| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.ozone.container.common.helpers; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.UUID; |
| |
| import org.apache.commons.collections.CollectionUtils; |
| import org.apache.commons.collections.MapUtils; |
| import org.apache.hadoop.hdds.protocol.DatanodeDetails; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos; |
| import org.yaml.snakeyaml.DumperOptions; |
| import org.yaml.snakeyaml.Yaml; |
| |
| /** |
| * Class for creating datanode.id file in yaml format. |
| */ |
| public final class DatanodeIdYaml { |
| |
| private DatanodeIdYaml() { |
| // static helper methods only, no state. |
| } |
| |
| /** |
| * Creates a yaml file using DatnodeDetails. This method expects the path |
| * validation to be performed by the caller. |
| * |
| * @param datanodeDetails {@link DatanodeDetails} |
| * @param path Path to datnode.id file |
| */ |
| public static void createDatanodeIdFile(DatanodeDetails datanodeDetails, |
| File path) throws IOException { |
| DumperOptions options = new DumperOptions(); |
| options.setPrettyFlow(true); |
| options.setDefaultFlowStyle(DumperOptions.FlowStyle.FLOW); |
| Yaml yaml = new Yaml(options); |
| |
| try (Writer writer = new OutputStreamWriter( |
| new FileOutputStream(path), StandardCharsets.UTF_8)) { |
| yaml.dump(getDatanodeDetailsYaml(datanodeDetails), writer); |
| } |
| } |
| |
| /** |
| * Read datanode.id from file. |
| */ |
| public static DatanodeDetails readDatanodeIdFile(File path) |
| throws IOException { |
| DatanodeDetails datanodeDetails; |
| try (FileInputStream inputFileStream = new FileInputStream(path)) { |
| Yaml yaml = new Yaml(); |
| DatanodeDetailsYaml datanodeDetailsYaml; |
| try { |
| datanodeDetailsYaml = |
| yaml.loadAs(inputFileStream, DatanodeDetailsYaml.class); |
| } catch (Exception e) { |
| throw new IOException("Unable to parse yaml file.", e); |
| } |
| |
| DatanodeDetails.Builder builder = DatanodeDetails.newBuilder(); |
| builder.setUuid(UUID.fromString(datanodeDetailsYaml.getUuid())) |
| .setIpAddress(datanodeDetailsYaml.getIpAddress()) |
| .setHostName(datanodeDetailsYaml.getHostName()) |
| .setCertSerialId(datanodeDetailsYaml.getCertSerialId()); |
| if (datanodeDetailsYaml.getPersistedOpState() != null) { |
| builder.setPersistedOpState(HddsProtos.NodeOperationalState.valueOf( |
| datanodeDetailsYaml.getPersistedOpState())); |
| } |
| builder.setPersistedOpStateExpiry( |
| datanodeDetailsYaml.getPersistedOpStateExpiryEpochSec()); |
| |
| if (!MapUtils.isEmpty(datanodeDetailsYaml.getPortDetails())) { |
| for (Map.Entry<String, Integer> portEntry : |
| datanodeDetailsYaml.getPortDetails().entrySet()) { |
| builder.addPort(DatanodeDetails.newPort( |
| DatanodeDetails.Port.Name.valueOf(portEntry.getKey()), |
| portEntry.getValue())); |
| } |
| } |
| datanodeDetails = builder.build(); |
| } |
| |
| return datanodeDetails; |
| } |
| |
| /** |
| * Datanode details bean to be written to the yaml file. |
| */ |
| public static class DatanodeDetailsYaml { |
| private String uuid; |
| private String ipAddress; |
| private String hostName; |
| private String certSerialId; |
| private String persistedOpState; |
| private long persistedOpStateExpiryEpochSec = 0; |
| private Map<String, Integer> portDetails; |
| |
| public DatanodeDetailsYaml() { |
| // Needed for snake-yaml introspection. |
| } |
| |
| private DatanodeDetailsYaml(String uuid, String ipAddress, |
| String hostName, String certSerialId, |
| String persistedOpState, |
| long persistedOpStateExpiryEpochSec, |
| Map<String, Integer> portDetails) { |
| this.uuid = uuid; |
| this.ipAddress = ipAddress; |
| this.hostName = hostName; |
| this.certSerialId = certSerialId; |
| this.persistedOpState = persistedOpState; |
| this.persistedOpStateExpiryEpochSec = persistedOpStateExpiryEpochSec; |
| this.portDetails = portDetails; |
| } |
| |
| public String getUuid() { |
| return uuid; |
| } |
| |
| public String getIpAddress() { |
| return ipAddress; |
| } |
| |
| public String getHostName() { |
| return hostName; |
| } |
| |
| public String getCertSerialId() { |
| return certSerialId; |
| } |
| |
| public String getPersistedOpState() { |
| return persistedOpState; |
| } |
| |
| public long getPersistedOpStateExpiryEpochSec() { |
| return persistedOpStateExpiryEpochSec; |
| } |
| |
| public Map<String, Integer> getPortDetails() { |
| return portDetails; |
| } |
| |
| public void setUuid(String uuid) { |
| this.uuid = uuid; |
| } |
| |
| public void setIpAddress(String ipAddress) { |
| this.ipAddress = ipAddress; |
| } |
| |
| public void setHostName(String hostName) { |
| this.hostName = hostName; |
| } |
| |
| public void setCertSerialId(String certSerialId) { |
| this.certSerialId = certSerialId; |
| } |
| |
| public void setPersistedOpState(String persistedOpState) { |
| this.persistedOpState = persistedOpState; |
| } |
| |
| public void setPersistedOpStateExpiryEpochSec(long opStateExpiryEpochSec) { |
| this.persistedOpStateExpiryEpochSec = opStateExpiryEpochSec; |
| } |
| |
| public void setPortDetails(Map<String, Integer> portDetails) { |
| this.portDetails = portDetails; |
| } |
| } |
| |
| private static DatanodeDetailsYaml getDatanodeDetailsYaml( |
| DatanodeDetails datanodeDetails) { |
| |
| Map<String, Integer> portDetails = new LinkedHashMap<>(); |
| if (!CollectionUtils.isEmpty(datanodeDetails.getPorts())) { |
| for (DatanodeDetails.Port port : datanodeDetails.getPorts()) { |
| portDetails.put(port.getName().toString(), port.getValue()); |
| } |
| } |
| |
| String persistedOpString = null; |
| if (datanodeDetails.getPersistedOpState() != null) { |
| persistedOpString = datanodeDetails.getPersistedOpState().name(); |
| } |
| return new DatanodeDetailsYaml( |
| datanodeDetails.getUuid().toString(), |
| datanodeDetails.getIpAddress(), |
| datanodeDetails.getHostName(), |
| datanodeDetails.getCertSerialId(), |
| persistedOpString, |
| datanodeDetails.getPersistedOpStateExpiryEpochSec(), |
| portDetails); |
| } |
| } |