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@@ -1,136 +1,138 b'' | |||||
1 | """Base class for a Comm""" |
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1 | """Base class for a Comm""" | |
2 |
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2 | |||
3 | #----------------------------------------------------------------------------- |
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3 | #----------------------------------------------------------------------------- | |
4 | # Copyright (C) 2013 The IPython Development Team |
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4 | # Copyright (C) 2013 The IPython Development Team | |
5 | # |
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5 | # | |
6 | # Distributed under the terms of the BSD License. The full license is in |
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6 | # Distributed under the terms of the BSD License. The full license is in | |
7 | # the file COPYING, distributed as part of this software. |
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7 | # the file COPYING, distributed as part of this software. | |
8 | #----------------------------------------------------------------------------- |
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8 | #----------------------------------------------------------------------------- | |
9 |
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9 | |||
10 | #----------------------------------------------------------------------------- |
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10 | #----------------------------------------------------------------------------- | |
11 | # Imports |
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11 | # Imports | |
12 | #----------------------------------------------------------------------------- |
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12 | #----------------------------------------------------------------------------- | |
13 |
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13 | |||
14 | import uuid |
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14 | import uuid | |
15 |
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15 | |||
16 | from IPython.config import LoggingConfigurable |
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16 | from IPython.config import LoggingConfigurable | |
17 | from IPython.core.getipython import get_ipython |
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17 | from IPython.core.getipython import get_ipython | |
18 |
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18 | |||
19 | from IPython.utils.traitlets import Instance, Unicode, Bytes, Bool, Dict, Any |
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19 | from IPython.utils.traitlets import Instance, Unicode, Bytes, Bool, Dict, Any | |
20 |
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20 | |||
21 | #----------------------------------------------------------------------------- |
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21 | #----------------------------------------------------------------------------- | |
22 | # Code |
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22 | # Code | |
23 | #----------------------------------------------------------------------------- |
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23 | #----------------------------------------------------------------------------- | |
24 |
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24 | |||
25 | class Comm(LoggingConfigurable): |
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25 | class Comm(LoggingConfigurable): | |
26 |
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26 | |||
27 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') |
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27 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') | |
28 | def _shell_default(self): |
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28 | def _shell_default(self): | |
29 | return get_ipython() |
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29 | return get_ipython() | |
30 |
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30 | |||
31 | iopub_socket = Any() |
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31 | iopub_socket = Any() | |
32 | def _iopub_socket_default(self): |
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32 | def _iopub_socket_default(self): | |
33 | return self.shell.kernel.iopub_socket |
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33 | return self.shell.kernel.iopub_socket | |
34 | session = Instance('IPython.kernel.zmq.session.Session') |
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34 | session = Instance('IPython.kernel.zmq.session.Session') | |
35 | def _session_default(self): |
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35 | def _session_default(self): | |
36 | if self.shell is None: |
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36 | if self.shell is None: | |
37 | return |
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37 | return | |
38 | return self.shell.kernel.session |
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38 | return self.shell.kernel.session | |
39 |
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39 | |||
40 | target_name = Unicode('comm') |
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40 | target_name = Unicode('comm') | |
41 |
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41 | |||
42 | topic = Bytes() |
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42 | topic = Bytes() | |
43 | def _topic_default(self): |
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43 | def _topic_default(self): | |
44 | return ('comm-%s' % self.comm_id).encode('ascii') |
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44 | return ('comm-%s' % self.comm_id).encode('ascii') | |
45 |
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45 | |||
46 | _open_data = Dict(help="data dict, if any, to be included in comm_open") |
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46 | _open_data = Dict(help="data dict, if any, to be included in comm_open") | |
47 | _close_data = Dict(help="data dict, if any, to be included in comm_close") |
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47 | _close_data = Dict(help="data dict, if any, to be included in comm_close") | |
48 |
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48 | |||
49 | _msg_callback = Any() |
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49 | _msg_callback = Any() | |
50 | _close_callback = Any() |
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50 | _close_callback = Any() | |
51 |
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51 | |||
52 | _closed = Bool(False) |
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52 | _closed = Bool(False) | |
53 | comm_id = Unicode() |
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53 | comm_id = Unicode() | |
54 | def _comm_id_default(self): |
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54 | def _comm_id_default(self): | |
55 | return uuid.uuid4().hex |
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55 | return uuid.uuid4().hex | |
56 |
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56 | |||
57 | primary = Bool(True, help="Am I the primary or secondary Comm?") |
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57 | primary = Bool(True, help="Am I the primary or secondary Comm?") | |
58 |
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58 | |||
59 | def __init__(self, data=None, **kwargs): |
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59 | def __init__(self, data=None, **kwargs): | |
60 | super(Comm, self).__init__(**kwargs) |
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60 | super(Comm, self).__init__(**kwargs) | |
61 | get_ipython().comm_manager.register_comm(self) |
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61 | get_ipython().comm_manager.register_comm(self) | |
62 | if self.primary: |
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62 | if self.primary: | |
63 | # I am primary, open my peer. |
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63 | # I am primary, open my peer. | |
64 | self.open(data) |
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64 | self.open(data) | |
65 |
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65 | |||
66 | def _publish_msg(self, msg_type, data=None, **keys): |
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66 | def _publish_msg(self, msg_type, data=None, metadata=None, **keys): | |
67 | """Helper for sending a comm message on IOPub""" |
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67 | """Helper for sending a comm message on IOPub""" | |
68 | data = {} if data is None else data |
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68 | data = {} if data is None else data | |
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69 | metadata = {} if metadata is None else metadata | |||
69 | self.session.send(self.iopub_socket, msg_type, |
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70 | self.session.send(self.iopub_socket, msg_type, | |
70 | dict(data=data, comm_id=self.comm_id, **keys), |
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71 | dict(data=data, comm_id=self.comm_id, **keys), | |
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72 | metadata=metadata, | |||
71 | parent=self.shell.get_parent(), |
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73 | parent=self.shell.get_parent(), | |
72 | ident=self.topic, |
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74 | ident=self.topic, | |
73 | ) |
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75 | ) | |
74 |
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76 | |||
75 | def __del__(self): |
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77 | def __del__(self): | |
76 | """trigger close on gc""" |
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78 | """trigger close on gc""" | |
77 | self.close() |
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79 | self.close() | |
78 |
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80 | |||
79 | # publishing messages |
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81 | # publishing messages | |
80 |
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82 | |||
81 | def open(self, data=None): |
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83 | def open(self, data=None, metadata=None): | |
82 | """Open the frontend-side version of this comm""" |
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84 | """Open the frontend-side version of this comm""" | |
83 | if data is None: |
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85 | if data is None: | |
84 | data = self._open_data |
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86 | data = self._open_data | |
85 | self._publish_msg('comm_open', data, target_name=self.target_name) |
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87 | self._publish_msg('comm_open', data, metadata, target_name=self.target_name) | |
86 |
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88 | |||
87 | def close(self, data=None): |
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89 | def close(self, data=None, metadata=None): | |
88 | """Close the frontend-side version of this comm""" |
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90 | """Close the frontend-side version of this comm""" | |
89 | if self._closed: |
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91 | if self._closed: | |
90 | # only close once |
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92 | # only close once | |
91 | return |
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93 | return | |
92 | if data is None: |
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94 | if data is None: | |
93 | data = self._close_data |
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95 | data = self._close_data | |
94 | self._publish_msg('comm_close', data) |
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96 | self._publish_msg('comm_close', data, metadata) | |
95 | self._closed = True |
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97 | self._closed = True | |
96 |
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98 | |||
97 | def send(self, data=None): |
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99 | def send(self, data=None, metadata=None): | |
98 | """Send a message to the frontend-side version of this comm""" |
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100 | """Send a message to the frontend-side version of this comm""" | |
99 | self._publish_msg('comm_msg', data) |
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101 | self._publish_msg('comm_msg', data, metadata) | |
100 |
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102 | |||
101 | # registering callbacks |
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103 | # registering callbacks | |
102 |
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104 | |||
103 | def on_close(self, callback): |
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105 | def on_close(self, callback): | |
104 | """Register a callback for comm_close |
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106 | """Register a callback for comm_close | |
105 |
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107 | |||
106 | Will be called with the `data` of the close message. |
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108 | Will be called with the `data` of the close message. | |
107 |
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109 | |||
108 | Call `on_close(None)` to disable an existing callback. |
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110 | Call `on_close(None)` to disable an existing callback. | |
109 | """ |
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111 | """ | |
110 | self._close_callback = callback |
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112 | self._close_callback = callback | |
111 |
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113 | |||
112 | def on_msg(self, callback): |
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114 | def on_msg(self, callback): | |
113 | """Register a callback for comm_msg |
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115 | """Register a callback for comm_msg | |
114 |
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116 | |||
115 | Will be called with the `data` of any comm_msg messages. |
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117 | Will be called with the `data` of any comm_msg messages. | |
116 |
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118 | |||
117 | Call `on_msg(None)` to disable an existing callback. |
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119 | Call `on_msg(None)` to disable an existing callback. | |
118 | """ |
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120 | """ | |
119 | self._msg_callback = callback |
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121 | self._msg_callback = callback | |
120 |
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122 | |||
121 | # handling of incoming messages |
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123 | # handling of incoming messages | |
122 |
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124 | |||
123 | def handle_close(self, msg): |
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125 | def handle_close(self, msg): | |
124 | """Handle a comm_close message""" |
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126 | """Handle a comm_close message""" | |
125 | self.log.debug("handle_close[%s](%s)", self.comm_id, msg) |
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127 | self.log.debug("handle_close[%s](%s)", self.comm_id, msg) | |
126 | if self._close_callback: |
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128 | if self._close_callback: | |
127 | self._close_callback(msg) |
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129 | self._close_callback(msg) | |
128 |
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130 | |||
129 | def handle_msg(self, msg): |
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131 | def handle_msg(self, msg): | |
130 | """Handle a comm_msg message""" |
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132 | """Handle a comm_msg message""" | |
131 | self.log.debug("handle_msg[%s](%s)", self.comm_id, msg) |
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133 | self.log.debug("handle_msg[%s](%s)", self.comm_id, msg) | |
132 | if self._msg_callback: |
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134 | if self._msg_callback: | |
133 | self._msg_callback(msg) |
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135 | self._msg_callback(msg) | |
134 |
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136 | |||
135 |
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137 | |||
136 | __all__ = ['Comm'] |
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138 | __all__ = ['Comm'] |
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