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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.pooling.state;
import static org.junit.Assert.assertNotNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.concurrent.atomic.AtomicReference;
import org.onap.policy.drools.pooling.CancellableScheduledTask;
import org.onap.policy.drools.pooling.PoolingManager;
import org.onap.policy.drools.pooling.PoolingProperties;
import org.onap.policy.drools.pooling.message.BucketAssignments;
import org.onap.policy.drools.pooling.message.Leader;
import org.onap.policy.drools.pooling.message.Message;
import org.onap.policy.drools.utils.Pair;
import org.onap.policy.drools.utils.Triple;
/**
* Superclass used to test subclasses of {@link State}.
*/
public class BasicStateTester {
protected static final long STD_HEARTBEAT_WAIT_MS = 10;
protected static final long STD_REACTIVATE_WAIT_MS = STD_HEARTBEAT_WAIT_MS + 1;
protected static final long STD_IDENTIFICATION_MS = STD_REACTIVATE_WAIT_MS + 1;
protected static final long STD_ACTIVE_HEARTBEAT_MS = STD_IDENTIFICATION_MS + 1;
protected static final long STD_INTER_HEARTBEAT_MS = STD_ACTIVE_HEARTBEAT_MS + 1;
protected static final String MY_TOPIC = "myTopic";
protected static final String PREV_HOST = "prevHost";
protected static final String PREV_HOST2 = PREV_HOST + "A";
// this follows PREV_HOST, alphabetically
protected static final String MY_HOST = PREV_HOST + "X";
// these follow MY_HOST, alphabetically
protected static final String HOST1 = MY_HOST + "1";
protected static final String HOST2 = MY_HOST + "2";
protected static final String HOST3 = MY_HOST + "3";
protected static final String HOST4 = MY_HOST + "4";
protected static final String LEADER = HOST1;
protected static final String[] HOST_ARR3 = {HOST1, MY_HOST, HOST2};
protected static final BucketAssignments EMPTY_ASGN = new BucketAssignments();
protected static final BucketAssignments ASGN3 = new BucketAssignments(HOST_ARR3);
/**
* Scheduled tasks returned by schedule().
*/
protected LinkedList<CancellableScheduledTask> onceSchedules;
/**
* Tasks captured via schedule().
*/
protected LinkedList<Pair<Long, StateTimerTask>> onceTasks;
/**
* Scheduled tasks returned by scheduleWithFixedDelay().
*/
protected LinkedList<CancellableScheduledTask> repeatedSchedules;
/**
* Tasks captured via scheduleWithFixedDelay().
*/
protected LinkedList<Triple<Long, Long, StateTimerTask>> repeatedTasks;
/**
* Messages captured via publish().
*/
protected LinkedList<Pair<String, Message>> published;
/**
* Messages captured via publishAdmin().
*/
protected LinkedList<Message> admin;
protected PoolingManager mgr;
protected PoolingProperties props;
protected State prevState;
public BasicStateTester() {
super();
}
/**
* Setup.
*
* @throws Exception throws exception
*/
public void setUp() throws Exception {
onceSchedules = new LinkedList<>();
onceTasks = new LinkedList<>();
repeatedSchedules = new LinkedList<>();
repeatedTasks = new LinkedList<>();
published = new LinkedList<>();
admin = new LinkedList<>();
mgr = mock(PoolingManager.class);
props = mock(PoolingProperties.class);
when(mgr.getHost()).thenReturn(MY_HOST);
when(mgr.getTopic()).thenReturn(MY_TOPIC);
when(mgr.getProperties()).thenReturn(props);
when(props.getStartHeartbeatMs()).thenReturn(STD_HEARTBEAT_WAIT_MS);
when(props.getReactivateMs()).thenReturn(STD_REACTIVATE_WAIT_MS);
when(props.getIdentificationMs()).thenReturn(STD_IDENTIFICATION_MS);
when(props.getActiveHeartbeatMs()).thenReturn(STD_ACTIVE_HEARTBEAT_MS);
when(props.getInterHeartbeatMs()).thenReturn(STD_INTER_HEARTBEAT_MS);
prevState = new State(mgr) {
@Override
public Map<String, Object> getFilter() {
throw new UnsupportedOperationException("cannot filter");
}
};
// capture publish() arguments
doAnswer(invocation -> {
Object[] args = invocation.getArguments();
published.add(new Pair<>((String) args[0], (Message) args[1]));
return null;
}).when(mgr).publish(anyString(), any(Message.class));
// capture publishAdmin() arguments
doAnswer(invocation -> {
Object[] args = invocation.getArguments();
admin.add((Message) args[0]);
return null;
}).when(mgr).publishAdmin(any(Message.class));
// capture schedule() arguments, and return a new future
when(mgr.schedule(anyLong(), any(StateTimerTask.class))).thenAnswer(invocation -> {
Object[] args = invocation.getArguments();
onceTasks.add(new Pair<>((Long) args[0], (StateTimerTask) args[1]));
CancellableScheduledTask sched = mock(CancellableScheduledTask.class);
onceSchedules.add(sched);
return sched;
});
// capture scheduleWithFixedDelay() arguments, and return a new future
when(mgr.scheduleWithFixedDelay(anyLong(), anyLong(), any(StateTimerTask.class))).thenAnswer(invocation -> {
Object[] args = invocation.getArguments();
repeatedTasks.add(new Triple<>((Long) args[0], (Long) args[1], (StateTimerTask) args[2]));
CancellableScheduledTask sched = mock(CancellableScheduledTask.class);
repeatedSchedules.add(sched);
return sched;
});
// get/set assignments in the manager
AtomicReference<BucketAssignments> asgn = new AtomicReference<>(ASGN3);
when(mgr.getAssignments()).thenAnswer(args -> asgn.get());
doAnswer(args -> {
asgn.set(args.getArgument(0));
return null;
}).when(mgr).startDistributing(any());
}
/**
* Makes a sorted set of hosts.
*
* @param hosts the hosts to be sorted
* @return the set of hosts, sorted
*/
protected SortedSet<String> sortHosts(String... hosts) {
return new TreeSet<>(Arrays.asList(hosts));
}
/**
* Captures the host array from the Leader message published to the admin channel.
*
* @return the host array, as a list
*/
protected List<String> captureHostList() {
return Arrays.asList(captureHostArray());
}
/**
* Captures the host array from the Leader message published to the admin channel.
*
* @return the host array
*/
protected String[] captureHostArray() {
BucketAssignments asgn = captureAssignments();
String[] arr = asgn.getHostArray();
assertNotNull(arr);
return arr;
}
/**
* Captures the assignments from the Leader message published to the admin channel.
*
* @return the bucket assignments
*/
protected BucketAssignments captureAssignments() {
Leader msg = captureAdminMessage(Leader.class);
BucketAssignments asgn = msg.getAssignments();
assertNotNull(asgn);
return asgn;
}
/**
* Captures the message published to the admin channel.
*
* @param clazz type of {@link Message} to capture
* @return the message that was published
*/
protected <T extends Message> T captureAdminMessage(Class<T> clazz) {
return captureAdminMessage(clazz, 0);
}
/**
* Captures the message published to the admin channel.
*
* @param clazz type of {@link Message} to capture
* @param index index of the item to be captured
* @return the message that was published
*/
protected <T extends Message> T captureAdminMessage(Class<T> clazz, int index) {
return clazz.cast(admin.get(index));
}
/**
* Captures the message published to the non-admin channels.
*
* @param clazz type of {@link Message} to capture
* @return the (channel,message) pair that was published
*/
protected <T extends Message> Pair<String, T> capturePublishedMessage(Class<T> clazz) {
return capturePublishedMessage(clazz, 0);
}
/**
* Captures the message published to the non-admin channels.
*
* @param clazz type of {@link Message} to capture
* @param index index of the item to be captured
* @return the (channel,message) pair that was published
*/
protected <T extends Message> Pair<String, T> capturePublishedMessage(Class<T> clazz, int index) {
Pair<String, Message> msg = published.get(index);
return new Pair<>(msg.first(), clazz.cast(msg.second()));
}
}
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