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/*
* Copyright (c) 2021 Contributors to the Eclipse Foundation
* Copyright (c) 2009, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.enterprise.transaction.monitoring;
import java.util.List;
import java.util.logging.Logger;
import org.glassfish.external.probe.provider.annotations.ProbeListener;
import org.glassfish.external.probe.provider.annotations.ProbeParam;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.StringStatistic;
import org.glassfish.external.statistics.impl.CountStatisticImpl;
import org.glassfish.external.statistics.impl.StringStatisticImpl;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.enterprise.transaction.api.TransactionAdminBean;
/**
* Collects the Transaction Service monitoring data and provides it to the callers.
*
* @author Marina Vatkina
*/
@AMXMetadata(type = "transaction-service-mon", group = "monitoring")
@ManagedObject
@Description("Transaction Service Statistics")
public class TransactionServiceStatsProvider {
private static final int COLUMN_LENGTH = 25;
private static final String LINE_BREAK = "%%%EOL%%%";
private CountStatisticImpl activeCount = new CountStatisticImpl("ActiveCount", "count",
"Provides the number of transactions that are currently active.");
private CountStatisticImpl committedCount = new CountStatisticImpl("CommittedCount", "count",
"Provides the number of transactions that have been committed.");
private CountStatisticImpl rolledbackCount = new CountStatisticImpl("RolledbackCount", "count",
"Provides the number of transactions that have been rolled back.");
private StringStatisticImpl inflightTransactions = new StringStatisticImpl("ActiveIds", "List",
"Provides the IDs of the transactions that are currently active a.k.a. in-flight "
+ "transactions. Every such transaction can be rolled back after freezing the transaction " + "service.");
private StringStatisticImpl state = new StringStatisticImpl("State", "String", "Indicates if the transaction service has been frozen.");
private boolean isFrozen = false;
private JavaEETransactionManager txMgr;
private Logger _logger;
public TransactionServiceStatsProvider(JavaEETransactionManager tm, Logger l) {
txMgr = tm;
_logger = l;
}
@ManagedAttribute(id = "activecount")
@Description("Provides the number of transactions that are currently active.")
public CountStatistic getActiveCount() {
return activeCount;
}
@ManagedAttribute(id = "committedcount")
@Description("Provides the number of transactions that have been committed.")
public CountStatistic getCommittedCount() {
return committedCount;
}
@ManagedAttribute(id = "rolledbackcount")
@Description("Provides the number of transactions that have been rolled back.")
public CountStatistic getRolledbackCount() {
return rolledbackCount;
}
@ManagedAttribute(id = "state")
@Description("Indicates if the transaction service has been frozen.")
public StringStatistic getState() {
state.setCurrent((isFrozen) ? "True" : "False");
return state;
}
@ManagedAttribute(id = "activeids")
@Description("List of inflight transactions.")
public StringStatistic getActiveIds() {
if (txMgr == null) {
_logger.warning("transaction.monitor.tm_null");
inflightTransactions.setCurrent("");
return inflightTransactions;
}
List aList = txMgr.getActiveTransactions();
StringBuffer strBuf = new StringBuffer(1024);
if (!aList.isEmpty()) {
// Set the headings for the tabular output
int componentNameLength = COLUMN_LENGTH;
int txIdLength = COLUMN_LENGTH + 15;
for (int i = 0; i < aList.size(); i++) {
TransactionAdminBean txnBean = (TransactionAdminBean) aList.get(i);
String componentName = txnBean.getComponentName();
if (componentName.length() > componentNameLength) {
componentNameLength = componentName.length() + 1;
}
String txnId = txnBean.getId();
if (txnId.length() > txIdLength) {
txIdLength = txnId.length() + 1;
}
}
if (aList.size() > 0) {
strBuf.append(LINE_BREAK).append(LINE_BREAK);
appendColumn(strBuf, "Transaction Id", txIdLength);
appendColumn(strBuf, "Status", COLUMN_LENGTH);
appendColumn(strBuf, "ElapsedTime(ms)", COLUMN_LENGTH);
appendColumn(strBuf, "ComponentName", componentNameLength);
strBuf.append("ResourceNames ").append(LINE_BREAK);
}
for (int i = 0; i < aList.size(); i++) {
TransactionAdminBean txnBean = (TransactionAdminBean) aList.get(i);
String txnId = txnBean.getId();
_logger.fine("=== Processing txnId: " + txnId);
appendColumn(strBuf, txnId, txIdLength);
appendColumn(strBuf, txnBean.getStatus(), COLUMN_LENGTH);
appendColumn(strBuf, String.valueOf(txnBean.getElapsedTime()), COLUMN_LENGTH);
appendColumn(strBuf, txnBean.getComponentName(), componentNameLength);
List resourceList = txnBean.getResourceNames();
if (resourceList != null) {
for (int k = 0; k < resourceList.size(); k++) {
if (k != 0)
strBuf.append(",");
strBuf.append(resourceList.get(k));
}
}
strBuf.append(LINE_BREAK);
}
}
_logger.fine("Prepared inflightTransactions text: \n" + strBuf);
inflightTransactions.setCurrent(strBuf.toString());
return inflightTransactions;
}
@ProbeListener("glassfish:transaction:transaction-service:activated")
public void transactionActivatedEvent() {
_logger.fine("=== transaction-service active ++");
activeCount.increment();
}
@ProbeListener("glassfish:transaction:transaction-service:deactivated")
public void transactionDeactivatedEvent() {
_logger.fine("=== transaction-service active --");
activeCount.decrement();
}
@ProbeListener("glassfish:transaction:transaction-service:committed")
public void transactionCommittedEvent() {
_logger.fine("=== transaction-service committed ++");
committedCount.increment();
activeCount.decrement();
}
@ProbeListener("glassfish:transaction:transaction-service:rolledback")
public void transactionRolledbackEvent() {
_logger.fine("=== transaction-service rolledback ++");
rolledbackCount.increment();
activeCount.decrement();
}
@ProbeListener("glassfish:transaction:transaction-service:freeze")
public void freezeEvent(@ProbeParam("isFrozen") boolean b) {
isFrozen = b;
}
private void appendColumn(StringBuffer buf, String text, int length) {
buf.append(text);
for (int i = text.length(); i < length; i++) {
buf.append(" ");
}
}
}
