def default_from_node(cls, node):
"""
Create a default environment for this node to run.
It will be attached to stdin/stdout and commands will be logged to
stdout. The is the most obvious default to create an ``Env`` instance.
:param node: :class:`~deployer.node.base.Node` instance
"""
from deployer.pseudo_terminal import Pty
from deployer.loggers import LoggerInterface
from deployer.loggers.default import DefaultLogger
pty = Pty(stdin=sys.stdin, stdout=sys.stdout, interactive=False,
term_var=os.environ.get('TERM', ''))
logger_interface = LoggerInterface()
logger_interface.attach(DefaultLogger())
return cls(node, pty=pty, logger=logger_interface, is_sandbox=False)
def default_from_node(cls, node):
"""
Create a default environment for this node to run.
It will be attached to stdin/stdout and commands will be logged to
stdout. The is the most obvious default to create an ``Env`` instance.
:param node: :class:`~deployer.node.base.Node` instance
"""
from deployer.pseudo_terminal import Pty
from deployer.loggers import LoggerInterface
from deployer.loggers.default import DefaultLogger
pty = Pty(stdin=sys.stdin,
stdout=sys.stdout,
interactive=False,
term_var=os.environ.get('TERM', ''))
logger_interface = LoggerInterface()
logger_interface.attach(DefaultLogger())
return cls(node, pty=pty, logger=logger_interface, is_sandbox=False)
def start(settings):
"""
Start the deployment shell in standalone modus. (No parrallel execution,
no server/client. Just one interface, and everything sequential.)
"""
# Make sure that stdin and stdout are unbuffered
# The alternative is to start Python with the -u option
sys.stdin = os.fdopen(sys.stdin.fileno(), 'r', 0)
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
# Create Pty object
pty = Pty(sys.stdin, sys.stdout)
def sigwinch_handler(n, frame):
pty.trigger_resize()
signal.signal(signal.SIGWINCH, sigwinch_handler)
# Initialize settings
settings = settings()
# Loggers
logger = create_logger()
history_logger = HistoryLogger()
extra_loggers = settings.Meta.extra_loggers
logger_interface = LoggerInterface()
logger_interface.attach(logger)
logger_interface.attach(history_logger)
for l in extra_loggers:
logger_interface.attach(l)
# Start shell command loop
StandaloneShell(settings, pty, logger_interface,
history_logger.history).cmdloop()
for l in extra_loggers:
logger_interface.detach(l)
def start(settings):
"""
Start the deployment shell in standalone modus. (No parrallel execution,
no server/client. Just one interface, and everything sequential.)
"""
# Make sure that stdin and stdout are unbuffered
# The alternative is to start Python with the -u option
sys.stdin = os.fdopen(sys.stdin.fileno(), 'r', 0)
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
# Create Pty object
pty = Pty(sys.stdin, sys.stdout)
def sigwinch_handler(n, frame):
pty.trigger_resize()
signal.signal(signal.SIGWINCH, sigwinch_handler)
# Initialize settings
settings = settings()
# Loggers
logger = create_logger()
history_logger = HistoryLogger()
extra_loggers = settings.Meta.extra_loggers
logger_interface = LoggerInterface()
logger_interface.attach(logger)
logger_interface.attach(history_logger)
for l in extra_loggers:
logger_interface.attach(l)
# Start shell command loop
StandaloneShell(settings, pty, logger_interface, history_logger.history).cmdloop()
for l in extra_loggers:
logger_interface.detach(l)
def run(thr):
# Set stdin/out pair for this thread.
sys.stdout.set_handler(self.pty.stdout)
sys.stdin.set_handler(self.pty.stdin)
# Authentication
if self.requires_authentication:
try:
self.username = pty_based_auth()
authenticated = True
except NotAuthenticated:
authenticated = False
else:
authenticated = True
if authenticated:
# Create loggers
logger_interface = LoggerInterface()
in_shell_logger = DefaultLogger(self.pty.stdout, print_group=False)
# Monitor
for m in monitors:
m.session_created(self)
# Run shell
shell = WebShell(settings, self.pty, logger_interface, username=self.username)
shell.session = self # Assign session to shell
self.shell = shell
# in_shell_logger: Displaying of events in the shell itself
logger_interface.attach(in_shell_logger)
if self.command:
shell.handle(self.command)
else:
shell.cmdloop()
logger_interface.detach(in_shell_logger)
# Monitor
for m in monitors:
m.session_closed(self)
# Remove references (shell and session had circular reference)
self.shell = None
shell.session = None
# Session done
del active_sessions[self.id]
sys.__stdout__.write('Ended session, id=%s...\n' % self.id)
sys.__stdout__.flush()
# Write last dummy character to trigger the session_closed.
# (telnet session will otherwise wait for enter keypress.)
sys.stdout.write(' ')
# Remove std handlers for this thread.
sys.stdout.del_handler()
sys.stdin.del_handler()
if self.doneCallback:
self.doneCallback()
# Stop IO reader
self.reader.stopReading()
def run(thr):
# Set stdin/out pair for this thread.
sys.stdout.set_handler(self.pty.stdout)
sys.stdin.set_handler(self.pty.stdin)
# Authentication
if self.requires_authentication:
try:
self.username = pty_based_auth()
authenticated = True
except NotAuthenticated:
authenticated = False
else:
authenticated = True
if authenticated:
# Create loggers
logger_interface = LoggerInterface()
in_shell_logger = DefaultLogger(self.pty.stdout,
print_group=False)
# Monitor
for m in monitors:
m.session_created(self)
# Run shell
shell = WebShell(settings,
self.pty,
logger_interface,
username=self.username)
shell.session = self # Assign session to shell
self.shell = shell
# in_shell_logger: Displaying of events in the shell itself
logger_interface.attach(in_shell_logger)
if self.command:
shell.handle(self.command)
else:
shell.cmdloop()
logger_interface.detach(in_shell_logger)
# Monitor
for m in monitors:
m.session_closed(self)
# Remove references (shell and session had circular reference)
self.shell = None
shell.session = None
# Session done
del active_sessions[self.id]
sys.__stdout__.write('Ended session, id=%s...\n' % self.id)
sys.__stdout__.flush()
# Write last dummy character to trigger the session_closed.
# (telnet session will otherwise wait for enter keypress.)
sys.stdout.write(' ')
# Remove std handlers for this thread.
sys.stdout.del_handler()
sys.stdin.del_handler()
if self.doneCallback:
self.doneCallback()
# Stop IO reader
self.reader.stopReading()
