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

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Here is the source code for edu.nwpu.gemfire.monitor.service.MemberDetailsService.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.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

import edu.nwpu.gemfire.monitor.controllers.PulseController;
import edu.nwpu.gemfire.monitor.data.Cluster;
import edu.nwpu.gemfire.monitor.data.PulseConstants;
import edu.nwpu.gemfire.monitor.data.Repository;
import edu.nwpu.gemfire.monitor.util.StringUtils;

/**
 * Class MemberDetailsService
 * 
 * This class contains implementations of getting Memeber's Statistics.
 * 
 * @author Sachin K
 * @since version 7.5
 */
@Component
@Service("MemberDetails")
@Scope("singleton")
public class MemberDetailsService 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();

        JsonNode requestDataJSON = mapper.readTree(request.getParameter("pulseData"));
        String memberName = requestDataJSON.get("MemberDetails").get("memberName").textValue();

        Cluster.Member clusterMember = cluster.getMember(StringUtils.makeCompliantName(memberName));
        if (clusterMember != null) {
            responseJSON.put("memberId", clusterMember.getId());
            responseJSON.put("name", clusterMember.getName());
            responseJSON.put("host", clusterMember.getHost());
            responseJSON.put("clusterId", cluster.getId());
            responseJSON.put("clusterName", cluster.getServerName());
            responseJSON.put("userName", userName);
            responseJSON.put("loadAverage", clusterMember.getLoadAverage());
            responseJSON.put("sockets", clusterMember.getTotalFileDescriptorOpen());
            responseJSON.put("threads", clusterMember.getNumThreads());
            responseJSON.put("offHeapFreeSize", clusterMember.getOffHeapFreeSize());
            responseJSON.put("offHeapUsedSize", clusterMember.getOffHeapUsedSize());
            responseJSON.put("regionsCount", clusterMember.getMemberRegionsList().length);

            // Number of member clients
            if (PulseController.getPulseProductSupport().equalsIgnoreCase(PulseConstants.PRODUCT_NAME_SQLFIRE)) {
                responseJSON.put("numClients", clusterMember.getNumSqlfireClients());
            } else {
                responseJSON.put("numClients", clusterMember.getMemberClientsHMap().size());
            }

            DecimalFormat df2 = new DecimalFormat(PulseConstants.DECIMAL_FORMAT_PATTERN);
            Long diskUsageVal = clusterMember.getTotalDiskUsage();
            Double diskUsage = diskUsageVal.doubleValue() / 1024;

            responseJSON.put("diskStorageUsed", Double.valueOf(df2.format(diskUsage)));

            Cluster.Alert[] alertsList = cluster.getAlertsList();

            String status = "Normal";

            for (Cluster.Alert alert : alertsList) {
                if (clusterMember.getName().equals(alert.getMemberName())) {
                    if (alert.getSeverity() == Cluster.Alert.SEVERE) {
                        status = "Severe";
                        break;
                    } else if (alert.getSeverity() == Cluster.Alert.ERROR) {
                        status = "Error";
                    } else if (alert.getSeverity() == Cluster.Alert.WARNING) {
                        status = "Warning";
                    }
                }
            }

            responseJSON.put("status", status);

        } else {
            responseJSON.put("errorOnMember", "Member [" + memberName + "] is not available");
        }

        // Send json response
        return responseJSON;
    }
}