X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=create-topo-attributes.py;h=ab4680ef0795a1d24f9df039116734f92d7a2685;hb=f9245e44c20a170157d5151083ff70ae1154e34a;hp=0f26bbde3e7d692c4ad4c5ea55d4428443eb084e;hpb=9c335a75074d067f48abb5dc6c953b3dd7f42e27;p=nodemanager-topo.git diff --git a/create-topo-attributes.py b/create-topo-attributes.py index 0f26bbd..ab4680e 100755 --- a/create-topo-attributes.py +++ b/create-topo-attributes.py @@ -1,98 +1,32 @@ -#!/usr/bin/python - # $Id$ # $URL$ +""" +Scan the VINI Central database and create topology "rspec" attributes for +slices that have an EGRE key. This script to be run from a cron job. +""" import string import socket -import sys -import optparse -from time import time - -# Load shell with default configuration -sys.path.append('/usr/share/plc_api') -from PLC.Shell import Shell -plc = Shell(globals()) - -parser = optparse.OptionParser() -parser.add_option('-l', '--linkspec', action='store_true', dest='genlinkspec', default=False, help='Generate linkspec dict.') -(options, args) = parser.parse_args() - -# -# Links in the physical topology, gleaned from looking at the Internet2 -# and NLR topology maps. Link (a, b) connects sites with IDs a and b. -# -links = [(2, 12), # I2 Princeton - New York - (4, 5), # NLR Chicago - Houston - (4, 6), # NLR Chicago - Atlanta - (4, 7), # NLR Chicago - Seattle - (4, 9), # NLR Chicago - New York - (4, 10), # NLR Chicago - Wash DC - (5, 6), # NLR Houston - Atlanta - (5, 8), # NLR Houston - Los Angeles - (6, 10), # NLR Atlanta - Wash DC - (7, 8), # NLR Seattle - Los Angeles - (9, 10), # NLR New York - Wash DC - (11, 13), # I2 Chicago - Wash DC - (11, 15), # I2 Chicago - Atlanta - (11, 16), # I2 Chicago - CESNET - (11, 17), # I2 Chicago - Kansas City - (12, 13), # I2 New York - Wash DC - (13, 15), # I2 Wash DC - Atlanta - (15, 19), # I2 Atlanta - Houston - (17, 19), # I2 Kansas City - Houston - (17, 22), # I2 Kansas City - Salt Lake City - (19, 20), # I2 Houston - Los Angeles - (20, 21), # I2 Los Angeles - Seattle - (20, 22), # I2 Los Angeles - Salt Lake City - (21, 22)] # I2 Seattle - Salt Lake City +from topology import links -def gen_adjacencies(links): - """ - Generate site adjacency map from list of links - """ - adj = {} +def get_adjacency_matrix(links): + topo = {} for (a, b) in links: - if a in adj: - adj[a].append(b) - else: - adj[a] = [a, b] - if b in adj: - adj[b].append(a) - else: - adj[b] = [b, a] - return adj - - -def is_adjacent(adjacencies, s1, s2): - """ - Test whether two sites are adjacent to each other in the adjacency graph. - """ - set1 = set(adjacencies[s1]) - set2 = set(adjacencies[s2]) - - if s1 in set2 and s2 in set1: - return True - elif not s1 in set2 and not s2 in set1: - return False - else: - raise Exception("Adjacency mismatch, sites %d and %d." % (s1, s2)) - - -def check_adjacencies(adjacencies): - """ - Check the adjacency graph for discrepancies. - """ - for site in adjacencies: - for adj in adjacencies[site]: - try: - test = is_adjacent(adjacencies, site, adj) - except Exception, e: - print "Error: ", e, " Fix adjacencies!" - return - + aNodes = get_sitenodes(a) + bNodes = get_sitenodes(b) + for nodeA in aNodes: + for nodeB in bNodes: + if nodeA not in topo: + topo[nodeA] = {} + if nodeB not in topo: + topo[nodeB] = {} + topo[nodeA][nodeB] = 1 + topo[nodeB][nodeA] = 1 + return topo + + def get_site(nodeid): if nodes[nodeid]: @@ -112,170 +46,130 @@ def get_sitenodes(siteid): raise Exception("Siteid %s not found." % siteid) -def get_virt_ip(myid, nodeid): - """ - Find the IP address assigned to a virtual interface in the topology - (for creating /etc/hosts) - """ - if myid < nodeid: - virtip = "10.%d.%d.2" % (myid, nodeid) +""" +Find the IP address assigned to a virtual interface in the topology +(for creating /etc/hosts). +Each virtual link is on a /30 subnet. +""" +def get_linkid(myid, remoteid): + if myid < remoteid: + linkid = (myid<<7) + remoteid else: - virtip = "10.%d.%d.3" % (nodeid, myid) - return virtip - + linkid = (remoteid<<7) + myid + return linkid +def get_nodeid(myid, remoteid): + if myid < remoteid: + nodeid = 1 + else: + nodeid = 2 + return nodeid + +def get_virt_ip(myid, remoteid): + linkid = get_linkid(myid, remoteid) + nodeid = get_nodeid(myid, remoteid) + first = linkid >> 6 + second = ((linkid & 0x3f)<<2) + nodeid + return "192.168.%d.%d" % (first, second) + +def get_virt_net(myid, remoteid): + linkid = get_linkid(myid, remoteid) + first = linkid >> 6 + second = (linkid & 0x3f)<<2 + return "192.168.%d.%d/30" % (first, second) + +""" +Create a dictionary of site records keyed by site ID +""" def get_sites(): - """ - Create a dictionary of site records keyed by site ID - """ - tmp = {} + tmp = [] for site in GetSites(): - tmp[site['site_id']] = site - return tmp + t = site['site_id'], site + tmp.append(t) + return dict(tmp) +""" +Create a dictionary of node records keyed by node ID +""" def get_nodes(): - """ - Create a dictionary of node records keyed by node ID - """ - tmp = {} + tmp = [] for node in GetNodes(): - tmp[node['node_id']] = node - return tmp + t = node['node_id'], node + tmp.append(t) + return dict(tmp) -def ifSpecDict(nodedict): - """ - Generate ifspec dict for given node dict. - """ - # ifspecattrs = ['name', - # 'addr', - # 'type', - # 'init_params', - # 'bw', - # 'min_alloc', - # 'max_alloc', - # 'ip_spoof'] - # Assume only 1 node network per node. - nodenetwork = GetNodeNetworks(nodedict['nodenetwork_ids'])[0] - ifspecs = {'name': nodenetwork['hostname'], - 'addr': nodenetwork['ip'], - 'type': nodenetwork['type'], - 'init_params': None, - 'bw': '1Gps', - 'min_alloc': 0, - 'max_alloc': '1Gbps', - 'ip_spoof': False} - return ifspecs +# For debugging +dryrun = 1 - -def linkSpecDict(): - """ - Create dict for physical topology. - """ - # list of attributes in the LinkSpec - # (https://svn.planet-lab.org/svn/geniwrapper/trunk/rspec/model/planetlab.{ecore,xsd}) - # linkspecattrs = ['type', - # 'init_params', - # 'bw', - # 'min_alloc', - # 'max_alloc', - # 'endpoint', # <-- ifspec(S)? - # 'start_time', - # 'duration'] - # list of linkspecs. 1 per adjacency - linkspecs = [] - # links maps sites. Get nodes in site, make linkspecs for each. - for (i, j) in links: - print "sites = (%s, %s) nodes = %s" %(i,j, GetNodes({'site_id':[i,j]}, ['node_id'])) - nodeset = GetNodes({'site_id':[i,j]}) - ifspecs = [] - for node in nodeset: - ifspecs.append(ifSpecDict(node)) - linkspecs.append({\ - 'type': 'ipv4', - 'init_params': None, - 'bw': '1Gbps', - 'min_alloc': '0', - 'bw': '1Gbps', - 'endpoints': ifspecs, - 'start_time': int(time()), - 'duration': '-1'}) - return linkspecs - - -adjacencies = gen_adjacencies(links) -check_adjacencies(adjacencies) - """ Need global topology information """ sites = get_sites() nodes = get_nodes() - -def main(): - """ - Scan the VINI Central database and create topology "rspec" attributes for - slices that have an EGRE key. This script to be run from a cron job. - """ - - for slice in GetSlices(): - """ Create dictionary of the slice's attributes """ - attrs ={} - topo_attr = {} - for attribute in GetSliceAttributes(slice['slice_attribute_ids']): - attrs[attribute['name']] = attribute['slice_attribute_id'] - if attribute['name'] == 'topo_rspec' and attribute['node_id']: - topo_attr[attribute['node_id']] = attribute['slice_attribute_id'] - - if 'egre_key' in attrs: - #print "Virtual topology for %s:" % slice['name'] - slicenodes = set(slice['node_ids']) - hosts = "127.0.0.1\t\tlocalhost\n" - """ - For each node in the slice, check whether nodes at adjacent sites - are also in the slice's node set. If so, add a virtual link to - the rspec. - """ - for node in slicenodes: - topo = [] - for adj in adjacencies[get_site(node)]: - for adj_node in get_sitenodes(adj): - if node != adj_node and adj_node in slicenodes: - link = adj_node, get_ipaddr(adj_node), "1Mbit" - topo.append(link) - shortname = nodes[node]['hostname'].replace('.vini-veritas.net', '') - hosts += "%s\t\t%s\n" % (get_virt_ip(node, adj_node), - shortname) - topo_str = "%s" % topo - #print node, topo_str - if node in topo_attr: - UpdateSliceAttribute(topo_attr[node], topo_str) - del topo_attr[node] - else: - id = slice['slice_id'] - AddSliceAttribute(id, 'topo_rspec', topo_str, node) - - #print hosts - if 'hosts' in attrs: - UpdateSliceAttribute(attrs['hosts'], hosts) +adj_matrix = get_adjacency_matrix(links) + +for slice in GetSlices(): + # Create dictionary of the slice's attributes + attrs ={} + topo_attr = {} + for attribute in GetSliceAttributes(slice['slice_attribute_ids']): + attrs[attribute['name']] = attribute['slice_attribute_id'] + if attribute['name'] == 'topo_rspec' and attribute['node_id']: + topo_attr[attribute['node_id']] = attribute['slice_attribute_id'] + + if dryrun and slice['name'] == 'pl_trellis': + attrs['egre_key'] = 101 + + if 'egre_key' in attrs: + #print "Virtual topology for %s:" % slice['name'] + slicenodes = set(slice['node_ids']) + hosts = "127.0.0.1\t\tlocalhost\n" + """ + For each node in the slice, check whether there are any adjacent + nodes also in the sliceset using the adjacency matrix. + For each pair of adjacent nodes, add to nodes' rspecs. + """ + topo = {} + for a in slicenodes: + for b in adj_matrix[a]: + if b in slicenodes: + if a not in topo: + topo[a] = [] + my_ip = get_virt_ip(a, b) + remote_ip = get_virt_ip(b, a) + net = get_virt_net(a, b) + link = b, get_ipaddr(b), "1Mbit", my_ip, remote_ip, net + topo[a].append(link) + shortname = nodes[a]['hostname'].replace('.vini-veritas.net', '') + hosts += "%s\t\t%s\n" % (my_ip, shortname) + + for node in topo: + topo_str = "%s" % topo[node] + if dryrun: + print node, topo_str + elif node in topo_attr: + UpdateSliceAttribute(topo_attr[node], topo_str) + del topo_attr[node] else: id = slice['slice_id'] - AddSliceAttribute(id, 'hosts', hosts) - #else: - #print "No EGRE key for %s" % slice['name'] + AddSliceAttribute(id, 'topo_rspec', topo_str, node) + + if dryrun: + print hosts + elif 'hosts' in attrs: + UpdateSliceAttribute(attrs['hosts'], hosts) + else: + id = slice['slice_id'] + AddSliceAttribute(id, 'hosts', hosts) + else: + if dryrun: + print "No EGRE key for %s" % slice['name'] + + # Remove old topo_rspec entries - """ Remove old topo_rspec entries """ + if not dryrun: for node in topo_attr: DeleteSliceAttribute(topo_attr[node]) - - -if __name__ == '__main__': - if options.genlinkspec: - import pprint - pp = pprint - print "LinkSpecs =" - pp.pprint(linkSpecDict()) - else: - print "Main" - main() +