Revision 24841ac2
Added by Andreas Kohlbecker almost 11 years ago
| src/main/java/eu/etaxonomy/cdm/server/instance/CdmInstance.java | ||
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package eu.etaxonomy.cdm.server.instance; |
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import java.lang.reflect.InvocationTargetException; |
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import java.sql.Connection; |
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import java.sql.SQLException; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.naming.NamingException; |
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import javax.sql.DataSource; |
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import org.apache.log4j.Logger; |
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import org.eclipse.jetty.plus.jndi.Resource; |
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import org.eclipse.jetty.server.handler.ContextHandler.Context; |
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import org.eclipse.jetty.util.component.LifeCycle; |
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import org.eclipse.jetty.util.component.LifeCycle.Listener; |
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import org.eclipse.jetty.webapp.WebAppContext; |
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import eu.etaxonomy.cdm.server.Bootloader; |
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public class CdmInstance implements Listener {
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private static final Logger logger = Logger.getLogger(InstanceManager.class); |
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private WebAppContext webAppContext = null; |
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private final Configuration configuration; |
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private List<String> problems; |
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private Status status = Status.uninitialized; |
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public CdmInstance(Configuration configuration) {
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this.configuration = configuration; |
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} |
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public List<String> getProblems() {
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if (problems == null) {
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problems = new ArrayList<String>(); |
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} |
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return problems; |
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} |
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public void setProblems(List<String> problems) {
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this.problems = problems; |
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} |
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public boolean hasProblems() {
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return getProblems().size() > 0; |
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} |
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/** |
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* @param status |
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* the status to set |
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*/ |
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public void setStatus(Status status) {
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this.status = status; |
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} |
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/** |
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* @return the status |
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*/ |
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public Status getStatus() {
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return status; |
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} |
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/** |
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* @return the enabled |
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*/ |
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public boolean isEnabled() {
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return !status.equals(Status.disabled); |
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} |
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/** |
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* @return the configuration |
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*/ |
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public Configuration getConfiguration() {
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return configuration; |
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} |
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/** |
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* @return the webAppContext |
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*/ |
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public WebAppContext getWebAppContext() {
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return webAppContext; |
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} |
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/** |
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* @return the webAppContext |
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*/ |
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public void setWebAppContext(WebAppContext webAppContext) {
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this.webAppContext = webAppContext; |
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} |
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/** |
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* @param <T> |
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* @param webAppContext |
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* @param attributeName |
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* @param type |
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* @return |
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*/ |
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@SuppressWarnings("unchecked")
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private <T> T getServletContextAttribute(WebAppContext webAppContext, String attributeName, Class<T> type) {
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Context servletContext = webAppContext.getServletContext(); |
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Object value = servletContext.getAttribute(attributeName); |
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if (value != null && type.isAssignableFrom(value.getClass())) {
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} |
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return (T) value; |
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} |
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@Override |
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public void lifeCycleStopping(LifeCycle event) {
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logger.info("lifeCycleStopping");
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} |
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@Override |
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public void lifeCycleStopped(LifeCycle event) {
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logger.info("lifeCycleStopped");
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} |
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@Override |
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public void lifeCycleStarting(LifeCycle event) {
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logger.info("lifeCycleStarting");
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} |
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@SuppressWarnings("unchecked")
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@Override |
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public void lifeCycleStarted(LifeCycle event) {
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logger.info("lifeCycleStarted");
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List<String> messages = getServletContextAttribute(webAppContext, Bootloader.ATTRIBUTE_ERROR_MESSAGES, List.class); |
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String dataSourceName = getServletContextAttribute(webAppContext, Bootloader.ATTRIBUTE_DATASOURCE_NAME, String.class); |
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if (messages != null && dataSourceName != null) {
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getProblems().addAll(messages); |
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setStatus(Status.error); |
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try {
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logger.warn("Stopping context '" + dataSourceName + "' due to errors reported in ServletContext");
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webAppContext.stop(); |
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} catch (Exception e) {
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logger.error(e); |
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} |
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} |
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} |
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@Override |
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public void lifeCycleFailure(LifeCycle event, Throwable cause) {
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logger.error("lifeCycleFailure");
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} |
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private static final Logger logger = Logger.getLogger(InstanceManager.class); |
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private WebAppContext webAppContext = null; |
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private Configuration configuration; |
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private List<String> problems; |
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private Status status = Status.uninitialized; |
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private Resource jndiDataSource; |
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public CdmInstance(Configuration configuration) {
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this.configuration = configuration; |
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} |
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public List<String> getProblems() {
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if (problems == null) {
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problems = new ArrayList<String>(); |
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} |
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return problems; |
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} |
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public void setProblems(List<String> problems) {
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this.problems = problems; |
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} |
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public boolean onError() {
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return status.equals(Status.error); |
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} |
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/** |
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* @param status |
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* the status to set |
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*/ |
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public void setStatus(Status status) {
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this.status = status; |
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} |
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/** |
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* @return the status |
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*/ |
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public Status getStatus() {
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return status; |
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} |
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/** |
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* @return true if status is not {@link Status#disabled}
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*/ |
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public boolean isEnabled() {
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return !status.equals(Status.disabled); |
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} |
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/** |
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* @return the configuration |
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*/ |
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public Configuration getConfiguration() {
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return configuration; |
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} |
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/** |
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* @return the configuration |
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*/ |
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public void setConfiguration(Configuration configuration) {
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this.configuration = configuration; |
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} |
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/** |
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* @return the webAppContext |
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*/ |
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public WebAppContext getWebAppContext() {
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return webAppContext; |
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} |
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/** |
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* @return the webAppContext |
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*/ |
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public void setWebAppContext(WebAppContext webAppContext) {
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this.webAppContext = webAppContext; |
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} |
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/** |
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* @param <T> |
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* @param webAppContext |
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* @param attributeName |
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* @param type |
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* @return |
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*/ |
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@SuppressWarnings("unchecked")
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private <T> T getServletContextAttribute(WebAppContext webAppContext, String attributeName, Class<T> type) {
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Context servletContext = webAppContext.getServletContext(); |
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Object value = servletContext.getAttribute(attributeName); |
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if (value != null && type.isAssignableFrom(value.getClass())) {
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} |
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return (T) value; |
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} |
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@Override |
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public void lifeCycleStopping(LifeCycle event) {
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logger.info("lifeCycleStopping");
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if(!getStatus().equals(Status.removed)){
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// never override Status.removed !!! |
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setStatus(Status.stopping); |
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} |
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} |
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@Override |
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public void lifeCycleStopped(LifeCycle event) {
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logger.info("lifeCycleStopped");
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if(!getStatus().equals(Status.removed)){
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// never override Status.removed !!! |
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setStatus(Status.stopped); |
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} |
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} |
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@Override |
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public void lifeCycleStarting(LifeCycle event) {
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logger.info("lifeCycleStarting");
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setStatus(Status.starting); |
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} |
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@SuppressWarnings("unchecked")
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@Override |
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public void lifeCycleStarted(LifeCycle event) {
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logger.info("lifeCycleStarted");
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List<String> messages = getServletContextAttribute(webAppContext, SharedAttributes.ATTRIBUTE_ERROR_MESSAGES, List.class); |
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String dataSourceName = getServletContextAttribute(webAppContext, SharedAttributes.ATTRIBUTE_DATASOURCE_NAME, String.class); |
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if (messages != null && dataSourceName != null) {
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getProblems().addAll(messages); |
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setStatus(Status.error); |
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try {
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logger.warn("Stopping context '" + dataSourceName + "' due to errors reported in ServletContext");
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webAppContext.stop(); |
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} catch (Exception e) {
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logger.error(e); |
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} |
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} |
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setStatus(Status.started); |
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} |
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@Override |
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public void lifeCycleFailure(LifeCycle event, Throwable cause) {
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logger.error("lifeCycleFailure");
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if(!getStatus().equals(Status.removed)){
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// never override Status.removed !!! |
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setStatus(Status.error); |
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} |
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getProblems().add(cause.getMessage()); |
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} |
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public void releaseWebAppContext() {
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webAppContext = null; |
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} |
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public boolean bindJndiDataSource() {
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try {
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Class<DataSource> dsCass = (Class<DataSource>) Thread.currentThread().getContextClassLoader().loadClass("com.mchange.v2.c3p0.ComboPooledDataSource");
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DataSource datasource = dsCass.newInstance(); |
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dsCass.getMethod("setDriverClass", new Class[] {String.class}).invoke(datasource, new Object[] {configuration.getDriverClass()});
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dsCass.getMethod("setJdbcUrl", new Class[] {String.class}).invoke(datasource, new Object[] {configuration.getDataSourceUrl()});
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dsCass.getMethod("setUser", new Class[] {String.class}).invoke(datasource, new Object[] {configuration.getUsername()});
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dsCass.getMethod("setPassword", new Class[] {String.class}).invoke(datasource, new Object[] {configuration.getPassword()});
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Connection connection = null; |
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String sqlerror = null; |
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try {
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connection = datasource.getConnection(); |
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connection.close(); |
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} catch (SQLException e) {
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sqlerror = e.getMessage() + "["+ e.getSQLState() + "]"; |
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getProblems().add(sqlerror); |
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setStatus(Status.error); |
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if(connection != null){
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try {connection.close();} catch (SQLException e1) { /* IGNORE */ }
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} |
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logger.error(configuration.toString() + " has problem : "+ sqlerror ); |
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} |
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if(!onError()){
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logger.info("binding jndi datasource at " + configuration.getJdbcJndiName() + " with " + configuration.getUsername() +"@"+ configuration.getDataSourceUrl());
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jndiDataSource = new Resource(configuration.getJdbcJndiName(), datasource); |
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return true; |
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} |
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} catch (IllegalArgumentException e) {
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logger.error(e); |
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e.printStackTrace(); |
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} catch (SecurityException e) {
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logger.error(e); |
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} catch (ClassNotFoundException e) {
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logger.error(e); |
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} catch (InstantiationException e) {
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logger.error(e); |
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} catch (IllegalAccessException e) {
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logger.error(e); |
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} catch (InvocationTargetException e) {
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logger.error(e); |
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} catch (NoSuchMethodException e) {
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logger.error(e); |
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} catch (NamingException e) {
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logger.error(e); |
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} |
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return false; |
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} |
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public void unbindJndiDataSource() {
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if(jndiDataSource != null){
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jndiDataSource.release(); |
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jndiDataSource = null; |
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} |
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} |
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} |
Also available in: Unified diff
start, stop of instances and reload of configuration implemented, see #3471 (cdmlib-remote-webapp instances can be stopped / started individually)