def echo(self, n):
context = Context.current()
for x in range(n):
context.progress.details = 'hello {}'.format(x)
context.progress.report()
sleep(0.25)
return n
def __call__(self):
"""
Relay to RMI context progress reporter.
"""
context = Context.current()
context.progress.__dict__.update(self.payload.__dict__)
context.progress.report()
def __call__(self, pipe):
"""
Perform RMI on the child-side of the forked call
as follows:
- Reset the RMI context.
- Invoke the method
- Send result: retval, progress, raised exception.
All output is sent to the parent using the inter-process pipe.
:param pipe: A message pipe.
:type pipe: gofer.mp.Pipe
"""
pipe.writer = Writer(pipe.writer.fd)
try:
pipe.reader.close()
monitor = ParentMonitor(pipe.writer)
monitor.start()
context = Context.current()
context.cancelled = self._not_cancelled()
context.progress = Progress(pipe.writer)
result = self.method(*self.args, **self.kwargs)
reply = protocol.Result(result)
reply.send(pipe.writer)
except PipeBroken:
log.debug('Pipe broken.')
except Exception as e:
log.exception(str(e))
reply = protocol.Raised(e)
reply.send(pipe.writer)
def __call__(self, pipe):
"""
Perform RMI on the child-side of the forked call
as follows:
- Reset the RMI context.
- Invoke the method
- Send result: retval, progress, raised exception.
All output is sent to the parent using the inter-process pipe.
:param pipe: A message pipe.
:type pipe: gofer.mp.Pipe
"""
pipe.writer = Writer(pipe.writer.fd)
try:
pipe.reader.close()
monitor = ParentMonitor(pipe.writer)
monitor.start()
context = Context.current()
context.cancelled = self._not_cancelled()
context.progress = Progress(pipe.writer)
result = self.method(*self.args, **self.kwargs)
reply = protocol.Result(result)
reply.send(pipe.writer)
except PipeBroken:
log.debug('Pipe broken.')
except Exception as e:
log.exception(str(e))
reply = protocol.Raised(e)
reply.send(pipe.writer)
def __call__(self):
"""
Relay to RMI context progress reporter.
"""
context = Context.current()
context.progress.__dict__.update(self.payload.__dict__)
context.progress.report()
def report(self, details):
"""
Report progress.
:param details: The details to report.
:type details: dict
"""
if not self.progress_reported:
# not enabled
return
context = Context.current()
context.progress.details = details
context.progress.report()
def report(self, details):
"""
Report progress.
:param details: The details to report.
:type details: dict
"""
if not self.progress_reported:
# not enabled
return
context = Context.current()
context.progress.details = details
context.progress.report()
def run(self, *command):
"""
Run the specified command.
:param command: A command and parameters.
:type command: Iterable
:return: (status, {stdout:<str>, stderr:<str>})
:rtype: tuple
"""
details = {
STDOUT: '',
STDERR: '',
}
result = {
STDOUT: '',
STDERR: '',
}
context = Context.current()
p = Popen(command, stdout=PIPE, stderr=PIPE)
try:
while True:
n_read = 0
if context.cancelled():
p.terminate()
break
for fp, key in ((p.stdout, STDOUT), (p.stderr, STDERR)):
line = fp.readline()
if line:
n_read += len(line)
details[key] = line
result[key] += line
self.report(details)
if not n_read:
# EOF
break
p.stdout.close()
p.stderr.close()
status = p.wait()
return status, result
except OSError as e:
return -1, str(e)
def run(self, *command):
"""
Run the specified command.
:param command: A command and parameters.
:type command: Iterable
:return: (status, {stdout:<str>, stderr:<str>})
:rtype: tuple
"""
details = {
STDOUT: '',
STDERR: '',
}
result = {
STDOUT: '',
STDERR: '',
}
context = Context.current()
p = Popen(command, stdout=PIPE, stderr=PIPE)
try:
while True:
n_read = 0
if context.cancelled():
p.terminate()
break
for fp, key in ((p.stdout, STDOUT), (p.stderr, STDERR)):
line = fp.readline()
if line:
n_read += len(line)
details[key] = line
result[key] += line
self.report(details)
if not n_read:
# EOF
break
p.stdout.close()
p.stderr.close()
status = p.wait()
return status, result
except OSError as e:
return -1, str(e)
def __call__(self, pipe):
"""
Perform RMI on the child-side of the forked call
as follows:
- Reset the RMI context.
- Invoke the method
- Send result: retval, progress, raised exception.
All output is sent to the parent using the inter-process pipe.
:param pipe: A message pipe.
:type pipe: multiprocessing.Connection
"""
try:
context = Context.current()
context.cancelled = lambda: False
context.progress = Progress(pipe)
result = self.method(*self.args, **self.kwargs)
reply = protocol.Result(result)
reply.send(pipe)
except Exception, e:
log.exception(utf8(e))
reply = protocol.Raised(e)
reply.send(pipe)
def __call__(self):
"""
Invoke the RMI as follows:
- Fork
- Start the monitor.
- Read and dispatch reply messages.
:return: Whatever method returned.
"""
inbound, outbound = Pipe()
target = Target(self.method, *self.args, **self.kwargs)
child = Process(target=target, args=(outbound,))
monitor = Monitor(Context.current(), child, outbound)
try:
child.start()
monitor.start()
retval = self.read(inbound)
return retval
finally:
inbound.close()
outbound.close()
monitor.stop()
child.join()
def __call__(self):
"""
Invoke the RMI as follows:
- Fork
- Start the monitor.
- Read and dispatch reply messages.
:return: Whatever method returned.
"""
pipe = Pipe()
target = Target(self.method, *self.args, **self.kwargs)
child = Process(target, pipe)
monitor = Monitor(Context.current(), child)
try:
child.start()
monitor.start()
pipe.writer.close()
retval = self.read(pipe.reader)
return retval
finally:
pipe.close()
monitor.stop()
child.wait()
def __call__(self, pipe):
"""
Perform RMI on the child-side of the forked call
as follows:
- Reset the RMI context.
- Invoke the method
- Send result: retval, progress, raised exception.
All output is sent to the parent using the inter-process pipe.
:param pipe: A message pipe.
:type pipe: gofer.mp.Writer
"""
try:
context = Context.current()
context.cancelled = lambda: False
context.progress = Progress(pipe)
result = self.method(*self.args, **self.kwargs)
reply = protocol.Result(result)
reply.send(pipe)
except Exception, e:
log.exception(utf8(e))
reply = protocol.Raised(e)
reply.send(pipe)
