/*
 * Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 com.dianping.cat.report.page.top;

import java.util.ArrayList;
import java.util.List;

import com.dianping.cat.consumer.top.model.entity.Domain;
import com.dianping.cat.consumer.top.model.entity.Error;
import com.dianping.cat.consumer.top.model.entity.Segment;
import com.dianping.cat.consumer.top.model.transform.BaseVisitor;
import com.dianping.cat.report.alert.exception.ExceptionRuleConfigManager;

public class TopExceptionExclude extends BaseVisitor {

	private ExceptionRuleConfigManager m_configManager;

	private String m_domain;

	private Segment m_segment;

	private List<String> m_exceptions = new ArrayList<String>();

	public TopExceptionExclude(ExceptionRuleConfigManager configManager) {
		m_configManager = configManager;
	}

	@Override
	public void visitDomain(Domain domain) {
		m_domain = domain.getName();

		super.visitDomain(domain);
	}

	@Override
	public void visitError(Error error) {
		String exception = error.getId();
		boolean isExcluded = m_configManager.isExcluded(m_domain, exception);

		if (isExcluded) {
			m_segment.setError(m_segment.getError() - error.getCount());
			m_exceptions.add(exception);
		} else {
			super.visitError(error);
		}
	}

	@Override
	public void visitSegment(Segment segment) {
		m_segment = segment;
		m_exceptions.clear();

		super.visitSegment(segment);

		for (String exception : m_exceptions) {
			segment.removeError(exception);
		}
	}

}
