osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.osgi.boot;
  18
  19 import java.text.DateFormat;
  20 import java.text.SimpleDateFormat;
  21 import java.util.Date;
  22
  23 /** Utilities, mostly related to logging. */
  24 public class OsgiBootUtils {
  25         /** ISO8601 (as per log4j) and difference to UTC */
  26         private static DateFormat dateFormat = new SimpleDateFormat(
  27                         "yyyy-MM-dd HH:mm:ss,SSS Z");
  28
  29         public static void info(Object obj) {
  30                 System.out.println("# OSGiBOOT      # " + dateFormat.format(new Date())
  31                                 + " # " + obj);
  32         }
  33
  34         public static void debug(Object obj) {
  35                 System.out.println("# OSGiBOOT DBG  # " + dateFormat.format(new Date())
  36                                 + " # " + obj);
  37         }
  38
  39         public static void warn(Object obj) {
  40                 System.out.println("# OSGiBOOT WARN # " + dateFormat.format(new Date())
  41                                 + " # " + obj);
  42         }
  43
  44         /**
  45          * Gets a property value
  46          *
  47          * @return null when defaultValue is ""
  48          */
  49         public static String getProperty(String name, String defaultValue) {
  50                 final String value;
  51                 if (defaultValue != null)
  52                         value = System.getProperty(name, defaultValue);
  53                 else
  54                         value = System.getProperty(name);
  55
  56                 if (value == null || value.equals(""))
  57                         return null;
  58                 else
  59                         return value;
  60         }
  61
  62         public static String getProperty(String name) {
  63                 return getProperty(name, null);
  64         }
  65
  66 }