com.dianping.cat.alarm.spi.rule.DefaultDataChecker Maven / Gradle / Ivy

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/*
 * 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.alarm.spi.rule;

import com.dianping.cat.Cat;
import com.dianping.cat.alarm.rule.entity.Condition;
import com.dianping.cat.alarm.rule.entity.SubCondition;
import org.unidal.lookup.annotation.Named;
import org.unidal.tuple.Pair;

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

@Named(type = DataChecker.class)
public class DefaultDataChecker implements DataChecker {

	private double[] buildLastMinutesDoubleArray(double[] doubleList, int remainCount) {
		if (doubleList.length <= remainCount) {
			return doubleList;
		}

		double[] result = new double[remainCount];
		int startIndex = doubleList.length - remainCount;

		for (int i = 0; i < remainCount; i++) {
			result[i] = doubleList[startIndex + i];
		}

		return result;
	}

	public List checkData(double[] value, double[] baseline, List conditions) {
		List alertResults = new ArrayList();

		for (Condition condition : conditions) {
			int conditionMinute = condition.getMinute();
			double[] valueValid = buildLastMinutesDoubleArray(value, conditionMinute);
			double[] baselineValid = buildLastMinutesDoubleArray(baseline, conditionMinute);

			Pair condResult = checkDataByCondition(valueValid, baselineValid, condition);

			if (condResult.getKey() == true) {
				String alertType = condition.getAlertType();
				alertResults.add(new DataCheckEntity(condResult.getKey(), condResult.getValue(), alertType));
			}
		}

		return alertResults;
	}

	public List checkData(double[] value, List conditions) {
		List alertResults = new ArrayList();

		for (Condition condition : conditions) {
			int conditionMinute = condition.getMinute();
			double[] valueValid = buildLastMinutesDoubleArray(value, conditionMinute);
			Pair condResult = checkDataByCondition(valueValid, valueValid, condition);

			if (condResult.getKey()) {
				String alertType = condition.getAlertType();

				alertResults.add(new DataCheckEntity(condResult.getKey(), condResult.getValue(), alertType));
			}
		}

		return alertResults;
	}

	private Pair checkDataByCondition(double[] value, double[] baseline, Condition condition) {
		StringBuilder builder = new StringBuilder();

		for (SubCondition subCondition : condition.getSubConditions()) {
			try {
				String ruleType = subCondition.getType();
				RuleType rule = RuleType.getByTypeId(ruleType);
				Pair subResult = rule.executeRule(value, baseline, subCondition.getText());

				if (!subResult.getKey()) {
					return new Pair(false, "");
				}
				builder.append(subResult.getValue()).append("
");
			} catch (Exception ex) {
				Cat.logError(condition.toString(), ex);
				return new Pair(false, "");
			}
		}

		return new Pair(true, builder.toString());
	}

	public List checkDataForApp(double[] value, List conditions) {
		List alertResults = new ArrayList();

		for (Condition condition : conditions) {
			Pair condResult = checkDataByCondition(value, null, condition);

			if (condResult.getKey()) {
				String alertType = condition.getAlertType();
				alertResults.add(new DataCheckEntity(condResult.getKey(), condResult.getValue(), alertType));
			}
		}

		return alertResults;
	}

}