/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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.linkedin.pinot.minion.executor;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* Registry for all {@link PinotTaskExecutor}.
*/
public class TaskExecutorRegistry {
private final Map<String, Class<? extends PinotTaskExecutor>> _taskExecutorRegistry = new HashMap<>();
public TaskExecutorRegistry() {
// TODO: register all task executors here
// E.g. registerTaskExecutor(DummyTaskExecutor.TASK_TYPE, DummyTaskExecutor.class);
}
/**
* Register a class of task executor.
* <p>The reason why we register the class here is that for each new task we need to initialize a new task executor.
*
* @param taskType Task type
* @param taskExecutorClass Class of task executor to be registered
*/
public void registerTaskExecutorClass(@Nonnull String taskType,
@Nonnull Class<? extends PinotTaskExecutor> taskExecutorClass) {
_taskExecutorRegistry.put(taskType, taskExecutorClass);
}
/**
* Get all registered task types.
*
* @return Set of all registered task types
*/
@Nonnull
public Set<String> getAllTaskTypes() {
return _taskExecutorRegistry.keySet();
}
/**
* Get the class of task executor for the given task type.
*
* @param taskType Task type
* @return Class of task executor for the given task type
*/
@Nullable
public Class<? extends PinotTaskExecutor> getTaskExecutorClass(@Nonnull String taskType) {
return _taskExecutorRegistry.get(taskType);
}
}