diff options
Diffstat (limited to 'resources/libraries/python')
| -rw-r--r-- | resources/libraries/python/SFC/SFCConstants.py | 43 | ||||
| -rw-r--r-- | resources/libraries/python/SFC/SFCTest.py | 93 | ||||
| -rw-r--r-- | resources/libraries/python/SFC/SetupSFCTest.py | 226 | ||||
| -rw-r--r-- | resources/libraries/python/SFC/TunnelProtocol.py | 41 | ||||
| -rw-r--r-- | resources/libraries/python/SFC/VerifyPacket.py | 223 | ||||
| -rw-r--r-- | resources/libraries/python/SFC/__init__.py | 16 |
6 files changed, 642 insertions, 0 deletions
diff --git a/resources/libraries/python/SFC/SFCConstants.py b/resources/libraries/python/SFC/SFCConstants.py new file mode 100644 index 0000000000..33391a1771 --- /dev/null +++ b/resources/libraries/python/SFC/SFCConstants.py @@ -0,0 +1,43 @@ +#!/usr/bin/env python +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +This module define some constants. +""" + +class SFCConstants(object): + """ + Define some constants for the test filed verify. + """ + + DEF_SRC_PORT = 1234 + DEF_DST_PORT = 5678 + UDP_PROTOCOL = 17 + VxLAN_UDP_PORT = 4789 + VxLANGPE_UDP_PORT = 4790 + VxLAN_FLAGS = 0x8 + VxLAN_DEFAULT_VNI = 1 + VxLANGPE_FLAGS = 0xc + VxLANGPE_NEXT_PROTOCOL = 0x4 + VxLANGPE_DEFAULT_VNI = 9 + NSH_FLAGS = 0x0 + NSH_HEADER_LENGTH = 0x6 + NSH_DEFAULT_MDTYPE = 0x1 + NSH_NEXT_PROTOCOL = 0x3 + NSH_DEFAULT_NSP = 185 + NSH_DEFAULT_NSI = 255 + NSH_DEFAULT_C1 = 3232248395 + NSH_DEFAULT_C2 = 9 + NSH_DEFAULT_C3 = 3232248392 + NSH_DEFAULT_C4 = 50336437 diff --git a/resources/libraries/python/SFC/SFCTest.py b/resources/libraries/python/SFC/SFCTest.py new file mode 100644 index 0000000000..456457f9f6 --- /dev/null +++ b/resources/libraries/python/SFC/SFCTest.py @@ -0,0 +1,93 @@ +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +This module implements functionality which configure and start +the NSH SFC functional test. +""" + +from resources.libraries.python.ssh import SSH +from resources.libraries.python.constants import Constants as con +from resources.libraries.python.topology import Topology + +class SFCTest(object): + """Configure and Start the NSH SFC functional tests.""" + + @staticmethod + def config_and_start_SFC_test(dut_node, dut_port, adj_mac, testtype): + """ + Start the SFC functional on the dut_node. + + :param dut_node: Will execute the SFC on this node. + :param dut_port: The ingress interface on the DUT. + :param adj_mac: The adjacency interface MAC. + :param testtype: The SFC functional test type. + (Classifier, Proxy Inbound, Proxy Outbound, SFF). + :type dut_node: dict + :type dut_port: str + :type adj_mac: str + :type testtype: str + :returns: none + :raises RuntimeError: If the script execute fails. + """ + + vpp_intf_name = Topology.get_interface_name(dut_node, dut_port) + + ssh = SSH() + ssh.connect(dut_node) + + if testtype == "Classifier": + exec_shell = "set_sfc_classifier.sh" + elif testtype == "Proxy Inbound": + exec_shell = "set_nsh_proxy_inbound.sh" + elif testtype == "Proxy Outbound": + exec_shell = "set_nsh_proxy_outbound.sh" + else: + exec_shell = "set_sfc_sff.sh" + + cmd = 'cd {0}/nsh_sfc_tests/sfc_scripts/ && sudo ./{1} {2} ' \ + '{3} {4}'.format(con.REMOTE_FW_DIR, exec_shell, vpp_intf_name, + adj_mac, dut_port) + + (ret_code, _, _) = ssh.exec_command(cmd, timeout=600) + if ret_code != 0: + raise RuntimeError('Failed to execute SFC setup script ' \ + '{0} at node {1}'.format(exec_shell, dut_node['host'])) + + @staticmethod + def start_the_tcpdump_on_the_node(from_node, from_port, filter_ip): + """ + Start the tcpdump on the frome_node. + + :param from_node: Will execute the tcpdump on this node. + :param from_port: Will capture the packets on this interface. + :param filter_ip: filter the dest ip. + :type from_node: dict + :type from_port: str + :type filter_ip: str + :returns: none + :raises RuntimeError: If the script "start_tcpdump.sh" fails. + """ + + interface_name = Topology.get_interface_name(from_node, from_port) + + ssh = SSH() + ssh.connect(from_node) + + cmd = 'cd {0}/nsh_sfc_tests/sfc_scripts/ && sudo ./start_tcpdump.sh ' \ + '{1} {2}'.format(con.REMOTE_FW_DIR, interface_name, filter_ip) + + (ret_code, _, _) = ssh.exec_command(cmd, timeout=600) + if ret_code != 0: + raise RuntimeError('Failed to exec start_tcpdump.sh at node {0}'. + format(from_node['host'])) diff --git a/resources/libraries/python/SFC/SetupSFCTest.py b/resources/libraries/python/SFC/SetupSFCTest.py new file mode 100644 index 0000000000..d481202837 --- /dev/null +++ b/resources/libraries/python/SFC/SetupSFCTest.py @@ -0,0 +1,226 @@ +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""This module exists to provide setup utilities for the framework on topology +nodes. All tasks required to be run before the actual tests are started is +supposed to end up here. +""" + +from shlex import split +from subprocess import Popen, PIPE, call +from multiprocessing import Pool +from tempfile import NamedTemporaryFile +from os.path import basename + +from robot.api import logger +from robot.libraries.BuiltIn import BuiltIn + +from resources.libraries.python.ssh import SSH +from resources.libraries.python.constants import Constants as con +from resources.libraries.python.topology import NodeType +from resources.libraries.python.topology import Topology + +__all__ = ["SetupSFCTest"] + + +def pack_framework_dir(): + """Pack the testing WS into temp file, return its name. + + :returns: the temporary package file name. + :rtype: str + :raises: If execute the tar command failed. + """ + + tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="SFC-testing-") + file_name = tmpfile.name + tmpfile.close() + + proc = Popen( + split("tar --exclude-vcs --exclude=./tmp -zcf {0} .".format(file_name)), + stdout=PIPE, stderr=PIPE) + (stdout, stderr) = proc.communicate() + + logger.debug(stdout) + logger.debug(stderr) + + return_code = proc.wait() + if return_code != 0: + raise RuntimeError("Could not pack testing framework.") + + return file_name + + +def copy_tarball_to_node(tarball, node): + """Copy tarball file from local host to remote node. + + :param tarball: Path to tarball to upload. + :param node: Node in the topology where the tarball will be copied to. + :type tarball: str + :type node: dict + :returns: nothing + """ + logger.console('Copying tarball to {0}'.format(node['host'])) + ssh = SSH() + ssh.connect(node) + + ssh.scp(tarball, "/tmp/") + + +def extract_tarball_at_node(tarball, node): + """Extract tarball at given node. + + Extracts tarball using tar on given node to specific CSIT loocation. + + :param tarball: Path to tarball to upload. + :param node: Dictionary created from topology. + :type tarball: str + :type node: dict + :returns: nothing + :raises: If unpack the file failed. + """ + logger.console('Extracting tarball to {0} on {1}'.format( + con.REMOTE_FW_DIR, node['host'])) + ssh = SSH() + ssh.connect(node) + + cmd = 'sudo rm -rf {1}; mkdir {1} ; tar -zxf {0} -C {1}; ' \ + 'rm -f {0}'.format(tarball, con.REMOTE_FW_DIR) + (ret_code, _, stderr) = ssh.exec_command(cmd, timeout=30) + if ret_code != 0: + logger.error('Unpack error: {0}'.format(stderr)) + raise RuntimeError('Failed to unpack {0} at node {1}'.format( + tarball, node['host'])) + + +def create_env_directory_at_node(node): + """Create fresh virtualenv to a directory, install pip requirements. + + :param node: Dictionary created from topology, will only install in the TG + :type node: dict + :returns: nothing + """ + logger.console('Extracting virtualenv, installing requirements.txt ' + 'on {0}'.format(node['host'])) + ssh = SSH() + ssh.connect(node) + (ret_code, stdout, stderr) = ssh.exec_command( + 'cd {0} && rm -rf env && ' + 'virtualenv --system-site-packages --never-download env && ' + '. env/bin/activate && pip install -r requirements.txt' + .format(con.REMOTE_FW_DIR), timeout=100) + if ret_code != 0: + logger.error('Virtualenv creation error: {0}'.format(stdout + stderr)) + raise RuntimeError('Virtualenv setup failed') + else: + logger.console('Virtualenv created on {0}'.format(node['host'])) + +def install_sfc_test(node): + """Prepare the NSH SFC test envrionment. + + :param node: Dictionary created from topology + :type node: dict + :returns: nothing + """ + logger.console('Install the NSH SFC on {0}'.format(node['host'])) + + if_name_list = Topology.get_node_interfaces(node) + + ssh = SSH() + ssh.connect(node) + + (ret_code, _, stderr) = ssh.exec_command( + 'cd {0}/nsh_sfc_tests/sfc_scripts/ && ./install_sfc.sh {1} {2}' + .format(con.REMOTE_FW_DIR, if_name_list[0], if_name_list[1]), \ + timeout=600) + + if ret_code != 0: + logger.error('Install the NSH SFC error: {0}'.format(stderr)) + raise RuntimeError('Install the NSH SFC failed') + else: + logger.console('Install the NSH SFC on {0} success!'. + format(node['host'])) + +def setup_node(args): + """Run all set-up methods for a node. + + This method is used as map_async parameter. It receives tuple with all + parameters as passed to map_async function. + + :param args: All parameters needed to setup one node. + :type args: tuple + :returns: True - success, False - error + :rtype: bool + """ + tarball, remote_tarball, node = args + try: + copy_tarball_to_node(tarball, node) + extract_tarball_at_node(remote_tarball, node) + if node['type'] == NodeType.DUT: + install_sfc_test(node) + if node['type'] == NodeType.TG: + create_env_directory_at_node(node) + except RuntimeError as exc: + logger.error("Node setup failed, error:'{0}'".format(exc.message)) + return False + else: + logger.console('Setup of node {0} done'.format(node['host'])) + return True + +def delete_local_tarball(tarball): + """Delete local tarball to prevent disk pollution. + + :param tarball: Path to tarball to upload. + :type tarball: str + :returns: nothing + """ + call(split('sh -c "rm {0} > /dev/null 2>&1"'.format(tarball))) + + +class SetupSFCTest(object): + """Setup suite run on topology nodes. + + Many VAT/CLI based tests need the scripts at remote hosts before executing + them. This class packs the whole testing directory and copies it over + to all nodes in topology under /tmp/ + """ + + @staticmethod + def setup_nsh_sfc_test(nodes): + """Pack the whole directory and extract in temp on each node.""" + + tarball = pack_framework_dir() + msg = 'Framework packed to {0}'.format(tarball) + logger.console(msg) + logger.trace(msg) + remote_tarball = "/tmp/{0}".format(basename(tarball)) + + # Turn off logging since we use multiprocessing + log_level = BuiltIn().set_log_level('NONE') + params = ((tarball, remote_tarball, node) for node in nodes.values()) + pool = Pool(processes=len(nodes)) + result = pool.map_async(setup_node, params) + pool.close() + pool.join() + + # Turn on logging + BuiltIn().set_log_level(log_level) + + logger.info( + 'Executed node setups in parallel, waiting for processes to end') + result.wait() + + logger.info('Results: {0}'.format(result.get())) + + logger.trace('Test framework copied to all topology nodes') + delete_local_tarball(tarball) + logger.console('All nodes are ready') diff --git a/resources/libraries/python/SFC/TunnelProtocol.py b/resources/libraries/python/SFC/TunnelProtocol.py new file mode 100644 index 0000000000..4b4377c895 --- /dev/null +++ b/resources/libraries/python/SFC/TunnelProtocol.py @@ -0,0 +1,41 @@ +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +This module implements the VxLAN/VXLAN-GPE/NSH protocol +for the packet analyse. +""" +from scapy.all import Packet +from scapy.all import XByteField, ShortField +from scapy.all import BitField, XBitField, IntField + +class VxLAN(Packet): + """Define the vxlan protocol for the packet analysis.""" + name = "vxlan" + fields_desc = [XByteField("flags", 0x08), BitField("reserved", 0, 24), + BitField("vni", 0, 24), XByteField("reserved", 0x00)] + +class VxLANGPE(Packet): + """Define the vxlan-gpe protocol for the packet analysis.""" + name = "vxlan-gpe" + fields_desc = [XByteField("flags", 0x0c), ShortField("reserved", 0), + XByteField("nextproto", 0x3), BitField("vni", 0, 24), + XByteField("reserved", 0x0)] + +class NSH(Packet): + """Define the NSH protocol for the packet analysis.""" + name = "nsh" + fields_desc = [XBitField("flags", 0x0, 10), XBitField("length", 0x6, 6), + XByteField("MDtype", 0x1), XByteField("nextproto", 0x3), + IntField("nsp_nsi", 0), IntField("c1", 0), + IntField("c2", 0), IntField("c3", 0), IntField("c4", 0)] diff --git a/resources/libraries/python/SFC/VerifyPacket.py b/resources/libraries/python/SFC/VerifyPacket.py new file mode 100644 index 0000000000..66bd09899d --- /dev/null +++ b/resources/libraries/python/SFC/VerifyPacket.py @@ -0,0 +1,223 @@ +#!/usr/bin/env python +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +This module defines the common functions. +""" + +import ipaddress + +from scapy.layers.inet import IP, UDP +from scapy.all import Raw +from scapy.utils import rdpcap +from resources.libraries.python.constants import Constants as con +from resources.libraries.python.SFC.SFCConstants import SFCConstants as sfccon +from resources.libraries.python.SFC.TunnelProtocol import VxLAN, VxLANGPE, NSH + +from robot.api import logger + +def valid_ipv4(ipaddr): + """Check if IP address has the correct IPv4 address format. + + :param ipaddr: IP address. + :type ipaddr: str + :returns: True in case of correct IPv4 address format, + otherwise return False. + :rtype: bool + """ + try: + ipaddress.IPv4Address(unicode(ipaddr)) + return True + except (AttributeError, ipaddress.AddressValueError): + return False + + +def valid_ipv6(ipaddr): + """Check if IP address has the correct IPv6 address format. + + :param ipaddr: IP address. + :type ipaddr: str + :returns: True in case of correct IPv6 address format, + otherwise return False. + :rtype: bool + """ + try: + ipaddress.IPv6Address(unicode(ipaddr)) + return True + except (AttributeError, ipaddress.AddressValueError): + return False + + +class VerifyPacket(object): + """Define some functions for the test filed verify.""" + + @staticmethod + def check_vxlan_protocol(payload_data): + """ + verify the vxlan protocol in the payload data. + + :param payload_data: the payload data in the packet. + :type payload_data: str + :returns: none + :raises RuntimeError: If the vxlan protocol field verify fails. + """ + # get the vxlan packet and check it + vxlan_pkt = VxLAN(payload_data[0:8]) + if vxlan_pkt.flags != sfccon.VxLAN_FLAGS: + raise RuntimeError("Unexpected Vxlan flags: {0}". + format(vxlan_pkt.flags)) + + if vxlan_pkt.vni != sfccon.VxLAN_DEFAULT_VNI: + raise RuntimeError("Unexpected VNI flag: {0}".format(vxlan_pkt.vni)) + + @staticmethod + def check_vxlangpe_nsh_protocol(payload_data, test_type): + """ + verify the vxlangpe and nsh protocol in the payload data. + + :param payload_data: the payload data in the packet. + :param test_type: the functional test type. + :type payload_data: str + :type test_type: str + :returns: none + :raises RuntimeError: If the vxlangpe and nsh protocol + field verify fails. + """ + # get the vxlan-gpe packet and check it + vxlangpe_pkt = VxLANGPE(payload_data[0:8]) + if vxlangpe_pkt.flags != sfccon.VxLANGPE_FLAGS: + raise RuntimeError("Unexpected Vxlan-GPE flags: {0}". + format(vxlangpe_pkt.flags)) + + if vxlangpe_pkt.nextproto != sfccon.VxLANGPE_NEXT_PROTOCOL: + raise RuntimeError("next protocol not the NSH") + + if vxlangpe_pkt.vni != sfccon.VxLANGPE_DEFAULT_VNI: + raise RuntimeError("Unexpected VNI flag: {0}". + format(vxlangpe_pkt.vni)) + + # get the NSH packet and check it + nsh_pkt = NSH(payload_data[8:32]) + if nsh_pkt.flags != sfccon.NSH_FLAGS: + raise RuntimeError("Unexpected NSH flags: {0}". + format(nsh_pkt.flags)) + + if nsh_pkt.length != sfccon.NSH_HEADER_LENGTH: + raise RuntimeError("NSH length {0} incorrect". + format(nsh_pkt.length)) + + if nsh_pkt.MDtype != sfccon.NSH_DEFAULT_MDTYPE: + raise RuntimeError("NSH MD-Type {0} incorrect". + format(nsh_pkt.MDtype)) + + if nsh_pkt.nextproto != sfccon.NSH_NEXT_PROTOCOL: + raise RuntimeError("NSH next protocol {0} incorrect". + format(nsh_pkt.nextproto)) + + if test_type == "Proxy Outbound" or test_type == "SFF": + expect_nsi = sfccon.NSH_DEFAULT_NSI - 1 + else: + expect_nsi = sfccon.NSH_DEFAULT_NSI + + nsp_nsi = nsh_pkt.nsp_nsi + nsp = nsp_nsi >> 8 + nsi = nsp_nsi & 0x000000FF + if nsp != sfccon.NSH_DEFAULT_NSP: + raise RuntimeError("NSH Service Path ID {0} incorrect".format(nsp)) + + if nsi != expect_nsi: + raise RuntimeError("NSH Service Index {0} incorrect".format(nsi)) + + nsh_c1 = nsh_pkt.c1 + if nsh_c1 != sfccon.NSH_DEFAULT_C1: + raise RuntimeError("NSH c1 {0} incorrect".format(nsh_c1)) + + nsh_c2 = nsh_pkt.c2 + if nsh_c2 != sfccon.NSH_DEFAULT_C2: + raise RuntimeError("NSH c2 {0} incorrect".format(nsh_c2)) + + nsh_c3 = nsh_pkt.c3 + if nsh_c3 != sfccon.NSH_DEFAULT_C3: + raise RuntimeError("NSH c3 {0} incorrect".format(nsh_c3)) + + nsh_c4 = nsh_pkt.c4 + if nsh_c4 != sfccon.NSH_DEFAULT_C4: + raise RuntimeError("NSH c4 {0} incorrect".format(nsh_c4)) + + + @staticmethod + def check_the_nsh_sfc_packet(frame_size, test_type): + """ + verify the NSH SFC functional test loopback packet field + is correct. + + :param frame_size: the origin frame size. + :param test_type: the test type. + (Classifier, Proxy Inbound, Proxy Outbound, SFF). + :type frame_size: Integer + :type test_type: str + :returns: none + :raises RuntimeError: If the packet field verify fails. + """ + + rx_pcapfile = '{0}/nsh_sfc_tests/sfc_scripts/temp_packet.pcap' \ + .format(con.REMOTE_FW_DIR) + + logger.trace('read pcap file:{0}'.format(rx_pcapfile)) + + packets = rdpcap(rx_pcapfile) + if len(packets) < 1: + raise RuntimeError("No packet is received!") + + ether = packets[0] + + origin_size = int(frame_size) + if test_type == "Classifier": + expect_pkt_len = origin_size + 74 - 4 + elif test_type == "Proxy Inbound": + expect_pkt_len = origin_size - 24 - 4 + elif test_type == "Proxy Outbound": + expect_pkt_len = origin_size + 24 - 4 + else: + expect_pkt_len = origin_size - 4 + + recv_pkt_len = len(ether) + if recv_pkt_len != expect_pkt_len: + raise RuntimeError("Received packet size {0} not " \ + "the expect size {1}".format(recv_pkt_len, \ + expect_pkt_len)) + + if not ether.haslayer(IP): + raise RuntimeError("Not a IPv4 packet") + + pkt_proto = ether[IP].proto + if pkt_proto != sfccon.UDP_PROTOCOL: + raise RuntimeError("Not a UDP packet , {0}".format(pkt_proto)) + + if test_type == "Proxy Inbound": + expect_udp_port = sfccon.VxLAN_UDP_PORT + else: + expect_udp_port = sfccon.VxLANGPE_UDP_PORT + + dst_port = ether[UDP].dport + if dst_port != expect_udp_port: + raise RuntimeError("UDP dest port must be {0}, {1}". + format(expect_udp_port, dst_port)) + + payload_data = ether[Raw].load + + if test_type == "Proxy Inbound": + VerifyPacket.check_vxlan_protocol(payload_data) + else: + VerifyPacket.check_vxlangpe_nsh_protocol(payload_data, test_type) diff --git a/resources/libraries/python/SFC/__init__.py b/resources/libraries/python/SFC/__init__.py new file mode 100644 index 0000000000..e90d968cca --- /dev/null +++ b/resources/libraries/python/SFC/__init__.py @@ -0,0 +1,16 @@ +# Copyright (c) 2017 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +__init__ file for directory resources/libraries/python/SFC +""" |