[jboss-dev-forums] [Design of Embedded JBoss] - Need vfs work for the embedded startup

[scott.stark@jboss.org]

In looking at extending the JBossEmbeddedAS work Andrew started to allow for better integration with a profile service, the memory usage and speed of trying to use a jbossas structure from within a large monolithic jar is poor. The jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar which combines most of the jbossas dependencies is ~40Mb.

This little test which is the start of identifying the embedded server locations is taking way too much memory and time:

  |    public void testBootstrapLib()
  |       throws Exception
  |    {
  |       long start = System.currentTimeMillis();
  |       URL jarUrl = JBossEmbeddedAS.class.getProtectionDomain().getCodeSource().getLocation();
  |       System.out.println("JBossEmbeddedAS CodeSource: "+jarUrl);
  |       long now = System.currentTimeMillis();
  |       System.out.println("Elapsed to determine CodeSource: "+(now = start));
  |       // Construct VFS representation
  |       VirtualFile jarVirtualFile = VFS.getRoot(jarUrl);
  |       VirtualFile jbossHome = jarVirtualFile.getChild("embedded");
  |       if(jbossHome == null)
  |          throw new IllegalStateException("Failed to locate child 'embedded' in: "+jarUrl);
  |       URL homeURL = jbossHome.toURL();
  | 
  |       System.out.println("JBOSS_HOME: "+jbossHome);
  |       now = System.currentTimeMillis();
  |       System.out.println("Elapsed to locate child 'embedded' : "+(now - start));
  | 
  |       URL libraryURL = new URL(homeURL, ServerConfig.LIBRARY_URL_SUFFIX);
  |       now = System.currentTimeMillis();
  |       VirtualFile libraryDir = VFS.getRoot(libraryURL);
  |       System.out.println("LIBRARY_URL: "+libraryDir);
  |       List<VirtualFile> jars = libraryDir.getChildren();
  |       if(jars != null)
  |       {
  |          for(VirtualFile jar : jars)
  |          {
  |             URL url = jar.toURL();
  |             System.out.println(jar);
  |          }
  |       }
  |       now = System.currentTimeMillis();
  |       System.out.println("Elapsed to locate/list boot lib: "+(now - start));
  |    }
  | 

The output shows its taking 5+ secs just to get to the point of loading listing the contents of the JBOSS_HOME/lib directory, and this also requires increasing the test memory to 128m:

  | JBossEmbeddedAS CodeSource: file:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar
  | Elapsed to determine CodeSource: 1
  | JBOSS_HOME: ZipEntryHandler at 12724795[path=embedded context=file:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar real=file:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar/embedded]
  | Elapsed to locate child 'embedded' : 759
  | LIBRARY_URL: ZipEntryHandler at 14031599[path= context=vfszip:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar/embedded/lib/ real=vfszip:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar/embedded/lib/]
  | ZipEntryHandler at 3232789[path=empty context=vfszip:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar/embedded/lib/ real=vfszip:/Users/svn/repository.jboss.org/maven2/org/jboss/embedded/jboss-embedded-assembly/0.1.0-SNAPSHOT/jboss-embedded-assembly-0.1.0-SNAPSHOT-embedded.jar/embedded/lib/empty]
  | Elapsed to locate/list boot lib: 5675
  | 

We need to be under a sec and 64Mb to fully boot the embedded server. I'm looking at what is happening. It looks like vfs 2.0.0.CR5 is being pulled in by the current snapshot dependencies. 

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