/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.tools.tasks;
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import org.opends.server.util.args.LDAPConnectionArgumentParser;
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import org.opends.server.util.args.ArgumentException;
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import org.opends.server.util.args.StringArgument;
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import org.opends.server.util.args.ArgumentGroup;
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import static org.opends.server.util.StaticUtils.wrapText;
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import static org.opends.server.util.StaticUtils.getExceptionMessage;
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import static org.opends.server.util.ServerConstants.MAX_LINE_WIDTH;
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import org.opends.server.util.StaticUtils;
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import org.opends.server.protocols.asn1.ASN1Exception;
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import org.opends.server.tools.LDAPConnection;
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import org.opends.server.tools.LDAPConnectionException;
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import static org.opends.server.tools.ToolConstants.*;
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import org.opends.server.types.LDAPException;
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import org.opends.server.types.OpenDsException;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.backends.task.TaskState;
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import org.opends.messages.Message;
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import static org.opends.messages.ToolMessages.*;
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import java.io.PrintStream;
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import java.text.ParseException;
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import java.util.Date;
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import java.util.Set;
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import java.util.HashSet;
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import java.util.List;
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import java.io.IOException;
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/**
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* Base class for tools that are capable of operating either by running
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* local within this JVM or by scheduling a task to perform the same
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* action running within the directory server through the tasks interface.
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*/
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public abstract class TaskTool implements TaskScheduleInformation {
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/**
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* Magic value used to indicate that the user would like to schedule
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* this operation to run immediately as a task as opposed to running
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* the operation in the local VM.
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*/
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public static final String NOW = "0";
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// Number of milliseconds this utility will wait before reloading
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// this task's entry in the directory while it is polling for status
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private static final int SYNCHRONOUS_TASK_POLL_INTERVAL = 1000;
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LDAPConnectionArgumentParser argParser;
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// Argument for describing the task's start time
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StringArgument startArg;
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/**
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* Called when this utility should perform its actions locally in this
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* JVM.
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*
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* @param initializeServer indicates whether or not to initialize the
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* directory server in the case of a local action
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* @param out stream to write messages; may be null
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* @param err stream to write messages; may be null
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* @return int indicating the result of this action
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*/
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abstract protected int processLocal(boolean initializeServer,
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PrintStream out,
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PrintStream err);
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/**
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* Creates an argument parser prepopulated with arguments for processing
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* input for scheduling tasks with the task backend.
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*
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* @param className of this tool
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* @param toolDescription of this tool
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* @return LDAPConnectionArgumentParser for processing CLI input
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*/
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protected LDAPConnectionArgumentParser createArgParser(String className,
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Message toolDescription)
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{
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ArgumentGroup ldapGroup = new ArgumentGroup(
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INFO_DESCRIPTION_TASK_LDAP_ARGS.get(), 1001);
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argParser = new LDAPConnectionArgumentParser(className,
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toolDescription, false, ldapGroup);
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ArgumentGroup taskGroup = new ArgumentGroup(
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INFO_DESCRIPTION_TASK_TASK_ARGS.get(), 1000);
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try {
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startArg = new StringArgument(
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OPTION_LONG_START_DATETIME,
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OPTION_SHORT_START_DATETIME,
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OPTION_LONG_START_DATETIME, false, false,
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true, OPTION_VALUE_START_DATETIME,
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null, null,
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INFO_DESCRIPTION_START_DATETIME.get());
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argParser.addArgument(startArg, taskGroup);
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} catch (ArgumentException e) {
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// should never happen
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}
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return argParser;
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}
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/**
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* Validates arguments related to task scheduling. This should be
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* called after the <code>ArgumentParser.parseArguments</code> has
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* been called.
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*
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* @throws ArgumentException if there is a problem with the arguments
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*/
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protected void validateTaskArgs() throws ArgumentException {
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if (startArg.isPresent() && !NOW.equals(startArg.getValue())) {
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try {
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StaticUtils.parseDateTimeString(startArg.getValue());
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} catch (ParseException pe) {
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throw new ArgumentException(ERR_START_DATETIME_FORMAT.get());
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}
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}
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}
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/**
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* {@inheritDoc}
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*/
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public Date getStartDateTime() {
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Date start = null;
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// If the start time arg is present parse its value
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if (startArg != null && startArg.isPresent()) {
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if (NOW.equals(startArg.getValue())) {
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start = new Date();
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} else {
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try {
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start = StaticUtils.parseDateTimeString(startArg.getValue());
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} catch (ParseException pe) {
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// ignore; valiidated in validateTaskArgs()
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}
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}
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}
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return start;
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}
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/**
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* Either invokes initiates this tool's local action or schedule this
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* tool using the tasks interface based on user input.
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*
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* @param argParser used to parse user arguments
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* @param initializeServer indicates whether or not to initialize the
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* directory server in the case of a local action
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* @param out stream to write messages; may be null
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* @param err stream to write messages; may be null
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* @return int indicating the result of this action
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*/
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protected int process(LDAPConnectionArgumentParser argParser,
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boolean initializeServer,
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PrintStream out, PrintStream err) {
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int ret;
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if (argParser.argumentsPresent())
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{
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if (initializeServer)
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{
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try
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{
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DirectoryServer.bootstrapClient();
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DirectoryServer.initializeJMX();
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}
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catch (Exception e)
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{
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Message message = ERR_SERVER_BOOTSTRAP_ERROR.get(
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getExceptionMessage(e));
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err.println(wrapText(message, MAX_LINE_WIDTH));
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return 1;
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}
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}
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try {
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LDAPConnection conn = argParser.connect(out, err);
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TaskClient tc = new TaskClient(conn);
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TaskEntry taskEntry = tc.schedule(this);
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Message startTime = taskEntry.getScheduledStartTime();
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if (startTime == null || startTime.length() == 0) {
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out.println(
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wrapText(INFO_TASK_TOOL_TASK_SCHEDULED_NOW.get(
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taskEntry.getType(),
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taskEntry.getId()),
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MAX_LINE_WIDTH));
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} else {
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out.println(
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wrapText(INFO_TASK_TOOL_TASK_SCHEDULED_FUTURE.get(
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taskEntry.getType(),
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taskEntry.getId(),
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taskEntry.getScheduledStartTime()),
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MAX_LINE_WIDTH));
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}
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if (!startArg.isPresent()) {
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// Poll the task printing log messages until finished
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String taskId = taskEntry.getId();
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Set<Message> printedLogMessages = new HashSet<Message>();
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do {
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taskEntry = tc.getTaskEntry(taskId);
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List<Message> logs = taskEntry.getLogMessages();
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for (Message log : logs) {
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if (!printedLogMessages.contains(log)) {
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printedLogMessages.add(log);
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out.println(log);
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}
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}
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try {
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Thread.sleep(SYNCHRONOUS_TASK_POLL_INTERVAL);
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} catch (InterruptedException e) {
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// ignore
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}
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} while (!taskEntry.isDone());
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if (TaskState.isSuccessful(taskEntry.getTaskState())) {
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return 0;
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} else {
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return 1;
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}
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}
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ret = 0;
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} catch (LDAPConnectionException e) {
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Message message = ERR_TASK_TOOL_START_TIME_NO_LDAP.get(e.getMessage());
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if (err != null) err.println(wrapText(message, MAX_LINE_WIDTH));
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ret = 1;
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} catch (IOException ioe) {
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Message message = ERR_TASK_TOOL_IO_ERROR.get(String.valueOf(ioe));
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if (err != null) err.println(wrapText(message, MAX_LINE_WIDTH));
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ret = 1;
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} catch (ASN1Exception ae) {
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Message message = ERR_TASK_TOOL_DECODE_ERROR.get(ae.getMessage());
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if (err != null) err.println(wrapText(message, MAX_LINE_WIDTH));
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ret = 1;
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} catch (LDAPException le) {
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Message message = ERR_TASK_TOOL_DECODE_ERROR.get(le.getMessage());
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if (err != null) err.println(wrapText(message, MAX_LINE_WIDTH));
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ret = 1;
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} catch (OpenDsException e) {
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Message message = e.getMessageObject();
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if (err != null) err.println(wrapText(message, MAX_LINE_WIDTH));
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ret = 1;
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}
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} else {
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ret = processLocal(initializeServer, out, err);
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}
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return ret;
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}
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}
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