com.sun.jts.CosTransactions

Class AdminUtil

java.lang.Object

com.sun.jts.CosTransactions.AdminUtil

public class AdminUtil
extends Object

AdminUtil - Utility class for monitoring and administering jts. This class is used by admin utilities for performing monitoring and administration.

Version:

1.0

Author:

Ajay Kumar

Constructor Summary

Constructors

Constructor and Description
AdminUtil()

Method Summary

Modifier and Type	Method and Description
static void	freezeAll() freezeAll Freeze all transactional activity.
static long	getAbortedTransactionCount() Return the count of rolledback transactions.
static long	getActiveTransactionCount() Return the number of transactions that are active currently.
static Enumeration	getAllTIDs() Returned enumeration of globaltids of existing transactions.
static Collection	getAllTransactions() Returns the collection of existing coordinators.
static long	getCommitedTransactionCount() Return the committed transactions count.
static long	getPendingTransactionCount() Return the count of transactions that are prepared - but not completed.
static long	getRecoveryAbortedTransactionCount() Return the number of transactions that were rolled back as part of the recovery process.
static long	getRecoveryCommitedTransactionCount() Return the count of transactions that were commited as part of the recovery process.
static long	getSamplingDuration() Returns the duration for which the last sampling window was open, in milliseconds.
static long	getSamplingEndTime() Returns the time in millisecond , since the begining of time, when the sampling window was closed.
static long	getSamplingStartTime() Returns the time in milliseconds, since the begining of time, when the sampling window was started.
static void	incrementRecoveryAbortedTransactionCount() Increments the number of transactions that were rolled back as part of the recovery process.
static void	incrementRecoveryCommitedTransactionCount() Increments the number of transactions that were commited as part of the recovery process.
static boolean	isFrozenAll() isFrozenAll Get the current state.
static void	startSampling() startSampling Start the sampling window.
static void	stopSampling() stopSampling Stop sampling the statitics values.
static void	unfreezeAll() unfreezeAll Unfreeze all transactional activity frozen by a freezeAll call.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AdminUtil

public AdminUtil()

Method Detail

freezeAll

public static void freezeAll()

freezeAll Freeze all transactional activity. Part of freezing functions that will be used to achive a transactional quiet period before taking any action or collecting any statistics. This call returns when all the activities are frozen. All the states would be allowed to complete before freezing on. For example a transaction in preparing state would be allowed to transition to next state - the prepared state.

unfreezeAll

public static void unfreezeAll()

unfreezeAll Unfreeze all transactional activity frozen by a freezeAll call. Part of freezing functions that will be used to achive a transactional quiet period before taking any action or collecting any statistics. This call returns almost immediately.

isFrozenAll

public static boolean isFrozenAll()

isFrozenAll Get the current state. Part of freezing functions that will be used to achive a transactional quiet period before taking any action or collecting any statistics. This call returns almost immediately.

startSampling

public static void startSampling()

startSampling Start the sampling window. The sample window determines the duration in which the data is collected. Start and stop calls demarcate the the window. The sampling data could be number of transactions committed ,rolledback etc and transient data like pending etc. It also resets various counters.

See Also:

stopSampling

stopSampling

public static void stopSampling()

stopSampling Stop sampling the statitics values. This is used to indicate end of sampling window.

See Also:

startSampling

incrementRecoveryCommitedTransactionCount

public static void incrementRecoveryCommitedTransactionCount()

Increments the number of transactions that were commited as part of the recovery process.

incrementRecoveryAbortedTransactionCount

public static void incrementRecoveryAbortedTransactionCount()

Increments the number of transactions that were rolled back as part of the recovery process.

getCommitedTransactionCount

public static long getCommitedTransactionCount()

Return the committed transactions count.

getAbortedTransactionCount

public static long getAbortedTransactionCount()

Return the count of rolledback transactions.

getActiveTransactionCount

public static long getActiveTransactionCount()

Return the number of transactions that are active currently.

getPendingTransactionCount

public static long getPendingTransactionCount()

Return the count of transactions that are prepared - but not completed. This includes the total transactions that ever entered into prepared state minus ones which got committed, rolledback, taking care of ones that were rolledback without entering prepared state.

getRecoveryCommitedTransactionCount

public static long getRecoveryCommitedTransactionCount()

Return the count of transactions that were commited as part of the recovery process.

getRecoveryAbortedTransactionCount

public static long getRecoveryAbortedTransactionCount()

Return the number of transactions that were rolled back as part of the recovery process.

getSamplingStartTime

public static long getSamplingStartTime()

Returns the time in milliseconds, since the begining of time, when the sampling window was started.

getSamplingEndTime

public static long getSamplingEndTime()

Returns the time in millisecond , since the begining of time, when the sampling window was closed.

getSamplingDuration

public static long getSamplingDuration()

Returns the duration for which the last sampling window was open, in milliseconds. If the sampling window is still open, then the running duration is returned.

getAllTransactions

public static Collection getAllTransactions()

Returns the collection of existing coordinators.

getAllTIDs

public static Enumeration getAllTIDs()

Returned enumeration of globaltids of existing transactions.