| /* |
| * 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.nifi.controller.leader.election; |
| |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * <p> |
| * A LeaderElectionManager to use when running a standalone (un-clustered) NiFi instance |
| * </p> |
| */ |
| public class StandaloneLeaderElectionManager implements LeaderElectionManager { |
| |
| @Override |
| public void start() { |
| } |
| |
| @Override |
| public void register(final String roleName, final LeaderElectionStateChangeListener listener) { |
| } |
| |
| @Override |
| public void register(final String roleName, final LeaderElectionStateChangeListener listener, final String participantId) { |
| } |
| |
| @Override |
| public boolean isActiveParticipant(final String roleName) { |
| return true; |
| } |
| |
| @Override |
| public String getLeader(final String roleName) { |
| return null; |
| } |
| |
| @Override |
| public void unregister(final String roleName) { |
| } |
| |
| @Override |
| public boolean isLeader(final String roleName) { |
| return false; |
| } |
| |
| @Override |
| public boolean isStopped() { |
| return false; |
| } |
| |
| @Override |
| public void stop() { |
| } |
| |
| @Override |
| public Map<String, Integer> getLeadershipChangeCount(final long duration, final TimeUnit timeUnit) { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public long getAveragePollTime(final TimeUnit timeUnit) { |
| return -1L; |
| } |
| |
| @Override |
| public long getMinPollTime(final TimeUnit timeUnit) { |
| return -1L; |
| } |
| |
| @Override |
| public long getMaxPollTime(final TimeUnit timeUnit) { |
| return -1L; |
| } |
| |
| @Override |
| public long getPollCount() { |
| return -1L; |
| } |
| |
| @Override |
| public boolean isLeaderElected(String roleName) { |
| return false; |
| } |
| } |