org.nustaq.serialization.serializers.FSTThrowableSerializer Maven / Gradle / Ivy

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A fast java serialization drop in-replacement and some serialization based utils such as Structs and OffHeap Memory.

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package org.nustaq.serialization.serializers;

import org.nustaq.serialization.FSTBasicObjectSerializer;
import org.nustaq.serialization.FSTClazzInfo;
import org.nustaq.serialization.FSTObjectInput;
import org.nustaq.serialization.FSTObjectOutput;

import java.io.IOException;
import java.lang.reflect.Constructor;

public class FSTThrowableSerializer extends FSTBasicObjectSerializer {
    @Override
    public void writeObject(FSTObjectOutput out, Object toWrite, FSTClazzInfo clzInfo,
                            FSTClazzInfo.FSTFieldInfo referencedBy, int streamPosition) throws IOException {
        Throwable t = (Throwable)toWrite;
        out.writeStringUTF(t.getMessage() != null ? t.getMessage() : "null");
        StackTraceElement[] ste = t.getStackTrace();
        out.writeObject(ste);
        out.writeObject(t.getCause());
        out.writeObject(t.getSuppressed());
    }


    @Override
    public Object instantiate(Class objectClass, FSTObjectInput in, FSTClazzInfo serializationInfo,
                              FSTClazzInfo.FSTFieldInfo referencee, int streamPosition) throws Exception {
        Constructor constructor = objectClass.getConstructor(String.class);
        Throwable t = constructor.newInstance(in.readStringUTF()); // This causes stack trace to be filled in twice but not an easy way to solve
        StackTraceElement[] ste = (StackTraceElement[]) in.readObject();
        if (ste!=null)
            t.setStackTrace(ste);
        t.initCause((Throwable) in.readObject());
        Throwable[] suppressed = (Throwable[]) in.readObject();
        for (Throwable s : suppressed)
            t.addSuppressed(s);
        return t;
    }
}