| /** |
| * 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.hadoop.hdfs.server.federation.store.records; |
| |
| import java.io.IOException; |
| import java.util.SortedMap; |
| import java.util.TreeMap; |
| |
| import org.apache.hadoop.hdfs.server.federation.router.FederationUtil; |
| import org.apache.hadoop.hdfs.server.federation.router.RouterServiceState; |
| import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreSerializer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Entry to log the state of a |
| * {@link org.apache.hadoop.hdfs.server.federation.router.Router Router} in the |
| * {@link org.apache.hadoop.hdfs.server.federation.store.StateStoreService |
| * FederationStateStoreService}. |
| */ |
| public abstract class RouterState extends BaseRecord { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(RouterState.class); |
| |
| /** Expiration time in ms for this entry. */ |
| private static long expirationMs; |
| |
| /** |
| * Constructors. |
| */ |
| public RouterState() { |
| super(); |
| } |
| |
| public static RouterState newInstance() { |
| RouterState record = StateStoreSerializer.newRecord(RouterState.class); |
| record.init(); |
| return record; |
| } |
| |
| public static RouterState newInstance(String addr, long startTime, |
| RouterServiceState status) { |
| RouterState record = newInstance(); |
| record.setDateStarted(startTime); |
| record.setAddress(addr); |
| record.setStatus(status); |
| record.setCompileInfo(FederationUtil.getCompileInfo()); |
| record.setVersion(FederationUtil.getVersion()); |
| return record; |
| } |
| |
| public abstract void setAddress(String address); |
| |
| public abstract void setDateStarted(long dateStarted); |
| |
| public abstract String getAddress(); |
| |
| public abstract StateStoreVersion getStateStoreVersion() throws IOException; |
| |
| public abstract void setStateStoreVersion(StateStoreVersion version); |
| |
| public abstract RouterServiceState getStatus(); |
| |
| public abstract void setStatus(RouterServiceState newStatus); |
| |
| public abstract String getVersion(); |
| |
| public abstract void setVersion(String version); |
| |
| public abstract String getCompileInfo(); |
| |
| public abstract void setCompileInfo(String info); |
| |
| public abstract long getDateStarted(); |
| |
| /** |
| * Get the identifier for the Router. It uses the address. |
| * |
| * @return Identifier for the Router. |
| */ |
| public String getRouterId() { |
| return getAddress(); |
| } |
| |
| @Override |
| public boolean like(BaseRecord o) { |
| if (o instanceof RouterState) { |
| RouterState other = (RouterState)o; |
| if (getAddress() != null && |
| !getAddress().equals(other.getAddress())) { |
| return false; |
| } |
| if (getStatus() != null && |
| !getStatus().equals(other.getStatus())) { |
| return false; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return getAddress() + " -> " + getStatus() + "," + getVersion(); |
| } |
| |
| @Override |
| public SortedMap<String, String> getPrimaryKeys() { |
| SortedMap<String, String> map = new TreeMap<>(); |
| map.put("address", getAddress()); |
| return map; |
| } |
| |
| @Override |
| public void validate() { |
| super.validate(); |
| if ((getAddress() == null || getAddress().length() == 0) && |
| getStatus() != RouterServiceState.INITIALIZING) { |
| throw new IllegalArgumentException( |
| "Invalid router entry, no address specified " + this); |
| } |
| } |
| |
| @Override |
| public int compareTo(BaseRecord other) { |
| if (other == null) { |
| return -1; |
| } else if (other instanceof RouterState) { |
| RouterState router = (RouterState) other; |
| return this.getAddress().compareTo(router.getAddress()); |
| } else { |
| return super.compareTo(other); |
| } |
| } |
| |
| @Override |
| public boolean checkExpired(long currentTime) { |
| if (super.checkExpired(currentTime)) { |
| setStatus(RouterServiceState.EXPIRED); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public long getExpirationMs() { |
| return RouterState.expirationMs; |
| } |
| |
| public static void setExpirationMs(long time) { |
| RouterState.expirationMs = time; |
| } |
| } |