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#
# Copyright (C) 2010-2012 CEA/DAM
# Copyright (C) 2017-2018 Stephane Thiell <sthiell@stanford.edu>
#
# This file is part of ClusterShell.
#
# ClusterShell is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# ClusterShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with ClusterShell; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""
format dsh/pdsh-like output for humans and more
For help, type::
$ clubak --help
"""
from __future__ import print_function
import sys
from ClusterShell.MsgTree import MsgTree, MODE_DEFER, MODE_TRACE
from ClusterShell.NodeSet import NodeSet, NodeSetParseError, std_group_resolver
from ClusterShell.NodeSet import set_std_group_resolver_config
from ClusterShell.CLI.Display import Display, THREE_CHOICES
from ClusterShell.CLI.Display import sys_stdin
from ClusterShell.CLI.Error import GENERIC_ERRORS, handle_generic_error
from ClusterShell.CLI.OptionParser import OptionParser
from ClusterShell.CLI.Utils import nodeset_cmpkey
def display_tree(tree, disp, out):
"""display sub-routine for clubak -T (msgtree trace mode)"""
togh = True
offset = 2
reldepth = -offset
reldepths = {}
line_mode = disp.line_mode
for msgline, keys, depth, nchildren in tree.walk_trace():
if togh:
if depth in reldepths:
reldepth = reldepths[depth]
else:
reldepth = reldepths[depth] = reldepth + offset
nodeset = NodeSet.fromlist(keys)
if line_mode:
out.write(str(nodeset) + ':\n')
else:
out.write(disp.format_header(nodeset, reldepth))
out.write(' ' * reldepth + bytes(msgline).decode(errors='replace')
+ '\n')
togh = nchildren != 1
def display(tree, disp, gather, trace_mode, enable_nodeset_key):
"""nicely display MsgTree instance `tree' content according to
`disp' Display object and `gather' boolean flag"""
if trace_mode:
display_tree(tree, disp, sys.stdout)
sys.stdout.flush()
return
if gather:
if enable_nodeset_key:
# lambda to create a NodeSet from keys returned by walk()
ns_getter = lambda x: NodeSet.fromlist(x[1])
for nodeset in sorted((ns_getter(item) for item in tree.walk()),
key=nodeset_cmpkey):
disp.print_gather(nodeset, tree[nodeset[0]])
else:
for msg, key in tree.walk():
disp.print_gather_keys(key, msg)
else:
if enable_nodeset_key:
# nodes are automagically sorted by NodeSet
for node in NodeSet.fromlist(tree.keys()).nsiter():
disp.print_gather(node, tree[str(node)])
else:
for key in tree.keys():
disp.print_gather_keys([ key ], tree[key])
def clubak():
"""script subroutine"""
# Argument management
parser = OptionParser("%prog [options]")
parser.install_groupsconf_option()
parser.install_display_options(verbose_options=True,
separator_option=True,
dshbak_compat=True,
msgtree_mode=True)
options = parser.parse_args()[0]
set_std_group_resolver_config(options.groupsconf)
if options.interpret_keys == THREE_CHOICES[-1]: # auto?
enable_nodeset_key = None # AUTO
else:
enable_nodeset_key = (options.interpret_keys == THREE_CHOICES[2])
# Create new message tree
if options.trace_mode:
tree_mode = MODE_TRACE
else:
tree_mode = MODE_DEFER
tree = MsgTree(mode=tree_mode)
fast_mode = options.fast_mode
if fast_mode:
if tree_mode != MODE_DEFER or options.line_mode:
parser.error("incompatible tree options")
preload_msgs = {}
separator = options.separator.encode()
# Feed the tree from standard input lines
for line in sys_stdin():
try:
linestripped = line.rstrip(b'\r\n')
if options.verbose or options.debug:
sys.stdout.write('INPUT ' +
linestripped.decode(errors='replace') + '\n')
key, content = linestripped.split(separator, 1)
# NodeSet requires encoded string
key = key.strip().decode(errors='replace')
if not key:
raise ValueError("no node found")
if enable_nodeset_key is False: # interpret-keys=never?
keyset = [ key ]
else:
try:
keyset = NodeSet(key)
except NodeSetParseError:
if enable_nodeset_key: # interpret-keys=always?
raise
enable_nodeset_key = False # auto => switch off
keyset = [ key ]
if fast_mode:
for node in keyset:
preload_msgs.setdefault(node, []).append(content)
else:
for node in keyset:
tree.add(node, content)
except ValueError as ex:
raise ValueError('%s: "%s"' %
(ex, linestripped.decode(errors='replace')))
if fast_mode:
# Messages per node have been aggregated, now add to tree one
# full msg per node
for key, wholemsg in preload_msgs.items():
tree.add(key, b'\n'.join(wholemsg))
# Display results
try:
disp = Display(options)
except ValueError as exc:
parser.error("option mismatch (%s)" % exc)
return
if options.debug:
std_group_resolver().set_verbosity(1)
print("clubak: line_mode=%s gather=%s tree_depth=%d"
% (bool(options.line_mode), bool(disp.gather), tree._depth()),
file=sys.stderr)
display(tree, disp, disp.gather or disp.regroup, \
options.trace_mode, enable_nodeset_key is not False)
def main():
"""main script function"""
try:
clubak()
except GENERIC_ERRORS as ex:
sys.exit(handle_generic_error(ex))
except ValueError as ex:
print("%s:" % sys.argv[0], ex, file=sys.stderr)
sys.exit(1)
sys.exit(0)
if __name__ == '__main__':
main()
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