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 com.iyonger.apm.web.configuration; import com.iyonger.apm.web.configuration.constant.ClusterConstants; import com.iyonger.apm.web.configuration.constant.ControllerConstants; import com.iyonger.apm.web.logger.CoreLogger; import com.iyonger.apm.web.model.Home; import com.iyonger.apm.web.spring.SpringContext; import com.iyonger.apm.web.util.FileWatchdog; import com.iyonger.apm.web.configuration.constant.DatabaseConstants; import net.grinder.util.ListenerSupport; import net.grinder.util.ListenerSupport.Informer; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.StringUtils; import org.ngrinder.common.constants.InternalConstants; import org.ngrinder.common.exception.ConfigurationException; import org.ngrinder.common.util.PropertiesKeyMapper; import org.ngrinder.common.util.PropertiesWrapper; import org.ngrinder.service.AbstractConfig; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.ClassPathResource; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import java.beans.PropertyChangeListener; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.Properties; import static net.grinder.util.NoOp.noOp; import static org.ngrinder.common.util.Preconditions.checkNotNull; /** * Spring component which is responsible to get the nGrinder configurations which is stored ${NGRINDER_HOME}. * * @author JunHo Yoon * @since 3.0 */ @Component public class Config extends AbstractConfig implements ControllerConstants, ClusterConstants { private static final String NGRINDER_DEFAULT_FOLDER = ".ngrinder"; private static final String NGRINDER_EX_FOLDER = ".ngrinder_ex"; private static final Logger LOG = LoggerFactory.getLogger(Config.class); private Home home = null; private Home exHome = null; private PropertiesWrapper internalProperties; private PropertiesWrapper controllerProperties; private PropertiesWrapper databaseProperties; private PropertiesWrapper clusterProperties; private String announcement = ""; private Date announcementDate; private boolean verbose; public static final String NONE_REGION = "NONE"; private boolean cluster; private ListenerSupport<PropertyChangeListener> systemConfListeners = new ListenerSupport<PropertyChangeListener>(); protected PropertiesKeyMapper internalPropertiesKeyMapper = PropertiesKeyMapper .create("internal-properties.map"); protected PropertiesKeyMapper controllerPropertiesKeyMapper = PropertiesKeyMapper .create("controller-properties.map"); protected PropertiesKeyMapper clusterPropertiesKeyMapper = PropertiesKeyMapper.create("cluster-properties.map"); @SuppressWarnings("SpringJavaAutowiringInspection") @Autowired private SpringContext context; /** * Make it singleton. */ Config() { } /** * Add the system configuration change listener. * * @param listener listener */ @SuppressWarnings("UnusedDeclaration") public void addSystemConfListener(PropertyChangeListener listener) { systemConfListeners.add(listener); } /** * Initialize the {@link Config} object. * <p/> * This method mainly resolves ${NGRINDER_HOME} and loads system properties. In addition, the logger is initialized * and the default configuration files are copied into ${NGRINDER_HOME} if they do not exists. */ @PostConstruct public void init() { try { CoreLogger.LOGGER.info("nGrinder is starting..."); home = resolveHome(); home.init(); exHome = resolveExHome(); copyDefaultConfigurationFiles(); loadInternalProperties(); loadProperties(); initHomeMonitor(); // Load cluster in advance. cluster mode is not dynamically // reloadable. //cluster = resolveClusterMode(); initDevModeProperties(); loadAnnouncement(); //loadDatabaseProperties(); } catch (IOException e) { throw new ConfigurationException("Error while init nGrinder", e); } } protected void initDevModeProperties() { if (!isDevMode()) { //initLogger(false); } else { final PropertiesWrapper controllerProperties = getControllerProperties(); controllerProperties.addProperty(PROP_CONTROLLER_AGENT_FORCE_UPDATE, "true"); controllerProperties.addProperty(PROP_CONTROLLER_ENABLE_AGENT_AUTO_APPROVAL, "true"); controllerProperties.addProperty(PROP_CONTROLLER_ENABLE_SCRIPT_CONSOLE, "true"); } } private boolean resolveClusterMode() { String mode = getClusterProperties().getProperty(PROP_CLUSTER_MODE, "none"); return !"none".equals(mode) || getClusterProperties().getPropertyBoolean(PROP_CLUSTER_ENABLED); } /** * Destroy bean. */ @PreDestroy public void destroy() { // Stop all the non-daemon thread. announcementWatchDog.interrupt(); systemConfWatchDog.interrupt(); policyJsWatchDog.interrupt(); } /** * Get if the cluster mode is enable or not. * * @return true if the cluster mode is enabled. * @since 3.1 */ public boolean isClustered() { return cluster; } public int getControllerPort() { return getControllerProperties().getPropertyInt(ControllerConstants.PROP_CONTROLLER_CONTROLLER_PORT); } /** * Get the ngrinder instance IPs consisting of the current cluster from the configuration. * * @return ngrinder instance IPs */ public String[] getClusterURIs() { String clusterUri = getClusterProperties().getProperty(PROP_CLUSTER_MEMBERS); return StringUtils.split(StringUtils.trimToEmpty(clusterUri), ",;"); } /** * Get the current region from the configuration. * * @return region. If it's not clustered mode, return "NONE" */ public String getRegion() { return isClustered() ? getClusterProperties().getProperty(PROP_CLUSTER_REGION) : NONE_REGION; } /** * Get the monitor listener port from the configuration. * * @return monitor port */ public int getMonitorPort() { return getControllerProperties().getPropertyInt(PROP_CONTROLLER_MONITOR_PORT); } /** * Check if the periodic usage report is enabled. * * @return true if enabled. */ public boolean isUsageReportEnabled() { return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_USAGE_REPORT); } /** * Check if user self-registration is enabled. * * @return true if enabled. */ public boolean isSignUpEnabled() { return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_ALLOW_SIGN_UP); } /** * Copy the default files and create default directories to ${NGRINDER_HOME}. * * @throws IOException occurs when there is no such a files. */ protected void copyDefaultConfigurationFiles() throws IOException { checkNotNull(home); //home.copyFrom(new ClassPathResource("ngrinder_home_template").getFile()); } /** * Resolve nGrinder home path. * * @return resolved home */ protected Home resolveHome() { if (StringUtils.isNotBlank(System.getProperty("unit-test"))) { final String tempDir = System.getProperty("java.io.tmpdir"); final File tmpHome = new File(tempDir, ".ngrinder"); if (tmpHome.mkdirs()) { LOG.info("{} is created", tmpHome.getPath()); } try { FileUtils.forceDeleteOnExit(tmpHome); } catch (IOException e) { LOG.error("Error while setting forceDeleteOnExit on {}", tmpHome); } return new Home(tmpHome); } String userHomeFromEnv = System.getenv("NGRINDER_HOME"); String userHomeFromProperty = System.getProperty("ngrinder.home"); if (!StringUtils.equals(userHomeFromEnv, userHomeFromProperty)) { CoreLogger.LOGGER.warn("The path to ngrinder-home is ambiguous:"); CoreLogger.LOGGER.warn(" System Environment: NGRINDER_HOME=" + userHomeFromEnv); CoreLogger.LOGGER.warn(" Java System Property: ngrinder.home=" + userHomeFromProperty); CoreLogger.LOGGER.warn(" '" + userHomeFromProperty + "' is accepted."); } String userHome = StringUtils.defaultIfEmpty(userHomeFromProperty, userHomeFromEnv); if (StringUtils.isEmpty(userHome)) { userHome = System.getProperty("user.home") + File.separator + NGRINDER_DEFAULT_FOLDER; } else if (StringUtils.startsWith(userHome, "~" + File.separator)) { userHome = System.getProperty("user.home") + File.separator + userHome.substring(2); } else if (StringUtils.startsWith(userHome, "." + File.separator)) { userHome = System.getProperty("user.dir") + File.separator + userHome.substring(2); } userHome = FilenameUtils.normalize(userHome); File homeDirectory = new File(userHome); CoreLogger.LOGGER.info("nGrinder home directory:{}.", homeDirectory.getPath()); return new Home(homeDirectory); } /** * Resolve nGrinder extended home path. * * @return resolved home */ protected Home resolveExHome() { String exHomeFromEnv = System.getenv("NGRINDER_EX_HOME"); String exHomeFromProperty = System.getProperty("ngrinder.ex_home"); if (!StringUtils.equals(exHomeFromEnv, exHomeFromProperty)) { CoreLogger.LOGGER.warn("The path to ngrinder ex home is ambiguous:"); CoreLogger.LOGGER.warn(" System Environment: NGRINDER_EX_HOME=" + exHomeFromEnv); CoreLogger.LOGGER.warn(" Java System Property: ngrinder.ex_home=" + exHomeFromProperty); CoreLogger.LOGGER.warn(" '" + exHomeFromProperty + "' is accepted."); } String userHome = StringUtils.defaultIfEmpty(exHomeFromProperty, exHomeFromEnv); if (StringUtils.isEmpty(userHome)) { userHome = System.getProperty("user.home") + File.separator + NGRINDER_EX_FOLDER; } else if (StringUtils.startsWith(userHome, "~" + File.separator)) { userHome = System.getProperty("user.home") + File.separator + userHome.substring(2); } else if (StringUtils.startsWith(userHome, "." + File.separator)) { userHome = System.getProperty("user.dir") + File.separator + userHome.substring(2); } userHome = FilenameUtils.normalize(userHome); File exHomeDirectory = new File(userHome); CoreLogger.LOGGER.info("nGrinder ex home directory:{}.", exHomeDirectory); try { //noinspection ResultOfMethodCallIgnored exHomeDirectory.mkdirs(); } catch (Exception e) { // If it's not possible.. do it... without real directory. noOp(); } return new Home(exHomeDirectory, false); } /** * Load internal properties which is not modifiable by user. */ protected void loadInternalProperties() { InputStream inputStream = null; Properties properties = new Properties(); try { inputStream = new ClassPathResource("/internal.properties").getInputStream(); properties.load(inputStream); internalProperties = new PropertiesWrapper(properties, internalPropertiesKeyMapper); } catch (IOException e) { CoreLogger.LOGGER.error("Error while load internal.properties", e); internalProperties = new PropertiesWrapper(properties, internalPropertiesKeyMapper); } finally { IOUtils.closeQuietly(inputStream); } } /** * Load database related properties. (database.conf) */ protected void loadDatabaseProperties() { checkNotNull(home); Properties properties = home.getProperties("database.conf"); properties.put("NGRINDER_HOME", home.getDirectory().getAbsolutePath()); properties.putAll(System.getProperties()); } /** * Load system related properties. (system.conf) */ public synchronized void loadProperties() { Properties properties = checkNotNull(home).getProperties("system.conf"); properties.put("NGRINDER_HOME", home.getDirectory().getAbsolutePath()); if (exHome.exists()) { Properties exProperties = exHome.getProperties("system-ex.conf"); if (exProperties.isEmpty()) { exProperties = exHome.getProperties("system.conf"); } properties.putAll(exProperties); } properties.putAll(System.getProperties()); // Override if exists controllerProperties = new PropertiesWrapper(properties, controllerPropertiesKeyMapper); //clusterProperties = new PropertiesWrapper(properties, clusterPropertiesKeyMapper); } /** * Load the announcement content. */ @SuppressWarnings("SynchronizeOnNonFinalField") public void loadAnnouncement() { checkNotNull(home); synchronized (announcement) { File sysFile = home.getSubFile("announcement.conf"); try { announcement = FileUtils.readFileToString(sysFile, "UTF-8"); if (sysFile.exists()) { announcementDate = new Date(sysFile.lastModified()); } else { announcementDate = null; } } catch (IOException e) { CoreLogger.LOGGER.error("Error while reading announcement file.", e); announcement = ""; } } } /** * watch docs. */ private FileWatchdog announcementWatchDog; private FileWatchdog systemConfWatchDog; private FileWatchdog policyJsWatchDog; protected void initHomeMonitor() { checkNotNull(home); this.announcementWatchDog = new FileWatchdog(getHome().getSubFile("announcement.conf").getAbsolutePath()) { @Override protected void doOnChange() { CoreLogger.LOGGER.info("Announcement file is changed."); loadAnnouncement(); } }; announcementWatchDog.setName("WatchDog - announcement.conf"); announcementWatchDog.setDelay(2000); announcementWatchDog.start(); this.systemConfWatchDog = new FileWatchdog(getHome().getSubFile("system.conf").getAbsolutePath()) { @Override protected void doOnChange() { try { CoreLogger.LOGGER.info("System configuration(system.conf) is changed."); loadProperties(); systemConfListeners.apply(new Informer<PropertyChangeListener>() { @Override public void inform(PropertyChangeListener listener) { listener.propertyChange(null); } }); CoreLogger.LOGGER.info("New system configuration is applied."); } catch (Exception e) { CoreLogger.LOGGER.error("Error occurs while applying new system configuration", e); } } }; systemConfWatchDog.setName("WatchDoc - system.conf"); systemConfWatchDog.setDelay(2000); systemConfWatchDog.start(); String processThreadPolicyPath = getHome().getSubFile("process_and_thread_policy.js").getAbsolutePath(); this.policyJsWatchDog = new FileWatchdog(processThreadPolicyPath) { @Override protected void doOnChange() { CoreLogger.LOGGER.info("process_and_thread_policy file is changed."); policyScript = ""; } }; policyJsWatchDog.setName("WatchDoc - process_and_thread_policy.js"); policyJsWatchDog.setDelay(2000); policyJsWatchDog.start(); } /** * Get the database properties. * * @return database properties */ public PropertiesWrapper getDatabaseProperties() { checkNotNull(databaseProperties); if (context.isUnitTestContext() && !databaseProperties.exist(DatabaseConstants.PROP_DATABASE_UNIT_TEST)) { databaseProperties.addProperty(DatabaseConstants.PROP_DATABASE_UNIT_TEST, "true"); } return databaseProperties; } /** * Check if it's test mode. * * @return true if test mode */ public boolean isDevMode() { return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_DEV_MODE); } /** * Check if the user security is enabled. * * @return true if user security is enabled. */ public boolean isUserSecurityEnabled() { return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_USER_SECURITY); } /** * Check if it's the security enabled mode. * * @return true if security is enabled. */ public boolean isSecurityEnabled() { return !isDevMode() && getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_SECURITY); } /** * Check if it is the demo mode. * * @return true if demo mode is enabled. */ public boolean isDemo() { return getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_DEMO_MODE); } /** * Check if the plugin support is enabled. * <p/> * The reason why we need this configuration is that it takes time to initialize plugin system in unit test context. * * @return true if the plugin is supported. */ public boolean isPluginSupported() { return (getControllerProperties().getPropertyBoolean(PROP_CONTROLLER_PLUGIN_SUPPORT)); } /** * Get the resolved home folder. * * @return home */ public Home getHome() { return this.home; } /** * Get the resolved extended home folder. * * @return home * @since 3.1 */ public Home getExHome() { return this.exHome; } /** * Get the system properties. * * @return {@link PropertiesWrapper} which is loaded from system.conf. */ public PropertiesWrapper getControllerProperties() { return checkNotNull(controllerProperties); } /** * Get the announcement content. * * @return loaded from announcement.conf. */ public String getAnnouncement() { return announcement; } /** * Get the nGrinder version number. * * @return version number */ public String getVersion() { return getInternalProperties().getProperty(InternalConstants.PROP_INTERNAL_APM_VERSION); } /** * Policy file which is used to determine the count of processes and threads. */ private String policyScript = ""; /** * Get the content of "process_and_thread_policy.js" file. * * @return loaded file content. */ public String getProcessAndThreadPolicyScript() { if (StringUtils.isEmpty(policyScript)) { try { policyScript = FileUtils.readFileToString(getHome().getSubFile("process_and_thread_policy.js")); return policyScript; } catch (IOException e) { LOG.error("Error while load process_and_thread_policy.js", e); } } return policyScript; } /** * Get the internal properties. * * @return internal properties */ public PropertiesWrapper getInternalProperties() { return internalProperties; } /** * Check if it's verbose logging mode. * * @return true if verbose */ public boolean isVerbose() { return verbose; } /** * Get the currently configured controller IP. * * @return current IP. */ public String getCurrentIP() { if (cluster) { return StringUtils.trimToEmpty(getClusterProperties().getProperty(PROP_CLUSTER_HOST)); } else { return StringUtils.trimToEmpty(getControllerProperties().getProperty(PROP_CONTROLLER_IP)); } } /** * Check if the current ngrinder instance is hidden instance from the cluster. * * @return true if hidden. */ public boolean isInvisibleRegion() { return getClusterProperties().getPropertyBoolean(PROP_CLUSTER_HIDDEN_REGION); } /** * Check if no_more_test.lock to block further test executions exists. * * @return true if it exists */ public boolean hasNoMoreTestLock() { return exHome.exists() && exHome.getSubFile("no_more_test.lock").exists(); } /** * Check if shutdown.lock exists. * * @return true if it exists */ public boolean hasShutdownLock() { return exHome.exists() && exHome.getSubFile("shutdown.lock").exists(); } /** * Get the date of the recent announcement modification. * * @return the date of the recent announcement modification. */ public Date getAnnouncementDate() { return announcementDate; } /** * Get ngrinder help URL. * * @return help URL */ public String getHelpUrl() { return getControllerProperties().getProperty(PROP_CONTROLLER_HELP_URL); } public PropertiesWrapper getClusterProperties() { return clusterProperties; } /** * Get the time out milliseconds which would be used between the console and the agent while preparing to test. * * @return */ public long getInactiveClientTimeOut() { return getControllerProperties().getPropertyLong(PROP_CONTROLLER_INACTIVE_CLIENT_TIME_OUT); } }