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.yetus.audience.InterfaceAudience; 033 034import org.apache.hadoop.hbase.shaded.rest.protobuf.generated.NamespacesMessage.Namespaces; 035 036/** 037 * A list of HBase namespaces. 038 * <ul> 039 * <li>Namespace: namespace name</li> 040 * </ul> 041 */ 042@XmlRootElement(name = "Namespaces") 043@XmlAccessorType(XmlAccessType.FIELD) 044@InterfaceAudience.Private 045public class NamespacesModel implements Serializable, ProtobufMessageHandler { 046 047 private static final long serialVersionUID = 1L; 048 049 @JsonProperty("Namespace") 050 @XmlElement(name = "Namespace") 051 private List<String> namespaces = new ArrayList<>(); 052 053 /** 054 * Default constructor. Do not use. 055 */ 056 public NamespacesModel() { 057 } 058 059 /** 060 * Constructor 061 * @param admin the administrative API 062 */ 063 public NamespacesModel(Admin admin) throws IOException { 064 NamespaceDescriptor[] nds = admin.listNamespaceDescriptors(); 065 namespaces = new ArrayList<>(nds.length); 066 for (NamespaceDescriptor nd : nds) { 067 namespaces.add(nd.getName()); 068 } 069 } 070 071 /** Returns all namespaces */ 072 public List<String> getNamespaces() { 073 return namespaces; 074 } 075 076 /** 077 * @param namespaces the namespace name array 078 */ 079 public void setNamespaces(List<String> namespaces) { 080 this.namespaces = namespaces; 081 } 082 083 /* 084 * (non-Javadoc) 085 * @see java.lang.Object#toString() 086 */ 087 @Override 088 public String toString() { 089 StringBuilder sb = new StringBuilder(); 090 for (String namespace : namespaces) { 091 sb.append(namespace); 092 sb.append("\n"); 093 } 094 return sb.toString(); 095 } 096 097 @Override 098 public byte[] createProtobufOutput() { 099 Namespaces.Builder builder = Namespaces.newBuilder(); 100 builder.addAllNamespace(namespaces); 101 return builder.build().toByteArray(); 102 } 103 104 @Override 105 public ProtobufMessageHandler getObjectFromMessage(byte[] message) throws IOException { 106 Namespaces.Builder builder = Namespaces.newBuilder(); 107 builder.mergeFrom(message); 108 namespaces = builder.getNamespaceList(); 109 return this; 110 } 111}