edu.nwpu.gemfire.monitor.service.ClusterDetailsService.java Source code

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Here is the source code for edu.nwpu.gemfire.monitor.service.ClusterDetailsService.java

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/*
 *
 * 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 edu.nwpu.gemfire.monitor.service;

import java.text.DecimalFormat;

import javax.servlet.http.HttpServletRequest;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

import edu.nwpu.gemfire.monitor.data.Cluster;
import edu.nwpu.gemfire.monitor.data.PulseConstants;
import edu.nwpu.gemfire.monitor.data.Repository;

/**
 * Class ClusterDetailsService
 * 
 * This service class has implementation for providing cluster's basic
 * statistical data.
 * 
 * @author azambare
 * @since version 7.5
 */

@Component
@Service("ClusterDetails")
@Scope("singleton")
public class ClusterDetailsService implements PulseService {

    private final ObjectMapper mapper = new ObjectMapper();

    public ObjectNode execute(final HttpServletRequest request) throws Exception {

        String userName = request.getUserPrincipal().getName();

        // get cluster object
        Cluster cluster = Repository.get().getCluster();

        // json object to be sent as response
        ObjectNode responseJSON = mapper.createObjectNode();

        Cluster.Alert[] alertsList = cluster.getAlertsList();
        int severeAlertCount = 0;
        int errorAlertCount = 0;
        int warningAlertCount = 0;
        int infoAlertCount = 0;

        for (Cluster.Alert alertObj : alertsList) {
            if (alertObj.getSeverity() == Cluster.Alert.SEVERE) {
                severeAlertCount++;
            } else if (alertObj.getSeverity() == Cluster.Alert.ERROR) {
                errorAlertCount++;
            } else if (alertObj.getSeverity() == Cluster.Alert.WARNING) {
                warningAlertCount++;
            } else {
                infoAlertCount++;
            }
        }
        // getting basic details of Cluster
        responseJSON.put("clusterName", cluster.getServerName());
        responseJSON.put("severeAlertCount", severeAlertCount);
        responseJSON.put("errorAlertCount", errorAlertCount);
        responseJSON.put("warningAlertCount", warningAlertCount);
        responseJSON.put("infoAlertCount", infoAlertCount);

        responseJSON.put("totalMembers", cluster.getMemberCount());
        responseJSON.put("servers", cluster.getServerCount());
        responseJSON.put("clients", cluster.getClientConnectionCount());
        responseJSON.put("locators", cluster.getLocatorCount());
        responseJSON.put("totalRegions", cluster.getTotalRegionCount());
        Long heapSize = cluster.getTotalHeapSize();

        DecimalFormat df2 = new DecimalFormat(PulseConstants.DECIMAL_FORMAT_PATTERN);
        Double heapS = heapSize.doubleValue() / 1024;
        responseJSON.put("totalHeap", Double.valueOf(df2.format(heapS)));
        responseJSON.put("functions", cluster.getRunningFunctionCount());
        responseJSON.put("uniqueCQs", cluster.getRegisteredCQCount());
        responseJSON.put("subscriptions", cluster.getSubscriptionCount());
        responseJSON.put("txnCommitted", cluster.getTxnCommittedCount());
        responseJSON.put("txnRollback", cluster.getTxnRollbackCount());
        responseJSON.put("userName", userName);

        return responseJSON;
    }
}