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Merge pull request #42 from mweinelt/master

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pep8, batadv-vis socket support, batman gateway handling refactored
This commit is contained in:
Nils Schneider 2015-03-25 14:43:04 +01:00
parent dfccd01b69 eb26ea9a5f
commit 30670feb31
8 changed files with 86 additions and 57 deletions
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2
.travis.yml
View file

@ -3,4 +3,4 @@ language: python
python:
- "3.4"
install: "pip install pep8"
script: "pep8 *.py"
script: "pep8 *.py lib/*.py"

2
backend.py
View file

@ -50,7 +50,7 @@ def main(params):
bm = list(map(lambda d:
(d.vis_data(True), d.gateway_list()),
map(Batman, params['mesh'])))
map(Batman, params['mesh'], params['alfred_sock'])))
for vis_data, gateway_list in bm:
nodes.import_mesh_ifs_vis_data(nodedb['nodes'], vis_data)
nodes.import_vis_clientcount(nodedb['nodes'], vis_data)

6
lib/NodeRRD.py
View file

@ -32,11 +32,13 @@ class NodeRRD(RRD):
@property
def imagename(self):
return "{basename}.png".format(basename=os.path.basename(self.filename).rsplit('.', 2)[0])
return "{basename}.png".format(
basename=os.path.basename(self.filename).rsplit('.', 2)[0])
# TODO: fix this, python does not support function overloading
def update(self):
super().update({'upstate': int(self.node['flags']['online']), 'clients': self.node['statistics']['clients']})
super().update({'upstate': int(self.node['flags']['online']),
'clients': self.node['statistics']['clients']})
def graph(self, directory, timeframe):
"""

23
lib/RRD.py
View file

@ -83,9 +83,11 @@ class RRD(object):
info = self.info()
if set(ds_list) - set(info['ds'].values()) != set():
for ds in ds_list:
if ds.name in info['ds'] and ds.type != info['ds'][ds.name].type:
raise RRDIncompatibleException("%s is %s but should be %s" %
(ds.name, ds.type, info['ds'][ds.name].type))
if ds.name in info['ds'] and\
ds.type != info['ds'][ds.name].type:
raise RRDIncompatibleException(
"{} is {} but should be {}".format(
ds.name, ds.type, info['ds'][ds.name].type))
else:
raise RRDOutdatedException()
@ -108,8 +110,10 @@ class RRD(object):
if ds.name in info['ds']:
old_ds = info['ds'][ds.name]
if info['ds'][ds.name].type != ds.type:
raise RuntimeError('Cannot convert existing DS "%s" from type "%s" to "%s"' %
(ds.name, old_ds.type, ds.type))
raise RuntimeError(
"Cannot convert existing DS '{}'"
"from type '{}' to '{}'".format(
ds.name, old_ds.type, ds.type))
ds.index = old_ds.index
new_ds[ds.index] = ds
else:
@ -237,7 +241,8 @@ class RRD(object):
for line in out.splitlines():
base = info
for match in self._info_regex.finditer(line):
section, key, name, value = match.group("section", "key", "name", "value")
section, key, name, value = match.group(
"section", "key", "name", "value")
if section and key:
try:
key = int(key)
@ -258,7 +263,8 @@ class RRD(object):
base[name] = value
dss = {}
for name, ds in info['ds'].items():
ds_obj = DS(name, ds['type'], ds['minimal_heartbeat'], ds['min'], ds['max'])
ds_obj = DS(name, ds['type'], ds['minimal_heartbeat'],
ds['min'], ds['max'])
ds_obj.index = ds['index']
ds_obj.last_ds = ds['last_ds']
ds_obj.value = ds['value']
@ -267,7 +273,8 @@ class RRD(object):
info['ds'] = dss
rras = []
for rra in info['rra'].values():
rras.append(RRA(rra['cf'], rra['xff'], rra['pdp_per_row'], rra['rows']))
rras.append(RRA(rra['cf'], rra['xff'],
rra['pdp_per_row'], rra['rows']))
info['rra'] = rras
self._cached_info = info
return info

47
lib/batman.py
View file

@ -8,8 +8,12 @@ class Batman(object):
Bindings for B.A.T.M.A.N. Advanced
commandline interface "batctl"
"""
def __init__(self, mesh_interface='bat0'):
def __init__(self, mesh_interface='bat0', alfred_sockpath=None):
self.mesh_interface = mesh_interface
self.alfred_sock = alfred_sockpath
# compile regular expressions only once on startup
self.mac_addr_pattern = re.compile(r'(([a-z0-9]{2}:){5}[a-z0-9]{2})')
def vis_data(self, batadv_vis=False):
vds = self.vis_data_batctl_legacy()
@ -44,8 +48,10 @@ class Batman(object):
Parse "batadv-vis -i <mesh_interface> -f json"
into an array of dictionaries.
"""
output = subprocess.check_output(
['batadv-vis', '-i', self.mesh_interface, '-f', 'json'])
cmd = ['batadv-vis', '-i', self.mesh_interface, '-f', 'json']
if self.alfred_sock:
cmd.extend(['-u', self.alfred_sock])
output = subprocess.check_output(cmd)
lines = output.splitlines()
return self.vis_data_helper(lines)
@ -57,36 +63,35 @@ class Batman(object):
output = subprocess.check_output(
['batctl', '-m', self.mesh_interface, 'gwl', '-n'])
output_utf8 = output.decode('utf-8')
lines = output_utf8.splitlines()
own_mac = re.match(r"^.*MainIF/MAC: [^/]+/([0-9a-f:]+).*$",
lines[0]).group(1)
rows = output_utf8.splitlines()
gateways = []
gw_mode = self.gateway_mode()
if gw_mode['mode'] == 'server':
gateways.append(own_mac)
for line in lines:
gw_line = re.match(r"^(?:=>)? +([0-9a-f:]+) ", line)
if gw_line:
gateways.append(gw_line.group(1))
# local gateway
header = rows.pop(0)
mode, bandwidth = self.gateway_mode()
if mode == 'server':
local_gw_mac = self.mac_addr_pattern.search(header).group(0)
gateways.append(local_gw_mac)
# remote gateway(s)
for row in rows:
match = self.mac_addr_pattern.search(row)
if match:
gateways.append(match.group(1))
return gateways
def gateway_mode(self):
"""
Parse "batctl -m <mesh_interface> gw"
return: tuple mode, bandwidth, if mode != server then bandwidth is None
"""
output = subprocess.check_output(
['batctl', '-m', self.mesh_interface, 'gw'])
elements = output.decode("utf-8").split()
mode = elements[0]
if mode == 'server':
return {'mode': 'server',
'bandwidth': elements[3]}
else:
return {'mode': mode}
chunks = output.decode("utf-8").split()
return chunks[0], chunks[3] if 3 in chunks else None
if __name__ == "__main__":
bc = Batman()

25
lib/graph.py
View file

@ -8,12 +8,17 @@ from lib.nodes import build_mac_table
def import_vis_data(graph, nodes, vis_data):
macs = build_mac_table(nodes)
nodes_a = map(lambda d: 2*[d['primary']], filter(lambda d: 'primary' in d, vis_data))
nodes_b = map(lambda d: [d['secondary'], d['of']], filter(lambda d: 'secondary' in d, vis_data))
graph.add_nodes_from(map(lambda a, b: (a, dict(primary=b, node_id=macs.get(b))), *zip(*chain(nodes_a, nodes_b))))
nodes_a = map(lambda d: 2*[d['primary']],
filter(lambda d: 'primary' in d, vis_data))
nodes_b = map(lambda d: [d['secondary'], d['of']],
filter(lambda d: 'secondary' in d, vis_data))
graph.add_nodes_from(map(lambda a, b:
(a, dict(primary=b, node_id=macs.get(b))),
*zip(*chain(nodes_a, nodes_b))))
edges = filter(lambda d: 'neighbor' in d, vis_data)
graph.add_edges_from(map(lambda d: (d['router'], d['neighbor'], dict(tq=float(d['label']))), edges))
graph.add_edges_from(map(lambda d: (d['router'], d['neighbor'],
dict(tq=float(d['label']))), edges))
def mark_vpn(graph, vpn_macs):
@ -32,11 +37,13 @@ def to_multigraph(graph):
return node['primary'] if node else a
def map_node(node, data):
return (data['primary'], dict(node_id=data['node_id'])) if data else (node, dict())
return (data['primary'],
dict(node_id=data['node_id'])) if data else (node, dict())
digraph = nx.MultiDiGraph()
digraph.add_nodes_from(map(map_node, *zip(*graph.nodes_iter(data=True))))
digraph.add_edges_from(map(lambda a, b, data: (f(a), f(b), data), *zip(*graph.edges_iter(data=True))))
digraph.add_edges_from(map(lambda a, b, data: (f(a), f(b), data),
*zip(*graph.edges_iter(data=True))))
return digraph
@ -50,7 +57,8 @@ def merge_nodes(graph):
multigraph = to_multigraph(graph)
digraph = nx.DiGraph()
digraph.add_nodes_from(multigraph.nodes_iter(data=True))
edges = chain.from_iterable([[(e, d, merge_edges(multigraph[e][d].values()))
edges = chain.from_iterable([[(e, d, merge_edges(
multigraph[e][d].values()))
for d in multigraph[e]] for e in multigraph])
digraph.add_edges_from(edges)
@ -69,7 +77,8 @@ def to_undirected(graph):
graph = nx.Graph()
graph.add_nodes_from(multigraph.nodes_iter(data=True))
edges = chain.from_iterable([[(e, d, merge_edges(multigraph[e][d].values()))
edges = chain.from_iterable([[(e, d, merge_edges(
multigraph[e][d].values()))
for d in multigraph[e]] for e in multigraph])
graph.add_edges_from(edges)

25
lib/nodes.py
View file

@ -53,23 +53,26 @@ def reset_statistics(nodes):
node['statistics'] = {'clients': 0}
def import_statistics(nodes, statistics):
def import_statistics(nodes, stats):
def add(node, statistics, target, source, f=lambda d: d):
try:
node['statistics'][target] = f(reduce(dict.__getitem__, source, statistics))
node['statistics'][target] = f(reduce(dict.__getitem__,
source,
statistics))
except (KeyError, TypeError):
pass
macs = build_mac_table(nodes)
statistics = filter(lambda d: 'node_id' in d, statistics)
statistics = filter(lambda d: d['node_id'] in nodes, statistics)
for node, statistics in map(lambda d: (nodes[d['node_id']], d), statistics):
add(node, statistics, 'clients', ['clients', 'total'])
add(node, statistics, 'gateway', ['gateway'], lambda d: macs.get(d, d))
add(node, statistics, 'uptime', ['uptime'])
add(node, statistics, 'loadavg', ['loadavg'])
add(node, statistics, 'memory_usage', ['memory'], lambda d: 1 - d['free'] / d['total'])
add(node, statistics, 'rootfs_usage', ['rootfs_usage'])
stats = filter(lambda d: 'node_id' in d, stats)
stats = filter(lambda d: d['node_id'] in nodes, stats)
for node, stats in map(lambda d: (nodes[d['node_id']], d), stats):
add(node, stats, 'clients', ['clients', 'total'])
add(node, stats, 'gateway', ['gateway'], lambda d: macs.get(d, d))
add(node, stats, 'uptime', ['uptime'])
add(node, stats, 'loadavg', ['loadavg'])
add(node, stats, 'memory_usage', ['memory'],
lambda d: 1 - d['free'] / d['total'])
add(node, stats, 'rootfs_usage', ['rootfs_usage'])
def import_mesh_ifs_vis_data(nodes, vis_data):

9
lib/rrddb.py
View file

@ -28,8 +28,10 @@ class RRD(object):
os.mkdir(self.imagePath)
def update_database(self, nodes):
online_nodes = dict(filter(lambda d: d[1]['flags']['online'], nodes.items()))
client_count = sum(map(lambda d: d['statistics']['clients'], online_nodes.values()))
online_nodes = dict(filter(
lambda d: d[1]['flags']['online'], nodes.items()))
client_count = sum(map(
lambda d: d['statistics']['clients'], online_nodes.values()))
self.globalDb.update(len(online_nodes), client_count)
for node_id, node in online_nodes.items():
@ -37,7 +39,8 @@ class RRD(object):
rrd.update()
def update_images(self):
self.globalDb.graph(os.path.join(self.imagePath, "globalGraph.png"), self.displayTimeGlobal)
self.globalDb.graph(os.path.join(self.imagePath, "globalGraph.png"),
self.displayTimeGlobal)
nodedb_files = os.listdir(self.dbPath)