com.devexperts.qd.qtp

Class QTPConstants

java.lang.Object

com.devexperts.qd.qtp.QTPConstants

public class QTPConstants
extends Object

This class contains key buffer and connection constants that affect performance of QTP.

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMPOSER_BUFFER_SIZE Defines default size of the composer buffer that is kept in each composer instance.
static int	COMPOSER_THRESHOLD Defines default threshold for the size of the composed packet.
static LocalTime	CONNECTION_RESTORE_TIME Defines the connection recovery time for all client socket connections.
static long	GRACEFUL_DELAY Defines the graceful delay for different socket activities
static int	MAX_MESSAGE_SIZE Defines the hard upper limit for packet size in QTP transfers.
static int	READ_AGGREGATION_SIZE Maximum number of bytes to aggregate before processing when reading data from socket.
static long	RECONNECT_DELAY Default reconnection delay in QTP.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

RECONNECT_DELAY

public static final long RECONNECT_DELAY

Default reconnection delay in QTP. Note, that this default affects all connector and it can be set on per-connector basis (JMX or config line) with "reconnectDelay" property in connector.

READ_AGGREGATION_SIZE

public static final int READ_AGGREGATION_SIZE

Maximum number of bytes to aggregate before processing when reading data from socket. If fewer number of bytes received and no more are available in socket then parsing starts immediately (no additional delay), but when data is coming into a socket continuously, then it is read from socket in chunks of a specific chunk size of a default chunk pool (it can be configured via JVM system property "com.devexperts.io.chunkSize" with a default value of 8192), and parsing starts as soon as total number of bytes read exceeds this aggregation size.

COMPOSER_THRESHOLD

public static final int COMPOSER_THRESHOLD

Defines default threshold for the size of the composed packet. When packet size exceeds this threshold, then the packet is finished and becomes available for sending. Thus, actual packets can exceed this threshold up to the size of one record, which can be quite big if symbols are long or record data contains large object values.

COMPOSER_BUFFER_SIZE

public static final int COMPOSER_BUFFER_SIZE

Defines default size of the composer buffer that is kept in each composer instance. Its default value is 50% larger than the threshold. If composed packet exceeds the size of the buffer, then larger buffer is allocated and becomes garbage when the message is sent.

MAX_MESSAGE_SIZE

public static final int MAX_MESSAGE_SIZE

Defines the hard upper limit for packet size in QTP transfers. A packet of greater size will be considered corrupted by the QTP parser and rejected without further analysis. The value shall be big enough to accept any valid QTP packet.

CONNECTION_RESTORE_TIME

public static final LocalTime CONNECTION_RESTORE_TIME

Defines the connection recovery time for all client socket connections. This can be overridden in the connection string by means of 'restoreTime' property

GRACEFUL_DELAY

public static final long GRACEFUL_DELAY

Defines the graceful delay for different socket activities