/*
* 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.util.core.task;
import java.util.Set;
import javax.annotation.Nullable;
import org.apache.brooklyn.api.mgmt.Task;
import org.apache.brooklyn.api.mgmt.TaskAdaptable;
import com.google.common.base.Function;
public class TaskTags {
/** marks a task which is allowed to fail without failing his parent */
public static final String INESSENTIAL_TASK = "inessential";
/** marks a task which is a subtask of another */
public static final String SUB_TASK_TAG = "SUB-TASK";
public static void addTagDynamically(TaskAdaptable<?> task, final Object tag) {
((BasicTask<?>)task.asTask()).applyTagModifier(new Function<Set<Object>, Void>() {
public Void apply(@Nullable Set<Object> input) {
input.add(tag);
return null;
}
});
}
public static void addTagsDynamically(TaskAdaptable<?> task, final Object tag1, final Object ...tags) {
((BasicTask<?>)task.asTask()).applyTagModifier(new Function<Set<Object>, Void>() {
public Void apply(@Nullable Set<Object> input) {
input.add(tag1);
for (Object tag: tags) input.add(tag);
return null;
}
});
}
public static boolean isInessential(Task<?> task) {
return hasTag(task, INESSENTIAL_TASK);
}
public static boolean hasTag(Task<?> task, Object tag) {
return task.getTags().contains(tag);
}
public static <U,V extends TaskAdaptable<U>> V markInessential(V task) {
addTagDynamically(task, INESSENTIAL_TASK);
return task;
}
}