com.sleepycat.je.rep.stream

Class OutputWireRecord

java.lang.Object

com.sleepycat.je.rep.stream.OutputWireRecord

public class OutputWireRecord
extends Object

Format for log entries sent across the wire for replication. In most cases, the bytes are read directly from the log and never need to be serialized into the backing object. Note that the ByteBuffer held within the OutputWireRecord has a limited lifetime. Often it's just sliced, rather than copied from the underlying buffer.

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteBuffer	entryBuffer
protected EnvironmentImpl	envImpl

Method Summary

Modifier and Type	Method and Description
String	dump() Dump the contents.
long	getCommitTimeStamp() Returns the timestamp associated with a commit log entry, or 0.
long	getCommitTxnId()
byte	getEntryType()
DatabaseId	getReplicableDBId() Returns the ID of the database containing the associated entry if it is a replicable entry.
long	getTimeStamp()
VLSN	getVLSN()
ReplicableLogEntry	instantiateEntry() Returns a log entry corresponding to the entry buffer.
boolean	match(InputWireRecord input) Used at syncup, when comparing records received from the feeder against local records.
boolean	match(OutputWireRecord otherRecord) For unit tests.
String	toString()
boolean	verifyNegativeSequences(String debugTag)

Methods inherited from class java.lang.Object

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

Field Detail

entryBuffer

protected final ByteBuffer entryBuffer

envImpl

protected final EnvironmentImpl envImpl

Method Detail

instantiateEntry

public ReplicableLogEntry instantiateEntry()
                                    throws DatabaseException

Returns a log entry corresponding to the entry buffer. Note that the log entry will only be created once, at most. When a LogItem from the LogItemCache was used to construct this record, we cache the materialized entry in LogItem to try to avoid redundant materialization in multiple feeders.

Throws:

DatabaseException

getEntryType

public byte getEntryType()

Returns:

the log entry type for this record.

match

public boolean match(InputWireRecord input)
              throws DatabaseException

Used at syncup, when comparing records received from the feeder against local records.

Returns:

true if this OutputWireRecord has the same logical contents as the InputWireRecord. The comparison will disregard portions of the logEntry that may be different, such at timestamps on a Commit entry. Must be called before the entryBuffer that backs this OutputWireRecord is reused.

Throws:

DatabaseException

match

public boolean match(OutputWireRecord otherRecord)
              throws DatabaseException

For unit tests.

Returns:

true if this OutputWireRecord has the same logical contents as "other".

Throws:

DatabaseException

getVLSN

public VLSN getVLSN()

dump

public String dump()
            throws DatabaseException

Dump the contents.

Throws:

DatabaseException

toString

public String toString()

Overrides:

toString in class Object

getCommitTxnId

public long getCommitTxnId()
                    throws DatabaseException

Throws:

DatabaseException

getCommitTimeStamp

public long getCommitTimeStamp()
                        throws DatabaseException

Returns the timestamp associated with a commit log entry, or 0.

Returns:

the commit timestamp or 0

Throws:

DatabaseException

getTimeStamp

public long getTimeStamp()
                  throws DatabaseException

Throws:

DatabaseException

getReplicableDBId

public DatabaseId getReplicableDBId()
                             throws DatabaseException

Returns the ID of the database containing the associated entry if it is a replicable entry. Returns null for non-replicable entries and for entries not associated with a database.

Returns:

the database ID or null

Throws:

DatabaseException

verifyNegativeSequences

public boolean verifyNegativeSequences(String debugTag)