/*
* Copyright 2016 the original author or authors.
*
* 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 org.gradle.internal.serialize;
import org.gradle.api.Transformer;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.io.ClassLoaderObjectInputStream;
import java.io.IOException;
import java.io.InputStream;
public class ExceptionReplacingObjectInputStream extends ClassLoaderObjectInputStream {
private Transformer<Object, Object> objectTransformer = new Transformer<Object, Object>() {
@Override
public Object transform(Object o) {
try {
return doResolveObject(o);
} catch (IOException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
};
public ExceptionReplacingObjectInputStream(InputStream inputSteam, ClassLoader classLoader) throws IOException {
super(inputSteam, classLoader);
enableResolveObject(true);
}
public final Transformer<ExceptionReplacingObjectInputStream, InputStream> getObjectInputStreamCreator() {
return new Transformer<ExceptionReplacingObjectInputStream, InputStream>() {
@Override
public ExceptionReplacingObjectInputStream transform(InputStream inputStream) {
try {
return createNewInstance(inputStream);
} catch (IOException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
};
}
protected ExceptionReplacingObjectInputStream createNewInstance(InputStream inputStream) throws IOException {
return new ExceptionReplacingObjectInputStream(inputStream, getClassLoader());
}
@Override
protected final Object resolveObject(Object obj) throws IOException {
return getObjectTransformer().transform(obj);
}
protected Object doResolveObject(Object obj) throws IOException {
if (obj instanceof TopLevelExceptionPlaceholder) {
return ((ExceptionPlaceholder) obj).read(getClassNameTransformer(), getObjectInputStreamCreator());
}
return obj;
}
protected final Transformer<Class<?>, String> getClassNameTransformer() {
return new Transformer<Class<?>, String>() {
@Override
public Class<?> transform(String type) {
try {
return lookupClass(type);
} catch (ClassNotFoundException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
};
}
protected Class<?> lookupClass(String type) throws ClassNotFoundException {
return getClassLoader().loadClass(type);
}
public Transformer<Object, Object> getObjectTransformer() {
return objectTransformer;
}
public void setObjectTransformer(Transformer<Object, Object> objectTransformer) {
this.objectTransformer = objectTransformer;
}
}