def test_build():
"""
Test building and unbuilding a topology using the Mininet engine.
"""
topology = TopologyManager(engine='debug')
# Create topology using the NMLManager
sw1 = topology.nml.create_node(identifier='sw1', name='My Switch 1')
hs1 = topology.nml.create_node(identifier='hs1',
name='My Host 1',
type='host')
sw1p1 = topology.nml.create_biport(sw1)
sw1p2 = topology.nml.create_biport(sw1)
sw1p3 = topology.nml.create_biport(sw1) # noqa
hs1p1 = topology.nml.create_biport(hs1)
hs1p2 = topology.nml.create_biport(hs1)
hs1p3 = topology.nml.create_biport(hs1) # noqa
sw1p1_hs1p1 = topology.nml.create_bilink(sw1p1, hs1p1) # noqa
sw1p2_hs1p2 = topology.nml.create_bilink(sw1p2, hs1p2) # noqa
# Build topology
topology.build()
# Get an engine node
assert topology.get('sw1') is not None
assert topology.get('hs1') is not None
# Unbuild topology
topology.unbuild()
def test_build():
"""
Test building and unbuilding a topology using the Mininet engine.
"""
topology = TopologyManager(engine='debug')
# Create topology using the NMLManager
sw1 = topology.nml.create_node(identifier='sw1', name='My Switch 1')
hs1 = topology.nml.create_node(identifier='hs1', name='My Host 1',
type='host')
sw1p1 = topology.nml.create_biport(sw1)
sw1p2 = topology.nml.create_biport(sw1)
sw1p3 = topology.nml.create_biport(sw1) # noqa
hs1p1 = topology.nml.create_biport(hs1)
hs1p2 = topology.nml.create_biport(hs1)
hs1p3 = topology.nml.create_biport(hs1) # noqa
sw1p1_hs1p1 = topology.nml.create_bilink(sw1p1, hs1p1) # noqa
sw1p2_hs1p2 = topology.nml.create_bilink(sw1p2, hs1p2) # noqa
# Build topology
topology.build()
# Get an engine node
assert topology.get('sw1') is not None
assert topology.get('hs1') is not None
# Unbuild topology
topology.unbuild()
def test_unlink_relink():
"""
Test the unlink and relink calls.
Creates a topology with two hosts with a port each one and a named link
between them. During execution the link gets down and up again and the
connection is asserted in all stages.
"""
topology = """\
[type=host] hs1
[type=host] hs2
[identifier=thelink] hs1:a -- hs2:b
"""
mgr = TopologyManager(engine='docker')
mgr.parse(topology)
mgr.build()
hs1 = mgr.get('hs1')
hs2 = mgr.get('hs2')
try:
assert hs1 is not None
assert hs2 is not None
# Configure IPs
hs1('ip link set dev a up')
hs1('ip addr add 10.0.15.1/24 dev a')
hs2('ip link set dev b up')
hs2('ip addr add 10.0.15.2/24 dev b')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert '1 packets transmitted, 1 received' in ping_result
# Unlink
mgr.unlink('thelink')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert 'Network is unreachable' in ping_result
# Relink
mgr.relink('thelink')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert '1 packets transmitted, 1 received' in ping_result
finally:
mgr.unbuild()
def test_unlink_relink():
"""
Test the unlink and relink calls.
Creates a topology with two hosts with a port each one and a named link
between them. During execution the link gets down and up again and the
connection is asserted in all stages.
"""
topology = """\
[type=host] hs1
[type=host] hs2
[identifier=thelink] hs1:a -- hs2:b
"""
mgr = TopologyManager(engine='docker')
mgr.parse(topology)
mgr.build()
hs1 = mgr.get('hs1')
hs2 = mgr.get('hs2')
try:
assert hs1 is not None
assert hs2 is not None
# Configure IPs
hs1('ip link set dev a up')
hs1('ip addr add 10.0.15.1/24 dev a')
hs2('ip link set dev b up')
hs2('ip addr add 10.0.15.2/24 dev b')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert '1 packets transmitted, 1 received' in ping_result
# Unlink
mgr.unlink('thelink')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert 'Network is unreachable' in ping_result
# Relink
mgr.relink('thelink')
# Test connection
ping_result = hs1('ping -c 1 10.0.15.2')
assert '1 packets transmitted, 1 received' in ping_result
finally:
mgr.unbuild()
def test_autoport():
"""
Test the autoport feature.
"""
topodesc = """
[port_number=5] hs1:oobm
hs1:a -- hs2:x
hs1:2 -- hs2:2
hs1:4 -- hs2:4
hs1:b -- hs2:y
"""
topology = TopologyManager(engine='debug')
topology.parse(topodesc)
topology.build()
assert topology.get('hs1') is not None
assert topology.get('hs2') is not None
ports = {k: dict(v) for k, v in topology.ports.items()}
expected = {
'hs1': {
'oobm': 'oobm',
'a': 'a',
'2': '2',
'4': '4',
'b': 'b',
},
'hs2': {
'x': 'x',
'2': '2',
'4': '4',
'y': 'y',
}
}
topology.unbuild()
ddiff = DeepDiff(ports, expected)
assert not ddiff
def test_autoport():
"""
Test the autoport feature.
"""
topodesc = """
[port_number=5] hs1:oobm
hs1:a -- hs2:x
hs1:2 -- hs2:2
hs1:4 -- hs2:4
hs1:b -- hs2:y
"""
topology = TopologyManager(engine='debug')
topology.parse(topodesc)
topology.build()
assert topology.get('hs1') is not None
assert topology.get('hs2') is not None
ports = {k: dict(v) for k, v in topology.ports.items()}
expected = {
'hs1': {
'oobm': 'oobm',
'a': 'a',
'2': '2',
'4': '4',
'b': 'b',
},
'hs2': {
'x': 'x',
'2': '2',
'4': '4',
'y': 'y',
}
}
topology.unbuild()
ddiff = DeepDiff(ports, expected)
assert not ddiff
def test_build():
"""
Test building and unbuilding a topology using the Mininet engine.
"""
# Create a graph
graph = TopologyGraph()
# Create some nodes
graph.create_node('sw1', name='My Switch 1')
graph.create_node('hs1', name='My Host 1', type='host')
# Create some ports
graph.create_port('p1', 'sw1')
graph.create_port('p2', 'sw1')
graph.create_port('p3', 'sw1')
graph.create_port('p1', 'hs1')
graph.create_port('p2', 'hs1')
graph.create_port('p3', 'hs1')
# Create the links
graph.create_link('sw1', 'p1', 'hs1', 'p1')
graph.create_link('sw1', 'p2', 'hs1', 'p2')
# Check consistency of the graph
graph.check_consistency()
# Create the topology and set the graph
topology = TopologyManager(engine='debug')
topology.graph = graph
# Build the topology
topology.build()
# Get an engine node
assert topology.get('sw1') is not None
assert topology.get('hs1') is not None
# Unbuild topology
topology.unbuild()
def test_attribute_injection(tmpdir):
"""
Test the configuration file is parsed correctly.
"""
workdir = str(tmpdir)
search_path = str(tmpdir.mkdir('test'))
try:
# Write matching topologies
for count, content in enumerate(TOPOLOGY_MATCHES):
output_filename = join(
search_path, 'test_topology_match_{}.py'.format(count)
)
with open(output_filename, 'w') as fd:
fd.write('TOPOLOGY = """\n')
fd.write(content)
fd.write('"""')
# Write the attributes injection file
injection_path = join(workdir, 'attributes_injection.json')
with open(injection_path, 'w') as fd:
fd.write(INJECTION_FILE.format(search_path=search_path))
# Change keys of the expected parsed injection file
expected = OrderedDict()
for key, value in EXPECTED_PARSED_INJECTION_FILE.items():
expected[key.format(search_path=search_path)] = value
# Actually parse the injection file
actual = parse_attribute_injection(
injection_path, search_path=search_path
)
# Compare the actual and the expected
differences = DeepDiff(actual, expected)
# from pprint import pprint
# print('--------------------')
# pprint(actual)
# print('--------------------')
# pprint(expected)
# print('--------------------')
assert not differences
# Test building with injected attributes
injected_attributes = actual[
'{search_path}/test_topology_match_0.py'.format(
search_path=search_path
)
]
topology = TopologyManager()
topology.parse(
TOPOLOGY_TO_BUILD,
inject=injected_attributes
)
topology.build()
sw9 = topology.get('sw9')
sw2 = topology.get('sw2')
hs3 = topology.get('hs3')
hs2 = topology.get('hs2')
assert sw9.metadata == {
'shell': 'vtysh',
'name': 'Switch 9'
}
# [shell=vtysh name="new_name" image=image_for_sw2] sw2
assert sw2.metadata == {
'image': 'image_for_sw2',
'shell': 'vtysh',
'name': 'new_name'
}
assert hs3.metadata == {
'type': 'host',
'name': 'Host 3'
}
assert hs2.metadata == {
'type': 'host',
'name': 'Host 2',
'image': 'image_for_all_hosts',
'hardware': 'hardware_for_sw1_sw3_hs1_hs2'
}
finally:
try:
rmtree(workdir)
except:
pass
def test_attribute_injection(tmpdir):
"""
Test the configuration file is parsed correctly.
"""
workdir = str(tmpdir)
search_path = str(tmpdir.mkdir('test'))
subfolder = str(tmpdir.mkdir('test/subfolder'))
try:
# Write matching topologies
for basepath, matches in ((search_path, TOPOLOGY_MATCHES),
(subfolder, TOPOLOGY_MATCHES_FOLDER)):
for count, content in matches.items():
output_filename = join(
basepath, 'test_topology_match_{}.py'.format(count))
with open(output_filename, 'w') as fd:
fd.write('TOPOLOGY = """\n')
fd.write(content)
fd.write('"""')
# Write the attributes injection file
injection_path = join(workdir, 'attributes_injection.json')
with open(injection_path, 'w') as fd:
fd.write(INJECTION_FILE.format(search_path=search_path))
# Change keys of the expected parsed injection file
expected = OrderedDict()
for key, value in EXPECTED_PARSED_INJECTION_FILE.items():
expected[key.format(search_path=search_path)] = value
# Actually parse the injection file
actual = parse_attribute_injection(injection_path,
search_paths=[search_path])
# Compare the actual and the expected
differences = DeepDiff(actual, expected)
assert not differences
# Test building with injected attributes
injected_attributes = actual['{search_path}/test_topology_match_0.py'.
format(search_path=search_path)]
topology = TopologyManager()
topology.parse(TOPOLOGY_TO_BUILD, inject=injected_attributes)
topology.build()
sw9 = topology.get('sw9')
sw2 = topology.get('sw2')
sw8 = topology.get('sw8')
hs3 = topology.get('hs3')
hs2 = topology.get('hs2')
assert sw9.metadata == {'shell': 'vtysh', 'name': 'Switch 9'}
assert sw2.metadata == {
'image': 'image_for_sw2',
'shell': 'vtysh',
'name': 'new_name'
}
assert sw8.metadata == {
'type': 'switch',
'name': 'Switch 8',
'chassis': 'chassis_for_sw8'
}
assert hs3.metadata == {'type': 'host', 'name': 'Host 3'}
assert hs2.metadata == {
'type': 'host',
'name': 'Host 2',
'image': 'image_for_all_hosts',
'hardware': 'hardware_for_sw1_sw3_hs1_hs2'
}
finally:
try:
rmtree(workdir)
except:
pass