def execute(command, host=None, bg=True, **kwds):
'''execute a command (possibly) on a remote host
Execute a process, and return the launcher. Use 'response' to retrieve the
response from the executed command. Use 'kill' to kill the launcher, and 'pid'
to get the process id for the launcher.
Inputs:
command -- command string to be executed
host -- hostname of execution target [default = None (i.e. run locally)]
bg -- run as background process? [default = True]
'''
#XXX: options, background, stdin can be set w/ kwds (also name, launcher)
bg = bool(bg) # overrides 'background'
if host in [None, '']:
from Launcher import Launcher
launcher = Launcher(**kwds)
launcher(command=command, background=bg)
else:
from LauncherSSH import LauncherSSH
opt = kwds.pop('options', '-q')
launcher = LauncherSSH(**kwds)
launcher(options=opt, command=command, host=host, background=bg)
logging.info('executing {%s}', launcher.message)
launcher.launch()
#response = launcher.response()
#launcher.kill()
#return response
return launcher
def serve(server, rhost, rport, profile='.bash_profile'):
'''begin serving RPC requests
Inputs:
server -- name of RPC server (i.e. 'ppserver')
rhost -- hostname on which a server should be launched
rport -- port number (on rhost) that server will accept request at
profile -- file on remote host that instantiates the user's environment
[default = '.bash_profile']
'''
file = '~/bin/%s.py' % server #XXX: _should_ be on the $PATH
#file = '%s.py' % server
command = "source %s; %s -p %s" % (profile, file, rport)
from LauncherSSH import LauncherSSH
rserver = LauncherSSH('%s' % command)
print 'executing {ssh %s "%s"}' % (rhost, command)
rserver.stage(options='-q',
command=command,
rhost=rhost,
fgbg='background')
rserver.launch()
response = rserver.response()
if response in ['', None]: #XXX: other responses allowed (?)
pass
else:
print response #XXX: not really error checking...
from time import sleep
delay = 2.0
sleep(delay)
return response
def serve(server,rhost,rport,profile='.bash_profile'):
'''begin serving RPC requests
Inputs:
server -- name of RPC server (i.e. 'ppserver')
rhost -- hostname on which a server should be launched
rport -- port number (on rhost) that server will accept request at
profile -- file on remote host that instantiates the user's environment
[default = '.bash_profile']
'''
file = '~/bin/%s.py' % server #XXX: _should_ be on the $PATH
#file = '%s.py' % server
command = "source %s; %s -p %s" % (profile,file,rport)
from LauncherSSH import LauncherSSH
rserver = LauncherSSH('%s' % command)
logging.info('executing {ssh %s "%s"}', rhost, command)
rserver.stage(options='-q', command=command, rhost=rhost, fgbg='background')
rserver.launch()
response = rserver.response()
logging.info('response = %r', response)
if response in ['', None]: #XXX: other responses allowed (?)
pass
else:
logging.error('invalid response = %r', response) #XXX: not really error checking...
from time import sleep
delay = 2.0
sleep(delay)
return response
def randomport(host=None):
'''select a open port on a (possibly) remote host
Inputs:
host -- hostname on which to select a open port
'''
from pathos.portpicker import randomport
if not host:
return randomport()
from pathos.LauncherSSH import LauncherSSH
from pathos.portpicker import __file__ as src
# make sure src is a .py file, not .pyc or .pyo
src = src.rstrip('co')
launcher = LauncherSSH() #XXX: use pox.which / which_python?
launcher(command='python', host=host, background=False, stdin=open(src))
logging.info('executing {python <%s} on %s', src, host)
launcher.launch()
try:
rport = int(launcher.response())
except:
from Tunnel import TunnelException
raise TunnelException("failure to pick remote port")
# return remote port number
return rport
def randomport(host=None):
'''select a open port on a (possibly) remote host
Inputs:
host -- hostname on which to select a open port
'''
from pathos.portpicker import randomport
if not host:
return randomport()
from pathos.LauncherSSH import LauncherSSH
from pathos.portpicker import __file__ as src
# make sure src is a .py file, not .pyc or .pyo
src = src.rstrip('co')
launcher = LauncherSSH() #XXX: use pox.which / which_python?
launcher(command='python', host=host, background=False, stdin=open(src))
logging.info('executing {python <%s} on %s', src, host)
launcher.launch()
try:
rport = int(launcher.response())
except:
from Tunnel import TunnelException
raise TunnelException("failure to pick remote port")
# return remote port number
return rport
def run(command, rhost, bg=True): #XXX: default should be fg=True ?
'''execute a command on a remote host
Inputs:
command -- command string to be executed
host -- hostname of execution target
bg -- run as background process? [default = True]
'''
if not bg: fgbg = 'foreground'
else: fgbg = 'background'
from LauncherSSH import LauncherSSH
launcher = LauncherSSH('%s' % command)
#print 'executing {ssh %s "%s"}' % (rhost,command)
launcher.stage(options='-q', command=command, rhost=rhost, fgbg=fgbg)
launcher.launch()
return launcher.response() #XXX: should return launcher, not just response
def run(command,rhost,bg=True): #XXX: default should be fg=True ?
'''execute a command on a remote host
Inputs:
command -- command string to be executed
host -- hostname of execution target
bg -- run as background process? [default = True]
'''
if not bg: fgbg = 'foreground'
else: fgbg = 'background'
from LauncherSSH import LauncherSSH
launcher = LauncherSSH('%s' % command)
logging.info('executing {ssh %s "%s"}', rhost, command)
launcher.stage(options='-q', command=command, rhost=rhost, fgbg=fgbg)
launcher.launch()
return launcher.response() #XXX: should return launcher, not just response
def pickport(rhost):
'''select a open port on a remote host
Inputs:
rhost -- hostname on which to select a open port
'''
from pathos.LauncherSSH import LauncherSSH
from pathos.portpicker import __file__ as src
# make sure src is a .py file, not .pyc or .pyo
src = src.rstrip('co')
launcher = LauncherSSH('pickport')
launcher.stage(command='python', rhost=rhost, #XXX: pox.which or which_python?
fgbg='foreground', stdin=open(src))
logging.info('executing {python <%s} on %s', src, rhost)
launcher.launch()
try:
rport = int(launcher.response())
except:
from Tunnel import TunnelException
raise TunnelException, "failure to pick remote port"
# return remote port number
return rport
class Inventory(Component.Inventory):
import pyre.inventory
launcher = pyre.inventory.facility('launcher',
default=LauncherSSH('launcher'))
