--- /dev/null
+#!/usr/bin/python
+
+""" Private Bridge configurator. """
+
+import httplib
+import os
+import select
+import shutil
+import subprocess
+import time
+import tools
+
+from threading import Thread
+import logger
+import tools
+
+priority = 9
+
+def start():
+ logger.log('private bridge plugin starting up...')
+
+def log_call_read(command,timeout=logger.default_timeout_minutes*60,poll=1):
+ message=" ".join(command)
+ logger.log("log_call: running command %s" % message)
+ logger.verbose("log_call: timeout=%r s" % timeout)
+ logger.verbose("log_call: poll=%r s" % poll)
+ trigger=time.time()+timeout
+ try:
+ child = subprocess.Popen(command, bufsize=1,
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
+
+ stdout = ""
+ while True:
+ # see if anything can be read within the poll interval
+ (r,w,x)=select.select([child.stdout],[],[],poll)
+ if r: stdout = stdout + child.stdout.read(1)
+ # is process over ?
+ returncode=child.poll()
+ # yes
+ if returncode != None:
+ stdout = stdout + child.stdout.read()
+ # child is done and return 0
+ if returncode == 0:
+ logger.log("log_call:end command (%s) completed" % message)
+ if stdout != "":
+ logger.log("log_call:stdout: %s" % stdout)
+ return (returncode, stdout)
+ # child has failed
+ else:
+ log("log_call:end command (%s) returned with code %d" %(message,returncode))
+ return (returncode, stdout)
+ # no : still within timeout ?
+ if time.time() >= trigger:
+ child.terminate()
+ logger.log("log_call:end terminating command (%s) - exceeded timeout %d s"%(message,timeout))
+ return (-2, None)
+ break
+ except:
+ logger.log_exc("failed to run command %s" % message)
+
+ return (-1, None)
+
+def ovs_vsctl(args):
+ return log_call_read(["ovs-vsctl"] + args)
+
+def ovs_listbridge():
+ (returncode, stdout) = ovs_vsctl(["list-br"])
+ if (returncode != 0):
+ raise OvsException()
+ return stdout.split()
+
+def ovs_addbridge(name):
+ (returncode, stdout) = ovs_vsctl(["add-br",name])
+ if (returncode != 0):
+ raise OvsException()
+
+def ovs_listports(name):
+ (returncode, stdout) = ovs_vsctl(["list-ports", name])
+ if (returncode != 0):
+ raise OvsException()
+ return stdout.split()
+
+def ovs_addport(name, portname, type, remoteip, key):
+ args = ["add-port", name, portname, "--", "set", "interface", portname, "type="+type]
+ if remoteip:
+ args = args + ["options:remote_ip=" + remoteip]
+ if key:
+ args = args + ["options:key=" + str(key)]
+
+ (returncode, stdout) = ovs_vsctl(args)
+ if (returncode != 0):
+ raise OvsException()
+
+def ovs_delport(name, portname):
+ (returncode, stdout) = ovs_vsctl(["del-port",name,portname])
+ if (returncode != 0):
+ raise OvsException()
+
+def ensure_slicebridge_created(name, addr):
+ bridges = ovs_listbridge()
+ logger.log("privatebridge: current bridges = " + ",".join(bridges))
+ if name in bridges:
+ return
+
+ ovs_addbridge(name)
+
+ logger.log_call(["ifconfig", name, addr, "netmask", "255.0.0.0"])
+
+def ensure_slicebridge_neighbors(name, sliver_id, neighbors):
+ ports = ovs_listports(name)
+
+ want_ports = []
+ for neighbor in neighbors:
+ (neighbor_node_id, neighbor_ip) = neighbor.split("/")
+ neighbor_node_id = int(neighbor_node_id)
+ portname = "gre%d-%d" % (sliver_id, neighbor_node_id)
+
+ want_ports.append(portname)
+
+ if not portname in ports:
+ ovs_addport(name, portname, "gre", neighbor_ip, sliver_id)
+
+ for port in ports:
+ if port.startswith("gre") and (port not in want_ports):
+ ovs_delport(name, portname)
+
+def configure_slicebridge(sliver, attributes):
+ sliver_name = sliver['name']
+ sliver_id = sliver['slice_id']
+
+ slice_bridge_name = attributes["slice_bridge_name"]
+
+ slice_bridge_addr = attributes.get("slice_bridge_addr", None)
+ if not slice_bridge_addr:
+ logger.log("privatebridge: no slice_bridge_addr for %s" % sliver_name)
+ return
+
+ slice_bridge_neighbors = attributes.get("slice_bridge_neighbors", None)
+ if not slice_bridge_neighbors:
+ logger.log("privatebridge: no slice_bridge_neighbors for %s" % sliver_name)
+ return
+
+ slice_bridge_neighbors = [x.strip() for x in slice_bridge_neighbors.split(",")]
+
+ ensure_slicebridge_created(slice_bridge_name, slice_bridge_addr)
+ ensure_slicebridge_neighbors(slice_bridge_name, sliver_id, slice_bridge_neighbors)
+
+def GetSlivers(data, conf = None, plc = None):
+ node_id = tools.node_id()
+
+ if 'slivers' not in data:
+ logger.log_missing_data("privatebridge.GetSlivers",'slivers')
+ return
+
+ for sliver in data['slivers']:
+ sliver_name = sliver['name']
+
+ # build a dict of attributes, because it's more convenient
+ attributes={}
+ for attribute in sliver['attributes']:
+ attributes[attribute['tagname']] = attribute['value']
+
+ if attributes.get('slice_bridge_name',None):
+ configure_slicebridge(sliver, attributes)
+
+