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#
# A library to manage ARCFIRE experiments
#
# Copyright (C) 2017-2018 Nextworks S.r.l.
# Copyright (C) 2017-2018 imec
#
# Sander Vrijders <sander.vrijders@ugent.be>
# Dimitri Staessens <dimitri.staessens@ugent.be>
# Vincenzo Maffione <v.maffione@nextworks.it>
# Marco Capitani <m.capitani@nextworks.it>
#
# This library 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.
#
# This library 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 this library; if not, write to the Free Software
# Foundation, Inc., http://www.fsf.org/about/contact/.
#
from rumba import model as mod
import tempfile
import tarfile
import os
from rumba import log
logger = log.get_logger(__name__)
class DockerException(Exception):
pass
class DockerExecutor(mod.Executor):
def __init__(self, testbed):
self.testbed = testbed
self.running_containers = testbed.running_containers
def execute_command(self, node, command, sudo=False, time_out=3):
logger.debug("%s >> %s" % (node.name, command))
c, o = self.running_containers[node.name].exec_run(["sh", "-c",
command])
if c:
raise DockerException('A remote command returned an error. '
'Output:\n\n\t' + o.decode("utf-8"))
return o.decode("utf-8")
def fetch_file(self, node, path, destination, as_root=False):
if not path.startswith("/"):
workingdir = self.running_containers[node.name].attrs["Config"][
"WorkingDir"]
path = os.path.join(workingdir, path)
try:
with tempfile.NamedTemporaryFile() as tmp:
archive, _ = self.running_containers[node.name].get_archive(
path)
for c in archive:
tmp.write(c)
tmp.seek(0)
tarball = tarfile.TarFile(fileobj=tmp, mode='r')
tarball.extract(os.path.basename(path), destination)
except:
logger.error("Error when extracting %s" % path)
def copy_file(self, node, path, destination):
pass
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