Adding demo client
This commit is contained in:
Srikanth Srungarapu
Jimmy Xiang
parent
1cf8521191
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77a7925c32
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/**
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hbase.thrift;
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import sun.misc.BASE64Encoder;
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import java.io.UnsupportedEncodingException;
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import java.nio.ByteBuffer;
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import java.nio.charset.CharacterCodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.security.PrivilegedExceptionAction;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.SortedMap;
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import java.util.TreeMap;
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import javax.security.auth.Subject;
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import javax.security.auth.login.AppConfigurationEntry;
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import javax.security.auth.login.Configuration;
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import javax.security.auth.login.LoginContext;
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import org.apache.hadoop.hbase.thrift.generated.AlreadyExists;
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import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor;
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import org.apache.hadoop.hbase.thrift.generated.Hbase;
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import org.apache.hadoop.hbase.thrift.generated.TCell;
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import org.apache.hadoop.hbase.thrift.generated.TRowResult;
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import org.apache.thrift.protocol.TBinaryProtocol;
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import org.apache.thrift.protocol.TProtocol;
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import org.apache.thrift.transport.THttpClient;
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import org.apache.thrift.transport.TSocket;
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import org.apache.thrift.transport.TTransport;
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import org.ietf.jgss.GSSContext;
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import org.ietf.jgss.GSSCredential;
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import org.ietf.jgss.GSSException;
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import org.ietf.jgss.GSSManager;
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import org.ietf.jgss.GSSName;
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import org.ietf.jgss.Oid;
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/**
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* See the instructions under hbase-examples/README.txt
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*/
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public class HttpDoAsClient {
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static protected int port;
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static protected String host;
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CharsetDecoder decoder = null;
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private static boolean secure = false;
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public static void main(String[] args) throws Exception {
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if (args.length < 2 || args.length > 3) {
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System.out.println("Invalid arguments!");
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System.out.println("Usage: DemoClient host port [secure=false]");
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System.exit(-1);
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}
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port = Integer.parseInt(args[1]);
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host = args[0];
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if (args.length > 2) {
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secure = Boolean.parseBoolean(args[2]);
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}
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final HttpDoAsClient client = new HttpDoAsClient();
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Subject.doAs(getSubject(),
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new PrivilegedExceptionAction<Void>() {
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@Override
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public Void run() throws Exception {
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client.run();
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return null;
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}
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});
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}
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HttpDoAsClient() {
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decoder = Charset.forName("UTF-8").newDecoder();
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}
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// Helper to translate byte[]'s to UTF8 strings
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private String utf8(byte[] buf) {
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try {
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return decoder.decode(ByteBuffer.wrap(buf)).toString();
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} catch (CharacterCodingException e) {
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return "[INVALID UTF-8]";
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}
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}
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// Helper to translate strings to UTF8 bytes
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private byte[] bytes(String s) {
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try {
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return s.getBytes("UTF-8");
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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return null;
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}
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}
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private void run() throws Exception {
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TTransport transport = new TSocket(host, port);
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transport.open();
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String url = "http://" + host + ":" + port;
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THttpClient httpClient = new THttpClient(url);
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httpClient.open();
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TProtocol protocol = new TBinaryProtocol(httpClient);
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Hbase.Client client = new Hbase.Client(protocol);
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byte[] t = bytes("demo_table");
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//
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// Scan all tables, look for the demo table and delete it.
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//
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System.out.println("scanning tables...");
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for (ByteBuffer name : refresh(client, httpClient).getTableNames()) {
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System.out.println(" found: " + utf8(name.array()));
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if (utf8(name.array()).equals(utf8(t))) {
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if (client.isTableEnabled(name)) {
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System.out.println(" disabling table: " + utf8(name.array()));
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refresh(client, httpClient).disableTable(name);
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}
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System.out.println(" deleting table: " + utf8(name.array()));
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refresh(client, httpClient).deleteTable(name);
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}
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}
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//
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// Create the demo table with two column families, entry: and unused:
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//
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ArrayList<ColumnDescriptor> columns = new ArrayList<ColumnDescriptor>();
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ColumnDescriptor col;
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col = new ColumnDescriptor();
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col.name = ByteBuffer.wrap(bytes("entry:"));
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col.timeToLive = Integer.MAX_VALUE;
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col.maxVersions = 10;
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columns.add(col);
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col = new ColumnDescriptor();
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col.name = ByteBuffer.wrap(bytes("unused:"));
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col.timeToLive = Integer.MAX_VALUE;
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columns.add(col);
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System.out.println("creating table: " + utf8(t));
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try {
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refresh(client, httpClient).createTable(ByteBuffer.wrap(t), columns);
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} catch (AlreadyExists ae) {
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System.out.println("WARN: " + ae.message);
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}
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System.out.println("column families in " + utf8(t) + ": ");
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Map<ByteBuffer, ColumnDescriptor> columnMap = refresh(client, httpClient)
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.getColumnDescriptors(ByteBuffer.wrap(t));
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for (ColumnDescriptor col2 : columnMap.values()) {
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System.out.println(" column: " + utf8(col2.name.array()) + ", maxVer: " + Integer.toString(col2.maxVersions));
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}
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transport.close();
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httpClient.close();
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}
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private Hbase.Client refresh(Hbase.Client client, THttpClient httpClient) {
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if(secure) {
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httpClient.setCustomHeader("doAs", "hbase");
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try {
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httpClient.setCustomHeader("Authorization", generateTicket());
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} catch (GSSException e) {
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e.printStackTrace();
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}
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}
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return client;
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}
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private String generateTicket() throws GSSException {
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final GSSManager manager = GSSManager.getInstance();
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// Oid for kerberos principal name
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Oid krb5PrincipalOid = new Oid("1.2.840.113554.1.2.2.1");
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Oid KERB_V5_OID = new Oid("1.2.840.113554.1.2.2");
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final GSSName clientName = manager.createName("hbase/node-1.internal@INTERNAL",
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krb5PrincipalOid);
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final GSSCredential clientCred = manager.createCredential(clientName,
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8 * 3600,
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KERB_V5_OID,
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GSSCredential.INITIATE_ONLY);
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final GSSName serverName = manager.createName("hbase/node-1.internal@INTERNAL", krb5PrincipalOid);
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final GSSContext context = manager.createContext(serverName,
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KERB_V5_OID,
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clientCred,
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GSSContext.DEFAULT_LIFETIME);
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context.requestMutualAuth(true);
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context.requestConf(false);
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context.requestInteg(true);
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final byte[] outToken = context.initSecContext(new byte[0], 0, 0);
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StringBuffer outputBuffer = new StringBuffer();
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outputBuffer.append("Negotiate ");
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outputBuffer.append(new BASE64Encoder().encode(outToken).replace("\n", ""));
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System.out.print("Ticket is: " + outputBuffer);
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return outputBuffer.toString();
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}
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private void printVersions(ByteBuffer row, List<TCell> versions) {
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StringBuilder rowStr = new StringBuilder();
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for (TCell cell : versions) {
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rowStr.append(utf8(cell.value.array()));
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rowStr.append("; ");
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}
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System.out.println("row: " + utf8(row.array()) + ", values: " + rowStr);
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}
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private void printRow(TRowResult rowResult) {
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// copy values into a TreeMap to get them in sorted order
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TreeMap<String, TCell> sorted = new TreeMap<String, TCell>();
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for (Map.Entry<ByteBuffer, TCell> column : rowResult.columns.entrySet()) {
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sorted.put(utf8(column.getKey().array()), column.getValue());
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}
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StringBuilder rowStr = new StringBuilder();
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for (SortedMap.Entry<String, TCell> entry : sorted.entrySet()) {
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rowStr.append(entry.getKey());
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rowStr.append(" => ");
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rowStr.append(utf8(entry.getValue().value.array()));
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rowStr.append("; ");
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}
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System.out.println("row: " + utf8(rowResult.row.array()) + ", cols: " + rowStr);
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}
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private void printRow(List<TRowResult> rows) {
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for (TRowResult rowResult : rows) {
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printRow(rowResult);
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}
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}
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static Subject getSubject() throws Exception {
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if (!secure) return new Subject();
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/*
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* To authenticate the DemoClient, kinit should be invoked ahead.
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* Here we try to get the Kerberos credential from the ticket cache.
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*/
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LoginContext context = new LoginContext("", new Subject(), null,
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new Configuration() {
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@Override
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public AppConfigurationEntry[] getAppConfigurationEntry(String name) {
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Map<String, String> options = new HashMap<String, String>();
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options.put("useKeyTab", "false");
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options.put("storeKey", "false");
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options.put("doNotPrompt", "true");
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options.put("useTicketCache", "true");
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options.put("renewTGT", "true");
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options.put("refreshKrb5Config", "true");
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options.put("isInitiator", "true");
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String ticketCache = System.getenv("KRB5CCNAME");
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if (ticketCache != null) {
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options.put("ticketCache", ticketCache);
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}
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options.put("debug", "true");
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return new AppConfigurationEntry[]{
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new AppConfigurationEntry("com.sun.security.auth.module.Krb5LoginModule",
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AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
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options)};
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}
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});
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context.login();
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return context.getSubject();
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}
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}
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