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A Spring Cloud Stream Binder implementation using the Solace Java API (JCSMP)

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package com.solace.spring.cloud.stream.binder.util;

import org.springframework.core.AttributeAccessor;
import org.springframework.integration.IntegrationMessageHeaderAccessor;
import org.springframework.integration.support.ErrorMessageStrategy;
import org.springframework.integration.support.ErrorMessageUtils;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.ErrorMessage;

import java.util.HashMap;
import java.util.Map;

public class SolaceMessageHeaderErrorMessageStrategy implements ErrorMessageStrategy {
    public static final String ATTR_SOLACE_RAW_MESSAGE = "solace_sourceData";
    public static final String ATTR_SOLACE_ACKNOWLEDGMENT_CALLBACK = "solace_acknowledgmentCallback";

    @Override
    public ErrorMessage buildErrorMessage(Throwable throwable, AttributeAccessor attributeAccessor) {
        Object inputMessage;
        Map headers = new HashMap<>();
        if (attributeAccessor == null) {
            inputMessage = null;
        } else {
            inputMessage = attributeAccessor.getAttribute(ErrorMessageUtils.INPUT_MESSAGE_CONTEXT_KEY);
            Object sourceData = attributeAccessor.getAttribute(ATTR_SOLACE_RAW_MESSAGE);
            if (sourceData != null) {
                headers.put(IntegrationMessageHeaderAccessor.SOURCE_DATA, sourceData);
            }
            Object ackCallback = attributeAccessor.getAttribute(ATTR_SOLACE_ACKNOWLEDGMENT_CALLBACK);
            if (ackCallback != null) {
                headers.put(IntegrationMessageHeaderAccessor.ACKNOWLEDGMENT_CALLBACK, ackCallback);
            }
        }
        return inputMessage instanceof Message ? new ErrorMessage(throwable, headers, (Message) inputMessage) :
                new ErrorMessage(throwable, headers);
    }
}