org.fcrepo.server.journal.readerwriter.multifile
Class MultiFileJournalWriter

java.lang.Object
  org.fcrepo.server.journal.xmlhelpers.AbstractXmlWriter
      org.fcrepo.server.journal.JournalWriter
          org.fcrepo.server.journal.readerwriter.multifile.MultiFileJournalWriter

All Implemented Interfaces:

JournalConstants, MultiFileJournalConstants

public class MultiFileJournalWriter
extends JournalWriter
implements MultiFileJournalConstants

An implementation of JournalWriter that writes a series of Journal files to a specified directory. New files are begun when the current file becomes too large or too old.

Author:

Jim Blake

Field Summary

Fields inherited from class org.fcrepo.server.journal.JournalWriter

parameters, role, server, SYNCHRONIZER

Fields inherited from interface org.fcrepo.server.journal.readerwriter.multifile.MultiFileJournalConstants

DEFAULT_FOLLOW_POLLING_INTERVAL, PARAMETER_ARCHIVE_DIRECTORY, PARAMETER_FOLLOW_POLLING_INTERVAL, PARAMETER_JOURNAL_DIRECTORY, PARAMETER_LOCK_ACCEPTED_FILENAME, PARAMETER_LOCK_REQUESTED_FILENAME, PARAMETER_PAUSE_BEFORE_POLLING

Fields inherited from interface org.fcrepo.server.journal.JournalConstants

ARGUMENT_NAME_ALT_IDS, ARGUMENT_NAME_CHECKSUM, ARGUMENT_NAME_CHECKSUM_TYPE, ARGUMENT_NAME_CONTEXT, ARGUMENT_NAME_CONTROL_GROUP, ARGUMENT_NAME_DATATYPE, ARGUMENT_NAME_DISSEMINATOR_ID, ARGUMENT_NAME_DISSEMINATOR_LABEL, ARGUMENT_NAME_DISSEMINATOR_STATE, ARGUMENT_NAME_DS_CONTENT, ARGUMENT_NAME_DS_ID, ARGUMENT_NAME_DS_LABEL, ARGUMENT_NAME_DS_LOCATION, ARGUMENT_NAME_DS_STATE, ARGUMENT_NAME_ENCODING, ARGUMENT_NAME_END_DATE, ARGUMENT_NAME_FORCE, ARGUMENT_NAME_FORMAT, ARGUMENT_NAME_FORMAT_URI, ARGUMENT_NAME_IN, ARGUMENT_NAME_IS_LITERAL, ARGUMENT_NAME_LABEL, ARGUMENT_NAME_LAST_MODIFIED_DATE, ARGUMENT_NAME_LOCATION, ARGUMENT_NAME_LOG_MESSAGE, ARGUMENT_NAME_MIME_TYPE, ARGUMENT_NAME_NAMESPACE, ARGUMENT_NAME_NEW_PID, ARGUMENT_NAME_NUM_PIDS, ARGUMENT_NAME_OBJECT, ARGUMENT_NAME_OWNERID, ARGUMENT_NAME_PID, ARGUMENT_NAME_RELATIONSHIP, ARGUMENT_NAME_SERIALIZATION, ARGUMENT_NAME_START_DATE, ARGUMENT_NAME_STATE, ARGUMENT_NAME_VERSION_DATE, ARGUMENT_NAME_VERSIONABLE, ARGUMENT_TYPE_BINDING_MAP, ARGUMENT_TYPE_BOOLEAN, ARGUMENT_TYPE_DATE, ARGUMENT_TYPE_INTEGER, ARGUMENT_TYPE_NULL, ARGUMENT_TYPE_STREAM, ARGUMENT_TYPE_STRING, ARGUMENT_TYPE_STRINGARRAY, CONTEXT_MAPNAME_ACTION, CONTEXT_MAPNAME_ENVIRONMENT, CONTEXT_MAPNAME_RECOVERY, CONTEXT_MAPNAME_RESOURCE, CONTEXT_MAPNAME_SUBJECT, DEFAULT_AGE_LIMIT, DEFAULT_FILENAME_PREFIX, DEFAULT_SIZE_LIMIT, DOCUMENT_ENCODING, DOCUMENT_VERSION, FORMAT_JOURNAL_FILENAME_TIMESTAMP, METHOD_ADD_DATASTREAM, METHOD_ADD_DISSEMINATOR, METHOD_ADD_RELATIONSHIP, METHOD_GET_NEXT_PID, METHOD_INGEST, METHOD_MODIFY_DATASTREAM_BY_REFERENCE, METHOD_MODIFY_DATASTREAM_BY_VALUE, METHOD_MODIFY_DISSEMINATOR, METHOD_MODIFY_OBJECT, METHOD_PURGE_DATASTREAM, METHOD_PURGE_DISSEMINATOR, METHOD_PURGE_OBJECT, METHOD_PURGE_RELATIONSHIP, METHOD_PUT_TEMP_STREAM, METHOD_SET_DATASTREAM_STATE, METHOD_SET_DATASTREAM_VERSIONABLE, METHOD_SET_DISSEMINATOR_STATE, PARAMETER_IGNORE_HASH, PARAMETER_JOURNAL_FILE_AGE_LIMIT, PARAMETER_JOURNAL_FILE_SIZE_LIMIT, PARAMETER_JOURNAL_FILENAME_PREFIX, PARAMETER_JOURNAL_MODE, PARAMETER_JOURNAL_READER_CLASSNAME, PARAMETER_JOURNAL_RECOVERY_LOG_CLASSNAME, PARAMETER_JOURNAL_WRITER_CLASSNAME, PARAMETER_RECOVERY_LOG_FILENAME, PARAMETER_RECOVERY_LOG_LEVEL, PASSWORD_CIPHER_TYPE, QNAME_ATTR_BIND_KEY_NAME, QNAME_ATTR_BIND_LABEL, QNAME_ATTR_CLIENT_IP, QNAME_ATTR_DATASTREAM_ID, QNAME_ATTR_DS_BIND_MAP_ID, QNAME_ATTR_DS_BIND_MAP_LABEL, QNAME_ATTR_DS_BIND_MECHANISM_PID, QNAME_ATTR_LOGIN_ID, QNAME_ATTR_METHOD, QNAME_ATTR_NAME, QNAME_ATTR_PASSWORD_TYPE, QNAME_ATTR_REPOSITORY_HASH, QNAME_ATTR_SEQ_NO, QNAME_ATTR_STATE, QNAME_ATTR_TIMESTAMP, QNAME_ATTR_TYPE, QNAME_ATTR_USERID, QNAME_TAG_ARGUMENT, QNAME_TAG_ARRAYELEMENT, QNAME_TAG_CONTEXT, QNAME_TAG_DS_BINDING, QNAME_TAG_DS_BINDING_MAP, QNAME_TAG_JOURNAL, QNAME_TAG_JOURNAL_ENTRY, QNAME_TAG_MULTI_VALUE_MAP, QNAME_TAG_MULTI_VALUE_MAP_KEY, QNAME_TAG_MULTI_VALUE_MAP_VALUE, QNAME_TAG_NOOP, QNAME_TAG_NOW, QNAME_TAG_PASSWORD, SYSTEM_PROPERTY_PREFIX, TIMESTAMP_FORMAT, VALUE_FALSE, VALUE_JOURNAL_MODE_NORMAL, VALUE_JOURNAL_MODE_RECOVER, VALUE_RECOVERY_LOG_LEVEL_HIGH, VALUE_RECOVERY_LOG_LEVEL_LOW, VALUE_RECOVERY_LOG_LEVEL_MEDIUM, VALUE_TRUE

Constructor Summary

MultiFileJournalWriter(Map<String,String> parameters, String role, ServerInterface server)
Parse the parameters to find out how we are operating.

Method Summary

void	prepareToWriteJournalEntry() Before writing an entry, check to see whether we need to close the current file and/or open a new one.
void	shutdown() Close the current journal file.
String	toString() Create an informative message for debugging purposes.
void	writeJournalEntry(CreatorJournalEntry journalEntry) We've prepared for the entry, so just write it, but remember to synchronize on the file, so we don't get an asynchronous close while we're writing.

Methods inherited from class org.fcrepo.server.journal.JournalWriter

getInstance, writeDocumentHeader, writeDocumentHeader, writeDocumentTrailer, writeJournalEntry

Methods inherited from class org.fcrepo.server.journal.xmlhelpers.AbstractXmlWriter

putAttribute, putAttributeIfNotNull, putCharacters, putEndDocument, putEndTag, putStartDocument, putStartTag

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiFileJournalWriter

public MultiFileJournalWriter(Map<String,String> parameters,
                              String role,
                              ServerInterface server)
                       throws JournalException

Parse the parameters to find out how we are operating.

Throws:

JournalException

Method Detail

prepareToWriteJournalEntry

public void prepareToWriteJournalEntry()
                                throws JournalException

Before writing an entry, check to see whether we need to close the current file and/or open a new one.

Specified by:

prepareToWriteJournalEntry in class JournalWriter

Throws:

JournalException

writeJournalEntry

public void writeJournalEntry(CreatorJournalEntry journalEntry)
                       throws JournalException

We've prepared for the entry, so just write it, but remember to synchronize on the file, so we don't get an asynchronous close while we're writing. After writing the entry, flush the file.

Specified by:

writeJournalEntry in class JournalWriter

Throws:

JournalException

shutdown

public void shutdown()
              throws JournalException

Close the current journal file.

Specified by:

shutdown in class JournalWriter

Throws:

JournalException

toString

public String toString()

Create an informative message for debugging purposes.

Overrides:

toString in class Object