/
PluginClassLoader.scala
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/
PluginClassLoader.scala
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/**
* sbt-osgi-manager - OSGi development bridge based on Bnd and Tycho.
*
* Copyright (c) 2016 Alexey Aksenov ezh@ezh.msk.ru
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package sbt.osgi.manager.support
import java.net.{ URL, URLClassLoader }
import org.digimead.sbt.util.SLF4JBridge
import sbt.osgi.manager.Plugin
import scala.language.implicitConversions
class PluginClassLoader(internal: Array[URL], external: Array[URL], parent: ClassLoader, reloadPrefix: Seq[String])
extends URLClassLoader(internal, parent) with SLF4JBridge.Loader {
protected val externalURLClassLoader = new URLClassLoader(external)
override def getResource(name: String): URL =
Option(findResource(name)).getOrElse(parent.getResource(name))
@throws(classOf[ClassNotFoundException])
override def loadClass(name: String): Class[_] =
loadClass(name, true)
@throws(classOf[ClassNotFoundException])
override def loadClass(name: String, resolve: Boolean): Class[_] = {
val result = name match {
case this.SLF4JBinderTargetName ⇒
// transform with ASM
val bytecode = loadSLF4JBinder(name)
defineClass(name, bytecode, 0, bytecode.length)
case name if reloadPrefix.find(name.startsWith).nonEmpty ⇒
Option(findLoadedClass(name)) getOrElse {
try findClass(name) catch {
case e: ClassNotFoundException ⇒
// reload with this class loader
loadClass(parent.loadClass(name))
}
}
case name if PluginClassLoader.passToParent.find(name.startsWith).nonEmpty ⇒
// pass to parent
parent.loadClass(name)
case name ⇒
// try to load or pass to parent if we found a name in the externalURLClassLoader
Option(findLoadedClass(name)) getOrElse {
try {
val clazz = findClass(name)
// a bit of debug shit
// if (name.startsWith("org.osgi"))
// println(clazz.getProtectionDomain.getCodeSource.getLocation)
clazz
} catch {
case e: ClassNotFoundException ⇒
// Filter class loading with ClassNotFoundException
externalURLClassLoader.loadClass(name)
parent.loadClass(name)
case e: Throwable ⇒
if (Plugin.debug.nonEmpty)
println("PluginClassLoader exception: " + e)
parent.loadClass(name)
}
}
}
if (resolve) resolveClass(result)
result
}
def loadClass(clazz: Class[_]): Class[_] = {
val is = clazz.getResourceAsStream('/' + clazz.getName().replace('.', '/') + ".class")
val bytes = Stream.continually(is.read).takeWhile(_ != -1).map(_.toByte).toArray
defineClass(clazz.getName, bytes, 0, bytes.length)
}
}
object PluginClassLoader {
implicit def PluginClassLoader2implementation(p: PluginClassLoader.type): PluginClassLoader = p.inner
/** PluginClassLoader implementation. */
lazy val inner = {
getClass.getClassLoader() match {
case loader: URLClassLoader ⇒
val pluginJar = getClass.getProtectionDomain.getCodeSource.getLocation
val internalURLs = pluginJar +: loader.getURLs().filter { url ⇒ PluginClassLoader.internalLibraries.find { url.toString().contains }.nonEmpty }
val externalURLs = loader.getURLs().filter { url ⇒ PluginClassLoader.externalLibraries.find { url.toString().contains }.nonEmpty }
new PluginClassLoader(internalURLs, externalURLs, loader, Seq("sbt.osgi.manager.tycho", "sbt.osgi.manager.bnd"))
case classLoader ⇒
throw new IllegalStateException("Unable to create PluginClassLoader with unexpected parent class loader " + classLoader.getClass)
}
}
/** List of URL parts of libraries that PluginClassLoader must load itself. */
val internalLibraries = Seq(
"org.apache.maven.wagon/wagon-provider-api",
"org.apache.maven/maven-aether-provider",
"org.apache.maven/maven-artifact",
"org.apache.maven/maven-builder-support",
"org.apache.maven/maven-compat",
"org.apache.maven/maven-core",
"org.apache.maven/maven-embedder",
"org.apache.maven/maven-model",
"org.apache.maven/maven-model-builder",
"org.apache.maven/maven-plugin-api",
"org.apache.maven/maven-repository-metadata",
"org.apache.maven/maven-settings",
"org.apache.maven/maven-settings-builder",
"org.codehaus.plexus/plexus-archiver",
"org.codehaus.plexus/plexus-classworlds",
"org.codehaus.plexus/plexus-component-annotations",
"org.codehaus.plexus/plexus-interpolation",
"org.codehaus.plexus/plexus-io",
"org.codehaus.plexus/plexus-utils",
"org.digimead/sbt-osgi-manager",
"org.eclipse.aether/aether-api",
"org.eclipse.aether/aether-connector-basic",
"org.eclipse.aether/aether-impl",
"org.eclipse.aether/aether-spi",
"org.eclipse.aether/aether-transport-file",
"org.eclipse.aether/aether-transport-http",
"org.eclipse.aether/aether-transport-wagon",
"org.eclipse.aether/aether-util",
"org.eclipse.sisu/org.eclipse.sisu.inject",
"org.eclipse.sisu/org.eclipse.sisu.plexus",
"org.eclipse.tycho/org.eclipse.osgi",
"org.eclipse.tycho/org.eclipse.osgi.compatibility.state",
"org.eclipse.tycho/org.eclipse.tycho.core.shared",
"org.eclipse.tycho/org.eclipse.tycho.embedder.shared",
"org.eclipse.tycho/org.eclipse.tycho.p2.resolver.shared",
"org.eclipse.tycho/org.eclipse.tycho.p2.tools.shared",
"org.eclipse.tycho/sisu-equinox-api",
"org.eclipse.tycho/sisu-equinox-embedder",
"org.eclipse.tycho/tycho-core",
"org.eclipse.tycho/tycho-embedder-api",
"org.eclipse.tycho/tycho-metadata-model",
"org.eclipse.tycho/tycho-p2-facade",
"org.slf4j/jcl-over-slf4j",
"org.slf4j/slf4j-api",
"org.sonatype.aether/aether-api",
"org.sonatype.aether/aether-impl",
"org.sonatype.aether/aether-spi",
"org.sonatype.aether/aether-util",
"org.sonatype.plexus/plexus-cipher",
"org.sonatype.plexus/plexus-sec-dispatcher")
/** List of URL parts of libraries that PluginClassLoader must delegate to parent. */
val externalLibraries = Seq(
"aopalliance/aopalliance",
"biz.aQute.bnd/bndlib",
"com.google.guava/guava",
"com.google.inject/guice",
"com.jcraft/jsch",
"com.thoughtworks.paranamer/paranamer",
"commons-cli/commons-cli",
"commons-codec/commons-codec",
"commons-io/commons-io",
"de.pdark/decentxml",
"javax.annotation/jsr250-api",
"javax.enterprise/cdi-api",
"javax.inject/javax.inject",
"jline/jline",
"org.apache.commons/commons-compress",
"org.apache.commons/commons-lang3",
"org.apache.httpcomponents/httpclient",
"org.apache.httpcomponents/httpcore",
"org.digimead/digi-sbt-util",
"org.fusesource.jansi/jansi",
"org.json4s/json4s-ast",
"org.json4s/json4s-core",
//"org.osgi/org.osgi.annotation",
//"org.osgi/org.osgi.core",
//"org.osgi/org.osgi.enterprise",
"org.ow2.asm/asm",
"org.ow2.asm/asm-commons",
"org.ow2.asm/asm-tree",
"org.scala-lang.modules/scala-pickling",
"org.scala-sbt.ivy/ivy",
"org.scala-sbt/actions",
"org.scala-sbt/api",
"org.scala-sbt/apply-macro",
"org.scala-sbt/cache",
"org.scala-sbt/classfile",
"org.scala-sbt/classpath",
"org.scala-sbt/collections",
"org.scala-sbt/command",
"org.scala-sbt/compile",
"org.scala-sbt/compiler-integration",
"org.scala-sbt/compiler-interface",
"org.scala-sbt/compiler-ivy-integration",
"org.scala-sbt/completion",
"org.scala-sbt/control",
"org.scala-sbt/cross",
"org.scala-sbt/incremental-compiler",
"org.scala-sbt/interface",
"org.scala-sbt/io",
"org.scala-sbt/ivy",
"org.scala-sbt/launcher-interface",
"org.scala-sbt/logging",
"org.scala-sbt/logic",
"org.scala-sbt/main-settings",
"org.scala-sbt/main",
"org.scala-sbt/persist",
"org.scala-sbt/process",
"org.scala-sbt/relation",
"org.scala-sbt/run",
"org.scala-sbt/sbt",
"org.scala-sbt/serialization",
"org.scala-sbt/task-system",
"org.scala-sbt/tasks",
"org.scala-sbt/test-agent",
"org.scala-sbt/test-interface",
"org.scala-sbt/testing",
"org.scala-sbt/tracking",
"org.scala-tools.sbinary/sbinary",
"org.scalamacros/quasiquotes",
"org.spire-math/jawn-parser",
"org.spire-math/json4s-support")
/** List of class names than passes to parent class loader. */
val passToParent = Seq(
"java.",
"org.apache.maven.model.Dependency",
"org.digimead.sbt.util.StaticLoggerBinder",
"org.slf4j.ILoggerFactory",
"org.slf4j.spi.LoggerFactoryBinder",
"org.eclipse.tycho.core.ee.shared.ExecutionEnvironmentConfiguration",
"sbt.",
"scala.")
}