| // 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.doris.system; |
| |
| import org.apache.doris.catalog.Catalog; |
| import org.apache.doris.common.FeMetaVersion; |
| import org.apache.doris.common.io.Text; |
| import org.apache.doris.common.io.Writable; |
| import org.apache.doris.ha.FrontendNodeType; |
| import org.apache.doris.system.HeartbeatResponse.HbStatus; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| public class Frontend implements Writable { |
| private FrontendNodeType role; |
| private String nodeName; |
| private String host; |
| private int editLogPort; |
| private String version; |
| |
| private int queryPort; |
| private int rpcPort; |
| |
| private long replayedJournalId; |
| private long lastUpdateTime; |
| private String heartbeatErrMsg = ""; |
| |
| private boolean isAlive = false; |
| |
| public Frontend() { |
| } |
| |
| public Frontend(FrontendNodeType role, String nodeName, String host, int editLogPort) { |
| this.role = role; |
| this.nodeName = nodeName; |
| this.host = host; |
| this.editLogPort = editLogPort; |
| } |
| |
| public FrontendNodeType getRole() { |
| return this.role; |
| } |
| |
| public String getHost() { |
| return this.host; |
| } |
| |
| public String getVersion() { |
| return version; |
| } |
| |
| public String getNodeName() { |
| return nodeName; |
| } |
| |
| public int getQueryPort() { |
| return queryPort; |
| } |
| |
| public int getRpcPort() { |
| return rpcPort; |
| } |
| |
| public boolean isAlive() { |
| return isAlive; |
| } |
| |
| public int getEditLogPort() { |
| return this.editLogPort; |
| } |
| |
| public long getReplayedJournalId() { |
| return replayedJournalId; |
| } |
| |
| public String getHeartbeatErrMsg() { |
| return heartbeatErrMsg; |
| } |
| |
| public long getLastUpdateTime() { |
| return lastUpdateTime; |
| } |
| |
| /* |
| * handle Frontend's heartbeat response. |
| * Because the replayed journal id is very likely to be changed at each heartbeat response, |
| * so we simple return true if the heartbeat status is OK. |
| * But if heartbeat status is BAD, only return true if it is the first time to transfer from alive to dead. |
| */ |
| public boolean handleHbResponse(FrontendHbResponse hbResponse) { |
| boolean isChanged = false; |
| if (hbResponse.getStatus() == HbStatus.OK) { |
| isAlive = true; |
| version = hbResponse.getVersion(); |
| queryPort = hbResponse.getQueryPort(); |
| rpcPort = hbResponse.getRpcPort(); |
| replayedJournalId = hbResponse.getReplayedJournalId(); |
| lastUpdateTime = hbResponse.getHbTime(); |
| heartbeatErrMsg = ""; |
| isChanged = true; |
| } else { |
| if (isAlive) { |
| isAlive = false; |
| isChanged = true; |
| } |
| heartbeatErrMsg = hbResponse.getMsg() == null ? "Unknown error" : hbResponse.getMsg(); |
| } |
| return isChanged; |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| Text.writeString(out, role.name()); |
| Text.writeString(out, host); |
| out.writeInt(editLogPort); |
| Text.writeString(out, nodeName); |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| role = FrontendNodeType.valueOf(Text.readString(in)); |
| if (role == FrontendNodeType.REPLICA) { |
| // this is for compatibility. |
| // we changed REPLICA to FOLLOWER |
| role = FrontendNodeType.FOLLOWER; |
| } |
| host = Text.readString(in); |
| editLogPort = in.readInt(); |
| if (Catalog.getCurrentCatalogJournalVersion() >= FeMetaVersion.VERSION_41) { |
| nodeName = Text.readString(in); |
| } else { |
| nodeName = Catalog.genFeNodeName(host, editLogPort, true /* old style */); |
| } |
| } |
| |
| public static Frontend read(DataInput in) throws IOException { |
| Frontend frontend = new Frontend(); |
| frontend.readFields(in); |
| return frontend; |
| } |
| |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("name: ").append(nodeName).append(", role: ").append(role.name()); |
| sb.append(", ").append(host + ":" + editLogPort); |
| return sb.toString(); |
| } |
| } |