org.argeo.init/src/org/argeo/init/osgi/OsgiBootUtils.java

   1 package org.argeo.init.osgi;
   2
   3 import java.text.DateFormat;
   4 import java.text.SimpleDateFormat;
   5 import java.util.ArrayList;
   6 import java.util.Date;
   7 import java.util.HashMap;
   8 import java.util.List;
   9 import java.util.Map;
  10 import java.util.Optional;
  11 import java.util.ServiceLoader;
  12 import java.util.StringTokenizer;
  13
  14 import org.osgi.framework.Bundle;
  15 import org.osgi.framework.BundleException;
  16 import org.osgi.framework.launch.Framework;
  17 import org.osgi.framework.launch.FrameworkFactory;
  18
  19 /** Utilities, mostly related to logging. */
  20 public class OsgiBootUtils {
  21         /** ISO8601 (as per log4j) and difference to UTC */
  22         private static DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS Z");
  23
  24         static boolean debug = System.getProperty(OsgiBoot.PROP_ARGEO_OSGI_BOOT_DEBUG) == null ? false
  25                         : !System.getProperty(OsgiBoot.PROP_ARGEO_OSGI_BOOT_DEBUG).trim().equals("false");
  26
  27         public static void info(Object obj) {
  28                 System.out.println("# OSGiBOOT      # " + dateFormat.format(new Date()) + " # " + obj);
  29         }
  30
  31         public static void debug(Object obj) {
  32                 if (debug)
  33                         System.out.println("# OSGiBOOT DBG  # " + dateFormat.format(new Date()) + " # " + obj);
  34         }
  35
  36         public static void warn(Object obj) {
  37                 System.out.println("# OSGiBOOT WARN # " + dateFormat.format(new Date()) + " # " + obj);
  38         }
  39
  40         public static void error(Object obj, Throwable e) {
  41                 System.err.println("# OSGiBOOT ERR  # " + dateFormat.format(new Date()) + " # " + obj);
  42                 if (e != null)
  43                         e.printStackTrace();
  44         }
  45
  46         public static boolean isDebug() {
  47                 return debug;
  48         }
  49
  50         public static String stateAsString(int state) {
  51                 switch (state) {
  52                 case Bundle.UNINSTALLED:
  53                         return "UNINSTALLED";
  54                 case Bundle.INSTALLED:
  55                         return "INSTALLED";
  56                 case Bundle.RESOLVED:
  57                         return "RESOLVED";
  58                 case Bundle.STARTING:
  59                         return "STARTING";
  60                 case Bundle.ACTIVE:
  61                         return "ACTIVE";
  62                 case Bundle.STOPPING:
  63                         return "STOPPING";
  64                 default:
  65                         return Integer.toString(state);
  66                 }
  67         }
  68
  69         /**
  70          * @return ==0: versions are identical, &lt;0: tested version is newer, &gt;0:
  71          *         currentVersion is newer.
  72          */
  73         public static int compareVersions(String currentVersion, String testedVersion) {
  74                 List<String> cToks = new ArrayList<String>();
  75                 StringTokenizer cSt = new StringTokenizer(currentVersion, ".");
  76                 while (cSt.hasMoreTokens())
  77                         cToks.add(cSt.nextToken());
  78                 List<String> tToks = new ArrayList<String>();
  79                 StringTokenizer tSt = new StringTokenizer(currentVersion, ".");
  80                 while (tSt.hasMoreTokens())
  81                         tToks.add(tSt.nextToken());
  82
  83                 int comp = 0;
  84                 comp: for (int i = 0; i < cToks.size(); i++) {
  85                         if (tToks.size() <= i) {
  86                                 // equals until then, tested shorter
  87                                 comp = 1;
  88                                 break comp;
  89                         }
  90
  91                         String c = (String) cToks.get(i);
  92                         String t = (String) tToks.get(i);
  93
  94                         try {
  95                                 int cInt = Integer.parseInt(c);
  96                                 int tInt = Integer.parseInt(t);
  97                                 if (cInt == tInt)
  98                                         continue comp;
  99                                 else {
 100                                         comp = (cInt - tInt);
 101                                         break comp;
 102                                 }
 103                         } catch (NumberFormatException e) {
 104                                 if (c.equals(t))
 105                                         continue comp;
 106                                 else {
 107                                         comp = c.compareTo(t);
 108                                         break comp;
 109                                 }
 110                         }
 111                 }
 112
 113                 if (comp == 0 && tToks.size() > cToks.size()) {
 114                         // equals until then, current shorter
 115                         comp = -1;
 116                 }
 117
 118                 return comp;
 119         }
 120
 121         public static Framework launch(Map<String, String> configuration) {
 122                 Optional<FrameworkFactory> frameworkFactory = ServiceLoader.load(FrameworkFactory.class).findFirst();
 123                 if (frameworkFactory.isEmpty())
 124                         throw new IllegalStateException("No framework factory found");
 125                 return launch(frameworkFactory.get(), configuration);
 126         }
 127
 128         /** Launch an OSGi framework. */
 129         public static Framework launch(FrameworkFactory frameworkFactory, Map<String, String> configuration) {
 130                 // start OSGi
 131                 Framework framework = frameworkFactory.newFramework(configuration);
 132                 try {
 133                         framework.start();
 134                 } catch (BundleException e) {
 135                         throw new IllegalStateException("Cannot start OSGi framework", e);
 136                 }
 137                 return framework;
 138         }
 139
 140         public static Map<String, String> equinoxArgsToConfiguration(String[] args) {
 141                 // FIXME implement it
 142                 return new HashMap<>();
 143         }
 144
 145 }