build.main.Main.handle_interface_link_up() - Code Metrics - Inspection of "Improved unit test coverage" - kytos/topology - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#86)

unknown

created 2020-03-26 23:09 UTC

build.main.Main.handle_interface_link_up() A

↳ Parent: build.main

Complexity

Conditions

Size

Total Lines	13
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	9
nop	2
dl	0
loc	13
rs	9.95
c	0
b	0
f	0
ccs	8
cts	8
cp	1
crap	3

"""Main module of kytos/topology Kytos Network Application.

Manage the network topology
"""
from flask import jsonify, request

from kytos.core import KytosEvent, KytosNApp, log, rest
from kytos.core.helpers import listen_to
from kytos.core.interface import Interface
from kytos.core.link import Link
from kytos.core.switch import Switch
# from napps.kytos.topology import settings
from napps.kytos.topology.models import Topology


class Main(KytosNApp):  # pylint: disable=too-many-public-methods
    """Main class of kytos/topology NApp.

    This class is the entry point for this napp.
    """

    def setup(self):
        """Initialize the NApp's links list."""
        self.links = {}
        self.store_items = {}

        self.verify_storehouse('switches')
        self.verify_storehouse('interfaces')
        self.verify_storehouse('links')

    def execute(self):
        """Do nothing."""

    def shutdown(self):
        """Do nothing."""
        log.info('NApp kytos/topology shutting down.')

    def _get_link_or_create(self, endpoint_a, endpoint_b):
        new_link = Link(endpoint_a, endpoint_b)

        for link in self.links.values():
            if new_link == link:
                return link

        self.links[new_link.id] = new_link
        return new_link

    def _get_switches_dict(self):
        """Return a dictionary with the known switches."""
        return {'switches': {s.id: s.as_dict() for s in
                             self.controller.switches.values()}}

    def _get_links_dict(self):
        """Return a dictionary with the known links."""
        return {'links': {l.id: l.as_dict() for l in
                          self.links.values()}}

    def _get_topology_dict(self):
        """Return a dictionary with the known topology."""
        return {'topology': {**self._get_switches_dict(),
                             **self._get_links_dict()}}

    def _get_topology(self):
        """Return an object representing the topology."""
        return Topology(self.controller.switches, self.links)

    def _get_link_from_interface(self, interface):
        """Return the link of the interface, or None if it does not exist."""
        for link in self.links.values():
            if interface in (link.endpoint_a, link.endpoint_b):
                return link
        return None

    @rest('v3/')
    def get_topology(self):
        """Return the latest known topology.

        This topology is updated when there are network events.
        """
        return jsonify(self._get_topology_dict())

    # Switch related methods
    @rest('v3/switches')
    def get_switches(self):
        """Return a json with all the switches in the topology."""
        return jsonify(self._get_switches_dict())

    @rest('v3/switches/<dpid>/enable', methods=['POST'])
    def enable_switch(self, dpid):
        """Administratively enable a switch in the topology."""
        try:
            self.controller.switches[dpid].enable()
            return jsonify("Operation successful"), 201
        except KeyError:
            return jsonify("Switch not found"), 404

    @rest('v3/switches/<dpid>/disable', methods=['POST'])
    def disable_switch(self, dpid):
        """Administratively disable a switch in the topology."""
        try:
            self.controller.switches[dpid].disable()
            return jsonify("Operation successful"), 201
        except KeyError:
            return jsonify("Switch not found"), 404

    @rest('v3/switches/<dpid>/metadata')
    def get_switch_metadata(self, dpid):
        """Get metadata from a switch."""
        try:
            return jsonify({"metadata":
                            self.controller.switches[dpid].metadata}), 200
        except KeyError:
            return jsonify("Switch not found"), 404

    @rest('v3/switches/<dpid>/metadata', methods=['POST'])
    def add_switch_metadata(self, dpid):
        """Add metadata to a switch."""
        metadata = request.get_json()
        try:
            switch = self.controller.switches[dpid]
        except KeyError:
            return jsonify("Switch not found"), 404

        switch.extend_metadata(metadata)
        self.notify_metadata_changes(switch, 'added')
        return jsonify("Operation successful"), 201

    @rest('v3/switches/<dpid>/metadata/<key>', methods=['DELETE'])
    def delete_switch_metadata(self, dpid, key):
        """Delete metadata from a switch."""
        try:
            switch = self.controller.switches[dpid]
        except KeyError:
            return jsonify("Switch not found"), 404

        switch.remove_metadata(key)
        self.notify_metadata_changes(switch, 'removed')
        return jsonify("Operation successful"), 200

    # Interface related methods
    @rest('v3/interfaces')
    def get_interfaces(self):
        """Return a json with all the interfaces in the topology."""
        interfaces = {}
        switches = self._get_switches_dict()
        for switch in switches['switches'].values():
            for interface_id, interface in switch['interfaces'].items():
                interfaces[interface_id] = interface

        return jsonify({'interfaces': interfaces})

    @rest('v3/interfaces/<interface_id>/enable', methods=['POST'])

    def enable_interface(self, interface_id):
        """Administratively enable an interface in the topology."""
        switch_id = ":".join(interface_id.split(":")[:-1])
        interface_number = int(interface_id.split(":")[-1])

        try:
            switch = self.controller.switches[switch_id]
        except KeyError:
            return jsonify("Switch not found"), 404

        try:
            switch.interfaces[interface_number].enable()
        except KeyError:
            return jsonify("Interface not found"), 404

        return jsonify("Operation successful"), 201

    @rest('v3/interfaces/<interface_id>/disable', methods=['POST'])

    def disable_interface(self, interface_id):
        """Administratively disable an interface in the topology."""
        switch_id = ":".join(interface_id.split(":")[:-1])
        interface_number = int(interface_id.split(":")[-1])

        try:
            switch = self.controller.switches[switch_id]
        except KeyError:
            return jsonify("Switch not found"), 404

        try:
            switch.interfaces[interface_number].disable()
        except KeyError:
            return jsonify("Interface not found"), 404

        return jsonify("Operation successful"), 201

    @rest('v3/interfaces/<interface_id>/metadata')
    def get_interface_metadata(self, interface_id):
        """Get metadata from an interface."""
        switch_id = ":".join(interface_id.split(":")[:-1])
        interface_number = int(interface_id.split(":")[-1])
        try:
            switch = self.controller.switches[switch_id]
        except KeyError:
            return jsonify("Switch not found"), 404

        try:
            interface = switch.interfaces[interface_number]
        except KeyError:
            return jsonify("Interface not found"), 404

        return jsonify({"metadata": interface.metadata}), 200

    @rest('v3/interfaces/<interface_id>/metadata', methods=['POST'])
    def add_interface_metadata(self, interface_id):
        """Add metadata to an interface."""
        metadata = request.get_json()

        switch_id = ":".join(interface_id.split(":")[:-1])
        interface_number = int(interface_id.split(":")[-1])
        try:
            switch = self.controller.switches[switch_id]
        except KeyError:
            return jsonify("Switch not found"), 404

        try:
            interface = switch.interfaces[interface_number]
        except KeyError:
            return jsonify("Interface not found"), 404

        interface.extend_metadata(metadata)
        self.notify_metadata_changes(interface, 'added')
        return jsonify("Operation successful"), 201

    @rest('v3/interfaces/<interface_id>/metadata/<key>', methods=['DELETE'])
    def delete_interface_metadata(self, interface_id, key):
        """Delete metadata from an interface."""
        switch_id = ":".join(interface_id.split(":")[:-1])
        interface_number = int(interface_id.split(":")[-1])

        try:
            switch = self.controller.switches[switch_id]
        except KeyError:
            return jsonify("Switch not found"), 404

        try:
            interface = switch.interfaces[interface_number]
        except KeyError:
            return jsonify("Interface not found"), 404

        if interface.remove_metadata(key) is False:
            return jsonify("Metadata not found"), 404

        self.notify_metadata_changes(interface, 'removed')
        return jsonify("Operation successful"), 200

    # Link related methods
    @rest('v3/links')
    def get_links(self):
        """Return a json with all the links in the topology.

        Links are connections between interfaces.
        """
        return jsonify(self._get_links_dict()), 200

    @rest('v3/links/<link_id>/enable', methods=['POST'])
    def enable_link(self, link_id):
        """Administratively enable a link in the topology."""
        try:
            self.links[link_id].enable()
        except KeyError:
            return jsonify("Link not found"), 404

        return jsonify("Operation successful"), 201

    @rest('v3/links/<link_id>/disable', methods=['POST'])
    def disable_link(self, link_id):
        """Administratively disable a link in the topology."""
        try:
            self.links[link_id].disable()
        except KeyError:
            return jsonify("Link not found"), 404

        return jsonify("Operation successful"), 201

    @rest('v3/links/<link_id>/metadata')
    def get_link_metadata(self, link_id):
        """Get metadata from a link."""
        try:
            return jsonify({"metadata": self.links[link_id].metadata}), 200
        except KeyError:
            return jsonify("Link not found"), 404

    @rest('v3/links/<link_id>/metadata', methods=['POST'])
    def add_link_metadata(self, link_id):
        """Add metadata to a link."""
        metadata = request.get_json()
        try:
            link = self.links[link_id]
        except KeyError:
            return jsonify("Link not found"), 404

        link.extend_metadata(metadata)
        self.notify_metadata_changes(link, 'added')
        return jsonify("Operation successful"), 201

    @rest('v3/links/<link_id>/metadata/<key>', methods=['DELETE'])
    def delete_link_metadata(self, link_id, key):
        """Delete metadata from a link."""
        try:
            link = self.links[link_id]
        except KeyError:
            return jsonify("Link not found"), 404

        if link.remove_metadata(key) is False:
            return jsonify("Metadata not found"), 404

        self.notify_metadata_changes(link, 'removed')
        return jsonify("Operation successful"), 200

    @listen_to('.*.switch.(new|reconnected)')
    def handle_new_switch(self, event):
        """Create a new Device on the Topology.

        Handle the event of a new created switch and update the topology with
        this new device.
        """
        switch = event.content['switch']
        switch.activate()
        log.debug('Switch %s added to the Topology.', switch.id)
        self.notify_topology_update()
        self.update_instance_metadata(switch)

    @listen_to('.*.connection.lost')
    def handle_connection_lost(self, event):
        """Remove a Device from the topology.

        Remove the disconnected Device and every link that has one of its
        interfaces.
        """
        switch = event.content['source'].switch
        if switch:
            switch.deactivate()
            log.debug('Switch %s removed from the Topology.', switch.id)
            self.notify_topology_update()

    def handle_interface_up(self, event):
        """Update the topology based on a Port Modify event.

        The event notifies that an interface was changed to 'up'.
        """
        interface = event.content['interface']
        interface.activate()
        self.notify_topology_update()
        self.update_instance_metadata(interface)

    @listen_to('.*.switch.interface.created')
    def handle_interface_created(self, event):
        """Update the topology based on a Port Create event."""
        self.handle_interface_up(event)

    def handle_interface_down(self, event):
        """Update the topology based on a Port Modify event.

        The event notifies that an interface was changed to 'down'.
        """
        interface = event.content['interface']
        interface.deactivate()
        self.handle_interface_link_down(event)
        self.notify_topology_update()

    @listen_to('.*.switch.interface.deleted')
    def handle_interface_deleted(self, event):
        """Update the topology based on a Port Delete event."""
        self.handle_interface_down(event)

    @listen_to('.*.switch.interface.link_up')
    def handle_interface_link_up(self, event):
        """Update the topology based on a Port Modify event.

        The event notifies that an interface's link was changed to 'up'.
        """
        interface = event.content['interface']
        link = self._get_link_from_interface(interface)
        if link and not link.is_active():
            link.activate()
            self.notify_topology_update()
            self.update_instance_metadata(interface.link)
            self.notify_link_status_change(link)

    @listen_to('.*.switch.interface.link_down')
    def handle_interface_link_down(self, event):
        """Update the topology based on a Port Modify event.

        The event notifies that an interface's link was changed to 'down'.
        """
        interface = event.content['interface']
        link = self._get_link_from_interface(interface)
        if link and link.is_active():
            link.deactivate()
            self.notify_topology_update()
            self.notify_link_status_change(link)

    @listen_to('.*.interface.is.nni')
    def add_links(self, event):
        """Update the topology with links related to the NNI interfaces."""
        interface_a = event.content['interface_a']
        interface_b = event.content['interface_b']

        link = self._get_link_or_create(interface_a, interface_b)
        interface_a.update_link(link)
        interface_b.update_link(link)

        interface_a.nni = True
        interface_b.nni = True

        self.notify_topology_update()

    # def add_host(self, event):
    #    """Update the topology with a new Host."""

    #    interface = event.content['port']
    #    mac = event.content['reachable_mac']

    #    host = Host(mac)
    #    link = self.topology.get_link(interface.id)
    #    if link is not None:
    #        return

    #    self.topology.add_link(interface.id, host.id)
    #    self.topology.add_device(host)

    #    if settings.DISPLAY_FULL_DUPLEX_LINKS:
    #        self.topology.add_link(host.id, interface.id)

    def notify_topology_update(self):
        """Send an event to notify about updates on the topology."""
        name = 'kytos/topology.updated'
        event = KytosEvent(name=name, content={'topology':
                                               self._get_topology()})
        self.controller.buffers.app.put(event)

    def notify_link_status_change(self, link):
        """Send an event to notify about a status change on a link."""
        name = 'kytos/topology.'
        if link.is_active():
            status = 'link_up'
        else:
            status = 'link_down'
        event = KytosEvent(name=name+status, content={'link': link})
        self.controller.buffers.app.put(event)

    def notify_metadata_changes(self, obj, action):
        """Send an event to notify about metadata changes."""
        if isinstance(obj, Switch):
            entity = 'switch'
            entities = 'switches'
        elif isinstance(obj, Interface):
            entity = 'interface'
            entities = 'interfaces'
        elif isinstance(obj, Link):
            entity = 'link'
            entities = 'links'

        name = f'kytos/topology.{entities}.metadata.{action}'
        event = KytosEvent(name=name, content={entity: obj,

                                               'metadata': obj.metadata})
        self.controller.buffers.app.put(event)
        log.debug(f'Metadata from {obj.id} was {action}.')

    @listen_to('.*.switch.port.created')
    def notify_port_created(self, original_event):
        """Notify when a port is created."""
        name = f'kytos/topology.port.created'
        event = KytosEvent(name=name, content=original_event.content)
        self.controller.buffers.app.put(event)

    @listen_to('kytos/topology.*.metadata.*')
    def save_metadata_on_store(self, event):
        """Send to storehouse the data updated."""
        name = 'kytos.storehouse.update'
        if 'switch' in event.content:
            store = self.store_items.get('switches')
            obj = event.content.get('switch')
            namespace = 'kytos.topology.switches.metadata'
        elif 'interface' in event.content:
            store = self.store_items.get('interfaces')
            obj = event.content.get('interface')
            namespace = 'kytos.topology.iterfaces.metadata'
        elif 'link' in event.content:
            store = self.store_items.get('links')
            obj = event.content.get('link')
            namespace = 'kytos.topology.links.metadata'

        store.data[obj.id] = obj.metadata

        content = {'namespace': namespace,

                   'box_id': store.box_id,
                   'data': store.data,
                   'callback': self.update_instance}

        event = KytosEvent(name=name, content=content)
        self.controller.buffers.app.put(event)

    @staticmethod
    def update_instance(event, _data, error):
        """Display in Kytos console if the data was updated."""
        entities = event.content.get('namespace', '').split('.')[-2]
        if error:
            log.error(f'Error trying to update storehouse {entities}.')
        else:
            log.debug(f'Storehouse update to entities: {entities}.')

    def verify_storehouse(self, entities):
        """Request a list of box saved by specific entity."""
        name = 'kytos.storehouse.list'
        content = {'namespace': f'kytos.topology.{entities}.metadata',
                   'callback': self.request_retrieve_entities}
        event = KytosEvent(name=name, content=content)
        self.controller.buffers.app.put(event)
        log.info(f'verify data in storehouse for {entities}.')

    def request_retrieve_entities(self, event, data, _error):
        """Create a box or retrieve an existent box from storehouse."""
        msg = ''
        content = {'namespace': event.content.get('namespace'),
                   'callback': self.load_from_store,
                   'data': {}}

        if not data:
            name = 'kytos.storehouse.create'
            msg = 'Create new box in storehouse'
        else:
            name = 'kytos.storehouse.retrieve'
            content['box_id'] = data[0]
            msg = 'Retrieve data from storeohouse.'

        event = KytosEvent(name=name, content=content)
        self.controller.buffers.app.put(event)
        log.debug(msg)

    def load_from_store(self, event, box, error):
        """Save the data retrived from storehouse."""
        entities = event.content.get('namespace', '').split('.')[-2]
        if error:
            log.error('Error while get a box from storehouse.')
        else:
            self.store_items[entities] = box
            log.debug('Data updated')

    def update_instance_metadata(self, obj):
        """Update object instance with saved metadata."""
        metadata = None
        if isinstance(obj, Interface):
            all_metadata = self.store_items.get('interfaces', None)
            if all_metadata:
                metadata = all_metadata.data.get(obj.id)
        elif isinstance(obj, Switch):
            all_metadata = self.store_items.get('switches', None)
            if all_metadata:
                metadata = all_metadata.data.get(obj.id)
        elif isinstance(obj, Link):
            all_metadata = self.store_items.get('links', None)
            if all_metadata:
                metadata = all_metadata.data.get(obj.id)

        if metadata:
            obj.extend_metadata(metadata)
            log.debug(f'Metadata to {obj.id} was updated')


1			"""Main module of kytos/topology Kytos Network Application.
2
3			Manage the network topology
4			"""
5	1		from flask import jsonify, request
6
7	1		from kytos.core import KytosEvent, KytosNApp, log, rest
8	1		from kytos.core.helpers import listen_to
9	1		from kytos.core.interface import Interface
10	1		from kytos.core.link import Link
11	1		from kytos.core.switch import Switch
12			# from napps.kytos.topology import settings
13	1		from napps.kytos.topology.models import Topology
14
15
16	1		class Main(KytosNApp): # pylint: disable=too-many-public-methods
17			"""Main class of kytos/topology NApp.
18
19			This class is the entry point for this napp.
20			"""
21
22	1		def setup(self):
23			"""Initialize the NApp's links list."""
24	1		self.links = {}
25	1		self.store_items = {}
26
27	1		self.verify_storehouse('switches')
28	1		self.verify_storehouse('interfaces')
29	1		self.verify_storehouse('links')
30
31	1		def execute(self):
32			"""Do nothing."""
33
34	1		def shutdown(self):
35			"""Do nothing."""
36			log.info('NApp kytos/topology shutting down.')
37
38	1		def _get_link_or_create(self, endpoint_a, endpoint_b):
39			new_link = Link(endpoint_a, endpoint_b)
40
41			for link in self.links.values():
42			if new_link == link:
43			return link
44
45			self.links[new_link.id] = new_link
46			return new_link
47
48	1		def _get_switches_dict(self):
49			"""Return a dictionary with the known switches."""
50			return {'switches': {s.id: s.as_dict() for s in
51			self.controller.switches.values()}}
52
53	1		def _get_links_dict(self):
54			"""Return a dictionary with the known links."""
55			return {'links': {l.id: l.as_dict() for l in
56			self.links.values()}}
57
58	1		def _get_topology_dict(self):
59			"""Return a dictionary with the known topology."""
60			return {'topology': {**self._get_switches_dict(),
61			**self._get_links_dict()}}
62
63	1		def _get_topology(self):
64			"""Return an object representing the topology."""
65			return Topology(self.controller.switches, self.links)
66
67	1		def _get_link_from_interface(self, interface):
68			"""Return the link of the interface, or None if it does not exist."""
69			for link in self.links.values():
70			if interface in (link.endpoint_a, link.endpoint_b):
71			return link
72			return None
73
74	1		@rest('v3/')
75			def get_topology(self):
76			"""Return the latest known topology.
77
78			This topology is updated when there are network events.
79			"""
80			return jsonify(self._get_topology_dict())
81
82			# Switch related methods
83	1		@rest('v3/switches')
84			def get_switches(self):
85			"""Return a json with all the switches in the topology."""
86			return jsonify(self._get_switches_dict())
87
88	1		@rest('v3/switches/<dpid>/enable', methods=['POST'])
89			def enable_switch(self, dpid):
90			"""Administratively enable a switch in the topology."""
91			try:
92			self.controller.switches[dpid].enable()
93			return jsonify("Operation successful"), 201
94			except KeyError:
95			return jsonify("Switch not found"), 404
96
97	1		@rest('v3/switches/<dpid>/disable', methods=['POST'])
98			def disable_switch(self, dpid):
99			"""Administratively disable a switch in the topology."""
100			try:
101			self.controller.switches[dpid].disable()
102			return jsonify("Operation successful"), 201
103			except KeyError:
104			return jsonify("Switch not found"), 404
105
106	1		@rest('v3/switches/<dpid>/metadata')
107			def get_switch_metadata(self, dpid):
108			"""Get metadata from a switch."""
109			try:
110			return jsonify({"metadata":
111			self.controller.switches[dpid].metadata}), 200
112			except KeyError:
113			return jsonify("Switch not found"), 404
114
115	1		@rest('v3/switches/<dpid>/metadata', methods=['POST'])
116			def add_switch_metadata(self, dpid):
117			"""Add metadata to a switch."""
118			metadata = request.get_json()
119			try:
120			switch = self.controller.switches[dpid]
121			except KeyError:
122			return jsonify("Switch not found"), 404
123
124			switch.extend_metadata(metadata)
125			self.notify_metadata_changes(switch, 'added')
126			return jsonify("Operation successful"), 201
127
128	1		@rest('v3/switches/<dpid>/metadata/<key>', methods=['DELETE'])
129			def delete_switch_metadata(self, dpid, key):
130			"""Delete metadata from a switch."""
131			try:
132			switch = self.controller.switches[dpid]
133			except KeyError:
134			return jsonify("Switch not found"), 404
135
136			switch.remove_metadata(key)
137			self.notify_metadata_changes(switch, 'removed')
138			return jsonify("Operation successful"), 200
139
140			# Interface related methods
141	1		@rest('v3/interfaces')
142			def get_interfaces(self):
143			"""Return a json with all the interfaces in the topology."""
144			interfaces = {}
145			switches = self._get_switches_dict()
146			for switch in switches['switches'].values():
147			for interface_id, interface in switch['interfaces'].items():
148			interfaces[interface_id] = interface
149
150			return jsonify({'interfaces': interfaces})
151
152	1	View Code Duplication	@rest('v3/interfaces/<interface_id>/enable', methods=['POST'])
			0 ignored issues – show Duplication introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
153			def enable_interface(self, interface_id):
154			"""Administratively enable an interface in the topology."""
155			switch_id = ":".join(interface_id.split(":")[:-1])
156			interface_number = int(interface_id.split(":")[-1])
157
158			try:
159			switch = self.controller.switches[switch_id]
160			except KeyError:
161			return jsonify("Switch not found"), 404
162
163			try:
164			switch.interfaces[interface_number].enable()
165			except KeyError:
166			return jsonify("Interface not found"), 404
167
168			return jsonify("Operation successful"), 201
169
170	1	View Code Duplication	@rest('v3/interfaces/<interface_id>/disable', methods=['POST'])
			0 ignored issues – show Duplication introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
171			def disable_interface(self, interface_id):
172			"""Administratively disable an interface in the topology."""
173			switch_id = ":".join(interface_id.split(":")[:-1])
174			interface_number = int(interface_id.split(":")[-1])
175
176			try:
177			switch = self.controller.switches[switch_id]
178			except KeyError:
179			return jsonify("Switch not found"), 404
180
181			try:
182			switch.interfaces[interface_number].disable()
183			except KeyError:
184			return jsonify("Interface not found"), 404
185
186			return jsonify("Operation successful"), 201
187
188	1		@rest('v3/interfaces/<interface_id>/metadata')
189			def get_interface_metadata(self, interface_id):
190			"""Get metadata from an interface."""
191			switch_id = ":".join(interface_id.split(":")[:-1])
192			interface_number = int(interface_id.split(":")[-1])
193			try:
194			switch = self.controller.switches[switch_id]
195			except KeyError:
196			return jsonify("Switch not found"), 404
197
198			try:
199			interface = switch.interfaces[interface_number]
200			except KeyError:
201			return jsonify("Interface not found"), 404
202
203			return jsonify({"metadata": interface.metadata}), 200
204
205	1		@rest('v3/interfaces/<interface_id>/metadata', methods=['POST'])
206			def add_interface_metadata(self, interface_id):
207			"""Add metadata to an interface."""
208			metadata = request.get_json()
209
210			switch_id = ":".join(interface_id.split(":")[:-1])
211			interface_number = int(interface_id.split(":")[-1])
212			try:
213			switch = self.controller.switches[switch_id]
214			except KeyError:
215			return jsonify("Switch not found"), 404
216
217			try:
218			interface = switch.interfaces[interface_number]
219			except KeyError:
220			return jsonify("Interface not found"), 404
221
222			interface.extend_metadata(metadata)
223			self.notify_metadata_changes(interface, 'added')
224			return jsonify("Operation successful"), 201
225
226	1		@rest('v3/interfaces/<interface_id>/metadata/<key>', methods=['DELETE'])
227			def delete_interface_metadata(self, interface_id, key):
228			"""Delete metadata from an interface."""
229			switch_id = ":".join(interface_id.split(":")[:-1])
230			interface_number = int(interface_id.split(":")[-1])
231
232			try:
233			switch = self.controller.switches[switch_id]
234			except KeyError:
235			return jsonify("Switch not found"), 404
236
237			try:
238			interface = switch.interfaces[interface_number]
239			except KeyError:
240			return jsonify("Interface not found"), 404
241
242			if interface.remove_metadata(key) is False:
243			return jsonify("Metadata not found"), 404
244
245			self.notify_metadata_changes(interface, 'removed')
246			return jsonify("Operation successful"), 200
247
248			# Link related methods
249	1		@rest('v3/links')
250			def get_links(self):
251			"""Return a json with all the links in the topology.
252
253			Links are connections between interfaces.
254			"""
255			return jsonify(self._get_links_dict()), 200
256
257	1		@rest('v3/links/<link_id>/enable', methods=['POST'])
258			def enable_link(self, link_id):
259			"""Administratively enable a link in the topology."""
260			try:
261			self.links[link_id].enable()
262			except KeyError:
263			return jsonify("Link not found"), 404
264
265			return jsonify("Operation successful"), 201
266
267	1		@rest('v3/links/<link_id>/disable', methods=['POST'])
268			def disable_link(self, link_id):
269			"""Administratively disable a link in the topology."""
270			try:
271			self.links[link_id].disable()
272			except KeyError:
273			return jsonify("Link not found"), 404
274
275			return jsonify("Operation successful"), 201
276
277	1		@rest('v3/links/<link_id>/metadata')
278			def get_link_metadata(self, link_id):
279			"""Get metadata from a link."""
280			try:
281			return jsonify({"metadata": self.links[link_id].metadata}), 200
282			except KeyError:
283			return jsonify("Link not found"), 404
284
285	1		@rest('v3/links/<link_id>/metadata', methods=['POST'])
286			def add_link_metadata(self, link_id):
287			"""Add metadata to a link."""
288			metadata = request.get_json()
289			try:
290			link = self.links[link_id]
291			except KeyError:
292			return jsonify("Link not found"), 404
293
294			link.extend_metadata(metadata)
295			self.notify_metadata_changes(link, 'added')
296			return jsonify("Operation successful"), 201
297
298	1		@rest('v3/links/<link_id>/metadata/<key>', methods=['DELETE'])
299			def delete_link_metadata(self, link_id, key):
300			"""Delete metadata from a link."""
301			try:
302			link = self.links[link_id]
303			except KeyError:
304			return jsonify("Link not found"), 404
305
306			if link.remove_metadata(key) is False:
307			return jsonify("Metadata not found"), 404
308
309			self.notify_metadata_changes(link, 'removed')
310			return jsonify("Operation successful"), 200
311
312	1		@listen_to('.*.switch.(new\|reconnected)')
313			def handle_new_switch(self, event):
314			"""Create a new Device on the Topology.
315
316			Handle the event of a new created switch and update the topology with
317			this new device.
318			"""
319	1		switch = event.content['switch']
320	1		switch.activate()
321	1		log.debug('Switch %s added to the Topology.', switch.id)
322	1		self.notify_topology_update()
323	1		self.update_instance_metadata(switch)
324
325	1		@listen_to('.*.connection.lost')
326			def handle_connection_lost(self, event):
327			"""Remove a Device from the topology.
328
329			Remove the disconnected Device and every link that has one of its
330			interfaces.
331			"""
332	1		switch = event.content['source'].switch
333	1		if switch:
334	1		switch.deactivate()
335	1		log.debug('Switch %s removed from the Topology.', switch.id)
336	1		self.notify_topology_update()
337
338	1		def handle_interface_up(self, event):
339			"""Update the topology based on a Port Modify event.
340
341			The event notifies that an interface was changed to 'up'.
342			"""
343	1		interface = event.content['interface']
344	1		interface.activate()
345	1		self.notify_topology_update()
346	1		self.update_instance_metadata(interface)
347
348	1		@listen_to('.*.switch.interface.created')
349			def handle_interface_created(self, event):
350			"""Update the topology based on a Port Create event."""
351	1		self.handle_interface_up(event)
352
353	1		def handle_interface_down(self, event):
354			"""Update the topology based on a Port Modify event.
355
356			The event notifies that an interface was changed to 'down'.
357			"""
358	1		interface = event.content['interface']
359	1		interface.deactivate()
360	1		self.handle_interface_link_down(event)
361	1		self.notify_topology_update()
362
363	1		@listen_to('.*.switch.interface.deleted')
364			def handle_interface_deleted(self, event):
365			"""Update the topology based on a Port Delete event."""
366	1		self.handle_interface_down(event)
367
368	1		@listen_to('.*.switch.interface.link_up')
369			def handle_interface_link_up(self, event):
370			"""Update the topology based on a Port Modify event.
371
372			The event notifies that an interface's link was changed to 'up'.
373			"""
374	1		interface = event.content['interface']
375	1		link = self._get_link_from_interface(interface)
376	1		if link and not link.is_active():
377	1		link.activate()
378	1		self.notify_topology_update()
379	1		self.update_instance_metadata(interface.link)
380	1		self.notify_link_status_change(link)
381
382	1		@listen_to('.*.switch.interface.link_down')
383			def handle_interface_link_down(self, event):
384			"""Update the topology based on a Port Modify event.
385
386			The event notifies that an interface's link was changed to 'down'.
387			"""
388	1		interface = event.content['interface']
389	1		link = self._get_link_from_interface(interface)
390	1		if link and link.is_active():
391	1		link.deactivate()
392	1		self.notify_topology_update()
393	1		self.notify_link_status_change(link)
394
395	1		@listen_to('.*.interface.is.nni')
396			def add_links(self, event):
397			"""Update the topology with links related to the NNI interfaces."""
398			interface_a = event.content['interface_a']
399			interface_b = event.content['interface_b']
400
401			link = self._get_link_or_create(interface_a, interface_b)
402			interface_a.update_link(link)
403			interface_b.update_link(link)
404
405			interface_a.nni = True
406			interface_b.nni = True
407
408			self.notify_topology_update()
409
410			# def add_host(self, event):
411			# """Update the topology with a new Host."""
412
413			# interface = event.content['port']
414			# mac = event.content['reachable_mac']
415
416			# host = Host(mac)
417			# link = self.topology.get_link(interface.id)
418			# if link is not None:
419			# return
420
421			# self.topology.add_link(interface.id, host.id)
422			# self.topology.add_device(host)
423
424			# if settings.DISPLAY_FULL_DUPLEX_LINKS:
425			# self.topology.add_link(host.id, interface.id)
426
427	1		def notify_topology_update(self):
428			"""Send an event to notify about updates on the topology."""
429			name = 'kytos/topology.updated'
430			event = KytosEvent(name=name, content={'topology':
431			self._get_topology()})
432			self.controller.buffers.app.put(event)
433
434	1		def notify_link_status_change(self, link):
435			"""Send an event to notify about a status change on a link."""
436			name = 'kytos/topology.'
437			if link.is_active():
438			status = 'link_up'
439			else:
440			status = 'link_down'
441			event = KytosEvent(name=name+status, content={'link': link})
442			self.controller.buffers.app.put(event)
443
444	1		def notify_metadata_changes(self, obj, action):
445			"""Send an event to notify about metadata changes."""
446			if isinstance(obj, Switch):
447			entity = 'switch'
448			entities = 'switches'
449			elif isinstance(obj, Interface):
450			entity = 'interface'
451			entities = 'interfaces'
452			elif isinstance(obj, Link):
453			entity = 'link'
454			entities = 'links'
455
456			name = f'kytos/topology.{entities}.metadata.{action}'
457			event = KytosEvent(name=name, content={entity: obj,
			0 ignored issues – show introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report The variable `entity` does not seem to be defined for all execution paths. Loading history...
458			'metadata': obj.metadata})
459			self.controller.buffers.app.put(event)
460			log.debug(f'Metadata from {obj.id} was {action}.')
461
462	1		@listen_to('.*.switch.port.created')
463			def notify_port_created(self, original_event):
464			"""Notify when a port is created."""
465			name = f'kytos/topology.port.created'
466			event = KytosEvent(name=name, content=original_event.content)
467			self.controller.buffers.app.put(event)
468
469	1		@listen_to('kytos/topology..metadata.')
470			def save_metadata_on_store(self, event):
471			"""Send to storehouse the data updated."""
472			name = 'kytos.storehouse.update'
473			if 'switch' in event.content:
474			store = self.store_items.get('switches')
475			obj = event.content.get('switch')
476			namespace = 'kytos.topology.switches.metadata'
477			elif 'interface' in event.content:
478			store = self.store_items.get('interfaces')
479			obj = event.content.get('interface')
480			namespace = 'kytos.topology.iterfaces.metadata'
481			elif 'link' in event.content:
482			store = self.store_items.get('links')
483			obj = event.content.get('link')
484			namespace = 'kytos.topology.links.metadata'
485
486			store.data[obj.id] = obj.metadata
			0 ignored issues – show introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report The variable `store` does not seem to be defined for all execution paths. Loading history... introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report The variable `obj` does not seem to be defined for all execution paths. Loading history...
487			content = {'namespace': namespace,
			0 ignored issues – show introduced 2019-02-27 14:03 UTC by Report Bug Copy Issue Report The variable `namespace` does not seem to be defined for all execution paths. Loading history...
488			'box_id': store.box_id,
489			'data': store.data,
490			'callback': self.update_instance}
491
492			event = KytosEvent(name=name, content=content)
493			self.controller.buffers.app.put(event)
494
495	1		@staticmethod
496			def update_instance(event, _data, error):
497			"""Display in Kytos console if the data was updated."""
498			entities = event.content.get('namespace', '').split('.')[-2]
499			if error:
500			log.error(f'Error trying to update storehouse {entities}.')
501			else:
502			log.debug(f'Storehouse update to entities: {entities}.')
503
504	1		def verify_storehouse(self, entities):
505			"""Request a list of box saved by specific entity."""
506	1		name = 'kytos.storehouse.list'
507	1		content = {'namespace': f'kytos.topology.{entities}.metadata',
508			'callback': self.request_retrieve_entities}
509	1		event = KytosEvent(name=name, content=content)
510	1		self.controller.buffers.app.put(event)
511	1		log.info(f'verify data in storehouse for {entities}.')
512
513	1		def request_retrieve_entities(self, event, data, _error):
514			"""Create a box or retrieve an existent box from storehouse."""
515			msg = ''
516			content = {'namespace': event.content.get('namespace'),
517			'callback': self.load_from_store,
518			'data': {}}
519
520			if not data:
521			name = 'kytos.storehouse.create'
522			msg = 'Create new box in storehouse'
523			else:
524			name = 'kytos.storehouse.retrieve'
525			content['box_id'] = data[0]
526			msg = 'Retrieve data from storeohouse.'
527
528			event = KytosEvent(name=name, content=content)
529			self.controller.buffers.app.put(event)
530			log.debug(msg)
531
532	1		def load_from_store(self, event, box, error):
533			"""Save the data retrived from storehouse."""
534			entities = event.content.get('namespace', '').split('.')[-2]
535			if error:
536			log.error('Error while get a box from storehouse.')
537			else:
538			self.store_items[entities] = box
539			log.debug('Data updated')
540
541	1		def update_instance_metadata(self, obj):
542			"""Update object instance with saved metadata."""
543			metadata = None
544			if isinstance(obj, Interface):
545			all_metadata = self.store_items.get('interfaces', None)
546			if all_metadata:
547			metadata = all_metadata.data.get(obj.id)
548			elif isinstance(obj, Switch):
549			all_metadata = self.store_items.get('switches', None)
550			if all_metadata:
551			metadata = all_metadata.data.get(obj.id)
552			elif isinstance(obj, Link):
553			all_metadata = self.store_items.get('links', None)
554			if all_metadata:
555			metadata = all_metadata.data.get(obj.id)
556
557			if metadata:
558			obj.extend_metadata(metadata)
559			log.debug(f'Metadata to {obj.id} was updated')
560

kytos / topology

Pull Request — master (#86)

build.main.Main.handle_interface_link_up() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like