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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.plugin.osgi
import ExportPackages.Export
import util.control.Exception
/**
* @author tonytv
*/
object ImportPackages {
case class Import(packageName : String, version : Option[String]) {
val majorMinorMicroVersion = Exception.handling(classOf[NumberFormatException]).
by( e => throw new IllegalArgumentException(
"Invalid version number '%s' for package '%s'.".format(version.get, packageName), e)) {
version map { _.split('.') take 3 map {_.toInt} }
}
def majorVersion = majorMinorMicroVersion map { _.head }
// TODO: Detecting guava packages should be based on Bundle-SymbolicName, not package name.
def importVersionRange = {
def upperLimit =
if (isGuavaPackage) InfiniteVersion // guava increases major version for each release
else majorVersion.get + 1
version map (v => "[%s,%s)".format(majorMinorMicroVersion.get.mkString("."), upperLimit))
}
def isGuavaPackage = packageName.equals(GuavaBasePackage) || packageName.startsWith(GuavaBasePackage + ".")
def asOsgiImport = packageName + (importVersionRange map {";version=\"" + _ + '"'} getOrElse(""))
}
val GuavaBasePackage = "com.google.common"
val InfiniteVersion = 99999
def calculateImports(referencedPackages : Set[String],
implementedPackages : Set[String],
exportedPackages : Map[String, Export]) : Map[String, Import] = {
(for {
undefinedPackage <- referencedPackages diff implementedPackages
export <- exportedPackages.get(undefinedPackage)
} yield undefinedPackage -> Import(undefinedPackage, version(export)))(
collection.breakOut)
}
def version(export: Export): Option[String] =
export.parameters.find(_.name == "version").map(_.value)
}
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