001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.rest.model; 019 020import com.fasterxml.jackson.annotation.JsonProperty; 021import java.io.IOException; 022import java.io.Serializable; 023import java.util.ArrayList; 024import java.util.List; 025import javax.xml.bind.annotation.XmlAccessType; 026import javax.xml.bind.annotation.XmlAccessorType; 027import javax.xml.bind.annotation.XmlElement; 028import javax.xml.bind.annotation.XmlRootElement; 029import org.apache.hadoop.hbase.NamespaceDescriptor; 030import org.apache.hadoop.hbase.client.Admin; 031import org.apache.hadoop.hbase.rest.ProtobufMessageHandler; 032import org.apache.hadoop.hbase.rest.protobuf.generated.NamespacesMessage.Namespaces; 033import org.apache.yetus.audience.InterfaceAudience; 034 035/** 036 * A list of HBase namespaces. 037 * <ul> 038 * <li>Namespace: namespace name</li> 039 * </ul> 040 */ 041@XmlRootElement(name = "Namespaces") 042@XmlAccessorType(XmlAccessType.FIELD) 043@InterfaceAudience.Private 044public class NamespacesModel implements Serializable, ProtobufMessageHandler { 045 046 private static final long serialVersionUID = 1L; 047 048 @JsonProperty("Namespace") 049 @XmlElement(name = "Namespace") 050 private List<String> namespaces = new ArrayList<>(); 051 052 /** 053 * Default constructor. Do not use. 054 */ 055 public NamespacesModel() { 056 } 057 058 /** 059 * Constructor 060 * @param admin the administrative API n 061 */ 062 public NamespacesModel(Admin admin) throws IOException { 063 NamespaceDescriptor[] nds = admin.listNamespaceDescriptors(); 064 namespaces = new ArrayList<>(nds.length); 065 for (NamespaceDescriptor nd : nds) { 066 namespaces.add(nd.getName()); 067 } 068 } 069 070 /** Returns all namespaces */ 071 public List<String> getNamespaces() { 072 return namespaces; 073 } 074 075 /** 076 * @param namespaces the namespace name array 077 */ 078 public void setNamespaces(List<String> namespaces) { 079 this.namespaces = namespaces; 080 } 081 082 /* 083 * (non-Javadoc) 084 * @see java.lang.Object#toString() 085 */ 086 @Override 087 public String toString() { 088 StringBuilder sb = new StringBuilder(); 089 for (String namespace : namespaces) { 090 sb.append(namespace); 091 sb.append("\n"); 092 } 093 return sb.toString(); 094 } 095 096 @Override 097 public byte[] createProtobufOutput() { 098 Namespaces.Builder builder = Namespaces.newBuilder(); 099 builder.addAllNamespace(namespaces); 100 return builder.build().toByteArray(); 101 } 102 103 @Override 104 public ProtobufMessageHandler getObjectFromMessage(byte[] message) throws IOException { 105 Namespaces.Builder builder = Namespaces.newBuilder(); 106 builder.mergeFrom(message); 107 namespaces = builder.getNamespaceList(); 108 return this; 109 } 110}