Package com.epam.reportportal.service.launch.lock

Class LaunchIdLockFile

java.lang.Object

com.epam.reportportal.service.launch.lock.AbstractLaunchIdLock

com.epam.reportportal.service.launch.lock.LaunchIdLockFile

All Implemented Interfaces:

LaunchIdLock

public class LaunchIdLockFile
extends AbstractLaunchIdLock

A service to perform blocking I/O operations on '.lock' and '.sync' file to get single launch UUID for multiple clients on a machine. This class uses a local storage disk, therefore applicable in scope of a single hardware machine. You can control lock and sync file paths with ListenerProperty.FILE_LOCK_NAME and ListenerProperty.FILE_SYNC_NAME properties.

Field Summary

Fields

Modifier and Type	Field	Description
static java.nio.charset.Charset	LOCK_FILE_CHARSET
static java.lang.String	TIME_SEPARATOR

Fields inherited from class com.epam.reportportal.service.launch.lock.AbstractLaunchIdLock

parameters

Fields inherited from interface com.epam.reportportal.service.LaunchIdLock

MAX_WAIT_TIME_DISCREPANCY

Constructor Summary

Constructors

Constructor	Description
LaunchIdLockFile(ListenerParameters listenerParameters)

Method Summary

Modifier and Type	Method	Description
void	finishInstanceUuid(java.lang.String instanceUuid)	Remove self UUID from sync file, means that a client finished its Launch.
java.util.Collection<java.lang.String>	getLiveInstanceUuids()	Return all instance UUIDs which are still running.
java.lang.String	obtainLaunchUuid(java.lang.String instanceUuid)	Returns a Launch UUID for many Clients launched on one machine.
void	updateInstanceUuid(java.lang.String instanceUuid)	Update timestamp for instance record in sync file.

Methods inherited from class java.lang.Object

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

Field Detail

LOCK_FILE_CHARSET

public static final java.nio.charset.Charset LOCK_FILE_CHARSET

TIME_SEPARATOR

public static final java.lang.String TIME_SEPARATOR

See Also:

Constant Field Values

Constructor Detail

LaunchIdLockFile

public LaunchIdLockFile(@Nonnull
                        ListenerParameters listenerParameters)

Method Detail

obtainLaunchUuid

@Nullable
public java.lang.String obtainLaunchUuid(@Nonnull
                                         java.lang.String instanceUuid)

Returns a Launch UUID for many Clients launched on one machine.

Parameters:

instanceUuid - a Client instance UUID, which will be written to lock and sync files and, if it is the first thread which managed to obtain lock on '.lock' file, returned to every client instance.

Returns:

either a Client instance UUID, either the first UUID which thread managed to place a lock on a '.lock' file.

updateInstanceUuid

public void updateInstanceUuid(@Nonnull
                               java.lang.String instanceUuid)

Update timestamp for instance record in sync file.

Parameters:

instanceUuid - instanceUuid a Client instance UUID

finishInstanceUuid

public void finishInstanceUuid(@Nonnull
                               java.lang.String instanceUuid)

Remove self UUID from sync file, means that a client finished its Launch. If this is the last UUID in the sync file, lock and sync files will be removed.

Parameters:

instanceUuid - a Client instance UUID.

getLiveInstanceUuids

@Nonnull
public java.util.Collection<java.lang.String> getLiveInstanceUuids()

Description copied from interface: LaunchIdLock

Return all instance UUIDs which are still running.

Returns:

a collection of live instance UUIDs