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/*
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* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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package com.nokia.helium.metadata.ant.types;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.regex.Pattern;
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import javax.persistence.EntityManager;
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import javax.persistence.EntityManagerFactory;
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import org.apache.tools.ant.Project;
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import org.apache.tools.ant.Task;
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import org.apache.tools.ant.types.DataType;
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import org.apache.tools.ant.types.Resource;
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import org.apache.tools.ant.types.ResourceCollection;
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import com.nokia.helium.metadata.MetaDataInput;
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import com.nokia.helium.metadata.MetadataException;
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import com.nokia.helium.metadata.model.metadata.LogFile;
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import com.nokia.helium.metadata.model.metadata.LogFileDAO;
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/**
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* Abstract base class to provide common functionality for the log parsing.
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*/
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public abstract class LogMetaDataInput extends DataType implements MetaDataInput {
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private List<ResourceCollection> resourceCollections = new ArrayList<ResourceCollection>();
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private Task task;
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private List<MetaDataFilterSet> metadataFilterSets = new ArrayList<MetaDataFilterSet>();
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private List<MetaDataFilter> completeFilterList;
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/**
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* Adds the fileset (list of input log files to be processed).
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* @param fileSet fileset to be added
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*
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*/
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public void add(ResourceCollection resourceCollection) {
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resourceCollections.add(resourceCollection);
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}
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/**
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* Adds the fileset (list of input log files to be processed).
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* @param fileSet fileset to be added
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*
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*/
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public void add(MetaDataFilterSet metadataFilterSet) {
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metadataFilterSets.add(metadataFilterSet);
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}
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/**
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* Helper function called by ant to create the new filter
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*/
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public MetaDataFilterSet createMetaDataFilterSet() {
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MetaDataFilterSet filterSet = new MetaDataFilterSet();
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add(filterSet);
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return filterSet;
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}
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/**
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* Helper function to return all the filters associated with this metadata input
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* @return all the filters merged based on the order of definition.
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*/
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private synchronized List<MetaDataFilter> getMetaDataFilters() {
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if (completeFilterList == null) {
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completeFilterList = new ArrayList<MetaDataFilter>();
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for (MetaDataFilterSet filterSet : metadataFilterSets) {
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completeFilterList.addAll(filterSet.getAllFilters());
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}
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}
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return completeFilterList;
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}
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/**
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* Returns the severity matches for the log text
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* @param log text for which the severity needs to be identified.
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* @return the severity of the input text
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*/
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protected SeverityEnum.Severity getSeverity(String logText) {
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for (MetaDataFilter filter : getMetaDataFilters()) {
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Pattern pattern = filter.getPattern();
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if ((pattern.matcher(logText)).matches()) {
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return filter.getSeverity();
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}
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}
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return SeverityEnum.Severity.NONE;
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}
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/**
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* Logging through the Ant task
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*/
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public void log(String message) {
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log(message, Project.MSG_INFO);
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}
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/**
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* Logging through the Ant task
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*/
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public void log(String message, int level) {
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if (task != null) {
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task.log(message, level);
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} else {
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getProject().log(message, level);
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}
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}
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/**
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* Get the LogFile instance for the file log.
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* @param entityManager the entityManager to do the query.
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* @param file the log file locations
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* @return the LogFile entry for the file log.
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*/
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protected LogFile getLogFile(EntityManager entityManager, File file) {
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// Creating the filename
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LogFileDAO lfdao = new LogFileDAO();
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lfdao.setEntityManager(entityManager);
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LogFile logFile = lfdao.findByLogName(file);
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if (logFile == null) {
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log("Creating a logfile entry.", Project.MSG_DEBUG);
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logFile = new LogFile();
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logFile.setPath(file.getAbsolutePath());
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entityManager.getTransaction().begin();
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entityManager.persist(logFile);
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entityManager.getTransaction().commit();
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}
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return logFile;
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}
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/**
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* {@inheritDoc}
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* Implements default behavior, for each log file the reference inside
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* the database will first be removed, and then data will be collected.
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*/
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@SuppressWarnings("unchecked")
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public void extract(Task task, EntityManagerFactory factory)
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throws MetadataException {
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this.task = task;
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try {
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for (ResourceCollection resourceCollection : resourceCollections) {
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Iterator<Resource> ri = (Iterator<Resource>)resourceCollection.iterator();
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while (ri.hasNext()) {
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File file = new File(ri.next().toString());
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remove(factory, file);
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log("Extracting data from " + file);
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extract(factory, file);
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}
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}
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} finally {
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this.task = null;
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}
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}
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/**
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* Removing a file log data from the database (if any).
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* @param factory
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* @param file
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* @throws MetadataException
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*/
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public void remove(EntityManagerFactory factory, File file) throws MetadataException {
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EntityManager entityManager = factory.createEntityManager();
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try {
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LogFileDAO logFileDAO = new LogFileDAO();
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logFileDAO.setEntityManager(entityManager);
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LogFile logFile = logFileDAO.findByLogName(file);
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if (logFile != null) {
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log("Removing log from database: " + file.getAbsolutePath());
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entityManager.getTransaction().begin();
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logFileDAO.remove(logFile);
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entityManager.getTransaction().commit();
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}
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} finally {
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entityManager.close();
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}
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}
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/**
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* Extracting the data from
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* @param factory
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* @param file
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* @throws MetadataException
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*/
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public abstract void extract(EntityManagerFactory factory, File file) throws MetadataException;
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} |