예제 #1
0
                                                task.info("command_timeout"),
                                                op))
    if not task.default("USER_interactive"):
        if options.copy:
            run_copy(task, args, options.dest_path, nodeset_base, timeout,
                     options.preserve_flag, display)
        elif options.rcopy:
            run_rcopy(task, args, options.dest_path, nodeset_base, timeout,
                      options.preserve_flag, display)
        else:
            run_command(task, ' '.join(args), nodeset_base, timeout, display,
                        options.remote != 'no')

    if user_interaction:
        ttyloop(task, nodeset_base, timeout, display, options.remote != 'no')
    elif task.default("USER_interactive"):
        display.vprint_err(VERB_QUIET, \
            "ERROR: interactive mode requires a tty")
        clush_exit(1, task)

    rc = 0
    if options.maxrc:
        # Instead of clush return code, return commands retcode
        rc = task.max_retcode()
        if task.num_timeout() > 0:
            rc = 255
    clush_exit(rc, task)

if __name__ == '__main__':
    main()
예제 #2
0
def main():
    """clush script entry point"""
    sys.excepthook = clush_excepthook

    #
    # Argument management
    #
    usage = "%prog [options] command"

    parser = OptionParser(usage)

    parser.add_option("--nostdin",
                      action="store_true",
                      dest="nostdin",
                      help="don't watch for possible input from stdin")

    parser.install_config_options('clush.conf(5)')
    parser.install_nodes_options()
    parser.install_display_options(verbose_options=True)
    parser.install_filecopy_options()
    parser.install_connector_options()

    (options, args) = parser.parse_args()

    #
    # Load config file and apply overrides
    #
    config = ClushConfig(options)

    # Should we use ANSI colors for nodes?
    if config.color == "auto":
        color = sys.stdout.isatty() and (options.gatherall or \
                                         sys.stderr.isatty())
    else:
        color = config.color == "always"

    try:
        # Create and configure display object.
        display = Display(options, config, color)
    except ValueError as exc:
        parser.error("option mismatch (%s)" % exc)

    if options.groupsource:
        # Be sure -a/g -s source work as espected.
        std_group_resolver().default_source_name = options.groupsource

    # Compute the nodeset and warn for possible use of shell pathname
    # expansion (#225)
    wnodelist = []
    xnodelist = []
    if options.nodes:
        wnodelist = [NodeSet(nodes) for nodes in options.nodes]

    if options.exclude:
        xnodelist = [NodeSet(nodes) for nodes in options.exclude]

    for (opt, nodelist) in (('w', wnodelist), ('x', xnodelist)):
        for nodes in nodelist:
            if len(nodes) == 1 and exists(str(nodes)):
                display.vprint_err(
                    VERB_STD, "Warning: using '-%s %s' and "
                    "local path '%s' exists, was it expanded "
                    "by the shell?" % (opt, nodes, nodes))

    # --hostfile support (#235)
    for opt_hostfile in options.hostfile:
        try:
            fnodeset = NodeSet()
            hostfile = open(opt_hostfile)
            for line in hostfile.read().splitlines():
                fnodeset.updaten(nodes for nodes in line.split())
            hostfile.close()
            display.vprint_err(
                VERB_DEBUG,
                "Using nodeset %s from hostfile %s" % (fnodeset, opt_hostfile))
            wnodelist.append(fnodeset)
        except IOError as exc:
            # re-raise as OSError to be properly handled
            errno, strerror = exc.args
            raise OSError(errno, strerror, exc.filename)

    # Instantiate target nodeset from command line and hostfile
    nodeset_base = NodeSet.fromlist(wnodelist)
    # Instantiate filter nodeset (command line only)
    nodeset_exclude = NodeSet.fromlist(xnodelist)

    # Specified engine prevails over default engine
    DEFAULTS.engine = options.engine

    # Do we have nodes group?
    task = task_self()
    task.set_info("debug", config.verbosity >= VERB_DEBUG)
    if config.verbosity == VERB_DEBUG:
        std_group_resolver().set_verbosity(1)
    if options.nodes_all:
        all_nodeset = NodeSet.fromall()
        display.vprint(VERB_DEBUG, "Adding nodes from option -a: %s" % \
                                   all_nodeset)
        nodeset_base.add(all_nodeset)

    if options.group:
        grp_nodeset = NodeSet.fromlist(options.group,
                                       resolver=RESOLVER_NOGROUP)
        for grp in grp_nodeset:
            addingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Adding nodes from option -g %s: %s" % (grp, addingrp))
            nodeset_base.update(addingrp)

    if options.exgroup:
        grp_nodeset = NodeSet.fromlist(options.exgroup,
                                       resolver=RESOLVER_NOGROUP)
        for grp in grp_nodeset:
            removingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Excluding nodes from option -X %s: %s" % (grp, removingrp))
            nodeset_exclude.update(removingrp)

    # Do we have an exclude list? (-x ...)
    nodeset_base.difference_update(nodeset_exclude)
    if len(nodeset_base) < 1:
        parser.error('No node to run on.')

    if options.pick and options.pick < len(nodeset_base):
        # convert to string for sample as nsiter() is slower for big
        # nodesets; and we assume options.pick will remain small-ish
        keep = random.sample(nodeset_base, options.pick)
        nodeset_base.intersection_update(','.join(keep))
        if config.verbosity >= VERB_VERB:
            msg = "Picked random nodes: %s" % nodeset_base
            print Display.COLOR_RESULT_FMT % msg

    # Set open files limit.
    set_fdlimit(config.fd_max, display)

    #
    # Task management
    #
    # check for clush interactive mode
    interactive = not len(args) and \
                  not (options.copy or options.rcopy)
    # check for foreground ttys presence (input)
    stdin_isafgtty = sys.stdin.isatty() and \
        os.tcgetpgrp(sys.stdin.fileno()) == os.getpgrp()
    # check for special condition (empty command and stdin not a tty)
    if interactive and not stdin_isafgtty:
        # looks like interactive but stdin is not a tty:
        # switch to non-interactive + disable ssh pseudo-tty
        interactive = False
        # SSH: disable pseudo-tty allocation (-T)
        ssh_options = config.ssh_options or ''
        ssh_options += ' -T'
        config._set_main("ssh_options", ssh_options)
    if options.nostdin and interactive:
        parser.error("illegal option `--nostdin' in that case")

    # Force user_interaction if Clush._f_user_interaction for test purposes
    user_interaction = hasattr(sys.modules[__name__], '_f_user_interaction')
    if not options.nostdin:
        # Try user interaction: check for foreground ttys presence (ouput)
        stdout_isafgtty = sys.stdout.isatty() and \
            os.tcgetpgrp(sys.stdout.fileno()) == os.getpgrp()
        user_interaction |= stdin_isafgtty and stdout_isafgtty
    display.vprint(VERB_DEBUG, "User interaction: %s" % user_interaction)
    if user_interaction:
        # Standard input is a terminal and we want to perform some user
        # interactions in the main thread (using blocking calls), so
        # we run cluster commands in a new ClusterShell Task (a new
        # thread is created).
        task = Task()
    # else: perform everything in the main thread

    # Handle special signal only when user_interaction is set
    task.set_default("USER_handle_SIGUSR1", user_interaction)

    task.excepthook = sys.excepthook
    task.set_default("USER_stdin_worker", not (sys.stdin.isatty() or \
                                               options.nostdin or \
                                               user_interaction))
    display.vprint(VERB_DEBUG, "Create STDIN worker: %s" % \
                               task.default("USER_stdin_worker"))

    if config.verbosity >= VERB_DEBUG:
        task.set_info("debug", True)
        logging.basicConfig(level=logging.DEBUG)
        logging.debug("clush: STARTING DEBUG")
    else:
        logging.basicConfig(level=logging.CRITICAL)

    task.set_info("fanout", config.fanout)

    if options.worker:
        try:
            if options.remote == 'no':
                task.set_default('local_worker',
                                 _load_workerclass(options.worker))
            else:
                task.set_default('distant_worker',
                                 _load_workerclass(options.worker))
        except (ImportError, AttributeError):
            msg = "ERROR: Could not load worker '%s'" % options.worker
            display.vprint_err(VERB_QUIET, msg)
            clush_exit(1, task)

    if options.topofile or task._default_tree_is_enabled():
        if options.topofile:
            task.load_topology(options.topofile)
        if config.verbosity >= VERB_VERB:
            roots = len(task.topology.root.nodeset)
            gws = task.topology.inner_node_count() - roots
            msg = "enabling tree topology (%d gateways)" % gws
            print >> sys.stderr, "clush: %s" % msg

    if options.grooming_delay:
        if config.verbosity >= VERB_VERB:
            msg = Display.COLOR_RESULT_FMT % ("Grooming delay: %f" %
                                              options.grooming_delay)
            print >> sys.stderr, msg
        task.set_info("grooming_delay", options.grooming_delay)
    elif options.rcopy:
        # By default, --rcopy should inhibit grooming
        task.set_info("grooming_delay", 0)

    if config.ssh_user:
        task.set_info("ssh_user", config.ssh_user)
    if config.ssh_path:
        task.set_info("ssh_path", config.ssh_path)
    if config.ssh_options:
        task.set_info("ssh_options", config.ssh_options)
    if config.scp_path:
        task.set_info("scp_path", config.scp_path)
    if config.scp_options:
        task.set_info("scp_options", config.scp_options)
    if config.rsh_path:
        task.set_info("rsh_path", config.rsh_path)
    if config.rcp_path:
        task.set_info("rcp_path", config.rcp_path)
    if config.rsh_options:
        task.set_info("rsh_options", config.rsh_options)

    # Set detailed timeout values
    task.set_info("connect_timeout", config.connect_timeout)
    task.set_info("command_timeout", config.command_timeout)

    # Enable stdout/stderr separation
    task.set_default("stderr", not options.gatherall)

    # Disable MsgTree buffering if not gathering outputs
    task.set_default("stdout_msgtree", display.gather or display.line_mode)

    # Always disable stderr MsgTree buffering
    task.set_default("stderr_msgtree", False)

    # Set timeout at worker level when command_timeout is defined.
    if config.command_timeout > 0:
        timeout = config.command_timeout
    else:
        timeout = -1

    # Configure task custom status
    task.set_default("USER_interactive", interactive)
    task.set_default("USER_running", False)

    if (options.copy or options.rcopy) and not args:
        parser.error("--[r]copy option requires at least one argument")
    if options.copy:
        if not options.dest_path:
            # append '/' to clearly indicate a directory for tree mode
            options.dest_path = join(dirname(abspath(args[0])), '')
        op = "copy sources=%s dest=%s" % (args, options.dest_path)
    elif options.rcopy:
        if not options.dest_path:
            options.dest_path = dirname(abspath(args[0]))
        op = "rcopy sources=%s dest=%s" % (args, options.dest_path)
    else:
        op = "command=\"%s\"" % ' '.join(args)

    # print debug values (fanout value is get from the config object
    # and not task itself as set_info() is an asynchronous call.
    display.vprint(VERB_DEBUG, "clush: nodeset=%s fanout=%d [timeout " \
                   "conn=%.1f cmd=%.1f] %s" %  (nodeset_base, config.fanout,
                                                config.connect_timeout,
                                                config.command_timeout,
                                                op))
    if not task.default("USER_interactive"):
        if display.verbosity >= VERB_DEBUG and task.topology:
            print Display.COLOR_RESULT_FMT % '-' * 15
            print Display.COLOR_RESULT_FMT % task.topology,
            print Display.COLOR_RESULT_FMT % '-' * 15
        if options.copy:
            run_copy(task, args, options.dest_path, nodeset_base, timeout,
                     options.preserve_flag, display)
        elif options.rcopy:
            run_rcopy(task, args, options.dest_path, nodeset_base, timeout,
                      options.preserve_flag, display)
        else:
            run_command(task, ' '.join(args), nodeset_base, timeout, display,
                        options.remote != 'no')

    if user_interaction:
        ttyloop(task, nodeset_base, timeout, display, options.remote != 'no')
    elif task.default("USER_interactive"):
        display.vprint_err(VERB_QUIET, \
            "ERROR: interactive mode requires a tty")
        clush_exit(1, task)

    rc = 0
    if options.maxrc:
        # Instead of clush return code, return commands retcode
        rc = task.max_retcode()
        if task.num_timeout() > 0:
            rc = 255
    clush_exit(rc, task)
예제 #3
0
def main():
    """clush script entry point"""
    sys.excepthook = clush_excepthook

    #
    # Argument management
    #
    usage = "%prog [options] command"

    parser = OptionParser(usage)

    parser.add_option("-n", "--nostdin", action="store_true", dest="nostdin",
                      help="don't watch for possible input from stdin")

    parser.install_groupsconf_option()
    parser.install_clush_config_options()
    parser.install_nodes_options()
    parser.install_display_options(verbose_options=True)
    parser.install_filecopy_options()
    parser.install_connector_options()

    (options, args) = parser.parse_args()

    set_std_group_resolver_config(options.groupsconf)

    #
    # Load config file and apply overrides
    #
    config = ClushConfig(options, options.conf)

    # Initialize logging
    if config.verbosity >= VERB_DEBUG:
        logging.basicConfig(level=logging.DEBUG)
        logging.debug("clush: STARTING DEBUG")
    else:
        logging.basicConfig(level=logging.CRITICAL)

    # Should we use ANSI colors for nodes?
    if config.color == "auto":
        color = sys.stdout.isatty() and (options.gatherall or \
                                         sys.stderr.isatty())
    else:
        color = config.color == "always"

    try:
        # Create and configure display object.
        display = Display(options, config, color)
    except ValueError as exc:
        parser.error("option mismatch (%s)" % exc)

    if options.groupsource:
        # Be sure -a/g -s source work as espected.
        std_group_resolver().default_source_name = options.groupsource

    # Compute the nodeset and warn for possible use of shell pathname
    # expansion (#225)
    wnodelist = []
    xnodelist = []
    if options.nodes:
        wnodelist = [NodeSet(nodes) for nodes in options.nodes]

    if options.exclude:
        xnodelist = [NodeSet(nodes) for nodes in options.exclude]

    for (opt, nodelist) in (('w', wnodelist), ('x', xnodelist)):
        for nodes in nodelist:
            if len(nodes) == 1 and exists(str(nodes)):
                display.vprint_err(VERB_STD, "Warning: using '-%s %s' and "
                                   "local path '%s' exists, was it expanded "
                                   "by the shell?" % (opt, nodes, nodes))

    # --hostfile support (#235)
    for opt_hostfile in options.hostfile:
        try:
            fnodeset = NodeSet()
            with open(opt_hostfile) as hostfile:
                for line in hostfile.read().splitlines():
                    fnodeset.updaten(nodes for nodes in line.split())
            display.vprint_err(VERB_DEBUG,
                               "Using nodeset %s from hostfile %s"
                               % (fnodeset, opt_hostfile))
            wnodelist.append(fnodeset)
        except IOError as exc:
            # re-raise as OSError to be properly handled
            errno, strerror = exc.args
            raise OSError(errno, strerror, exc.filename)

    # Instantiate target nodeset from command line and hostfile
    nodeset_base = NodeSet.fromlist(wnodelist)
    # Instantiate filter nodeset (command line only)
    nodeset_exclude = NodeSet.fromlist(xnodelist)

    # Specified engine prevails over default engine
    DEFAULTS.engine = options.engine

    # Do we have nodes group?
    task = task_self()
    task.set_info("debug", config.verbosity >= VERB_DEBUG)
    if config.verbosity == VERB_DEBUG:
        std_group_resolver().set_verbosity(1)
    if options.nodes_all:
        all_nodeset = NodeSet.fromall()
        display.vprint(VERB_DEBUG, "Adding nodes from option -a: %s" % \
                                   all_nodeset)
        nodeset_base.add(all_nodeset)

    if options.group:
        grp_nodeset = NodeSet.fromlist(options.group,
                                       resolver=RESOLVER_NOGROUP)
        for grp in grp_nodeset:
            addingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Adding nodes from option -g %s: %s" % (grp, addingrp))
            nodeset_base.update(addingrp)

    if options.exgroup:
        grp_nodeset = NodeSet.fromlist(options.exgroup,
                                       resolver=RESOLVER_NOGROUP)
        for grp in grp_nodeset:
            removingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Excluding nodes from option -X %s: %s" % (grp, removingrp))
            nodeset_exclude.update(removingrp)

    # Do we have an exclude list? (-x ...)
    nodeset_base.difference_update(nodeset_exclude)
    if len(nodeset_base) < 1:
        parser.error('No node to run on.')

    if options.pick and options.pick < len(nodeset_base):
        # convert to string for sample as nsiter() is slower for big
        # nodesets; and we assume options.pick will remain small-ish
        keep = random.sample(list(nodeset_base), options.pick)
        nodeset_base.intersection_update(','.join(keep))
        if config.verbosity >= VERB_VERB:
            msg = "Picked random nodes: %s" % nodeset_base
            print(Display.COLOR_RESULT_FMT % msg)

    # Set open files limit.
    set_fdlimit(config.fd_max, display)

    #
    # Task management
    #
    # check for clush interactive mode
    interactive = not len(args) and \
                  not (options.copy or options.rcopy)
    # check for foreground ttys presence (input)
    stdin_isafgtty = sys.stdin.isatty() and \
        os.tcgetpgrp(sys.stdin.fileno()) == os.getpgrp()
    # check for special condition (empty command and stdin not a tty)
    if interactive and not stdin_isafgtty:
        # looks like interactive but stdin is not a tty:
        # switch to non-interactive + disable ssh pseudo-tty
        interactive = False
        # SSH: disable pseudo-tty allocation (-T)
        ssh_options = config.ssh_options or ''
        ssh_options += ' -T'
        config._set_main("ssh_options", ssh_options)
    if options.nostdin and interactive:
        parser.error("illegal option `--nostdin' in that case")

    # Force user_interaction if Clush._f_user_interaction for test purposes
    user_interaction = hasattr(sys.modules[__name__], '_f_user_interaction')
    if not options.nostdin:
        # Try user interaction: check for foreground ttys presence (ouput)
        stdout_isafgtty = sys.stdout.isatty() and \
            os.tcgetpgrp(sys.stdout.fileno()) == os.getpgrp()
        user_interaction |= stdin_isafgtty and stdout_isafgtty
    display.vprint(VERB_DEBUG, "User interaction: %s" % user_interaction)
    if user_interaction:
        # Standard input is a terminal and we want to perform some user
        # interactions in the main thread (using blocking calls), so
        # we run cluster commands in a new ClusterShell Task (a new
        # thread is created).
        task = Task()
    # else: perform everything in the main thread

    # Handle special signal only when user_interaction is set
    task.set_default("USER_handle_SIGUSR1", user_interaction)

    task.excepthook = sys.excepthook
    task.set_default("USER_stdin_worker", not (sys.stdin.isatty() or \
                                               options.nostdin or \
                                               user_interaction))
    display.vprint(VERB_DEBUG, "Create STDIN worker: %s" % \
                               task.default("USER_stdin_worker"))

    task.set_info("debug", config.verbosity >= VERB_DEBUG)
    task.set_info("fanout", config.fanout)

    if options.worker:
        try:
            if options.remote == 'no':
                task.set_default('local_worker',
                                 _load_workerclass(options.worker))
            else:
                task.set_default('distant_worker',
                                 _load_workerclass(options.worker))
        except (ImportError, AttributeError):
            msg = "ERROR: Could not load worker '%s'" % options.worker
            display.vprint_err(VERB_QUIET, msg)
            clush_exit(1, task)

    if options.topofile or task._default_tree_is_enabled():
        if options.topofile:
            task.load_topology(options.topofile)
        if config.verbosity >= VERB_VERB:
            roots = len(task.topology.root.nodeset)
            gws = task.topology.inner_node_count() - roots
            msg = "enabling tree topology (%d gateways)" % gws
            print("clush: %s" % msg, file=sys.stderr)

    if options.grooming_delay:
        if config.verbosity >= VERB_VERB:
            msg = Display.COLOR_RESULT_FMT % ("Grooming delay: %f" %
                                              options.grooming_delay)
            print(msg, file=sys.stderr)
        task.set_info("grooming_delay", options.grooming_delay)
    elif options.rcopy:
        # By default, --rcopy should inhibit grooming
        task.set_info("grooming_delay", 0)

    if config.ssh_user:
        task.set_info("ssh_user", config.ssh_user)
    if config.ssh_path:
        task.set_info("ssh_path", config.ssh_path)
    if config.ssh_options:
        task.set_info("ssh_options", config.ssh_options)
    if config.scp_path:
        task.set_info("scp_path", config.scp_path)
    if config.scp_options:
        task.set_info("scp_options", config.scp_options)
    if config.rsh_path:
        task.set_info("rsh_path", config.rsh_path)
    if config.rcp_path:
        task.set_info("rcp_path", config.rcp_path)
    if config.rsh_options:
        task.set_info("rsh_options", config.rsh_options)

    # Set detailed timeout values
    task.set_info("connect_timeout", config.connect_timeout)
    task.set_info("command_timeout", config.command_timeout)

    # Enable stdout/stderr separation
    task.set_default("stderr", not options.gatherall)

    # Prevent reading from stdin?
    task.set_default("stdin", not options.nostdin)

    # Disable MsgTree buffering if not gathering outputs
    task.set_default("stdout_msgtree", display.gather or display.line_mode)

    # Always disable stderr MsgTree buffering
    task.set_default("stderr_msgtree", False)

    # Set timeout at worker level when command_timeout is defined.
    if config.command_timeout > 0:
        timeout = config.command_timeout
    else:
        timeout = -1

    # Configure task custom status
    task.set_default("USER_interactive", interactive)
    task.set_default("USER_running", False)

    if (options.copy or options.rcopy) and not args:
        parser.error("--[r]copy option requires at least one argument")
    if options.copy:
        if not options.dest_path:
            # append '/' to clearly indicate a directory for tree mode
            options.dest_path = join(dirname(abspath(args[0])), '')
        op = "copy sources=%s dest=%s" % (args, options.dest_path)
    elif options.rcopy:
        if not options.dest_path:
            options.dest_path = dirname(abspath(args[0]))
        op = "rcopy sources=%s dest=%s" % (args, options.dest_path)
    else:
        op = "command=\"%s\"" % ' '.join(args)

    # print debug values (fanout value is get from the config object
    # and not task itself as set_info() is an asynchronous call.
    display.vprint(VERB_DEBUG, "clush: nodeset=%s fanout=%d [timeout " \
                   "conn=%.1f cmd=%.1f] %s" %  (nodeset_base, config.fanout,
                                                config.connect_timeout,
                                                config.command_timeout,
                                                op))
    if not task.default("USER_interactive"):
        if display.verbosity >= VERB_DEBUG and task.topology:
            print(Display.COLOR_RESULT_FMT % '-' * 15)
            print(Display.COLOR_RESULT_FMT % task.topology, end='')
            print(Display.COLOR_RESULT_FMT % '-' * 15)
        if options.copy:
            run_copy(task, args, options.dest_path, nodeset_base, timeout,
                     options.preserve_flag, display)
        elif options.rcopy:
            run_rcopy(task, args, options.dest_path, nodeset_base, timeout,
                      options.preserve_flag, display)
        else:
            run_command(task, ' '.join(args), nodeset_base, timeout, display,
                        options.remote != 'no')

    if user_interaction:
        ttyloop(task, nodeset_base, timeout, display, options.remote != 'no')
    elif task.default("USER_interactive"):
        display.vprint_err(VERB_QUIET, \
            "ERROR: interactive mode requires a tty")
        clush_exit(1, task)

    rc = 0
    if options.maxrc:
        # Instead of clush return code, return commands retcode
        rc = task.max_retcode()
        if task.num_timeout() > 0:
            rc = 255
    clush_exit(rc, task)
예제 #4
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                                                op))
    if not task.default("USER_interactive"):
        if options.copy:
            run_copy(task, args, options.dest_path, nodeset_base, timeout,
                     options.preserve_flag, display)
        elif options.rcopy:
            run_rcopy(task, args, options.dest_path, nodeset_base, timeout,
                      options.preserve_flag, display)
        else:
            run_command(task, ' '.join(args), nodeset_base, timeout, display,
                        options.remote != 'no')

    if user_interaction:
        ttyloop(task, nodeset_base, timeout, display, options.remote != 'no')
    elif task.default("USER_interactive"):
        display.vprint_err(VERB_QUIET, \
            "ERROR: interactive mode requires a tty")
        clush_exit(1, task)

    rc = 0
    if options.maxrc:
        # Instead of clush return code, return commands retcode
        rc = task.max_retcode()
        if task.num_timeout() > 0:
            rc = 255
    clush_exit(rc, task)


if __name__ == '__main__':
    main()
예제 #5
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def main(args=sys.argv):
    """clush script entry point"""
    sys.excepthook = clush_excepthook

    # Default values
    nodeset_base, nodeset_exclude = NodeSet(), NodeSet()

    #
    # Argument management
    #
    usage = "%prog [options] command"

    parser = OptionParser(usage)

    parser.add_option("--nostdin", action="store_true", dest="nostdin",
                      help="don't watch for possible input from stdin")

    parser.install_nodes_options()
    parser.install_display_options(verbose_options=True)
    parser.install_filecopy_options()
    parser.install_ssh_options()

    (options, args) = parser.parse_args(args[1:])

    #
    # Load config file and apply overrides
    #
    config = ClushConfig(options)

    # Should we use ANSI colors for nodes?
    if config.color == "auto":
        color = sys.stdout.isatty() and (options.gatherall or \
                                         sys.stderr.isatty())
    else:
        color = config.color == "always"

    # Create and configure display object.
    display = Display(options, config, color)

    #
    # Compute the nodeset
    #
    if options.nodes:
        nodeset_base = NodeSet.fromlist(options.nodes)
    if options.exclude:
        nodeset_exclude = NodeSet.fromlist(options.exclude)

    if options.groupsource:
        # Be sure -a/g -s source work as espected.
        STD_GROUP_RESOLVER.default_sourcename = options.groupsource

    # FIXME: add public API to enforce engine
    Task._std_default['engine'] = options.engine

    # Do we have nodes group?
    task = task_self()
    task.set_info("debug", config.verbosity > 1)
    if config.verbosity == VERB_DEBUG:
        STD_GROUP_RESOLVER.set_verbosity(1)
    if options.nodes_all:
        all_nodeset = NodeSet.fromall()
        display.vprint(VERB_DEBUG, "Adding nodes from option -a: %s" % \
                                   all_nodeset)
        nodeset_base.add(all_nodeset)

    if options.group:
        grp_nodeset = NodeSet.fromlist(options.group,
                                       resolver=NOGROUP_RESOLVER)
        for grp in grp_nodeset:
            addingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Adding nodes from option -g %s: %s" % (grp, addingrp))
            nodeset_base.update(addingrp)

    if options.exgroup:
        grp_nodeset = NodeSet.fromlist(options.exgroup,
                                       resolver=NOGROUP_RESOLVER)
        for grp in grp_nodeset:
            removingrp = NodeSet("@" + grp)
            display.vprint(VERB_DEBUG, \
                "Excluding nodes from option -X %s: %s" % (grp, removingrp))
            nodeset_exclude.update(removingrp)

    # Do we have an exclude list? (-x ...)
    nodeset_base.difference_update(nodeset_exclude)
    if len(nodeset_base) < 1:
        parser.error('No node to run on.')

    # Set open files limit.
    set_fdlimit(config.fd_max, display)

    #
    # Task management
    #
    # check for clush interactive mode
    interactive = not len(args) and \
                  not (options.copy or options.rcopy)
    # check for foreground ttys presence (input)
    stdin_isafgtty = sys.stdin.isatty() and \
        os.tcgetpgrp(sys.stdin.fileno()) == os.getpgrp()
    # check for special condition (empty command and stdin not a tty)
    if interactive and not stdin_isafgtty:
        # looks like interactive but stdin is not a tty:
        # switch to non-interactive + disable ssh pseudo-tty
        interactive = False
        # SSH: disable pseudo-tty allocation (-T)
        ssh_options = config.ssh_options or ''
        ssh_options += ' -T'
        config._set_main("ssh_options", ssh_options)
    if options.nostdin and interactive:
        parser.error("illegal option `--nostdin' in that case")

    user_interaction = False
    if not options.nostdin:
        # Try user interaction: check for foreground ttys presence (ouput)
        stdout_isafgtty = sys.stdout.isatty() and \
            os.tcgetpgrp(sys.stdout.fileno()) == os.getpgrp()
        user_interaction = stdin_isafgtty and stdout_isafgtty
    display.vprint(VERB_DEBUG, "User interaction: %s" % user_interaction)
    if user_interaction:
        # Standard input is a terminal and we want to perform some user
        # interactions in the main thread (using blocking calls), so
        # we run cluster commands in a new ClusterShell Task (a new
        # thread is created).
        task = Task()
    # else: perform everything in the main thread

    # Handle special signal only when user_interaction is set
    task.set_default("USER_handle_SIGUSR1", user_interaction)

    task.excepthook = sys.excepthook
    task.set_default("USER_stdin_worker", not (sys.stdin.isatty() or \
                                               options.nostdin))
    display.vprint(VERB_DEBUG, "Create STDIN worker: %s" % \
                               task.default("USER_stdin_worker"))

    task.set_info("debug", config.verbosity >= VERB_DEBUG)
    task.set_info("fanout", config.fanout)

    if config.ssh_user:
        task.set_info("ssh_user", config.ssh_user)
    if config.ssh_path:
        task.set_info("ssh_path", config.ssh_path)
    if config.ssh_options:
        task.set_info("ssh_options", config.ssh_options)

    # Set detailed timeout values
    task.set_info("connect_timeout", config.connect_timeout)
    command_timeout = config.command_timeout
    task.set_info("command_timeout", command_timeout)

    # Enable stdout/stderr separation
    task.set_default("stderr", not options.gatherall)

    # Disable MsgTree buffering if not gathering outputs
    task.set_default("stdout_msgtree", display.gather or display.line_mode)
    # Always disable stderr MsgTree buffering
    task.set_default("stderr_msgtree", False)

    # Set timeout at worker level when command_timeout is defined.
    if command_timeout > 0:
        timeout = command_timeout
    else:
        timeout = -1

    # Configure task custom status
    task.set_default("USER_interactive", interactive)
    task.set_default("USER_running", False)

    if (options.copy or options.rcopy) and not args:
        parser.error("--[r]copy option requires at least one argument")
    if options.copy:
        if not options.dest_path:
            options.dest_path = os.path.dirname(args[0])
        op = "copy sources=%s dest=%s" % (args, options.dest_path)
    elif options.rcopy:
        if not options.dest_path:
            options.dest_path = os.path.dirname(args[0])
        op = "rcopy sources=%s dest=%s" % (args, options.dest_path)
    else:
        op = "command=\"%s\"" % ' '.join(args)

    # print debug values (fanout value is get from the config object
    # and not task itself as set_info() is an asynchronous call.
    display.vprint(VERB_DEBUG, "clush: nodeset=%s fanout=%d [timeout " \
                   "conn=%.1f cmd=%.1f] %s" %  (nodeset_base, config.fanout,
                                                task.info("connect_timeout"),
                                                task.info("command_timeout"),
                                                op))
    if not task.default("USER_interactive"):
        if options.copy:
            run_copy(task, args, options.dest_path, nodeset_base, 0,
                     options.preserve_flag, display)
        elif options.rcopy:
            run_rcopy(task, args, options.dest_path, nodeset_base, 0,
                      options.preserve_flag, display)
        else:
            run_command(task, ' '.join(args), nodeset_base, timeout, display)

    if user_interaction:
        ttyloop(task, nodeset_base, timeout, display)
    elif task.default("USER_interactive"):
        display.vprint_err(VERB_QUIET, \
            "ERROR: interactive mode requires a tty")
        clush_exit(1)

    rc = 0
    if options.maxrc:
        # Instead of clush return code, return commands retcode
        rc = task.max_retcode()
        if task.num_timeout() > 0:
            rc = 255
    clush_exit(rc)