Java tutorial
/* * 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.operation.cotroller; import org.apache.commons.lang.ObjectUtils; import org.apache.commons.lang.StringUtils; import org.ngrinder.agent.service.AgentManagerService; import org.ngrinder.common.controller.BaseController; import org.ngrinder.infra.plugin.PluginManager; import org.ngrinder.perftest.service.AgentManager; import org.ngrinder.perftest.service.ConsoleManager; import org.ngrinder.perftest.service.PerfTestService; import org.ngrinder.perftest.service.TagService; import org.ngrinder.region.service.RegionService; import org.ngrinder.script.service.FileEntryService; import org.ngrinder.user.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cache.CacheManager; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.annotation.Profile; import org.springframework.security.access.prepost.PreAuthorize; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; import java.io.PrintWriter; import java.io.StringWriter; /** * Script Runner for maintenance. * * This class has the jython instance and put the most important class instances as variables in the jython. Admin and * super user can run any jython code to print out or modify the internal ngrinder states. * * @author JunHo Yoon * @since 3.0 */ @SuppressWarnings("SpringJavaAutowiringInspection") @Profile("production") @Controller @RequestMapping("/operation/script_console") @PreAuthorize("hasAnyRole('A')") public class ScriptConsoleController extends BaseController implements ApplicationContextAware { private ApplicationContext applicationContext; @Autowired private AgentManager agentManager; @Autowired private AgentManagerService agentManagerService; @Autowired private ConsoleManager consoleManager; @Autowired private PerfTestService perfTestService; @Autowired private FileEntryService fileEntryService; @Autowired private UserService userService; @Autowired private RegionService regionService; @Autowired private PluginManager pluginManager; @Autowired private TagService tagService; @Autowired private CacheManager cacheManager; /** * Run the given script. The run result is stored in "result" of the given model. * * @param script script * @param model model * @return operation/script_console */ @RequestMapping("") public String run(@RequestParam(value = "script", defaultValue = "") String script, Model model) { if (StringUtils.isNotBlank(script)) { ScriptEngine engine = new ScriptEngineManager().getEngineByName("Groovy"); engine.put("applicationContext", this.applicationContext); engine.put("agentManager", this.agentManager); engine.put("agentManagerService", this.agentManagerService); engine.put("regionService", this.regionService); engine.put("consoleManager", this.consoleManager); engine.put("userService", this.userService); engine.put("perfTestService", this.perfTestService); engine.put("tagService", this.tagService); engine.put("fileEntryService", this.fileEntryService); engine.put("config", getConfig()); engine.put("pluginManager", this.pluginManager); engine.put("cacheManager", this.cacheManager); engine.put("user", getCurrentUser()); final StringWriter out = new StringWriter(); PrintWriter writer = new PrintWriter(out); engine.getContext().setWriter(writer); engine.getContext().setErrorWriter(writer); try { Object result = engine.eval(script); result = out.toString() + "\n" + ObjectUtils.defaultIfNull(result, ""); model.addAttribute("result", result); } catch (ScriptException e) { model.addAttribute("result", out.toString() + "\n" + e.getMessage()); } } model.addAttribute("script", script); return "operation/script_console"; } @Override public void setApplicationContext(ApplicationContext applicationContext) { this.applicationContext = applicationContext; } }