org.owasp.dependencycheck.utils

Class H2DBLock

java.lang.Object

org.owasp.dependencycheck.utils.H2DBLock

@NotThreadSafe
public class H2DBLock
extends Object

The H2 DB lock file implementation; creates a custom lock file so that only a single instance of dependency-check can update the embedded h2 database.

Author:

Jeremy Long

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_SLEEP_COUNT Max attempts to obtain a lock.
static int	SLEEP_DURATION How long to sleep waiting for the lock.

Constructor Summary

Constructors

Constructor and Description
H2DBLock(Settings settings) Constructs a new H2DB Lock object with the configured settings.

Method Summary

Modifier and Type	Method and Description
boolean	isLocked() Determine if the lock is currently held.
void	lock() Obtains a lock on the H2 database.
void	release() Releases the lock on the H2 database.

Methods inherited from class java.lang.Object

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

Field Detail

SLEEP_DURATION

public static final int SLEEP_DURATION

How long to sleep waiting for the lock.

See Also:

Constant Field Values

MAX_SLEEP_COUNT

public static final int MAX_SLEEP_COUNT

Max attempts to obtain a lock.

See Also:

Constant Field Values

Constructor Detail

H2DBLock

public H2DBLock(Settings settings)

Constructs a new H2DB Lock object with the configured settings.

Parameters:

settings - the configured settings

Method Detail

isLocked

public boolean isLocked()

Determine if the lock is currently held.

Returns:

true if the lock is currently held

lock

public void lock()
          throws H2DBLockException

Obtains a lock on the H2 database.

Throws:

H2DBLockException - thrown if a lock could not be obtained

release

public void release()

Releases the lock on the H2 database.