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package com.sun.enterprise.admin.mbeans.custom;
import com.sun.enterprise.admin.server.core.CustomMBeanException;
import com.sun.enterprise.admin.server.core.CustomMBeanRegistration;
import com.sun.enterprise.admin.common.MBeanServerFactory;
import com.sun.enterprise.admin.mbeans.custom.loading.CustomMBeanRegistrationImpl;
import com.sun.enterprise.admin.meta.MBeanRegistryFactory;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.serverbeans.Mbean;
import com.sun.enterprise.config.serverbeans.ServerBeansFactory;
import com.sun.enterprise.admin.target.TargetBuilder;
import com.sun.enterprise.admin.target.Target;
import java.util.List;
import java.util.Map;
import java.util.Collections;
import java.util.HashMap;
import javax.management.MBeanInfo;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.MBeanServer;
public class BasicCustomMBeanOperations implements CustomMBeanOperationsMBean {
/** The instance of AdminContext that correpsponds to configuration on disk */
protected final ConfigContext acc;
public BasicCustomMBeanOperations() {
this.acc = MBeanRegistryFactory.getAdminContext().getAdminConfigContext();
}
public String createMBean(final String target, final String className) throws CustomMBeanException {
final Map<String, String> params = CustomMBeanConstants.unmodifiableMap(CustomMBeanConstants.IMPL_CLASS_NAME_KEY, className);
final Map<String, String> attributes = Collections.emptyMap();
return ( this.createMBean(target, params, attributes) );
}
public String createMBean(String target, Map<String, String> params) throws CustomMBeanException {
final Map<String, String> attributes = Collections.emptyMap();
return ( this.createMBean(target, params, attributes) );
}
public String createMBean(final String target, final Map<String, String> params, final Map<String, String> attributes) throws CustomMBeanException {
if (params == null || attributes == null)
throw new IllegalArgumentException(CMBStrings.get("InternalError", "null argument"));
Target t = null;
try {
t = TargetBuilder.INSTANCE.createTarget(target, this.acc);
} catch (final Exception e) {
throw new RuntimeException(e);
}
return ( this.createMBeanDefinitionAddingReferenceToServer(t.getName(), params, attributes) );
}
public void createMBeanRef(final String target, final String ref) throws CustomMBeanException {
throw new UnsupportedOperationException(CMBStrings.get("InternalError", "Not to be called on PE"));
}
public String deleteMBean(final String target, final String name) throws CustomMBeanException {
if (name == null)
throw new IllegalArgumentException(CMBStrings.get("InternalError", "null argument"));
Target t = null;
try {
t = TargetBuilder.INSTANCE.createTarget(target, this.acc);
} catch (final Exception e) {
throw new RuntimeException(e);
}
return ( this.deleteMBeanDefinitionRemovingReferenceFromDomain(t.getName(), name) );
}
public void deleteMBeanRef(final String target, final String ref) throws CustomMBeanException {
throw new UnsupportedOperationException(CMBStrings.get("InternalError", "Not to be called on PE"));
}
/**
* Return the MBeanInfo of a given Custom MBean.
* The MBean must be loadable from the standard App Server location.
* The code does this:
* <ul>
* <li>Register the MBean in the MBeanServer
* <li>Fetch and save the MBeanInfo
* <li>Unregister the MBean
* </ul>
* Note that if the MBean can't be deployed successfully then this method won't work.
* @param classname
* @throws com.sun.enterprise.admin.mbeans.custom.CustomMBeanException
* @return The MBeanInfo object.
*/
public MBeanInfo getMBeanInfo(String classname) throws CustomMBeanException
{
try
{
// create some unique names...
final String oname = "user:getMBeanInfo=" + System.nanoTime();
final String name = "getMBeanInfo" + System.nanoTime();
// create an MBean object because our helper code uses them...
Mbean mbean = new Mbean();
mbean.setImplClassName(classname);
mbean.setName(name);
mbean.setObjectName(oname);
mbean.setEnabled(true);
// fetch the MBeanServer
final MBeanServer mbs = MBeanServerFactory.getMBeanServer();
// Create a helper to do the reg/unreg...
CustomMBeanRegistrationImpl cmr = new CustomMBeanRegistrationImpl(mbs);
// register it
cmr.registerMBean(mbean);
// get the REAL ObjectName
ObjectName ron = cmr.getCascadingAwareObjectName(mbean);
// now fetch the MBeanInfo
MBeanInfo info = mbs.getMBeanInfo(ron);
// unregister it...
mbs.unregisterMBean(ron);
return info;
}
catch(Exception e)
{
throw new CustomMBeanException(e);
}
}
/** Method that does bulk of the work to fulfill most of the functionality of this class. Other methods
* in this class and any subclasses should consider calling this method. It does the validation
* checks before creating the <i> mbean definition </i> in server's configuration. Most importantly, if
* all is well, a custom MBean definition will be created and an application-ref will be created for a
* server so that when the target server starts up, this mbean (which is referenced) is available for registration.
* @param s String representing the name of the server instance
* @param params a Map<String, String> specifying the other parameters optionally needed for mbean
* @param attributes a Map<String, String> specifying the custom MBean initialization attributes
*/
protected String createMBeanDefinitionAddingReferenceToServer(final String s, final Map<String, String> params, final Map<String, String> attributes) throws CustomMBeanException {
try {
final Mbean mbean = this.createMBeanDefinitionInDomain(params, attributes);
final ObjectName onPostReg = new ObjectName(mbean.getObjectName());
// bug 6308668
// the mbean was created but never deleted IN THE CONTEXT
if (onExists(s, onPostReg)) //use references here, because object-name is NOT a primary key unlike name
{
ServerBeansFactory.removeMbeanDefinition(acc, mbean.getName());
throw new CustomMBeanException(CMBStrings.get("AlreadyExists", onPostReg.toString()));
}
ServerBeansFactory.addMbeanReference(this.acc, mbean.getName(), s);
return ( mbean.getName() );
} catch (final Exception e) {
throw new CustomMBeanException(e);
}
}
protected Mbean createMBeanDefinitionInDomain(final Map<String, String> params,
final Map<String, String> attributes) throws CustomMBeanException
{
final Map<String, String> mm = checkAndModifyParamsForName(params);
final String name = mm.get(CustomMBeanConstants.NAME_KEY);
if (definitionExists(name))
throw new CustomMBeanException(CMBStrings.get("AlreadyExists", name));
final ObjectName onPostReg = selectObjectName(mm, attributes);
if (!CustomMBeanConstants.CUSTOM_MBEAN_DOMAIN.equals(onPostReg.getDomain())) {
throw new IllegalArgumentException (CMBStrings.get("BadDomainName", onPostReg.getDomain(), CustomMBeanConstants.CUSTOM_MBEAN_DOMAIN));
}
// Now we mutate the params with "final" valid values
mm.put(CustomMBeanConstants.OBJECT_NAME_KEY, onPostReg.toString()); //put the correct object-name to map
final Mbean mbean = MBeanValidator.toMbean(mm, attributes, true);
try {
ServerBeansFactory.addMbeanDefinition(this.acc, mbean);
} catch (final Exception e) {
throw new CustomMBeanException(e);
}
return ( mbean );
}
protected Map<String, String> checkAndModifyParamsForName(final Map<String, String> params) throws CustomMBeanException {
checkParams(params);
final Map<String, String> paramsWithNameKey = putNameIfAbsent(params); // possibly changes the params
//at this point, it can be safely assumed that both name and class-name of the custom-mbean are available
final String name = paramsWithNameKey.get(CustomMBeanConstants.NAME_KEY);
return ( paramsWithNameKey );
}
protected ObjectName selectObjectName(final Map<String, String> mm, final Map<String, String> attributes) throws CustomMBeanException {
final ObjectName onPreReg = ObjectNameSelectionAlgorithm.select(mm);
//by the time the algorithm is accessed, if the map contains object-name it is valid
final MBeanValidator mv = new MBeanValidator();
final ObjectName onPostReg = mv.registerTestMBean(createTestMap(Collections.unmodifiableMap(mm), onPreReg), attributes);
final String className = mm.get(CustomMBeanConstants.IMPL_CLASS_NAME_KEY);
final boolean selfReg = ObjectNameSelectionAlgorithm.implementsMBeanRegistrationInterface(className);
if (onPostReg != null) { // todo -- should throw an exception if it is null!!
// note that onPostReg is *always* going to contain the "server" property, so we must account for that
final ObjectName cascadedON = CustomMBeanRegistrationImpl.getCascadingAwareObjectName(onPreReg);
// It may be setting its own name if it implements MBeanRegistration...
if (!onPostReg.equals(cascadedON) && !selfReg) {
throw new CustomMBeanException(CMBStrings.get("ObjectNameMismatch", onPreReg, CustomMBeanRegistrationImpl.getCascadingUnawareObjectName(onPostReg)));
}
}
try {
mv.unregisterTestMBean(onPostReg); //cleanup, if fails, could be ignored, as a new MBS is employed every time
} catch (final Exception e) {
e.printStackTrace();
}
//Note that we should always return the object-name without "server" property
final ObjectName onInConfig = CustomMBeanRegistrationImpl.getCascadingUnawareObjectName(onPostReg);
return ( onInConfig );
}
protected String deleteMBeanDefinitionRemovingReferenceFromDomain(final String s, final String name) throws RuntimeException {
boolean refd;
try {
refd = ServerBeansFactory.isReferencedMBean(acc, s, name);
} catch(final Exception e) {
throw new RuntimeException(e);
}
if (!refd) {
throw new RuntimeException(CMBStrings.get("RefsNotFound", s, name));
}
removeMBeanDefinitionAndReferenceFromConfigTree(s, name);
return ( name );
}
protected Map<String, String> putNameIfAbsent(final Map<String, String> m) {
final Map<String, String> nm = new HashMap<String, String>(m);
final String c = nm.get(CustomMBeanConstants.IMPL_CLASS_NAME_KEY); // must not be null
assert (c != null);
if (!nm.containsKey(CustomMBeanConstants.NAME_KEY))
nm.put(CustomMBeanConstants.NAME_KEY, c);
return ( nm );
}
protected void checkParams(final Map<String, String> params) throws IllegalArgumentException {
if (!params.containsKey(CustomMBeanConstants.IMPL_CLASS_NAME_KEY))
throw new IllegalArgumentException(CMBStrings.get("NoImplClass"));
checkValidIfPresent(params);
checkValidObjectNameIfPresent(params);
}
protected boolean definitionExists(final String name) throws CustomMBeanException {
boolean exists = false;
try {
final List<Mbean> mbeans = ServerBeansFactory.getAllMBeanDefinitions(acc);
for (Mbean m : mbeans) {
if (m.getName().equals(name)) {
exists = true;
break;
}
}
return (exists);
} catch (final Exception e) {
throw new CustomMBeanException(e);
}
}
protected boolean onExists(final String server, final ObjectName on) throws RuntimeException {
try {
boolean exists = false;
final List<Mbean> mbeans = ServerBeansFactory.getReferencedMBeans(acc, server);
for (Mbean m : mbeans) {
final String onsFromConfig = m.getObjectName();
final ObjectName onFromConfig = new ObjectName(onsFromConfig);
if (onFromConfig.equals(on)) {
exists = true;
break;
}
}
return ( exists ) ;
} catch (final Exception e) {
throw new RuntimeException(e);
}
}
///// Private Methods /////
private void checkValidIfPresent(final Map<String, String> params) throws IllegalArgumentException {
final String nameKey = CustomMBeanConstants.NAME_KEY;
final String name = params.get(nameKey);
final String cKey = CustomMBeanConstants.IMPL_CLASS_NAME_KEY;
final String cVal = params.get(cKey);
final String onKey = CustomMBeanConstants.OBJECT_NAME_KEY;
final String onVal = params.get(onKey);
if (params.containsKey(nameKey) && name == null)
throw new IllegalArgumentException(CMBStrings.get("MapHasNullParam", "Name"));
if (params.containsKey(cKey) && cVal == null)
throw new IllegalArgumentException(CMBStrings.get("MapHasNullParam", "ClassName"));
if (params.containsKey(onKey) && onVal == null)
throw new IllegalArgumentException(CMBStrings.get("MapHasNullParam", "ObjectName"));
}
private void checkValidObjectNameIfPresent(final Map<String, String> params) throws IllegalArgumentException {
final String onKey = CustomMBeanConstants.OBJECT_NAME_KEY;
final String onVal = params.get(onKey);
boolean onSpecified = params.containsKey(onKey) && onVal != null;
ObjectName on = null;
if (onSpecified) {
try {
on = new ObjectName(onVal); //see if JMX likes it
} catch(final MalformedObjectNameException me) {
throw new IllegalArgumentException(me);
}
if (on.isPattern())
throw new IllegalArgumentException(CMBStrings.get("ObjectNamePattern"));
final String d = on.getDomain();
if (!CustomMBeanConstants.CUSTOM_MBEAN_DOMAIN.equals(d)) {
throw new IllegalArgumentException (CMBStrings.get("BadDomainName", d, CustomMBeanConstants.CUSTOM_MBEAN_DOMAIN));
}
if (on.getKeyProperty(CustomMBeanConstants.SERVER_KEY) != null) {
throw new IllegalArgumentException(CMBStrings.get("ObjectNameReserved", on.toString(), CustomMBeanConstants.SERVER_KEY));
}
}
}
private void removeMBeanDefinitionAndReferenceFromConfigTree(final String server, final String ref) throws RuntimeException {
try {
ServerBeansFactory.removeMbeanReference(acc, ref, server);
ServerBeansFactory.removeMbeanDefinition(acc, ref);
} catch (final Exception e) {
throw new RuntimeException(e);
}
}
private Map<String, String> createTestMap(final Map<String, String> params, final ObjectName on) {
final Map<String, String> nm = new HashMap<String, String> (params);
nm.put(CustomMBeanConstants.OBJECT_NAME_KEY, on.toString());
return ( nm );
}
///// Private Methods /////
}
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