package org.apache.logging.log4j.core.config.plugins.visitors;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.Node;
import org.apache.logging.log4j.core.config.plugins.PluginValue;
import org.apache.logging.log4j.util.StringBuilders;
import org.apache.logging.log4j.util.Strings;
public class PluginValueVisitor extends AbstractPluginVisitor<PluginValue> {
public PluginValueVisitor() {
super(PluginValue.class);
}
@Override
public Object visit(final Configuration configuration, final Node node, final LogEvent event,
final StringBuilder log) {
final String name = this.annotation.value();
final String elementValue = node.getValue();
final String attributeValue = node.getAttributes().get(name);
String rawValue = null;
if (Strings.isNotEmpty(elementValue)) {
if (Strings.isNotEmpty(attributeValue)) {
LOGGER.error("Configuration contains {} with both attribute value ({}) AND element" +
" value ({}). Please specify only one value. Using the element value.",
node.getName(), attributeValue, elementValue);
}
rawValue = elementValue;
} else {
rawValue = removeAttributeValue(node.getAttributes(), name);
}
final String value = this.substitutor.replace(event, rawValue);
StringBuilders.appendKeyDqValue(log, name, value);
return value;
}
}