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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.net.intent.impl.compiler;
import org.hamcrest.Matchers;
import org.junit.Test;
import org.onosproject.TestApplicationId;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.onosproject.net.ElementId;
import org.onosproject.net.Path;
import org.onosproject.net.device.DeviceServiceAdapter;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.intent.AbstractIntentTest;
import org.onosproject.net.intent.Intent;
import org.onosproject.net.intent.IntentTestsMocks;
import org.onosproject.net.intent.LinkCollectionIntent;
import org.onosproject.net.intent.MultiPointToSinglePointIntent;
import org.onosproject.net.topology.PathServiceAdapter;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.hasSize;
import static org.hamcrest.Matchers.is;
import static org.onosproject.net.NetTestTools.connectPoint;
import static org.onosproject.net.NetTestTools.createPath;
import static org.onosproject.net.intent.LinksHaveEntryWithSourceDestinationPairMatcher.linksHasPath;
/**
* Unit tests for the MultiPointToSinglePoint intent compiler.
*/
public class MultiPointToSinglePointIntentCompilerTest extends AbstractIntentTest {
private static final ApplicationId APPID = new TestApplicationId("foo");
private TrafficSelector selector = new IntentTestsMocks.MockSelector();
private TrafficTreatment treatment = new IntentTestsMocks.MockTreatment();
/**
* Mock path service for creating paths within the test.
*/
private static class MockPathService extends PathServiceAdapter {
final String[] pathHops;
/**
* Constructor that provides a set of hops to mock.
*
* @param pathHops path hops to mock
*/
MockPathService(String[] pathHops) {
this.pathHops = pathHops;
}
@Override
public Set<Path> getPaths(ElementId src, ElementId dst) {
Set<Path> result = new HashSet<>();
String[] allHops = new String[pathHops.length + 1];
allHops[0] = src.toString();
if (pathHops.length != 0) {
System.arraycopy(pathHops, 0, allHops, 1, pathHops.length);
}
result.add(createPath(allHops));
return result;
}
}
/**
* Mocks the device service so that a device appears available in the test.
*/
private static class MockDeviceService extends DeviceServiceAdapter {
@Override
public boolean isAvailable(DeviceId deviceId) {
return true;
}
}
/**
* Creates a MultiPointToSinglePoint intent for a group of ingress points
* and an egress point.
*
* @param ingressIds array of ingress device ids
* @param egressId device id of the egress point
* @return MultiPointToSinglePoint intent
*/
private MultiPointToSinglePointIntent makeIntent(String[] ingressIds, String egressId) {
Set<ConnectPoint> ingressPoints = new HashSet<>();
ConnectPoint egressPoint = connectPoint(egressId, 2);
for (String ingressId : ingressIds) {
ingressPoints.add(connectPoint(ingressId, 1));
}
return MultiPointToSinglePointIntent.builder()
.appId(APPID)
.selector(selector)
.treatment(treatment)
.ingressPoints(ingressPoints)
.egressPoint(egressPoint)
.build();
}
/**
* Creates a compiler for MultiPointToSinglePoint intents.
*
* @param hops hops to use while computing paths for this intent
* @return MultiPointToSinglePoint intent
*/
private MultiPointToSinglePointIntentCompiler makeCompiler(String[] hops) {
MultiPointToSinglePointIntentCompiler compiler =
new MultiPointToSinglePointIntentCompiler();
compiler.pathService = new MockPathService(hops);
compiler.deviceService = new MockDeviceService();
return compiler;
}
/**
* Tests a single ingress point with 8 hops to its egress point.
*/
@Test
public void testSingleLongPathCompilation() {
String[] ingress = {"ingress"};
String egress = "egress";
MultiPointToSinglePointIntent intent = makeIntent(ingress, egress);
assertThat(intent, is(notNullValue()));
String[] hops = {"h1", "h2", "h3", "h4", "h5", "h6", "h7", "h8",
egress};
MultiPointToSinglePointIntentCompiler compiler = makeCompiler(hops);
assertThat(compiler, is(notNullValue()));
List<Intent> result = compiler.compile(intent, null, null);
assertThat(result, is(Matchers.notNullValue()));
assertThat(result, hasSize(1));
Intent resultIntent = result.get(0);
assertThat(resultIntent instanceof LinkCollectionIntent, is(true));
if (resultIntent instanceof LinkCollectionIntent) {
LinkCollectionIntent linkIntent = (LinkCollectionIntent) resultIntent;
assertThat(linkIntent.links(), hasSize(9));
assertThat(linkIntent.links(), linksHasPath("ingress", "h1"));
assertThat(linkIntent.links(), linksHasPath("h1", "h2"));
assertThat(linkIntent.links(), linksHasPath("h2", "h3"));
assertThat(linkIntent.links(), linksHasPath("h4", "h5"));
assertThat(linkIntent.links(), linksHasPath("h5", "h6"));
assertThat(linkIntent.links(), linksHasPath("h7", "h8"));
assertThat(linkIntent.links(), linksHasPath("h8", "egress"));
}
}
/**
* Tests a simple topology where two ingress points share some path segments
* and some path segments are not shared.
*/
@Test
public void testTwoIngressCompilation() {
String[] ingress = {"ingress1", "ingress2"};
String egress = "egress";
MultiPointToSinglePointIntent intent = makeIntent(ingress, egress);
assertThat(intent, is(notNullValue()));
final String[] hops = {"inner1", "inner2", egress};
MultiPointToSinglePointIntentCompiler compiler = makeCompiler(hops);
assertThat(compiler, is(notNullValue()));
List<Intent> result = compiler.compile(intent, null, null);
assertThat(result, is(notNullValue()));
assertThat(result, hasSize(1));
Intent resultIntent = result.get(0);
assertThat(resultIntent instanceof LinkCollectionIntent, is(true));
if (resultIntent instanceof LinkCollectionIntent) {
LinkCollectionIntent linkIntent = (LinkCollectionIntent) resultIntent;
assertThat(linkIntent.links(), hasSize(4));
assertThat(linkIntent.links(), linksHasPath("ingress1", "inner1"));
assertThat(linkIntent.links(), linksHasPath("ingress2", "inner1"));
assertThat(linkIntent.links(), linksHasPath("inner1", "inner2"));
assertThat(linkIntent.links(), linksHasPath("inner2", "egress"));
}
}
/**
* Tests a large number of ingress points that share a common path to the
* egress point.
*/
@Test
public void testMultiIngressCompilation() {
String[] ingress = {"i1", "i2", "i3", "i4", "i5",
"i6", "i7", "i8", "i9", "i10"};
String egress = "e";
MultiPointToSinglePointIntent intent = makeIntent(ingress, egress);
assertThat(intent, is(notNullValue()));
final String[] hops = {"n1", egress};
MultiPointToSinglePointIntentCompiler compiler = makeCompiler(hops);
assertThat(compiler, is(notNullValue()));
List<Intent> result = compiler.compile(intent, null, null);
assertThat(result, is(notNullValue()));
assertThat(result, hasSize(1));
Intent resultIntent = result.get(0);
assertThat(resultIntent instanceof LinkCollectionIntent, is(true));
if (resultIntent instanceof LinkCollectionIntent) {
LinkCollectionIntent linkIntent = (LinkCollectionIntent) resultIntent;
assertThat(linkIntent.links(), hasSize(ingress.length + 1));
for (String ingressToCheck : ingress) {
assertThat(linkIntent.links(),
linksHasPath(ingressToCheck,
"n1"));
}
assertThat(linkIntent.links(), linksHasPath("n1", egress));
}
}
/**
* Tests ingress and egress on the same device.
*/
@Test
public void testSameDeviceCompilation() {
String[] ingress = {"i1", "i2"};
String egress = "i1";
MultiPointToSinglePointIntent intent = makeIntent(ingress, egress);
assertThat(intent, is(notNullValue()));
final String[] hops = {"i1", "i2"};
MultiPointToSinglePointIntentCompiler compiler = makeCompiler(hops);
assertThat(compiler, is(notNullValue()));
List<Intent> result = compiler.compile(intent, null, null);
assertThat(result, is(notNullValue()));
assertThat(result, hasSize(1));
Intent resultIntent = result.get(0);
assertThat(resultIntent, instanceOf(LinkCollectionIntent.class));
if (resultIntent instanceof LinkCollectionIntent) {
LinkCollectionIntent linkIntent = (LinkCollectionIntent) resultIntent;
assertThat(linkIntent.links(), hasSize(ingress.length));
assertThat(linkIntent.links(), linksHasPath("i2", "i1"));
}
}
}
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