class KernelEngine:
"""Manages kernels for one document"""
def __init__(self, settings, document_language):
"""Initializes available kernel names"""
self.__settings = settings
self.__doc_lang = document_language
spec_manager = KernelSpecManager()
kernel_names = spec_manager.find_kernel_specs()
self.__available_kernel_names_mappings = {}
for name in kernel_names:
spec = spec_manager.get_kernel_spec(name)
self.__available_kernel_names_mappings[spec.display_name] = name
self.__manager = MultiKernelManager()
self.__client_managers = {}
def __del__(self):
"""Safe kernels shutdown"""
self.__manager.shutdown_all()
def execute(self,
language,
code,
context,
processing_manager,
output_types=None,
timeout=None,
allow_errors=False):
"""Executes code in specified language within specified context"""
client = self.__get_client(language, context)
return client.execute(code, processing_manager, output_types, timeout,
allow_errors)
def __kernel_name_by_language(self, language):
"""Gets kernel name by language"""
try:
return self.__available_kernel_names_mappings[language]
except KeyError:
raise InvalidLanguageNameError(
language, self.__available_kernel_names_mappings.keys())
def __get_client(self, language, context=None):
"""Returns client dor speciffic language and context"""
kernel_name = self.__kernel_name_by_language(language)
try:
manager = self.__client_managers[kernel_name]
except KeyError:
manager = KernelClientManager(kernel_name, language,
self.__doc_lang, self.__manager,
self.__settings.timeout(language))
self.__client_managers[kernel_name] = manager
return manager.client(context)
def _init_kernel_manager(self):
mkm = MultiKernelManager()
mkm.log_level = 'DEBUG'
mkm.kernel_spec_manager = KernelSpecManager()
mkm.kernel_spec_manager.kernel_dirs.append(
self._kernels_source_dir + '/share/jupyter/kernels')
mkm.kernel_spec_manager.install_kernel_spec(source_dir=self._py_executing_kernel_source_dir,
kernel_name=self.PYTHON_EXECUTING_KERNEL_NAME,
prefix=self._kernels_source_dir)
mkm.kernel_spec_manager.install_kernel_spec(source_dir=self._r_executing_kernel_source_dir,
kernel_name=self.R_EXECUTING_KERNEL_NAME,
prefix=self._kernels_source_dir)
return mkm
class KernelEngine:
"""Manages kernels for one document"""
def __init__(self, settings, document_language):
"""Initializes available kernel names"""
self.__settings = settings
self.__doc_lang = document_language
spec_manager = KernelSpecManager()
kernel_names = spec_manager.find_kernel_specs()
self.__available_kernel_names_mappings = {}
for name in kernel_names:
spec = spec_manager.get_kernel_spec(name)
self.__available_kernel_names_mappings[spec.display_name] = name
self.__manager = MultiKernelManager()
self.__client_managers = {}
def __del__(self):
"""Safe kernels shutdown"""
self.__manager.shutdown_all()
def execute(self, language, code, context, processing_manager, output_types=None, timeout=None, allow_errors=False):
"""Executes code in specified language within specified context"""
client = self.__get_client(language, context)
return client.execute(code, processing_manager, output_types, timeout, allow_errors)
def __kernel_name_by_language(self, language):
"""Gets kernel name by language"""
try:
return self.__available_kernel_names_mappings[language]
except KeyError:
raise InvalidLanguageNameError(language, self.__available_kernel_names_mappings.keys())
def __get_client(self, language, context=None):
"""Returns client dor speciffic language and context"""
kernel_name = self.__kernel_name_by_language(language)
try:
manager = self.__client_managers[kernel_name]
except KeyError:
manager = KernelClientManager(kernel_name, language, self.__doc_lang, self.__manager,
self.__settings.timeout(language))
self.__client_managers[kernel_name] = manager
return manager.client(context)
class PyExecutor(pyexecutor_pb2_grpc.PyExecutorServicer):
def __init__(self):
self.manager = MultiKernelManager()
kernel_id = self.manager.start_kernel()
self.kernel = self.manager.get_kernel(kernel_id)
self.client = BlockingKernelClient()
self.client.load_connection_file(self.kernel.connection_file)
def Execute(self, request, context):
response = self.client.execute_interactive(
code=request.command,
user_expressions={'test': request.expression})
expression = response['content']['user_expressions']['test']['data']
result = expression[
'text/html'] if 'text/html' in expression else expression[
'text/plain']
return pyexecutor_pb2.ExecuteResponse(result=result)
def __init__(self, settings, document_language):
"""Initializes available kernel names"""
self.__settings = settings
self.__doc_lang = document_language
spec_manager = KernelSpecManager()
kernel_names = spec_manager.find_kernel_specs()
self.__available_kernel_names_mappings = {}
for name in kernel_names:
spec = spec_manager.get_kernel_spec(name)
self.__available_kernel_names_mappings[spec.display_name] = name
self.__manager = MultiKernelManager()
self.__client_managers = {}
def do_ipython(self,code):
global km
global km
global remote_id
global remote
global kernelmanager
# python=True
if km==None:
kernelmanager = MultiKernelManager()
remote_id = kernelmanager.start_kernel('python2')
remote_kernel = kernelmanager.get_kernel(remote_id)
remote = remote_kernel.client()
km=remote.blocking_client()
km.start_channels()
if km.shell_channel.msg_ready():
km.shell_channel.get_msg()
km.iopub_channel.get_msg()
#if km.shell_channel.msg_ready():
# km.shell_channel.get_msg()
#if km.iopub_channel.msg_ready():
# km.iopub_channel.get_msg()
km.execute(code)
display_data=[]
msgS=km.shell_channel.get_msg(block=True,timeout=-1)
msg=km.iopub_channel.get_msg(block=True,timeout=-1)
msgs=km.iopub_channel.get_msgs()
for m in msgs:
if m['msg_type']=='error':
output=m['content']['text'] #.__repr__()#+msg+id
display_data.append({'text/plain':output})
break
if m['msg_type']=='stream':
output=m['content']['text'] #.__repr__()#+msg+id
display_data.append({'text/plain':output})
if m['msg_type']=='display_data':
display_data.append(m['content']['data'])
return display_data
def do_ipython(self, code):
global km
global km
global remote_id
global remote
global kernelmanager
# python=True
if km == None:
kernelmanager = MultiKernelManager()
remote_id = kernelmanager.start_kernel('python2')
remote_kernel = kernelmanager.get_kernel(remote_id)
remote = remote_kernel.client()
km = remote.blocking_client()
km.start_channels()
if km.shell_channel.msg_ready():
km.shell_channel.get_msg()
km.iopub_channel.get_msg()
#if km.shell_channel.msg_ready():
# km.shell_channel.get_msg()
#if km.iopub_channel.msg_ready():
# km.iopub_channel.get_msg()
km.execute(code)
display_data = []
msgS = km.shell_channel.get_msg(block=True, timeout=-1)
msg = km.iopub_channel.get_msg(block=True, timeout=-1)
msgs = km.iopub_channel.get_msgs()
for m in msgs:
if m['msg_type'] == 'error':
output = m['content']['text'] #.__repr__()#+msg+id
display_data.append({'text/plain': output})
break
if m['msg_type'] == 'stream':
output = m['content']['text'] #.__repr__()#+msg+id
display_data.append({'text/plain': output})
if m['msg_type'] == 'display_data':
display_data.append(m['content']['data'])
return display_data
def __init__(self, settings, document_language):
"""Initializes available kernel names"""
self.__settings = settings
self.__doc_lang = document_language
spec_manager = KernelSpecManager()
kernel_names = spec_manager.find_kernel_specs()
self.__available_kernel_names_mappings = {}
for name in kernel_names:
spec = spec_manager.get_kernel_spec(name)
self.__available_kernel_names_mappings[spec.display_name] = name
self.__manager = MultiKernelManager()
self.__client_managers = {}
def main():
logging.basicConfig(level=logging.DEBUG)
app = QtGui.QApplication(sys.argv)
window = QtGui.QWidget()
vbox = QtGui.QVBoxLayout()
manager = MultiKernelManager()
client1 = create_kernel_client(manager)
widget1 = RichJupyterWidget(buffer_size=10000)
widget1.kernel_client = client1
client2 = create_kernel_client(manager)
widget2 = RichJupyterWidget(buffer_size=10000)
widget2.kernel_client = client2
vbox.addWidget(widget1)
vbox.addWidget(widget2)
button1 = QtGui.QPushButton("Set up #1")
button1.clicked.connect(lambda: setup_environment(widget1))
button2 = QtGui.QPushButton("Set up #2")
button2.clicked.connect(lambda: setup_environment(widget2))
hbox = QtGui.QHBoxLayout()
hbox.addWidget(button1)
hbox.addWidget(button2)
vbox.addLayout(hbox)
window.setGeometry(QtCore.QRect(300, 300, 1000, 800))
window.setWindowTitle('Two QT consoles connected to the same kernel')
window.setLayout(vbox)
window.show()
window.activateWindow()
window.raise_()
sys.exit(app.exec_())
def kernel(kernel_name):
"""Start a kernel and provide a client to the kernel.
Clean up afterward."""
# Connect to the kernel
multimanager = MultiKernelManager()
uid = multimanager.start_kernel(kernel_name)
manager = multimanager.get_kernel(uid)
client = manager.client()
# Prepare the client; don't do anything until it's ready!
client.start_channels()
client.wait_for_ready()
try:
yield client
finally:
# Remove the connection file
os.remove(client.connection_file)
# Make sure all kernels turn off.
multimanager.shutdown_all()
from jupyter_client import MultiKernelManager mkm = MultiKernelManager() mkm.start_kernel(kernel_id=88472) import notebook.notebookapp as nbapp app = nbapp.NotebookApp(kernel_manager=mkm, kernel_id=88472) app.launch_instance( ) # this launches a notebook, but the kernel manager is not actually passed down in the constructor app.kernel_manager = mkm app.launch_instance() # no effect. need to
# The great "support IPython 2, 3, 4" strat begins
if not TEST:
try:
import jupyter
except ImportError:
jupyter_era = False
else:
jupyter_era = True
if jupyter_era:
# Jupyter / IPython 4.x
from jupyter_client import KernelManager
from jupyter_client.kernelspec import KernelSpecManager
from jupyter_client import MultiKernelManager
kernelSpecManager = KernelSpecManager()
multiKernelManager = MultiKernelManager()
else:
from IPython.kernel import KernelManager
from IPython.kernel.kernelspec import KernelSpecManager
from IPython.kernel.multikernelmanager import MultiKernelManager
kernelSpecManager = KernelSpecManager()
multiKernelManager = MultiKernelManager()
# End of the great "support IPython 2, 3, 4" strat
def _debug_write(out):
if DEBUG:
sys.__stdout__.write(out)
sys.__stdout__.write("\n")
sys.__stdout__.flush()
def __init__(self):
self.manager = MultiKernelManager()
kernel_id = self.manager.start_kernel()
self.kernel = self.manager.get_kernel(kernel_id)
self.client = BlockingKernelClient()
self.client.load_connection_file(self.kernel.connection_file)