--- /dev/null
+#!/usr/bin/python
+
+# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
+# 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 script is handling starting of VIRL simulations."""
+
+import argparse
+import netifaces
+import os
+import paramiko
+import random
+import re
+import shutil
+import sys
+import tempfile
+import time
+
+import requests
+
+IPS_PER_SIMULATION = 5
+
+def indent(lines, amount, fillchar=' '):
+ """Indent the string by amount of fill chars.
+
+ :param lines: String to indent.
+ :param amount: Number of fill chars.
+ :param fillchar: Filling character.
+ :type lines: str
+ :type amount: int
+ :type fillchar: str
+ :returns: Indented string.
+ :rtype: str
+ """
+ padding = amount * fillchar
+ return padding + ('\n'+padding).join(lines.split('\n'))
+
+def print_to_stderr(msg, end='\n'):
+ """Writes any text to stderr.
+
+ :param msg: Message to print.
+ :param end: By default print new line at the end.
+ :type msg: str
+ :type end: str
+ """
+ try:
+ sys.stderr.write(str(msg) + end)
+ except ValueError:
+ pass
+
+def get_assigned_interfaces(args, network="flat"):
+ """Retrieve assigned interfaces in openstack network.
+
+ :param args: Command line params.
+ :param network: Openstack network.
+ :type args: ArgumentParser
+ :type network: str
+ :returns: Assigned interfaces.
+ :rtype: list
+ :raises RuntimeError: If response is not 200.
+ """
+ req = requests.get('http://{}/openstack/rest/ports/{}'
+ .format(args.virl_ip, network),
+ auth=(args.username, args.password))
+ if req.status_code == 200:
+ return req.json()
+ else:
+ raise RuntimeError("ERROR: Retrieving ports in use - "
+ "Status other than 200 HTTP OK:\n{}"
+ .format(req.content))
+
+def get_assigned_interfaces_count(args, network="flat"):
+ """Count assigned interfaces in openstack network.
+
+ :param args: Command line params.
+ :param network: Openstack network.
+ :type args: ArgumentParser
+ :type network: str
+ :returns: Assigned interfaces count.
+ :rtype: int
+ """
+ return len(get_assigned_interfaces(args, network=network))
+
+def check_ip_addresses(args):
+ """Check IP address availability.
+
+ :param args: Command line params.
+ :type args: ArgumentParser
+ :raises RuntimeError: If not enough free addresses available.
+ """
+ for i in range(args.wait_count):
+ if args.quota - \
+ get_assigned_interfaces_count(args) >= IPS_PER_SIMULATION:
+ break
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: - Attempt {} out of {}, waiting for free "
+ "IP addresses".format(i, args.wait_count))
+ # Wait random amount of time within range 1-3 minutes
+ time.sleep(random.randint(60, 180))
+ else:
+ raise RuntimeError("ERROR: Not enough IP addresses to run simulation")
+
+def check_virl_resources(args):
+ """Check virl resources availability.
+
+ :param args: Command line params.
+ :type args: ArgumentParser
+ """
+ check_ip_addresses(args)
+
+#
+# FIXME: Right now, this is really coded like a shell script, as one big
+# function executed in sequence. This should be broken down into multiple
+# functions.
+#
+def main():
+ """ Main function."""
+ #
+ # Get our default interface IP address. This will become the default
+ # value for the "NFS Server IP" option.
+ #
+ gws = netifaces.gateways()
+ addrs = netifaces.ifaddresses(gws['default'][netifaces.AF_INET][1])
+ default_addr = addrs[netifaces.AF_INET][0]['addr']
+
+ #
+ # Verify CLI parameters and try to download our VPP image into a temporary
+ # file first
+ #
+ parser = argparse.ArgumentParser()
+ parser.add_argument("topology", help="the base topology to be started")
+ parser.add_argument("packages", help="Path to the dmm package file that " +
+ "is/are to be installed", nargs='+')
+ parser.add_argument("-c", "--copy", help="Copy the dmm packages, " +
+ "leaving the originals in place. Default is to " +
+ "move them.", action='store_true')
+ parser.add_argument("-k", "--keep", help="Keep (do not delete) the " +
+ "simulation in case of error", action='store_true')
+ parser.add_argument("-v", "--verbosity", action="count", default=0)
+ parser.add_argument("-nip", "--nfs-server-ip", help="NFS server (our) IP " +
+ "default is derived from routing table: " +
+ "{}".format(default_addr), default=default_addr)
+ parser.add_argument("-ns", "--nfs-scratch-directory",
+ help="Server location for NFS scratch diretory",
+ default="/nfs/scratch")
+ parser.add_argument("-nc", "--nfs-common-directory",
+ help="Server location for NFS common (read-only) " +
+ "directory", default="/nfs/common")
+ parser.add_argument("-wc", "--wait-count",
+ help="number of intervals to wait for simulation to " +
+ "be ready", type=int, default=24)
+ parser.add_argument("-wt", "--wait-time",
+ help="length of a single interval to wait for " +
+ "simulation to be ready", type=int, default=5)
+ parser.add_argument("-vip", "--virl-ip",
+ help="VIRL IP and Port (e.g. 127.0.0.1:19399)",
+ default="127.0.0.1:19399")
+ parser.add_argument("-u", "--username", help="VIRL username",
+ default="tb4-virl")
+ parser.add_argument("-au", "--admin-username", help="VIRL admin username",
+ default="uwmadmin")
+ parser.add_argument("-p", "--password", help="VIRL password",
+ default="Cisco1234")
+ parser.add_argument("-su", "--ssh-user", help="SSH username",
+ default="cisco")
+ parser.add_argument("-e", "--expiry", help="Simulation expiry",
+ default="120")
+ parser.add_argument("-spr", "--ssh-privkey", help="SSH private keyfile",
+ default="/home/jenkins-in/.ssh/id_rsa_virl")
+ parser.add_argument("-spu", "--ssh-pubkey", help="SSH public keyfile",
+ default="/home/jenkins-in/.ssh/id_rsa_virl.pub")
+ parser.add_argument("-r", "--release", help="VM disk image/release " +
+ "(ex. \"csit-ubuntu-16.04.1_2016-12-19_1.6\")",
+ default="csit-ubuntu-16.04.1_2016-12-19_1.6")
+ parser.add_argument("--topology-directory", help="Topology directory",
+ default="/home/jenkins-in/testcase-infra/topologies")
+ parser.add_argument("-q", "--quota",
+ help="VIRL quota for max number of allowed IPs",
+ type=int, default=74)
+
+ args = parser.parse_args()
+
+ #
+ # Check if topology and template exist
+ #
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Running with topology {}"
+ .format(args.topology))
+
+ topology_virl_filename = os.path.join(args.topology_directory,
+ args.topology + ".virl")
+ topology_yaml_filename = os.path.join(args.topology_directory,
+ args.topology + ".yaml")
+
+ if not os.path.isfile(topology_virl_filename):
+ print_to_stderr("ERROR: Topology VIRL file {} does not exist"
+ .format(topology_virl_filename))
+ sys.exit(1)
+ if not os.path.isfile(topology_yaml_filename):
+ print_to_stderr("ERROR: Topology YAML file {} does not exist"
+ .format(topology_yaml_filename))
+ sys.exit(1)
+
+ #
+ # Check if DMM package exists
+ #
+ for package in args.packages:
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Checking if file {} exists"
+ .format(package))
+ if not os.path.isfile(package):
+ print_to_stderr("ERROR: DMM package {} does not exist."
+ .format(package))
+ sys.exit(1)
+
+ #
+ # Start VIRL topology
+ #
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: Starting VIRL topology")
+ temp_handle, temp_topology = tempfile.mkstemp()
+ with open(args.ssh_pubkey, 'r') as pubkey_file:
+ pub_key = pubkey_file.read().replace('\n', '')
+ with open(temp_topology, 'w') as new_file, \
+ open(topology_virl_filename, 'r') as old_file:
+ for line in old_file:
+ line = line.replace(" - VIRL-USER-SSH-PUBLIC-KEY", " - "+pub_key)
+ line = line.replace("$$NFS_SERVER_SCRATCH$$", \
+ args.nfs_server_ip+":"+args.nfs_scratch_directory)
+ line = line.replace("$$NFS_SERVER_COMMON$$", \
+ args.nfs_server_ip+":"+args.nfs_common_directory)
+ line = line.replace("$$VM_IMAGE$$", "server-"+args.release)
+ new_file.write(line)
+ os.close(temp_handle)
+
+ try:
+ data = open(temp_topology, 'rb')
+ check_virl_resources(args)
+ req = requests.post('http://' + args.virl_ip + '/simengine/rest/launch',
+ auth=(args.username, args.password),
+ data=data)
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: - Request URL {}"
+ .format(req.url))
+ print_to_stderr("{}"
+ .format(req.text))
+ print_to_stderr("DEBUG: - Response Code {}"
+ .format(req.status_code))
+ new_file.close()
+ if req.status_code != 200:
+ raise RuntimeError("ERROR: Launching VIRL simulation - "
+ "Status other than 200 HTTP OK:\n{}"
+ .format(req.content))
+ except (requests.exceptions.RequestException,
+ RuntimeError) as ex_error:
+ print_to_stderr(ex_error)
+ os.remove(temp_topology)
+ sys.exit(1)
+
+ # If we got here, we had a good response. The response content is the
+ # session ID.
+ session_id = req.content
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: VIRL simulation session-id: {}"
+ .format(session_id))
+
+ # Set session expiry to autokill sessions if not done from jenkins
+ if not args.keep:
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: Setting expire for session-id: {}"
+ .format(session_id))
+ try:
+ req = requests.put('http://' + args.virl_ip +
+ '/simengine/rest/admin-update/' + session_id +
+ '/expiry',
+ auth=(args.admin_username, args.password),
+ params={'user': args.username,
+ 'expires': args.expiry})
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: - Request URL {}"
+ .format(req.url))
+ print_to_stderr("{}"
+ .format(req.text))
+ print_to_stderr("DEBUG: - Response Code {}"
+ .format(req.status_code))
+ if req.status_code != 200:
+ raise RuntimeError("ERROR: Setting expiry to simulation - "
+ "Status other than 200 HTTP OK:\n{}"
+ .format(req.content))
+ except (requests.exceptions.RequestException,
+ RuntimeError) as ex_error:
+ print_to_stderr(ex_error)
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+ os.remove(temp_topology)
+ print "{}".format(session_id)
+ sys.exit(1)
+
+ #
+ # Create simulation scratch directory. Move topology file into that
+ # directory. Copy or move DMM packages into that directory.
+ #
+ scratch_directory = os.path.join(args.nfs_scratch_directory, session_id)
+ os.mkdir(scratch_directory)
+ shutil.move(temp_topology, os.path.join(scratch_directory,
+ "virl_topology.virl"))
+ os.mkdir(os.path.join(scratch_directory, "dmmtest"))
+ for package in args.packages:
+ if args.copy:
+ shutil.copy(package, os.path.join(scratch_directory, "dmmtest",
+ os.path.basename(package)))
+ else:
+ shutil.move(package, os.path.join(scratch_directory, "dmmtest",
+ os.path.basename(package)))
+
+ #
+ # Wait for simulation to become active
+ #
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: Waiting for simulation to become active")
+
+ sim_is_started = False
+ nodelist = []
+
+ count = args.wait_count
+ while (count > 0) and not sim_is_started:
+ time.sleep(args.wait_time)
+ count -= 1
+
+ req = requests.get('http://' + args.virl_ip + '/simengine/rest/nodes/' +
+ session_id, auth=(args.username, args.password))
+ data = req.json()
+
+ active = 0
+ total = 0
+
+ # Flush the node list every time, keep the last one
+ nodelist = []
+
+ # Hosts are the keys of the inner dictionary
+ for key in data[session_id].keys():
+ if data[session_id][key]['management-proxy'] == "self":
+ continue
+ nodelist.append(key)
+ total += 1
+ if data[session_id][key]['state'] == "ACTIVE":
+ active += 1
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: - Attempt {} out of {}, total {} hosts, "
+ "{} active".format(args.wait_count-count,
+ args.wait_count, total, active))
+ if active == total:
+ sim_is_started = True
+
+ if not sim_is_started:
+ print_to_stderr("ERROR: Simulation nodes never changed to ACTIVE state")
+ print_to_stderr("Last VIRL response:")
+ print_to_stderr(data)
+ if not args.keep:
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+ try:
+ shutil.rmtree(scratch_directory)
+ except:
+ print_to_stderr("ERROR: Removing scratch directory")
+ print "{}".format(session_id)
+ sys.exit(1)
+
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Nodes: {}"
+ .format(", ".join(nodelist)))
+
+ #
+ # Fetch simulation's IPs and create files
+ # (ansible hosts file, topology YAML file)
+ #
+ try:
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/interfaces/' + session_id,
+ auth=(args.username, args.password),
+ params={'fetch-state': '1'})
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: - Request URL {}"
+ .format(req.url))
+ print_to_stderr("DEBUG: - Request Text")
+ print_to_stderr("{}".format(req.text))
+ print_to_stderr("DEBUG: - Response Code {}"
+ .format(req.status_code))
+ if req.status_code != 200:
+ raise RuntimeError("ERROR:Fetching IP's of simulation - "
+ "Status other than 200 HTTP OK:\n{}"
+ .format(req.content))
+ except (requests.exceptions.RequestException,
+ RuntimeError) as ex_error:
+ print_to_stderr(ex_error)
+ if not args.keep:
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+ try:
+ shutil.rmtree(scratch_directory)
+ except:
+ print_to_stderr("ERROR: Removing scratch directory")
+ print "{}".format(session_id)
+ sys.exit(1)
+ data = req.json()
+
+ # Populate node addresses
+ nodeaddrs = {}
+ topology = {}
+ for key in nodelist:
+ nodetype = re.split('[0-9]', key)[0]
+ if not nodetype in nodeaddrs:
+ nodeaddrs[nodetype] = {}
+ nodeaddrs[nodetype][key] = re.split('\\/', \
+ data[session_id][key]['management']['ip-address'])[0]
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Node {} is of type {} and has mgmt IP {}"
+ .format(key, nodetype, nodeaddrs[nodetype][key]))
+
+ topology[key] = {}
+ for key2 in data[session_id][key]:
+ topology[key]["nic-"+key2] = data[session_id][key][key2]
+ if 'ip-address' in topology[key]["nic-"+key2]:
+ if topology[key]["nic-"+key2]['ip-address'] is not None:
+ topology[key]["nic-"+key2]['ip-addr'] = re.split('\\/', \
+ topology[key]["nic-"+key2]['ip-address'])[0]
+
+ # Write ansible file
+ ansiblehosts = open(os.path.join(scratch_directory, 'ansible-hosts'), 'w')
+ for key1 in nodeaddrs:
+ ansiblehosts.write("[{}]\n".format(key1))
+ for key2 in nodeaddrs[key1]:
+ ansiblehosts.write("{} hostname={}\n".format(nodeaddrs[key1][key2],
+ key2))
+ ansiblehosts.close()
+
+ # Process topology YAML template
+ with open(args.ssh_privkey, 'r') as privkey_file:
+ priv_key = indent(privkey_file.read(), 6)
+
+ with open(os.path.join(scratch_directory, "topology.yaml"), 'w') as \
+ new_file, open(topology_yaml_filename, 'r') as old_file:
+ for line in old_file:
+ new_file.write(line.format(priv_key=priv_key, topology=topology))
+
+ #
+ # Wait for hosts to become reachable over SSH
+ #
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: Waiting for hosts to become reachable over SSH")
+
+ missing = -1
+ count = args.wait_count
+ while (count > 0) and missing != 0:
+ time.sleep(args.wait_time)
+ count -= 1
+
+ missing = 0
+ for key in nodelist:
+ if not os.path.exists(os.path.join(scratch_directory, key)):
+ missing += 1
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Attempt {} out of {}, waiting for {} hosts"
+ .format(args.wait_count-count, args.wait_count,
+ missing))
+
+ if missing != 0:
+ print_to_stderr("ERROR: Simulation started OK but {} hosts never "
+ "mounted their NFS directory".format(missing))
+ if not args.keep:
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+ try:
+ shutil.rmtree(scratch_directory)
+ except:
+ print_to_stderr("ERROR: Removing scratch directory")
+ print "{}".format(session_id)
+ sys.exit(1)
+
+ #
+ # just decompress the DMM tar packages
+ #
+ if args.verbosity >= 1:
+ print_to_stderr("DEBUG: Uprading DMM")
+
+ for key1 in nodeaddrs:
+ if not key1 == 'tg':
+ for key2 in nodeaddrs[key1]:
+ ipaddr = nodeaddrs[key1][key2]
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Upgrading DMM on node {}"
+ .format(ipaddr))
+ paramiko.util.log_to_file(os.path.join(scratch_directory,
+ "ssh.log"))
+ client = paramiko.SSHClient()
+ client.load_system_host_keys()
+ client.load_host_keys("/dev/null")
+ client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+ client.connect(ipaddr, username=args.ssh_user,
+ key_filename=args.ssh_privkey)
+ _, stdout, stderr = \
+ client.exec_command('cd /scratch/dmmtest/ && sudo tar zxf dmm_depends.tar.gz')
+ c_stdout = stdout.read()
+ c_stderr = stderr.read()
+ if args.verbosity >= 2:
+ print_to_stderr("DEBUG: Command output was:")
+ print_to_stderr(c_stdout)
+ print_to_stderr("DEBUG: Command stderr was:")
+ print_to_stderr(c_stderr)
+
+ #
+ # Write a file with timestamp to scratch directory. We can use this to track
+ # how long a simulation has been running.
+ #
+ with open(os.path.join(scratch_directory, 'start_time'), 'a') as \
+ timestampfile:
+ timestampfile.write('{}\n'.format(int(time.time())))
+
+ #
+ # Declare victory
+ #
+ if args.verbosity >= 1:
+ print_to_stderr("SESSION ID: {}".format(session_id))
+
+ print "{}".format(session_id)
+
+if __name__ == "__main__":
+ sys.exit(main())
\ No newline at end of file
Code Review / csit.git / commitdiff