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Add parallel effector and parallelize loop effector
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113 changes: 113 additions & 0 deletions
113
core/src/main/java/org/apache/brooklyn/core/effector/composite/ParallelEffector.java
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| /* | ||
| * 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.core.effector.composite; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
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| import org.apache.brooklyn.api.effector.Effector; | ||
| import org.apache.brooklyn.api.entity.Entity; | ||
| import org.apache.brooklyn.api.mgmt.Task; | ||
| import org.apache.brooklyn.config.ConfigKey; | ||
| import org.apache.brooklyn.core.config.ConfigKeys; | ||
| import org.apache.brooklyn.core.effector.AddEffector; | ||
| import org.apache.brooklyn.core.effector.EffectorBody; | ||
| import org.apache.brooklyn.core.effector.Effectors.EffectorBuilder; | ||
| import org.apache.brooklyn.core.entity.EntityInitializers; | ||
| import org.apache.brooklyn.util.core.config.ConfigBag; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import com.google.common.annotations.Beta; | ||
| import com.google.common.base.Preconditions; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.Lists; | ||
| import com.google.common.reflect.TypeToken; | ||
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| /** | ||
| * Execute a sequence of effectors with the same input. | ||
| * | ||
| * @since 0.11.0 | ||
| */ | ||
| @Beta | ||
| public class ParallelEffector extends AbstractCompositeEffector { | ||
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| private static final Logger LOG = LoggerFactory.getLogger(ParallelEffector.class); | ||
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| public static final ConfigKey<List<Object>> PARALLEL = ConfigKeys.newConfigKey( | ||
| new TypeToken<List<Object>>() { }, | ||
| "parallel", | ||
| "Effector details list for the parallel effector", | ||
| ImmutableList.<Object>of()); | ||
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| public ParallelEffector(ConfigBag params) { | ||
| super(newEffectorBuilder(params).build()); | ||
| } | ||
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| public ParallelEffector(Map<?, ?> params) { | ||
| this(ConfigBag.newInstance(params)); | ||
| } | ||
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| public static EffectorBuilder<Object> newEffectorBuilder(ConfigBag params) { | ||
| EffectorBuilder<Object> eff = AddEffector.newEffectorBuilder(Object.class, params); | ||
| EffectorBody<Object> body = new Body(eff.buildAbstract(), params); | ||
| eff.impl(body); | ||
| return eff; | ||
| } | ||
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| protected static class Body extends AbstractCompositeEffector.Body<Object> { | ||
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| public Body(Effector<?> eff, ConfigBag config) { | ||
| super(eff, config); | ||
| Preconditions.checkNotNull(config.getAllConfigRaw().get(PARALLEL.getName()), "Parallel effector names must be supplied when defining this effector"); | ||
| } | ||
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| @Override | ||
| public Object call(final ConfigBag params) { | ||
| synchronized (mutex) { | ||
| LOG.debug("{} called with config {}, params {}", new Object[] { this, config, params }); | ||
| List<Object> effectors = EntityInitializers.resolve(config, PARALLEL); | ||
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| List<Task<?>> tasks = Lists.newArrayList(); | ||
| for (Object effectorDetails : effectors) { | ||
| String effectorName = getEffectorName(effectorDetails); | ||
| String inputArgument = getInputArgument(effectorDetails); | ||
| Entity targetEntity = getTargetEntity(effectorDetails); | ||
| LOG.debug("{} executing {}({}) on {}", new Object[] { this, effectorName, inputArgument, targetEntity }); | ||
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| if (inputArgument == null) { | ||
| throw new IllegalArgumentException("Input is not set for this effector: " + effectorDetails); | ||
| } | ||
| Object input = params.getStringKey(inputArgument); | ||
| params.putStringKey(inputArgument, input); | ||
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| tasks.add(submitEffectorNamed(targetEntity, effectorName, params)); | ||
| } | ||
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| Object result = null; | ||
| for (Task<?> each : tasks) { | ||
| result = each.getUnchecked(); | ||
| } | ||
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| LOG.debug("{} effector {} returned {}", new Object[] { this, effector.getName(), result }); | ||
| return result; | ||
| } | ||
| } | ||
| } | ||
| } |