/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2015-2016 ForgeRock AS.
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*/
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package org.opends.server.tasks;
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import org.forgerock.i18n.LocalizableMessage;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.ldap.schema.AttributeType;
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import org.opends.server.backends.task.Task;
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import org.opends.server.backends.task.TaskState;
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import org.opends.server.replication.common.CSN;
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import org.opends.server.replication.server.ReplicationServer;
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import org.opends.server.replication.server.changelog.api.ChangelogException;
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import org.opends.server.types.Attribute;
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import org.forgerock.opendj.ldap.DN;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.Entry;
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import java.util.List;
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import static org.forgerock.opendj.ldap.ResultCode.*;
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import static org.opends.server.config.ConfigConstants.ATTR_TASK_RESET_CHANGE_NUMBER_BASE_DN;
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import static org.opends.server.config.ConfigConstants.ATTR_TASK_RESET_CHANGE_NUMBER_CSN;
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import static org.opends.server.config.ConfigConstants.ATTR_TASK_RESET_CHANGE_NUMBER_TO;
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import static org.opends.server.core.DirectoryServer.getAttributeType;
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import static org.opends.messages.TaskMessages.*;
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/**
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* This class provides an implementation of a Directory Server task that can
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* be used to rebuild the change number index with a given change number and a
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* change represented by its CSN.
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*/
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public class ResetChangeNumberTask extends Task
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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private int newFirstChangeNumber;
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private DN baseDN;
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private CSN newFirstCSN;
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private ReplicationServer targetRS;
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@Override
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public LocalizableMessage getDisplayName() {
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return INFO_TASK_RESET_CHANGE_NUMBER.get();
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}
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@Override public void initializeTask() throws DirectoryException
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{
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if (TaskState.isDone(getTaskState()))
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{
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return;
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}
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final Entry taskEntry = getTaskEntry();
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newFirstChangeNumber = TaskUtils.getSingleValueInteger(
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getTaskParameter(taskEntry, ATTR_TASK_RESET_CHANGE_NUMBER_TO), 1);
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newFirstCSN = CSN.valueOf(TaskUtils.getSingleValueString(
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getTaskParameter(taskEntry, ATTR_TASK_RESET_CHANGE_NUMBER_CSN)));
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baseDN = DN.valueOf(TaskUtils.getSingleValueString(
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getTaskParameter(taskEntry, ATTR_TASK_RESET_CHANGE_NUMBER_BASE_DN)));
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if (newFirstChangeNumber < 1)
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{
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throw new DirectoryException(UNWILLING_TO_PERFORM,
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ERR_TASK_RESET_CHANGE_NUMBER_INVALID.get(newFirstChangeNumber));
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}
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List<ReplicationServer> allRSes = ReplicationServer.getAllInstances();
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if (allRSes.isEmpty())
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{
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throw new DirectoryException(NO_SUCH_OBJECT, ERR_TASK_RESET_CHANGE_NUMBER_NO_RSES.get());
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}
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for (ReplicationServer rs : allRSes)
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{
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if (rs.getReplicationServerDomain(baseDN) != null)
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{
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targetRS = rs;
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return;
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}
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}
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throw new DirectoryException(NO_SUCH_OBJECT, ERR_TASK_RESET_CHANGE_NUMBER_CHANGELOG_NOT_FOUND.get(baseDN));
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}
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private List<Attribute> getTaskParameter(Entry taskEntry, String attrTaskResetChangeNumberTo)
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{
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AttributeType taskAttr = getAttributeType(attrTaskResetChangeNumberTo);
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return taskEntry.getAttribute(taskAttr);
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}
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@Override
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protected TaskState runTask()
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{
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logger.trace("Reset change number task is starting with new changeNumber %d having CSN %s",
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newFirstChangeNumber, newFirstCSN);
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try
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{
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targetRS.getChangelogDB().getChangeNumberIndexDB().resetChangeNumberTo(newFirstChangeNumber, baseDN, newFirstCSN);
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return returnWithDebug(TaskState.COMPLETED_SUCCESSFULLY);
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}
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catch (ChangelogException ce)
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{
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logger.error(ERR_TASK_RESET_CHANGE_NUMBER_FAILED, ce.getMessageObject());
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return returnWithDebug(TaskState.STOPPED_BY_ERROR);
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}
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}
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private TaskState returnWithDebug(TaskState state)
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{
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logger.trace("state: %s", state);
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return state;
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}
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}
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