Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/105#discussion_r15742373
--- Diff: tajo-client/src/main/java/org/apache/tajo/client/TajoGetConf.java
---
@@ -0,0 +1,173 @@
+/**
+ * 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.tajo.client;
+
+import com.google.protobuf.ServiceException;
+import org.apache.commons.cli.*;
+import org.apache.commons.lang.StringUtils;
+import org.apache.tajo.QueryId;
+import org.apache.tajo.TajoProtos;
+import org.apache.tajo.conf.TajoConf;
+import org.apache.tajo.ipc.ClientProtos.BriefQueryInfo;
+import org.apache.tajo.ipc.ClientProtos.WorkerResourceInfo;
+import org.apache.tajo.util.NetUtils;
+import org.apache.tajo.util.TajoIdUtils;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Writer;
+import java.net.InetSocketAddress;
+import java.sql.SQLException;
+import java.text.DecimalFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+public class TajoGetConf {
+ private static final org.apache.commons.cli.Options options;
+
+ static {
+ options = new Options();
+ options.addOption("h", "host", true, "Tajo server host");
+ options.addOption("p", "port", true, "Tajo server port");
+ options.addOption("masters", null, false, "gets list of tajomasters in
the cluster");
+ options.addOption("confKey", null, true, "gets a specific key from the
configuration");
+ }
+
+ private TajoConf tajoConf;
+ private TajoClient tajoClient;
+ private Writer writer;
+
+ public TajoGetConf(TajoConf tajoConf, Writer writer) {
+ this(tajoConf, writer, null);
+ }
+
+ public TajoGetConf(TajoConf tajoConf, Writer writer, TajoClient
tajoClient) {
+ this.tajoConf = tajoConf;
+ this.writer = writer;
+ this.tajoClient = tajoClient;
+ }
+
+ private void printUsage() {
+ HelpFormatter formatter = new HelpFormatter();
+ formatter.printHelp( "getconf [options]", options );
+ }
+
+ public void runCommand(String[] args) throws Exception {
+ CommandLineParser parser = new PosixParser();
+ CommandLine cmd = parser.parse(options, args);
+
+ String param = "";
+ int cmdType = 0;
+
+ String hostName = null;
+ Integer port = null;
+ if (cmd.hasOption("h")) {
+ hostName = cmd.getOptionValue("h");
+ }
+ if (cmd.hasOption("p")) {
+ port = Integer.parseInt(cmd.getOptionValue("p"));
+ }
+
+ if (cmd.hasOption("masters")) {
+ cmdType = 1;
+ } else if (cmd.hasOption("confKey")) {
+ cmdType = 2;
+ param = cmd.getOptionValue("confKey");
+ }
+
+ // if there is no "-h" option,
+ if(hostName == null) {
+ if
(tajoConf.getVar(TajoConf.ConfVars.TAJO_MASTER_CLIENT_RPC_ADDRESS) != null) {
+ // it checks if the client service address is given in
configuration and distributed mode.
+ // if so, it sets entryAddr.
+ hostName =
tajoConf.getVar(TajoConf.ConfVars.TAJO_MASTER_CLIENT_RPC_ADDRESS).split(":")[0];
+ }
+ }
+ if (port == null) {
+ if
(tajoConf.getVar(TajoConf.ConfVars.TAJO_MASTER_CLIENT_RPC_ADDRESS) != null) {
+ // it checks if the client service address is given in
configuration and distributed mode.
+ // if so, it sets entryAddr.
+ port =
Integer.parseInt(tajoConf.getVar(TajoConf.ConfVars.TAJO_MASTER_CLIENT_RPC_ADDRESS).split(":")[1]);
+ }
+ }
+
+ if (cmdType == 0) {
+ printUsage();
+ return;
+ }
+
+ if ((hostName == null) ^ (port == null)) {
+ return;
+ } else if (hostName != null && port != null) {
+ tajoConf.setVar(TajoConf.ConfVars.TAJO_MASTER_CLIENT_RPC_ADDRESS,
hostName + ":" + port);
+ tajoClient = new TajoClient(tajoConf);
+ } else if (hostName == null && port == null) {
+ tajoClient = new TajoClient(tajoConf);
+ }
+
+ switch (cmdType) {
+ case 1:
+ processMasters(writer);
+ break;
+ case 2:
+ processConfKey(writer, param);
+ break;
+ default:
+ printUsage();
+ break;
+ }
+
+ writer.flush();
+ }
+
+ private void processMasters(Writer writer) throws ParseException,
IOException,
+ ServiceException, SQLException {
+ String confMasterServiceAddr =
tajoConf.getVar(TajoConf.ConfVars.TAJO_MASTER_UMBILICAL_RPC_ADDRESS);
+ InetSocketAddress masterAddress =
NetUtils.createSocketAddr(confMasterServiceAddr);
+ writer.write(masterAddress.getHostName());
+ writer.write("\n");
+ }
+
+ private void processConfKey(Writer writer, String param) throws
ParseException, IOException,
+ ServiceException, SQLException {
+ String value = tajoConf.get(param);
+
+ if (value != null) {
+ writer.write(value);
+ } else {
+ writer.write("Configuration a is missing.");
--- End diff --
It seems to be a typo.
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