--- /dev/null
+#!/usr/bin/python
+
+# Copyright (c) 2016 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.
+
+__author__ = 'ckoester@cisco.com'
+
+import sys
+import requests
+import re
+import os
+import argparse
+import tempfile
+import shutil
+import time
+import paramiko
+
+#
+# Helper function to indent a text string
+#
+def indent(lines, amount, fillchar=' '):
+ padding = amount * fillchar
+ return padding + ('\n'+padding).join(lines.split('\n'))
+
+#
+# Main function.
+# 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():
+ #
+ # 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 VPP .deb(s) that " +
+ "is/are to be installed", nargs='+')
+ parser.add_argument("-c", "--copy", help="Copy the .deb 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)
+ # FIXME: THe default value for the following line should not be a hardcoded
+ # address. We should determine it dynamically (e.g. IP address of first
+ # interface or whichever interface is tied to the flat network)
+ parser.add_argument("-nip", "--nfs-server-ip", help="NFS server (our) IP",
+ default="10.30.51.28")
+ 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=12)
+ 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("-p", "--password", help="VIRL password",
+ default="Cisco1234")
+ parser.add_argument("-su", "--ssh-user", help="SSH username",
+ default="cisco")
+ 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("--topology-directory", help="Topology directory",
+ default="/home/jenkins-in/testcase-infra/topologies")
+
+ args = parser.parse_args()
+
+ #
+ # Check if topology and template exist
+ #
+ if args.verbosity >= 2:
+ print "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 "ERROR: Topology VIRL file {} does not exist".\
+ format(topology_virl_filename)
+ sys.exit(1)
+ if not os.path.isfile(topology_yaml_filename):
+ print "ERROR: Topology YAML file {} does not exist".\
+ format(topology_yaml_filename)
+ sys.exit(1)
+
+ #
+ # Check if VPP package exists
+ #
+ for package in args.packages:
+ if args.verbosity >= 2:
+ print "DEBUG: Checking if file {} exists".format(package)
+ if not os.path.isfile(package):
+ print "ERROR: Debian package {} does not exist.".format(package)
+ sys.exit(1)
+
+ #
+ # Start VIRL topology
+ #
+ if args.verbosity >= 1:
+ print "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)
+ new_file.write(line)
+ os.close(temp_handle)
+
+ try:
+ new_file = open(temp_topology, 'rb')
+ headers = {'Content-Type': 'text/xml'}
+ req = requests.post('http://' + args.virl_ip + '/simengine/rest/launch',
+ headers=headers,
+ auth=(args.username, args.password), data=new_file)
+ if args.verbosity >= 2:
+ print "DEBUG: - Response Code {}".format(req.status_code)
+ new_file.close()
+
+ except:
+ print "ERROR: Launching VIRL simulation - received invalid response"
+ print req
+ os.remove(temp_topology)
+ sys.exit(1)
+
+ if req.status_code != 200:
+ print "ERROR: Launching VIRL simulation - received status other " + \
+ "than 200 HTTP OK"
+ print "Status was: {} \n".format(req.status_code)
+ print "Response content was: "
+ print req.content
+ 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
+
+ #
+ # Create simulation scratch directory. Move topology file into that
+ # directory. Copy or move debian 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, "vpp"))
+ for package in args.packages:
+ if args.copy:
+ shutil.copy(package, os.path.join(scratch_directory, "vpp",
+ os.path.basename(package)))
+ else:
+ shutil.move(package, os.path.join(scratch_directory, "vpp",
+ os.path.basename(package)))
+
+ #
+ # Wait for simulation to become active
+ #
+ if args.verbosity >= 1:
+ print "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 "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 "ERROR: Simulation started OK but devices never changed to " + \
+ "ACTIVE state"
+ print "Last VIRL response:"
+ print data
+ if not args.keep:
+ shutil.rmtree(scratch_directory)
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+
+ if args.verbosity >= 2:
+ print "DEBUG: Nodes: " + ", ".join(nodelist)
+
+ #
+ # Fetch simulation's IPs and create files
+ # (ansible hosts file, topology YAML file)
+ #
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/interfaces/' + session_id +
+ '?fetch-state=1', auth=(args.username, args.password))
+ 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 "DEBUG: Node {} is of type {} and has management 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]:
+ 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 "DEBUG: Waiting for hosts to become reachable using 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 "DEBUG: - Attempt {} out of {}, waiting for {} hosts".\
+ format(args.wait_count-count, args.wait_count, missing)
+
+ if missing != 0:
+ print "ERROR: Simulation started OK but {} hosts ".format(missing) + \
+ "never mounted their NFS directory"
+ if not args.keep:
+ shutil.rmtree(scratch_directory)
+ req = requests.get('http://' + args.virl_ip +
+ '/simengine/rest/stop/' + session_id,
+ auth=(args.username, args.password))
+
+ #
+ # Upgrade VPP
+ #
+ if args.verbosity >= 1:
+ print "DEBUG: Uprading VPP"
+
+ for key1 in nodeaddrs:
+ if not key1 == 'tg':
+ for key2 in nodeaddrs[key1]:
+ ipaddr = nodeaddrs[key1][key2]
+ if args.verbosity >= 2:
+ print "DEBUG: Upgrading VPP 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)
+ stdin, stdout, stderr = \
+ client.exec_command('sudo dpkg -i /scratch/vpp/*deb')
+ c_stdout = stdout.read()
+ c_stderr = stderr.read()
+ if args.verbosity >= 2:
+ print "DEBUG: Command output was:"
+ print c_stdout
+ print "DEBUG: Command stderr was:"
+ print 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 "SESSION ID: {}".format(session_id)
+
+ print "{}".format(session_id)
+
+if __name__ == "__main__":
+ sys.exit(main())
Code Review / csit.git / blobdiff