Improved SCGI server's handling of its environment.

[jsvc.git] / src / dolda / jsvc / scgi / Environment.java

diff --git a/src/dolda/jsvc/scgi/Environment.java b/src/dolda/jsvc/scgi/Environment.java
new file mode 100644 (file)
index 0000000..e91f57a
--- /dev/null
+++ b/src/dolda/jsvc/scgi/Environment.java
@@ -0,0 +1,87 @@
+package dolda.jsvc.scgi;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+public class Environment {
+    public final File root;
+    public final Properties sysconfig = new Properties();
+    private ClassLoader lib = null;
+    
+    public Environment(File root) {
+       this.root = root;
+       if(root != null)
+           loadconfig();
+    }
+    
+    private static File defroot() {
+       File root = new File(System.getProperty("user.home"), ".jsvc");
+       if(root.exists() && root.isDirectory())
+           return(root);
+       return(null);
+    }
+
+    public Environment() {
+       this(defroot());
+    }
+    
+    private void loadconfig() {
+       File conf = new File(root, "jsvc.properties");
+       if(conf.exists()) {
+           try {
+               InputStream in = new FileInputStream(conf);
+               try {
+                   sysconfig.load(in);
+               } finally {
+                   in.close();
+               }
+           } catch(IOException e) {
+               throw(new RuntimeException(e));
+           }
+       }
+       File lib = new File(root, "lib");
+       if(lib.exists() && lib.isDirectory()) {
+           List<URL> jars = new ArrayList<URL>();
+           for(File f : lib.listFiles()) {
+               if(f.isDirectory())
+                   continue;
+               if(!f.canRead())
+                   continue;
+               String nm = f.getName();
+               if((nm.length() < 4) || !nm.substring(nm.length() - 4).equals(".jar"))
+                   continue;
+               try {
+                   jars.add(f.toURI().toURL());
+               } catch(MalformedURLException e) {
+                   throw(new Error(e));
+               }
+           }
+           this.lib = URLClassLoader.newInstance(jars.toArray(new URL[0]), Environment.class.getClassLoader());
+       }
+    }
+    
+    public ClassLoader libloader() {
+       if(this.lib == null)
+           return(Environment.class.getClassLoader());
+       return(this.lib);
+    }
+    
+    public void initvm() {
+       if(root == null)
+           return;
+       File logging = new File(root, "logging.properties");
+       if(logging.exists() && logging.canRead()) {
+           try {
+               InputStream in = new FileInputStream(logging);
+               try {
+                   java.util.logging.LogManager.getLogManager().readConfiguration(in);
+               } finally {
+                   in.close();
+               }
+           } catch(IOException e) {
+               throw(new RuntimeException(e));
+           }
+       }
+    }
+}