/**
* Copyright 2016 Yahoo Inc.
*
* 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 com.yahoo.pulsar.common.policies.impl;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.SortedSet;
import java.util.TreeSet;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.testng.annotations.Test;
import com.yahoo.pulsar.common.naming.NamespaceName;
import com.yahoo.pulsar.common.policies.data.AutoFailoverPolicyData;
import com.yahoo.pulsar.common.policies.data.AutoFailoverPolicyType;
import com.yahoo.pulsar.common.policies.data.BrokerStatus;
import com.yahoo.pulsar.common.policies.data.NamespaceIsolationData;
import com.yahoo.pulsar.common.policies.data.OldPolicies;
import com.yahoo.pulsar.common.util.ObjectMapperFactory;
@Test
public class NamespaceIsolationPolicyImplTest {
private final String defaultPolicyJson = "{\"namespaces\":[\"pulsar/use/test.*\"],\"primary\":[\"prod1-broker[1-3].messaging.use.example.com\"],\"secondary\":[\"prod1-broker.*.use.example.com\"],\"auto_failover_policy\":{\"policy_type\":\"min_available\",\"parameters\":{\"min_limit\":\"3\",\"usage_threshold\":\"90\"}}}";
private NamespaceIsolationPolicyImpl getDefaultPolicy() throws Exception {
ObjectMapper jsonMapper = ObjectMapperFactory.create();
return new NamespaceIsolationPolicyImpl(
jsonMapper.readValue(this.defaultPolicyJson.getBytes(), NamespaceIsolationData.class));
}
@Test
public void testConstructor() throws Exception {
NamespaceIsolationPolicyImpl defaultPolicy = this.getDefaultPolicy();
NamespaceIsolationData policyData = new NamespaceIsolationData();
policyData.namespaces = new ArrayList<String>();
policyData.namespaces.add("pulsar/use/test.*");
policyData.primary = new ArrayList<String>();
policyData.primary.add("prod1-broker[1-3].messaging.use.example.com");
policyData.secondary = new ArrayList<String>();
policyData.secondary.add("prod1-broker.*.use.example.com");
policyData.auto_failover_policy = new AutoFailoverPolicyData();
policyData.auto_failover_policy.policy_type = AutoFailoverPolicyType.min_available;
policyData.auto_failover_policy.parameters = new HashMap<String, String>();
policyData.auto_failover_policy.parameters.put("min_limit", "3");
policyData.auto_failover_policy.parameters.put("usage_threshold", "90");
NamespaceIsolationPolicyImpl newPolicy = new NamespaceIsolationPolicyImpl(policyData);
assertTrue(defaultPolicy.equals(newPolicy));
policyData.auto_failover_policy.parameters.put("usage_threshold", "80");
newPolicy = new NamespaceIsolationPolicyImpl(policyData);
assertTrue(!defaultPolicy.equals(newPolicy));
assertTrue(!newPolicy.equals(new OldPolicies()));
}
@Test
public void testGetPrimaryBrokers() throws Exception {
List<String> primaryBrokers = this.getDefaultPolicy().getPrimaryBrokers();
assertEquals(primaryBrokers.size(), 1);
assertEquals(primaryBrokers.get(0), "prod1-broker[1-3].messaging.use.example.com");
}
@Test
public void testGetSecondaryBrokers() throws Exception {
List<String> secondaryBrokers = this.getDefaultPolicy().getSecondaryBrokers();
assertEquals(secondaryBrokers.size(), 1);
assertEquals(secondaryBrokers.get(0), "prod1-broker.*.use.example.com");
}
@Test
public void testIsPrimaryOrSecondaryBroker() throws Exception {
NamespaceIsolationPolicyImpl defaultPolicy = this.getDefaultPolicy();
assertTrue(defaultPolicy.isPrimaryBroker("prod1-broker2.messaging.use.example.com"));
assertTrue(!defaultPolicy.isPrimaryBroker("prod1-broker5.messaging.use.example.com"));
assertTrue(defaultPolicy.isSecondaryBroker("prod1-broker5.messaging.use.example.com"));
assertTrue(!defaultPolicy.isSecondaryBroker("broker-X.messaging.use.example.com"));
}
@Test
public void testFindBrokers() throws Exception {
NamespaceIsolationPolicyImpl defaultPolicy = this.getDefaultPolicy();
List<URL> brokers = new ArrayList<URL>();
for (int i = 0; i < 10; i++) {
String broker = String.format("prod1-broker%d.messaging.use.example.com", i);
brokers.add(new URL(String.format("http://%s:8080", broker)));
}
List<URL> otherBrokers = new ArrayList<URL>();
for (int i = 0; i < 10; i++) {
String broker = String.format("prod1-broker%d.messaging.usw.example.com", i);
brokers.add(new URL(String.format("http://%s:8080", broker)));
}
List<URL> primaryBrokers = defaultPolicy.findPrimaryBrokers(brokers, new NamespaceName("pulsar/use/testns-1"));
assertEquals(primaryBrokers.size(), 3);
for (URL primaryBroker : primaryBrokers) {
assertTrue(primaryBroker.getHost().matches("prod1-broker[1-3].messaging.use.example.com"));
}
primaryBrokers = defaultPolicy.findPrimaryBrokers(otherBrokers, new NamespaceName("pulsar/use/testns-1"));
assertTrue(primaryBrokers.isEmpty());
try {
primaryBrokers = defaultPolicy.findPrimaryBrokers(brokers, new NamespaceName("no/such/namespace"));
} catch (IllegalArgumentException iae) {
// OK
}
List<URL> secondaryBrokers = defaultPolicy.findSecondaryBrokers(brokers,
new NamespaceName("pulsar/use/testns-1"));
assertEquals(secondaryBrokers.size(), 10);
for (URL secondaryBroker : secondaryBrokers) {
assertTrue(secondaryBroker.getHost().matches("prod1-broker.*.messaging.use.example.com"));
}
secondaryBrokers = defaultPolicy.findSecondaryBrokers(otherBrokers, new NamespaceName("pulsar/use/testns-1"));
assertTrue(secondaryBrokers.isEmpty());
try {
secondaryBrokers = defaultPolicy.findSecondaryBrokers(brokers, new NamespaceName("no/such/namespace"));
} catch (IllegalArgumentException iae) {
// OK
}
}
@Test
public void testShouldFailover() throws Exception {
NamespaceIsolationPolicyImpl defaultPolicy = this.getDefaultPolicy();
SortedSet<BrokerStatus> brokerStatus = new TreeSet<BrokerStatus>();
for (int i = 0; i < 10; i++) {
BrokerStatus status = new BrokerStatus(String.format("broker-%d", i), true, i * 10);
brokerStatus.add(status);
}
assertEquals(defaultPolicy.shouldFailover(brokerStatus), false);
List<BrokerStatus> objList = new ArrayList<BrokerStatus>();
objList.addAll(brokerStatus);
for (int i = 0; i < 8; i++) {
objList.get(i).setActive(false);
}
assertEquals(defaultPolicy.shouldFailover(brokerStatus), true);
objList.get(7).setActive(true);
assertEquals(defaultPolicy.shouldFailover(brokerStatus), true);
objList.get(9).setLoadFactor(80);
assertEquals(defaultPolicy.shouldFailover(brokerStatus), false);
brokerStatus = new TreeSet<BrokerStatus>();
for (int i = 0; i < 5; i++) {
BrokerStatus status = new BrokerStatus(String.format("broker-%d", 2 * i), true, i * 20);
brokerStatus.add(status);
status = new BrokerStatus(String.format("broker-%d", 2 * i + 1), true, i * 20);
brokerStatus.add(status);
}
assertEquals(brokerStatus.size(), 10);
}
@Test
public void testGetAvailablePrimaryBrokers() throws Exception {
NamespaceIsolationPolicyImpl defaultPolicy = this.getDefaultPolicy();
SortedSet<BrokerStatus> brokerStatus = new TreeSet<BrokerStatus>();
SortedSet<BrokerStatus> expectedAvailablePrimaries = new TreeSet<BrokerStatus>();
for (int i = 0; i < 10; i++) {
BrokerStatus status = new BrokerStatus(String.format("prod1-broker%d.messaging.use.example.com", i),
i % 2 == 0, i * 10);
brokerStatus.add(status);
if (i % 2 == 0) {
expectedAvailablePrimaries.add(status);
}
}
SortedSet<BrokerStatus> availablePrimaries = defaultPolicy.getAvailablePrimaryBrokers(brokerStatus);
assertEquals(expectedAvailablePrimaries.size(), availablePrimaries.size());
for (BrokerStatus bs : availablePrimaries) {
if (!expectedAvailablePrimaries.contains(bs)) {
fail("Should not happen");
}
}
}
}