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@@ -1,809 +1,846 b'' | |||||
1 | #!/usr/bin/env python |
|
1 | #!/usr/bin/env python | |
2 | """An interactive kernel that talks to frontends over 0MQ.""" |
|
2 | """An interactive kernel that talks to frontends over 0MQ.""" | |
3 |
|
3 | |||
4 | # Copyright (c) IPython Development Team. |
|
4 | # Copyright (c) IPython Development Team. | |
5 | # Distributed under the terms of the Modified BSD License. |
|
5 | # Distributed under the terms of the Modified BSD License. | |
6 |
|
6 | |||
7 | from __future__ import print_function |
|
7 | from __future__ import print_function | |
8 |
|
8 | |||
9 | import getpass |
|
9 | import getpass | |
10 | import sys |
|
10 | import sys | |
11 | import time |
|
11 | import time | |
12 | import traceback |
|
12 | import traceback | |
13 | import logging |
|
13 | import logging | |
14 | import uuid |
|
14 | import uuid | |
15 |
|
15 | |||
16 | from datetime import datetime |
|
16 | from datetime import datetime | |
17 | from signal import ( |
|
17 | from signal import ( | |
18 | signal, default_int_handler, SIGINT |
|
18 | signal, default_int_handler, SIGINT | |
19 | ) |
|
19 | ) | |
20 |
|
20 | |||
21 | import zmq |
|
21 | import zmq | |
22 | from zmq.eventloop import ioloop |
|
22 | from zmq.eventloop import ioloop | |
23 | from zmq.eventloop.zmqstream import ZMQStream |
|
23 | from zmq.eventloop.zmqstream import ZMQStream | |
24 |
|
24 | |||
25 | from IPython.config.configurable import Configurable |
|
25 | from IPython.config.configurable import Configurable | |
26 | from IPython.core.error import StdinNotImplementedError |
|
26 | from IPython.core.error import StdinNotImplementedError | |
27 | from IPython.core import release |
|
27 | from IPython.core import release | |
28 | from IPython.utils import py3compat |
|
28 | from IPython.utils import py3compat | |
29 | from IPython.utils.py3compat import builtin_mod, unicode_type, string_types |
|
29 | from IPython.utils.py3compat import builtin_mod, unicode_type, string_types | |
30 | from IPython.utils.jsonutil import json_clean |
|
30 | from IPython.utils.jsonutil import json_clean | |
31 | from IPython.utils.traitlets import ( |
|
31 | from IPython.utils.traitlets import ( | |
32 | Any, Instance, Float, Dict, List, Set, Integer, Unicode, |
|
32 | Any, Instance, Float, Dict, List, Set, Integer, Unicode, | |
33 | Type, Bool, |
|
33 | Type, Bool, | |
34 | ) |
|
34 | ) | |
35 |
|
35 | |||
36 | from .serialize import serialize_object, unpack_apply_message |
|
36 | from .serialize import serialize_object, unpack_apply_message | |
37 | from .session import Session |
|
37 | from .session import Session | |
38 | from .zmqshell import ZMQInteractiveShell |
|
38 | from .zmqshell import ZMQInteractiveShell | |
39 |
|
39 | |||
40 |
|
40 | |||
41 | #----------------------------------------------------------------------------- |
|
41 | #----------------------------------------------------------------------------- | |
42 | # Main kernel class |
|
42 | # Main kernel class | |
43 | #----------------------------------------------------------------------------- |
|
43 | #----------------------------------------------------------------------------- | |
44 |
|
44 | |||
45 | protocol_version = release.kernel_protocol_version |
|
45 | protocol_version = release.kernel_protocol_version | |
46 | ipython_version = release.version |
|
46 | ipython_version = release.version | |
47 | language_version = sys.version.split()[0] |
|
47 | language_version = sys.version.split()[0] | |
48 |
|
48 | |||
49 |
|
49 | |||
50 | class Kernel(Configurable): |
|
50 | class Kernel(Configurable): | |
51 |
|
51 | |||
52 | #--------------------------------------------------------------------------- |
|
52 | #--------------------------------------------------------------------------- | |
53 | # Kernel interface |
|
53 | # Kernel interface | |
54 | #--------------------------------------------------------------------------- |
|
54 | #--------------------------------------------------------------------------- | |
55 |
|
55 | |||
56 | # attribute to override with a GUI |
|
56 | # attribute to override with a GUI | |
57 | eventloop = Any(None) |
|
57 | eventloop = Any(None) | |
58 | def _eventloop_changed(self, name, old, new): |
|
58 | def _eventloop_changed(self, name, old, new): | |
59 | """schedule call to eventloop from IOLoop""" |
|
59 | """schedule call to eventloop from IOLoop""" | |
60 | loop = ioloop.IOLoop.instance() |
|
60 | loop = ioloop.IOLoop.instance() | |
61 | loop.add_callback(self.enter_eventloop) |
|
61 | loop.add_callback(self.enter_eventloop) | |
62 |
|
62 | |||
63 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') |
|
63 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') | |
64 | shell_class = Type(ZMQInteractiveShell) |
|
64 | shell_class = Type(ZMQInteractiveShell) | |
65 |
|
65 | |||
66 | session = Instance(Session) |
|
66 | session = Instance(Session) | |
67 | profile_dir = Instance('IPython.core.profiledir.ProfileDir') |
|
67 | profile_dir = Instance('IPython.core.profiledir.ProfileDir') | |
68 | shell_streams = List() |
|
68 | shell_streams = List() | |
69 | control_stream = Instance(ZMQStream) |
|
69 | control_stream = Instance(ZMQStream) | |
70 | iopub_socket = Instance(zmq.Socket) |
|
70 | iopub_socket = Instance(zmq.Socket) | |
71 | stdin_socket = Instance(zmq.Socket) |
|
71 | stdin_socket = Instance(zmq.Socket) | |
72 | log = Instance(logging.Logger) |
|
72 | log = Instance(logging.Logger) | |
73 |
|
73 | |||
74 | user_module = Any() |
|
74 | user_module = Any() | |
75 | def _user_module_changed(self, name, old, new): |
|
75 | def _user_module_changed(self, name, old, new): | |
76 | if self.shell is not None: |
|
76 | if self.shell is not None: | |
77 | self.shell.user_module = new |
|
77 | self.shell.user_module = new | |
78 |
|
78 | |||
79 | user_ns = Instance(dict, args=None, allow_none=True) |
|
79 | user_ns = Instance(dict, args=None, allow_none=True) | |
80 | def _user_ns_changed(self, name, old, new): |
|
80 | def _user_ns_changed(self, name, old, new): | |
81 | if self.shell is not None: |
|
81 | if self.shell is not None: | |
82 | self.shell.user_ns = new |
|
82 | self.shell.user_ns = new | |
83 | self.shell.init_user_ns() |
|
83 | self.shell.init_user_ns() | |
84 |
|
84 | |||
85 | # identities: |
|
85 | # identities: | |
86 | int_id = Integer(-1) |
|
86 | int_id = Integer(-1) | |
87 | ident = Unicode() |
|
87 | ident = Unicode() | |
88 |
|
88 | |||
89 | def _ident_default(self): |
|
89 | def _ident_default(self): | |
90 | return unicode_type(uuid.uuid4()) |
|
90 | return unicode_type(uuid.uuid4()) | |
91 |
|
91 | |||
92 | # Private interface |
|
92 | # Private interface | |
93 |
|
93 | |||
94 | _darwin_app_nap = Bool(True, config=True, |
|
94 | _darwin_app_nap = Bool(True, config=True, | |
95 | help="""Whether to use appnope for compatiblity with OS X App Nap. |
|
95 | help="""Whether to use appnope for compatiblity with OS X App Nap. | |
96 |
|
96 | |||
97 | Only affects OS X >= 10.9. |
|
97 | Only affects OS X >= 10.9. | |
98 | """ |
|
98 | """ | |
99 | ) |
|
99 | ) | |
100 |
|
100 | |||
|
101 | # track associations with current request | |||
|
102 | _allow_stdin = Bool(False) | |||
|
103 | _parent_header = Dict() | |||
|
104 | _parent_ident = Any(b'') | |||
101 | # Time to sleep after flushing the stdout/err buffers in each execute |
|
105 | # Time to sleep after flushing the stdout/err buffers in each execute | |
102 | # cycle. While this introduces a hard limit on the minimal latency of the |
|
106 | # cycle. While this introduces a hard limit on the minimal latency of the | |
103 | # execute cycle, it helps prevent output synchronization problems for |
|
107 | # execute cycle, it helps prevent output synchronization problems for | |
104 | # clients. |
|
108 | # clients. | |
105 | # Units are in seconds. The minimum zmq latency on local host is probably |
|
109 | # Units are in seconds. The minimum zmq latency on local host is probably | |
106 | # ~150 microseconds, set this to 500us for now. We may need to increase it |
|
110 | # ~150 microseconds, set this to 500us for now. We may need to increase it | |
107 | # a little if it's not enough after more interactive testing. |
|
111 | # a little if it's not enough after more interactive testing. | |
108 | _execute_sleep = Float(0.0005, config=True) |
|
112 | _execute_sleep = Float(0.0005, config=True) | |
109 |
|
113 | |||
110 | # Frequency of the kernel's event loop. |
|
114 | # Frequency of the kernel's event loop. | |
111 | # Units are in seconds, kernel subclasses for GUI toolkits may need to |
|
115 | # Units are in seconds, kernel subclasses for GUI toolkits may need to | |
112 | # adapt to milliseconds. |
|
116 | # adapt to milliseconds. | |
113 | _poll_interval = Float(0.05, config=True) |
|
117 | _poll_interval = Float(0.05, config=True) | |
114 |
|
118 | |||
115 | # If the shutdown was requested over the network, we leave here the |
|
119 | # If the shutdown was requested over the network, we leave here the | |
116 | # necessary reply message so it can be sent by our registered atexit |
|
120 | # necessary reply message so it can be sent by our registered atexit | |
117 | # handler. This ensures that the reply is only sent to clients truly at |
|
121 | # handler. This ensures that the reply is only sent to clients truly at | |
118 | # the end of our shutdown process (which happens after the underlying |
|
122 | # the end of our shutdown process (which happens after the underlying | |
119 | # IPython shell's own shutdown). |
|
123 | # IPython shell's own shutdown). | |
120 | _shutdown_message = None |
|
124 | _shutdown_message = None | |
121 |
|
125 | |||
122 | # This is a dict of port number that the kernel is listening on. It is set |
|
126 | # This is a dict of port number that the kernel is listening on. It is set | |
123 | # by record_ports and used by connect_request. |
|
127 | # by record_ports and used by connect_request. | |
124 | _recorded_ports = Dict() |
|
128 | _recorded_ports = Dict() | |
125 |
|
129 | |||
126 | # A reference to the Python builtin 'raw_input' function. |
|
130 | # A reference to the Python builtin 'raw_input' function. | |
127 | # (i.e., __builtin__.raw_input for Python 2.7, builtins.input for Python 3) |
|
131 | # (i.e., __builtin__.raw_input for Python 2.7, builtins.input for Python 3) | |
128 | _sys_raw_input = Any() |
|
132 | _sys_raw_input = Any() | |
129 | _sys_eval_input = Any() |
|
133 | _sys_eval_input = Any() | |
130 |
|
134 | |||
131 | # set of aborted msg_ids |
|
135 | # set of aborted msg_ids | |
132 | aborted = Set() |
|
136 | aborted = Set() | |
133 |
|
137 | |||
134 |
|
138 | |||
135 | def __init__(self, **kwargs): |
|
139 | def __init__(self, **kwargs): | |
136 | super(Kernel, self).__init__(**kwargs) |
|
140 | super(Kernel, self).__init__(**kwargs) | |
137 |
|
141 | |||
138 | # Initialize the InteractiveShell subclass |
|
142 | # Initialize the InteractiveShell subclass | |
139 | self.shell = self.shell_class.instance(parent=self, |
|
143 | self.shell = self.shell_class.instance(parent=self, | |
140 | profile_dir = self.profile_dir, |
|
144 | profile_dir = self.profile_dir, | |
141 | user_module = self.user_module, |
|
145 | user_module = self.user_module, | |
142 | user_ns = self.user_ns, |
|
146 | user_ns = self.user_ns, | |
143 | kernel = self, |
|
147 | kernel = self, | |
144 | ) |
|
148 | ) | |
145 | self.shell.displayhook.session = self.session |
|
149 | self.shell.displayhook.session = self.session | |
146 | self.shell.displayhook.pub_socket = self.iopub_socket |
|
150 | self.shell.displayhook.pub_socket = self.iopub_socket | |
147 | self.shell.displayhook.topic = self._topic('execute_result') |
|
151 | self.shell.displayhook.topic = self._topic('execute_result') | |
148 | self.shell.display_pub.session = self.session |
|
152 | self.shell.display_pub.session = self.session | |
149 | self.shell.display_pub.pub_socket = self.iopub_socket |
|
153 | self.shell.display_pub.pub_socket = self.iopub_socket | |
150 | self.shell.data_pub.session = self.session |
|
154 | self.shell.data_pub.session = self.session | |
151 | self.shell.data_pub.pub_socket = self.iopub_socket |
|
155 | self.shell.data_pub.pub_socket = self.iopub_socket | |
152 |
|
156 | |||
153 | # TMP - hack while developing |
|
157 | # TMP - hack while developing | |
154 | self.shell._reply_content = None |
|
158 | self.shell._reply_content = None | |
155 |
|
159 | |||
156 | # Build dict of handlers for message types |
|
160 | # Build dict of handlers for message types | |
157 | msg_types = [ 'execute_request', 'complete_request', |
|
161 | msg_types = [ 'execute_request', 'complete_request', | |
158 | 'object_info_request', 'history_request', |
|
162 | 'object_info_request', 'history_request', | |
159 | 'kernel_info_request', |
|
163 | 'kernel_info_request', | |
160 | 'connect_request', 'shutdown_request', |
|
164 | 'connect_request', 'shutdown_request', | |
161 | 'apply_request', |
|
165 | 'apply_request', | |
162 | ] |
|
166 | ] | |
163 | self.shell_handlers = {} |
|
167 | self.shell_handlers = {} | |
164 | for msg_type in msg_types: |
|
168 | for msg_type in msg_types: | |
165 | self.shell_handlers[msg_type] = getattr(self, msg_type) |
|
169 | self.shell_handlers[msg_type] = getattr(self, msg_type) | |
166 |
|
170 | |||
167 | comm_msg_types = [ 'comm_open', 'comm_msg', 'comm_close' ] |
|
171 | comm_msg_types = [ 'comm_open', 'comm_msg', 'comm_close' ] | |
168 | comm_manager = self.shell.comm_manager |
|
172 | comm_manager = self.shell.comm_manager | |
169 | for msg_type in comm_msg_types: |
|
173 | for msg_type in comm_msg_types: | |
170 | self.shell_handlers[msg_type] = getattr(comm_manager, msg_type) |
|
174 | self.shell_handlers[msg_type] = getattr(comm_manager, msg_type) | |
171 |
|
175 | |||
172 | control_msg_types = msg_types + [ 'clear_request', 'abort_request' ] |
|
176 | control_msg_types = msg_types + [ 'clear_request', 'abort_request' ] | |
173 | self.control_handlers = {} |
|
177 | self.control_handlers = {} | |
174 | for msg_type in control_msg_types: |
|
178 | for msg_type in control_msg_types: | |
175 | self.control_handlers[msg_type] = getattr(self, msg_type) |
|
179 | self.control_handlers[msg_type] = getattr(self, msg_type) | |
176 |
|
180 | |||
177 |
|
181 | |||
178 | def dispatch_control(self, msg): |
|
182 | def dispatch_control(self, msg): | |
179 | """dispatch control requests""" |
|
183 | """dispatch control requests""" | |
180 | idents,msg = self.session.feed_identities(msg, copy=False) |
|
184 | idents,msg = self.session.feed_identities(msg, copy=False) | |
181 | try: |
|
185 | try: | |
182 | msg = self.session.unserialize(msg, content=True, copy=False) |
|
186 | msg = self.session.unserialize(msg, content=True, copy=False) | |
183 | except: |
|
187 | except: | |
184 | self.log.error("Invalid Control Message", exc_info=True) |
|
188 | self.log.error("Invalid Control Message", exc_info=True) | |
185 | return |
|
189 | return | |
186 |
|
190 | |||
187 | self.log.debug("Control received: %s", msg) |
|
191 | self.log.debug("Control received: %s", msg) | |
188 |
|
192 | |||
189 | header = msg['header'] |
|
193 | header = msg['header'] | |
190 | msg_id = header['msg_id'] |
|
194 | msg_id = header['msg_id'] | |
191 | msg_type = header['msg_type'] |
|
195 | msg_type = header['msg_type'] | |
192 |
|
196 | |||
193 | handler = self.control_handlers.get(msg_type, None) |
|
197 | handler = self.control_handlers.get(msg_type, None) | |
194 | if handler is None: |
|
198 | if handler is None: | |
195 | self.log.error("UNKNOWN CONTROL MESSAGE TYPE: %r", msg_type) |
|
199 | self.log.error("UNKNOWN CONTROL MESSAGE TYPE: %r", msg_type) | |
196 | else: |
|
200 | else: | |
197 | try: |
|
201 | try: | |
198 | handler(self.control_stream, idents, msg) |
|
202 | handler(self.control_stream, idents, msg) | |
199 | except Exception: |
|
203 | except Exception: | |
200 | self.log.error("Exception in control handler:", exc_info=True) |
|
204 | self.log.error("Exception in control handler:", exc_info=True) | |
201 |
|
205 | |||
202 | def dispatch_shell(self, stream, msg): |
|
206 | def dispatch_shell(self, stream, msg): | |
203 | """dispatch shell requests""" |
|
207 | """dispatch shell requests""" | |
204 | # flush control requests first |
|
208 | # flush control requests first | |
205 | if self.control_stream: |
|
209 | if self.control_stream: | |
206 | self.control_stream.flush() |
|
210 | self.control_stream.flush() | |
207 |
|
211 | |||
208 | idents,msg = self.session.feed_identities(msg, copy=False) |
|
212 | idents,msg = self.session.feed_identities(msg, copy=False) | |
209 | try: |
|
213 | try: | |
210 | msg = self.session.unserialize(msg, content=True, copy=False) |
|
214 | msg = self.session.unserialize(msg, content=True, copy=False) | |
211 | except: |
|
215 | except: | |
212 | self.log.error("Invalid Message", exc_info=True) |
|
216 | self.log.error("Invalid Message", exc_info=True) | |
213 | return |
|
217 | return | |
214 |
|
218 | |||
215 | header = msg['header'] |
|
219 | header = msg['header'] | |
216 | msg_id = header['msg_id'] |
|
220 | msg_id = header['msg_id'] | |
217 | msg_type = msg['header']['msg_type'] |
|
221 | msg_type = msg['header']['msg_type'] | |
218 |
|
222 | |||
219 | # Print some info about this message and leave a '--->' marker, so it's |
|
223 | # Print some info about this message and leave a '--->' marker, so it's | |
220 | # easier to trace visually the message chain when debugging. Each |
|
224 | # easier to trace visually the message chain when debugging. Each | |
221 | # handler prints its message at the end. |
|
225 | # handler prints its message at the end. | |
222 | self.log.debug('\n*** MESSAGE TYPE:%s***', msg_type) |
|
226 | self.log.debug('\n*** MESSAGE TYPE:%s***', msg_type) | |
223 | self.log.debug(' Content: %s\n --->\n ', msg['content']) |
|
227 | self.log.debug(' Content: %s\n --->\n ', msg['content']) | |
224 |
|
228 | |||
225 | if msg_id in self.aborted: |
|
229 | if msg_id in self.aborted: | |
226 | self.aborted.remove(msg_id) |
|
230 | self.aborted.remove(msg_id) | |
227 | # is it safe to assume a msg_id will not be resubmitted? |
|
231 | # is it safe to assume a msg_id will not be resubmitted? | |
228 | reply_type = msg_type.split('_')[0] + '_reply' |
|
232 | reply_type = msg_type.split('_')[0] + '_reply' | |
229 | status = {'status' : 'aborted'} |
|
233 | status = {'status' : 'aborted'} | |
230 | md = {'engine' : self.ident} |
|
234 | md = {'engine' : self.ident} | |
231 | md.update(status) |
|
235 | md.update(status) | |
232 | reply_msg = self.session.send(stream, reply_type, metadata=md, |
|
236 | reply_msg = self.session.send(stream, reply_type, metadata=md, | |
233 | content=status, parent=msg, ident=idents) |
|
237 | content=status, parent=msg, ident=idents) | |
234 | return |
|
238 | return | |
235 |
|
239 | |||
236 | handler = self.shell_handlers.get(msg_type, None) |
|
240 | handler = self.shell_handlers.get(msg_type, None) | |
237 | if handler is None: |
|
241 | if handler is None: | |
238 | self.log.error("UNKNOWN MESSAGE TYPE: %r", msg_type) |
|
242 | self.log.error("UNKNOWN MESSAGE TYPE: %r", msg_type) | |
239 | else: |
|
243 | else: | |
240 | # ensure default_int_handler during handler call |
|
244 | # ensure default_int_handler during handler call | |
241 | sig = signal(SIGINT, default_int_handler) |
|
245 | sig = signal(SIGINT, default_int_handler) | |
242 | try: |
|
246 | try: | |
243 | handler(stream, idents, msg) |
|
247 | handler(stream, idents, msg) | |
244 | except Exception: |
|
248 | except Exception: | |
245 | self.log.error("Exception in message handler:", exc_info=True) |
|
249 | self.log.error("Exception in message handler:", exc_info=True) | |
246 | finally: |
|
250 | finally: | |
247 | signal(SIGINT, sig) |
|
251 | signal(SIGINT, sig) | |
248 |
|
252 | |||
249 | def enter_eventloop(self): |
|
253 | def enter_eventloop(self): | |
250 | """enter eventloop""" |
|
254 | """enter eventloop""" | |
251 | self.log.info("entering eventloop %s", self.eventloop) |
|
255 | self.log.info("entering eventloop %s", self.eventloop) | |
252 | for stream in self.shell_streams: |
|
256 | for stream in self.shell_streams: | |
253 | # flush any pending replies, |
|
257 | # flush any pending replies, | |
254 | # which may be skipped by entering the eventloop |
|
258 | # which may be skipped by entering the eventloop | |
255 | stream.flush(zmq.POLLOUT) |
|
259 | stream.flush(zmq.POLLOUT) | |
256 | # restore default_int_handler |
|
260 | # restore default_int_handler | |
257 | signal(SIGINT, default_int_handler) |
|
261 | signal(SIGINT, default_int_handler) | |
258 | while self.eventloop is not None: |
|
262 | while self.eventloop is not None: | |
259 | try: |
|
263 | try: | |
260 | self.eventloop(self) |
|
264 | self.eventloop(self) | |
261 | except KeyboardInterrupt: |
|
265 | except KeyboardInterrupt: | |
262 | # Ctrl-C shouldn't crash the kernel |
|
266 | # Ctrl-C shouldn't crash the kernel | |
263 | self.log.error("KeyboardInterrupt caught in kernel") |
|
267 | self.log.error("KeyboardInterrupt caught in kernel") | |
264 | continue |
|
268 | continue | |
265 | else: |
|
269 | else: | |
266 | # eventloop exited cleanly, this means we should stop (right?) |
|
270 | # eventloop exited cleanly, this means we should stop (right?) | |
267 | self.eventloop = None |
|
271 | self.eventloop = None | |
268 | break |
|
272 | break | |
269 | self.log.info("exiting eventloop") |
|
273 | self.log.info("exiting eventloop") | |
270 |
|
274 | |||
271 | def start(self): |
|
275 | def start(self): | |
272 | """register dispatchers for streams""" |
|
276 | """register dispatchers for streams""" | |
273 | self.shell.exit_now = False |
|
277 | self.shell.exit_now = False | |
274 | if self.control_stream: |
|
278 | if self.control_stream: | |
275 | self.control_stream.on_recv(self.dispatch_control, copy=False) |
|
279 | self.control_stream.on_recv(self.dispatch_control, copy=False) | |
276 |
|
280 | |||
277 | def make_dispatcher(stream): |
|
281 | def make_dispatcher(stream): | |
278 | def dispatcher(msg): |
|
282 | def dispatcher(msg): | |
279 | return self.dispatch_shell(stream, msg) |
|
283 | return self.dispatch_shell(stream, msg) | |
280 | return dispatcher |
|
284 | return dispatcher | |
281 |
|
285 | |||
282 | for s in self.shell_streams: |
|
286 | for s in self.shell_streams: | |
283 | s.on_recv(make_dispatcher(s), copy=False) |
|
287 | s.on_recv(make_dispatcher(s), copy=False) | |
284 |
|
288 | |||
285 | # publish idle status |
|
289 | # publish idle status | |
286 | self._publish_status('starting') |
|
290 | self._publish_status('starting') | |
287 |
|
291 | |||
288 | def do_one_iteration(self): |
|
292 | def do_one_iteration(self): | |
289 | """step eventloop just once""" |
|
293 | """step eventloop just once""" | |
290 | if self.control_stream: |
|
294 | if self.control_stream: | |
291 | self.control_stream.flush() |
|
295 | self.control_stream.flush() | |
292 | for stream in self.shell_streams: |
|
296 | for stream in self.shell_streams: | |
293 | # handle at most one request per iteration |
|
297 | # handle at most one request per iteration | |
294 | stream.flush(zmq.POLLIN, 1) |
|
298 | stream.flush(zmq.POLLIN, 1) | |
295 | stream.flush(zmq.POLLOUT) |
|
299 | stream.flush(zmq.POLLOUT) | |
296 |
|
300 | |||
297 |
|
301 | |||
298 | def record_ports(self, ports): |
|
302 | def record_ports(self, ports): | |
299 | """Record the ports that this kernel is using. |
|
303 | """Record the ports that this kernel is using. | |
300 |
|
304 | |||
301 | The creator of the Kernel instance must call this methods if they |
|
305 | The creator of the Kernel instance must call this methods if they | |
302 | want the :meth:`connect_request` method to return the port numbers. |
|
306 | want the :meth:`connect_request` method to return the port numbers. | |
303 | """ |
|
307 | """ | |
304 | self._recorded_ports = ports |
|
308 | self._recorded_ports = ports | |
305 |
|
309 | |||
306 | #--------------------------------------------------------------------------- |
|
310 | #--------------------------------------------------------------------------- | |
307 | # Kernel request handlers |
|
311 | # Kernel request handlers | |
308 | #--------------------------------------------------------------------------- |
|
312 | #--------------------------------------------------------------------------- | |
309 |
|
313 | |||
310 | def _make_metadata(self, other=None): |
|
314 | def _make_metadata(self, other=None): | |
311 | """init metadata dict, for execute/apply_reply""" |
|
315 | """init metadata dict, for execute/apply_reply""" | |
312 | new_md = { |
|
316 | new_md = { | |
313 | 'dependencies_met' : True, |
|
317 | 'dependencies_met' : True, | |
314 | 'engine' : self.ident, |
|
318 | 'engine' : self.ident, | |
315 | 'started': datetime.now(), |
|
319 | 'started': datetime.now(), | |
316 | } |
|
320 | } | |
317 | if other: |
|
321 | if other: | |
318 | new_md.update(other) |
|
322 | new_md.update(other) | |
319 | return new_md |
|
323 | return new_md | |
320 |
|
324 | |||
321 | def _publish_execute_input(self, code, parent, execution_count): |
|
325 | def _publish_execute_input(self, code, parent, execution_count): | |
322 | """Publish the code request on the iopub stream.""" |
|
326 | """Publish the code request on the iopub stream.""" | |
323 |
|
327 | |||
324 | self.session.send(self.iopub_socket, u'execute_input', |
|
328 | self.session.send(self.iopub_socket, u'execute_input', | |
325 | {u'code':code, u'execution_count': execution_count}, |
|
329 | {u'code':code, u'execution_count': execution_count}, | |
326 | parent=parent, ident=self._topic('execute_input') |
|
330 | parent=parent, ident=self._topic('execute_input') | |
327 | ) |
|
331 | ) | |
328 |
|
332 | |||
329 | def _publish_status(self, status, parent=None): |
|
333 | def _publish_status(self, status, parent=None): | |
330 | """send status (busy/idle) on IOPub""" |
|
334 | """send status (busy/idle) on IOPub""" | |
331 | self.session.send(self.iopub_socket, |
|
335 | self.session.send(self.iopub_socket, | |
332 | u'status', |
|
336 | u'status', | |
333 | {u'execution_state': status}, |
|
337 | {u'execution_state': status}, | |
334 | parent=parent, |
|
338 | parent=parent, | |
335 | ident=self._topic('status'), |
|
339 | ident=self._topic('status'), | |
336 | ) |
|
340 | ) | |
337 |
|
341 | |||
338 |
def _forward_ |
|
342 | def _forward_input(self, allow_stdin=False): | |
339 | """Replace raw_input. Note that is not sufficient to replace |
|
343 | """Forward raw_input and getpass to the current frontend. | |
340 | raw_input in the user namespace. |
|
344 | ||
|
345 | via input_request | |||
341 | """ |
|
346 | """ | |
|
347 | self._allow_stdin = allow_stdin | |||
342 |
|
348 | |||
343 | if allow_stdin: |
|
|||
344 | raw_input = lambda prompt='': self._raw_input(prompt, ident, parent) |
|
|||
345 | input = lambda prompt='': eval(raw_input(prompt)) |
|
|||
346 | _getpass = lambda prompt='', stream=None: self._raw_input( |
|
|||
347 | prompt, ident, parent, password=True |
|
|||
348 | ) |
|
|||
349 | else: |
|
|||
350 | _getpass = raw_input = input = lambda prompt='' : self._no_raw_input() |
|
|||
351 |
|
||||
352 |
|
||||
353 | if py3compat.PY3: |
|
349 | if py3compat.PY3: | |
354 | self._sys_raw_input = builtin_mod.input |
|
350 | self._sys_raw_input = builtin_mod.input | |
355 | builtin_mod.input = raw_input |
|
351 | builtin_mod.input = self.raw_input | |
356 | else: |
|
352 | else: | |
357 | self._sys_raw_input = builtin_mod.raw_input |
|
353 | self._sys_raw_input = builtin_mod.raw_input | |
358 | self._sys_eval_input = builtin_mod.input |
|
354 | self._sys_eval_input = builtin_mod.input | |
359 | builtin_mod.raw_input = raw_input |
|
355 | builtin_mod.raw_input = self.raw_input | |
360 | builtin_mod.input = input |
|
356 | builtin_mod.input = lambda prompt='': eval(self.raw_input(prompt)) | |
361 | self._save_getpass = getpass.getpass |
|
357 | self._save_getpass = getpass.getpass | |
362 |
getpass.getpass = |
|
358 | getpass.getpass = self.getpass | |
363 |
|
359 | |||
364 |
def _restore_ |
|
360 | def _restore_input(self): | |
365 |
|
|
361 | """Restore raw_input, getpass""" | |
366 | if py3compat.PY3: |
|
362 | if py3compat.PY3: | |
367 | builtin_mod.input = self._sys_raw_input |
|
363 | builtin_mod.input = self._sys_raw_input | |
368 | else: |
|
364 | else: | |
369 | builtin_mod.raw_input = self._sys_raw_input |
|
365 | builtin_mod.raw_input = self._sys_raw_input | |
370 | builtin_mod.input = self._sys_eval_input |
|
366 | builtin_mod.input = self._sys_eval_input | |
371 |
|
367 | |||
372 | getpass.getpass = self._save_getpass |
|
368 | getpass.getpass = self._save_getpass | |
373 |
|
369 | |||
|
370 | def set_parent(self, ident, parent): | |||
|
371 | """Record the parent state | |||
|
372 | ||||
|
373 | For associating side effects with their requests. | |||
|
374 | """ | |||
|
375 | self._parent_ident = ident | |||
|
376 | self._parent_header = parent | |||
|
377 | self.shell.set_parent(parent) | |||
|
378 | ||||
374 | def execute_request(self, stream, ident, parent): |
|
379 | def execute_request(self, stream, ident, parent): | |
375 | """handle an execute_request""" |
|
380 | """handle an execute_request""" | |
376 |
|
381 | |||
377 | self._publish_status(u'busy', parent) |
|
382 | self._publish_status(u'busy', parent) | |
378 |
|
383 | |||
379 | try: |
|
384 | try: | |
380 | content = parent[u'content'] |
|
385 | content = parent[u'content'] | |
381 | code = py3compat.cast_unicode_py2(content[u'code']) |
|
386 | code = py3compat.cast_unicode_py2(content[u'code']) | |
382 | silent = content[u'silent'] |
|
387 | silent = content[u'silent'] | |
383 | store_history = content.get(u'store_history', not silent) |
|
388 | store_history = content.get(u'store_history', not silent) | |
384 | except: |
|
389 | except: | |
385 | self.log.error("Got bad msg: ") |
|
390 | self.log.error("Got bad msg: ") | |
386 | self.log.error("%s", parent) |
|
391 | self.log.error("%s", parent) | |
387 | return |
|
392 | return | |
388 |
|
393 | |||
389 | md = self._make_metadata(parent['metadata']) |
|
394 | md = self._make_metadata(parent['metadata']) | |
390 |
|
395 | |||
391 | shell = self.shell # we'll need this a lot here |
|
396 | shell = self.shell # we'll need this a lot here | |
392 |
|
397 | |||
393 |
self._forward_ |
|
398 | self._forward_input(content.get('allow_stdin', False)) | |
394 |
|
||||
395 | # Set the parent message of the display hook and out streams. |
|
399 | # Set the parent message of the display hook and out streams. | |
396 |
s |
|
400 | self.set_parent(ident, parent) | |
397 |
|
401 | |||
398 | # Re-broadcast our input for the benefit of listening clients, and |
|
402 | # Re-broadcast our input for the benefit of listening clients, and | |
399 | # start computing output |
|
403 | # start computing output | |
400 | if not silent: |
|
404 | if not silent: | |
401 | self._publish_execute_input(code, parent, shell.execution_count) |
|
405 | self._publish_execute_input(code, parent, shell.execution_count) | |
402 |
|
406 | |||
403 | reply_content = {} |
|
407 | reply_content = {} | |
404 | # FIXME: the shell calls the exception handler itself. |
|
408 | # FIXME: the shell calls the exception handler itself. | |
405 | shell._reply_content = None |
|
409 | shell._reply_content = None | |
406 | try: |
|
410 | try: | |
407 | shell.run_cell(code, store_history=store_history, silent=silent) |
|
411 | shell.run_cell(code, store_history=store_history, silent=silent) | |
408 | except: |
|
412 | except: | |
409 | status = u'error' |
|
413 | status = u'error' | |
410 | # FIXME: this code right now isn't being used yet by default, |
|
414 | # FIXME: this code right now isn't being used yet by default, | |
411 | # because the run_cell() call above directly fires off exception |
|
415 | # because the run_cell() call above directly fires off exception | |
412 | # reporting. This code, therefore, is only active in the scenario |
|
416 | # reporting. This code, therefore, is only active in the scenario | |
413 | # where runlines itself has an unhandled exception. We need to |
|
417 | # where runlines itself has an unhandled exception. We need to | |
414 | # uniformize this, for all exception construction to come from a |
|
418 | # uniformize this, for all exception construction to come from a | |
415 | # single location in the codbase. |
|
419 | # single location in the codbase. | |
416 | etype, evalue, tb = sys.exc_info() |
|
420 | etype, evalue, tb = sys.exc_info() | |
417 | tb_list = traceback.format_exception(etype, evalue, tb) |
|
421 | tb_list = traceback.format_exception(etype, evalue, tb) | |
418 | reply_content.update(shell._showtraceback(etype, evalue, tb_list)) |
|
422 | reply_content.update(shell._showtraceback(etype, evalue, tb_list)) | |
419 | else: |
|
423 | else: | |
420 | status = u'ok' |
|
424 | status = u'ok' | |
421 | finally: |
|
425 | finally: | |
422 |
self._restore_ |
|
426 | self._restore_input() | |
423 |
|
427 | |||
424 | reply_content[u'status'] = status |
|
428 | reply_content[u'status'] = status | |
425 |
|
429 | |||
426 | # Return the execution counter so clients can display prompts |
|
430 | # Return the execution counter so clients can display prompts | |
427 | reply_content['execution_count'] = shell.execution_count - 1 |
|
431 | reply_content['execution_count'] = shell.execution_count - 1 | |
428 |
|
432 | |||
429 | # FIXME - fish exception info out of shell, possibly left there by |
|
433 | # FIXME - fish exception info out of shell, possibly left there by | |
430 | # runlines. We'll need to clean up this logic later. |
|
434 | # runlines. We'll need to clean up this logic later. | |
431 | if shell._reply_content is not None: |
|
435 | if shell._reply_content is not None: | |
432 | reply_content.update(shell._reply_content) |
|
436 | reply_content.update(shell._reply_content) | |
433 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='execute') |
|
437 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='execute') | |
434 | reply_content['engine_info'] = e_info |
|
438 | reply_content['engine_info'] = e_info | |
435 | # reset after use |
|
439 | # reset after use | |
436 | shell._reply_content = None |
|
440 | shell._reply_content = None | |
437 |
|
441 | |||
438 | if 'traceback' in reply_content: |
|
442 | if 'traceback' in reply_content: | |
439 | self.log.info("Exception in execute request:\n%s", '\n'.join(reply_content['traceback'])) |
|
443 | self.log.info("Exception in execute request:\n%s", '\n'.join(reply_content['traceback'])) | |
440 |
|
444 | |||
441 |
|
445 | |||
442 | # At this point, we can tell whether the main code execution succeeded |
|
446 | # At this point, we can tell whether the main code execution succeeded | |
443 | # or not. If it did, we proceed to evaluate user_expressions |
|
447 | # or not. If it did, we proceed to evaluate user_expressions | |
444 | if reply_content['status'] == 'ok': |
|
448 | if reply_content['status'] == 'ok': | |
445 | reply_content[u'user_expressions'] = \ |
|
449 | reply_content[u'user_expressions'] = \ | |
446 | shell.user_expressions(content.get(u'user_expressions', {})) |
|
450 | shell.user_expressions(content.get(u'user_expressions', {})) | |
447 | else: |
|
451 | else: | |
448 | # If there was an error, don't even try to compute expressions |
|
452 | # If there was an error, don't even try to compute expressions | |
449 | reply_content[u'user_expressions'] = {} |
|
453 | reply_content[u'user_expressions'] = {} | |
450 |
|
454 | |||
451 | # Payloads should be retrieved regardless of outcome, so we can both |
|
455 | # Payloads should be retrieved regardless of outcome, so we can both | |
452 | # recover partial output (that could have been generated early in a |
|
456 | # recover partial output (that could have been generated early in a | |
453 | # block, before an error) and clear the payload system always. |
|
457 | # block, before an error) and clear the payload system always. | |
454 | reply_content[u'payload'] = shell.payload_manager.read_payload() |
|
458 | reply_content[u'payload'] = shell.payload_manager.read_payload() | |
455 | # Be agressive about clearing the payload because we don't want |
|
459 | # Be agressive about clearing the payload because we don't want | |
456 | # it to sit in memory until the next execute_request comes in. |
|
460 | # it to sit in memory until the next execute_request comes in. | |
457 | shell.payload_manager.clear_payload() |
|
461 | shell.payload_manager.clear_payload() | |
458 |
|
462 | |||
459 | # Flush output before sending the reply. |
|
463 | # Flush output before sending the reply. | |
460 | sys.stdout.flush() |
|
464 | sys.stdout.flush() | |
461 | sys.stderr.flush() |
|
465 | sys.stderr.flush() | |
462 | # FIXME: on rare occasions, the flush doesn't seem to make it to the |
|
466 | # FIXME: on rare occasions, the flush doesn't seem to make it to the | |
463 | # clients... This seems to mitigate the problem, but we definitely need |
|
467 | # clients... This seems to mitigate the problem, but we definitely need | |
464 | # to better understand what's going on. |
|
468 | # to better understand what's going on. | |
465 | if self._execute_sleep: |
|
469 | if self._execute_sleep: | |
466 | time.sleep(self._execute_sleep) |
|
470 | time.sleep(self._execute_sleep) | |
467 |
|
471 | |||
468 | # Send the reply. |
|
472 | # Send the reply. | |
469 | reply_content = json_clean(reply_content) |
|
473 | reply_content = json_clean(reply_content) | |
470 |
|
474 | |||
471 | md['status'] = reply_content['status'] |
|
475 | md['status'] = reply_content['status'] | |
472 | if reply_content['status'] == 'error' and \ |
|
476 | if reply_content['status'] == 'error' and \ | |
473 | reply_content['ename'] == 'UnmetDependency': |
|
477 | reply_content['ename'] == 'UnmetDependency': | |
474 | md['dependencies_met'] = False |
|
478 | md['dependencies_met'] = False | |
475 |
|
479 | |||
476 | reply_msg = self.session.send(stream, u'execute_reply', |
|
480 | reply_msg = self.session.send(stream, u'execute_reply', | |
477 | reply_content, parent, metadata=md, |
|
481 | reply_content, parent, metadata=md, | |
478 | ident=ident) |
|
482 | ident=ident) | |
479 |
|
483 | |||
480 | self.log.debug("%s", reply_msg) |
|
484 | self.log.debug("%s", reply_msg) | |
481 |
|
485 | |||
482 | if not silent and reply_msg['content']['status'] == u'error': |
|
486 | if not silent and reply_msg['content']['status'] == u'error': | |
483 | self._abort_queues() |
|
487 | self._abort_queues() | |
484 |
|
488 | |||
485 | self._publish_status(u'idle', parent) |
|
489 | self._publish_status(u'idle', parent) | |
486 |
|
490 | |||
487 | def complete_request(self, stream, ident, parent): |
|
491 | def complete_request(self, stream, ident, parent): | |
488 | txt, matches = self._complete(parent) |
|
492 | txt, matches = self._complete(parent) | |
489 | matches = {'matches' : matches, |
|
493 | matches = {'matches' : matches, | |
490 | 'matched_text' : txt, |
|
494 | 'matched_text' : txt, | |
491 | 'status' : 'ok'} |
|
495 | 'status' : 'ok'} | |
492 | matches = json_clean(matches) |
|
496 | matches = json_clean(matches) | |
493 | completion_msg = self.session.send(stream, 'complete_reply', |
|
497 | completion_msg = self.session.send(stream, 'complete_reply', | |
494 | matches, parent, ident) |
|
498 | matches, parent, ident) | |
495 | self.log.debug("%s", completion_msg) |
|
499 | self.log.debug("%s", completion_msg) | |
496 |
|
500 | |||
497 | def object_info_request(self, stream, ident, parent): |
|
501 | def object_info_request(self, stream, ident, parent): | |
498 | content = parent['content'] |
|
502 | content = parent['content'] | |
499 | object_info = self.shell.object_inspect(content['oname'], |
|
503 | object_info = self.shell.object_inspect(content['oname'], | |
500 | detail_level = content.get('detail_level', 0) |
|
504 | detail_level = content.get('detail_level', 0) | |
501 | ) |
|
505 | ) | |
502 | # Before we send this object over, we scrub it for JSON usage |
|
506 | # Before we send this object over, we scrub it for JSON usage | |
503 | oinfo = json_clean(object_info) |
|
507 | oinfo = json_clean(object_info) | |
504 | msg = self.session.send(stream, 'object_info_reply', |
|
508 | msg = self.session.send(stream, 'object_info_reply', | |
505 | oinfo, parent, ident) |
|
509 | oinfo, parent, ident) | |
506 | self.log.debug("%s", msg) |
|
510 | self.log.debug("%s", msg) | |
507 |
|
511 | |||
508 | def history_request(self, stream, ident, parent): |
|
512 | def history_request(self, stream, ident, parent): | |
509 | # We need to pull these out, as passing **kwargs doesn't work with |
|
513 | # We need to pull these out, as passing **kwargs doesn't work with | |
510 | # unicode keys before Python 2.6.5. |
|
514 | # unicode keys before Python 2.6.5. | |
511 | hist_access_type = parent['content']['hist_access_type'] |
|
515 | hist_access_type = parent['content']['hist_access_type'] | |
512 | raw = parent['content']['raw'] |
|
516 | raw = parent['content']['raw'] | |
513 | output = parent['content']['output'] |
|
517 | output = parent['content']['output'] | |
514 | if hist_access_type == 'tail': |
|
518 | if hist_access_type == 'tail': | |
515 | n = parent['content']['n'] |
|
519 | n = parent['content']['n'] | |
516 | hist = self.shell.history_manager.get_tail(n, raw=raw, output=output, |
|
520 | hist = self.shell.history_manager.get_tail(n, raw=raw, output=output, | |
517 | include_latest=True) |
|
521 | include_latest=True) | |
518 |
|
522 | |||
519 | elif hist_access_type == 'range': |
|
523 | elif hist_access_type == 'range': | |
520 | session = parent['content']['session'] |
|
524 | session = parent['content']['session'] | |
521 | start = parent['content']['start'] |
|
525 | start = parent['content']['start'] | |
522 | stop = parent['content']['stop'] |
|
526 | stop = parent['content']['stop'] | |
523 | hist = self.shell.history_manager.get_range(session, start, stop, |
|
527 | hist = self.shell.history_manager.get_range(session, start, stop, | |
524 | raw=raw, output=output) |
|
528 | raw=raw, output=output) | |
525 |
|
529 | |||
526 | elif hist_access_type == 'search': |
|
530 | elif hist_access_type == 'search': | |
527 | n = parent['content'].get('n') |
|
531 | n = parent['content'].get('n') | |
528 | unique = parent['content'].get('unique', False) |
|
532 | unique = parent['content'].get('unique', False) | |
529 | pattern = parent['content']['pattern'] |
|
533 | pattern = parent['content']['pattern'] | |
530 | hist = self.shell.history_manager.search( |
|
534 | hist = self.shell.history_manager.search( | |
531 | pattern, raw=raw, output=output, n=n, unique=unique) |
|
535 | pattern, raw=raw, output=output, n=n, unique=unique) | |
532 |
|
536 | |||
533 | else: |
|
537 | else: | |
534 | hist = [] |
|
538 | hist = [] | |
535 | hist = list(hist) |
|
539 | hist = list(hist) | |
536 | content = {'history' : hist} |
|
540 | content = {'history' : hist} | |
537 | content = json_clean(content) |
|
541 | content = json_clean(content) | |
538 | msg = self.session.send(stream, 'history_reply', |
|
542 | msg = self.session.send(stream, 'history_reply', | |
539 | content, parent, ident) |
|
543 | content, parent, ident) | |
540 | self.log.debug("Sending history reply with %i entries", len(hist)) |
|
544 | self.log.debug("Sending history reply with %i entries", len(hist)) | |
541 |
|
545 | |||
542 | def connect_request(self, stream, ident, parent): |
|
546 | def connect_request(self, stream, ident, parent): | |
543 | if self._recorded_ports is not None: |
|
547 | if self._recorded_ports is not None: | |
544 | content = self._recorded_ports.copy() |
|
548 | content = self._recorded_ports.copy() | |
545 | else: |
|
549 | else: | |
546 | content = {} |
|
550 | content = {} | |
547 | msg = self.session.send(stream, 'connect_reply', |
|
551 | msg = self.session.send(stream, 'connect_reply', | |
548 | content, parent, ident) |
|
552 | content, parent, ident) | |
549 | self.log.debug("%s", msg) |
|
553 | self.log.debug("%s", msg) | |
550 |
|
554 | |||
551 | def kernel_info_request(self, stream, ident, parent): |
|
555 | def kernel_info_request(self, stream, ident, parent): | |
552 | vinfo = { |
|
556 | vinfo = { | |
553 | 'protocol_version': protocol_version, |
|
557 | 'protocol_version': protocol_version, | |
554 | 'ipython_version': ipython_version, |
|
558 | 'ipython_version': ipython_version, | |
555 | 'language_version': language_version, |
|
559 | 'language_version': language_version, | |
556 | 'language': 'python', |
|
560 | 'language': 'python', | |
557 | } |
|
561 | } | |
558 | msg = self.session.send(stream, 'kernel_info_reply', |
|
562 | msg = self.session.send(stream, 'kernel_info_reply', | |
559 | vinfo, parent, ident) |
|
563 | vinfo, parent, ident) | |
560 | self.log.debug("%s", msg) |
|
564 | self.log.debug("%s", msg) | |
561 |
|
565 | |||
562 | def shutdown_request(self, stream, ident, parent): |
|
566 | def shutdown_request(self, stream, ident, parent): | |
563 | self.shell.exit_now = True |
|
567 | self.shell.exit_now = True | |
564 | content = dict(status='ok') |
|
568 | content = dict(status='ok') | |
565 | content.update(parent['content']) |
|
569 | content.update(parent['content']) | |
566 | self.session.send(stream, u'shutdown_reply', content, parent, ident=ident) |
|
570 | self.session.send(stream, u'shutdown_reply', content, parent, ident=ident) | |
567 | # same content, but different msg_id for broadcasting on IOPub |
|
571 | # same content, but different msg_id for broadcasting on IOPub | |
568 | self._shutdown_message = self.session.msg(u'shutdown_reply', |
|
572 | self._shutdown_message = self.session.msg(u'shutdown_reply', | |
569 | content, parent |
|
573 | content, parent | |
570 | ) |
|
574 | ) | |
571 |
|
575 | |||
572 | self._at_shutdown() |
|
576 | self._at_shutdown() | |
573 | # call sys.exit after a short delay |
|
577 | # call sys.exit after a short delay | |
574 | loop = ioloop.IOLoop.instance() |
|
578 | loop = ioloop.IOLoop.instance() | |
575 | loop.add_timeout(time.time()+0.1, loop.stop) |
|
579 | loop.add_timeout(time.time()+0.1, loop.stop) | |
576 |
|
580 | |||
577 | #--------------------------------------------------------------------------- |
|
581 | #--------------------------------------------------------------------------- | |
578 | # Engine methods |
|
582 | # Engine methods | |
579 | #--------------------------------------------------------------------------- |
|
583 | #--------------------------------------------------------------------------- | |
580 |
|
584 | |||
581 | def apply_request(self, stream, ident, parent): |
|
585 | def apply_request(self, stream, ident, parent): | |
582 | try: |
|
586 | try: | |
583 | content = parent[u'content'] |
|
587 | content = parent[u'content'] | |
584 | bufs = parent[u'buffers'] |
|
588 | bufs = parent[u'buffers'] | |
585 | msg_id = parent['header']['msg_id'] |
|
589 | msg_id = parent['header']['msg_id'] | |
586 | except: |
|
590 | except: | |
587 | self.log.error("Got bad msg: %s", parent, exc_info=True) |
|
591 | self.log.error("Got bad msg: %s", parent, exc_info=True) | |
588 | return |
|
592 | return | |
589 |
|
593 | |||
590 | self._publish_status(u'busy', parent) |
|
594 | self._publish_status(u'busy', parent) | |
591 |
|
595 | |||
592 | # Set the parent message of the display hook and out streams. |
|
596 | # Set the parent message of the display hook and out streams. | |
593 | shell = self.shell |
|
597 | shell = self.shell | |
594 | shell.set_parent(parent) |
|
598 | shell.set_parent(parent) | |
595 |
|
599 | |||
596 | # execute_input_msg = self.session.msg(u'execute_input',{u'code':code}, parent=parent) |
|
600 | # execute_input_msg = self.session.msg(u'execute_input',{u'code':code}, parent=parent) | |
597 | # self.iopub_socket.send(execute_input_msg) |
|
601 | # self.iopub_socket.send(execute_input_msg) | |
598 | # self.session.send(self.iopub_socket, u'execute_input', {u'code':code},parent=parent) |
|
602 | # self.session.send(self.iopub_socket, u'execute_input', {u'code':code},parent=parent) | |
599 | md = self._make_metadata(parent['metadata']) |
|
603 | md = self._make_metadata(parent['metadata']) | |
600 | try: |
|
604 | try: | |
601 | working = shell.user_ns |
|
605 | working = shell.user_ns | |
602 |
|
606 | |||
603 | prefix = "_"+str(msg_id).replace("-","")+"_" |
|
607 | prefix = "_"+str(msg_id).replace("-","")+"_" | |
604 |
|
608 | |||
605 | f,args,kwargs = unpack_apply_message(bufs, working, copy=False) |
|
609 | f,args,kwargs = unpack_apply_message(bufs, working, copy=False) | |
606 |
|
610 | |||
607 | fname = getattr(f, '__name__', 'f') |
|
611 | fname = getattr(f, '__name__', 'f') | |
608 |
|
612 | |||
609 | fname = prefix+"f" |
|
613 | fname = prefix+"f" | |
610 | argname = prefix+"args" |
|
614 | argname = prefix+"args" | |
611 | kwargname = prefix+"kwargs" |
|
615 | kwargname = prefix+"kwargs" | |
612 | resultname = prefix+"result" |
|
616 | resultname = prefix+"result" | |
613 |
|
617 | |||
614 | ns = { fname : f, argname : args, kwargname : kwargs , resultname : None } |
|
618 | ns = { fname : f, argname : args, kwargname : kwargs , resultname : None } | |
615 | # print ns |
|
619 | # print ns | |
616 | working.update(ns) |
|
620 | working.update(ns) | |
617 | code = "%s = %s(*%s,**%s)" % (resultname, fname, argname, kwargname) |
|
621 | code = "%s = %s(*%s,**%s)" % (resultname, fname, argname, kwargname) | |
618 | try: |
|
622 | try: | |
619 | exec(code, shell.user_global_ns, shell.user_ns) |
|
623 | exec(code, shell.user_global_ns, shell.user_ns) | |
620 | result = working.get(resultname) |
|
624 | result = working.get(resultname) | |
621 | finally: |
|
625 | finally: | |
622 | for key in ns: |
|
626 | for key in ns: | |
623 | working.pop(key) |
|
627 | working.pop(key) | |
624 |
|
628 | |||
625 | result_buf = serialize_object(result, |
|
629 | result_buf = serialize_object(result, | |
626 | buffer_threshold=self.session.buffer_threshold, |
|
630 | buffer_threshold=self.session.buffer_threshold, | |
627 | item_threshold=self.session.item_threshold, |
|
631 | item_threshold=self.session.item_threshold, | |
628 | ) |
|
632 | ) | |
629 |
|
633 | |||
630 | except: |
|
634 | except: | |
631 | # invoke IPython traceback formatting |
|
635 | # invoke IPython traceback formatting | |
632 | shell.showtraceback() |
|
636 | shell.showtraceback() | |
633 | # FIXME - fish exception info out of shell, possibly left there by |
|
637 | # FIXME - fish exception info out of shell, possibly left there by | |
634 | # run_code. We'll need to clean up this logic later. |
|
638 | # run_code. We'll need to clean up this logic later. | |
635 | reply_content = {} |
|
639 | reply_content = {} | |
636 | if shell._reply_content is not None: |
|
640 | if shell._reply_content is not None: | |
637 | reply_content.update(shell._reply_content) |
|
641 | reply_content.update(shell._reply_content) | |
638 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='apply') |
|
642 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method='apply') | |
639 | reply_content['engine_info'] = e_info |
|
643 | reply_content['engine_info'] = e_info | |
640 | # reset after use |
|
644 | # reset after use | |
641 | shell._reply_content = None |
|
645 | shell._reply_content = None | |
642 |
|
646 | |||
643 | self.session.send(self.iopub_socket, u'error', reply_content, parent=parent, |
|
647 | self.session.send(self.iopub_socket, u'error', reply_content, parent=parent, | |
644 | ident=self._topic('error')) |
|
648 | ident=self._topic('error')) | |
645 | self.log.info("Exception in apply request:\n%s", '\n'.join(reply_content['traceback'])) |
|
649 | self.log.info("Exception in apply request:\n%s", '\n'.join(reply_content['traceback'])) | |
646 | result_buf = [] |
|
650 | result_buf = [] | |
647 |
|
651 | |||
648 | if reply_content['ename'] == 'UnmetDependency': |
|
652 | if reply_content['ename'] == 'UnmetDependency': | |
649 | md['dependencies_met'] = False |
|
653 | md['dependencies_met'] = False | |
650 | else: |
|
654 | else: | |
651 | reply_content = {'status' : 'ok'} |
|
655 | reply_content = {'status' : 'ok'} | |
652 |
|
656 | |||
653 | # put 'ok'/'error' status in header, for scheduler introspection: |
|
657 | # put 'ok'/'error' status in header, for scheduler introspection: | |
654 | md['status'] = reply_content['status'] |
|
658 | md['status'] = reply_content['status'] | |
655 |
|
659 | |||
656 | # flush i/o |
|
660 | # flush i/o | |
657 | sys.stdout.flush() |
|
661 | sys.stdout.flush() | |
658 | sys.stderr.flush() |
|
662 | sys.stderr.flush() | |
659 |
|
663 | |||
660 | reply_msg = self.session.send(stream, u'apply_reply', reply_content, |
|
664 | reply_msg = self.session.send(stream, u'apply_reply', reply_content, | |
661 | parent=parent, ident=ident,buffers=result_buf, metadata=md) |
|
665 | parent=parent, ident=ident,buffers=result_buf, metadata=md) | |
662 |
|
666 | |||
663 | self._publish_status(u'idle', parent) |
|
667 | self._publish_status(u'idle', parent) | |
664 |
|
668 | |||
665 | #--------------------------------------------------------------------------- |
|
669 | #--------------------------------------------------------------------------- | |
666 | # Control messages |
|
670 | # Control messages | |
667 | #--------------------------------------------------------------------------- |
|
671 | #--------------------------------------------------------------------------- | |
668 |
|
672 | |||
669 | def abort_request(self, stream, ident, parent): |
|
673 | def abort_request(self, stream, ident, parent): | |
670 | """abort a specifig msg by id""" |
|
674 | """abort a specifig msg by id""" | |
671 | msg_ids = parent['content'].get('msg_ids', None) |
|
675 | msg_ids = parent['content'].get('msg_ids', None) | |
672 | if isinstance(msg_ids, string_types): |
|
676 | if isinstance(msg_ids, string_types): | |
673 | msg_ids = [msg_ids] |
|
677 | msg_ids = [msg_ids] | |
674 | if not msg_ids: |
|
678 | if not msg_ids: | |
675 | self.abort_queues() |
|
679 | self.abort_queues() | |
676 | for mid in msg_ids: |
|
680 | for mid in msg_ids: | |
677 | self.aborted.add(str(mid)) |
|
681 | self.aborted.add(str(mid)) | |
678 |
|
682 | |||
679 | content = dict(status='ok') |
|
683 | content = dict(status='ok') | |
680 | reply_msg = self.session.send(stream, 'abort_reply', content=content, |
|
684 | reply_msg = self.session.send(stream, 'abort_reply', content=content, | |
681 | parent=parent, ident=ident) |
|
685 | parent=parent, ident=ident) | |
682 | self.log.debug("%s", reply_msg) |
|
686 | self.log.debug("%s", reply_msg) | |
683 |
|
687 | |||
684 | def clear_request(self, stream, idents, parent): |
|
688 | def clear_request(self, stream, idents, parent): | |
685 | """Clear our namespace.""" |
|
689 | """Clear our namespace.""" | |
686 | self.shell.reset(False) |
|
690 | self.shell.reset(False) | |
687 | msg = self.session.send(stream, 'clear_reply', ident=idents, parent=parent, |
|
691 | msg = self.session.send(stream, 'clear_reply', ident=idents, parent=parent, | |
688 | content = dict(status='ok')) |
|
692 | content = dict(status='ok')) | |
689 |
|
693 | |||
690 |
|
694 | |||
691 | #--------------------------------------------------------------------------- |
|
695 | #--------------------------------------------------------------------------- | |
692 | # Protected interface |
|
696 | # Protected interface | |
693 | #--------------------------------------------------------------------------- |
|
697 | #--------------------------------------------------------------------------- | |
694 |
|
698 | |||
695 | def _wrap_exception(self, method=None): |
|
699 | def _wrap_exception(self, method=None): | |
696 | # import here, because _wrap_exception is only used in parallel, |
|
700 | # import here, because _wrap_exception is only used in parallel, | |
697 | # and parallel has higher min pyzmq version |
|
701 | # and parallel has higher min pyzmq version | |
698 | from IPython.parallel.error import wrap_exception |
|
702 | from IPython.parallel.error import wrap_exception | |
699 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method=method) |
|
703 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method=method) | |
700 | content = wrap_exception(e_info) |
|
704 | content = wrap_exception(e_info) | |
701 | return content |
|
705 | return content | |
702 |
|
706 | |||
703 | def _topic(self, topic): |
|
707 | def _topic(self, topic): | |
704 | """prefixed topic for IOPub messages""" |
|
708 | """prefixed topic for IOPub messages""" | |
705 | if self.int_id >= 0: |
|
709 | if self.int_id >= 0: | |
706 | base = "engine.%i" % self.int_id |
|
710 | base = "engine.%i" % self.int_id | |
707 | else: |
|
711 | else: | |
708 | base = "kernel.%s" % self.ident |
|
712 | base = "kernel.%s" % self.ident | |
709 |
|
713 | |||
710 | return py3compat.cast_bytes("%s.%s" % (base, topic)) |
|
714 | return py3compat.cast_bytes("%s.%s" % (base, topic)) | |
711 |
|
715 | |||
712 | def _abort_queues(self): |
|
716 | def _abort_queues(self): | |
713 | for stream in self.shell_streams: |
|
717 | for stream in self.shell_streams: | |
714 | if stream: |
|
718 | if stream: | |
715 | self._abort_queue(stream) |
|
719 | self._abort_queue(stream) | |
716 |
|
720 | |||
717 | def _abort_queue(self, stream): |
|
721 | def _abort_queue(self, stream): | |
718 | poller = zmq.Poller() |
|
722 | poller = zmq.Poller() | |
719 | poller.register(stream.socket, zmq.POLLIN) |
|
723 | poller.register(stream.socket, zmq.POLLIN) | |
720 | while True: |
|
724 | while True: | |
721 | idents,msg = self.session.recv(stream, zmq.NOBLOCK, content=True) |
|
725 | idents,msg = self.session.recv(stream, zmq.NOBLOCK, content=True) | |
722 | if msg is None: |
|
726 | if msg is None: | |
723 | return |
|
727 | return | |
724 |
|
728 | |||
725 | self.log.info("Aborting:") |
|
729 | self.log.info("Aborting:") | |
726 | self.log.info("%s", msg) |
|
730 | self.log.info("%s", msg) | |
727 | msg_type = msg['header']['msg_type'] |
|
731 | msg_type = msg['header']['msg_type'] | |
728 | reply_type = msg_type.split('_')[0] + '_reply' |
|
732 | reply_type = msg_type.split('_')[0] + '_reply' | |
729 |
|
733 | |||
730 | status = {'status' : 'aborted'} |
|
734 | status = {'status' : 'aborted'} | |
731 | md = {'engine' : self.ident} |
|
735 | md = {'engine' : self.ident} | |
732 | md.update(status) |
|
736 | md.update(status) | |
733 | reply_msg = self.session.send(stream, reply_type, metadata=md, |
|
737 | reply_msg = self.session.send(stream, reply_type, metadata=md, | |
734 | content=status, parent=msg, ident=idents) |
|
738 | content=status, parent=msg, ident=idents) | |
735 | self.log.debug("%s", reply_msg) |
|
739 | self.log.debug("%s", reply_msg) | |
736 | # We need to wait a bit for requests to come in. This can probably |
|
740 | # We need to wait a bit for requests to come in. This can probably | |
737 | # be set shorter for true asynchronous clients. |
|
741 | # be set shorter for true asynchronous clients. | |
738 | poller.poll(50) |
|
742 | poller.poll(50) | |
739 |
|
743 | |||
740 |
|
744 | |||
741 | def _no_raw_input(self): |
|
745 | def _no_raw_input(self): | |
742 | """Raise StdinNotImplentedError if active frontend doesn't support |
|
746 | """Raise StdinNotImplentedError if active frontend doesn't support | |
743 | stdin.""" |
|
747 | stdin.""" | |
744 | raise StdinNotImplementedError("raw_input was called, but this " |
|
748 | raise StdinNotImplementedError("raw_input was called, but this " | |
745 | "frontend does not support stdin.") |
|
749 | "frontend does not support stdin.") | |
746 |
|
750 | |||
747 | def _raw_input(self, prompt, ident, parent, password=False): |
|
751 | def getpass(self, prompt=''): | |
|
752 | """Forward getpass to frontends | |||
|
753 | ||||
|
754 | Raises | |||
|
755 | ------ | |||
|
756 | StdinNotImplentedError if active frontend doesn't support stdin. | |||
|
757 | """ | |||
|
758 | if not self._allow_stdin: | |||
|
759 | raise StdinNotImplementedError( | |||
|
760 | "getpass was called, but this frontend does not support input requests." | |||
|
761 | ) | |||
|
762 | return self._input_request(prompt, | |||
|
763 | self._parent_ident, | |||
|
764 | self._parent_header, | |||
|
765 | password=True, | |||
|
766 | ) | |||
|
767 | ||||
|
768 | def raw_input(self, prompt=''): | |||
|
769 | """Forward raw_input to frontends | |||
|
770 | ||||
|
771 | Raises | |||
|
772 | ------ | |||
|
773 | StdinNotImplentedError if active frontend doesn't support stdin. | |||
|
774 | """ | |||
|
775 | if not self._allow_stdin: | |||
|
776 | raise StdinNotImplementedError( | |||
|
777 | "raw_input was called, but this frontend does not support input requests." | |||
|
778 | ) | |||
|
779 | return self._input_request(prompt, | |||
|
780 | self._parent_ident, | |||
|
781 | self._parent_header, | |||
|
782 | password=False, | |||
|
783 | ) | |||
|
784 | ||||
|
785 | def _input_request(self, prompt, ident, parent, password=False): | |||
748 | # Flush output before making the request. |
|
786 | # Flush output before making the request. | |
749 | sys.stderr.flush() |
|
787 | sys.stderr.flush() | |
750 | sys.stdout.flush() |
|
788 | sys.stdout.flush() | |
751 | # flush the stdin socket, to purge stale replies |
|
789 | # flush the stdin socket, to purge stale replies | |
752 | while True: |
|
790 | while True: | |
753 | try: |
|
791 | try: | |
754 | self.stdin_socket.recv_multipart(zmq.NOBLOCK) |
|
792 | self.stdin_socket.recv_multipart(zmq.NOBLOCK) | |
755 | except zmq.ZMQError as e: |
|
793 | except zmq.ZMQError as e: | |
756 | if e.errno == zmq.EAGAIN: |
|
794 | if e.errno == zmq.EAGAIN: | |
757 | break |
|
795 | break | |
758 | else: |
|
796 | else: | |
759 | raise |
|
797 | raise | |
760 |
|
798 | |||
761 | # Send the input request. |
|
799 | # Send the input request. | |
762 | content = json_clean(dict(prompt=prompt, password=password)) |
|
800 | content = json_clean(dict(prompt=prompt, password=password)) | |
763 | self.session.send(self.stdin_socket, u'input_request', content, parent, |
|
801 | self.session.send(self.stdin_socket, u'input_request', content, parent, | |
764 | ident=ident) |
|
802 | ident=ident) | |
765 |
|
803 | |||
766 | # Await a response. |
|
804 | # Await a response. | |
767 | while True: |
|
805 | while True: | |
768 | try: |
|
806 | try: | |
769 | ident, reply = self.session.recv(self.stdin_socket, 0) |
|
807 | ident, reply = self.session.recv(self.stdin_socket, 0) | |
770 | except Exception: |
|
808 | except Exception: | |
771 | self.log.warn("Invalid Message:", exc_info=True) |
|
809 | self.log.warn("Invalid Message:", exc_info=True) | |
772 | except KeyboardInterrupt: |
|
810 | except KeyboardInterrupt: | |
773 | # re-raise KeyboardInterrupt, to truncate traceback |
|
811 | # re-raise KeyboardInterrupt, to truncate traceback | |
774 | raise KeyboardInterrupt |
|
812 | raise KeyboardInterrupt | |
775 | else: |
|
813 | else: | |
776 | break |
|
814 | break | |
777 | try: |
|
815 | try: | |
778 | value = py3compat.unicode_to_str(reply['content']['value']) |
|
816 | value = py3compat.unicode_to_str(reply['content']['value']) | |
779 | except: |
|
817 | except: | |
780 |
self.log.error(" |
|
818 | self.log.error("Bad input_reply: %s", parent) | |
781 | self.log.error("%s", parent) |
|
|||
782 | value = '' |
|
819 | value = '' | |
783 | if value == '\x04': |
|
820 | if value == '\x04': | |
784 | # EOF |
|
821 | # EOF | |
785 | raise EOFError |
|
822 | raise EOFError | |
786 | return value |
|
823 | return value | |
787 |
|
824 | |||
788 | def _complete(self, msg): |
|
825 | def _complete(self, msg): | |
789 | c = msg['content'] |
|
826 | c = msg['content'] | |
790 | try: |
|
827 | try: | |
791 | cpos = int(c['cursor_pos']) |
|
828 | cpos = int(c['cursor_pos']) | |
792 | except: |
|
829 | except: | |
793 | # If we don't get something that we can convert to an integer, at |
|
830 | # If we don't get something that we can convert to an integer, at | |
794 | # least attempt the completion guessing the cursor is at the end of |
|
831 | # least attempt the completion guessing the cursor is at the end of | |
795 | # the text, if there's any, and otherwise of the line |
|
832 | # the text, if there's any, and otherwise of the line | |
796 | cpos = len(c['text']) |
|
833 | cpos = len(c['text']) | |
797 | if cpos==0: |
|
834 | if cpos==0: | |
798 | cpos = len(c['line']) |
|
835 | cpos = len(c['line']) | |
799 | return self.shell.complete(c['text'], c['line'], cpos) |
|
836 | return self.shell.complete(c['text'], c['line'], cpos) | |
800 |
|
837 | |||
801 | def _at_shutdown(self): |
|
838 | def _at_shutdown(self): | |
802 | """Actions taken at shutdown by the kernel, called by python's atexit. |
|
839 | """Actions taken at shutdown by the kernel, called by python's atexit. | |
803 | """ |
|
840 | """ | |
804 | # io.rprint("Kernel at_shutdown") # dbg |
|
841 | # io.rprint("Kernel at_shutdown") # dbg | |
805 | if self._shutdown_message is not None: |
|
842 | if self._shutdown_message is not None: | |
806 | self.session.send(self.iopub_socket, self._shutdown_message, ident=self._topic('shutdown')) |
|
843 | self.session.send(self.iopub_socket, self._shutdown_message, ident=self._topic('shutdown')) | |
807 | self.log.debug("%s", self._shutdown_message) |
|
844 | self.log.debug("%s", self._shutdown_message) | |
808 | [ s.flush(zmq.POLLOUT) for s in self.shell_streams ] |
|
845 | [ s.flush(zmq.POLLOUT) for s in self.shell_streams ] | |
809 |
|
846 |
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