InMemoryLoggingBuilder.java

//Dstl (c) Crown Copyright 2017
package uk.gov.dstl.baleen.testing.logging;

import uk.gov.dstl.baleen.core.logging.BaleenLogging;
import uk.gov.dstl.baleen.core.logging.MinMaxFilter;
import uk.gov.dstl.baleen.core.logging.builders.AbstractBaleenLoggerBuilder;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.Appender;
import ch.qos.logback.core.encoder.Encoder;

/**
 * Supporting testing through in-memory.
 *
 * 
 *
 */
public class InMemoryLoggingBuilder extends AbstractBaleenLoggerBuilder {

	private static final String NAME = "memory";
	private InMemoryAppender<ILoggingEvent> appender;

	public InMemoryLoggingBuilder(String pattern, Level minLevel, Level maxLevel) {
		super(NAME, pattern, new MinMaxFilter(minLevel, maxLevel));
	}

	public InMemoryLoggingBuilder() {
		this(BaleenLogging.DEFAULT_PATTERN, Level.INFO, Level.ERROR);
	}

	/**
	 * Access the appender as created by this builder.
	 *
	 * @return non-null (if the build method has been called)
	 */
	public InMemoryAppender<ILoggingEvent> getAppender() {
		return appender;
	}

	@Override
	protected Appender<ILoggingEvent> createAppender(LoggerContext context, Encoder<ILoggingEvent> encoder) {
		appender = new InMemoryAppender<ILoggingEvent>();

		return appender;
	}

}