e.0.6.source-code.CordaCaplet Maven / Gradle / Ivy
// Due to Capsule being in the default package, which cannot be imported, this caplet
// must also be in the default package. When using Kotlin there are a whole host of exceptions
// trying to construct this from Capsule, so it is written in Java.
import org.apache.commons.io.FilenameUtils;
import java.io.File;
import java.nio.file.Path;
import java.util.List;
import java.util.Map;
public class CordaCaplet extends Capsule {
protected CordaCaplet(Capsule pred) {
super(pred);
}
/**
* Overriding the Caplet classpath generation via the intended interface in Capsule.
*/
@Override
@SuppressWarnings("unchecked")
protected T attribute(Map.Entry attr) {
// Equality is used here because Capsule never instantiates these attributes but instead reuses the ones
// defined as public static final fields on the Capsule class, therefore referential equality is safe.
if(ATTR_APP_CLASS_PATH == attr) {
T cp = super.attribute(attr);
List classpath = augmentClasspath((List) cp, "plugins");
return (T) augmentClasspath(classpath, "dependencies");
}
return super.attribute(attr);
}
// TODO: Make directory configurable via the capsule manifest.
// TODO: Add working directory variable to capsules string replacement variables.
private List augmentClasspath(List classpath, String dirName) {
File dir = new File(dirName);
if(!dir.exists()) {
dir.mkdir();
}
File[] files = dir.listFiles();
for (File file : files) {
if (file.isFile() && isJAR(file)) {
classpath.add(file.toPath().toAbsolutePath());
}
}
return classpath;
}
private Boolean isJAR(File file) {
return file.getName().toLowerCase().endsWith(".jar");
}
}