com.northernwall.hadrian.handlers.host.HostFindHandler Maven / Gradle / Ivy

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/*
 * Copyright 2014 Richard Thurston.
 *
 * 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 com.northernwall.hadrian.handlers.host;

import com.google.gson.Gson;
import com.northernwall.hadrian.handlers.BasicHandler;
import com.northernwall.hadrian.details.HostDetailsHelper;
import com.northernwall.hadrian.db.DataAccess;
import com.northernwall.hadrian.db.SearchResult;
import com.northernwall.hadrian.db.SearchSpace;
import com.northernwall.hadrian.domain.Host;
import com.northernwall.hadrian.domain.Module;
import com.northernwall.hadrian.domain.Service;
import com.northernwall.hadrian.domain.Team;
import com.northernwall.hadrian.handlers.host.dao.FindHostData;
import com.northernwall.hadrian.handlers.host.dao.GetHostDetailsData;
import com.northernwall.hadrian.handlers.service.helper.InfoHelper;
import com.northernwall.hadrian.handlers.routing.Http400BadRequestException;
import com.northernwall.hadrian.handlers.routing.Http404NotFoundException;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Request;

/**
 *
 * @author Richard Thurston
 */
public class HostFindHandler extends BasicHandler {

    private final InfoHelper infoHelper;
    private final HostDetailsHelper hostDetailsHelper;

    public HostFindHandler(DataAccess dataAccess, Gson gson, InfoHelper infoHelper, HostDetailsHelper hostDetailsHelper) {
        super(dataAccess, gson);
        this.infoHelper = infoHelper;
        this.hostDetailsHelper = hostDetailsHelper;
    }

    @Override
    public void handle(String target, Request request, HttpServletRequest httpRequest, HttpServletResponse response) throws IOException, ServletException {
        String hostName = request.getParameter("hostName");
        if (hostName == null || hostName.isEmpty()) {
            throw new Http400BadRequestException("hostName is empty");
        }

        List searchResults = getDataAccess().doSearchList(
                SearchSpace.hostName,
                hostName);
        if (searchResults == null || searchResults.isEmpty()) {
            throw new Http404NotFoundException("Could not find host " + hostName);
        }

        List result = new LinkedList<>();
        GetHostDetailsData getHostDetailsData = null;
        for (SearchResult searchResult : searchResults) {
            Host host = getDataAccess().getHost(searchResult.serviceId, searchResult.hostId);
            if (host == null) {
                getDataAccess().deleteSearch(
                        SearchSpace.hostName,
                        searchResult.searchText1,
                        searchResult.searchText2);
            } else {
                Service service = getDataAccess().getService(host.getServiceId());
                if (service == null) {
                    throw new Http404NotFoundException("Could not find service for host " + hostName);
                }

                Module module = getDataAccess().getModule(host.getServiceId(), host.getModuleId());
                if (module == null) {
                    throw new Http404NotFoundException("Could not find module host " + hostName);
                }

                Team team = getDataAccess().getTeam(service.getTeamId());
                if (team == null) {
                    throw new Http404NotFoundException("Could not find team host " + hostName);
                }

                FindHostData findHostData = new FindHostData();
                findHostData.teamId = team.getTeamId();
                findHostData.teamName = team.getTeamName();
                findHostData.serviceId = service.getServiceId();
                findHostData.serviceName = service.getServiceName();
                findHostData.moduleId = module.getModuleId();
                findHostData.moduleName = module.getModuleName();
                findHostData.hostId = host.getHostId();
                findHostData.hostName = host.getHostName();
                findHostData.status = host.getStatus();
                findHostData.busy = host.isBusy();
                findHostData.dataCenter = host.getDataCenter();
                findHostData.environment = host.getEnvironment();

                findHostData.version = infoHelper.readVersion(hostName, module.getVersionUrl());
                findHostData.availability = infoHelper.readAvailability(hostName, module.getAvailabilityUrl());
                if (getHostDetailsData == null) {
                    getHostDetailsData = hostDetailsHelper.getDetails(host);
                }
                findHostData.details = getHostDetailsData;
                result.add(findHostData);
            }
        }
        if (result.isEmpty()) {
            throw new Http404NotFoundException("Could not find host " + hostName);
        }

        toJson(response, result);
        response.setStatus(200);
        request.setHandled(true);
    }

}