1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
import collections
import subprocess
from . import protocols
from . import tasks
from . import transports
STDIN = 0
STDOUT = 1
STDERR = 2
class BaseSubprocessTransport(transports.SubprocessTransport):
def __init__(self, loop, protocol, args, shell,
stdin, stdout, stderr, bufsize,
extra=None, **kwargs):
super().__init__(extra)
self._protocol = protocol
self._loop = loop
self._pipes = {}
if stdin == subprocess.PIPE:
self._pipes[STDIN] = None
if stdout == subprocess.PIPE:
self._pipes[STDOUT] = None
if stderr == subprocess.PIPE:
self._pipes[STDERR] = None
self._pending_calls = collections.deque()
self._finished = False
self._returncode = None
self._start(args=args, shell=shell, stdin=stdin, stdout=stdout,
stderr=stderr, bufsize=bufsize, **kwargs)
self._extra['subprocess'] = self._proc
def _start(self, args, shell, stdin, stdout, stderr, bufsize, **kwargs):
raise NotImplementedError
def _make_write_subprocess_pipe_proto(self, fd):
raise NotImplementedError
def _make_read_subprocess_pipe_proto(self, fd):
raise NotImplementedError
def close(self):
for proto in self._pipes.values():
proto.pipe.close()
if self._returncode is None:
self.terminate()
def get_pid(self):
return self._proc.pid
def get_returncode(self):
return self._returncode
def get_pipe_transport(self, fd):
if fd in self._pipes:
return self._pipes[fd].pipe
else:
return None
def send_signal(self, signal):
self._proc.send_signal(signal)
def terminate(self):
self._proc.terminate()
def kill(self):
self._proc.kill()
@tasks.coroutine
def _post_init(self):
proc = self._proc
loop = self._loop
if proc.stdin is not None:
transp, proto = yield from loop.connect_write_pipe(
lambda: WriteSubprocessPipeProto(self, STDIN),
proc.stdin)
if proc.stdout is not None:
transp, proto = yield from loop.connect_read_pipe(
lambda: ReadSubprocessPipeProto(self, STDOUT),
proc.stdout)
if proc.stderr is not None:
transp, proto = yield from loop.connect_read_pipe(
lambda: ReadSubprocessPipeProto(self, STDERR),
proc.stderr)
if not self._pipes:
self._try_connected()
def _call(self, cb, *data):
if self._pending_calls is not None:
self._pending_calls.append((cb, data))
else:
self._loop.call_soon(cb, *data)
def _try_connected(self):
assert self._pending_calls is not None
if all(p is not None and p.connected for p in self._pipes.values()):
self._loop.call_soon(self._protocol.connection_made, self)
for callback, data in self._pending_calls:
self._loop.call_soon(callback, *data)
self._pending_calls = None
def _pipe_connection_lost(self, fd, exc):
self._call(self._protocol.pipe_connection_lost, fd, exc)
self._try_finish()
def _pipe_data_received(self, fd, data):
self._call(self._protocol.pipe_data_received, fd, data)
def _process_exited(self, returncode):
assert returncode is not None, returncode
assert self._returncode is None, self._returncode
self._returncode = returncode
self._loop._subprocess_closed(self)
self._call(self._protocol.process_exited)
self._try_finish()
def _try_finish(self):
assert not self._finished
if self._returncode is None:
return
if all(p is not None and p.disconnected
for p in self._pipes.values()):
self._finished = True
self._loop.call_soon(self._call_connection_lost, None)
def _call_connection_lost(self, exc):
try:
self._protocol.connection_lost(exc)
finally:
self._proc = None
self._protocol = None
self._loop = None
class WriteSubprocessPipeProto(protocols.BaseProtocol):
pipe = None
def __init__(self, proc, fd):
self.proc = proc
self.fd = fd
self.connected = False
self.disconnected = False
proc._pipes[fd] = self
def connection_made(self, transport):
self.connected = True
self.pipe = transport
self.proc._try_connected()
def connection_lost(self, exc):
self.disconnected = True
self.proc._pipe_connection_lost(self.fd, exc)
def eof_received(self):
pass
class ReadSubprocessPipeProto(WriteSubprocessPipeProto,
protocols.Protocol):
def data_received(self, data):
self.proc._pipe_data_received(self.fd, data)
|
