| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.brooklyn.qa.load; |
| |
| import java.util.Collection; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.brooklyn.api.entity.Entity; |
| import org.apache.brooklyn.api.location.Location; |
| import org.apache.brooklyn.api.sensor.AttributeSensor; |
| import org.apache.brooklyn.core.entity.AbstractEntity; |
| import org.apache.brooklyn.core.sensor.Sensors; |
| import org.apache.brooklyn.util.time.Duration; |
| |
| import com.google.common.base.Predicate; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| |
| public class SimulatedExternalMonitorImpl extends AbstractEntity implements SimulatedExternalMonitor { |
| |
| private ScheduledExecutorService executor; |
| private Future<?> future; |
| |
| @Override |
| public void rebind() { |
| super.rebind(); |
| if (Boolean.TRUE.equals(sensors().get(SERVICE_UP))) { |
| startPolling(); |
| } |
| } |
| |
| @Override |
| public void start(Collection<? extends Location> locations) { |
| if (Boolean.TRUE.equals(sensors().get(SERVICE_UP))) { |
| // already up; no-op |
| } |
| sensors().set(SERVICE_UP, true); |
| startPolling(); |
| } |
| |
| @Override |
| public void stop() { |
| sensors().set(SERVICE_UP, false); |
| stopPolling(); |
| } |
| |
| @Override |
| public void restart() { |
| stop(); |
| start(ImmutableList.<Location>of()); |
| } |
| |
| protected void startPolling() { |
| Duration pollPeriod = config().get(POLL_PERIOD); |
| executor = Executors.newScheduledThreadPool(1); |
| executor.scheduleWithFixedDelay(new Runnable() { |
| public void run() { |
| simulatePoll(); |
| }}, |
| 0, pollPeriod.toMilliseconds(), TimeUnit.MILLISECONDS); |
| } |
| |
| protected void stopPolling() { |
| if (executor != null) { |
| executor.shutdownNow(); |
| executor = null; |
| } |
| } |
| |
| protected void simulatePoll() { |
| String val = "val-" + System.currentTimeMillis(); |
| Predicate<? super Entity> filter = config().get(ENTITY_FILTER); |
| Integer numSensors = config().get(NUM_SENSORS); |
| Iterable<Entity> entities = Iterables.filter(getManagementContext().getEntityManager().getEntities(), filter); |
| for (Entity entity : entities) { |
| for (int i = 0; i < numSensors; i++) { |
| AttributeSensor<String> sensor = Sensors.newStringSensor("externalSensor"+i); |
| entity.sensors().set(sensor, val); |
| } |
| } |
| } |
| } |