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@@ -1,350 +1,353 b'' | |||||
1 | # Standard library imports |
|
1 | # Standard library imports | |
2 | import signal |
|
2 | import signal | |
3 |
|
3 | |||
4 | # System library imports |
|
4 | # System library imports | |
5 | from pygments.lexers import PythonLexer |
|
5 | from pygments.lexers import PythonLexer | |
6 | from PyQt4 import QtCore, QtGui |
|
6 | from PyQt4 import QtCore, QtGui | |
7 | import zmq |
|
7 | import zmq | |
8 |
|
8 | |||
9 | # Local imports |
|
9 | # Local imports | |
10 | from IPython.core.inputsplitter import InputSplitter |
|
10 | from IPython.core.inputsplitter import InputSplitter | |
11 | from call_tip_widget import CallTipWidget |
|
11 | from call_tip_widget import CallTipWidget | |
12 | from completion_lexer import CompletionLexer |
|
12 | from completion_lexer import CompletionLexer | |
13 | from console_widget import HistoryConsoleWidget |
|
13 | from console_widget import HistoryConsoleWidget | |
14 | from pygments_highlighter import PygmentsHighlighter |
|
14 | from pygments_highlighter import PygmentsHighlighter | |
15 |
|
15 | |||
16 |
|
16 | |||
17 | class FrontendHighlighter(PygmentsHighlighter): |
|
17 | class FrontendHighlighter(PygmentsHighlighter): | |
18 | """ A Python PygmentsHighlighter that can be turned on and off and which |
|
18 | """ A Python PygmentsHighlighter that can be turned on and off and which | |
19 | knows about continuation prompts. |
|
19 | knows about continuation prompts. | |
20 | """ |
|
20 | """ | |
21 |
|
21 | |||
22 | def __init__(self, frontend): |
|
22 | def __init__(self, frontend): | |
23 | PygmentsHighlighter.__init__(self, frontend.document(), PythonLexer()) |
|
23 | PygmentsHighlighter.__init__(self, frontend.document(), PythonLexer()) | |
24 | self._current_offset = 0 |
|
24 | self._current_offset = 0 | |
25 | self._frontend = frontend |
|
25 | self._frontend = frontend | |
26 | self.highlighting_on = False |
|
26 | self.highlighting_on = False | |
27 |
|
27 | |||
28 | def highlightBlock(self, qstring): |
|
28 | def highlightBlock(self, qstring): | |
29 | """ Highlight a block of text. Reimplemented to highlight selectively. |
|
29 | """ Highlight a block of text. Reimplemented to highlight selectively. | |
30 | """ |
|
30 | """ | |
31 | if self.highlighting_on: |
|
31 | if self.highlighting_on: | |
32 | for prompt in (self._frontend._continuation_prompt, |
|
32 | for prompt in (self._frontend._continuation_prompt, | |
33 | self._frontend._prompt): |
|
33 | self._frontend._prompt): | |
34 | if qstring.startsWith(prompt): |
|
34 | if qstring.startsWith(prompt): | |
35 | qstring.remove(0, len(prompt)) |
|
35 | qstring.remove(0, len(prompt)) | |
36 | self._current_offset = len(prompt) |
|
36 | self._current_offset = len(prompt) | |
37 | break |
|
37 | break | |
38 | PygmentsHighlighter.highlightBlock(self, qstring) |
|
38 | PygmentsHighlighter.highlightBlock(self, qstring) | |
39 |
|
39 | |||
40 | def setFormat(self, start, count, format): |
|
40 | def setFormat(self, start, count, format): | |
41 | """ Reimplemented to avoid highlighting continuation prompts. |
|
41 | """ Reimplemented to avoid highlighting continuation prompts. | |
42 | """ |
|
42 | """ | |
43 | start += self._current_offset |
|
43 | start += self._current_offset | |
44 | PygmentsHighlighter.setFormat(self, start, count, format) |
|
44 | PygmentsHighlighter.setFormat(self, start, count, format) | |
45 |
|
45 | |||
46 |
|
46 | |||
47 | class FrontendWidget(HistoryConsoleWidget): |
|
47 | class FrontendWidget(HistoryConsoleWidget): | |
48 | """ A Qt frontend for a generic Python kernel. |
|
48 | """ A Qt frontend for a generic Python kernel. | |
49 | """ |
|
49 | """ | |
50 |
|
50 | |||
51 | # Emitted when an 'execute_reply' is received from the kernel. |
|
51 | # Emitted when an 'execute_reply' is received from the kernel. | |
52 | executed = QtCore.pyqtSignal(object) |
|
52 | executed = QtCore.pyqtSignal(object) | |
53 |
|
53 | |||
54 | #--------------------------------------------------------------------------- |
|
54 | #--------------------------------------------------------------------------- | |
55 | # 'QObject' interface |
|
55 | # 'QObject' interface | |
56 | #--------------------------------------------------------------------------- |
|
56 | #--------------------------------------------------------------------------- | |
57 |
|
57 | |||
58 | def __init__(self, parent=None): |
|
58 | def __init__(self, parent=None): | |
59 | super(FrontendWidget, self).__init__(parent) |
|
59 | super(FrontendWidget, self).__init__(parent) | |
60 |
|
60 | |||
61 | # ConsoleWidget protected variables. |
|
61 | # ConsoleWidget protected variables. | |
62 | self._continuation_prompt = '... ' |
|
62 | self._continuation_prompt = '... ' | |
63 |
|
63 | |||
64 | # FrontendWidget protected variables. |
|
64 | # FrontendWidget protected variables. | |
65 | self._call_tip_widget = CallTipWidget(self) |
|
65 | self._call_tip_widget = CallTipWidget(self) | |
66 | self._completion_lexer = CompletionLexer(PythonLexer()) |
|
66 | self._completion_lexer = CompletionLexer(PythonLexer()) | |
67 | self._hidden = True |
|
67 | self._hidden = True | |
68 | self._highlighter = FrontendHighlighter(self) |
|
68 | self._highlighter = FrontendHighlighter(self) | |
69 | self._input_splitter = InputSplitter(input_mode='replace') |
|
69 | self._input_splitter = InputSplitter(input_mode='replace') | |
70 | self._kernel_manager = None |
|
70 | self._kernel_manager = None | |
71 |
|
71 | |||
72 | self.document().contentsChange.connect(self._document_contents_change) |
|
72 | self.document().contentsChange.connect(self._document_contents_change) | |
73 |
|
73 | |||
74 | #--------------------------------------------------------------------------- |
|
74 | #--------------------------------------------------------------------------- | |
75 | # 'QWidget' interface |
|
75 | # 'QWidget' interface | |
76 | #--------------------------------------------------------------------------- |
|
76 | #--------------------------------------------------------------------------- | |
77 |
|
77 | |||
78 | def focusOutEvent(self, event): |
|
78 | def focusOutEvent(self, event): | |
79 | """ Reimplemented to hide calltips. |
|
79 | """ Reimplemented to hide calltips. | |
80 | """ |
|
80 | """ | |
81 | self._call_tip_widget.hide() |
|
81 | self._call_tip_widget.hide() | |
82 | super(FrontendWidget, self).focusOutEvent(event) |
|
82 | super(FrontendWidget, self).focusOutEvent(event) | |
83 |
|
83 | |||
84 | def keyPressEvent(self, event): |
|
84 | def keyPressEvent(self, event): | |
85 | """ Reimplemented to allow calltips to process events and to send |
|
85 | """ Reimplemented to allow calltips to process events and to send | |
86 | signals to the kernel. |
|
86 | signals to the kernel. | |
87 | """ |
|
87 | """ | |
88 | if self._executing and event.key() == QtCore.Qt.Key_C and \ |
|
88 | if self._executing and event.key() == QtCore.Qt.Key_C and \ | |
89 | self._control_down(event.modifiers()): |
|
89 | self._control_down(event.modifiers()): | |
90 | self._interrupt_kernel() |
|
90 | self._interrupt_kernel() | |
91 | else: |
|
91 | else: | |
92 | if self._call_tip_widget.isVisible(): |
|
92 | if self._call_tip_widget.isVisible(): | |
93 | self._call_tip_widget.keyPressEvent(event) |
|
93 | self._call_tip_widget.keyPressEvent(event) | |
94 | super(FrontendWidget, self).keyPressEvent(event) |
|
94 | super(FrontendWidget, self).keyPressEvent(event) | |
95 |
|
95 | |||
96 | #--------------------------------------------------------------------------- |
|
96 | #--------------------------------------------------------------------------- | |
97 | # 'ConsoleWidget' abstract interface |
|
97 | # 'ConsoleWidget' abstract interface | |
98 | #--------------------------------------------------------------------------- |
|
98 | #--------------------------------------------------------------------------- | |
99 |
|
99 | |||
100 | def _is_complete(self, source, interactive): |
|
100 | def _is_complete(self, source, interactive): | |
101 | """ Returns whether 'source' can be completely processed and a new |
|
101 | """ Returns whether 'source' can be completely processed and a new | |
102 | prompt created. When triggered by an Enter/Return key press, |
|
102 | prompt created. When triggered by an Enter/Return key press, | |
103 | 'interactive' is True; otherwise, it is False. |
|
103 | 'interactive' is True; otherwise, it is False. | |
104 | """ |
|
104 | """ | |
105 | complete = self._input_splitter.push(source) |
|
105 | complete = self._input_splitter.push(source) | |
106 | if interactive: |
|
106 | if interactive: | |
107 | complete = not self._input_splitter.push_accepts_more() |
|
107 | complete = not self._input_splitter.push_accepts_more() | |
108 | return complete |
|
108 | return complete | |
109 |
|
109 | |||
110 | def _execute(self, source, hidden): |
|
110 | def _execute(self, source, hidden): | |
111 | """ Execute 'source'. If 'hidden', do not show any output. |
|
111 | """ Execute 'source'. If 'hidden', do not show any output. | |
112 | """ |
|
112 | """ | |
113 | self.kernel_manager.xreq_channel.execute(source) |
|
113 | self.kernel_manager.xreq_channel.execute(source) | |
114 | self._hidden = hidden |
|
114 | self._hidden = hidden | |
115 |
|
115 | |||
116 | def _prompt_started_hook(self): |
|
116 | def _prompt_started_hook(self): | |
117 | """ Called immediately after a new prompt is displayed. |
|
117 | """ Called immediately after a new prompt is displayed. | |
118 | """ |
|
118 | """ | |
119 | self._highlighter.highlighting_on = True |
|
119 | self._highlighter.highlighting_on = True | |
120 |
|
120 | |||
121 | # Auto-indent if this is a continuation prompt. |
|
121 | # Auto-indent if this is a continuation prompt. | |
122 | if self._get_prompt_cursor().blockNumber() != \ |
|
122 | if self._get_prompt_cursor().blockNumber() != \ | |
123 | self._get_end_cursor().blockNumber(): |
|
123 | self._get_end_cursor().blockNumber(): | |
124 | self.appendPlainText(' ' * self._input_splitter.indent_spaces) |
|
124 | self.appendPlainText(' ' * self._input_splitter.indent_spaces) | |
125 |
|
125 | |||
126 | def _prompt_finished_hook(self): |
|
126 | def _prompt_finished_hook(self): | |
127 | """ Called immediately after a prompt is finished, i.e. when some input |
|
127 | """ Called immediately after a prompt is finished, i.e. when some input | |
128 | will be processed and a new prompt displayed. |
|
128 | will be processed and a new prompt displayed. | |
129 | """ |
|
129 | """ | |
130 | self._highlighter.highlighting_on = False |
|
130 | self._highlighter.highlighting_on = False | |
131 |
|
131 | |||
132 | def _tab_pressed(self): |
|
132 | def _tab_pressed(self): | |
133 | """ Called when the tab key is pressed. Returns whether to continue |
|
133 | """ Called when the tab key is pressed. Returns whether to continue | |
134 | processing the event. |
|
134 | processing the event. | |
135 | """ |
|
135 | """ | |
136 | self._keep_cursor_in_buffer() |
|
136 | self._keep_cursor_in_buffer() | |
137 | cursor = self.textCursor() |
|
137 | cursor = self.textCursor() | |
138 | if not self._complete(): |
|
138 | if not self._complete(): | |
139 | cursor.insertText(' ') |
|
139 | cursor.insertText(' ') | |
140 | return False |
|
140 | return False | |
141 |
|
141 | |||
142 | #--------------------------------------------------------------------------- |
|
142 | #--------------------------------------------------------------------------- | |
143 | # 'ConsoleWidget' protected interface |
|
143 | # 'ConsoleWidget' protected interface | |
144 | #--------------------------------------------------------------------------- |
|
144 | #--------------------------------------------------------------------------- | |
145 |
|
145 | |||
146 | def _show_prompt(self, prompt=None): |
|
146 | def _show_prompt(self, prompt=None): | |
147 | """ Reimplemented to set a default prompt. |
|
147 | """ Reimplemented to set a default prompt. | |
148 | """ |
|
148 | """ | |
149 | if prompt is None: |
|
149 | if prompt is None: | |
150 | prompt = '>>> ' |
|
150 | prompt = '>>> ' | |
151 | super(FrontendWidget, self)._show_prompt(prompt) |
|
151 | super(FrontendWidget, self)._show_prompt(prompt) | |
152 |
|
152 | |||
153 | #--------------------------------------------------------------------------- |
|
153 | #--------------------------------------------------------------------------- | |
154 | # 'FrontendWidget' interface |
|
154 | # 'FrontendWidget' interface | |
155 | #--------------------------------------------------------------------------- |
|
155 | #--------------------------------------------------------------------------- | |
156 |
|
156 | |||
157 | def execute_file(self, path, hidden=False): |
|
157 | def execute_file(self, path, hidden=False): | |
158 | """ Attempts to execute file with 'path'. If 'hidden', no output is |
|
158 | """ Attempts to execute file with 'path'. If 'hidden', no output is | |
159 | shown. |
|
159 | shown. | |
160 | """ |
|
160 | """ | |
161 | self.execute('execfile("%s")' % path, hidden=hidden) |
|
161 | self.execute('execfile("%s")' % path, hidden=hidden) | |
162 |
|
162 | |||
163 | def _get_kernel_manager(self): |
|
163 | def _get_kernel_manager(self): | |
164 | """ Returns the current kernel manager. |
|
164 | """ Returns the current kernel manager. | |
165 | """ |
|
165 | """ | |
166 | return self._kernel_manager |
|
166 | return self._kernel_manager | |
167 |
|
167 | |||
168 | def _set_kernel_manager(self, kernel_manager): |
|
168 | def _set_kernel_manager(self, kernel_manager): | |
169 | """ Disconnect from the current kernel manager (if any) and set a new |
|
169 | """ Disconnect from the current kernel manager (if any) and set a new | |
170 | kernel manager. |
|
170 | kernel manager. | |
171 | """ |
|
171 | """ | |
172 | # Disconnect the old kernel manager, if necessary. |
|
172 | # Disconnect the old kernel manager, if necessary. | |
173 | if self._kernel_manager is not None: |
|
173 | if self._kernel_manager is not None: | |
174 | self._kernel_manager.started_channels.disconnect( |
|
174 | self._kernel_manager.started_channels.disconnect( | |
175 | self._started_channels) |
|
175 | self._started_channels) | |
176 | self._kernel_manager.stopped_channels.disconnect( |
|
176 | self._kernel_manager.stopped_channels.disconnect( | |
177 | self._stopped_channels) |
|
177 | self._stopped_channels) | |
178 |
|
178 | |||
179 | # Disconnect the old kernel manager's channels. |
|
179 | # Disconnect the old kernel manager's channels. | |
180 | sub = self._kernel_manager.sub_channel |
|
180 | sub = self._kernel_manager.sub_channel | |
181 | xreq = self._kernel_manager.xreq_channel |
|
181 | xreq = self._kernel_manager.xreq_channel | |
|
182 | rep = self._kernel_manager.rep_channel | |||
182 | sub.message_received.disconnect(self._handle_sub) |
|
183 | sub.message_received.disconnect(self._handle_sub) | |
183 | xreq.execute_reply.disconnect(self._handle_execute_reply) |
|
184 | xreq.execute_reply.disconnect(self._handle_execute_reply) | |
184 | xreq.complete_reply.disconnect(self._handle_complete_reply) |
|
185 | xreq.complete_reply.disconnect(self._handle_complete_reply) | |
185 | xreq.object_info_reply.disconnect(self._handle_object_info_reply) |
|
186 | xreq.object_info_reply.disconnect(self._handle_object_info_reply) | |
|
187 | rep.readline_requested.disconnect(self._handle_req) | |||
186 |
|
188 | |||
187 | # Handle the case where the old kernel manager is still listening. |
|
189 | # Handle the case where the old kernel manager is still listening. | |
188 | if self._kernel_manager.channels_running: |
|
190 | if self._kernel_manager.channels_running: | |
189 | self._stopped_channels() |
|
191 | self._stopped_channels() | |
190 |
|
192 | |||
191 | # Set the new kernel manager. |
|
193 | # Set the new kernel manager. | |
192 | self._kernel_manager = kernel_manager |
|
194 | self._kernel_manager = kernel_manager | |
193 | if kernel_manager is None: |
|
195 | if kernel_manager is None: | |
194 | return |
|
196 | return | |
195 |
|
197 | |||
196 | # Connect the new kernel manager. |
|
198 | # Connect the new kernel manager. | |
197 | kernel_manager.started_channels.connect(self._started_channels) |
|
199 | kernel_manager.started_channels.connect(self._started_channels) | |
198 | kernel_manager.stopped_channels.connect(self._stopped_channels) |
|
200 | kernel_manager.stopped_channels.connect(self._stopped_channels) | |
199 |
|
201 | |||
200 | # Connect the new kernel manager's channels. |
|
202 | # Connect the new kernel manager's channels. | |
201 | sub = kernel_manager.sub_channel |
|
203 | sub = kernel_manager.sub_channel | |
202 | xreq = kernel_manager.xreq_channel |
|
204 | xreq = kernel_manager.xreq_channel | |
|
205 | rep = kernel_manager.rep_channel | |||
203 | sub.message_received.connect(self._handle_sub) |
|
206 | sub.message_received.connect(self._handle_sub) | |
204 | xreq.execute_reply.connect(self._handle_execute_reply) |
|
207 | xreq.execute_reply.connect(self._handle_execute_reply) | |
205 | xreq.complete_reply.connect(self._handle_complete_reply) |
|
208 | xreq.complete_reply.connect(self._handle_complete_reply) | |
206 | xreq.object_info_reply.connect(self._handle_object_info_reply) |
|
209 | xreq.object_info_reply.connect(self._handle_object_info_reply) | |
|
210 | rep.readline_requested.connect(self._handle_req) | |||
207 |
|
211 | |||
208 | # Handle the case where the kernel manager started channels before |
|
212 | # Handle the case where the kernel manager started channels before | |
209 | # we connected. |
|
213 | # we connected. | |
210 | if kernel_manager.channels_running: |
|
214 | if kernel_manager.channels_running: | |
211 | self._started_channels() |
|
215 | self._started_channels() | |
212 |
|
216 | |||
213 | kernel_manager = property(_get_kernel_manager, _set_kernel_manager) |
|
217 | kernel_manager = property(_get_kernel_manager, _set_kernel_manager) | |
214 |
|
218 | |||
215 | #--------------------------------------------------------------------------- |
|
219 | #--------------------------------------------------------------------------- | |
216 | # 'FrontendWidget' protected interface |
|
220 | # 'FrontendWidget' protected interface | |
217 | #--------------------------------------------------------------------------- |
|
221 | #--------------------------------------------------------------------------- | |
218 |
|
222 | |||
219 | def _call_tip(self): |
|
223 | def _call_tip(self): | |
220 | """ Shows a call tip, if appropriate, at the current cursor location. |
|
224 | """ Shows a call tip, if appropriate, at the current cursor location. | |
221 | """ |
|
225 | """ | |
222 | # Decide if it makes sense to show a call tip |
|
226 | # Decide if it makes sense to show a call tip | |
223 | cursor = self.textCursor() |
|
227 | cursor = self.textCursor() | |
224 | cursor.movePosition(QtGui.QTextCursor.Left) |
|
228 | cursor.movePosition(QtGui.QTextCursor.Left) | |
225 | document = self.document() |
|
229 | document = self.document() | |
226 | if document.characterAt(cursor.position()).toAscii() != '(': |
|
230 | if document.characterAt(cursor.position()).toAscii() != '(': | |
227 | return False |
|
231 | return False | |
228 | context = self._get_context(cursor) |
|
232 | context = self._get_context(cursor) | |
229 | if not context: |
|
233 | if not context: | |
230 | return False |
|
234 | return False | |
231 |
|
235 | |||
232 | # Send the metadata request to the kernel |
|
236 | # Send the metadata request to the kernel | |
233 | name = '.'.join(context) |
|
237 | name = '.'.join(context) | |
234 | self._calltip_id = self.kernel_manager.xreq_channel.object_info(name) |
|
238 | self._calltip_id = self.kernel_manager.xreq_channel.object_info(name) | |
235 | self._calltip_pos = self.textCursor().position() |
|
239 | self._calltip_pos = self.textCursor().position() | |
236 | return True |
|
240 | return True | |
237 |
|
241 | |||
238 | def _complete(self): |
|
242 | def _complete(self): | |
239 | """ Performs completion at the current cursor location. |
|
243 | """ Performs completion at the current cursor location. | |
240 | """ |
|
244 | """ | |
241 | # Decide if it makes sense to do completion |
|
245 | # Decide if it makes sense to do completion | |
242 | context = self._get_context() |
|
246 | context = self._get_context() | |
243 | if not context: |
|
247 | if not context: | |
244 | return False |
|
248 | return False | |
245 |
|
249 | |||
246 | # Send the completion request to the kernel |
|
250 | # Send the completion request to the kernel | |
247 | text = '.'.join(context) |
|
251 | text = '.'.join(context) | |
248 | self._complete_id = self.kernel_manager.xreq_channel.complete( |
|
252 | self._complete_id = self.kernel_manager.xreq_channel.complete( | |
249 | text, self.input_buffer_cursor_line, self.input_buffer) |
|
253 | text, self.input_buffer_cursor_line, self.input_buffer) | |
250 | self._complete_pos = self.textCursor().position() |
|
254 | self._complete_pos = self.textCursor().position() | |
251 | return True |
|
255 | return True | |
252 |
|
256 | |||
253 | def _get_context(self, cursor=None): |
|
257 | def _get_context(self, cursor=None): | |
254 | """ Gets the context at the current cursor location. |
|
258 | """ Gets the context at the current cursor location. | |
255 | """ |
|
259 | """ | |
256 | if cursor is None: |
|
260 | if cursor is None: | |
257 | cursor = self.textCursor() |
|
261 | cursor = self.textCursor() | |
258 | cursor.movePosition(QtGui.QTextCursor.StartOfLine, |
|
262 | cursor.movePosition(QtGui.QTextCursor.StartOfLine, | |
259 | QtGui.QTextCursor.KeepAnchor) |
|
263 | QtGui.QTextCursor.KeepAnchor) | |
260 | text = unicode(cursor.selectedText()) |
|
264 | text = unicode(cursor.selectedText()) | |
261 | return self._completion_lexer.get_context(text) |
|
265 | return self._completion_lexer.get_context(text) | |
262 |
|
266 | |||
263 | def _interrupt_kernel(self): |
|
267 | def _interrupt_kernel(self): | |
264 | """ Attempts to the interrupt the kernel. |
|
268 | """ Attempts to the interrupt the kernel. | |
265 | """ |
|
269 | """ | |
266 | if self.kernel_manager.has_kernel: |
|
270 | if self.kernel_manager.has_kernel: | |
267 | self.kernel_manager.signal_kernel(signal.SIGINT) |
|
271 | self.kernel_manager.signal_kernel(signal.SIGINT) | |
268 | else: |
|
272 | else: | |
269 | self.appendPlainText('Kernel process is either remote or ' |
|
273 | self.appendPlainText('Kernel process is either remote or ' | |
270 | 'unspecified. Cannot interrupt.\n') |
|
274 | 'unspecified. Cannot interrupt.\n') | |
271 |
|
275 | |||
272 | #------ Signal handlers ---------------------------------------------------- |
|
276 | #------ Signal handlers ---------------------------------------------------- | |
273 |
|
277 | |||
274 | def _started_channels(self): |
|
278 | def _started_channels(self): | |
275 | """ Called when the kernel manager has started listening. |
|
279 | """ Called when the kernel manager has started listening. | |
276 | """ |
|
280 | """ | |
277 | self.clear() |
|
281 | self.clear() | |
278 |
|
282 | |||
279 | def _stopped_channels(self): |
|
283 | def _stopped_channels(self): | |
280 | """ Called when the kernel manager has stopped listening. |
|
284 | """ Called when the kernel manager has stopped listening. | |
281 | """ |
|
285 | """ | |
282 | pass |
|
286 | pass | |
283 |
|
287 | |||
284 | def _document_contents_change(self, position, removed, added): |
|
288 | def _document_contents_change(self, position, removed, added): | |
285 | """ Called whenever the document's content changes. Display a calltip |
|
289 | """ Called whenever the document's content changes. Display a calltip | |
286 | if appropriate. |
|
290 | if appropriate. | |
287 | """ |
|
291 | """ | |
288 | # Calculate where the cursor should be *after* the change: |
|
292 | # Calculate where the cursor should be *after* the change: | |
289 | position += added |
|
293 | position += added | |
290 |
|
294 | |||
291 | document = self.document() |
|
295 | document = self.document() | |
292 | if position == self.textCursor().position(): |
|
296 | if position == self.textCursor().position(): | |
293 | self._call_tip() |
|
297 | self._call_tip() | |
294 |
|
298 | |||
295 | def _handle_req(self): |
|
299 | def _handle_req(self, req): | |
296 | def callback(line): |
|
300 | def callback(line): | |
297 | print repr(line) |
|
301 | self.kernel_manager.rep_channel.readline(line) | |
298 | self._show_prompt() |
|
|||
299 | self._readline(callback=callback) |
|
302 | self._readline(callback=callback) | |
300 |
|
303 | |||
301 | def _handle_sub(self, omsg): |
|
304 | def _handle_sub(self, omsg): | |
302 | if self._hidden: |
|
305 | if self._hidden: | |
303 | return |
|
306 | return | |
304 | handler = getattr(self, '_handle_%s' % omsg['msg_type'], None) |
|
307 | handler = getattr(self, '_handle_%s' % omsg['msg_type'], None) | |
305 | if handler is not None: |
|
308 | if handler is not None: | |
306 | handler(omsg) |
|
309 | handler(omsg) | |
307 |
|
310 | |||
308 | def _handle_pyout(self, omsg): |
|
311 | def _handle_pyout(self, omsg): | |
309 | session = omsg['parent_header']['session'] |
|
312 | session = omsg['parent_header']['session'] | |
310 | if session == self.kernel_manager.session.session: |
|
313 | if session == self.kernel_manager.session.session: | |
311 | self.appendPlainText(omsg['content']['data'] + '\n') |
|
314 | self.appendPlainText(omsg['content']['data'] + '\n') | |
312 |
|
315 | |||
313 | def _handle_stream(self, omsg): |
|
316 | def _handle_stream(self, omsg): | |
314 | self.appendPlainText(omsg['content']['data']) |
|
317 | self.appendPlainText(omsg['content']['data']) | |
315 | self.moveCursor(QtGui.QTextCursor.End) |
|
318 | self.moveCursor(QtGui.QTextCursor.End) | |
316 |
|
319 | |||
317 | def _handle_execute_reply(self, rep): |
|
320 | def _handle_execute_reply(self, rep): | |
318 | if self._hidden: |
|
321 | if self._hidden: | |
319 | return |
|
322 | return | |
320 |
|
323 | |||
321 | # Make sure that all output from the SUB channel has been processed |
|
324 | # Make sure that all output from the SUB channel has been processed | |
322 | # before writing a new prompt. |
|
325 | # before writing a new prompt. | |
323 | self.kernel_manager.sub_channel.flush() |
|
326 | self.kernel_manager.sub_channel.flush() | |
324 |
|
327 | |||
325 | content = rep['content'] |
|
328 | content = rep['content'] | |
326 | status = content['status'] |
|
329 | status = content['status'] | |
327 | if status == 'error': |
|
330 | if status == 'error': | |
328 | self.appendPlainText(content['traceback'][-1]) |
|
331 | self.appendPlainText(content['traceback'][-1]) | |
329 | elif status == 'aborted': |
|
332 | elif status == 'aborted': | |
330 | text = "ERROR: ABORTED\n" |
|
333 | text = "ERROR: ABORTED\n" | |
331 | self.appendPlainText(text) |
|
334 | self.appendPlainText(text) | |
332 | self._hidden = True |
|
335 | self._hidden = True | |
333 | self._show_prompt() |
|
336 | self._show_prompt() | |
334 | self.executed.emit(rep) |
|
337 | self.executed.emit(rep) | |
335 |
|
338 | |||
336 | def _handle_complete_reply(self, rep): |
|
339 | def _handle_complete_reply(self, rep): | |
337 | cursor = self.textCursor() |
|
340 | cursor = self.textCursor() | |
338 | if rep['parent_header']['msg_id'] == self._complete_id and \ |
|
341 | if rep['parent_header']['msg_id'] == self._complete_id and \ | |
339 | cursor.position() == self._complete_pos: |
|
342 | cursor.position() == self._complete_pos: | |
340 | text = '.'.join(self._get_context()) |
|
343 | text = '.'.join(self._get_context()) | |
341 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(text)) |
|
344 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(text)) | |
342 | self._complete_with_items(cursor, rep['content']['matches']) |
|
345 | self._complete_with_items(cursor, rep['content']['matches']) | |
343 |
|
346 | |||
344 | def _handle_object_info_reply(self, rep): |
|
347 | def _handle_object_info_reply(self, rep): | |
345 | cursor = self.textCursor() |
|
348 | cursor = self.textCursor() | |
346 | if rep['parent_header']['msg_id'] == self._calltip_id and \ |
|
349 | if rep['parent_header']['msg_id'] == self._calltip_id and \ | |
347 | cursor.position() == self._calltip_pos: |
|
350 | cursor.position() == self._calltip_pos: | |
348 | doc = rep['content']['docstring'] |
|
351 | doc = rep['content']['docstring'] | |
349 | if doc: |
|
352 | if doc: | |
350 | self._call_tip_widget.show_docstring(doc) |
|
353 | self._call_tip_widget.show_docstring(doc) |
@@ -1,150 +1,171 b'' | |||||
1 | """ Defines a KernelManager that provides signals and slots. |
|
1 | """ Defines a KernelManager that provides signals and slots. | |
2 | """ |
|
2 | """ | |
3 |
|
3 | |||
4 | # System library imports. |
|
4 | # System library imports. | |
5 | from PyQt4 import QtCore |
|
5 | from PyQt4 import QtCore | |
6 | import zmq |
|
6 | import zmq | |
7 |
|
7 | |||
8 | # IPython imports. |
|
8 | # IPython imports. | |
9 | from IPython.zmq.kernelmanager import KernelManager, SubSocketChannel, \ |
|
9 | from IPython.zmq.kernelmanager import KernelManager, SubSocketChannel, \ | |
10 | XReqSocketChannel, RepSocketChannel |
|
10 | XReqSocketChannel, RepSocketChannel | |
11 | from util import MetaQObjectHasTraits |
|
11 | from util import MetaQObjectHasTraits | |
12 |
|
12 | |||
13 |
|
13 | |||
14 | class QtSubSocketChannel(SubSocketChannel, QtCore.QObject): |
|
14 | class QtSubSocketChannel(SubSocketChannel, QtCore.QObject): | |
15 |
|
15 | |||
16 | # Emitted when any message is received. |
|
16 | # Emitted when any message is received. | |
17 | message_received = QtCore.pyqtSignal(object) |
|
17 | message_received = QtCore.pyqtSignal(object) | |
18 |
|
18 | |||
19 | # Emitted when a message of type 'pyout' or 'stdout' is received. |
|
19 | # Emitted when a message of type 'pyout' or 'stdout' is received. | |
20 | output_received = QtCore.pyqtSignal(object) |
|
20 | output_received = QtCore.pyqtSignal(object) | |
21 |
|
21 | |||
22 | # Emitted when a message of type 'pyerr' or 'stderr' is received. |
|
22 | # Emitted when a message of type 'pyerr' or 'stderr' is received. | |
23 | error_received = QtCore.pyqtSignal(object) |
|
23 | error_received = QtCore.pyqtSignal(object) | |
24 |
|
24 | |||
25 | #--------------------------------------------------------------------------- |
|
25 | #--------------------------------------------------------------------------- | |
26 | # 'object' interface |
|
26 | # 'object' interface | |
27 | #--------------------------------------------------------------------------- |
|
27 | #--------------------------------------------------------------------------- | |
28 |
|
28 | |||
29 | def __init__(self, *args, **kw): |
|
29 | def __init__(self, *args, **kw): | |
30 | """ Reimplemented to ensure that QtCore.QObject is initialized first. |
|
30 | """ Reimplemented to ensure that QtCore.QObject is initialized first. | |
31 | """ |
|
31 | """ | |
32 | QtCore.QObject.__init__(self) |
|
32 | QtCore.QObject.__init__(self) | |
33 | SubSocketChannel.__init__(self, *args, **kw) |
|
33 | SubSocketChannel.__init__(self, *args, **kw) | |
34 |
|
34 | |||
35 | #--------------------------------------------------------------------------- |
|
35 | #--------------------------------------------------------------------------- | |
36 | # 'SubSocketChannel' interface |
|
36 | # 'SubSocketChannel' interface | |
37 | #--------------------------------------------------------------------------- |
|
37 | #--------------------------------------------------------------------------- | |
38 |
|
38 | |||
39 | def call_handlers(self, msg): |
|
39 | def call_handlers(self, msg): | |
40 | """ Reimplemented to emit signals instead of making callbacks. |
|
40 | """ Reimplemented to emit signals instead of making callbacks. | |
41 | """ |
|
41 | """ | |
42 | # Emit the generic signal. |
|
42 | # Emit the generic signal. | |
43 | self.message_received.emit(msg) |
|
43 | self.message_received.emit(msg) | |
44 |
|
44 | |||
45 | # Emit signals for specialized message types. |
|
45 | # Emit signals for specialized message types. | |
46 | msg_type = msg['msg_type'] |
|
46 | msg_type = msg['msg_type'] | |
47 | if msg_type in ('pyout', 'stdout'): |
|
47 | if msg_type in ('pyout', 'stdout'): | |
48 | self.output_received.emit(msg) |
|
48 | self.output_received.emit(msg) | |
49 | elif msg_type in ('pyerr', 'stderr'): |
|
49 | elif msg_type in ('pyerr', 'stderr'): | |
50 | self.error_received.emit(msg) |
|
50 | self.error_received.emit(msg) | |
51 |
|
51 | |||
52 | def flush(self): |
|
52 | def flush(self): | |
53 | """ Reimplemented to ensure that signals are dispatched immediately. |
|
53 | """ Reimplemented to ensure that signals are dispatched immediately. | |
54 | """ |
|
54 | """ | |
55 | super(QtSubSocketChannel, self).flush() |
|
55 | super(QtSubSocketChannel, self).flush() | |
56 | QtCore.QCoreApplication.instance().processEvents() |
|
56 | QtCore.QCoreApplication.instance().processEvents() | |
57 |
|
57 | |||
58 |
|
58 | |||
59 | class QtXReqSocketChannel(XReqSocketChannel, QtCore.QObject): |
|
59 | class QtXReqSocketChannel(XReqSocketChannel, QtCore.QObject): | |
60 |
|
60 | |||
61 | # Emitted when any message is received. |
|
61 | # Emitted when any message is received. | |
62 | message_received = QtCore.pyqtSignal(object) |
|
62 | message_received = QtCore.pyqtSignal(object) | |
63 |
|
63 | |||
64 | # Emitted when a reply has been received for the corresponding request type. |
|
64 | # Emitted when a reply has been received for the corresponding request type. | |
65 | execute_reply = QtCore.pyqtSignal(object) |
|
65 | execute_reply = QtCore.pyqtSignal(object) | |
66 | complete_reply = QtCore.pyqtSignal(object) |
|
66 | complete_reply = QtCore.pyqtSignal(object) | |
67 | object_info_reply = QtCore.pyqtSignal(object) |
|
67 | object_info_reply = QtCore.pyqtSignal(object) | |
68 |
|
68 | |||
69 | #--------------------------------------------------------------------------- |
|
69 | #--------------------------------------------------------------------------- | |
70 | # 'object' interface |
|
70 | # 'object' interface | |
71 | #--------------------------------------------------------------------------- |
|
71 | #--------------------------------------------------------------------------- | |
72 |
|
72 | |||
73 | def __init__(self, *args, **kw): |
|
73 | def __init__(self, *args, **kw): | |
74 | """ Reimplemented to ensure that QtCore.QObject is initialized first. |
|
74 | """ Reimplemented to ensure that QtCore.QObject is initialized first. | |
75 | """ |
|
75 | """ | |
76 | QtCore.QObject.__init__(self) |
|
76 | QtCore.QObject.__init__(self) | |
77 | XReqSocketChannel.__init__(self, *args, **kw) |
|
77 | XReqSocketChannel.__init__(self, *args, **kw) | |
78 |
|
78 | |||
79 | #--------------------------------------------------------------------------- |
|
79 | #--------------------------------------------------------------------------- | |
80 | # 'XReqSocketChannel' interface |
|
80 | # 'XReqSocketChannel' interface | |
81 | #--------------------------------------------------------------------------- |
|
81 | #--------------------------------------------------------------------------- | |
82 |
|
82 | |||
83 | def call_handlers(self, msg): |
|
83 | def call_handlers(self, msg): | |
84 | """ Reimplemented to emit signals instead of making callbacks. |
|
84 | """ Reimplemented to emit signals instead of making callbacks. | |
85 | """ |
|
85 | """ | |
86 | # Emit the generic signal. |
|
86 | # Emit the generic signal. | |
87 | self.message_received.emit(msg) |
|
87 | self.message_received.emit(msg) | |
88 |
|
88 | |||
89 | # Emit signals for specialized message types. |
|
89 | # Emit signals for specialized message types. | |
90 | msg_type = msg['msg_type'] |
|
90 | msg_type = msg['msg_type'] | |
91 | signal = getattr(self, msg_type, None) |
|
91 | signal = getattr(self, msg_type, None) | |
92 | if signal: |
|
92 | if signal: | |
93 | signal.emit(msg) |
|
93 | signal.emit(msg) | |
94 |
|
94 | |||
95 |
|
95 | |||
96 | class QtRepSocketChannel(RepSocketChannel, QtCore.QObject): |
|
96 | class QtRepSocketChannel(RepSocketChannel, QtCore.QObject): | |
97 |
|
97 | |||
|
98 | # Emitted when any message is received. | |||
|
99 | message_received = QtCore.pyqtSignal(object) | |||
|
100 | ||||
|
101 | # Emitted when a readline request is received. | |||
|
102 | readline_requested = QtCore.pyqtSignal(object) | |||
|
103 | ||||
98 | #--------------------------------------------------------------------------- |
|
104 | #--------------------------------------------------------------------------- | |
99 | # 'object' interface |
|
105 | # 'object' interface | |
100 | #--------------------------------------------------------------------------- |
|
106 | #--------------------------------------------------------------------------- | |
101 |
|
107 | |||
102 | def __init__(self, *args, **kw): |
|
108 | def __init__(self, *args, **kw): | |
103 | """ Reimplemented to ensure that QtCore.QObject is initialized first. |
|
109 | """ Reimplemented to ensure that QtCore.QObject is initialized first. | |
104 | """ |
|
110 | """ | |
105 | QtCore.QObject.__init__(self) |
|
111 | QtCore.QObject.__init__(self) | |
106 | RepSocketChannel.__init__(self, *args, **kw) |
|
112 | RepSocketChannel.__init__(self, *args, **kw) | |
107 |
|
113 | |||
|
114 | #--------------------------------------------------------------------------- | |||
|
115 | # 'RepSocketChannel' interface | |||
|
116 | #--------------------------------------------------------------------------- | |||
|
117 | ||||
|
118 | def call_handlers(self, msg): | |||
|
119 | """ Reimplemented to emit signals instead of making callbacks. | |||
|
120 | """ | |||
|
121 | # Emit the generic signal. | |||
|
122 | self.message_received.emit(msg) | |||
|
123 | ||||
|
124 | # Emit signals for specialized message types. | |||
|
125 | msg_type = msg['msg_type'] | |||
|
126 | if msg_type == 'readline_request': | |||
|
127 | self.readline_requested.emit(msg) | |||
|
128 | ||||
108 |
|
129 | |||
109 | class QtKernelManager(KernelManager, QtCore.QObject): |
|
130 | class QtKernelManager(KernelManager, QtCore.QObject): | |
110 | """ A KernelManager that provides signals and slots. |
|
131 | """ A KernelManager that provides signals and slots. | |
111 | """ |
|
132 | """ | |
112 |
|
133 | |||
113 | __metaclass__ = MetaQObjectHasTraits |
|
134 | __metaclass__ = MetaQObjectHasTraits | |
114 |
|
135 | |||
115 | # Emitted when the kernel manager has started listening. |
|
136 | # Emitted when the kernel manager has started listening. | |
116 | started_channels = QtCore.pyqtSignal() |
|
137 | started_channels = QtCore.pyqtSignal() | |
117 |
|
138 | |||
118 | # Emitted when the kernel manager has stopped listening. |
|
139 | # Emitted when the kernel manager has stopped listening. | |
119 | stopped_channels = QtCore.pyqtSignal() |
|
140 | stopped_channels = QtCore.pyqtSignal() | |
120 |
|
141 | |||
121 | # Use Qt-specific channel classes that emit signals. |
|
142 | # Use Qt-specific channel classes that emit signals. | |
122 | sub_channel_class = QtSubSocketChannel |
|
143 | sub_channel_class = QtSubSocketChannel | |
123 | xreq_channel_class = QtXReqSocketChannel |
|
144 | xreq_channel_class = QtXReqSocketChannel | |
124 | rep_channel_class = QtRepSocketChannel |
|
145 | rep_channel_class = QtRepSocketChannel | |
125 |
|
146 | |||
126 | #--------------------------------------------------------------------------- |
|
147 | #--------------------------------------------------------------------------- | |
127 | # 'object' interface |
|
148 | # 'object' interface | |
128 | #--------------------------------------------------------------------------- |
|
149 | #--------------------------------------------------------------------------- | |
129 |
|
150 | |||
130 | def __init__(self, *args, **kw): |
|
151 | def __init__(self, *args, **kw): | |
131 | """ Reimplemented to ensure that QtCore.QObject is initialized first. |
|
152 | """ Reimplemented to ensure that QtCore.QObject is initialized first. | |
132 | """ |
|
153 | """ | |
133 | QtCore.QObject.__init__(self) |
|
154 | QtCore.QObject.__init__(self) | |
134 | KernelManager.__init__(self, *args, **kw) |
|
155 | KernelManager.__init__(self, *args, **kw) | |
135 |
|
156 | |||
136 | #--------------------------------------------------------------------------- |
|
157 | #--------------------------------------------------------------------------- | |
137 | # 'KernelManager' interface |
|
158 | # 'KernelManager' interface | |
138 | #--------------------------------------------------------------------------- |
|
159 | #--------------------------------------------------------------------------- | |
139 |
|
160 | |||
140 | def start_channels(self): |
|
161 | def start_channels(self): | |
141 | """ Reimplemented to emit signal. |
|
162 | """ Reimplemented to emit signal. | |
142 | """ |
|
163 | """ | |
143 | super(QtKernelManager, self).start_channels() |
|
164 | super(QtKernelManager, self).start_channels() | |
144 | self.started_channels.emit() |
|
165 | self.started_channels.emit() | |
145 |
|
166 | |||
146 | def stop_channels(self): |
|
167 | def stop_channels(self): | |
147 | """ Reimplemented to emit signal. |
|
168 | """ Reimplemented to emit signal. | |
148 | """ |
|
169 | """ | |
149 | super(QtKernelManager, self).stop_channels() |
|
170 | super(QtKernelManager, self).stop_channels() | |
150 | self.stopped_channels.emit() |
|
171 | self.stopped_channels.emit() |
@@ -1,451 +1,452 b'' | |||||
1 | #!/usr/bin/env python |
|
1 | #!/usr/bin/env python | |
2 | """A simple interactive kernel that talks to a frontend over 0MQ. |
|
2 | """A simple interactive kernel that talks to a frontend over 0MQ. | |
3 |
|
3 | |||
4 | Things to do: |
|
4 | Things to do: | |
5 |
|
5 | |||
6 | * Finish implementing `raw_input`. |
|
6 | * Finish implementing `raw_input`. | |
7 | * Implement `set_parent` logic. Right before doing exec, the Kernel should |
|
7 | * Implement `set_parent` logic. Right before doing exec, the Kernel should | |
8 | call set_parent on all the PUB objects with the message about to be executed. |
|
8 | call set_parent on all the PUB objects with the message about to be executed. | |
9 | * Implement random port and security key logic. |
|
9 | * Implement random port and security key logic. | |
10 | * Implement control messages. |
|
10 | * Implement control messages. | |
11 | * Implement event loop and poll version. |
|
11 | * Implement event loop and poll version. | |
12 | """ |
|
12 | """ | |
13 |
|
13 | |||
14 | # Standard library imports. |
|
14 | # Standard library imports. | |
15 | import __builtin__ |
|
15 | import __builtin__ | |
16 | import os |
|
16 | import os | |
17 | import sys |
|
17 | import sys | |
18 | import time |
|
18 | import time | |
19 | import traceback |
|
19 | import traceback | |
20 | from code import CommandCompiler |
|
20 | from code import CommandCompiler | |
21 |
|
21 | |||
22 | # System library imports. |
|
22 | # System library imports. | |
23 | import zmq |
|
23 | import zmq | |
24 |
|
24 | |||
25 | # Local imports. |
|
25 | # Local imports. | |
26 | from IPython.external.argparse import ArgumentParser |
|
26 | from IPython.external.argparse import ArgumentParser | |
27 | from session import Session, Message, extract_header |
|
27 | from session import Session, Message, extract_header | |
28 | from completer import KernelCompleter |
|
28 | from completer import KernelCompleter | |
29 |
|
29 | |||
30 |
|
30 | |||
31 | class InStream(object): |
|
31 | class InStream(object): | |
32 | """ A file like object that reads from a 0MQ XREQ socket.""" |
|
32 | """ A file like object that reads from a 0MQ XREQ socket.""" | |
33 |
|
33 | |||
34 | def __init__(self, session, socket): |
|
34 | def __init__(self, session, socket): | |
35 | self.session = session |
|
35 | self.session = session | |
36 | self.socket = socket |
|
36 | self.socket = socket | |
37 |
|
37 | |||
38 | def close(self): |
|
38 | def close(self): | |
39 | self.socket = None |
|
39 | self.socket = None | |
40 |
|
40 | |||
41 | def flush(self): |
|
41 | def flush(self): | |
42 | if self.socket is None: |
|
42 | if self.socket is None: | |
43 | raise ValueError(u'I/O operation on closed file') |
|
43 | raise ValueError(u'I/O operation on closed file') | |
44 |
|
44 | |||
45 | def isatty(self): |
|
45 | def isatty(self): | |
46 | return False |
|
46 | return False | |
47 |
|
47 | |||
48 | def next(self): |
|
48 | def next(self): | |
49 | raise IOError('Seek not supported.') |
|
49 | raise IOError('Seek not supported.') | |
50 |
|
50 | |||
51 | def read(self, size=-1): |
|
51 | def read(self, size=-1): | |
52 | raise NotImplementedError |
|
52 | raise NotImplementedError | |
53 |
|
53 | |||
54 | def readline(self, size=-1): |
|
54 | def readline(self, size=-1): | |
55 | if self.socket is None: |
|
55 | if self.socket is None: | |
56 | raise ValueError(u'I/O operation on closed file') |
|
56 | raise ValueError(u'I/O operation on closed file') | |
57 | else: |
|
57 | else: | |
58 |
content = |
|
58 | content = dict(size=size) | |
59 |
msg = self.session.msg( |
|
59 | msg = self.session.msg('readline_request', content=content) | |
60 |
re |
|
60 | reply = self._request(msg) | |
|
61 | return reply['content']['line'] | |||
61 |
|
62 | |||
62 | def readlines(self, size=-1): |
|
63 | def readlines(self, size=-1): | |
63 | raise NotImplementedError |
|
64 | raise NotImplementedError | |
64 |
|
65 | |||
65 | def seek(self, offset, whence=None): |
|
66 | def seek(self, offset, whence=None): | |
66 | raise IOError('Seek not supported.') |
|
67 | raise IOError('Seek not supported.') | |
67 |
|
68 | |||
68 | def write(self, string): |
|
69 | def write(self, string): | |
69 | raise IOError('Write not supported on a read only stream.') |
|
70 | raise IOError('Write not supported on a read only stream.') | |
70 |
|
71 | |||
71 | def writelines(self, sequence): |
|
72 | def writelines(self, sequence): | |
72 | raise IOError('Write not supported on a read only stream.') |
|
73 | raise IOError('Write not supported on a read only stream.') | |
73 |
|
74 | |||
74 | def _request(self, msg): |
|
75 | def _request(self, msg): | |
75 | self.socket.send_json(msg) |
|
76 | self.socket.send_json(msg) | |
76 | while True: |
|
77 | while True: | |
77 | try: |
|
78 | try: | |
78 | reply = self.socket.recv_json(zmq.NOBLOCK) |
|
79 | reply = self.socket.recv_json(zmq.NOBLOCK) | |
79 | except zmq.ZMQError, e: |
|
80 | except zmq.ZMQError, e: | |
80 | if e.errno == zmq.EAGAIN: |
|
81 | if e.errno == zmq.EAGAIN: | |
81 | pass |
|
82 | pass | |
82 | else: |
|
83 | else: | |
83 | raise |
|
84 | raise | |
84 | else: |
|
85 | else: | |
85 | break |
|
86 | break | |
86 |
return reply |
|
87 | return reply | |
87 |
|
88 | |||
88 |
|
89 | |||
89 | class OutStream(object): |
|
90 | class OutStream(object): | |
90 | """A file like object that publishes the stream to a 0MQ PUB socket.""" |
|
91 | """A file like object that publishes the stream to a 0MQ PUB socket.""" | |
91 |
|
92 | |||
92 | def __init__(self, session, pub_socket, name, max_buffer=200): |
|
93 | def __init__(self, session, pub_socket, name, max_buffer=200): | |
93 | self.session = session |
|
94 | self.session = session | |
94 | self.pub_socket = pub_socket |
|
95 | self.pub_socket = pub_socket | |
95 | self.name = name |
|
96 | self.name = name | |
96 | self._buffer = [] |
|
97 | self._buffer = [] | |
97 | self._buffer_len = 0 |
|
98 | self._buffer_len = 0 | |
98 | self.max_buffer = max_buffer |
|
99 | self.max_buffer = max_buffer | |
99 | self.parent_header = {} |
|
100 | self.parent_header = {} | |
100 |
|
101 | |||
101 | def set_parent(self, parent): |
|
102 | def set_parent(self, parent): | |
102 | self.parent_header = extract_header(parent) |
|
103 | self.parent_header = extract_header(parent) | |
103 |
|
104 | |||
104 | def close(self): |
|
105 | def close(self): | |
105 | self.pub_socket = None |
|
106 | self.pub_socket = None | |
106 |
|
107 | |||
107 | def flush(self): |
|
108 | def flush(self): | |
108 | if self.pub_socket is None: |
|
109 | if self.pub_socket is None: | |
109 | raise ValueError(u'I/O operation on closed file') |
|
110 | raise ValueError(u'I/O operation on closed file') | |
110 | else: |
|
111 | else: | |
111 | if self._buffer: |
|
112 | if self._buffer: | |
112 | data = ''.join(self._buffer) |
|
113 | data = ''.join(self._buffer) | |
113 | content = {u'name':self.name, u'data':data} |
|
114 | content = {u'name':self.name, u'data':data} | |
114 | msg = self.session.msg(u'stream', content=content, |
|
115 | msg = self.session.msg(u'stream', content=content, | |
115 | parent=self.parent_header) |
|
116 | parent=self.parent_header) | |
116 | print>>sys.__stdout__, Message(msg) |
|
117 | print>>sys.__stdout__, Message(msg) | |
117 | self.pub_socket.send_json(msg) |
|
118 | self.pub_socket.send_json(msg) | |
118 | self._buffer_len = 0 |
|
119 | self._buffer_len = 0 | |
119 | self._buffer = [] |
|
120 | self._buffer = [] | |
120 |
|
121 | |||
121 | def isatty(self): |
|
122 | def isatty(self): | |
122 | return False |
|
123 | return False | |
123 |
|
124 | |||
124 | def next(self): |
|
125 | def next(self): | |
125 | raise IOError('Read not supported on a write only stream.') |
|
126 | raise IOError('Read not supported on a write only stream.') | |
126 |
|
127 | |||
127 | def read(self, size=None): |
|
128 | def read(self, size=None): | |
128 | raise IOError('Read not supported on a write only stream.') |
|
129 | raise IOError('Read not supported on a write only stream.') | |
129 |
|
130 | |||
130 | readline=read |
|
131 | readline=read | |
131 |
|
132 | |||
132 | def write(self, s): |
|
133 | def write(self, s): | |
133 | if self.pub_socket is None: |
|
134 | if self.pub_socket is None: | |
134 | raise ValueError('I/O operation on closed file') |
|
135 | raise ValueError('I/O operation on closed file') | |
135 | else: |
|
136 | else: | |
136 | self._buffer.append(s) |
|
137 | self._buffer.append(s) | |
137 | self._buffer_len += len(s) |
|
138 | self._buffer_len += len(s) | |
138 | self._maybe_send() |
|
139 | self._maybe_send() | |
139 |
|
140 | |||
140 | def _maybe_send(self): |
|
141 | def _maybe_send(self): | |
141 | if '\n' in self._buffer[-1]: |
|
142 | if '\n' in self._buffer[-1]: | |
142 | self.flush() |
|
143 | self.flush() | |
143 | if self._buffer_len > self.max_buffer: |
|
144 | if self._buffer_len > self.max_buffer: | |
144 | self.flush() |
|
145 | self.flush() | |
145 |
|
146 | |||
146 | def writelines(self, sequence): |
|
147 | def writelines(self, sequence): | |
147 | if self.pub_socket is None: |
|
148 | if self.pub_socket is None: | |
148 | raise ValueError('I/O operation on closed file') |
|
149 | raise ValueError('I/O operation on closed file') | |
149 | else: |
|
150 | else: | |
150 | for s in sequence: |
|
151 | for s in sequence: | |
151 | self.write(s) |
|
152 | self.write(s) | |
152 |
|
153 | |||
153 |
|
154 | |||
154 | class DisplayHook(object): |
|
155 | class DisplayHook(object): | |
155 |
|
156 | |||
156 | def __init__(self, session, pub_socket): |
|
157 | def __init__(self, session, pub_socket): | |
157 | self.session = session |
|
158 | self.session = session | |
158 | self.pub_socket = pub_socket |
|
159 | self.pub_socket = pub_socket | |
159 | self.parent_header = {} |
|
160 | self.parent_header = {} | |
160 |
|
161 | |||
161 | def __call__(self, obj): |
|
162 | def __call__(self, obj): | |
162 | if obj is None: |
|
163 | if obj is None: | |
163 | return |
|
164 | return | |
164 |
|
165 | |||
165 | __builtin__._ = obj |
|
166 | __builtin__._ = obj | |
166 | msg = self.session.msg(u'pyout', {u'data':repr(obj)}, |
|
167 | msg = self.session.msg(u'pyout', {u'data':repr(obj)}, | |
167 | parent=self.parent_header) |
|
168 | parent=self.parent_header) | |
168 | self.pub_socket.send_json(msg) |
|
169 | self.pub_socket.send_json(msg) | |
169 |
|
170 | |||
170 | def set_parent(self, parent): |
|
171 | def set_parent(self, parent): | |
171 | self.parent_header = extract_header(parent) |
|
172 | self.parent_header = extract_header(parent) | |
172 |
|
173 | |||
173 |
|
174 | |||
174 | class Kernel(object): |
|
175 | class Kernel(object): | |
175 |
|
176 | |||
176 | def __init__(self, session, reply_socket, pub_socket): |
|
177 | def __init__(self, session, reply_socket, pub_socket): | |
177 | self.session = session |
|
178 | self.session = session | |
178 | self.reply_socket = reply_socket |
|
179 | self.reply_socket = reply_socket | |
179 | self.pub_socket = pub_socket |
|
180 | self.pub_socket = pub_socket | |
180 | self.user_ns = {} |
|
181 | self.user_ns = {} | |
181 | self.history = [] |
|
182 | self.history = [] | |
182 | self.compiler = CommandCompiler() |
|
183 | self.compiler = CommandCompiler() | |
183 | self.completer = KernelCompleter(self.user_ns) |
|
184 | self.completer = KernelCompleter(self.user_ns) | |
184 | self.poll_ppid = False |
|
185 | self.poll_ppid = False | |
185 |
|
186 | |||
186 | # Build dict of handlers for message types |
|
187 | # Build dict of handlers for message types | |
187 | msg_types = [ 'execute_request', 'complete_request', |
|
188 | msg_types = [ 'execute_request', 'complete_request', | |
188 | 'object_info_request' ] |
|
189 | 'object_info_request' ] | |
189 | self.handlers = {} |
|
190 | self.handlers = {} | |
190 | for msg_type in msg_types: |
|
191 | for msg_type in msg_types: | |
191 | self.handlers[msg_type] = getattr(self, msg_type) |
|
192 | self.handlers[msg_type] = getattr(self, msg_type) | |
192 |
|
193 | |||
193 | def abort_queue(self): |
|
194 | def abort_queue(self): | |
194 | while True: |
|
195 | while True: | |
195 | try: |
|
196 | try: | |
196 | ident = self.reply_socket.recv(zmq.NOBLOCK) |
|
197 | ident = self.reply_socket.recv(zmq.NOBLOCK) | |
197 | except zmq.ZMQError, e: |
|
198 | except zmq.ZMQError, e: | |
198 | if e.errno == zmq.EAGAIN: |
|
199 | if e.errno == zmq.EAGAIN: | |
199 | break |
|
200 | break | |
200 | else: |
|
201 | else: | |
201 | assert self.reply_socket.rcvmore(), "Unexpected missing message part." |
|
202 | assert self.reply_socket.rcvmore(), "Unexpected missing message part." | |
202 | msg = self.reply_socket.recv_json() |
|
203 | msg = self.reply_socket.recv_json() | |
203 | print>>sys.__stdout__, "Aborting:" |
|
204 | print>>sys.__stdout__, "Aborting:" | |
204 | print>>sys.__stdout__, Message(msg) |
|
205 | print>>sys.__stdout__, Message(msg) | |
205 | msg_type = msg['msg_type'] |
|
206 | msg_type = msg['msg_type'] | |
206 | reply_type = msg_type.split('_')[0] + '_reply' |
|
207 | reply_type = msg_type.split('_')[0] + '_reply' | |
207 | reply_msg = self.session.msg(reply_type, {'status' : 'aborted'}, msg) |
|
208 | reply_msg = self.session.msg(reply_type, {'status' : 'aborted'}, msg) | |
208 | print>>sys.__stdout__, Message(reply_msg) |
|
209 | print>>sys.__stdout__, Message(reply_msg) | |
209 | self.reply_socket.send(ident,zmq.SNDMORE) |
|
210 | self.reply_socket.send(ident,zmq.SNDMORE) | |
210 | self.reply_socket.send_json(reply_msg) |
|
211 | self.reply_socket.send_json(reply_msg) | |
211 | # We need to wait a bit for requests to come in. This can probably |
|
212 | # We need to wait a bit for requests to come in. This can probably | |
212 | # be set shorter for true asynchronous clients. |
|
213 | # be set shorter for true asynchronous clients. | |
213 | time.sleep(0.1) |
|
214 | time.sleep(0.1) | |
214 |
|
215 | |||
215 | def execute_request(self, ident, parent): |
|
216 | def execute_request(self, ident, parent): | |
216 | try: |
|
217 | try: | |
217 | code = parent[u'content'][u'code'] |
|
218 | code = parent[u'content'][u'code'] | |
218 | except: |
|
219 | except: | |
219 | print>>sys.__stderr__, "Got bad msg: " |
|
220 | print>>sys.__stderr__, "Got bad msg: " | |
220 | print>>sys.__stderr__, Message(parent) |
|
221 | print>>sys.__stderr__, Message(parent) | |
221 | return |
|
222 | return | |
222 | pyin_msg = self.session.msg(u'pyin',{u'code':code}, parent=parent) |
|
223 | pyin_msg = self.session.msg(u'pyin',{u'code':code}, parent=parent) | |
223 | self.pub_socket.send_json(pyin_msg) |
|
224 | self.pub_socket.send_json(pyin_msg) | |
224 | try: |
|
225 | try: | |
225 | comp_code = self.compiler(code, '<zmq-kernel>') |
|
226 | comp_code = self.compiler(code, '<zmq-kernel>') | |
226 | sys.displayhook.set_parent(parent) |
|
227 | sys.displayhook.set_parent(parent) | |
227 | exec comp_code in self.user_ns, self.user_ns |
|
228 | exec comp_code in self.user_ns, self.user_ns | |
228 | except: |
|
229 | except: | |
229 | result = u'error' |
|
230 | result = u'error' | |
230 | etype, evalue, tb = sys.exc_info() |
|
231 | etype, evalue, tb = sys.exc_info() | |
231 | tb = traceback.format_exception(etype, evalue, tb) |
|
232 | tb = traceback.format_exception(etype, evalue, tb) | |
232 | exc_content = { |
|
233 | exc_content = { | |
233 | u'status' : u'error', |
|
234 | u'status' : u'error', | |
234 | u'traceback' : tb, |
|
235 | u'traceback' : tb, | |
235 | u'etype' : unicode(etype), |
|
236 | u'etype' : unicode(etype), | |
236 | u'evalue' : unicode(evalue) |
|
237 | u'evalue' : unicode(evalue) | |
237 | } |
|
238 | } | |
238 | exc_msg = self.session.msg(u'pyerr', exc_content, parent) |
|
239 | exc_msg = self.session.msg(u'pyerr', exc_content, parent) | |
239 | self.pub_socket.send_json(exc_msg) |
|
240 | self.pub_socket.send_json(exc_msg) | |
240 | reply_content = exc_content |
|
241 | reply_content = exc_content | |
241 | else: |
|
242 | else: | |
242 | reply_content = {'status' : 'ok'} |
|
243 | reply_content = {'status' : 'ok'} | |
243 | reply_msg = self.session.msg(u'execute_reply', reply_content, parent) |
|
244 | reply_msg = self.session.msg(u'execute_reply', reply_content, parent) | |
244 | print>>sys.__stdout__, Message(reply_msg) |
|
245 | print>>sys.__stdout__, Message(reply_msg) | |
245 | self.reply_socket.send(ident, zmq.SNDMORE) |
|
246 | self.reply_socket.send(ident, zmq.SNDMORE) | |
246 | self.reply_socket.send_json(reply_msg) |
|
247 | self.reply_socket.send_json(reply_msg) | |
247 | if reply_msg['content']['status'] == u'error': |
|
248 | if reply_msg['content']['status'] == u'error': | |
248 | self.abort_queue() |
|
249 | self.abort_queue() | |
249 |
|
250 | |||
250 | def complete_request(self, ident, parent): |
|
251 | def complete_request(self, ident, parent): | |
251 | matches = {'matches' : self.complete(parent), |
|
252 | matches = {'matches' : self.complete(parent), | |
252 | 'status' : 'ok'} |
|
253 | 'status' : 'ok'} | |
253 | completion_msg = self.session.send(self.reply_socket, 'complete_reply', |
|
254 | completion_msg = self.session.send(self.reply_socket, 'complete_reply', | |
254 | matches, parent, ident) |
|
255 | matches, parent, ident) | |
255 | print >> sys.__stdout__, completion_msg |
|
256 | print >> sys.__stdout__, completion_msg | |
256 |
|
257 | |||
257 | def complete(self, msg): |
|
258 | def complete(self, msg): | |
258 | return self.completer.complete(msg.content.line, msg.content.text) |
|
259 | return self.completer.complete(msg.content.line, msg.content.text) | |
259 |
|
260 | |||
260 | def object_info_request(self, ident, parent): |
|
261 | def object_info_request(self, ident, parent): | |
261 | context = parent['content']['oname'].split('.') |
|
262 | context = parent['content']['oname'].split('.') | |
262 | object_info = self.object_info(context) |
|
263 | object_info = self.object_info(context) | |
263 | msg = self.session.send(self.reply_socket, 'object_info_reply', |
|
264 | msg = self.session.send(self.reply_socket, 'object_info_reply', | |
264 | object_info, parent, ident) |
|
265 | object_info, parent, ident) | |
265 | print >> sys.__stdout__, msg |
|
266 | print >> sys.__stdout__, msg | |
266 |
|
267 | |||
267 | def object_info(self, context): |
|
268 | def object_info(self, context): | |
268 | symbol, leftover = self.symbol_from_context(context) |
|
269 | symbol, leftover = self.symbol_from_context(context) | |
269 | if symbol is not None and not leftover: |
|
270 | if symbol is not None and not leftover: | |
270 | doc = getattr(symbol, '__doc__', '') |
|
271 | doc = getattr(symbol, '__doc__', '') | |
271 | else: |
|
272 | else: | |
272 | doc = '' |
|
273 | doc = '' | |
273 | object_info = dict(docstring = doc) |
|
274 | object_info = dict(docstring = doc) | |
274 | return object_info |
|
275 | return object_info | |
275 |
|
276 | |||
276 | def symbol_from_context(self, context): |
|
277 | def symbol_from_context(self, context): | |
277 | if not context: |
|
278 | if not context: | |
278 | return None, context |
|
279 | return None, context | |
279 |
|
280 | |||
280 | base_symbol_string = context[0] |
|
281 | base_symbol_string = context[0] | |
281 | symbol = self.user_ns.get(base_symbol_string, None) |
|
282 | symbol = self.user_ns.get(base_symbol_string, None) | |
282 | if symbol is None: |
|
283 | if symbol is None: | |
283 | symbol = __builtin__.__dict__.get(base_symbol_string, None) |
|
284 | symbol = __builtin__.__dict__.get(base_symbol_string, None) | |
284 | if symbol is None: |
|
285 | if symbol is None: | |
285 | return None, context |
|
286 | return None, context | |
286 |
|
287 | |||
287 | context = context[1:] |
|
288 | context = context[1:] | |
288 | for i, name in enumerate(context): |
|
289 | for i, name in enumerate(context): | |
289 | new_symbol = getattr(symbol, name, None) |
|
290 | new_symbol = getattr(symbol, name, None) | |
290 | if new_symbol is None: |
|
291 | if new_symbol is None: | |
291 | return symbol, context[i:] |
|
292 | return symbol, context[i:] | |
292 | else: |
|
293 | else: | |
293 | symbol = new_symbol |
|
294 | symbol = new_symbol | |
294 |
|
295 | |||
295 | return symbol, [] |
|
296 | return symbol, [] | |
296 |
|
297 | |||
297 | def start(self): |
|
298 | def start(self): | |
298 | while True: |
|
299 | while True: | |
299 | if self.poll_ppid and os.getppid() == 1: |
|
300 | if self.poll_ppid and os.getppid() == 1: | |
300 | print>>sys.__stderr__, "KILLED KERNEL. No parent process." |
|
301 | print>>sys.__stderr__, "KILLED KERNEL. No parent process." | |
301 | os._exit(1) |
|
302 | os._exit(1) | |
302 |
|
303 | |||
303 | ident = self.reply_socket.recv() |
|
304 | ident = self.reply_socket.recv() | |
304 | assert self.reply_socket.rcvmore(), "Unexpected missing message part." |
|
305 | assert self.reply_socket.rcvmore(), "Unexpected missing message part." | |
305 | msg = self.reply_socket.recv_json() |
|
306 | msg = self.reply_socket.recv_json() | |
306 | omsg = Message(msg) |
|
307 | omsg = Message(msg) | |
307 | print>>sys.__stdout__ |
|
308 | print>>sys.__stdout__ | |
308 | print>>sys.__stdout__, omsg |
|
309 | print>>sys.__stdout__, omsg | |
309 | handler = self.handlers.get(omsg.msg_type, None) |
|
310 | handler = self.handlers.get(omsg.msg_type, None) | |
310 | if handler is None: |
|
311 | if handler is None: | |
311 | print >> sys.__stderr__, "UNKNOWN MESSAGE TYPE:", omsg |
|
312 | print >> sys.__stderr__, "UNKNOWN MESSAGE TYPE:", omsg | |
312 | else: |
|
313 | else: | |
313 | handler(ident, omsg) |
|
314 | handler(ident, omsg) | |
314 |
|
315 | |||
315 |
|
316 | |||
316 | def bind_port(socket, ip, port): |
|
317 | def bind_port(socket, ip, port): | |
317 | """ Binds the specified ZMQ socket. If the port is less than zero, a random |
|
318 | """ Binds the specified ZMQ socket. If the port is less than zero, a random | |
318 | port is chosen. Returns the port that was bound. |
|
319 | port is chosen. Returns the port that was bound. | |
319 | """ |
|
320 | """ | |
320 | connection = 'tcp://%s' % ip |
|
321 | connection = 'tcp://%s' % ip | |
321 | if port <= 0: |
|
322 | if port <= 0: | |
322 | port = socket.bind_to_random_port(connection) |
|
323 | port = socket.bind_to_random_port(connection) | |
323 | else: |
|
324 | else: | |
324 | connection += ':%i' % port |
|
325 | connection += ':%i' % port | |
325 | socket.bind(connection) |
|
326 | socket.bind(connection) | |
326 | return port |
|
327 | return port | |
327 |
|
328 | |||
328 | def main(): |
|
329 | def main(): | |
329 | """ Main entry point for launching a kernel. |
|
330 | """ Main entry point for launching a kernel. | |
330 | """ |
|
331 | """ | |
331 | # Parse command line arguments. |
|
332 | # Parse command line arguments. | |
332 | parser = ArgumentParser() |
|
333 | parser = ArgumentParser() | |
333 | parser.add_argument('--ip', type=str, default='127.0.0.1', |
|
334 | parser.add_argument('--ip', type=str, default='127.0.0.1', | |
334 | help='set the kernel\'s IP address [default: local]') |
|
335 | help='set the kernel\'s IP address [default: local]') | |
335 | parser.add_argument('--xrep', type=int, metavar='PORT', default=0, |
|
336 | parser.add_argument('--xrep', type=int, metavar='PORT', default=0, | |
336 | help='set the XREP channel port [default: random]') |
|
337 | help='set the XREP channel port [default: random]') | |
337 | parser.add_argument('--pub', type=int, metavar='PORT', default=0, |
|
338 | parser.add_argument('--pub', type=int, metavar='PORT', default=0, | |
338 | help='set the PUB channel port [default: random]') |
|
339 | help='set the PUB channel port [default: random]') | |
339 | parser.add_argument('--req', type=int, metavar='PORT', default=0, |
|
340 | parser.add_argument('--req', type=int, metavar='PORT', default=0, | |
340 | help='set the REQ channel port [default: random]') |
|
341 | help='set the REQ channel port [default: random]') | |
341 | parser.add_argument('--require-parent', action='store_true', |
|
342 | parser.add_argument('--require-parent', action='store_true', | |
342 | help='ensure that this process dies with its parent') |
|
343 | help='ensure that this process dies with its parent') | |
343 | namespace = parser.parse_args() |
|
344 | namespace = parser.parse_args() | |
344 |
|
345 | |||
345 | # Create a context, a session, and the kernel sockets. |
|
346 | # Create a context, a session, and the kernel sockets. | |
346 | print >>sys.__stdout__, "Starting the kernel..." |
|
347 | print >>sys.__stdout__, "Starting the kernel..." | |
347 | context = zmq.Context() |
|
348 | context = zmq.Context() | |
348 | session = Session(username=u'kernel') |
|
349 | session = Session(username=u'kernel') | |
349 |
|
350 | |||
350 | reply_socket = context.socket(zmq.XREP) |
|
351 | reply_socket = context.socket(zmq.XREP) | |
351 | xrep_port = bind_port(reply_socket, namespace.ip, namespace.xrep) |
|
352 | xrep_port = bind_port(reply_socket, namespace.ip, namespace.xrep) | |
352 | print >>sys.__stdout__, "XREP Channel on port", xrep_port |
|
353 | print >>sys.__stdout__, "XREP Channel on port", xrep_port | |
353 |
|
354 | |||
354 | pub_socket = context.socket(zmq.PUB) |
|
355 | pub_socket = context.socket(zmq.PUB) | |
355 | pub_port = bind_port(pub_socket, namespace.ip, namespace.pub) |
|
356 | pub_port = bind_port(pub_socket, namespace.ip, namespace.pub) | |
356 | print >>sys.__stdout__, "PUB Channel on port", pub_port |
|
357 | print >>sys.__stdout__, "PUB Channel on port", pub_port | |
357 |
|
358 | |||
358 | req_socket = context.socket(zmq.XREQ) |
|
359 | req_socket = context.socket(zmq.XREQ) | |
359 | req_port = bind_port(req_socket, namespace.ip, namespace.req) |
|
360 | req_port = bind_port(req_socket, namespace.ip, namespace.req) | |
360 | print >>sys.__stdout__, "REQ Channel on port", req_port |
|
361 | print >>sys.__stdout__, "REQ Channel on port", req_port | |
361 |
|
362 | |||
362 | # Redirect input streams and set a display hook. |
|
363 | # Redirect input streams and set a display hook. | |
363 | sys.stdin = InStream(session, req_socket) |
|
364 | sys.stdin = InStream(session, req_socket) | |
364 | sys.stdout = OutStream(session, pub_socket, u'stdout') |
|
365 | sys.stdout = OutStream(session, pub_socket, u'stdout') | |
365 | sys.stderr = OutStream(session, pub_socket, u'stderr') |
|
366 | sys.stderr = OutStream(session, pub_socket, u'stderr') | |
366 | sys.displayhook = DisplayHook(session, pub_socket) |
|
367 | sys.displayhook = DisplayHook(session, pub_socket) | |
367 |
|
368 | |||
368 | # Create the kernel. |
|
369 | # Create the kernel. | |
369 | kernel = Kernel(session, reply_socket, pub_socket) |
|
370 | kernel = Kernel(session, reply_socket, pub_socket) | |
370 |
|
371 | |||
371 | # Configure this kernel/process to die on parent termination, if necessary. |
|
372 | # Configure this kernel/process to die on parent termination, if necessary. | |
372 | if namespace.require_parent: |
|
373 | if namespace.require_parent: | |
373 | if sys.platform == 'linux2': |
|
374 | if sys.platform == 'linux2': | |
374 | import ctypes, ctypes.util, signal |
|
375 | import ctypes, ctypes.util, signal | |
375 | PR_SET_PDEATHSIG = 1 |
|
376 | PR_SET_PDEATHSIG = 1 | |
376 | libc = ctypes.CDLL(ctypes.util.find_library('c')) |
|
377 | libc = ctypes.CDLL(ctypes.util.find_library('c')) | |
377 | libc.prctl(PR_SET_PDEATHSIG, signal.SIGKILL) |
|
378 | libc.prctl(PR_SET_PDEATHSIG, signal.SIGKILL) | |
378 |
|
379 | |||
379 | elif sys.platform != 'win32': |
|
380 | elif sys.platform != 'win32': | |
380 | kernel.poll_ppid = True |
|
381 | kernel.poll_ppid = True | |
381 |
|
382 | |||
382 | # Start the kernel mainloop. |
|
383 | # Start the kernel mainloop. | |
383 | kernel.start() |
|
384 | kernel.start() | |
384 |
|
385 | |||
385 |
|
386 | |||
386 | def launch_kernel(xrep_port=0, pub_port=0, req_port=0, independent=False): |
|
387 | def launch_kernel(xrep_port=0, pub_port=0, req_port=0, independent=False): | |
387 | """ Launches a localhost kernel, binding to the specified ports. |
|
388 | """ Launches a localhost kernel, binding to the specified ports. | |
388 |
|
389 | |||
389 | Parameters |
|
390 | Parameters | |
390 | ---------- |
|
391 | ---------- | |
391 | xrep_port : int, optional |
|
392 | xrep_port : int, optional | |
392 | The port to use for XREP channel. |
|
393 | The port to use for XREP channel. | |
393 |
|
394 | |||
394 | pub_port : int, optional |
|
395 | pub_port : int, optional | |
395 | The port to use for the SUB channel. |
|
396 | The port to use for the SUB channel. | |
396 |
|
397 | |||
397 | req_port : int, optional |
|
398 | req_port : int, optional | |
398 | The port to use for the REQ (raw input) channel. |
|
399 | The port to use for the REQ (raw input) channel. | |
399 |
|
400 | |||
400 | independent : bool, optional (default False) |
|
401 | independent : bool, optional (default False) | |
401 | If set, the kernel process is guaranteed to survive if this process |
|
402 | If set, the kernel process is guaranteed to survive if this process | |
402 | dies. If not set, an effort is made to ensure that the kernel is killed |
|
403 | dies. If not set, an effort is made to ensure that the kernel is killed | |
403 | when this process dies. Note that in this case it is still good practice |
|
404 | when this process dies. Note that in this case it is still good practice | |
404 | to attempt to kill kernels manually before exiting. |
|
405 | to attempt to kill kernels manually before exiting. | |
405 |
|
406 | |||
406 | Returns |
|
407 | Returns | |
407 | ------- |
|
408 | ------- | |
408 | A tuple of form: |
|
409 | A tuple of form: | |
409 | (kernel_process, xrep_port, pub_port, req_port) |
|
410 | (kernel_process, xrep_port, pub_port, req_port) | |
410 | where kernel_process is a Popen object and the ports are integers. |
|
411 | where kernel_process is a Popen object and the ports are integers. | |
411 | """ |
|
412 | """ | |
412 | import socket |
|
413 | import socket | |
413 | from subprocess import Popen |
|
414 | from subprocess import Popen | |
414 |
|
415 | |||
415 | # Find open ports as necessary. |
|
416 | # Find open ports as necessary. | |
416 | ports = [] |
|
417 | ports = [] | |
417 | ports_needed = int(xrep_port <= 0) + int(pub_port <= 0) + int(req_port <= 0) |
|
418 | ports_needed = int(xrep_port <= 0) + int(pub_port <= 0) + int(req_port <= 0) | |
418 | for i in xrange(ports_needed): |
|
419 | for i in xrange(ports_needed): | |
419 | sock = socket.socket() |
|
420 | sock = socket.socket() | |
420 | sock.bind(('', 0)) |
|
421 | sock.bind(('', 0)) | |
421 | ports.append(sock) |
|
422 | ports.append(sock) | |
422 | for i, sock in enumerate(ports): |
|
423 | for i, sock in enumerate(ports): | |
423 | port = sock.getsockname()[1] |
|
424 | port = sock.getsockname()[1] | |
424 | sock.close() |
|
425 | sock.close() | |
425 | ports[i] = port |
|
426 | ports[i] = port | |
426 | if xrep_port <= 0: |
|
427 | if xrep_port <= 0: | |
427 | xrep_port = ports.pop(0) |
|
428 | xrep_port = ports.pop(0) | |
428 | if pub_port <= 0: |
|
429 | if pub_port <= 0: | |
429 | pub_port = ports.pop(0) |
|
430 | pub_port = ports.pop(0) | |
430 | if req_port <= 0: |
|
431 | if req_port <= 0: | |
431 | req_port = ports.pop(0) |
|
432 | req_port = ports.pop(0) | |
432 |
|
433 | |||
433 | # Spawn a kernel. |
|
434 | # Spawn a kernel. | |
434 | command = 'from IPython.zmq.kernel import main; main()' |
|
435 | command = 'from IPython.zmq.kernel import main; main()' | |
435 | arguments = [ sys.executable, '-c', command, '--xrep', str(xrep_port), |
|
436 | arguments = [ sys.executable, '-c', command, '--xrep', str(xrep_port), | |
436 | '--pub', str(pub_port), '--req', str(req_port) ] |
|
437 | '--pub', str(pub_port), '--req', str(req_port) ] | |
437 |
|
438 | |||
438 | if independent: |
|
439 | if independent: | |
439 | if sys.platform == 'win32': |
|
440 | if sys.platform == 'win32': | |
440 | proc = Popen(['start', '/b'] + arguments, shell=True) |
|
441 | proc = Popen(['start', '/b'] + arguments, shell=True) | |
441 | else: |
|
442 | else: | |
442 | proc = Popen(arguments, preexec_fn=lambda: os.setsid()) |
|
443 | proc = Popen(arguments, preexec_fn=lambda: os.setsid()) | |
443 |
|
444 | |||
444 | else: |
|
445 | else: | |
445 | proc = Popen(arguments + ['--require-parent']) |
|
446 | proc = Popen(arguments + ['--require-parent']) | |
446 |
|
447 | |||
447 | return proc, xrep_port, pub_port, req_port |
|
448 | return proc, xrep_port, pub_port, req_port | |
448 |
|
449 | |||
449 |
|
450 | |||
450 | if __name__ == '__main__': |
|
451 | if __name__ == '__main__': | |
451 | main() |
|
452 | main() |
@@ -1,534 +1,593 b'' | |||||
1 | """Classes to manage the interaction with a running kernel. |
|
1 | """Classes to manage the interaction with a running kernel. | |
2 |
|
2 | |||
3 | Todo |
|
3 | Todo | |
4 | ==== |
|
4 | ==== | |
5 |
|
5 | |||
6 | * Create logger to handle debugging and console messages. |
|
6 | * Create logger to handle debugging and console messages. | |
7 | """ |
|
7 | """ | |
8 |
|
8 | |||
9 | #----------------------------------------------------------------------------- |
|
9 | #----------------------------------------------------------------------------- | |
10 | # Copyright (C) 2008-2010 The IPython Development Team |
|
10 | # Copyright (C) 2008-2010 The IPython Development Team | |
11 | # |
|
11 | # | |
12 | # Distributed under the terms of the BSD License. The full license is in |
|
12 | # Distributed under the terms of the BSD License. The full license is in | |
13 | # the file COPYING, distributed as part of this software. |
|
13 | # the file COPYING, distributed as part of this software. | |
14 | #----------------------------------------------------------------------------- |
|
14 | #----------------------------------------------------------------------------- | |
15 |
|
15 | |||
16 | #----------------------------------------------------------------------------- |
|
16 | #----------------------------------------------------------------------------- | |
17 | # Imports |
|
17 | # Imports | |
18 | #----------------------------------------------------------------------------- |
|
18 | #----------------------------------------------------------------------------- | |
19 |
|
19 | |||
20 | # Standard library imports. |
|
20 | # Standard library imports. | |
21 | from Queue import Queue, Empty |
|
21 | from Queue import Queue, Empty | |
22 | from subprocess import Popen |
|
22 | from subprocess import Popen | |
23 | from threading import Thread |
|
23 | from threading import Thread | |
24 | import time |
|
24 | import time | |
25 |
|
25 | |||
26 | # System library imports. |
|
26 | # System library imports. | |
27 | import zmq |
|
27 | import zmq | |
28 | from zmq import POLLIN, POLLOUT, POLLERR |
|
28 | from zmq import POLLIN, POLLOUT, POLLERR | |
29 | from zmq.eventloop import ioloop |
|
29 | from zmq.eventloop import ioloop | |
30 |
|
30 | |||
31 | # Local imports. |
|
31 | # Local imports. | |
32 | from IPython.utils.traitlets import HasTraits, Any, Instance, Type |
|
32 | from IPython.utils.traitlets import HasTraits, Any, Instance, Type | |
33 | from kernel import launch_kernel |
|
33 | from kernel import launch_kernel | |
34 | from session import Session |
|
34 | from session import Session | |
35 |
|
35 | |||
36 | #----------------------------------------------------------------------------- |
|
36 | #----------------------------------------------------------------------------- | |
37 | # Constants and exceptions |
|
37 | # Constants and exceptions | |
38 | #----------------------------------------------------------------------------- |
|
38 | #----------------------------------------------------------------------------- | |
39 |
|
39 | |||
40 | LOCALHOST = '127.0.0.1' |
|
40 | LOCALHOST = '127.0.0.1' | |
41 |
|
41 | |||
42 | class InvalidPortNumber(Exception): |
|
42 | class InvalidPortNumber(Exception): | |
43 | pass |
|
43 | pass | |
44 |
|
44 | |||
45 | #----------------------------------------------------------------------------- |
|
45 | #----------------------------------------------------------------------------- | |
46 | # ZMQ Socket Channel classes |
|
46 | # ZMQ Socket Channel classes | |
47 | #----------------------------------------------------------------------------- |
|
47 | #----------------------------------------------------------------------------- | |
48 |
|
48 | |||
49 | class ZmqSocketChannel(Thread): |
|
49 | class ZmqSocketChannel(Thread): | |
50 | """The base class for the channels that use ZMQ sockets. |
|
50 | """The base class for the channels that use ZMQ sockets. | |
51 | """ |
|
51 | """ | |
52 | context = None |
|
52 | context = None | |
53 | session = None |
|
53 | session = None | |
54 | socket = None |
|
54 | socket = None | |
55 | ioloop = None |
|
55 | ioloop = None | |
56 | iostate = None |
|
56 | iostate = None | |
57 | _address = None |
|
57 | _address = None | |
58 |
|
58 | |||
59 | def __init__(self, context, session, address): |
|
59 | def __init__(self, context, session, address): | |
60 | """Create a channel |
|
60 | """Create a channel | |
61 |
|
61 | |||
62 | Parameters |
|
62 | Parameters | |
63 | ---------- |
|
63 | ---------- | |
64 | context : zmq.Context |
|
64 | context : zmq.Context | |
65 | The ZMQ context to use. |
|
65 | The ZMQ context to use. | |
66 | session : session.Session |
|
66 | session : session.Session | |
67 | The session to use. |
|
67 | The session to use. | |
68 | address : tuple |
|
68 | address : tuple | |
69 | Standard (ip, port) tuple that the kernel is listening on. |
|
69 | Standard (ip, port) tuple that the kernel is listening on. | |
70 | """ |
|
70 | """ | |
71 | super(ZmqSocketChannel, self).__init__() |
|
71 | super(ZmqSocketChannel, self).__init__() | |
72 | self.daemon = True |
|
72 | self.daemon = True | |
73 |
|
73 | |||
74 | self.context = context |
|
74 | self.context = context | |
75 | self.session = session |
|
75 | self.session = session | |
76 | if address[1] == 0: |
|
76 | if address[1] == 0: | |
77 | message = 'The port number for a channel cannot be 0.' |
|
77 | message = 'The port number for a channel cannot be 0.' | |
78 | raise InvalidPortNumber(message) |
|
78 | raise InvalidPortNumber(message) | |
79 | self._address = address |
|
79 | self._address = address | |
80 |
|
80 | |||
81 | def stop(self): |
|
81 | def stop(self): | |
82 | """Stop the channel's activity. |
|
82 | """Stop the channel's activity. | |
83 |
|
83 | |||
84 | This calls :method:`Thread.join` and returns when the thread |
|
84 | This calls :method:`Thread.join` and returns when the thread | |
85 | terminates. :class:`RuntimeError` will be raised if |
|
85 | terminates. :class:`RuntimeError` will be raised if | |
86 | :method:`self.start` is called again. |
|
86 | :method:`self.start` is called again. | |
87 | """ |
|
87 | """ | |
88 | self.join() |
|
88 | self.join() | |
89 |
|
89 | |||
90 | @property |
|
90 | @property | |
91 | def address(self): |
|
91 | def address(self): | |
92 | """Get the channel's address as an (ip, port) tuple. |
|
92 | """Get the channel's address as an (ip, port) tuple. | |
93 |
|
93 | |||
94 | By the default, the address is (localhost, 0), where 0 means a random |
|
94 | By the default, the address is (localhost, 0), where 0 means a random | |
95 | port. |
|
95 | port. | |
96 | """ |
|
96 | """ | |
97 | return self._address |
|
97 | return self._address | |
98 |
|
98 | |||
99 | def add_io_state(self, state): |
|
99 | def add_io_state(self, state): | |
100 | """Add IO state to the eventloop. |
|
100 | """Add IO state to the eventloop. | |
101 |
|
101 | |||
102 | Parameters |
|
102 | Parameters | |
103 | ---------- |
|
103 | ---------- | |
104 | state : zmq.POLLIN|zmq.POLLOUT|zmq.POLLERR |
|
104 | state : zmq.POLLIN|zmq.POLLOUT|zmq.POLLERR | |
105 | The IO state flag to set. |
|
105 | The IO state flag to set. | |
106 |
|
106 | |||
107 | This is thread safe as it uses the thread safe IOLoop.add_callback. |
|
107 | This is thread safe as it uses the thread safe IOLoop.add_callback. | |
108 | """ |
|
108 | """ | |
109 | def add_io_state_callback(): |
|
109 | def add_io_state_callback(): | |
110 | if not self.iostate & state: |
|
110 | if not self.iostate & state: | |
111 | self.iostate = self.iostate | state |
|
111 | self.iostate = self.iostate | state | |
112 | self.ioloop.update_handler(self.socket, self.iostate) |
|
112 | self.ioloop.update_handler(self.socket, self.iostate) | |
113 | self.ioloop.add_callback(add_io_state_callback) |
|
113 | self.ioloop.add_callback(add_io_state_callback) | |
114 |
|
114 | |||
115 | def drop_io_state(self, state): |
|
115 | def drop_io_state(self, state): | |
116 | """Drop IO state from the eventloop. |
|
116 | """Drop IO state from the eventloop. | |
117 |
|
117 | |||
118 | Parameters |
|
118 | Parameters | |
119 | ---------- |
|
119 | ---------- | |
120 | state : zmq.POLLIN|zmq.POLLOUT|zmq.POLLERR |
|
120 | state : zmq.POLLIN|zmq.POLLOUT|zmq.POLLERR | |
121 | The IO state flag to set. |
|
121 | The IO state flag to set. | |
122 |
|
122 | |||
123 | This is thread safe as it uses the thread safe IOLoop.add_callback. |
|
123 | This is thread safe as it uses the thread safe IOLoop.add_callback. | |
124 | """ |
|
124 | """ | |
125 | def drop_io_state_callback(): |
|
125 | def drop_io_state_callback(): | |
126 | if self.iostate & state: |
|
126 | if self.iostate & state: | |
127 | self.iostate = self.iostate & (~state) |
|
127 | self.iostate = self.iostate & (~state) | |
128 | self.ioloop.update_handler(self.socket, self.iostate) |
|
128 | self.ioloop.update_handler(self.socket, self.iostate) | |
129 | self.ioloop.add_callback(drop_io_state_callback) |
|
129 | self.ioloop.add_callback(drop_io_state_callback) | |
130 |
|
130 | |||
131 |
|
131 | |||
132 | class XReqSocketChannel(ZmqSocketChannel): |
|
132 | class XReqSocketChannel(ZmqSocketChannel): | |
133 | """The XREQ channel for issues request/replies to the kernel. |
|
133 | """The XREQ channel for issues request/replies to the kernel. | |
134 | """ |
|
134 | """ | |
135 |
|
135 | |||
136 | command_queue = None |
|
136 | command_queue = None | |
137 |
|
137 | |||
138 | def __init__(self, context, session, address): |
|
138 | def __init__(self, context, session, address): | |
139 | self.command_queue = Queue() |
|
139 | self.command_queue = Queue() | |
140 | super(XReqSocketChannel, self).__init__(context, session, address) |
|
140 | super(XReqSocketChannel, self).__init__(context, session, address) | |
141 |
|
141 | |||
142 | def run(self): |
|
142 | def run(self): | |
143 | """The thread's main activity. Call start() instead.""" |
|
143 | """The thread's main activity. Call start() instead.""" | |
144 | self.socket = self.context.socket(zmq.XREQ) |
|
144 | self.socket = self.context.socket(zmq.XREQ) | |
145 | self.socket.setsockopt(zmq.IDENTITY, self.session.session) |
|
145 | self.socket.setsockopt(zmq.IDENTITY, self.session.session) | |
146 | self.socket.connect('tcp://%s:%i' % self.address) |
|
146 | self.socket.connect('tcp://%s:%i' % self.address) | |
147 | self.ioloop = ioloop.IOLoop() |
|
147 | self.ioloop = ioloop.IOLoop() | |
148 | self.iostate = POLLERR|POLLIN |
|
148 | self.iostate = POLLERR|POLLIN | |
149 | self.ioloop.add_handler(self.socket, self._handle_events, |
|
149 | self.ioloop.add_handler(self.socket, self._handle_events, | |
150 | self.iostate) |
|
150 | self.iostate) | |
151 | self.ioloop.start() |
|
151 | self.ioloop.start() | |
152 |
|
152 | |||
153 | def stop(self): |
|
153 | def stop(self): | |
154 | self.ioloop.stop() |
|
154 | self.ioloop.stop() | |
155 | super(XReqSocketChannel, self).stop() |
|
155 | super(XReqSocketChannel, self).stop() | |
156 |
|
156 | |||
157 | def call_handlers(self, msg): |
|
157 | def call_handlers(self, msg): | |
158 | """This method is called in the ioloop thread when a message arrives. |
|
158 | """This method is called in the ioloop thread when a message arrives. | |
159 |
|
159 | |||
160 | Subclasses should override this method to handle incoming messages. |
|
160 | Subclasses should override this method to handle incoming messages. | |
161 | It is important to remember that this method is called in the thread |
|
161 | It is important to remember that this method is called in the thread | |
162 | so that some logic must be done to ensure that the application leve |
|
162 | so that some logic must be done to ensure that the application leve | |
163 | handlers are called in the application thread. |
|
163 | handlers are called in the application thread. | |
164 | """ |
|
164 | """ | |
165 | raise NotImplementedError('call_handlers must be defined in a subclass.') |
|
165 | raise NotImplementedError('call_handlers must be defined in a subclass.') | |
166 |
|
166 | |||
167 | def execute(self, code): |
|
167 | def execute(self, code): | |
168 | """Execute code in the kernel. |
|
168 | """Execute code in the kernel. | |
169 |
|
169 | |||
170 | Parameters |
|
170 | Parameters | |
171 | ---------- |
|
171 | ---------- | |
172 | code : str |
|
172 | code : str | |
173 | A string of Python code. |
|
173 | A string of Python code. | |
174 |
|
174 | |||
175 | Returns |
|
175 | Returns | |
176 | ------- |
|
176 | ------- | |
177 | The msg_id of the message sent. |
|
177 | The msg_id of the message sent. | |
178 | """ |
|
178 | """ | |
179 | # Create class for content/msg creation. Related to, but possibly |
|
179 | # Create class for content/msg creation. Related to, but possibly | |
180 | # not in Session. |
|
180 | # not in Session. | |
181 | content = dict(code=code) |
|
181 | content = dict(code=code) | |
182 | msg = self.session.msg('execute_request', content) |
|
182 | msg = self.session.msg('execute_request', content) | |
183 | self._queue_request(msg) |
|
183 | self._queue_request(msg) | |
184 | return msg['header']['msg_id'] |
|
184 | return msg['header']['msg_id'] | |
185 |
|
185 | |||
186 | def complete(self, text, line, block=None): |
|
186 | def complete(self, text, line, block=None): | |
187 | """Tab complete text, line, block in the kernel's namespace. |
|
187 | """Tab complete text, line, block in the kernel's namespace. | |
188 |
|
188 | |||
189 | Parameters |
|
189 | Parameters | |
190 | ---------- |
|
190 | ---------- | |
191 | text : str |
|
191 | text : str | |
192 | The text to complete. |
|
192 | The text to complete. | |
193 | line : str |
|
193 | line : str | |
194 | The full line of text that is the surrounding context for the |
|
194 | The full line of text that is the surrounding context for the | |
195 | text to complete. |
|
195 | text to complete. | |
196 | block : str |
|
196 | block : str | |
197 | The full block of code in which the completion is being requested. |
|
197 | The full block of code in which the completion is being requested. | |
198 |
|
198 | |||
199 | Returns |
|
199 | Returns | |
200 | ------- |
|
200 | ------- | |
201 | The msg_id of the message sent. |
|
201 | The msg_id of the message sent. | |
202 |
|
||||
203 | """ |
|
202 | """ | |
204 | content = dict(text=text, line=line) |
|
203 | content = dict(text=text, line=line) | |
205 | msg = self.session.msg('complete_request', content) |
|
204 | msg = self.session.msg('complete_request', content) | |
206 | self._queue_request(msg) |
|
205 | self._queue_request(msg) | |
207 | return msg['header']['msg_id'] |
|
206 | return msg['header']['msg_id'] | |
208 |
|
207 | |||
209 | def object_info(self, oname): |
|
208 | def object_info(self, oname): | |
210 | """Get metadata information about an object. |
|
209 | """Get metadata information about an object. | |
211 |
|
210 | |||
212 | Parameters |
|
211 | Parameters | |
213 | ---------- |
|
212 | ---------- | |
214 | oname : str |
|
213 | oname : str | |
215 | A string specifying the object name. |
|
214 | A string specifying the object name. | |
216 |
|
215 | |||
217 | Returns |
|
216 | Returns | |
218 | ------- |
|
217 | ------- | |
219 | The msg_id of the message sent. |
|
218 | The msg_id of the message sent. | |
220 | """ |
|
219 | """ | |
221 | content = dict(oname=oname) |
|
220 | content = dict(oname=oname) | |
222 | msg = self.session.msg('object_info_request', content) |
|
221 | msg = self.session.msg('object_info_request', content) | |
223 | self._queue_request(msg) |
|
222 | self._queue_request(msg) | |
224 | return msg['header']['msg_id'] |
|
223 | return msg['header']['msg_id'] | |
225 |
|
224 | |||
226 | def _handle_events(self, socket, events): |
|
225 | def _handle_events(self, socket, events): | |
227 | if events & POLLERR: |
|
226 | if events & POLLERR: | |
228 | self._handle_err() |
|
227 | self._handle_err() | |
229 | if events & POLLOUT: |
|
228 | if events & POLLOUT: | |
230 | self._handle_send() |
|
229 | self._handle_send() | |
231 | if events & POLLIN: |
|
230 | if events & POLLIN: | |
232 | self._handle_recv() |
|
231 | self._handle_recv() | |
233 |
|
232 | |||
234 | def _handle_recv(self): |
|
233 | def _handle_recv(self): | |
235 | msg = self.socket.recv_json() |
|
234 | msg = self.socket.recv_json() | |
236 | self.call_handlers(msg) |
|
235 | self.call_handlers(msg) | |
237 |
|
236 | |||
238 | def _handle_send(self): |
|
237 | def _handle_send(self): | |
239 | try: |
|
238 | try: | |
240 | msg = self.command_queue.get(False) |
|
239 | msg = self.command_queue.get(False) | |
241 | except Empty: |
|
240 | except Empty: | |
242 | pass |
|
241 | pass | |
243 | else: |
|
242 | else: | |
244 | self.socket.send_json(msg) |
|
243 | self.socket.send_json(msg) | |
245 | if self.command_queue.empty(): |
|
244 | if self.command_queue.empty(): | |
246 | self.drop_io_state(POLLOUT) |
|
245 | self.drop_io_state(POLLOUT) | |
247 |
|
246 | |||
248 | def _handle_err(self): |
|
247 | def _handle_err(self): | |
249 | # We don't want to let this go silently, so eventually we should log. |
|
248 | # We don't want to let this go silently, so eventually we should log. | |
250 | raise zmq.ZMQError() |
|
249 | raise zmq.ZMQError() | |
251 |
|
250 | |||
252 | def _queue_request(self, msg): |
|
251 | def _queue_request(self, msg): | |
253 | self.command_queue.put(msg) |
|
252 | self.command_queue.put(msg) | |
254 | self.add_io_state(POLLOUT) |
|
253 | self.add_io_state(POLLOUT) | |
255 |
|
254 | |||
256 |
|
255 | |||
257 | class SubSocketChannel(ZmqSocketChannel): |
|
256 | class SubSocketChannel(ZmqSocketChannel): | |
258 | """The SUB channel which listens for messages that the kernel publishes. |
|
257 | """The SUB channel which listens for messages that the kernel publishes. | |
259 | """ |
|
258 | """ | |
260 |
|
259 | |||
261 | def __init__(self, context, session, address): |
|
260 | def __init__(self, context, session, address): | |
262 | super(SubSocketChannel, self).__init__(context, session, address) |
|
261 | super(SubSocketChannel, self).__init__(context, session, address) | |
263 |
|
262 | |||
264 | def run(self): |
|
263 | def run(self): | |
265 | """The thread's main activity. Call start() instead.""" |
|
264 | """The thread's main activity. Call start() instead.""" | |
266 | self.socket = self.context.socket(zmq.SUB) |
|
265 | self.socket = self.context.socket(zmq.SUB) | |
267 | self.socket.setsockopt(zmq.SUBSCRIBE,'') |
|
266 | self.socket.setsockopt(zmq.SUBSCRIBE,'') | |
268 | self.socket.setsockopt(zmq.IDENTITY, self.session.session) |
|
267 | self.socket.setsockopt(zmq.IDENTITY, self.session.session) | |
269 | self.socket.connect('tcp://%s:%i' % self.address) |
|
268 | self.socket.connect('tcp://%s:%i' % self.address) | |
270 | self.ioloop = ioloop.IOLoop() |
|
269 | self.ioloop = ioloop.IOLoop() | |
271 | self.iostate = POLLIN|POLLERR |
|
270 | self.iostate = POLLIN|POLLERR | |
272 | self.ioloop.add_handler(self.socket, self._handle_events, |
|
271 | self.ioloop.add_handler(self.socket, self._handle_events, | |
273 | self.iostate) |
|
272 | self.iostate) | |
274 | self.ioloop.start() |
|
273 | self.ioloop.start() | |
275 |
|
274 | |||
276 | def stop(self): |
|
275 | def stop(self): | |
277 | self.ioloop.stop() |
|
276 | self.ioloop.stop() | |
278 | super(SubSocketChannel, self).stop() |
|
277 | super(SubSocketChannel, self).stop() | |
279 |
|
278 | |||
280 | def call_handlers(self, msg): |
|
279 | def call_handlers(self, msg): | |
281 | """This method is called in the ioloop thread when a message arrives. |
|
280 | """This method is called in the ioloop thread when a message arrives. | |
282 |
|
281 | |||
283 | Subclasses should override this method to handle incoming messages. |
|
282 | Subclasses should override this method to handle incoming messages. | |
284 | It is important to remember that this method is called in the thread |
|
283 | It is important to remember that this method is called in the thread | |
285 | so that some logic must be done to ensure that the application leve |
|
284 | so that some logic must be done to ensure that the application leve | |
286 | handlers are called in the application thread. |
|
285 | handlers are called in the application thread. | |
287 | """ |
|
286 | """ | |
288 | raise NotImplementedError('call_handlers must be defined in a subclass.') |
|
287 | raise NotImplementedError('call_handlers must be defined in a subclass.') | |
289 |
|
288 | |||
290 | def flush(self, timeout=1.0): |
|
289 | def flush(self, timeout=1.0): | |
291 | """Immediately processes all pending messages on the SUB channel. |
|
290 | """Immediately processes all pending messages on the SUB channel. | |
292 |
|
291 | |||
293 | This method is thread safe. |
|
292 | This method is thread safe. | |
294 |
|
293 | |||
295 | Parameters |
|
294 | Parameters | |
296 | ---------- |
|
295 | ---------- | |
297 | timeout : float, optional |
|
296 | timeout : float, optional | |
298 | The maximum amount of time to spend flushing, in seconds. The |
|
297 | The maximum amount of time to spend flushing, in seconds. The | |
299 | default is one second. |
|
298 | default is one second. | |
300 | """ |
|
299 | """ | |
301 | # We do the IOLoop callback process twice to ensure that the IOLoop |
|
300 | # We do the IOLoop callback process twice to ensure that the IOLoop | |
302 | # gets to perform at least one full poll. |
|
301 | # gets to perform at least one full poll. | |
303 | stop_time = time.time() + timeout |
|
302 | stop_time = time.time() + timeout | |
304 | for i in xrange(2): |
|
303 | for i in xrange(2): | |
305 | self._flushed = False |
|
304 | self._flushed = False | |
306 | self.ioloop.add_callback(self._flush) |
|
305 | self.ioloop.add_callback(self._flush) | |
307 | while not self._flushed and time.time() < stop_time: |
|
306 | while not self._flushed and time.time() < stop_time: | |
308 | time.sleep(0.01) |
|
307 | time.sleep(0.01) | |
309 |
|
308 | |||
310 | def _handle_events(self, socket, events): |
|
309 | def _handle_events(self, socket, events): | |
311 | # Turn on and off POLLOUT depending on if we have made a request |
|
310 | # Turn on and off POLLOUT depending on if we have made a request | |
312 | if events & POLLERR: |
|
311 | if events & POLLERR: | |
313 | self._handle_err() |
|
312 | self._handle_err() | |
314 | if events & POLLIN: |
|
313 | if events & POLLIN: | |
315 | self._handle_recv() |
|
314 | self._handle_recv() | |
316 |
|
315 | |||
317 | def _handle_err(self): |
|
316 | def _handle_err(self): | |
318 | # We don't want to let this go silently, so eventually we should log. |
|
317 | # We don't want to let this go silently, so eventually we should log. | |
319 | raise zmq.ZMQError() |
|
318 | raise zmq.ZMQError() | |
320 |
|
319 | |||
321 | def _handle_recv(self): |
|
320 | def _handle_recv(self): | |
322 | # Get all of the messages we can |
|
321 | # Get all of the messages we can | |
323 | while True: |
|
322 | while True: | |
324 | try: |
|
323 | try: | |
325 | msg = self.socket.recv_json(zmq.NOBLOCK) |
|
324 | msg = self.socket.recv_json(zmq.NOBLOCK) | |
326 | except zmq.ZMQError: |
|
325 | except zmq.ZMQError: | |
327 | # Check the errno? |
|
326 | # Check the errno? | |
328 | # Will this tigger POLLERR? |
|
327 | # Will this tigger POLLERR? | |
329 | break |
|
328 | break | |
330 | else: |
|
329 | else: | |
331 | self.call_handlers(msg) |
|
330 | self.call_handlers(msg) | |
332 |
|
331 | |||
333 | def _flush(self): |
|
332 | def _flush(self): | |
334 | """Callback for :method:`self.flush`.""" |
|
333 | """Callback for :method:`self.flush`.""" | |
335 | self._flushed = True |
|
334 | self._flushed = True | |
336 |
|
335 | |||
337 |
|
336 | |||
338 | class RepSocketChannel(ZmqSocketChannel): |
|
337 | class RepSocketChannel(ZmqSocketChannel): | |
339 | """A reply channel to handle raw_input requests that the kernel makes.""" |
|
338 | """A reply channel to handle raw_input requests that the kernel makes.""" | |
340 |
|
339 | |||
|
340 | msg_queue = None | |||
|
341 | ||||
|
342 | def __init__(self, context, session, address): | |||
|
343 | self.msg_queue = Queue() | |||
|
344 | super(RepSocketChannel, self).__init__(context, session, address) | |||
|
345 | ||||
341 | def run(self): |
|
346 | def run(self): | |
342 | """The thread's main activity. Call start() instead.""" |
|
347 | """The thread's main activity. Call start() instead.""" | |
|
348 | self.socket = self.context.socket(zmq.XREQ) | |||
|
349 | self.socket.setsockopt(zmq.IDENTITY, self.session.session) | |||
|
350 | self.socket.connect('tcp://%s:%i' % self.address) | |||
343 | self.ioloop = ioloop.IOLoop() |
|
351 | self.ioloop = ioloop.IOLoop() | |
|
352 | self.iostate = POLLERR|POLLIN | |||
|
353 | self.ioloop.add_handler(self.socket, self._handle_events, | |||
|
354 | self.iostate) | |||
344 | self.ioloop.start() |
|
355 | self.ioloop.start() | |
345 |
|
356 | |||
346 | def stop(self): |
|
357 | def stop(self): | |
347 | self.ioloop.stop() |
|
358 | self.ioloop.stop() | |
348 | super(RepSocketChannel, self).stop() |
|
359 | super(RepSocketChannel, self).stop() | |
349 |
|
360 | |||
350 | def on_raw_input(self): |
|
361 | def call_handlers(self, msg): | |
351 | pass |
|
362 | """This method is called in the ioloop thread when a message arrives. | |
|
363 | ||||
|
364 | Subclasses should override this method to handle incoming messages. | |||
|
365 | It is important to remember that this method is called in the thread | |||
|
366 | so that some logic must be done to ensure that the application leve | |||
|
367 | handlers are called in the application thread. | |||
|
368 | """ | |||
|
369 | raise NotImplementedError('call_handlers must be defined in a subclass.') | |||
|
370 | ||||
|
371 | def readline(self, line): | |||
|
372 | """A send a line of raw input to the kernel. | |||
|
373 | ||||
|
374 | Parameters | |||
|
375 | ---------- | |||
|
376 | line : str | |||
|
377 | The line of the input. | |||
|
378 | """ | |||
|
379 | content = dict(line=line) | |||
|
380 | msg = self.session.msg('readline_reply', content) | |||
|
381 | self._queue_reply(msg) | |||
|
382 | ||||
|
383 | def _handle_events(self, socket, events): | |||
|
384 | if events & POLLERR: | |||
|
385 | self._handle_err() | |||
|
386 | if events & POLLOUT: | |||
|
387 | self._handle_send() | |||
|
388 | if events & POLLIN: | |||
|
389 | self._handle_recv() | |||
|
390 | ||||
|
391 | def _handle_recv(self): | |||
|
392 | msg = self.socket.recv_json() | |||
|
393 | self.call_handlers(msg) | |||
|
394 | ||||
|
395 | def _handle_send(self): | |||
|
396 | try: | |||
|
397 | msg = self.msg_queue.get(False) | |||
|
398 | except Empty: | |||
|
399 | pass | |||
|
400 | else: | |||
|
401 | self.socket.send_json(msg) | |||
|
402 | if self.msg_queue.empty(): | |||
|
403 | self.drop_io_state(POLLOUT) | |||
|
404 | ||||
|
405 | def _handle_err(self): | |||
|
406 | # We don't want to let this go silently, so eventually we should log. | |||
|
407 | raise zmq.ZMQError() | |||
|
408 | ||||
|
409 | def _queue_reply(self, msg): | |||
|
410 | self.msg_queue.put(msg) | |||
|
411 | self.add_io_state(POLLOUT) | |||
352 |
|
412 | |||
353 |
|
413 | |||
354 | #----------------------------------------------------------------------------- |
|
414 | #----------------------------------------------------------------------------- | |
355 | # Main kernel manager class |
|
415 | # Main kernel manager class | |
356 | #----------------------------------------------------------------------------- |
|
416 | #----------------------------------------------------------------------------- | |
357 |
|
417 | |||
358 |
|
||||
359 | class KernelManager(HasTraits): |
|
418 | class KernelManager(HasTraits): | |
360 | """ Manages a kernel for a frontend. |
|
419 | """ Manages a kernel for a frontend. | |
361 |
|
420 | |||
362 | The SUB channel is for the frontend to receive messages published by the |
|
421 | The SUB channel is for the frontend to receive messages published by the | |
363 | kernel. |
|
422 | kernel. | |
364 |
|
423 | |||
365 | The REQ channel is for the frontend to make requests of the kernel. |
|
424 | The REQ channel is for the frontend to make requests of the kernel. | |
366 |
|
425 | |||
367 | The REP channel is for the kernel to request stdin (raw_input) from the |
|
426 | The REP channel is for the kernel to request stdin (raw_input) from the | |
368 | frontend. |
|
427 | frontend. | |
369 | """ |
|
428 | """ | |
370 | # The PyZMQ Context to use for communication with the kernel. |
|
429 | # The PyZMQ Context to use for communication with the kernel. | |
371 | context = Instance(zmq.Context) |
|
430 | context = Instance(zmq.Context) | |
372 |
|
431 | |||
373 | # The Session to use for communication with the kernel. |
|
432 | # The Session to use for communication with the kernel. | |
374 | session = Instance(Session) |
|
433 | session = Instance(Session) | |
375 |
|
434 | |||
376 | # The classes to use for the various channels. |
|
435 | # The classes to use for the various channels. | |
377 | xreq_channel_class = Type(XReqSocketChannel) |
|
436 | xreq_channel_class = Type(XReqSocketChannel) | |
378 | sub_channel_class = Type(SubSocketChannel) |
|
437 | sub_channel_class = Type(SubSocketChannel) | |
379 | rep_channel_class = Type(RepSocketChannel) |
|
438 | rep_channel_class = Type(RepSocketChannel) | |
380 |
|
439 | |||
381 | # Protected traits. |
|
440 | # Protected traits. | |
382 | _kernel = Instance(Popen) |
|
441 | _kernel = Instance(Popen) | |
383 | _xreq_address = Any |
|
442 | _xreq_address = Any | |
384 | _sub_address = Any |
|
443 | _sub_address = Any | |
385 | _rep_address = Any |
|
444 | _rep_address = Any | |
386 | _xreq_channel = Any |
|
445 | _xreq_channel = Any | |
387 | _sub_channel = Any |
|
446 | _sub_channel = Any | |
388 | _rep_channel = Any |
|
447 | _rep_channel = Any | |
389 |
|
448 | |||
390 | def __init__(self, xreq_address=None, sub_address=None, rep_address=None, |
|
449 | def __init__(self, xreq_address=None, sub_address=None, rep_address=None, | |
391 | context=None, session=None): |
|
450 | context=None, session=None): | |
392 | self._xreq_address = (LOCALHOST, 0) if xreq_address is None else xreq_address |
|
451 | self._xreq_address = (LOCALHOST, 0) if xreq_address is None else xreq_address | |
393 | self._sub_address = (LOCALHOST, 0) if sub_address is None else sub_address |
|
452 | self._sub_address = (LOCALHOST, 0) if sub_address is None else sub_address | |
394 | self._rep_address = (LOCALHOST, 0) if rep_address is None else rep_address |
|
453 | self._rep_address = (LOCALHOST, 0) if rep_address is None else rep_address | |
395 | self.context = zmq.Context() if context is None else context |
|
454 | self.context = zmq.Context() if context is None else context | |
396 | self.session = Session() if session is None else session |
|
455 | self.session = Session() if session is None else session | |
397 |
|
456 | |||
398 | #-------------------------------------------------------------------------- |
|
457 | #-------------------------------------------------------------------------- | |
399 | # Channel management methods: |
|
458 | # Channel management methods: | |
400 | #-------------------------------------------------------------------------- |
|
459 | #-------------------------------------------------------------------------- | |
401 |
|
460 | |||
402 | def start_channels(self): |
|
461 | def start_channels(self): | |
403 | """Starts the channels for this kernel. |
|
462 | """Starts the channels for this kernel. | |
404 |
|
463 | |||
405 | This will create the channels if they do not exist and then start |
|
464 | This will create the channels if they do not exist and then start | |
406 | them. If port numbers of 0 are being used (random ports) then you |
|
465 | them. If port numbers of 0 are being used (random ports) then you | |
407 | must first call :method:`start_kernel`. If the channels have been |
|
466 | must first call :method:`start_kernel`. If the channels have been | |
408 | stopped and you call this, :class:`RuntimeError` will be raised. |
|
467 | stopped and you call this, :class:`RuntimeError` will be raised. | |
409 | """ |
|
468 | """ | |
410 | self.xreq_channel.start() |
|
469 | self.xreq_channel.start() | |
411 | self.sub_channel.start() |
|
470 | self.sub_channel.start() | |
412 | self.rep_channel.start() |
|
471 | self.rep_channel.start() | |
413 |
|
472 | |||
414 | def stop_channels(self): |
|
473 | def stop_channels(self): | |
415 | """Stops the channels for this kernel. |
|
474 | """Stops the channels for this kernel. | |
416 |
|
475 | |||
417 | This stops the channels by joining their threads. If the channels |
|
476 | This stops the channels by joining their threads. If the channels | |
418 | were not started, :class:`RuntimeError` will be raised. |
|
477 | were not started, :class:`RuntimeError` will be raised. | |
419 | """ |
|
478 | """ | |
420 | self.xreq_channel.stop() |
|
479 | self.xreq_channel.stop() | |
421 | self.sub_channel.stop() |
|
480 | self.sub_channel.stop() | |
422 | self.rep_channel.stop() |
|
481 | self.rep_channel.stop() | |
423 |
|
482 | |||
424 | @property |
|
483 | @property | |
425 | def channels_running(self): |
|
484 | def channels_running(self): | |
426 | """Are all of the channels created and running?""" |
|
485 | """Are all of the channels created and running?""" | |
427 | return self.xreq_channel.is_alive() \ |
|
486 | return self.xreq_channel.is_alive() \ | |
428 | and self.sub_channel.is_alive() \ |
|
487 | and self.sub_channel.is_alive() \ | |
429 | and self.rep_channel.is_alive() |
|
488 | and self.rep_channel.is_alive() | |
430 |
|
489 | |||
431 | #-------------------------------------------------------------------------- |
|
490 | #-------------------------------------------------------------------------- | |
432 | # Kernel process management methods: |
|
491 | # Kernel process management methods: | |
433 | #-------------------------------------------------------------------------- |
|
492 | #-------------------------------------------------------------------------- | |
434 |
|
493 | |||
435 | def start_kernel(self): |
|
494 | def start_kernel(self): | |
436 | """Starts a kernel process and configures the manager to use it. |
|
495 | """Starts a kernel process and configures the manager to use it. | |
437 |
|
496 | |||
438 | If random ports (port=0) are being used, this method must be called |
|
497 | If random ports (port=0) are being used, this method must be called | |
439 | before the channels are created. |
|
498 | before the channels are created. | |
440 | """ |
|
499 | """ | |
441 | xreq, sub, rep = self.xreq_address, self.sub_address, self.rep_address |
|
500 | xreq, sub, rep = self.xreq_address, self.sub_address, self.rep_address | |
442 | if xreq[0] != LOCALHOST or sub[0] != LOCALHOST or rep[0] != LOCALHOST: |
|
501 | if xreq[0] != LOCALHOST or sub[0] != LOCALHOST or rep[0] != LOCALHOST: | |
443 | raise RuntimeError("Can only launch a kernel on localhost." |
|
502 | raise RuntimeError("Can only launch a kernel on localhost." | |
444 | "Make sure that the '*_address' attributes are " |
|
503 | "Make sure that the '*_address' attributes are " | |
445 | "configured properly.") |
|
504 | "configured properly.") | |
446 |
|
505 | |||
447 | kernel, xrep, pub, req = launch_kernel( |
|
506 | kernel, xrep, pub, req = launch_kernel( | |
448 | xrep_port=xreq[1], pub_port=sub[1], req_port=rep[1]) |
|
507 | xrep_port=xreq[1], pub_port=sub[1], req_port=rep[1]) | |
449 | self._kernel = kernel |
|
508 | self._kernel = kernel | |
450 | self._xreq_address = (LOCALHOST, xrep) |
|
509 | self._xreq_address = (LOCALHOST, xrep) | |
451 | self._sub_address = (LOCALHOST, pub) |
|
510 | self._sub_address = (LOCALHOST, pub) | |
452 | self._rep_address = (LOCALHOST, req) |
|
511 | self._rep_address = (LOCALHOST, req) | |
453 |
|
512 | |||
454 | @property |
|
513 | @property | |
455 | def has_kernel(self): |
|
514 | def has_kernel(self): | |
456 | """Returns whether a kernel process has been specified for the kernel |
|
515 | """Returns whether a kernel process has been specified for the kernel | |
457 | manager. |
|
516 | manager. | |
458 |
|
517 | |||
459 | A kernel process can be set via 'start_kernel' or 'set_kernel'. |
|
518 | A kernel process can be set via 'start_kernel' or 'set_kernel'. | |
460 | """ |
|
519 | """ | |
461 | return self._kernel is not None |
|
520 | return self._kernel is not None | |
462 |
|
521 | |||
463 | def kill_kernel(self): |
|
522 | def kill_kernel(self): | |
464 | """ Kill the running kernel. """ |
|
523 | """ Kill the running kernel. """ | |
465 | if self._kernel is not None: |
|
524 | if self._kernel is not None: | |
466 | self._kernel.kill() |
|
525 | self._kernel.kill() | |
467 | self._kernel = None |
|
526 | self._kernel = None | |
468 | else: |
|
527 | else: | |
469 | raise RuntimeError("Cannot kill kernel. No kernel is running!") |
|
528 | raise RuntimeError("Cannot kill kernel. No kernel is running!") | |
470 |
|
529 | |||
471 | def signal_kernel(self, signum): |
|
530 | def signal_kernel(self, signum): | |
472 | """ Sends a signal to the kernel. """ |
|
531 | """ Sends a signal to the kernel. """ | |
473 | if self._kernel is not None: |
|
532 | if self._kernel is not None: | |
474 | self._kernel.send_signal(signum) |
|
533 | self._kernel.send_signal(signum) | |
475 | else: |
|
534 | else: | |
476 | raise RuntimeError("Cannot signal kernel. No kernel is running!") |
|
535 | raise RuntimeError("Cannot signal kernel. No kernel is running!") | |
477 |
|
536 | |||
478 | @property |
|
537 | @property | |
479 | def is_alive(self): |
|
538 | def is_alive(self): | |
480 | """Is the kernel process still running?""" |
|
539 | """Is the kernel process still running?""" | |
481 | if self._kernel is not None: |
|
540 | if self._kernel is not None: | |
482 | if self._kernel.poll() is None: |
|
541 | if self._kernel.poll() is None: | |
483 | return True |
|
542 | return True | |
484 | else: |
|
543 | else: | |
485 | return False |
|
544 | return False | |
486 | else: |
|
545 | else: | |
487 | # We didn't start the kernel with this KernelManager so we don't |
|
546 | # We didn't start the kernel with this KernelManager so we don't | |
488 | # know if it is running. We should use a heartbeat for this case. |
|
547 | # know if it is running. We should use a heartbeat for this case. | |
489 | return True |
|
548 | return True | |
490 |
|
549 | |||
491 | #-------------------------------------------------------------------------- |
|
550 | #-------------------------------------------------------------------------- | |
492 | # Channels used for communication with the kernel: |
|
551 | # Channels used for communication with the kernel: | |
493 | #-------------------------------------------------------------------------- |
|
552 | #-------------------------------------------------------------------------- | |
494 |
|
553 | |||
495 | @property |
|
554 | @property | |
496 | def xreq_channel(self): |
|
555 | def xreq_channel(self): | |
497 | """Get the REQ socket channel object to make requests of the kernel.""" |
|
556 | """Get the REQ socket channel object to make requests of the kernel.""" | |
498 | if self._xreq_channel is None: |
|
557 | if self._xreq_channel is None: | |
499 | self._xreq_channel = self.xreq_channel_class(self.context, |
|
558 | self._xreq_channel = self.xreq_channel_class(self.context, | |
500 | self.session, |
|
559 | self.session, | |
501 | self.xreq_address) |
|
560 | self.xreq_address) | |
502 | return self._xreq_channel |
|
561 | return self._xreq_channel | |
503 |
|
562 | |||
504 | @property |
|
563 | @property | |
505 | def sub_channel(self): |
|
564 | def sub_channel(self): | |
506 | """Get the SUB socket channel object.""" |
|
565 | """Get the SUB socket channel object.""" | |
507 | if self._sub_channel is None: |
|
566 | if self._sub_channel is None: | |
508 | self._sub_channel = self.sub_channel_class(self.context, |
|
567 | self._sub_channel = self.sub_channel_class(self.context, | |
509 | self.session, |
|
568 | self.session, | |
510 | self.sub_address) |
|
569 | self.sub_address) | |
511 | return self._sub_channel |
|
570 | return self._sub_channel | |
512 |
|
571 | |||
513 | @property |
|
572 | @property | |
514 | def rep_channel(self): |
|
573 | def rep_channel(self): | |
515 | """Get the REP socket channel object to handle stdin (raw_input).""" |
|
574 | """Get the REP socket channel object to handle stdin (raw_input).""" | |
516 | if self._rep_channel is None: |
|
575 | if self._rep_channel is None: | |
517 | self._rep_channel = self.rep_channel_class(self.context, |
|
576 | self._rep_channel = self.rep_channel_class(self.context, | |
518 | self.session, |
|
577 | self.session, | |
519 | self.rep_address) |
|
578 | self.rep_address) | |
520 | return self._rep_channel |
|
579 | return self._rep_channel | |
521 |
|
580 | |||
522 | @property |
|
581 | @property | |
523 | def xreq_address(self): |
|
582 | def xreq_address(self): | |
524 | return self._xreq_address |
|
583 | return self._xreq_address | |
525 |
|
584 | |||
526 | @property |
|
585 | @property | |
527 | def sub_address(self): |
|
586 | def sub_address(self): | |
528 | return self._sub_address |
|
587 | return self._sub_address | |
529 |
|
588 | |||
530 | @property |
|
589 | @property | |
531 | def rep_address(self): |
|
590 | def rep_address(self): | |
532 | return self._rep_address |
|
591 | return self._rep_address | |
533 |
|
592 | |||
534 |
|
593 |
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