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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.rest;
import java.util.HashMap;
import java.util.stream.IntStream;
import org.junit.Before;
import org.junit.Test;
import org.onlab.osgi.ServiceDirectory;
import org.onlab.osgi.TestServiceDirectory;
import org.onlab.rest.BaseResource;
import org.onosproject.codec.CodecService;
import org.onosproject.codec.impl.CodecManager;
import org.onosproject.net.Link;
import org.onosproject.net.link.LinkService;
import org.onosproject.net.statistic.DefaultLoad;
import org.onosproject.net.statistic.StatisticService;
import com.eclipsesource.json.JsonArray;
import com.eclipsesource.json.JsonObject;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.sun.jersey.api.client.WebResource;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.hasSize;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.lessThanOrEqualTo;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
import static org.onosproject.net.NetTestTools.connectPoint;
import static org.onosproject.net.NetTestTools.link;
/**
* Unit tests for statistics REST APIs.
*/
public class StatisticsResourceTest extends ResourceTest {
Link link1 = link("src1", 1, "dst1", 1);
Link link2 = link("src2", 2, "dst2", 2);
Link link3 = link("src3", 3, "dst3", 3);
LinkService mockLinkService;
StatisticService mockStatisticService;
/**
* Initializes test mocks and environment.
*/
@Before
public void setUpTest() {
mockLinkService = createMock(LinkService.class);
expect(mockLinkService.getLinks())
.andReturn(ImmutableList.of(link1, link2, link3));
expect(mockLinkService.getLinks(connectPoint("0000000000000001", 2)))
.andReturn(ImmutableSet.of(link3));
mockStatisticService = createMock(StatisticService.class);
expect(mockStatisticService.load(link1))
.andReturn(new DefaultLoad(2, 1, 1));
expect(mockStatisticService.load(link2))
.andReturn(new DefaultLoad(22, 11, 1));
expect(mockStatisticService.load(link3))
.andReturn(new DefaultLoad(222, 111, 1));
replay(mockLinkService, mockStatisticService);
// Register the services needed for the test
CodecManager codecService = new CodecManager();
codecService.activate();
ServiceDirectory testDirectory =
new TestServiceDirectory()
.add(LinkService.class, mockLinkService)
.add(StatisticService.class, mockStatisticService)
.add(CodecService.class, codecService);
BaseResource.setServiceDirectory(testDirectory);
}
/**
* Checks that the values in a JSON representation of a Load are
* correct.
*
* @param load JSON for the Loan object
* @param rate expected vale fo rate
* @param latest expected value for latest
* @param valid expected value for valid flag
* @param device expected device ID
*/
private void checkValues(JsonObject load, int rate, int latest,
boolean valid, String device) {
assertThat(load, notNullValue());
assertThat(load.get("rate").asInt(), is(rate));
assertThat(load.get("latest").asInt(), is(latest));
assertThat(load.get("valid").asBoolean(), is(valid));
assertThat(load.get("time").asLong(),
lessThanOrEqualTo((System.currentTimeMillis())));
assertThat(load.get("link").asString(),
containsString("device=of:" + device));
}
/**
* Tests GET of a single Load statistics object.
*/
@Test
public void testSingleLoadGet() {
final WebResource rs = resource();
final String response = rs.path("statistics/flows/link")
.queryParam("device", "of:0000000000000001")
.queryParam("port", "2")
.get(String.class);
final JsonObject result = JsonObject.readFrom(response);
assertThat(result, notNullValue());
assertThat(result.names(), hasSize(1));
assertThat(result.names().get(0), is("loads"));
final JsonArray jsonLoads = result.get("loads").asArray();
assertThat(jsonLoads, notNullValue());
assertThat(jsonLoads.size(), is(1));
JsonObject load1 = jsonLoads.get(0).asObject();
checkValues(load1, 111, 222, true, "src3");
}
/**
* Tests GET of all Load statistics objects.
*/
@Test
public void testLoadsGet() {
final WebResource rs = resource();
final String response = rs.path("statistics/flows/link/").get(String.class);
final JsonObject result = JsonObject.readFrom(response);
assertThat(result, notNullValue());
assertThat(result.names(), hasSize(1));
assertThat(result.names().get(0), is("loads"));
final JsonArray jsonLoads = result.get("loads").asArray();
assertThat(jsonLoads, notNullValue());
assertThat(jsonLoads.size(), is(3));
// Hash the loads by the current field to allow easy lookup if the
// order changes.
HashMap<Integer, JsonObject> currentMap = new HashMap<>();
IntStream.range(0, jsonLoads.size())
.forEach(index -> currentMap.put(
jsonLoads.get(index).asObject().get("latest").asInt(),
jsonLoads.get(index).asObject()));
JsonObject load1 = currentMap.get(2);
checkValues(load1, 1, 2, true, "src1");
JsonObject load2 = currentMap.get(22);
checkValues(load2, 11, 22, true, "src2");
JsonObject load3 = currentMap.get(222);
checkValues(load3, 111, 222, true, "src3");
}
}
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