cell):
"""
get the source code of a cell
Notes
-----
This is legacy of IPython 2/3 conversion.
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
string
the source code
"""
if cell.cell_type == 'code':
if hasattr(cell, 'input'):
return cell.input
elif hasattr(cell, 'source'):
return cell.source
else:
return None
def is_empty_cell(self, cell):
"""
Check if a cell has no code
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
bool
True if the cell has no code, False otherwise
"""
source = self.get_source(cell)
return source is None or source == ''
class KernelMagics(Magics):
_execution_count = 1
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def __init__(self, shell):
super(KernelMagics, self).__init__(shell)
self.km = None
self.kc = None
self.comms = []
def start(self, kernel_name):
self.km = KernelManager()
self.km.kernel_name = kernel_name
self.km.start_kernel(extra_arguments=[self._context_base64()])
atexit.register(self.stop_kernel)
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
print("{} started successfully\n".format(kernel_name.capitalize()))
except AttributeError:
self._wait_for_ready_backport()
def run_cell(self, line, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
reply = self.kc.get_shell_msg()
self._handle_iopub_messages()
def _handle_iopub_messages(self):
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
except Empty:
break
comm_id = msg['content'].get('comm_id')
if comm_id and comm_id not in self.comms:
self.comms.append(comm_id)
self.shell.kernel.session.send(self.shell.kernel.iopub_socket, msg['msg_type'],
msg['content'],
metadata=msg['metadata'],
parent=self.shell.kernel._parent_header,
ident=msg.get('comm_id'),
buffers=msg['buffers'],
)
def pass_message(self, msg_raw):
comm_id = msg_raw['content'].get('comm_id')
if comm_id in self.comms:
content = msg_raw['content']
msg = self.kc.session.msg(msg_raw['msg_type'], content)
self.kc.shell_channel.send(msg)
self._handle_iopub_messages()
else:
self.log.warn("No such comm: %s", comm_id)
if self.log.isEnabledFor(logging.DEBUG):
# don't create the list of keys if debug messages aren't enabled
self.log.debug("Current comms: %s", list(self.comms.keys()))
def _context_base64(self):
context_json = json.dumps({
'port': os.environ["BEAKERX_AUTOTRANSLATION_PORT"],
'contextId': get_ipython().kernel.session.session,
})
return base64.b64encode(context_json.encode('utf-8')).decode()
class KernelMagics(Magics):
_execution_count = 1
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def __init__(self, shell):
super(KernelMagics, self).__init__(shell)
self.km = None
self.kc = None
self.comms = []
def start(self, kernel_name):
self.km = KernelManager()
self.km.kernel_name = kernel_name
self.km.start_kernel(extra_arguments=[self._context_base64()])
atexit.register(self.stop_kernel)
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
print("{} started successfully\n".format(kernel_name.capitalize()))
except AttributeError:
self._wait_for_ready_backport()
def run_cell(self, line, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
reply = self.kc.get_shell_msg()
self._handle_iopub_messages()
def _handle_iopub_messages(self):
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
except Empty:
break
comm_id = msg['content'].get('comm_id')
if comm_id and comm_id not in self.comms:
self.comms.append(comm_id)
self.shell.kernel.session.send(
self.shell.kernel.iopub_socket,
msg['msg_type'],
msg['content'],
metadata=msg['metadata'],
parent=self.shell.kernel._parent_header,
ident=msg.get('comm_id'),
buffers=msg['buffers'],
)
def pass_message(self, msg_raw):
comm_id = msg_raw['content'].get('comm_id')
if comm_id in self.comms:
content = msg_raw['content']
msg = self.kc.session.msg(msg_raw['msg_type'], content)
self.kc.shell_channel.send(msg)
self._handle_iopub_messages()
else:
self.log.warn("No such comm: %s", comm_id)
if self.log.isEnabledFor(logging.DEBUG):
# don't create the list of keys if debug messages aren't enabled
self.log.debug("Current comms: %s", list(self.comms.keys()))
def _context_base64(self):
context_json = json.dumps({
'port':
os.environ["BEAKERX_AUTOTRANSLATION_PORT"],
'contextId':
get_ipython().kernel.session.session,
})
return base64.b64encode(context_json.encode('utf-8')).decode()
class NotebookRunner(object):
# The kernel communicates with mime-types while the notebook
# uses short labels for different cell types. We'll use this to
# map from kernel types to notebook format types.
MIME_MAP = {
'image/jpeg': 'jpeg',
'image/png': 'png',
'text/plain': 'text',
'text/html': 'html',
'text/latex': 'latex',
'application/javascript': 'html',
'image/svg+xml': 'svg',
}
def __init__(self, nb, pylab=False, mpl_inline=False, working_dir=None):
self.km = KernelManager()
args = []
if pylab:
args.append('--pylab=inline')
logging.warn('--pylab is deprecated and will be removed in a '
'future version')
elif mpl_inline:
args.append('--matplotlib=inline')
logging.warn('--matplotlib is deprecated and will be removed in a '
'future version')
cwd = os.getcwd()
if working_dir:
os.chdir(working_dir)
self.km.start_kernel(extra_arguments=args)
os.chdir(cwd)
if platform.system() == 'Darwin':
# There is sometimes a race condition where the first
# execute command hits the kernel before it's ready.
# It appears to happen only on Darwin (Mac OS) and an
# easy (but clumsy) way to mitigate it is to sleep
# for a second.
sleep(1)
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
except AttributeError:
# IPython < 3
self._wait_for_ready_backport()
self.nb = nb
def __del__(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def run_cell(self, cell, cidx):
'''
Run a notebook cell and update the output of that cell in-place.
'''
logging.debug('running cell {}'.format(cidx))
# logging.debug(u'cell.input {}'.format(cell.input))
self.kc.execute(cell.source)
reply = self.kc.get_shell_msg()
status = reply['content']['status']
max_mem = system_memory_used()
logging.info(' memory used: {}'.format(sizeof_fmt(max_mem)))
if status == 'error':
traceback_text = 'Cell raised uncaught exception: \n' + \
'\n'.join(reply['content']['traceback'])
traceback_text = remove_ansicolor(traceback_text)
if 'NoDataFound' not in traceback_text:
logging.error(traceback_text)
else:
logging.debug('run_cell ok')
outs = list()
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
if msg['msg_type'] == 'status':
if msg['content']['execution_state'] == 'idle':
break
except Empty:
# execution state should return to idle before the queue
# becomes empty,
# if it doesn't, something bad has happened
logging.error("empty exception")
raise
content = msg['content']
msg_type = msg['msg_type']
# IPython 3.0.0-dev writes pyerr/pyout in the notebook format but
# uses error/execute_result in the message spec. This does the
# translation needed for tests to pass with IPython 3.0.0-dev
notebook3_format_conversions = {
'error': 'pyerr',
'execute_result': 'pyout'
}
msg_type = notebook3_format_conversions.get(msg_type, msg_type)
out = NotebookNode(output_type=msg_type)
#if 'execution_count' in content:
#cell['prompt_number'] = content['execution_count']
#out.prompt_number = content['execution_count']
if msg_type in ('status', 'pyin', 'execute_input'):
continue
elif msg_type == 'stream':
out.stream = content['name']
if 'text' in content:
out.text = content['text']
else:
out.text = content['data']
# print(out.text, end='')
elif msg_type in ('display_data', 'pyout'):
for mime, data in content['data'].items():
try:
attr = self.MIME_MAP[mime]
except KeyError:
logging.error("unhandled mime")
raise NotImplementedError('unhandled mime type: %s' %
mime)
setattr(out, attr, data)
elif msg_type == 'pyerr':
out.ename = content['ename']
out.evalue = content['evalue']
out.traceback = content['traceback']
elif msg_type == 'clear_output':
outs = list()
continue
else:
logging.error("unhandled iopub")
raise NotImplementedError('unhandled iopub message: %s' %
msg_type)
outs.append(out)
# NOTE: Ver 4 format still have 'pyout', Why?
cell['outputs'] = upgrade_outputs(outs)
logging.debug("status: {}".format(status))
if status == 'error':
if 'NoDataFound' in traceback_text:
raise NoDataFound(traceback_text.split('\n')[-1])
else:
logging.debug(u"NotebookError raised")
raise NotebookError(traceback_text)
def iter_code_cells(self):
'''
Iterate over the notebook cells containing code.
'''
for cell in self.nb['cells']:
if cell.cell_type == 'code':
yield cell
def iter_cells(self):
'''
Iterate over the notebook cells.
'''
for cell in self.nb['cells']:
yield cell
def clear_outputs(self):
for cell in self.iter_cells():
if 'outputs' in cell:
cell['outputs'] = []
@property
def cellcnt(self):
return len(self.nb['cells'])
def run_notebook(self, memory_used=None, progress_cb=None,
skip_exceptions=False):
'''
Run all the cells of a notebook in order and update
the outputs in-place.
If ``skip_exceptions`` is set, then if exceptions occur in a cell, the
subsequent cells are run (by default, the notebook execution stops).
'''
cur = 0
if memory_used is not None:
memory_used.append(system_memory_used())
for cell in self.iter_code_cells():
cur += 1
try:
if progress_cb is not None:
progress_cb(cur)
self.run_cell(cell, cur)
if memory_used is not None:
memory_used.append(system_memory_used())
except NotebookError:
if not skip_exceptions:
raise
class BufferedKernelBase(Kernel):
blocking_msg_types = [
'execute_request',
'history_request',
'complete_request',
'inspect_request',
'kernel_info_request',
'comm_info_request',
'shutdown_request'
]
proxy_channles = ['iopub', 'stdin']
threads = {}
parent_headers = {}
idle_event = Event()
idle_parent_header = None
keyboard_interrupt = False
execute_request_msg_id = None
log_file_object = None
data_dir = Unicode()
@default('data_dir')
def _data_dir_default(self):
app = None
try:
if JupyterApp.initialized():
app = JupyterApp.instance()
except MultipleInstanceError:
pass
if app is None:
# create an app, without the global instance
app = JupyterApp()
app.initialize(argv=[])
return app.data_dir
server_signature_file = Unicode(
help="""The file where the server signature is stored."""
).tag(config=True)
@default('server_signature_file')
def _server_signature_file_default(self):
if 'lc_nblineage_server_signature_path' in os.environ:
return os.environ['lc_nblineage_server_signature_path']
if not self.data_dir:
return ''
return os.path.join(self.data_dir, 'server_signature')
keyword_pattern_file_paths = List()
@default('keyword_pattern_file_paths')
def _keyword_pattern_file_paths_default(self):
return [
os.path.join(self.get_notebook_path(), IPYTHON_DEFAULT_PATTERN_FILE),
os.path.join(os.path.expanduser('~/'), IPYTHON_DEFAULT_PATTERN_FILE)
]
log_dirs = List()
@default('log_dirs')
def _log_dirs_default(self):
return [
os.path.join(self.get_notebook_path(), '.log'),
os.path.expanduser('~/.log')
]
configfile_paths = List()
@default('configfile_paths')
def _configfile_paths_default(self):
return [
os.path.join(self.get_notebook_path(), '.lc_wrapper'),
os.path.join(os.path.expanduser('~/'), '.lc_wrapper')
]
def __init__(self, **kwargs):
Kernel.__init__(self, **kwargs)
if 'lc_wrapper_fluentd_host' in os.environ:
fluentd_host = os.environ['lc_wrapper_fluentd_host']
fluentd_port = int(os.environ.get('lc_wrapper_fluentd_port', '24224'))
fluentd_tag = os.environ.get('lc_wrapper_fluentd_tag', 'lc_wrapper')
self.sender = sender.FluentSender(fluentd_tag,
host=fluentd_host,
port=fluentd_port)
self.log.info('lc_wrapper: Enabled fluent logger: host=%s, port=%s, tag=%s',
fluentd_host, fluentd_port, fluentd_tag)
else:
self.sender = None
self._init_message_handler()
self.start_ipython_kernel()
def _init_message_handler(self):
def handler(self, stream, ident, parent):
self.log.debug("Received shell message: %s", str(parent))
msg_type = parent['msg_type']
content = parent['content']
self._hook_request_msg(parent)
self.idle_event.clear()
self.keyboard_interrupt = False
msg = self.kc.session.msg(msg_type, content)
msgid = msg['header']['msg_id']
self.log.debug("save parent_header: %s => %s", msgid, str(parent['header']))
self.parent_headers[msgid] = parent['header']
self.kc.shell_channel.send(msg)
reply_msg = None
if msg_type in self.blocking_msg_types:
while True:
try:
reply_msg = self.kc._recv_reply(msgid, timeout=None)
break
except KeyboardInterrupt:
self.log.debug("KeyboardInterrupt", exc_info=True)
# propagate SIGINT to wrapped kernel
self.km.interrupt_kernel()
self.keyboard_interrupt = True
# this timer fire when the ipython kernel didnot interrupt within 5.0 sec.
self.timer = Timer(5.0, self.close_files)
self.log.debug('>>>>> close files: timer fired')
self.timer.start()
reply_msg_content = self._hook_reply_msg(reply_msg)
self.log.debug('reply: %s', reply_msg)
reply_msg = self.session.send(stream,
reply_msg['msg_type'],
reply_msg_content,
parent, ident,
header=reply_msg['header'],
metadata=reply_msg['metadata'],
buffers=reply_msg['buffers'])
self._post_send_reply_msg(parent, reply_msg)
self._wait_for_idle(msgid)
self._post_wait_for_idle(parent, reply_msg)
for msg_type in self.msg_types:
if msg_type == 'kernel_info_request':
continue
if msg_type == 'shutdown_request':
continue
self.log.debug('override shell message handler: msg_type=%s', msg_type)
if PY3:
setattr(self, msg_type, MethodType(handler, self))
else:
setattr(self, msg_type, MethodType(handler, self, type(self)))
self.shell_handlers[msg_type] = getattr(self, msg_type)
comm_msg_types = ['comm_open', 'comm_msg', 'comm_close']
for msg_type in comm_msg_types:
self.log.debug('init shell comm message handler: msg_type=%s', msg_type)
if PY3:
setattr(self, msg_type, MethodType(handler, self))
else:
setattr(self, msg_type, MethodType(handler, self, type(self)))
self.shell_handlers[msg_type] = getattr(self, msg_type)
def start_ipython_kernel(self):
kernel_name = self._get_wrapped_kernel_name()
self.km = KernelManager(kernel_name=kernel_name,
client_class='jupyter_client.blocking.BlockingKernelClient')
self.log.debug('kernel_manager: %s', str(self.km))
self.log.info('start wrapped kernel: %s', kernel_name)
self.km.start_kernel()
self.kc = self.km.client()
self.log.debug('kernel_client: %s', str(self.kc))
self.log.debug('start_channels')
self.kc.start_channels()
try:
self.log.debug('wait for ready of wrapped kernel')
self.kc.wait_for_ready(timeout=None)
except RuntimeError:
self.kc.stop_channels()
self.km.shutdown_kernel()
raise
for channel in self.proxy_channles:
stream = getattr(self, channel + '_socket')
thread = ChannelReaderThread(self, self.kc, stream, self.session, channel)
thread.start()
self.threads[channel] = thread
for log_dir in self.log_dirs:
if self._is_writable_dir(log_dir):
self.log_path = log_dir
break
self.log.debug('log output directory: %s', self.log_path)
if self._find_default_keyword_pattern_file() is None:
self.log.info('default keyword pattern file "%s" not found', IPYTHON_DEFAULT_PATTERN_FILE)
try:
self._generate_default_keyword_pattern_file()
except Exception as e:
self.log.exception("failed to generate default keyword pattern file: %s", e)
self.exec_info = None
self.notebook_path = self.get_notebook_path()
self.log.debug('notebook_path: %s', self.notebook_path)
def _is_writable_dir(self, path):
temp_dir = None
try:
if not os.path.exists(path):
os.makedirs(path)
temp_dir = tempfile.mkdtemp(dir=path)
return True
except (OSError, IOError) as e:
self.log.debug("_is_writable_dir: %s", e)
return False
finally:
if temp_dir is not None:
os.rmdir(temp_dir)
def _get_wrapped_kernel_name(self, km):
raise NotImplementedError()
def _remove_parent_header(self, msg_id):
if msg_id in self.parent_headers:
parent_header = self.parent_headers[msg_id]
self.log.debug("remove parent_header: %s => %s", msg_id, str(parent_header))
del self.parent_headers[msg_id]
def _hook_request_msg(self, parent):
msg_type = parent['msg_type']
if msg_type == 'execute_request':
self._hook_execute_request_msg(parent)
def _hook_execute_request_msg(self, parent):
try:
content = parent[u'content']
code = py3compat.cast_unicode_py2(content[u'code'])
silent = content[u'silent']
allow_stdin = content.get('allow_stdin', False)
except:
self.log.error("Got bad msg: ")
self.log.error("%s", parent)
return
self.execute_request_msg_id = parent['header']['msg_id']
if not silent:
self.execution_count += 1
cell_full_id = self._get_cell_id(parent)
if cell_full_id is not None:
cell_uuid, _ = self._parse_cell_id(cell_full_id)
self.log_history_file_path = os.path.join(self.log_path,
cell_uuid,
cell_uuid + u'.json')
else:
self.log_history_file_path = None
self.log_history_id = cell_full_id
self.log_history_data = self._read_log_history_file()
notebook_data = self._get_notebook_data(parent)
self.exec_info = ExecutionInfo(code, self.get_server_signature(), notebook_data)
if not silent:
env = self._get_config()
self.summarize_on, new_code = self.is_summarize_on(code, env)
self._init_default_config()
self._start_log()
if self.summarize_on:
self._start_summarize()
self._load_env(env)
if not self.log_history_id is None:
meme = {'lc_cell_meme': {'current': self.log_history_id}}
self.log_buff_append(u'{}\n----\n'.format(json.dumps(meme)))
self.log_buff_append(u'{}\n----\n'.format(code)) # code
self._log_buff_flush()
self.log_buff_append(self.exec_info.to_logfile_header() + u'----\n')
content[u'code'] = new_code
self._allow_stdin = allow_stdin
def _hook_reply_msg(self, reply_msg):
if reply_msg['msg_type'] == 'execute_reply':
return self._hook_execute_reply_msg(reply_msg)
return reply_msg['content']
def _hook_execute_reply_msg(self, reply):
if hasattr(self, "timer"):
self.timer.cancel()
self.log.debug('>>>>> close files: timer cancelled')
content = reply['content']
content['execution_count'] = self.execution_count
content['lc_wrapper'] = {
'log_path': self.file_full_path
}
self.exec_info.execute_reply_status = content['status']
return content
def _post_send_reply_msg(self, parent, reply_msg):
msg_type = parent['msg_type']
if msg_type == 'execute_request':
content = parent['content']
silent = content['silent']
stop_on_error = content.get('stop_on_error', True)
if not silent and reply_msg['content']['status'] == u'error' and stop_on_error:
self._abort_queues()
def _post_wait_for_idle(self, parent, reply_msg):
if reply_msg is None:
return
if reply_msg['msg_type'] == 'execute_reply':
self.log.debug('flushing stdout stream')
self._send_last_stdout_stream_text()
self.log.debug('flushed stdout stream')
self.execute_request_msg_id = None
def _hook_iopub_msg(self, parent_header, msg):
msg_id = parent_header['msg_id']
content = msg['content']
# replace msg_id in the content
self._replace_msg_id(msg_id, msg['parent_header']['msg_id'], content)
if self.execute_request_msg_id == msg_id:
return self._output_hook(msg)
return content
def _replace_msg_id(self, msg_id, wrapped_msg_id, content):
for k, v in content.items():
if isinstance(v, dict):
self._replace_msg_id(msg_id, wrapped_msg_id, v)
elif v == wrapped_msg_id:
content[k] = msg_id
self.log.debug('replace msg_id in content: %s => %s',
wrapped_msg_id, msg_id)
def _write_log(self, msg):
if not msg is None:
self.log_file_object.write(msg)
self.exec_info.file_size = self.log_file_object.tell()
def open_log_file(self, path):
self.log.debug('>>>>> open_log_file')
now = datetime.now(dateutil.tz.tzlocal())
path = os.path.join(path, now.strftime("%Y%m%d"))
if not os.path.exists(path):
os.makedirs(path)
file_name = now.strftime("%Y%m%d-%H%M%S") + "-%04d" % (now.microsecond // 1000)
self.file_full_path = os.path.join(path, file_name + u'.log')
self.exec_info.log_path = self.file_full_path
self.log_file_object = io.open(self.file_full_path, "a", encoding='utf-8')
self.log.debug(self.file_full_path)
self.log.debug(self.log_file_object)
def close_log_file(self):
self.log.debug('>>>>> close_log_file')
if self.log_file_object is None:
self.log.debug('>>>>> close_log_file: not executed because self.log_file_object is None')
return
if not self.log_file_object.closed:
self.log.debug('>>>>> log file closed')
self.log_file_object.close()
self.send_fluent_log()
else:
self.log.debug('>>>>> close_log_file: not executed because self.log_file_object is already closed')
self.log.debug('close_log_file: self.log_file_object = None')
self.log_file_object = None
def send_fluent_log(self):
if self.sender is None:
return
self.log.debug('>>>>> send_fluent_log')
record = {}
with io.open(self.exec_info.log_path, 'r') as f:
record['log'] = f.read()
self.sender.emit(None, record)
self.log.info('lc_wrapper: send_fluent_log: cell_meme=%s, uid=%s, gid=%s',
self.log_history_id, os.getuid(), os.getgid(), self.get_server_signature())
def get_server_signature(self):
if os.path.exists(self.server_signature_file):
with io.open(self.server_signature_file, 'r') as f:
return f.read()
else:
return None
def _wait_for_idle(self, msg_id):
self.log.debug('waiting for idle: msg_id=%s', msg_id)
while True:
self.idle_event.wait()
if self.idle_parent_header['msg_id'] != msg_id:
self.log.warn('unexpected idle message received: expected msg_id=%s, received msg_id=%s',
msg_id, self.idle_parent_header['msg_id'])
continue
self.log.debug('idle: msg_id=%s', msg_id)
return
def get_notebook_path(self):
return getcwd()
def _find_config_file(self):
for path in self.configfile_paths:
if os.path.exists(path):
return path
return None
def _get_config(self):
env = os.environ
config_path = self._find_config_file()
if config_path is None:
return env
line_pattern = re.compile(r'(\S+)=(".*?"|\S+)')
config = {}
with io.open(config_path, 'r', encoding='utf-8') as f:
for l in f.readlines():
l = l.strip()
if len(l) == 0 or l.startswith('#'):
continue
m = line_pattern.match(l)
if m:
config[m.group(1)] = m.group(2)
else:
self.log.warning('Unexpected line: {} at {}'.format(l, config_path))
for k, v in env.items():
config[k] = v
return config
def send_clear_content_msg(self):
clear_content = {'wait': True}
self.session.send(self.iopub_socket, 'clear_output', clear_content, self._parent_header,
ident=None, buffers=None, track=False, header=None, metadata=None)
def _load_env(self, env):
summarize = env.get(SUMMARIZE_KEY, '')
self.log.debug("lc_wrapper = " + summarize)
summarize_pattern = re.compile(r'^([0-9]*):([0-9]*):([0-9]*):([0-9]*)$')
summarize_params = summarize_pattern.match(summarize)
if summarize_params is not None and len(summarize_params.group(1)) != 0:
self.summarize_start_lines = int(summarize_params.group(1))
if summarize_params is not None and len(summarize_params.group(2)) != 0:
self.summarize_header_lines = int(summarize_params.group(2))
if summarize_params is not None and len(summarize_params.group(3)) != 0:
self.summarize_exec_lines = int(summarize_params.group(3))
if summarize_params is not None and len(summarize_params.group(4)) != 0:
self.summarize_footer_lines = int(summarize_params.group(4))
self.summarize_start_lines = max(self.summarize_start_lines,
self.summarize_header_lines + \
self.summarize_footer_lines + 1)
self.log_history_data = self._read_log_history_file()
if MASKING_KEY in env:
self.masking_pattern = re.compile(env.get(MASKING_KEY))
else:
self.masking_pattern = None
if LOG_MASKING_KEY in env:
self.log_mask = env.get(LOG_MASKING_KEY)
else:
self.log_mask = 'on'
self.repatter = []
text = env.get(IGNORE_SUMMARIZE_KEY, 'file:default')
if text is None or len(text) == 0:
pass
elif 'file:' in text:
file_name = text[text.rfind('find:')+6:].strip()
if file_name == 'default':
file_path = self._find_default_keyword_pattern_file()
else:
file_path = os.path.join(self.notebook_path, file_name)
if file_path is None:
self.keyword_buff_append(u'error : {} Not found'.format(IPYTHON_DEFAULT_PATTERN_FILE))
self.log.warning('lc_wrapper_regex: %s Not found', IPYTHON_DEFAULT_PATTERN_FILE)
elif os.path.exists(file_path):
try:
patterns = self._read_keyword_pattern_file(file_path)
for ptxt in patterns:
self.repatter.append(re.compile(ptxt))
except Exception as e:
self.keyword_buff_append(u'error : ' + str(e))
self.log.exception("lc_wrapper_regex: %s", e)
else:
self.keyword_buff_append(u'error : {} Not found'.format(file_path))
self.log.warning('lc_wrapper_regex: %s Not found', file_path)
else:
try:
self.repatter.append(re.compile(text))
except Exception as e:
self.keyword_buff_append(u'error : ' + str(e))
self.log.exception("lc_wrapper_regex: %s", e)
def _find_default_keyword_pattern_file(self):
for path in self.keyword_pattern_file_paths:
if os.path.exists(path):
return path
return None
def _read_keyword_pattern_file(self, filename):
with open(filename, 'r') as file:
patterns = file.readlines()
patterns = [x.strip() for x in patterns if len(x.strip()) > 0]
self.log.debug('patterns :')
for patt in patterns:
self.log.debug(patt)
return patterns
def _generate_default_keyword_pattern_file(self):
error = None
self.log.info('generate default keyword pattern file')
for path in self.keyword_pattern_file_paths:
if not os.path.exists(path):
try:
with open(path, 'w') as f:
f.write(IPYTHON_DEFAULT_PATTERN)
self.log.info('generated default keyword pattern file: %s', path)
return
except Exception as e:
self.log.debug('_generate_default_keyword_pattern_file: %s', str(e))
error = e
if error is not None:
raise error
def is_summarize_on(self, code, env):
force = None
if FORCE_SUMMARIZE_KEY in env:
force_text = env[FORCE_SUMMARIZE_KEY].strip().lower()
if force_text == 'on':
force = True
elif force_text == 'off':
force = False
regx = r'^\s*!!'
m = re.match(regx, code, re.M)
if m:
return (force if force is not None else True,
code[m.end():])
else:
return (force if force is not None else False,
code)
def _log_buff_flush(self, force=False):
if force or len(self.log_buff) > 100:
self._write_log(u''.join(self.log_buff))
del self.log_buff[:]
def log_buff_append(self, text=None):
if self.block_messages:
return
if not text is None:
if isinstance(text, list):
self.log_buff.extend(text)
else:
self.log_buff.append(text)
def keyword_buff_append(self, text, highlight=True):
if isinstance(text, list):
self.keyword_buff.extend([u'\033[0;31m{}\033[0m'.format(t)
if highlight else t for t in text])
else:
self.keyword_buff.append(u'\033[0;31m{}\033[0m'.format(text)
if highlight else text)
def display_keyword_buff(self):
if len(self.keyword_buff) == 0:
return ''
stream_text = u'...\n'
stream_text += u'\n'.join(self.keyword_buff[:self.summarize_header_lines * 2]) + '\n'
if len(self.keyword_buff) <= self.summarize_header_lines * 2:
return stream_text
msg = u'Matched lines exceed maximum number of view ({})' \
.format(self.summarize_header_lines * 2)
stream_text += u'\033[0;31m{}\033[0m\n'.format(msg)
return stream_text
def highlight_keywords(self, text):
matched = [p.search(text) for p in self.repatter]
matched = [m for m in matched if m is not None]
if len(matched) == 0:
return None
remain = text
result = None
while len(matched) > 0:
left = min([m.start() for m in matched])
if result is None:
result = remain[:left]
else:
result += remain[:left]
keywords = [m.group() for m in matched if m.start() == left]
keyword = sorted(keywords, key=lambda s: len(s))[-1]
result += u'\033[0;31m{}\033[0m'.format(keyword)
remain = remain[left + len(keyword):]
matched = [p.search(remain) for p in self.repatter]
matched = [m for m in matched if m is not None]
return result + remain
def _read_log_history_file(self):
if self.log_history_file_path is not None and \
os.path.exists(self.log_history_file_path):
with open(self.log_history_file_path, 'r') as f:
data = json.load(f)
return data
else:
return []
def _write_log_history_file(self, data):
if self.log_history_file_path is None:
self.log.debug('Skipped to save log history')
return
data.append(self.exec_info.to_log())
pathdir = os.path.dirname(self.log_history_file_path)
if not os.path.exists(pathdir):
os.makedirs(pathdir)
log_full_dir, log_filename = os.path.split(self.file_full_path)
log_full_dir, log_dirname = os.path.split(log_full_dir)
os.symlink(os.path.join('..', log_dirname, log_filename),
os.path.join(pathdir, os.path.basename(self.file_full_path)))
with open(self.log_history_file_path, 'w') as f:
json.dump(data, f)
self.log.debug('Log history saved: {}'.format(self.log_history_file_path))
self.log_history_file_path = None
def close_files(self):
self.log.debug('>>>>> close_files')
if self.log_file_object is not None:
self.exec_info.finished(len(self.keyword_buff))
self.log_buff_append(u'\n----\n{}----\n'.format(self.exec_info.to_logfile_footer()))
for result in self.result_files:
self.log_buff_append(u'result: {}\n'.format(result))
self.log_buff_append(u'execute_reply_status: {}\n'.format(self.exec_info.execute_reply_status))
self.block_messages = True
self._log_buff_flush(force=True)
self.close_log_file()
#save log file path
self._write_log_history_file(self.log_history_data)
def _init_default_config(self):
self.summarize_start_lines = 50
self.summarize_header_lines = 20
self.summarize_exec_lines = 1
self.summarize_footer_lines = 20
def _start_summarize(self):
self.count = 0
self.summarize_header_buff = []
self.summarize_last_buff = []
def _start_log(self):
self.block_messages = False
self.log_buff = []
self.keyword_buff = []
self.result_files = []
self.file_full_path = None
self.log_file_object = None
self.open_log_file(self.log_path)
def _store_result(self, result):
if self.file_full_path is None:
self.log.error('Log file already closed. Skip to store results')
return
log_dir, log_name = os.path.split(self.file_full_path)
log_name_body, _ = os.path.splitext(log_name)
result_file = os.path.join(log_dir,
u'{}-{}.pkl'.format(log_name_body,
len(self.result_files)))
with open(result_file, 'wb') as f:
pickle.dump(result, f)
self.result_files.append(result_file)
def _store_last_lines(self, content_text_list):
# save the last few lines
lines = max(self.summarize_footer_lines, self.summarize_start_lines)
if len(content_text_list) < lines:
if len(content_text_list) + len(self.summarize_last_buff) > lines:
del self.summarize_last_buff[:len(content_text_list)]
self.summarize_last_buff.extend(content_text_list)
else:
del self.summarize_last_buff[:]
self.summarize_last_buff.extend(content_text_list[-lines:])
def _output_hook(self, msg=None):
msg_type = msg['header']['msg_type']
content = msg['content']
if msg_type == 'stream':
if 'ExecutionResult' in content['text']:
return content
else:
masked_text = self._mask_lines(content['text'])
if self.log_mask == 'on':
self.log_buff_append(masked_text)
else :
self.log_buff_append(content['text'])
self._log_buff_flush()
content['text'] = masked_text
content_text_list = content['text'].splitlines(False) # with LF
# save the stderr messages
if content['name'] == 'stderr':
self.keyword_buff_append(content_text_list)
# save the sentences the keyword matched
elif not self.repatter is None and len(self.repatter) > 0:
for text in content_text_list:
matched = self.highlight_keywords(text)
if matched is not None:
self.keyword_buff_append(matched, highlight=False)
if self.summarize_on:
return self._summarize_stream_output(msg, content, content_text_list)
return content
elif msg_type in ('display_data', 'execute_result'):
execute_result = content.copy()
execute_result['execution_count'] = self.execution_count
self._store_result({'msg_type': msg_type, 'content': execute_result})
return execute_result
elif msg_type == 'error':
error_result = content.copy()
error_result['execution_count'] = self.execution_count
if self.log_mask != 'on':
self._store_result({'msg_type': msg_type, 'content': error_result})
for i in range(len(error_result['traceback'])):
error_result['traceback'][i] = self._mask_lines(error_result['traceback'][i])
error_result['evalue'] = self._mask_lines(error_result['evalue'])
if self.log_mask == 'on':
self._store_result({'msg_type': msg_type, 'content': error_result})
return error_result
return content
def _summarize_stream_output(self, msg, content, lines):
# save the first few lines
if len(self.summarize_header_buff) < self.summarize_header_lines:
self.summarize_header_buff.extend(lines)
self._store_last_lines(lines)
if self.count < self.summarize_start_lines:
self.count += len(lines)
stream_content = {'name': content['name'], 'text': content['text']}
else:
self._log_buff_flush()
self.send_clear_content_msg()
stream_text = u''
stream_text += self.exec_info.to_stream() + u'----\n'
stream_text += u'{}\n'.format('\n'.join(self.summarize_header_buff[:self.summarize_header_lines]))
stream_text += self.display_keyword_buff()
stream_text += u'...\n'
stream_text += u'{}'.format('\n'.join(lines[:self.summarize_exec_lines]))
stream_content = {'name': 'stdout', 'text': stream_text}
return stream_content
def _send_last_stdout_stream_text(self):
self.log.debug('_flush_stdout_stream')
self.close_files()
if self.summarize_on:
self._send_last_summarized_stdout_stream_text()
self.result_files = []
def _send_last_summarized_stdout_stream_text(self):
self.send_clear_content_msg()
stream_text = u''
stream_text += self.exec_info.to_stream(len(self.log_history_data)) + u'----\n'
if self.count < self.summarize_start_lines:
stream_text += u'\n'.join(self.summarize_last_buff)
else:
stream_text += u'{}\n'.format('\n'.join(self.summarize_header_buff[:self.summarize_header_lines]))
stream_text += self.display_keyword_buff()
stream_text += u'...\n'
stream_text += u'{}'.format('\n'.join(self.summarize_last_buff[-self.summarize_footer_lines:]))
stream_content = {'name': 'stdout', 'text': stream_text}
self.send_response(self.iopub_socket, 'stream', stream_content)
# Send exeuction result again because last result can be cleared
for resultf in self.result_files:
with open(resultf, 'rb') as f:
result = pickle.load(f)
self.session.send(self.iopub_socket,
result['msg_type'],
result['content'],
self._parent_header,
ident=None,
buffers=None,
track=False,
header=None,
metadata=None)
def _mask_lines(self, string):
if not hasattr(self, 'masking_pattern'):
return string
elif self.masking_pattern is None:
return string
else:
pattern = self.masking_pattern
def asterisks_repl(match):
return len(match[0]) * '*'
return re.sub(pattern, asterisks_repl, string)
def _get_cell_id(self, parent):
if 'content' not in parent:
return None
content = parent['content']
if 'lc_cell_data' not in content:
return None
lc_cell_data = content['lc_cell_data']
if 'lc_cell_meme' not in lc_cell_data:
return None
lc_cell_meme = lc_cell_data['lc_cell_meme']
if 'current' not in lc_cell_meme:
return None
return lc_cell_meme['current']
def _parse_cell_id(self, cell_id):
parts = cell_id.split('-')
return '-'.join(parts[:5]), '-'.join(parts[5:])
def _get_notebook_data(self, parent):
if 'content' not in parent:
return None
content = parent['content']
if 'lc_notebook_data' not in content:
return None
return content['lc_notebook_data']
def do_shutdown(self, restart):
self.log.debug('>>>>> do_shutdown')
self.close_files()
if self.sender is not None:
self.log.debug('close fluent logger sender')
self.sender.close()
self.log.info('stopping wrapped kernel')
if hasattr(self, "km"):
self.km.shutdown_kernel(restart=restart)
for channel, thread in self.threads.items():
self.log.info('stopping %s ChannelReaderThread', channel)
thread.stop()
return {'status': 'ok', 'restart': restart}
class GroovyMagics(Magics):
_execution_count = 1
def stop_kernel(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def __init__(self, shell):
super(GroovyMagics, self).__init__(shell)
self.km = None
self.kc = None
self.comms = []
def start(self):
self.km = KernelManager()
self.km.kernel_name = 'groovy'
self.km.start_kernel()
atexit.register(self.stop_kernel)
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
print("Groovy started successfully\n")
except AttributeError:
self._wait_for_ready_backport()
def run_cell(self, line, code):
if not self.km:
self.start()
self.kc.execute(code, allow_stdin=True)
reply = self.kc.get_shell_msg()
self._handle_iopub_messages()
def _handle_iopub_messages(self):
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
except Empty:
break
comm_id = msg['content'].get('comm_id')
if comm_id and comm_id not in self.comms:
self.comms.append(comm_id)
self.shell.kernel.session.send(
self.shell.kernel.iopub_socket,
msg['msg_type'],
msg['content'],
metadata=msg['metadata'],
parent=self.shell.kernel._parent_header,
ident=msg.get('comm_id'),
buffers=msg['buffers'],
)
def pass_message(self, msg_raw):
comm_id = msg_raw['content'].get('comm_id')
if comm_id in self.comms:
content = msg_raw['content']
msg = self.kc.session.msg(msg_raw['msg_type'], content)
self.kc.shell_channel.send(msg)
self._handle_iopub_messages()
else:
self.log.warn("No such comm: %s", comm_id)
if self.log.isEnabledFor(logging.DEBUG):
# don't create the list of keys if debug messages aren't enabled
self.log.debug("Current comms: %s", list(self.comms.keys()))
@cell_magic
def groovy(self, line, cell):
return self.run_cell(line, cell)
class IPyKernel(object):
"""
A simple wrapper class to run cells in an IPython Notebook.
Notes
-----
- Use `with` construct to properly instantiate
- IPython 3.0.0+ is assumed for this version
"""
def __init__(self, nb_version=4, extra_arguments=None):
# default timeout time is 60 seconds
self.default_timeout = 60
if extra_arguments is None:
extra_arguments = []
self.extra_arguments = extra_arguments
self.nb_version = nb_version
def __enter__(self):
self.km = KernelManager()
self.km.start_kernel(extra_arguments=self.extra_arguments,
stderr=open(os.devnull, 'w'))
self.kc = self.km.client()
self.kc.start_channels()
self.iopub = self.kc.iopub_channel
self.shell = self.kc.shell_channel
# run %pylab inline, because some notebooks assume this
# even though they shouldn't
self.shell.send("pass")
self.shell.get_msg()
while True:
try:
self.iopub.get_msg(timeout=0.05)
except Exception as e:
if repr(e) == 'Empty()':
break
# we got a real error so raise it
raise
self.cmd_list = []
self.msg_list = {}
return self
def clear(self):
self.iopub.get_msgs()
def execute(self, cmd):
uid = self.kc.execute(cmd)
self.cmd_list.append((uid, cmd))
return uid
def __exit__(self, exc_type, exc_val, exc_tb):
self.kc.stop_channels()
self.km.shutdown_kernel()
del self.msg_list
del self.cmd_list
del self.km
def listen(self, uid, use_timeout=None):
if use_timeout is None:
use_timeout = self.default_timeout
while True:
if uid in self.msg_list and len(self.msg_list[uid]) > 0:
return self.msg_list[uid].pop(0)
msg = self.iopub.get_msg(timeout=use_timeout)
if 'msg_id' in msg['parent_header']:
msg_uid = msg['parent_header']['msg_id']
if msg_uid not in self.msg_list:
self.msg_list[msg_uid] = []
self.msg_list[msg_uid].append(msg)
def run(self, cell, use_timeout=None):
"""
Run a notebook cell in the IPythonKernel
Parameters
----------
cell : IPython.notebook.Cell
the cell to be run
use_timeout : int or None (default)
the time in seconds after which a cell is stopped and assumed to
have timed out. If set to None the value in `default_timeout`
is used
Returns
-------
list of ex_cell_outputs
a list of NotebookNodes of the returned types. This is
similar to the list of outputs generated when a cell is run
"""
if timeout is not None:
use_timeout = use_timeout
else:
use_timeout = self.default_timeout
if hasattr(cell, 'source'):
uid = self.execute(cell.source)
else:
raise AttributeError('No source/input key')
outs = []
stdout_cells = {}
while True:
msg = self.listen(uid, use_timeout)
msg_type = msg['msg_type']
if msg_type == 'execute_input':
continue
elif msg_type == 'clear_output':
outs = []
continue
elif msg_type == 'status':
if msg['content']['execution_state'] == 'idle':
# we are done with the cell, let's compare
break
continue
out_cell = nbformat.NotebookNode(output_type=msg_type)
content = msg['content']
if msg_type == 'stream':
name = content['name']
if name not in stdout_cells:
out_cell.name = name
out_cell.text = content['text']
stdout_cells[name] = out_cell
outs.append(out_cell)
else:
# we already have a stdout cell, so append to it
stdout_cells[name].text += content['text']
elif msg_type in ('display_data', 'execute_result'):
if hasattr(content, 'execution_count'):
out_cell['execution_count'] = content['execution_count']
else:
out_cell['execution_count'] = None
out_cell['data'] = content['data']
out_cell['metadata'] = content['metadata']
outs.append(out_cell)
elif msg_type == 'error':
out_cell.ename = content['ename']
out_cell.evalue = content['evalue']
out_cell.traceback = content['traceback']
outs.append(out_cell)
elif msg_type.startswith('comm_'):
# messages used to initialize, close and unpdate widgets
# we will ignore these and hope for the best
pass
else:
tv.warning("Unhandled iopub msg of type `%s`" % msg_type)
return outs
def get_commands(self, cell):
"""
Extract potential commands from the first line of a cell
if a code cell starts with the hashbang `#!` it can be followed by
a comma separated list of commands. Each command can be
1. a single key `skip`, or
2. a key/value pair separated by a colon `timeout:[int]`
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
dict
a dict of key/value pairs. For a single command the value is `True`
"""
commands = {}
source = cell.source
if source is not None:
lines = source.splitlines()
if len(lines) > 0:
n_line = 0
line = lines[n_line].strip()
while line.startswith('#!') or len(line) == 0:
txt = line[2:].strip()
parts = txt.split(',')
for part in parts:
subparts = part.split(':')
if len(subparts) == 1:
commands[subparts[0].strip().lower()] = True
elif len(subparts) == 2:
commands[subparts[0].strip().lower()] = subparts[1]
n_line += 1
line = lines[n_line]
return commands
def is_empty_cell(self, cell):
"""
Check if a cell has no code
Parameters
----------
cell : a NotebookCell
the cell to be examined
Returns
-------
bool
True if the cell has no code, False otherwise
"""
return not bool(cell.source)
class GroovyMagics(Magics):
_execution_count = 1
def __init__(self, shell):
super(GroovyMagics, self).__init__(shell)
self.km = KernelManager()
self.km.kernel_name = 'groovy'
self.km.start_kernel()
self.kc = self.km.client()
self.kc.start_channels()
try:
self.kc.wait_for_ready()
print("Groovy started successfully\n")
except AttributeError:
self._wait_for_ready_backport()
def __del__(self):
self.kc.stop_channels()
self.km.shutdown_kernel(now=True)
def run_cell(self, line, code):
self.kc.execute(code, allow_stdin=True)
reply = self.kc.get_shell_msg()
status = reply['content']['status']
outs = list()
while True:
try:
msg = self.kc.get_iopub_msg(timeout=1)
if msg['msg_type'] == 'status':
if msg['content']['execution_state'] == 'idle':
break
except Empty:
print("empty ?!")
raise
content = msg['content']
msg_type = msg['msg_type']
notebook3_format_conversions = {
'error': 'pyerr',
'execute_result': 'pyout'
}
msg_type = notebook3_format_conversions.get(msg_type, msg_type)
out = NotebookNode(output_type=msg_type)
if msg_type == 'pyout':
print(content['data']['text/plain'])
continue
if msg_type in ('status', 'pyin', 'execute_input'):
continue
elif msg_type in ('comm_open', 'comm_msg', 'comm_close'):
# TODO handle this msg ?!?!?!
continue
elif msg_type == 'stream':
out.stream = content['name']
if 'text' in content:
out.text = content['text']
else:
out.text = content['data']
elif msg_type in ('display_data', 'pyout'):
for mime, data in content['data'].items():
try:
attr = self.MIME_MAP[mime]
except KeyError:
print("unhandled mime")
raise NotImplementedError('unhandled mime type: %s' %
mime)
setattr(out, attr, data)
elif msg_type == 'pyerr':
out.ename = content['ename']
out.evalue = content['evalue']
out.traceback = content['traceback']
elif msg_type == 'clear_output':
outs = list()
continue
else:
print("unhandled " + msg_type)
raise NotImplementedError('unhandled iopub message: %s' %
msg_type)
outs.append(out)
# NOTE: Ver 4 format still have 'pyout', Why?
# upgrade_outputs(outs)
print(str(outs))
print("status: {}".format(status))
@cell_magic
def groovy(self, line, cell):
return self.run_cell(line, cell)