/** @throws InterruptedException on interruption */
public final void testLinkStateUpdate() throws InterruptedException {
TopologyMap graph1 = new TopologyMap(NODE_1);
// cause timestamp-based sequence numbers to be different
Thread.sleep(SHORT_TIMESTAMP_CHANGING_DELAY);
TopologyMap graph2 = new TopologyMap(NODE_2);
// crude approach to ensure different timestamps; it would be better to inject an artificial
// time source for testing -- misc_ro, June 2013
while (graph2.getSequenceNumberOfNode(NODE_2) == graph1.getSequenceNumberOfNode(NODE_1)) {
Thread.sleep(SHORT_TIMESTAMP_CHANGING_DELAY);
graph2 = new TopologyMap(NODE_2);
}
// get the highest current sequence number (assuming node 3 was assigned the highest one)
long node1OriginalSeqNo = graph1.getSequenceNumberOfNode(NODE_1);
long node2OriginalSeqNo = graph2.getSequenceNumberOfNode(NODE_2);
assertFalse(node1OriginalSeqNo == node2OriginalSeqNo);
assertFalse(graph1.equals(graph2));
LinkStateAdvertisement lsa = graph1.generateNewLocalLSA();
// LSA generation should have increased the node 1 sequence number in graph 1
long node1NewSeqNo = graph1.getSequenceNumberOfNode(NODE_1);
assertEquals(node1NewSeqNo, lsa.getSequenceNumber());
assertTrue(node1NewSeqNo > node1OriginalSeqNo);
// verify graph update
assertTrue(graph2.update(lsa));
assertEquals(node1NewSeqNo, graph2.getSequenceNumberOfNode(NODE_1));
lsa = graph2.generateNewLocalLSA();
// LSA generation should have increased the node 2 sequence number in graph 2
long node2NewSeqNo = graph2.getSequenceNumberOfNode(NODE_2);
assertEquals(node2NewSeqNo, lsa.getSequenceNumber());
assertTrue(node2NewSeqNo > node2OriginalSeqNo);
// verify graph update
assertTrue(graph1.update(lsa));
assertEquals(node2NewSeqNo, graph1.getSequenceNumberOfNode(NODE_2));
assertTrue(graph1.equals(graph2));
graph1.addNode(NODE_3);
graph1.addLink(NODE_1, NODE_3, CONNECTION_ID_1);
assertFalse(graph1.equals(graph2));
lsa = graph1.generateNewLocalLSA();
assertTrue(lsa.getSequenceNumber() > node1NewSeqNo);
node1NewSeqNo = graph1.getSequenceNumberOfNode(NODE_1);
assertEquals(node1NewSeqNo, lsa.getSequenceNumber());
assertTrue(graph2.update(lsa));
assertEquals(node1NewSeqNo, graph2.getSequenceNumberOfNode(NODE_1));
assertTrue(graph1.equals(graph2));
graph2.addLink(NODE_2, NODE_1, CONNECTION_ID_1);
assertFalse(graph2.equals(graph1));
lsa = graph2.generateNewLocalLSA();
graph1.update(lsa);
node2NewSeqNo = graph2.getSequenceNumberOfNode(NODE_2);
assertEquals(node2NewSeqNo, lsa.getSequenceNumber());
assertTrue(graph2.equals(graph1));
assertEquals(node1NewSeqNo, graph2.getSequenceNumberOfNode(NODE_1));
assertEquals(node2NewSeqNo, graph2.getSequenceNumberOfNode(NODE_2));
assertEquals(graph1.getSequenceNumberOfNode(NODE_3), graph2.getSequenceNumberOfNode(NODE_3));
// log.info(NetworkFormatter.summary(graph2));
// log.info(NetworkFormatter.summary(graph1));
}
/** Build graph and do manipulations with some {@link LinkStateAdvertisement}s. */
public final void testUpdateGraph() {
// IMPORTANT: the test graph must be "owned" by a node that is not used in the test,
// as TopologyMap was made to ignore external updates for its local node
networkGraph = new TopologyMap(NODE_3);
networkGraph.addNode(NODE_1);
networkGraph.addNode(NODE_2);
networkGraph.addNode(NODE_3);
assertFalse(GRAPH_CONTAINS_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_3));
assertFalse(GRAPH_CONTAINS_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_2));
assertFalse(GRAPH_CONTAINS_CHANNEL, networkGraph.containsLinkBetween(NODE_2, NODE_3));
networkGraph.addLink(NODE_1, NODE_2, CONNECTION_ID_1);
networkGraph.addLink(NODE_2, NODE_3, CONNECTION_ID_2);
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_2));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_2, NODE_3));
assertFalse(GRAPH_CONTAINS_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_3));
LinkStateAdvertisement lsa =
LinkStateAdvertisement.createUpdateLsa(
NODE_1,
NODE_1_NAME,
true,
networkGraph.getSequenceNumberOfNode(NODE_1) + 1,
networkGraph.hashCode(),
true,
Arrays.asList(
new TopologyLink[] {
new TopologyLink(NODE_1, NODE_2, CONNECTION_ID_1),
new TopologyLink(NODE_1, NODE_3, CONNECTION_ID_3)
}));
assertTrue(LSA_CAUSED_NO_UPDATE, networkGraph.update(lsa));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_3));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_2));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_2, NODE_3));
lsa =
LinkStateAdvertisement.createUpdateLsa(
NODE_1,
NODE_1_NAME,
true,
networkGraph.getSequenceNumberOfNode(NODE_1) + 1,
networkGraph.hashCode(),
true,
Arrays.asList(new TopologyLink[] {new TopologyLink(NODE_1, NODE_3, CONNECTION_ID_1)}));
assertTrue(LSA_CAUSED_NO_UPDATE, networkGraph.update(lsa));
assertFalse(GRAPH_CONTAINS_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_2));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_1, NODE_3));
// inject a new node (NODE_4) via LSA
lsa =
LinkStateAdvertisement.createUpdateLsa(
NODE_4,
NODE_4_NAME,
true,
1,
networkGraph.hashCode(),
true,
Arrays.asList(
new TopologyLink[] {
new TopologyLink(NODE_4, NODE_3, CONNECTION_ID_1),
new TopologyLink(NODE_4, NODE_2, CONNECTION_ID_1)
}));
assertTrue(LSA_CAUSED_NO_UPDATE, networkGraph.update(lsa));
assertTrue(GRAPH_CONTAINS_NODE, networkGraph.containsNode(NODE_4));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_4, NODE_3));
lsa =
LinkStateAdvertisement.createUpdateLsa(
NODE_4,
NODE_4_NAME,
true,
networkGraph.getSequenceNumberOfNode(NODE_4) + 1,
networkGraph.hashCode(),
true,
Arrays.asList(new TopologyLink[] {new TopologyLink(NODE_4, NODE_5, CONNECTION_ID_1)}));
assertFalse(GRAPH_DOES_NOT_CONTAIN_NODE, networkGraph.containsNode(NODE_5));
// log.info(NetworkFormatter.summary(networkGraph));
assertTrue(LSA_CAUSED_NO_UPDATE, networkGraph.update(lsa));
assertTrue(GRAPH_CONTAINS_NODE, networkGraph.containsNode(NODE_5));
assertTrue(GRAPH_SHOULD_CONTAIN_CHANNEL, networkGraph.containsLinkBetween(NODE_4, NODE_5));
}