org.ngrinder.agent.controller.AgentDownloadController.java Source code

Introduction

Here is the source code for org.ngrinder.agent.controller.AgentDownloadController.java

Source

/* 
 * 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 org.ngrinder.agent.controller;

import org.ngrinder.agent.service.AgentPackageService;
import org.ngrinder.common.controller.BaseController;
import org.ngrinder.common.util.FileDownloadUtils;
import org.ngrinder.region.model.RegionInfo;
import org.ngrinder.region.service.RegionService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;

import static org.ngrinder.common.util.ExceptionUtils.processException;
import static org.ngrinder.common.util.Preconditions.checkNotEmpty;
import static org.ngrinder.common.util.Preconditions.checkNotNull;

/**
 * Agent Download Controller.
 *
 * @author Tobi
 * @since 3.0
 */
@Controller
@RequestMapping("/agent")
public class AgentDownloadController extends BaseController {

    @Autowired
    private AgentPackageService agentPackageService;

    @Autowired
    private RegionService regionService;

    /**
     * Download agent.
     *
     * @param fileName file path of agent
     * @param response response.
     */
    @RequestMapping(value = "/download/{fileName:[a-zA-Z0-9\\.\\-_]+}")
    public void download(@PathVariable String fileName, HttpServletResponse response) {
        File home = getConfig().getHome().getDownloadDirectory();
        File ngrinderFile = new File(home, fileName);
        FileDownloadUtils.downloadFile(response, ngrinderFile);
    }

    /**
     * Download the latest agent.
     *
     * @param owner   agent owner
     * @param region  agent region
     * @param request request.
     */
    @RequestMapping(value = "/download/{region}/{owner}")
    public String downloadDirect(@PathVariable(value = "owner") String owner,
            @PathVariable(value = "region") String region, ModelMap modelMap, HttpServletRequest request) {
        return downloadFile(owner, region, modelMap, request);
    }

    /**
     * Download the latest agent.
     *
     * @param owner   agent owner
     * @param region  agent region
     * @param request request.
     */
    @RequestMapping(value = "/download")
    public String download(@RequestParam(value = "owner", required = false) String owner,
            @RequestParam(value = "region", required = false) String region, ModelMap modelMap,
            HttpServletRequest request) {
        return downloadFile(owner, region, modelMap, request);
    }

    private String downloadFile(String owner, String region, ModelMap modelMap, HttpServletRequest request) {
        String connectingIP = request.getServerName();
        int port = getConfig().getControllerPort();
        try {
            if (isClustered()) {
                checkNotEmpty(region, "region should be provided to download agent in cluster mode.");
                RegionInfo regionInfo = checkNotNull(regionService.getOne(region),
                        "selecting region '" + region + "'" + " is not valid");
                port = regionInfo.getControllerPort();
                connectingIP = regionInfo.getIp();
            }
            final File agentPackage = agentPackageService.createAgentPackage(region, connectingIP, port, owner);
            modelMap.clear();
            return "redirect:/agent/download/" + agentPackage.getName();
        } catch (Exception e) {
            throw processException(e);
        }
    }
}