/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.apache.geode.admin.jmx.internal;
import java.io.File;
import java.io.IOException;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanRegistrationException;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.Notification;
import javax.management.NotificationFilter;
import javax.management.NotificationListener;
import javax.management.ObjectName;
import javax.management.OperationsException;
import javax.management.ReflectionException;
import javax.management.modelmbean.ModelMBean;
import javax.management.remote.JMXConnectionNotification;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
import javax.management.remote.rmi.RMIConnectorServer;
import javax.rmi.ssl.SslRMIClientSocketFactory;
import mx4j.tools.adaptor.http.HttpAdaptor;
import org.apache.logging.log4j.Logger;
import org.apache.geode.GemFireException;
import org.apache.geode.GemFireIOException;
import org.apache.geode.LogWriter;
import org.apache.geode.SystemFailure;
import org.apache.geode.admin.AdminDistributedSystem;
import org.apache.geode.admin.AdminException;
import org.apache.geode.admin.jmx.Agent;
import org.apache.geode.admin.jmx.AgentConfig;
import org.apache.geode.admin.jmx.AgentFactory;
import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.i18n.StringId;
import org.apache.geode.internal.Banner;
import org.apache.geode.internal.GemFireVersion;
import org.apache.geode.internal.admin.remote.TailLogResponse;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.InternalLogWriter;
import org.apache.geode.internal.logging.LogConfig;
import org.apache.geode.internal.logging.LogService;
import org.apache.geode.internal.logging.LogWriterFactory;
import org.apache.geode.internal.logging.LoggingThreadGroup;
import org.apache.geode.internal.logging.log4j.AlertAppender;
import org.apache.geode.internal.logging.log4j.LocalizedMessage;
import org.apache.geode.internal.logging.log4j.LogMarker;
import org.apache.geode.internal.logging.log4j.LogWriterAppender;
import org.apache.geode.internal.logging.log4j.LogWriterAppenders;
/**
* The GemFire JMX Agent provides the ability to administrate one GemFire distributed system via
* JMX.
*
* @since GemFire 3.5
*/
public class AgentImpl implements org.apache.geode.admin.jmx.Agent,
org.apache.geode.admin.jmx.internal.ManagedResource {
private static final Logger logger = LogService.getLogger();
/**
* MX4J HttpAdaptor only supports "basic" as an authentication method. Enabling HttpAdaptor
* authentication ({@link AgentConfig#HTTP_AUTHENTICATION_ENABLED_NAME}) causes the browser to
* require a login with username ({@link AgentConfig#HTTP_AUTHENTICATION_USER_NAME}) and password
* ({@link AgentConfig#HTTP_AUTHENTICATION_PASSWORD_NAME}).
*/
private static final String MX4J_HTTPADAPTOR_BASIC_AUTHENTICATION = "basic";
/** JMX Service URL template for JMX/RMI Connector Server */
private static final String JMX_SERVICE_URL = "service:jmx:rmi://{0}:{1}/jndi/rmi://{2}:{3}{4}";
/**
* Set third-party logging configration: MX4J, Jakarta Commons-Logging.
*/
static {
checkDebug();
String commonsLog = System.getProperty("org.apache.commons.logging.log");
if (commonsLog == null || commonsLog.length() == 0) {
System.setProperty("org.apache.commons.logging.log",
"org.apache.commons.logging.impl.SimpleLog");
}
}
/** Enables mx4j tracing if Agent debugging is enabled. */
private static void checkDebug() {
try {
if (Boolean.getBoolean("gfAgentDebug")) {
mx4j.log.Log.setDefaultPriority(mx4j.log.Logger.TRACE); // .DEBUG
}
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
/* ignore */
}
}
// -------------------------------------------------------------------------
// Member variables
// -------------------------------------------------------------------------
/** This Agent's log writer */
private LogWriterAppender logWriterAppender;
private InternalLogWriter logWriter;
/** This Agent's JMX http adaptor from MX4J */
private HttpAdaptor httpAdaptor;
/** This Agent's RMI Connector Server from MX4J */
private JMXConnectorServer rmiConnector;
/** The name of the MBean manages this resource */
private final String mbeanName;
/** The ObjectName of the MBean that manages this resource */
private final ObjectName objectName;
/** The actual ModelMBean that manages this resource */
private ModelMBean modelMBean;
/** The configuration for this Agent */
private final AgentConfigImpl agentConfig;
/**
* The <code>AdminDistributedSystem</code> this Agent is currently connected to or
* <code>null</code>
*/
private AdminDistributedSystem system;
/** The agent's configuration file */
private String propertyFile;
/**
* A lock object to guard the Connect and Disconnect calls being made on the agent for connections
* to the DS
**/
private Object CONN_SYNC = new Object();
protected MemberInfoWithStatsMBean memberInfoWithStatsMBean;
private MBeanServer mBeanServer;
// -------------------------------------------------------------------------
// Constructor(s)
// -------------------------------------------------------------------------
/**
* Constructs a new Agent using the specified configuration.
*
* @param agentConfig instance of configuration for Agent
* @throws org.apache.geode.admin.AdminException TODO-javadocs
* @throws IllegalArgumentException if agentConfig is null
*/
public AgentImpl(AgentConfigImpl agentConfig) throws AdminException, IllegalArgumentException {
addShutdownHook();
if (agentConfig == null) {
throw new IllegalArgumentException(
LocalizedStrings.AgentImpl_AGENTCONFIG_MUST_NOT_BE_NULL.toLocalizedString());
}
this.agentConfig = (AgentConfigImpl) agentConfig;
this.mbeanName = MBEAN_NAME_PREFIX + MBeanUtil.makeCompliantMBeanNameProperty("Agent");
try {
this.objectName = new ObjectName(this.mbeanName);
} catch (MalformedObjectNameException ex) {
String s = LocalizedStrings.AgentImpl_WHILE_CREATING_OBJECTNAME_0
.toLocalizedString(new Object[] {this.mbeanName});
throw new AdminException(s, ex);
}
this.propertyFile = this.agentConfig.getPropertyFile().getAbsolutePath();
// bind address only affects how the Agent VM connects to the system...
// It should be set only once in the agent lifecycle
this.agentConfig.setBindAddress(getBindAddress());
// LOG: create LogWriterAppender and LogWriterLogger
initLogWriter();
mBeanServer = MBeanUtil.start();
MBeanUtil.createMBean(this);
initializeHelperMbean();
}
private void initializeHelperMbean() {
try {
memberInfoWithStatsMBean = new MemberInfoWithStatsMBean(this);
MBeanServer mbs = getMBeanServer();
mbs.registerMBean(memberInfoWithStatsMBean, memberInfoWithStatsMBean.getObjectName());
/*
* We are not re-throwing these exceptions as failure create/register the GemFireTypesWrapper
* will not stop the Agent from working. But we are logging it as it could be an indication of
* some problem. Also not creating Localized String for the exception.
*/
} catch (OperationsException e) {
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_FAILED_TO_INITIALIZE_MEMBERINFOWITHSTATSMBEAN), e);
} catch (MBeanRegistrationException e) {
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_FAILED_TO_INITIALIZE_MEMBERINFOWITHSTATSMBEAN), e);
} catch (AdminException e) {
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_FAILED_TO_INITIALIZE_MEMBERINFOWITHSTATSMBEAN), e);
}
}
// -------------------------------------------------------------------------
// Public operations
// -------------------------------------------------------------------------
public AgentConfig getConfig() {
return this.agentConfig;
}
public AdminDistributedSystem getDistributedSystem() {
return this.system;
}
/**
* Persists the current Agent configuration to its property file.
*
* @throws GemFireIOException if unable to persist the configuration to props
* @see #getPropertyFile
*/
public void saveProperties() {
throw new GemFireIOException("saveProperties is no longer supported for security reasons");
}
/**
* Starts the jmx agent
*/
public void start() {
checkDebug();
this.agentConfig.validate();
if (mBeanServer == null) {
mBeanServer = MBeanUtil.start();
}
try {
startHttpAdaptor();
} catch (StartupException e) {
AlertAppender.getInstance().shuttingDown();
LogWriterAppenders.stop(LogWriterAppenders.Identifier.MAIN);
LogWriterAppenders.destroy(LogWriterAppenders.Identifier.MAIN);
throw e;
}
try {
startRMIConnectorServer();
} catch (StartupException e) {
stopHttpAdaptor();
AlertAppender.getInstance().shuttingDown();
LogWriterAppenders.stop(LogWriterAppenders.Identifier.MAIN);
LogWriterAppenders.destroy(LogWriterAppenders.Identifier.MAIN);
throw e;
}
try {
startSnmpAdaptor();
} catch (StartupException e) {
stopRMIConnectorServer();
stopHttpAdaptor();
AlertAppender.getInstance().shuttingDown();
LogWriterAppenders.stop(LogWriterAppenders.Identifier.MAIN);
LogWriterAppenders.destroy(LogWriterAppenders.Identifier.MAIN);
throw e;
}
if (this.agentConfig.getAutoConnect()) {
try {
connectToSystem();
/*
* Call Agent.stop() if connectToSystem() fails. This should clean up agent-DS connection &
* stop all the HTTP/RMI/SNMP adapters started earlier.
*/
} catch (AdminException ex) {
logger.error(LocalizedMessage.create(LocalizedStrings.AgentImpl_AUTO_CONNECT_FAILED__0,
ex.getMessage()));
this.stop();
throw new StartupException(ex);
} catch (MalformedObjectNameException ex) {
StringId autoConnectFailed = LocalizedStrings.AgentImpl_AUTO_CONNECT_FAILED__0;
logger.error(LocalizedMessage.create(autoConnectFailed, ex.getMessage()));
this.stop();
throw new StartupException(new AdminException(
autoConnectFailed.toLocalizedString(new Object[] {ex.getMessage()}), ex));
}
} // getAutoConnect
logger.info(LocalizedMessage.create(LocalizedStrings.AgentImpl_GEMFIRE_JMX_AGENT_IS_RUNNING));
LogWriterAppenders.startupComplete(LogWriterAppenders.Identifier.MAIN);
if (memberInfoWithStatsMBean == null) {
initializeHelperMbean();
}
}
/**
* Deregisters everything this Agent registered and releases the MBeanServer.
*/
public void stop() {
try {
logger.info(LocalizedMessage.create(LocalizedStrings.AgentImpl_STOPPING_JMX_AGENT));
AlertAppender.getInstance().shuttingDown();
LogWriterAppenders.stop(LogWriterAppenders.Identifier.MAIN);
// stop the GemFire Distributed System
stopDistributedSystem();
// stop all JMX Adaptors and Connectors...
stopHttpAdaptor();
stopRMIConnectorServer();
memberInfoWithStatsMBean = null;
stopSnmpAdaptor();
// release the MBeanServer for cleanup...
MBeanUtil.stop();
mBeanServer = null;
// remove the register shutdown hook which disconnects the Agent from the Distributed System
// upon JVM shutdown
removeShutdownHook();
logger.info(LocalizedMessage.create(LocalizedStrings.AgentImpl_AGENT_HAS_STOPPED));
} finally {
LogWriterAppenders.destroy(LogWriterAppenders.Identifier.MAIN);
LoggingThreadGroup.cleanUpThreadGroups(); // bug35388 - logwriters accumulate, causing mem
// leak
}
}
private void stopDistributedSystem() {
// disconnect from the distributed system...
try {
disconnectFromSystem();
} catch (Exception e) {
// disconnectFromSystem already prints any Exceptions
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
throw err;
} catch (Error e) {
// Whenever you catch Error or Throwable, you must also catch VirtualMachineError (see above).
// However, there is _still_ a possibility that you are dealing with a cascading error
// condition,
// so you also need to check to see if the JVM is still usable:
SystemFailure.checkFailure();
}
}
public ObjectName manageDistributedSystem() throws MalformedObjectNameException {
synchronized (CONN_SYNC) {
if (isConnected()) {
return ((AdminDistributedSystemJmxImpl) this.system).getObjectName();
}
return null;
}
}
/**
* Connects to the DistributedSystem currently described by this Agent's attributes for
* administration and monitoring.
*
* @return the object name of the system that the Agent is now connected to
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(
value = "ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD",
justification = "This is only a style warning.")
public ObjectName connectToSystem() throws AdminException, MalformedObjectNameException {
synchronized (CONN_SYNC) {
try {
if (isConnected()) {
return ((AdminDistributedSystemJmxImpl) this.system).getObjectName();
}
DistributionManager.isDedicatedAdminVM = true;
AdminDistributedSystemJmxImpl systemJmx = (AdminDistributedSystemJmxImpl) this.system;
if (systemJmx == null) {
systemJmx = (AdminDistributedSystemJmxImpl) createDistributedSystem(this.agentConfig);
this.system = systemJmx;
}
systemJmx.connect(this.logWriter);
return new ObjectName(systemJmx.getMBeanName());
} catch (AdminException e) {
logger.warn(e.getMessage(), e);
throw e;
} catch (RuntimeException e) {
logger.warn(e.getMessage(), e);
throw e;
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Error e) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logger.error(e.getMessage(), e);
throw e;
}
}
}
/**
* Disconnects from the current DistributedSystem (if connected to one).
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(
value = "ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD",
justification = "This is only a style warning.")
public void disconnectFromSystem() {
synchronized (CONN_SYNC) {
try {
if (this.system == null || !this.system.isConnected()) {
return;
}
((AdminDistributedSystemJmxImpl) this.system).disconnect();
// this.system = null;
} catch (RuntimeException e) {
logger.warn(e.getMessage(), e);
throw e;
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Error e) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logger.warn(e.getMessage(), e);
throw e;
} finally {
DistributionManager.isDedicatedAdminVM = false;
}
}
}
/**
* Retrieves a displayable snapshot of this Agent's log.
*
* @return snapshot of the current log
*/
public String getLog() {
String childTail = tailFile(this.logWriterAppender.getChildLogFile());
String mainTail = tailFile(new File(this.agentConfig.getLogFile()));
if (childTail == null && mainTail == null) {
return LocalizedStrings.AgentImpl_NO_LOG_FILE_CONFIGURED_LOG_MESSAGES_WILL_BE_DIRECTED_TO_STDOUT
.toLocalizedString();
} else {
StringBuffer result = new StringBuffer();
if (mainTail != null) {
result.append(mainTail);
}
if (childTail != null) {
result
.append("\n" + LocalizedStrings.AgentImpl_TAIL_OF_CHILD_LOG.toLocalizedString() + "\n");
result.append(childTail);
}
return result.toString();
}
}
/**
* Retrieves display-friendly GemFire version information.
*/
public String getVersion() {
return GemFireVersion.asString();
}
// -------------------------------------------------------------------------
// Public attribute accessors/mutators
// -------------------------------------------------------------------------
/** Returns true if this Agent is currently connected to a system. */
public boolean isConnected() {
boolean result = false;
synchronized (CONN_SYNC) {
result = ((this.system != null) && this.system.isConnected());
}
return result;
}
/**
* Gets the agent's property file. This is the file it will use when saving its configuration. It
* was also used when the agent started to initialize its configuration.
*
* @return the agent's property file
*/
public String getPropertyFile() {
return this.propertyFile;
}
/**
* Sets the agent's property file.
*
* @param value the name of the file to save the agent properties in.
* @throws IllegalArgumentException if the specified file is a directory.
* @throws IllegalArgumentException if the specified file's parent is not an existing directory.
*/
public void setPropertyFile(String value) {
File f = (new File(value)).getAbsoluteFile();
if (f.isDirectory()) {
throw new IllegalArgumentException(
LocalizedStrings.AgentImpl_THE_FILE_0_IS_A_DIRECTORY.toLocalizedString(f));
}
File parent = f.getParentFile();
if (parent != null) {
if (!parent.isDirectory()) {
throw new IllegalArgumentException(
LocalizedStrings.AgentImpl_THE_DIRECTORY_0_DOES_NOT_EXIST.toLocalizedString(parent));
}
}
this.propertyFile = f.getPath();
}
/**
* Gets the mcastAddress of the distributed system that this Agent is managing.
*
* @return The mcastAddress value
*/
public String getMcastAddress() {
return this.agentConfig.getMcastAddress();
}
/**
* Sets the mcastAddress of the distributed system that this Agent is managing.
*
* @param mcastAddress The new mcastAddress value
*/
public void setMcastAddress(String mcastAddress) {
this.agentConfig.setMcastAddress(mcastAddress);
}
/**
* Gets the mcastPort of the distributed system that this Agent is managing.
*
* @return The mcastPort value
*/
public int getMcastPort() {
return this.agentConfig.getMcastPort();
}
/**
* Sets the mcastPort of the distributed system that this Agent is managing.
*
* @param mcastPort The new mcastPort value
*/
public void setMcastPort(int mcastPort) {
this.agentConfig.setMcastPort(mcastPort);
}
/**
* Gets the locators of the distributed system that this Agent is managing.
* <p>
* Format is a comma-delimited list of "host[port]" entries.
*
* @return The locators value
*/
public String getLocators() {
return this.agentConfig.getLocators();
}
/**
* Sets the locators of the distributed system that this Agent is managing.
* <p>
* Format is a comma-delimited list of "host[port]" entries.
*
* @param locators The new locators value
*/
public void setLocators(String locators) {
this.agentConfig.setLocators(locators);
}
/**
* Gets the membership UDP port range in the distributed system that this Agent is monitoring.
* <p>
* This range is given as two numbers separated by a minus sign like "min-max"
*
* @return membership UDP port range
*/
public String getMembershipPortRange() {
return this.agentConfig.getMembershipPortRange();
}
/**
* Sets the membership UDP port range in the distributed system that this Agent is monitoring.
* <p>
* This range is given as two numbers separated by a minus sign like "min-max"
*
* @param membershipPortRange membership UDP port range
*/
public void setMembershipPortRange(String membershipPortRange) {
this.agentConfig.setMembershipPortRange(membershipPortRange);
}
/**
* Gets the bindAddress of the distributed system that this Agent is managing.
*
* @return The bindAddress value
*/
public String getBindAddress() {
return this.agentConfig.getBindAddress();
}
/**
* Sets the bindAddress of the distributed system that this Agent is managing.
*
* @param bindAddress The new bindAddress value
*/
public void setBindAddress(String bindAddress) {
this.agentConfig.setBindAddress(bindAddress);
}
/**
* Retrieves the command that the DistributedSystem will use to perform remote manipulation of
* config files and log files.
*
* @return the remote command for DistributedSystem
*/
public String getRemoteCommand() {
return this.agentConfig.getRemoteCommand();
}
/**
* Sets the command that the DistributedSystem will use to perform remote manipulation of config
* files and log files.
*
* @param remoteCommand the remote command for DistributedSystem
*/
public void setRemoteCommand(String remoteCommand) {
this.agentConfig.setRemoteCommand(remoteCommand);
}
/** Returns the system identity for the DistributedSystem */
public String getSystemId() {
return this.agentConfig.getSystemId();
}
/** Sets the system identity for the DistributedSystem */
public void setSystemId(String systemId) {
this.agentConfig.setSystemId(systemId);
}
/**
* Gets the logFileSizeLimit in megabytes of this Agent. Zero indicates no limit.
*
* @return The logFileSizeLimit value
*/
public int getLogFileSizeLimit() {
return this.agentConfig.getLogFileSizeLimit();
}
/**
* Sets the logFileSizeLimit in megabytes of this Agent. Zero indicates no limit.
*
* @param logFileSizeLimit The new logFileSizeLimit value
*/
public void setLogFileSizeLimit(int logFileSizeLimit) {
this.agentConfig.setLogFileSizeLimit(logFileSizeLimit);
LogWriterAppenders.configChanged(LogWriterAppenders.Identifier.MAIN);
}
/**
* Gets the logDiskSpaceLimit in megabytes of this Agent. Zero indicates no limit.
*
* @return The logDiskSpaceLimit value
*/
public int getLogDiskSpaceLimit() {
return this.agentConfig.getLogDiskSpaceLimit();
}
/**
* Sets the logDiskSpaceLimit in megabytes of this Agent. Zero indicates no limit.
*
* @param logDiskSpaceLimit The new logDiskSpaceLimit value
*/
public void setLogDiskSpaceLimit(int logDiskSpaceLimit) {
this.agentConfig.setLogDiskSpaceLimit(logDiskSpaceLimit);
LogWriterAppenders.configChanged(LogWriterAppenders.Identifier.MAIN);
}
/**
* Gets the logFile name for this Agent to log to.
*
* @return The logFile value
*/
public String getLogFile() {
return this.agentConfig.getLogFile();
}
/**
* Sets the logFile name for this Agent to log to.
*
* @param logFile The new logFile value
*/
public void setLogFile(String logFile) {
this.agentConfig.setLogFile(logFile);
LogWriterAppenders.configChanged(LogWriterAppenders.Identifier.MAIN);
}
/**
* Gets the logLevel of this Agent.
*
* @return The logLevel value
*/
public String getLogLevel() {
return this.agentConfig.getLogLevel();
}
/**
* Sets the logLevel of this Agent.
*
* @param logLevel The new logLevel value
*/
public void setLogLevel(String logLevel) {
this.agentConfig.setLogLevel(logLevel);
LogWriterAppenders.configChanged(LogWriterAppenders.Identifier.MAIN);
}
/** Returns true if the Agent is set to auto connect to a system. */
public boolean getAutoConnect() {
return this.agentConfig.getAutoConnect();
}
/** Returns true if the Agent is set to auto connect to a system. */
public boolean isAutoConnect() {
return this.agentConfig.getAutoConnect();
}
/** Sets or unsets the option to auto connect to a system. */
public void setAutoConnect(boolean v) {
this.agentConfig.setAutoConnect(v);
}
/**
* Returns the address (URL) on which the RMI connector server runs or <code>null</code> if the
* RMI connector server has not been started. This method is used primarily for testing purposes.
*
* @see JMXConnectorServer#getAddress()
*/
public JMXServiceURL getRMIAddress() {
if (this.rmiConnector != null) {
return this.rmiConnector.getAddress();
} else {
return null;
}
}
/**
* Gets the configuration for this Agent.
*
* @return the configuration for this Agent
*/
protected AgentConfig getAgentConfig() {
return this.agentConfig;
}
// -------------------------------------------------------------------------
// Internal implementation methods
// -------------------------------------------------------------------------
/** Returns the tail of the system log specified by <code>File</code>. */
private String tailFile(File f) {
try {
return TailLogResponse.tailSystemLog(f);
} catch (IOException ex) {
return LocalizedStrings.AgentImpl_COULD_NOT_TAIL_0_BECAUSE_1
.toLocalizedString(new Object[] {f, ex});
}
}
/**
* Returns the active MBeanServer which has any GemFire MBeans registered.
*
* @return the GemFire mbeanServer
*/
public MBeanServer getMBeanServer() {
return mBeanServer;
}
// /**
// * Returns the active modeler Registry which has been initialized with all
// * the ModelMBean descriptors needed for GemFire MBeans.
// *
// * @return the modeler registry
// */
// private Registry getRegistry() {
// return MBeanUtil.getRegistry();
// }
/**
* Gets the current instance of LogWriter for logging
*
* @return the logWriter
*/
public LogWriter getLogWriter() {
return this.logWriter;
}
private final Thread shutdownHook =
new Thread(LoggingThreadGroup.createThreadGroup("Shutdown"), "Shutdown") {
@Override
public void run() {
disconnectFromSystem();
}
};
/**
* Adds a ShutdownHook to the Agent for cleaning up any resources
*/
private void addShutdownHook() {
if (!Boolean.getBoolean(
org.apache.geode.distributed.internal.InternalDistributedSystem.DISABLE_SHUTDOWN_HOOK_PROPERTY)) {
Runtime.getRuntime().addShutdownHook(shutdownHook);
}
}
private void removeShutdownHook() {
if (!Boolean.getBoolean(
org.apache.geode.distributed.internal.InternalDistributedSystem.DISABLE_SHUTDOWN_HOOK_PROPERTY)) {
Runtime.getRuntime().removeShutdownHook(shutdownHook);
}
}
/**
* Creates a LogWriterI18n for this Agent to use in logging.
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "RV_RETURN_VALUE_IGNORED_BAD_PRACTICE",
justification = "Return value for file delete is not important here.")
private void initLogWriter() throws org.apache.geode.admin.AdminException {
final LogConfig logConfig = this.agentConfig.createLogConfig();
// LOG: create logWriterAppender here
this.logWriterAppender = LogWriterAppenders
.getOrCreateAppender(LogWriterAppenders.Identifier.MAIN, false, logConfig, false);
// LOG: look in AgentConfigImpl for existing LogWriter to use
InternalLogWriter existingLogWriter = this.agentConfig.getInternalLogWriter();
if (existingLogWriter != null) {
this.logWriter = existingLogWriter;
} else {
// LOG: create LogWriterLogger
this.logWriter = LogWriterFactory.createLogWriterLogger(false, false, logConfig, false);
// LOG: changed statement from config to info
this.logWriter.info(Banner.getString(null));
// Set this log writer in AgentConfigImpl
this.agentConfig.setInternalLogWriter(this.logWriter);
}
// LOG: create logWriter here
this.logWriter = LogWriterFactory.createLogWriterLogger(false, false, logConfig, false);
// Set this log writer in AgentConfig
this.agentConfig.setInternalLogWriter(this.logWriter);
// Print Banner information
logger.info(Banner.getString(this.agentConfig.getOriginalArgs()));
// LOG:CONFIG: changed next three statements from config to info
logger.info(LogMarker.CONFIG, LocalizedStrings.AgentImpl_AGENT_CONFIG_PROPERTY_FILE_NAME_0
.toLocalizedString(AgentConfigImpl.retrievePropertyFile()));
logger.info(LogMarker.CONFIG, this.agentConfig.getPropertyFileDescription());
logger.info(LogMarker.CONFIG, this.agentConfig.toPropertiesAsString());
}
/**
* Stops the HttpAdaptor and its XsltProcessor. Unregisters the associated MBeans.
*/
private void stopHttpAdaptor() {
if (!this.agentConfig.isHttpEnabled())
return;
// stop the adaptor...
try {
this.httpAdaptor.stop();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
MBeanUtil.unregisterMBean(getHttpAdaptorName());
MBeanUtil.unregisterMBean(getXsltProcessorName());
} catch (MalformedObjectNameException e) {
logger.warn(e.getMessage(), e);
}
}
/** Stops the RMIConnectorServer and unregisters its MBean. */
private void stopRMIConnectorServer() {
if (!this.agentConfig.isRmiEnabled())
return;
// stop the RMI Connector server...
try {
this.rmiConnector.stop();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
ObjectName rmiRegistryNamingName = getRMIRegistryNamingName();
if (this.agentConfig.isRmiRegistryEnabled()
&& mBeanServer.isRegistered(rmiRegistryNamingName)) {
String[] empty = new String[0];
mBeanServer.invoke(rmiRegistryNamingName, "stop", empty, empty);
MBeanUtil.unregisterMBean(rmiRegistryNamingName);
}
} catch (MalformedObjectNameException e) {
logger.warn(e.getMessage(), e);
} catch (InstanceNotFoundException e) {
logger.warn(e.getMessage(), e);
} catch (ReflectionException e) {
logger.warn(e.getMessage(), e);
} catch (MBeanException e) {
logger.warn(e.getMessage(), e);
}
try {
ObjectName rmiConnectorServerName = getRMIConnectorServerName();
if (mBeanServer.isRegistered(rmiConnectorServerName)) {
MBeanUtil.unregisterMBean(rmiConnectorServerName);
}
} catch (MalformedObjectNameException e) {
logger.warn(e.getMessage(), e);
}
}
/** Stops the SnmpAdaptor and unregisters its MBean. */
private void stopSnmpAdaptor() {
if (!this.agentConfig.isSnmpEnabled())
return;
// stop the SnmpAdaptor...
try {
getMBeanServer().invoke(getSnmpAdaptorName(), "unbind", new Object[0], new String[0]);
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
MBeanUtil.unregisterMBean(getSnmpAdaptorName());
} catch (MalformedObjectNameException e) {
logger.warn(e.getMessage(), e);
}
}
/** Returns the JMX ObjectName for the RMI registry Naming MBean. */
private ObjectName getRMIRegistryNamingName()
throws javax.management.MalformedObjectNameException {
return ObjectName.getInstance("naming:type=rmiregistry");
}
/** Returns the JMX ObjectName for the HttpAdaptor. */
private ObjectName getHttpAdaptorName() throws javax.management.MalformedObjectNameException {
return new ObjectName("Server:name=HttpAdaptor");
}
/** Returns the JMX ObjectName for the RMIConnectorServer. */
private ObjectName getRMIConnectorServerName()
throws javax.management.MalformedObjectNameException {
return new ObjectName("connectors:protocol=rmi");
}
/** Returns the JMX ObjectName for the SnmpAdaptor. */
private ObjectName getSnmpAdaptorName() throws javax.management.MalformedObjectNameException {
return new ObjectName("Adaptors:protocol=SNMP");
}
/** Returns the JMX ObjectName for the HttpAdaptor's XsltProcessor. */
private ObjectName getXsltProcessorName() throws javax.management.MalformedObjectNameException {
return new ObjectName("Server:name=XSLTProcessor");
}
// -------------------------------------------------------------------------
// Factory method for creating DistributedSystem
// -------------------------------------------------------------------------
/**
* Creates and connects to a <code>DistributedSystem</code>.
*
* @param config
*/
private AdminDistributedSystem createDistributedSystem(AgentConfigImpl config)
throws org.apache.geode.admin.AdminException {
return new AdminDistributedSystemJmxImpl(config);
}
// -------------------------------------------------------------------------
// Agent main
// -------------------------------------------------------------------------
/**
* Command-line main for running the GemFire Management Agent.
* <p>
* Accepts command-line arguments matching the options in {@link AgentConfig} and
* {@link org.apache.geode.admin.DistributedSystemConfig}.
* <p>
* <code>AgentConfig</code> will convert -Jarguments to System properties.
*/
public static void main(String[] args) {
SystemFailure.loadEmergencyClasses();
AgentConfigImpl ac;
try {
ac = new AgentConfigImpl(args);
} catch (RuntimeException ex) {
System.err
.println(LocalizedStrings.AgentImpl_FAILED_READING_CONFIGURATION_0.toLocalizedString(ex));
System.exit(1);
return;
}
try {
Agent agent = AgentFactory.getAgent(ac);
agent.start();
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
t.printStackTrace();
System.exit(1);
}
}
// -------------------------------------------------------------------------
// MX4J Connectors/Adaptors
// -------------------------------------------------------------------------
private void createRMIRegistry() throws Exception {
if (!this.agentConfig.isRmiRegistryEnabled()) {
return;
}
MBeanServer mbs = getMBeanServer();
String host = this.agentConfig.getRmiBindAddress();
int port = this.agentConfig.getRmiPort();
/*
* Register and start the rmi-registry naming MBean, which is needed by JSR 160
* RMIConnectorServer
*/
ObjectName registryName = getRMIRegistryNamingName();
try {
RMIRegistryService registryNamingService = null;
if (host != null && !("".equals(host.trim()))) {
registryNamingService = new RMIRegistryService(host, port);
} else {
registryNamingService = new RMIRegistryService(port);
}
mbs.registerMBean(registryNamingService, registryName);
} catch (javax.management.InstanceAlreadyExistsException e) {
logger.info(LocalizedMessage.create(LocalizedStrings.AgentImpl_0__IS_ALREADY_REGISTERED,
registryName));
}
mbs.invoke(registryName, "start", null, null);
}
/**
* Defines and starts the JMX RMIConnector and service.
* <p>
* If {@link AgentConfig#isRmiEnabled} returns false, then this adaptor will not be started.
*/
private void startRMIConnectorServer() {
if (!this.agentConfig.isRmiEnabled())
return;
String rmiBindAddress = this.agentConfig.getRmiBindAddress();
// Set RMI Stubs to use the given RMI Bind Address
// Default bindAddress is "", if none is set - ignore if not set
// If java.rmi.server.hostname property is specified then
// that override is not changed
String rmiStubServerNameKey = "java.rmi.server.hostname";
String overrideHostName = System.getProperty(rmiStubServerNameKey);
if ((overrideHostName == null || overrideHostName.trim().length() == 0)
&& (rmiBindAddress != null && rmiBindAddress.trim().length() != 0)) {
System.setProperty(rmiStubServerNameKey, rmiBindAddress);
logger.info(LocalizedMessage.create(LocalizedStrings.AgentImpl_SETTING_0,
new StringBuilder(rmiStubServerNameKey).append(" = ").append(rmiBindAddress)));
}
try {
createRMIRegistry();
ObjectName objName = getRMIConnectorServerName();
// make sure this adaptor is not already registered...
if (getMBeanServer().isRegistered(objName)) {
// dunno how we got here...
logger.info(LocalizedMessage.create(
LocalizedStrings.AgentImpl_RMICONNECTORSERVER_ALREADY_REGISTERED_AS__0, objName));
return;
}
/*
* url defined as: service:jmx:protocol:sap where 1. protocol: rmi 2. sap is:
* [host[:port]][url-path] where host: rmi-binding-address port: rmi-server-port url-path:
* /jndi/rmi://<rmi-binding-address>:<rmi-port><JNDI_NAME>
*/
String urlString = null;
String connectorServerHost = "";
int connectorServerPort = this.agentConfig.getRmiServerPort();
String rmiRegistryHost = "";
int rmiRegistryPort = this.agentConfig.getRmiPort();
// Set registryHost to localhost if not specified
// RMI stubs would use a default IP if namingHost is left empty
if (rmiBindAddress == null || rmiBindAddress.trim().length() == 0) {
connectorServerHost = "localhost";
rmiRegistryHost = "";
} else {
connectorServerHost = applyRFC2732(rmiBindAddress);
rmiRegistryHost = connectorServerHost;
}
urlString = MessageFormat.format(AgentImpl.JMX_SERVICE_URL, connectorServerHost,
String.valueOf(connectorServerPort), rmiRegistryHost, String.valueOf(rmiRegistryPort),
JNDI_NAME);
logger.debug("JMX Service URL string is : \"{}\"", urlString);
// The address of the connector
JMXServiceURL url = new JMXServiceURL(urlString);
Map<String, Object> env = new HashMap<String, Object>();
// env.put(Context.INITIAL_CONTEXT_FACTORY,
// "com.sun.jndi.rmi.registry.RegistryContextFactory");
// env.put(Context.PROVIDER_URL, "rmi://localhost:1099");
RMIServerSocketFactory ssf = new MX4JServerSocketFactory(this.agentConfig.isAgentSSLEnabled(), // true,
this.agentConfig.isAgentSSLRequireAuth(), // true,
this.agentConfig.getAgentSSLProtocols(), // "any",
this.agentConfig.getAgentSSLCiphers(), // "any",
this.agentConfig.getRmiBindAddress(), 10, // backlog
this.agentConfig.getGfSecurityProperties());
env.put(RMIConnectorServer.RMI_SERVER_SOCKET_FACTORY_ATTRIBUTE, ssf);
if (this.agentConfig.isAgentSSLEnabled()) {
RMIClientSocketFactory csf = new SslRMIClientSocketFactory();
env.put(RMIConnectorServer.RMI_CLIENT_SOCKET_FACTORY_ATTRIBUTE, csf);
}
MBeanServer mbs = null; // will be set by registering w/ mbeanServer
this.rmiConnector = JMXConnectorServerFactory.newJMXConnectorServer(url, env, mbs);
// for cleanup
this.rmiConnector.addNotificationListener(new ConnectionNotificationAdapter(),
new ConnectionNotificationFilterImpl(), this);
// Register the JMXConnectorServer in the MBeanServer
getMBeanServer().registerMBean(this.rmiConnector, objName);
// Start the JMXConnectorServer
this.rmiConnector.start();
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logger.error(LocalizedStrings.AgentImpl_FAILED_TO_START_RMICONNECTORSERVER, t);
throw new StartupException(
LocalizedStrings.AgentImpl_FAILED_TO_START_RMI_SERVICE.toLocalizedString(), t);
}
}
/**
* Starts the optional third-party AdventNet SNMP Adaptor.
* <p>
* If {@link AgentConfig#isSnmpEnabled} returns false, then this adaptor will not be started.
*/
private void startSnmpAdaptor() {
if (!this.agentConfig.isSnmpEnabled())
return;
try {
ObjectName objName = getSnmpAdaptorName();
// make sure this adaptor is not already registered...
if (getMBeanServer().isRegistered(objName)) {
// dunno how we got here...
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_SNMPADAPTOR_ALREADY_REGISTERED_AS__0, objName));
return;
}
String className = "com.adventnet.adaptors.snmp.snmpsupport.SmartSnmpAdaptor";
String snmpDir = this.agentConfig.getSnmpDirectory();
// ex:/merry2/users/klund/agent
// validate the directory...
if (snmpDir == null || snmpDir.length() == 0) {
throw new IllegalArgumentException(
LocalizedStrings.AgentImpl_SNMPDIRECTORY_MUST_BE_SPECIFIED_BECAUSE_SNMP_IS_ENABLED
.toLocalizedString());
}
File root = new File(snmpDir);
if (!root.exists()) {
throw new IllegalArgumentException(
LocalizedStrings.AgentImpl_SNMPDIRECTORY_DOES_NOT_EXIST.toLocalizedString());
}
// create the adaptor...
String[] sigs = new String[] {"java.lang.String"};
Object[] args = new Object[] {snmpDir};
String bindAddress = this.agentConfig.getSnmpBindAddress();
if (bindAddress != null && bindAddress.length() > 0) {
sigs = new String[] {"java.lang.String", sigs[0]};
args = new Object[] {bindAddress, args[0]};
}
// go...
getMBeanServer().createMBean(className, objName, args, sigs);
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logger.error(LocalizedMessage
.create(LocalizedStrings.AgentImpl_FAILED_TO_START_SNMPADAPTOR__0, t.getMessage()));
throw new StartupException(LocalizedStrings.AgentImpl_FAILED_TO_START_SNMPADAPTOR__0
.toLocalizedString(t.getMessage()), t);
}
}
/**
* Defines and starts the JMX Http Adaptor service from MX4J.
* <p>
* If {@link AgentConfig#isHttpEnabled} returns false, then this adaptor will not be started.
*/
private void startHttpAdaptor() {
if (!this.agentConfig.isHttpEnabled())
return;
try {
ObjectName objName = getHttpAdaptorName();
// make sure this adaptor is not already registered...
if (getMBeanServer().isRegistered(objName)) {
// dunno how we got here...
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_HTTPADAPTOR_ALREADY_REGISTERED_AS__0, objName));
return;
}
this.httpAdaptor = new HttpAdaptor();
// validate and set host and port values...
if (this.agentConfig.getHttpPort() > 0) {
this.httpAdaptor.setPort(this.agentConfig.getHttpPort());
logger.info(LogMarker.CONFIG,
LocalizedMessage.create(LocalizedStrings.AgentImpl_HTTP_ADAPTOR_LISTENING_ON_PORT__0,
this.agentConfig.getHttpPort()));
} else {
logger.error(LocalizedMessage.create(LocalizedStrings.AgentImpl_INCORRECT_PORT_VALUE__0,
this.agentConfig.getHttpPort()));
}
if (this.agentConfig.getHttpBindAddress() != null) {
String host = this.agentConfig.getHttpBindAddress();
logger.info(LogMarker.CONFIG, LocalizedMessage
.create(LocalizedStrings.AgentImpl_HTTP_ADAPTOR_LISTENING_ON_ADDRESS__0, host));
this.httpAdaptor.setHost(host);
} else {
logger.error(LocalizedMessage.create(LocalizedStrings.AgentImpl_INCORRECT_NULL_HOSTNAME));
}
// SSL support...
MX4JServerSocketFactory socketFactory =
new MX4JServerSocketFactory(this.agentConfig.isAgentSSLEnabled(),
this.agentConfig.isHttpSSLRequireAuth(), this.agentConfig.getAgentSSLProtocols(),
this.agentConfig.getAgentSSLCiphers(), this.agentConfig.getGfSecurityProperties());
this.httpAdaptor.setSocketFactory(socketFactory);
// authentication (user login) support...
if (this.agentConfig.isHttpAuthEnabled()) {
// this pops up a login dialog from the browser...
this.httpAdaptor.setAuthenticationMethod(MX4J_HTTPADAPTOR_BASIC_AUTHENTICATION); // only
// basic
// works
this.httpAdaptor.addAuthorization(this.agentConfig.getHttpAuthUser(),
this.agentConfig.getHttpAuthPassword());
}
// add the XsltProcessor...
this.httpAdaptor.setProcessorName(createXsltProcessor());
// register the HttpAdaptor and snap on the XsltProcessor...
getMBeanServer().registerMBean(this.httpAdaptor, objName);
this.httpAdaptor.start();
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logger.error(LocalizedMessage
.create(LocalizedStrings.AgentImpl_FAILED_TO_START_HTTPADAPTOR__0, t.getMessage()));
throw new StartupException(LocalizedStrings.AgentImpl_FAILED_TO_START_HTTPADAPTOR__0
.toLocalizedString(t.getMessage()), t);
}
}
/**
* Defines and starts the Xslt Processor helper service for the Http Adaptor.
*/
private ObjectName createXsltProcessor() throws javax.management.JMException {
ObjectName objName = getXsltProcessorName();
// make sure this mbean is not already registered...
if (getMBeanServer().isRegistered(objName)) {
// dunno how we got here...
logger.info(LocalizedMessage
.create(LocalizedStrings.AgentImpl_XSLTPROCESSOR_ALREADY_REGISTERED_AS__0, objName));
return objName;
}
getMBeanServer().registerMBean(new mx4j.tools.adaptor.http.XSLTProcessor(), objName);
return objName;
}
// -------------------------------------------------------------------------
// Private support methods...
// -------------------------------------------------------------------------
// /** Not used anymore but seems moderately useful... */
// private String[] parseSSLCiphers(String ciphers) {
// List list = new ArrayList();
// StringTokenizer st = new StringTokenizer(ciphers);
// while (st.hasMoreTokens()) {
// list.add(st.nextToken());
// }
// return (String[]) list.toArray(new String[list.size()]);
// }
// -------------------------------------------------------------------------
// SSL configuration for GemFire
// -------------------------------------------------------------------------
public boolean isSSLEnabled() {
return this.agentConfig.isSSLEnabled();
}
public void setSSLEnabled(boolean enabled) {
this.agentConfig.setSSLEnabled(enabled);
}
public String getSSLProtocols() {
return this.agentConfig.getSSLProtocols();
}
public void setSSLProtocols(String protocols) {
this.agentConfig.setSSLProtocols(protocols);
}
public String getSSLCiphers() {
return this.agentConfig.getSSLCiphers();
}
public void setSSLCiphers(String ciphers) {
this.agentConfig.setSSLCiphers(ciphers);
}
public boolean isSSLAuthenticationRequired() {
return this.agentConfig.isSSLAuthenticationRequired();
}
public void setSSLAuthenticationRequired(boolean authRequired) {
this.agentConfig.setSSLAuthenticationRequired(authRequired);
}
public Properties getSSLProperties() {
return this.agentConfig.getSSLProperties();
}
public void setSSLProperties(Properties sslProperties) {
this.agentConfig.setSSLProperties(sslProperties);
}
public void addSSLProperty(String key, String value) {
this.agentConfig.addSSLProperty(key, value);
}
public void removeSSLProperty(String key) {
this.agentConfig.removeSSLProperty(key);
}
// -------------------------------------------------------------------------
// ManagedResource implementation
// -------------------------------------------------------------------------
public String getMBeanName() {
return this.mbeanName;
}
public ModelMBean getModelMBean() {
return this.modelMBean;
}
public void setModelMBean(ModelMBean modelMBean) {
this.modelMBean = modelMBean;
}
public ObjectName getObjectName() {
return this.objectName;
}
public ManagedResourceType getManagedResourceType() {
return ManagedResourceType.AGENT;
}
public void cleanupResource() {}
static class StartupException extends GemFireException {
private static final long serialVersionUID = 6614145962199330348L;
StartupException(Throwable cause) {
super(cause);
}
StartupException(String reason, Throwable cause) {
super(reason, cause);
}
}
// -------------------------------------------------------------------------
// Other Support methods
// -------------------------------------------------------------------------
/**
* Checks the no. of active RMI clients and updates a flag in the Admin Distributed System.
*
* @see AdminDistributedSystemJmxImpl#setRmiClientCountZero(boolean)
* @since GemFire 6.0
*/
void updateRmiClientsCount() {
int noOfClientsConnected = 0;
String[] connectionIds = this.rmiConnector.getConnectionIds();
if (connectionIds != null) {
noOfClientsConnected = connectionIds.length;
}
logger.info("No. of RMI clients connected :: {}", noOfClientsConnected);
AdminDistributedSystemJmxImpl adminDSJmx = (AdminDistributedSystemJmxImpl) this.system;
adminDSJmx.setRmiClientCountZero(noOfClientsConnected == 0);
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("AgentImpl[");
sb.append("config=" + agentConfig.toProperties().toString());
// sb.append("; adaptor=" + httpAdaptor.toString());
sb.append("; mbeanName=" + mbeanName);
sb.append("; modelMBean=" + modelMBean);
sb.append("; objectName=" + objectName);
sb.append("; propertyFile=" + propertyFile);
sb.append(": rmiConnector=" + rmiConnector);
// sb.append("; system=" + system);)
sb.append("]");
return sb.toString();
}
/**
* Process the String form of a hostname to make it comply with Jmx URL restrictions. Namely wrap
* IPv6 literal address with "[", "]"
*
* @param hostname the name to safeguard.
* @return a string representation suitable for use in a Jmx connection URL
*/
private static String applyRFC2732(String hostname) {
if (hostname.indexOf(":") != -1) {
// Assuming an IPv6 literal because of the ':'
return "[" + hostname + "]";
}
return hostname;
}
}
/**
* Adapter class for NotificationListener that listens to notifications of type
* javax.management.remote.JMXConnectionNotification
*
* @since GemFire 6.0
*/
class ConnectionNotificationAdapter implements NotificationListener {
private static final Logger logger = LogService.getLogger();
/**
* If the handback object passed is an AgentImpl, updates the JMX client count
*
* @param notification JMXConnectionNotification for change in client connection status
* @param handback An opaque object which helps the listener to associate information regarding
* the MBean emitter. This object is passed to the MBean during the addListener call and
* resent, without modification, to the listener. The MBean object should not use or modify
* the object. (NOTE: copied from javax.management.NotificationListener)
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "BC_UNCONFIRMED_CAST",
justification = "Only JMXConnectionNotification instances are used.")
public void handleNotification(Notification notification, Object handback) {
if (handback instanceof AgentImpl) {
AgentImpl agent = (AgentImpl) handback;
JMXConnectionNotification jmxNotifn = (JMXConnectionNotification) notification;
if (logger.isDebugEnabled()) {
logger.debug("Connection notification for connection id : '{}'",
jmxNotifn.getConnectionId());
}
agent.updateRmiClientsCount();
}
}
}
/**
* Filters out the notifications of the type JMXConnectionNotification.OPENED,
* JMXConnectionNotification.CLOSED and JMXConnectionNotification.FAILED.
*
* @since GemFire 6.0
*/
class ConnectionNotificationFilterImpl implements NotificationFilter {
/**
* Default serialVersionUID
*/
private static final long serialVersionUID = 1L;
/**
* Invoked before sending the specified notification to the listener. Returns whether the given
* notification is to be sent to the listener.
*
* @param notification The notification to be sent.
* @return true if the notification has to be sent to the listener, false otherwise.
*/
public boolean isNotificationEnabled(Notification notification) {
boolean isThisNotificationEnabled = false;
if (notification.getType().equals(JMXConnectionNotification.OPENED)
|| notification.getType().equals(JMXConnectionNotification.CLOSED)
|| notification.getType().equals(JMXConnectionNotification.FAILED)) {
isThisNotificationEnabled = true;
}
return isThisNotificationEnabled;
}
}