Goal: create and install a bundle at runtime from the clerzza-console
Starting point: Clerezza tdb launcher with additional TinyBundle and its
dependencies installed
Welcome to the Apache Clerezza Console
Console is based on Scala version 2.8.1.final (OpenJDK 64-Bit Server VM,
Java 1.6.0_20).
Type in expressions to have them evaluated.
Hint: To execute a Felix-Shell command prepend ":f "
Type :help for more information.
zz>import org.ops4j.pax.swissbox.tinybundles.core.TinyBundles._
import org.ops4j.pax.swissbox.tinybundles.core.TinyBundles._
zz>val nb = newBundle()
nb: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
zz>class HelloWorld { def hello = println("hello") }
defined class HelloWorld
zz>nb.add(classOf[HelloWorld])
res0: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
zz>nb.set("Some-Key", "some value")
res1: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
zz>import java.io._
import java.io._
zz>nb.add("test-file", new ByteArrayInputStream("some
test-data".getBytes("utf-8")))
res2: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
zz>val in = nb.build(withBnd())
in: java.io.InputStream = java.io.PipedInputStream@5906edd5
zz>val myBundle = bundleContext.installBundle("myBundle", in)
myBundle: org.osgi.framework.Bundle =
BuildByTinyBundlestinybundles7983922728161488712UID [139]
zz>val entries = myBundle.findEntries("/", null, true)
entries: java.util.Enumeration[_] =
org.apache.felix.framework.EntryFilterEnumeration@3aa0d67c
zz>while (entries.hasMoreElements) { out println("Entry:
"+entries.nextElement) }
Entry: bundle://139.0:0/META-INF/
Entry: bundle://139.0:0/META-INF/MANIFEST.MF
Entry:
bundle://139.0:0/line6$object$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$HelloWorld.class
zz>headers(myBundle)
Bnd-LastModified = 1295608733169
Built-By = reto
Bundle-ManifestVersion = 2
Bundle-Name = BuildByTinyBundlestinybundles7983922728161488712UID
Bundle-SymbolicName = BuildByTinyBundlestinybundles7983922728161488712UID
Bundle-Version = 0
Created-By = 1.6.0_20 (Sun Microsystems Inc.)
Generated-By-Ops4j-Pax-From =
BuildByTinyBundlestinybundles7983922728161488712UID
Manifest-Version = 1.0
Originally-Created-By = pax-swissbox-tinybundles-1.3.0
Private-Package = .
Some-Key = some value
SwissboxTinybundlesVersion = pax-swissbox-tinybundles-1.3.0
Tool = Bnd-0.0.313
zz>myBundle.loadClass("line6$object$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$HelloWorld")
java.lang.ClassFormatError: Truncated class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.findClass(ModuleImpl.java:1874)
at
org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:720)
at org.apache.felix.framework.ModuleImpl.access$300(ModuleImpl.java:73)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1735)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at
org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:638)
at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1599)
at
org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:90...zz>
zz>
Well not the surprising that this class created in the shell creates
problems. A bit surpring that the resource "test-file" isn't in the list.
Let's try compiling a class using the compiler service
zz>import org.apache.clerezza.scala.scripting.CompilerService
import org.apache.clerezza.scala.scripting.CompilerService
zz>val cs = $[CompilerService]
cs: org.apache.clerezza.scala.scripting.CompilerService =
org.apache.clerezza.scala.scripting.CompilerService@54075697
zz>val source = """ package foo
| class Hello() {
| def say() { println("hello")}
| }
| """
zz>val chars = source.toCharArray
chars: Array[Char] =
Array( , p, a, c, k, a, g, e, , f, o, o,
, c, l, a, s, s, , H, e, l, l, o, (, ), , {,
, d, e, f, , s, a, y, (, ), , {, , p, r, i, n, t, l, n, (, ", h, e, l, l,
o, ", ), , },
, },
)
zz>val classes = cs.compile(List(chars))
classes: List[Class[_]] = List(class foo.Hello)
zz>val tinyFoo = newBundle()
tinyFoo: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@6ca68dbd
zz>val fooStream = tinyFoo.build(withBnd())
fooStream: java.io.InputStream = java.io.PipedInputStream@fd855ae
zz>val fooBundle = bundleContext.installBundle("fooBundle",
fooStream)
fooBundle: org.osgi.framework.Bundle =
BuildByTinyBundlestinybundles3268593457443402016UID [145]
zz>headers(fooBundle)
Bnd-LastModified = 1295618427023
Built-By = reto
Bundle-ManifestVersion = 2
Bundle-Name = BuildByTinyBundlestinybundles3268593457443402016UID
Bundle-SymbolicName = BuildByTinyBundlestinybundles3268593457443402016UID
Bundle-Version = 0
Created-By = 1.6.0_20 (Sun Microsystems Inc.)
Export-Package = foo
Generated-By-Ops4j-Pax-From =
BuildByTinyBundlestinybundles3268593457443402016UID
Import-Package = foo;resolution:=optional
Manifest-Version = 1.0
Originally-Created-By = pax-swissbox-tinybundles-1.3.0
SwissboxTinybundlesVersion = pax-swissbox-tinybundles-1.3.0
Tool = Bnd-0.0.313
looking good so far, no reconnecting to the shell (ssh -p 8022
admin@localhost) to have the new bundle in the classpath
reto@trisa-laptop:~$ ssh -p 8022 admin@localhost
admin@localhost's password:
Welcome to the Apache Clerezza Console
Console is based on Scala version 2.8.1.final (OpenJDK 64-Bit Server VM,
Java 1.6.0_20).
Type in expressions to have them evaluated.
Hint: To execute a Felix-Shell command prepend ":f "
Type :help for more information.
zz>import foo.Hello
import foo.Hello
zz>val h = new Hello()
error: error while loading Hello, class file 'foo/Hello.class' is broken
(0)
<console>:13: error: foo.Hello does not have a constructor
val h = new Hello()
^
zz>
Well if you read till here, you might have a suggestion on what to try
next...
Cheers,
Reto
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