Package net.floodlightcontroller.routing

Examples of net.floodlightcontroller.routing.Link

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            return Command.STOP;
        }

        // Store the time of update to this link, and push it out to
        // routingEngine
        Link lt = new Link(remoteSwitch.getId(), remotePort,
                           iofSwitch.getId(), inPort);

        if (!isLinkAllowed(lt.getSrc(), lt.getSrcPort(),
                           lt.getDst(), lt.getDstPort()))
            return Command.STOP;

        // Continue only if link is allowed.
        Long lastLldpTime = null;
        Long lastBddpTime = null;

        Long firstSeenTime = System.currentTimeMillis();

        if (isStandard)
            lastLldpTime = System.currentTimeMillis();
        else
            lastBddpTime = System.currentTimeMillis();

        LinkInfo newLinkInfo = new LinkInfo(firstSeenTime, lastLldpTime,
                                            lastBddpTime);

        addOrUpdateLink(lt, newLinkInfo);

        // Check if reverse link exists.
        // If it doesn't exist and if the forward link was seen
        // first seen within a small interval, send probe on the
        // reverse link.
        newLinkInfo = links.get(lt);
        if (newLinkInfo != null && isStandard && isReverse == false) {
            Link reverseLink = new Link(lt.getDst(), lt.getDstPort(),
                                        lt.getSrc(), lt.getSrcPort());
            LinkInfo reverseInfo = links.get(reverseLink);
            if (reverseInfo == null) {
                // the reverse link does not exist.
                if (newLinkInfo.getFirstSeenTime() > System.currentTimeMillis()
                                                     - LINK_TIMEOUT) {
                    this.sendDiscoveryMessage(lt.getDst(), lt.getDstPort(),
                                              isStandard, true);
                }
            }
        }

        // If the received packet is a BDDP packet, then create a reverse BDDP
        // link as well.
        if (!isStandard) {
            Link reverseLink = new Link(lt.getDst(), lt.getDstPort(),
                                        lt.getSrc(), lt.getSrcPort());

            // srcPortState and dstPort state are reversed.
            LinkInfo reverseInfo = new LinkInfo(firstSeenTime, lastLldpTime,
                                                lastBddpTime);
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        try {
            Iterator<Entry<Link, LinkInfo>> it = this.links.entrySet()
                                                           .iterator();
            while (it.hasNext()) {
                Entry<Link, LinkInfo> entry = it.next();
                Link lt = entry.getKey();
                LinkInfo info = entry.getValue();

                // Timeout the unicast and multicast LLDP valid times
                // independently.
                if ((info.getUnicastValidTime() != null)
                    && (info.getUnicastValidTime()
                        + (this.LINK_TIMEOUT * 1000) < curTime)) {
                    info.setUnicastValidTime(null);
                    linkChanged = true;
                }
                if ((info.getMulticastValidTime() != null)
                    && (info.getMulticastValidTime()
                        + (this.LINK_TIMEOUT * 1000) < curTime)) {
                    info.setMulticastValidTime(null);
                    linkChanged = true;
                }
                // Add to the erase list only if the unicast
                // time is null.
                if (info.getUnicastValidTime() == null
                    && info.getMulticastValidTime() == null) {
                    eraseList.add(entry.getKey());
                } else if (linkChanged) {
                    updates.add(new LDUpdate(lt.getSrc(), lt.getSrcPort(),
                                             lt.getDst(), lt.getDstPort(),
                                             getLinkType(lt, info),
                                             UpdateOperation.LINK_UPDATED));
                }
            }

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    @Test
    public void testAddOrUpdateLink() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 2, 2L, 1);
        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);


        NodePortTuple srcNpt = new NodePortTuple(1L, 2);
        NodePortTuple dstNpt = new NodePortTuple(2L, 1);

        // check invariants hold
        assertNotNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertTrue(linkDiscovery.switchLinks.get(lt.getSrc()).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(srcNpt));
        assertTrue(linkDiscovery.portLinks.get(srcNpt).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.portLinks.get(dstNpt).contains(lt));
        assertTrue(linkDiscovery.links.containsKey(lt));
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    @Test
    public void testDeleteLink() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 2, 2L, 1);
        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);
        linkDiscovery.deleteLinks(Collections.singletonList(lt), "Test");

        // check invariants hold
        assertNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.switchLinks.get(lt.getDst()));
        assertNull(linkDiscovery.portLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.portLinks.get(lt.getDst()));
        assertTrue(linkDiscovery.links.isEmpty());
    }
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    @Test
    public void testAddOrUpdateLinkToSelf() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 2, 2L, 3);
        NodePortTuple srcNpt = new NodePortTuple(1L, 2);
        NodePortTuple dstNpt = new NodePortTuple(2L, 3);

        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);

        // check invariants hold
        assertNotNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertTrue(linkDiscovery.switchLinks.get(lt.getSrc()).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(srcNpt));
        assertTrue(linkDiscovery.portLinks.get(srcNpt).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.portLinks.get(dstNpt).contains(lt));
        assertTrue(linkDiscovery.links.containsKey(lt));
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    @Test
    public void testDeleteLinkToSelf() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 2, 1L, 3);
        NodePortTuple srcNpt = new NodePortTuple(1L, 2);
        NodePortTuple dstNpt = new NodePortTuple(2L, 3);

        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);
        linkDiscovery.deleteLinks(Collections.singletonList(lt), "Test to self");

        // check invariants hold
        assertNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.switchLinks.get(lt.getDst()));
        assertNull(linkDiscovery.portLinks.get(srcNpt));
        assertNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.links.isEmpty());
    }
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    @Test
    public void testRemovedSwitch() {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 2, 2L, 1);
        NodePortTuple srcNpt = new NodePortTuple(1L, 2);
        NodePortTuple dstNpt = new NodePortTuple(2L, 1);
        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);

        IOFSwitch sw1 = getMockFloodlightProvider().getSwitch(1L);
        IOFSwitch sw2 = getMockFloodlightProvider().getSwitch(2L);
        // Mock up our expected behavior
        linkDiscovery.switchRemoved(sw1.getId());
        verify(sw1, sw2);

        // check invariants hold
        assertNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.switchLinks.get(lt.getDst()));
        assertNull(linkDiscovery.portLinks.get(srcNpt));
        assertNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.links.isEmpty());
    }
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    @Test
    public void testRemovedSwitchSelf() {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();
        IOFSwitch sw1 = createMockSwitch(1L);
        replay(sw1);
        Link lt = new Link(1L, 2, 1L, 3);
        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);

        // Mock up our expected behavior
        linkDiscovery.switchRemoved(sw1.getId());

        verify(sw1);
        // check invariants hold
        assertNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.portLinks.get(lt.getSrc()));
        assertNull(linkDiscovery.portLinks.get(lt.getDst()));
        assertTrue(linkDiscovery.links.isEmpty());
    }
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    @Test
    public void testAddUpdateLinks() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();

        Link lt = new Link(1L, 1, 2L, 1);
        NodePortTuple srcNpt = new NodePortTuple(1L, 1);
        NodePortTuple dstNpt = new NodePortTuple(2L, 1);

        LinkInfo info;

        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            System.currentTimeMillis() - 40000, null);
        linkDiscovery.addOrUpdateLink(lt, info);

        // check invariants hold
        assertNotNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertTrue(linkDiscovery.switchLinks.get(lt.getSrc()).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(srcNpt));
        assertTrue(linkDiscovery.portLinks.get(srcNpt).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.portLinks.get(dstNpt).contains(lt));
        assertTrue(linkDiscovery.links.containsKey(lt));

        linkDiscovery.timeoutLinks();


        info = new LinkInfo(System.currentTimeMillis(),/* firstseen */
                            null,/* unicast */
                            System.currentTimeMillis());
        linkDiscovery.addOrUpdateLink(lt, info);
        assertTrue(linkDiscovery.links.get(lt).getUnicastValidTime() == null);
        assertTrue(linkDiscovery.links.get(lt).getMulticastValidTime() != null);


        // Add a link info based on info that woudld be obtained from unicast LLDP
        // Setting the unicast LLDP reception time to be 40 seconds old, so we can use
        // this to test timeout after this test.  Although the info is initialized
        // with LT_OPENFLOW_LINK, the link property should be changed to LT_NON_OPENFLOW
        // by the addOrUpdateLink method.
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            System.currentTimeMillis() - 40000, null);
        linkDiscovery.addOrUpdateLink(lt, info);

        // Expect to timeout the unicast Valid Time, but not the multicast Valid time
        // So the link type should go back to non-openflow link.
        linkDiscovery.timeoutLinks();
        assertTrue(linkDiscovery.links.get(lt).getUnicastValidTime() == null);
        assertTrue(linkDiscovery.links.get(lt).getMulticastValidTime() != null);

        // Set the multicastValidTime to be old and see if that also times out.
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);
        linkDiscovery.timeoutLinks();
        assertTrue(linkDiscovery.links.get(lt) == null);

        // Test again only with multicast LLDP
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);
        assertTrue(linkDiscovery.links.get(lt).getUnicastValidTime() == null);
        assertTrue(linkDiscovery.links.get(lt).getMulticastValidTime() != null);

        // Call timeout and check if link is no longer present.
        linkDiscovery.timeoutLinks();
        assertTrue(linkDiscovery.links.get(lt) == null);

        // Start clean and see if loops are also added.
        lt = new Link(1L, 1, 1L, 2);
        srcNpt = new NodePortTuple(1L, 1);
        dstNpt = new NodePortTuple(1L, 2);
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);


        // Start clean and see if loops are also added.
        lt = new Link(1L, 1, 1L, 3);
        srcNpt = new NodePortTuple(1L, 1);
        dstNpt = new NodePortTuple(1L, 3);
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);

        // Start clean and see if loops are also added.
        lt = new Link(1L, 4, 1L, 5);
        srcNpt = new NodePortTuple(1L, 4);
        dstNpt = new NodePortTuple(1L, 5);
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);

        // Start clean and see if loops are also added.
        lt = new Link(1L, 3, 1L, 5);
        srcNpt = new NodePortTuple(1L, 3);
        dstNpt = new NodePortTuple(1L, 5);
        info = new LinkInfo(System.currentTimeMillis() - 40000,
                            null, System.currentTimeMillis() - 40000);
        linkDiscovery.addOrUpdateLink(lt, info);
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    public void testHARoleChange() throws Exception {
        LinkDiscoveryManager linkDiscovery = getLinkDiscoveryManager();
        IOFSwitch sw1 = createMockSwitch(1L);
        IOFSwitch sw2 = createMockSwitch(2L);
        replay(sw1, sw2);
        Link lt = new Link(1L, 2, 2L, 1);
        NodePortTuple srcNpt = new NodePortTuple(1L, 2);
        NodePortTuple dstNpt = new NodePortTuple(2L, 1);
        LinkInfo info = new LinkInfo(System.currentTimeMillis(),
                                     System.currentTimeMillis(), null);
        linkDiscovery.addOrUpdateLink(lt, info);

        // check invariants hold
        assertNotNull(linkDiscovery.switchLinks.get(lt.getSrc()));
        assertTrue(linkDiscovery.switchLinks.get(lt.getSrc()).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(srcNpt));
        assertTrue(linkDiscovery.portLinks.get(srcNpt).contains(lt));
        assertNotNull(linkDiscovery.portLinks.get(dstNpt));
        assertTrue(linkDiscovery.portLinks.get(dstNpt).contains(lt));
        assertTrue(linkDiscovery.links.containsKey(lt));
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Related Classes of net.floodlightcontroller.routing.Link

  • net.floodlightcontroller.flowcache.PortDownReconciliationTest
  • net.floodlightcontroller.linkdiscovery.internal.LinkDiscoveryManager
  • net.floodlightcontroller.linkdiscovery.internal.LinkDiscoveryManagerTest
  • net.floodlightcontroller.linkdiscovery.web.ExternalLinksResource
  • net.floodlightcontroller.linkdiscovery.web.LinksResource
  • net.floodlightcontroller.topology.TopologyInstance
  • net.floodlightcontroller.topology.TopologyManager
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