content: /*
   * 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 com.aliyun.odps.utils;
  
  import java.io.IOException;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  import com.aliyun.odps.io.DatetimeWritable;
  import com.aliyun.odps.io.NullWritable;
  import com.aliyun.odps.io.Writable;
  
  public class CommonUtils {
  
    private final static String[] ONE_STRING_ARRAY = new String[]{""};
  
    private final static String TIMESTAMP_FORMAT_S = "yyyyMMddHHmmss_SSS";
  
    /**
     * Get a date formatter for timestamp
     * @return new SimpleDateFormat("yyyyMMddHHmmss_SSS")
     */
    public static SimpleDateFormat getTimestampFormat() {
      return new SimpleDateFormat(TIMESTAMP_FORMAT_S);
    }
  
    /**
     * Please consider switch to getTimeStampFormat() which is thread safe.
     */
    @Deprecated
    public final static SimpleDateFormat TIMESTAMP_FORMAT = new SimpleDateFormat(
        TIMESTAMP_FORMAT_S);
  
    private final static NullWritable nullWritable = NullWritable.get();
  
    private final static String DATETIME_FORMAT_S = "yyyy-MM-dd HH:mm:ss";
    /**
     * Get a date formatter for datetime
     * @return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
     */
    public static SimpleDateFormat getDatetimeFormat() {
      return new SimpleDateFormat(DATETIME_FORMAT_S);
    }
    /**
     * Please consider switch to getDatetimeFormat() which is thread safe.
     */
    @Deprecated
    public final static SimpleDateFormat DATETIME_FORMAT = new SimpleDateFormat(
        DATETIME_FORMAT_S);
  
    public static long getPID() {
      String processName = java.lang.management.ManagementFactory
          .getRuntimeMXBean().getName();
      return Long.parseLong(processName.split("@")[0]);
    }
  
    public static String generateMrTaskName() {
      return "console_mr_" + getTimestampFormat().format(new Date());
    }
  
    public static String generateLocalMrTaskName() {
      return "mr_" + getTimestampFormat().format(new Date()) + "_" + getPID();
    }
  
    public static String generateGraphTaskName() {
      return "console_graph_" + getTimestampFormat().format(new Date());
    }
  
    public static String generateBigGraphTaskName() {
      return "console_biggraph_" + getTimestampFormat().format(new Date());
    }
  
    public static String generateLocalGraphTaskName() {
      return "graph_" + getTimestampFormat().format(new Date()) + "_" + getPID();
    }
  
    public static String getCurrentTime() {
      return getDatetimeFormat().format(new Date());
    }
  
    public static void sleep(long millis) {
      try {
        Thread.sleep(millis);
      } catch (InterruptedException e) {
      }
    }
  
    public static String toDelimitedString(Writable[] fields, char delim,
                                           String nullIndicator) {
      StringBuilder buf = new StringBuilder();
      for (int i = 0; i < fields.length; i++) {
        if (i != 0) {
          buf.append(delim);
        }
        Writable field = fields[i];
        if (field == null || field == nullWritable) {
          buf.append(nullIndicator);
        } else {
          buf.append(field.toString());
        }
      }
      return buf.toString();
    }
  
  
    private static Writable parseDateTime(String val) throws IOException {
      try {
        return new DatetimeWritable(Long.parseLong(val));
      } catch (NumberFormatException e) {
        try {
          return new DatetimeWritable(getDatetimeFormat().parse(val).getTime());
        } catch (ParseException ex) {
          throw new IOException("unsupported date time format:" + val);
        }
      }
    }
  
    public static LinkedHashMap<String, String> convertPartSpecToMap(
        String partSpec) {
      LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
      if (partSpec != null && !partSpec.trim().isEmpty()) {
        String[] parts = partSpec.split("/");
        for (String part : parts) {
          String[] ss = part.split("=");
          if (ss.length != 2) {
            throw new RuntimeException("ODPS-0730001: error part spec format: "
                                       + partSpec);
          }
          map.put(ss[0], ss[1]);
        }
      }
      return map;
    }
  
    public static String convertPartSpecMapToString(LinkedHashMap<String, String> partSpecMap) {
      String partSpec = "";
      if (partSpecMap != null) {
        for (Map.Entry<String, String> entry : partSpecMap.entrySet()) {
          if (entry.getKey() == null || entry.getValue() == null) {
            throw new RuntimeException(
                "ODPS-0730001: partition name or value can't be null: "
                + entry.getKey() + "=" + entry.getValue());
          }
          String part = entry.getKey().trim() + "=" + entry.getValue().trim();
          partSpec += (partSpec.isEmpty()) ? part : "/" + part;
        }
      }
      return partSpec;
    }
  
    public static void checkArgument(String name, int value, int lower_bound,
                                     int upper_bound) {
      if (value < lower_bound || value > upper_bound) {
        throw new RuntimeException("Local Run: Value of " + name
                                   + " out of bound, must be in range [" + lower_bound + ","
                                   + upper_bound + "].");
      }
    }
  
    public static String quoteRef(String str) {
      str = str.replace("`", "``");
      return "`" + str + "`";
    }
  
    public static String quoteStr(String str) {
      str = str.replace("'", "\\'");
      return "'" + str + "'";
    }
  }
  