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Diffstat (limited to 'planetlab/pssh/bin/pslurp')
| -rwxr-xr-x | planetlab/pssh/bin/pslurp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/planetlab/pssh/bin/pslurp b/planetlab/pssh/bin/pslurp new file mode 100755 index 0000000..5797e7c --- /dev/null +++ b/planetlab/pssh/bin/pslurp @@ -0,0 +1,129 @@ +#!/usr/bin/env python +# -*- Mode: python -*- + +# Copyright (c) 2009, Andrew McNabb +# Copyright (c) 2003-2008, Brent N. Chun + +"""Parallel scp from the set of nodes in hosts.txt. + +For each node, we essentially do a scp [-r] user@host:remote +outdir/<node>/local. This program also uses the -q (quiet) and -C +(compression) options. Note that remote must be an absolute path. +""" + +import os +import re +import sys + +parent, bindir = os.path.split(os.path.dirname(os.path.abspath(sys.argv[0]))) +if os.path.exists(os.path.join(parent, 'psshlib')): + sys.path.insert(0, parent) + +from psshlib import psshutil +from psshlib.task import Task +from psshlib.manager import Manager, FatalError +from psshlib.cli import common_parser, common_defaults + +def option_parser(): + parser = common_parser() + parser.usage = "%prog [OPTIONS] -h hosts.txt remote local" + parser.epilog = ("Example: pslurp -h hosts.txt -L /tmp/outdir -l irb2 " + + " /home/irb2/foo.txt foo.txt") + + parser.add_option('-r', '--recursive', dest='recursive', + action='store_true', help='recusively copy directories (OPTIONAL)') + parser.add_option('-L', '--localdir', dest='localdir', + help='output directory for remote file copies') + + return parser + +def parse_args(): + parser = option_parser() + defaults = common_defaults() + parser.set_defaults(**defaults) + opts, args = parser.parse_args() + + if len(args) < 1: + parser.error('Paths not specified.') + + if len(args) < 2: + parser.error('Local path not specified.') + + if len(args) > 2: + parser.error('Extra arguments given after the local path.') + + if not opts.host_files and not opts.host_strings: + parser.error('Hosts not specified.') + + return opts, args + +def do_pslurp(hosts, remote, local, opts): + if opts.localdir and not os.path.exists(opts.localdir): + os.makedirs(opts.localdir) + if opts.outdir and not os.path.exists(opts.outdir): + os.makedirs(opts.outdir) + if opts.errdir and not os.path.exists(opts.errdir): + os.makedirs(opts.errdir) + for host, port, user in hosts: + if opts.localdir: + dirname = "%s/%s" % (opts.localdir, host) + else: + dirname = host + if not os.path.exists(dirname): + os.mkdir(dirname) + manager = Manager(opts) + for host, port, user in hosts: + if opts.localdir: + localpath = "%s/%s/%s" % (opts.localdir, host, local) + else: + localpath = "%s/%s" % (host, local) + cmd = ['scp', '-qC'] + if opts.options: + for opt in opts.options: + cmd += ['-o', opt] + if port: + cmd += ['-P', port] + if opts.recursive: + cmd.append('-r') + if opts.extra: + cmd.extend(opts.extra) + if user: + cmd.append('%s@%s:%s' % (user, host, remote)) + else: + cmd.append('%s:%s' % (host, remote)) + cmd.append(localpath) + t = Task(host, port, user, cmd, opts) + manager.add_task(t) + try: + statuses = manager.run() + except FatalError: + sys.exit(1) + + if min(statuses) < 0: + # At least one process was killed. + sys.exit(3) + for status in statuses: + if status == 255: + sys.exit(4) + for status in statuses: + if status != 0: + sys.exit(5) + +if __name__ == "__main__": + opts, args = parse_args() + remote = args[0] + local = args[1] + if not re.match("^/", remote): + print("Remote path %s must be an absolute path" % remote) + sys.exit(3) + try: + hosts = psshutil.read_host_files(opts.host_files, + default_user=opts.user) + except IOError: + _, e, _ = sys.exc_info() + sys.stderr.write('Could not open hosts file: %s\n' % e.strerror) + sys.exit(1) + if opts.host_strings: + for s in opts.host_strings: + hosts.extend(psshutil.parse_host_string(s, default_user=opts.user)) + do_pslurp(hosts, remote, local, opts) |
