src/dolda/jsvc/scgi/Environment.java

   1 package dolda.jsvc.scgi;
   2
   3 import java.io.*;
   4 import java.net.*;
   5 import java.util.*;
   6
   7 public class Environment {
   8     public final File root;
   9     public final Properties sysconfig = new Properties();
  10     private ClassLoader lib = null;
  11
  12     public Environment(File root) {
  13         this.root = root;
  14         if(root != null)
  15             loadconfig();
  16     }
  17
  18     private static File defroot() {
  19         File root = new File(System.getProperty("user.home"), ".jsvc");
  20         if(root.exists() && root.isDirectory())
  21             return(root);
  22         return(null);
  23     }
  24
  25     public Environment() {
  26         this(defroot());
  27     }
  28
  29     private void loadconfig() {
  30         File sroot = new File(root, "store");
  31         sysconfig.put("jsvc.storage", "file:" + sroot.getPath());
  32         File conf = new File(root, "jsvc.properties");
  33         if(conf.exists()) {
  34             try {
  35                 InputStream in = new FileInputStream(conf);
  36                 try {
  37                     sysconfig.load(in);
  38                 } finally {
  39                     in.close();
  40                 }
  41             } catch(IOException e) {
  42                 throw(new RuntimeException(e));
  43             }
  44         }
  45         File lib = new File(root, "lib");
  46         if(lib.exists() && lib.isDirectory()) {
  47             List<URL> jars = new ArrayList<URL>();
  48             for(File f : lib.listFiles()) {
  49                 if(f.isDirectory())
  50                     continue;
  51                 if(!f.canRead())
  52                     continue;
  53                 String nm = f.getName();
  54                 if((nm.length() < 4) || !nm.substring(nm.length() - 4).equals(".jar"))
  55                     continue;
  56                 try {
  57                     jars.add(f.toURI().toURL());
  58                 } catch(MalformedURLException e) {
  59                     throw(new Error(e));
  60                 }
  61             }
  62             this.lib = URLClassLoader.newInstance(jars.toArray(new URL[0]), Environment.class.getClassLoader());
  63         }
  64     }
  65
  66     public ClassLoader libloader() {
  67         if(this.lib == null)
  68             return(Environment.class.getClassLoader());
  69         return(this.lib);
  70     }
  71
  72     public void initvm() {
  73         if(root == null)
  74             return;
  75         File logging = new File(root, "logging.properties");
  76         if(logging.exists() && logging.canRead()) {
  77             try {
  78                 InputStream in = new FileInputStream(logging);
  79                 try {
  80                     java.util.logging.LogManager.getLogManager().readConfiguration(in);
  81                 } finally {
  82                     in.close();
  83                 }
  84             } catch(IOException e) {
  85                 throw(new RuntimeException(e));
  86             }
  87         }
  88     }
  89 }