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 conf = new File(root, "jsvc.properties");
  31         if(conf.exists()) {
  32             try {
  33                 InputStream in = new FileInputStream(conf);
  34                 try {
  35                     sysconfig.load(in);
  36                 } finally {
  37                     in.close();
  38                 }
  39             } catch(IOException e) {
  40                 throw(new RuntimeException(e));
  41             }
  42         }
  43         File lib = new File(root, "lib");
  44         if(lib.exists() && lib.isDirectory()) {
  45             List<URL> jars = new ArrayList<URL>();
  46             for(File f : lib.listFiles()) {
  47                 if(f.isDirectory())
  48                     continue;
  49                 if(!f.canRead())
  50                     continue;
  51                 String nm = f.getName();
  52                 if((nm.length() < 4) || !nm.substring(nm.length() - 4).equals(".jar"))
  53                     continue;
  54                 try {
  55                     jars.add(f.toURI().toURL());
  56                 } catch(MalformedURLException e) {
  57                     throw(new Error(e));
  58                 }
  59             }
  60             this.lib = URLClassLoader.newInstance(jars.toArray(new URL[0]), Environment.class.getClassLoader());
  61         }
  62     }
  63
  64     public ClassLoader libloader() {
  65         if(this.lib == null)
  66             return(Environment.class.getClassLoader());
  67         return(this.lib);
  68     }
  69
  70     public void initvm() {
  71         if(root == null)
  72             return;
  73         File logging = new File(root, "logging.properties");
  74         if(logging.exists() && logging.canRead()) {
  75             try {
  76                 InputStream in = new FileInputStream(logging);
  77                 try {
  78                     java.util.logging.LogManager.getLogManager().readConfiguration(in);
  79                 } finally {
  80                     in.close();
  81                 }
  82             } catch(IOException e) {
  83                 throw(new RuntimeException(e));
  84             }
  85         }
  86     }
  87 }