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/*
* Copyright 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 java.util.List;
import java.util.Optional;
import org.hamcrest.Matchers;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import org.onlab.packet.MplsLabel;
import org.onosproject.TestApplicationId;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.Link;
import org.onosproject.net.Path;
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.MplsIntent;
import org.onosproject.net.intent.MplsPathIntent;
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.DefaultEdgeLink.createEdgeLink;
import static org.onosproject.net.DeviceId.deviceId;
import static org.onosproject.net.NetTestTools.APP_ID;
import static org.onosproject.net.NetTestTools.connectPoint;
import static org.onosproject.net.PortNumber.portNumber;
import static org.onosproject.net.intent.LinksHaveEntryWithSourceDestinationPairMatcher.linksHasPath;
/**
* Unit tests for the HostToHost intent compiler.
*/
public class MplsIntentCompilerTest extends AbstractIntentTest {
private static final ApplicationId APPID = new TestApplicationId("foo");
private TrafficSelector selector = new IntentTestsMocks.MockSelector();
private TrafficTreatment treatment = new IntentTestsMocks.MockTreatment();
/**
* Creates a PointToPoint intent based on ingress and egress device Ids.
*
* @param ingressIdString string for id of ingress device
* @param egressIdString string for id of egress device
* @return PointToPointIntent for the two devices
*/
private MplsIntent makeIntent(String ingressIdString, Optional<MplsLabel> ingressLabel,
String egressIdString, Optional<MplsLabel> egressLabel) {
return MplsIntent.builder()
.appId(APPID)
.selector(selector)
.treatment(treatment)
.ingressPoint(connectPoint(ingressIdString, 1))
.ingressLabel(ingressLabel)
.egressPoint(connectPoint(egressIdString, 1))
.egressLabel(egressLabel).build();
}
/**
* Creates a compiler for HostToHost intents.
*
* @param hops string array describing the path hops to use when compiling
* @return HostToHost intent compiler
*/
private MplsIntentCompiler makeCompiler(String[] hops) {
MplsIntentCompiler compiler =
new MplsIntentCompiler();
compiler.pathService = new IntentTestsMocks.MockPathService(hops);
return compiler;
}
/**
* Tests a pair of devices in an 8 hop path, forward direction.
*/
@Test
public void testForwardPathCompilation() {
Optional<MplsLabel> ingressLabel = Optional.of(MplsLabel.mplsLabel(10));
Optional<MplsLabel> egressLabel = Optional.of(MplsLabel.mplsLabel(20));
MplsIntent intent = makeIntent("d1", ingressLabel, "d8", egressLabel);
assertThat(intent, is(notNullValue()));
String[] hops = {"d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8"};
MplsIntentCompiler 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 forwardResultIntent = result.get(0);
assertThat(forwardResultIntent instanceof MplsPathIntent, is(true));
// if statement suppresses static analysis warnings about unchecked cast
if (forwardResultIntent instanceof MplsPathIntent) {
MplsPathIntent forwardPathIntent = (MplsPathIntent) forwardResultIntent;
// 7 links for the hops, plus one default lnk on ingress and egress
assertThat(forwardPathIntent.path().links(), hasSize(hops.length + 1));
assertThat(forwardPathIntent.path().links(), linksHasPath("d1", "d2"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d2", "d3"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d3", "d4"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d4", "d5"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d5", "d6"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d6", "d7"));
assertThat(forwardPathIntent.path().links(), linksHasPath("d7", "d8"));
assertEquals(forwardPathIntent.egressLabel(), egressLabel);
assertEquals(forwardPathIntent.ingressLabel(), ingressLabel);
}
}
/**
* Tests a pair of devices in an 8 hop path, forward direction.
*/
@Test
public void testReversePathCompilation() {
Optional<MplsLabel> ingressLabel = Optional.of(MplsLabel.mplsLabel(10));
Optional<MplsLabel> egressLabel = Optional.of(MplsLabel.mplsLabel(20));
MplsIntent intent = makeIntent("d8", ingressLabel, "d1", egressLabel);
assertThat(intent, is(notNullValue()));
String[] hops = {"d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8"};
MplsIntentCompiler 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 reverseResultIntent = result.get(0);
assertThat(reverseResultIntent instanceof MplsPathIntent, is(true));
// if statement suppresses static analysis warnings about unchecked cast
if (reverseResultIntent instanceof MplsPathIntent) {
MplsPathIntent reversePathIntent = (MplsPathIntent) reverseResultIntent;
assertThat(reversePathIntent.path().links(), hasSize(hops.length + 1));
assertThat(reversePathIntent.path().links(), linksHasPath("d2", "d1"));
assertThat(reversePathIntent.path().links(), linksHasPath("d3", "d2"));
assertThat(reversePathIntent.path().links(), linksHasPath("d4", "d3"));
assertThat(reversePathIntent.path().links(), linksHasPath("d5", "d4"));
assertThat(reversePathIntent.path().links(), linksHasPath("d6", "d5"));
assertThat(reversePathIntent.path().links(), linksHasPath("d7", "d6"));
assertThat(reversePathIntent.path().links(), linksHasPath("d8", "d7"));
assertEquals(reversePathIntent.egressLabel(), egressLabel);
assertEquals(reversePathIntent.ingressLabel(), ingressLabel);
}
}
/**
* Tests compilation of the intent which designates two different ports on the same switch.
*/
@Test
public void testSameSwitchDifferentPortsIntentCompilation() {
ConnectPoint src = new ConnectPoint(deviceId("1"), portNumber(1));
ConnectPoint dst = new ConnectPoint(deviceId("1"), portNumber(2));
MplsIntent intent = MplsIntent.builder()
.appId(APP_ID)
.selector(selector)
.treatment(treatment)
.ingressPoint(src)
.ingressLabel(Optional.empty())
.egressPoint(dst)
.egressLabel(Optional.empty())
.build();
String[] hops = {"1"};
MplsIntentCompiler sut = makeCompiler(hops);
List<Intent> compiled = sut.compile(intent, null, null);
assertThat(compiled, hasSize(1));
assertThat(compiled.get(0), is(instanceOf(MplsPathIntent.class)));
Path path = ((MplsPathIntent) compiled.get(0)).path();
assertThat(path.links(), hasSize(2));
Link firstLink = path.links().get(0);
assertThat(firstLink, is(createEdgeLink(src, true)));
Link secondLink = path.links().get(1);
assertThat(secondLink, is(createEdgeLink(dst, false)));
}
}
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