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package org.mule.module.launcher.application; |
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import static org.mule.util.SplashScreen.miniSplash; |
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import org.mule.MuleServer; |
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import org.mule.api.MuleContext; |
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import org.mule.api.MuleException; |
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import org.mule.api.config.ConfigurationBuilder; |
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import org.mule.api.config.MuleProperties; |
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import org.mule.api.context.notification.MuleContextNotificationListener; |
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import org.mule.config.builders.AutoConfigurationBuilder; |
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import org.mule.config.builders.SimpleConfigurationBuilder; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.context.DefaultMuleContextFactory; |
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import org.mule.context.notification.MuleContextNotification; |
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import org.mule.context.notification.NotificationException; |
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import org.mule.module.launcher.AbstractFileWatcher; |
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import org.mule.module.launcher.AppBloodhound; |
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import org.mule.module.launcher.ApplicationMuleContextBuilder; |
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import org.mule.module.launcher.ConfigChangeMonitorThreadFactory; |
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import org.mule.module.launcher.DefaultAppBloodhound; |
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import org.mule.module.launcher.DefaultMuleSharedDomainClassLoader; |
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import org.mule.module.launcher.DeploymentInitException; |
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import org.mule.module.launcher.DeploymentService; |
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import org.mule.module.launcher.DeploymentStartException; |
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import org.mule.module.launcher.DeploymentStopException; |
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import org.mule.module.launcher.GoodCitizenClassLoader; |
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import org.mule.module.launcher.InstallException; |
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import org.mule.module.launcher.MuleApplicationClassLoader; |
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import org.mule.module.launcher.MuleSharedDomainClassLoader; |
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import org.mule.module.launcher.descriptor.ApplicationDescriptor; |
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import org.mule.module.reboot.MuleContainerBootstrapUtils; |
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import org.mule.util.ClassUtils; |
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import org.mule.util.ExceptionUtils; |
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import org.mule.util.FileUtils; |
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import org.mule.util.StringUtils; |
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|
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import java.io.File; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ScheduledExecutorService; |
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import java.util.concurrent.TimeUnit; |
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|
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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|
56 | 0 | public class DefaultMuleApplication implements Application |
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{ |
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|
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protected static final int DEFAULT_RELOAD_CHECK_INTERVAL_MS = 3000; |
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protected static final String ANCHOR_FILE_BLURB = "Delete this file while Mule is running to undeploy this app in a clean way."; |
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|
62 | 0 | protected transient final Log logger = LogFactory.getLog(getClass()); |
63 | 0 | protected transient final Log deployLogger = LogFactory.getLog(DeploymentService.class); |
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|
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protected ScheduledExecutorService watchTimer; |
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|
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private String appName; |
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private MuleContext muleContext; |
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private ClassLoader deploymentClassLoader; |
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private ApplicationDescriptor descriptor; |
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|
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protected String[] absoluteResourcePaths; |
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|
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protected DefaultMuleApplication(String appName) |
75 | 0 | { |
76 | 0 | this.appName = appName; |
77 | 0 | } |
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|
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public void install() |
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{ |
81 | 0 | if (logger.isInfoEnabled()) |
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{ |
83 | 0 | logger.info(miniSplash(String.format("New app '%s'", appName))); |
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} |
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|
86 | 0 | AppBloodhound bh = new DefaultAppBloodhound(); |
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try |
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{ |
89 | 0 | descriptor = bh.fetch(getAppName()); |
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} |
91 | 0 | catch (IOException e) |
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{ |
93 | 0 | throw new InstallException(MessageFactory.createStaticMessage("Failed to parse the application deployment descriptor"), e); |
94 | 0 | } |
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|
96 | 0 | createAnchorFile(getAppName()); |
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|
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|
99 | 0 | final String[] configResources = descriptor.getConfigResources(); |
100 | 0 | absoluteResourcePaths = new String[configResources.length]; |
101 | 0 | for (int i = 0; i < configResources.length; i++) |
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{ |
103 | 0 | String resource = configResources[i]; |
104 | 0 | final File file = toAbsoluteFile(resource); |
105 | 0 | if (!file.exists()) |
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{ |
107 | 0 | throw new InstallException( |
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MessageFactory.createStaticMessage(String.format("Config for app '%s' not found: %s", getAppName(), file)) |
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); |
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} |
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|
112 | 0 | absoluteResourcePaths[i] = file.getAbsolutePath(); |
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} |
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|
115 | 0 | createDeploymentClassLoader(); |
116 | 0 | } |
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|
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public String getAppName() |
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{ |
120 | 0 | return appName; |
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} |
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|
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public ApplicationDescriptor getDescriptor() |
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{ |
125 | 0 | return descriptor; |
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} |
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|
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public void setAppName(String appName) |
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{ |
130 | 0 | this.appName = appName; |
131 | 0 | } |
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|
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public void start() |
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{ |
135 | 0 | if (logger.isInfoEnabled()) |
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{ |
137 | 0 | logger.info(miniSplash(String.format("Starting app '%s'", appName))); |
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} |
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|
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try |
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{ |
142 | 0 | this.muleContext.start(); |
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|
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|
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|
146 | 0 | final ClassLoader oldCl = Thread.currentThread().getContextClassLoader(); |
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try |
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{ |
149 | 0 | Thread.currentThread().setContextClassLoader(null); |
150 | 0 | deployLogger.info(miniSplash(String.format("Started app '%s'", appName))); |
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} |
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finally |
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{ |
154 | 0 | Thread.currentThread().setContextClassLoader(oldCl); |
155 | 0 | } |
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} |
157 | 0 | catch (MuleException e) |
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{ |
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|
160 | 0 | logger.error(null, ExceptionUtils.getRootCause(e)); |
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|
162 | 0 | throw new DeploymentStartException(CoreMessages.createStaticMessage(ExceptionUtils.getRootCauseMessage(e)), e); |
163 | 0 | } |
164 | 0 | } |
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|
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public void init() |
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{ |
168 | 0 | if (logger.isInfoEnabled()) |
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{ |
170 | 0 | logger.info(miniSplash(String.format("Initializing app '%s'", appName))); |
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} |
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|
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try |
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{ |
175 | 0 | ConfigurationBuilder cfgBuilder = createConfigurationBuiler(); |
176 | 0 | if (!cfgBuilder.isConfigured()) |
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{ |
178 | 0 | List<ConfigurationBuilder> builders = new ArrayList<ConfigurationBuilder>(3); |
179 | 0 | builders.add(createConfigurationBuilderFromApplicationProperties()); |
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|
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|
182 | 0 | addAnnotationsConfigBuilderIfPresent(builders); |
183 | 0 | addIBeansConfigurationBuilderIfPackagesConfiguredForScanning(builders); |
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|
185 | 0 | builders.add(cfgBuilder); |
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|
187 | 0 | DefaultMuleContextFactory muleContextFactory = new DefaultMuleContextFactory(); |
188 | 0 | this.muleContext = muleContextFactory.createMuleContext(builders, new ApplicationMuleContextBuilder(descriptor)); |
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|
190 | 0 | if (descriptor.isRedeploymentEnabled()) |
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{ |
192 | 0 | createRedeployMonitor(); |
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} |
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} |
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} |
196 | 0 | catch (Exception e) |
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{ |
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|
199 | 0 | logger.error(null, ExceptionUtils.getRootCause(e)); |
200 | 0 | throw new DeploymentInitException(CoreMessages.createStaticMessage(ExceptionUtils.getRootCauseMessage(e)), e); |
201 | 0 | } |
202 | 0 | } |
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|
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protected ConfigurationBuilder createConfigurationBuiler() throws Exception |
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{ |
206 | 0 | String configBuilderClassName = determineConfigBuilderClassName(); |
207 | 0 | return (ConfigurationBuilder) ClassUtils.instanciateClass(configBuilderClassName, |
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new Object[] { absoluteResourcePaths }, getDeploymentClassLoader()); |
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} |
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protected String determineConfigBuilderClassName() |
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{ |
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|
214 | 0 | final String builderFromDesc = descriptor.getConfigurationBuilder(); |
215 | 0 | if ("spring".equalsIgnoreCase(builderFromDesc)) |
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{ |
217 | 0 | return ApplicationDescriptor.CLASSNAME_SPRING_CONFIG_BUILDER; |
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} |
219 | 0 | else if (builderFromDesc == null) |
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{ |
221 | 0 | return AutoConfigurationBuilder.class.getName(); |
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} |
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else |
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{ |
225 | 0 | return builderFromDesc; |
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} |
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} |
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|
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protected ConfigurationBuilder createConfigurationBuilderFromApplicationProperties() |
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{ |
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|
232 | 0 | final Map<String,String> appProperties = descriptor.getAppProperties(); |
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|
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|
235 | 0 | File appPath = new File(MuleContainerBootstrapUtils.getMuleAppsDir(), getAppName()); |
236 | 0 | appProperties.put(MuleProperties.APP_HOME_DIRECTORY_PROPERTY, appPath.getAbsolutePath()); |
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|
238 | 0 | appProperties.put(MuleProperties.APP_NAME_PROPERTY, getAppName()); |
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|
240 | 0 | return new SimpleConfigurationBuilder(appProperties); |
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} |
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|
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protected void addAnnotationsConfigBuilderIfPresent(List<ConfigurationBuilder> builders) throws Exception |
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{ |
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|
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|
247 | 0 | if (ClassUtils.isClassOnPath(MuleServer.CLASSNAME_ANNOTATIONS_CONFIG_BUILDER, getClass())) |
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{ |
249 | 0 | Object configBuilder = ClassUtils.instanciateClass( |
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MuleServer.CLASSNAME_ANNOTATIONS_CONFIG_BUILDER, ClassUtils.NO_ARGS, getClass()); |
251 | 0 | builders.add((ConfigurationBuilder) configBuilder); |
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} |
253 | 0 | } |
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|
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protected void addIBeansConfigurationBuilderIfPackagesConfiguredForScanning(List<ConfigurationBuilder> builders) |
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throws Exception |
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{ |
258 | 0 | String packagesToScan = descriptor.getPackagesToScan(); |
259 | 0 | if (StringUtils.isNotEmpty(packagesToScan)) |
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{ |
261 | 0 | String[] paths = packagesToScan.split(","); |
262 | 0 | Object configBuilder = ClassUtils.instanciateClass( |
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MuleServer.CLASSNAME_IBEANS_CONFIG_BUILDER, new Object[] { paths }, getClass()); |
264 | 0 | builders.add((ConfigurationBuilder) configBuilder); |
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} |
266 | 0 | } |
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|
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public MuleContext getMuleContext() |
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{ |
270 | 0 | return muleContext; |
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} |
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|
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public ClassLoader getDeploymentClassLoader() |
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{ |
275 | 0 | return this.deploymentClassLoader; |
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} |
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|
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public void dispose() |
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{ |
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|
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|
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try |
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{ |
284 | 0 | ClassLoader appCl = getDeploymentClassLoader(); |
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|
286 | 0 | if (appCl != null) |
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{ |
288 | 0 | Thread.currentThread().setContextClassLoader(appCl); |
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} |
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|
291 | 0 | doDispose(); |
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|
293 | 0 | if (appCl != null) |
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{ |
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|
296 | 0 | if (appCl instanceof GoodCitizenClassLoader) |
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{ |
298 | 0 | GoodCitizenClassLoader classLoader = (GoodCitizenClassLoader) appCl; |
299 | 0 | classLoader.close(); |
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} |
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} |
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} |
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finally |
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{ |
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|
306 | 0 | Thread.currentThread().setContextClassLoader(null); |
307 | 0 | } |
308 | 0 | } |
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|
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public void redeploy() |
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{ |
312 | 0 | if (logger.isInfoEnabled()) |
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{ |
314 | 0 | logger.info(miniSplash(String.format("Redeploying app '%s'", appName))); |
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} |
316 | 0 | dispose(); |
317 | 0 | install(); |
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|
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|
320 | 0 | final ClassLoader cl = getDeploymentClassLoader(); |
321 | 0 | Thread.currentThread().setContextClassLoader(cl); |
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|
323 | 0 | init(); |
324 | 0 | start(); |
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|
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|
327 | 0 | Thread.currentThread().setContextClassLoader(null); |
328 | 0 | } |
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|
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public void stop() |
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{ |
332 | 0 | if (this.muleContext == null) |
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{ |
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|
335 | 0 | return; |
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} |
337 | 0 | if (logger.isInfoEnabled()) |
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{ |
339 | 0 | logger.info(miniSplash(String.format("Stopping app '%s'", appName))); |
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} |
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try |
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{ |
343 | 0 | this.muleContext.stop(); |
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} |
345 | 0 | catch (MuleException e) |
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{ |
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|
348 | 0 | throw new DeploymentStopException(MessageFactory.createStaticMessage(appName), e); |
349 | 0 | } |
350 | 0 | } |
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|
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@Override |
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public String toString() |
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{ |
355 | 0 | return String.format("%s[%s]@%s", getClass().getName(), |
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appName, |
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Integer.toHexString(System.identityHashCode(this))); |
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} |
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|
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protected void doDispose() |
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{ |
362 | 0 | if (muleContext == null) |
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{ |
364 | 0 | if (logger.isInfoEnabled()) |
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{ |
366 | 0 | logger.info(String.format("App '%s' never started, nothing to dispose of", appName)); |
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} |
368 | 0 | return; |
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} |
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|
371 | 0 | if (muleContext.isStarted() && !muleContext.isDisposed()) |
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{ |
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try |
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{ |
375 | 0 | stop(); |
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} |
377 | 0 | catch (DeploymentStopException e) |
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{ |
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|
380 | 0 | logger.error(e); |
381 | 0 | } |
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} |
383 | 0 | if (logger.isInfoEnabled()) |
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{ |
385 | 0 | logger.info(miniSplash(String.format("Disposing app '%s'", appName))); |
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} |
387 | |
|
388 | 0 | muleContext.dispose(); |
389 | 0 | muleContext = null; |
390 | 0 | } |
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|
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protected void createDeploymentClassLoader() |
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{ |
394 | 0 | final String domain = descriptor.getDomain(); |
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ClassLoader parent; |
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|
397 | 0 | if (StringUtils.isBlank(domain) || DefaultMuleSharedDomainClassLoader.DEFAULT_DOMAIN_NAME.equals(domain)) |
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{ |
399 | 0 | parent = new DefaultMuleSharedDomainClassLoader(getClass().getClassLoader()); |
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} |
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else |
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{ |
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|
404 | 0 | parent = new MuleSharedDomainClassLoader(domain, getClass().getClassLoader()); |
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} |
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|
407 | 0 | this.deploymentClassLoader = new MuleApplicationClassLoader(appName, parent); |
408 | 0 | } |
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|
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protected void createRedeployMonitor() throws NotificationException |
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{ |
412 | 0 | if (logger.isInfoEnabled()) |
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{ |
414 | 0 | logger.info("Monitoring for hot-deployment: " + new File(absoluteResourcePaths [0])); |
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} |
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|
417 | 0 | final AbstractFileWatcher watcher = new ConfigFileWatcher(new File(absoluteResourcePaths [0])); |
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|
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|
420 | 0 | muleContext.registerListener(new MuleContextNotificationListener<MuleContextNotification>() |
421 | 0 | { |
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|
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public void onNotification(MuleContextNotification notification) |
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{ |
425 | 0 | final int action = notification.getAction(); |
426 | 0 | switch (action) |
427 | |
{ |
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case MuleContextNotification.CONTEXT_STARTED: |
429 | 0 | scheduleConfigMonitor(watcher); |
430 | 0 | break; |
431 | |
case MuleContextNotification.CONTEXT_STOPPING: |
432 | 0 | if (watchTimer != null) |
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{ |
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|
435 | 0 | watchTimer.shutdownNow(); |
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} |
437 | 0 | muleContext.unregisterListener(this); |
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break; |
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} |
440 | 0 | } |
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}); |
442 | 0 | } |
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|
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protected void scheduleConfigMonitor(AbstractFileWatcher watcher) |
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{ |
446 | 0 | final int reloadIntervalMs = DEFAULT_RELOAD_CHECK_INTERVAL_MS; |
447 | 0 | watchTimer = Executors.newSingleThreadScheduledExecutor(new ConfigChangeMonitorThreadFactory(appName)); |
448 | |
|
449 | 0 | watchTimer.scheduleWithFixedDelay(watcher, reloadIntervalMs, reloadIntervalMs, TimeUnit.MILLISECONDS); |
450 | |
|
451 | 0 | if (logger.isInfoEnabled()) |
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{ |
453 | 0 | logger.info("Reload interval: " + reloadIntervalMs); |
454 | |
} |
455 | 0 | } |
456 | |
|
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|
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|
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|
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|
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|
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protected File toAbsoluteFile(String path) |
463 | |
{ |
464 | 0 | final String muleHome = System.getProperty(MuleProperties.MULE_HOME_DIRECTORY_PROPERTY); |
465 | 0 | String configPath = String.format("%s/apps/%s/%s", muleHome, getAppName(), path); |
466 | 0 | return new File(configPath); |
467 | |
} |
468 | |
|
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private void createAnchorFile(String appName) |
470 | |
{ |
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try |
472 | |
{ |
473 | 0 | File marker = new File(MuleContainerBootstrapUtils.getMuleAppsDir(), String.format("%s-anchor.txt", appName)); |
474 | 0 | FileUtils.writeStringToFile(marker, ANCHOR_FILE_BLURB); |
475 | |
} |
476 | 0 | catch (IOException e) |
477 | |
{ |
478 | |
|
479 | 0 | logger.error(null, ExceptionUtils.getRootCause(e)); |
480 | |
|
481 | 0 | throw new DeploymentInitException(CoreMessages.createStaticMessage(ExceptionUtils.getRootCauseMessage(e)), e); |
482 | 0 | } |
483 | 0 | } |
484 | |
|
485 | |
protected class ConfigFileWatcher extends AbstractFileWatcher |
486 | |
{ |
487 | |
public ConfigFileWatcher(File watchedResource) |
488 | 0 | { |
489 | 0 | super(watchedResource); |
490 | 0 | } |
491 | |
|
492 | |
@Override |
493 | |
protected synchronized void onChange(File file) |
494 | |
{ |
495 | 0 | if (logger.isInfoEnabled()) |
496 | |
{ |
497 | 0 | logger.info("================== Reloading " + file); |
498 | |
} |
499 | |
|
500 | |
|
501 | 0 | final ClassLoader cl = getDeploymentClassLoader(); |
502 | 0 | Thread.currentThread().setContextClassLoader(cl); |
503 | 0 | redeploy(); |
504 | 0 | } |
505 | |
} |
506 | |
} |