net.sf.appstatus.core.check.impl.ServicesFailureCheck.java Source code

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Here is the source code for net.sf.appstatus.core.check.impl.ServicesFailureCheck.java

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/*
 * Copyright 2010 Capgemini and Contributors
 *
 * Licensed 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 net.sf.appstatus.core.check.impl;

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

import net.sf.appstatus.core.AppStatus;
import net.sf.appstatus.core.check.AbstractCheck;
import net.sf.appstatus.core.check.IAppStatusAware;
import net.sf.appstatus.core.check.ICheckResult;
import net.sf.appstatus.core.services.IService;

import org.apache.commons.lang3.StringUtils;

/**
 * @author Nicolas Richeton
 *
 */
public class ServicesFailureCheck extends AbstractCheck implements IAppStatusAware {

    private AppStatus appStatus;
    private int limitError = 10;
    private int limitWarn = 5;

    @Override
    public ICheckResult checkStatus() {
        List<IService> services = appStatus.getServiceManager().getServices();
        List<String> warns = new ArrayList<String>();
        List<String> errors = new ArrayList<String>();

        for (IService s : services) {
            if (s.getHits() == 0) {
                continue;
            }

            long failureRatio = (s.getFailures() * 100) / s.getHits();
            if (failureRatio > limitError) {
                errors.add("Service <b>" + s.getGroup() + "#" + s.getName() + "</b> failure ratio (" + failureRatio
                        + "%) is over error limit (" + limitError + "%)");
            } else if (failureRatio > limitWarn) {
                warns.add("Service <b>" + s.getGroup() + "#" + s.getName() + "</b> failure ratio (" + failureRatio
                        + "%) is over warn limit (" + limitWarn + "%)");
            }
        }

        ICheckResult result = null;
        if (errors.size() > 0) {
            String description = StringUtils.join(errors, "<br/>");
            if (warns.size() > 0) {
                description = description + " <br/>Additional warnings: " + StringUtils.join(warns, "<br/>");
            }
            result = result(this).code(ICheckResult.ERROR).fatal().description(description).build();
        } else if (warns.size() > 0) {
            result = result(this).code(ICheckResult.ERROR).description(StringUtils.join(warns, "<br/>")).build();
        } else {
            result = result(this).code(ICheckResult.OK).description("All failure ratios under " + limitWarn + "%")
                    .build();
        }
        return result;
    }

    public String getGroup() {
        return "Services";
    }

    public String getName() {
        return "Failures";
    }

    public void setAppStatus(AppStatus appStatus) {
        this.appStatus = appStatus;

    }

    @Override
    public void setConfiguration(Properties configuration) {
        super.setConfiguration(configuration);

        String error = getConfiguration().getProperty("serviceFailureCheck.limitError");
        if (error != null) {
            limitError = Integer.valueOf(error);
        }

        String warn = getConfiguration().getProperty("serviceFailureCheck.limitWarn");
        if (warn != null) {
            limitWarn = Integer.valueOf(warn);
        }
    }
}