org.kualigan.maven.plugins.liquibase.RollbackMojo Maven / Gradle / Ivy
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Liquibase Maven Plugin with emphasis on structured development and conventions.
// Copyright 2011 Leo Przybylski. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY ''AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those of the
// authors and should not be interpreted as representing official policies, either expressed
// or implied, of Leo Przybylski.
package org.kualigan.maven.plugins.liquibase;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.Component;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.project.MavenProject;
import org.apache.maven.artifact.manager.WagonManager;
import org.liquibase.maven.plugins.AbstractLiquibaseMojo;
import org.liquibase.maven.plugins.AbstractLiquibaseUpdateMojo;
import org.liquibase.maven.plugins.LiquibaseRollback;
import liquibase.Liquibase;
import liquibase.exception.LiquibaseException;
import liquibase.serializer.ChangeLogSerializer;
import liquibase.parser.core.xml.LiquibaseEntityResolver;
import liquibase.parser.core.xml.XMLChangeLogSAXParser;
import org.apache.maven.wagon.authentication.AuthenticationInfo;
import liquibase.util.xml.DefaultXmlWriter;
import org.tmatesoft.svn.core.ISVNDirEntryHandler;
import org.tmatesoft.svn.core.SVNDirEntry;
import org.tmatesoft.svn.core.SVNDepth;
import org.tmatesoft.svn.core.SVNException;
import org.tmatesoft.svn.core.SVNURL;
import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager;
import org.tmatesoft.svn.core.io.SVNRepository;
import org.tmatesoft.svn.core.io.SVNRepositoryFactory;
import org.tmatesoft.svn.core.wc.ISVNOptions;
import org.tmatesoft.svn.core.wc.SVNWCUtil;
import org.tmatesoft.svn.core.wc.SVNClientManager;
import org.tmatesoft.svn.core.wc.SVNWCClient;
import org.tmatesoft.svn.core.internal.io.dav.DAVRepositoryFactory;
import org.w3c.dom.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.io.File;
import java.io.FilenameFilter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import static org.tmatesoft.svn.core.wc.SVNRevision.HEAD;
import static org.tmatesoft.svn.core.wc.SVNRevision.WORKING;
/**
* Undo for a migration of Liquibase changelogs. Basically, rolls back any changes that were made in the most recent
* migration.
*
* @author Leo Przybylski
* @goal rollback
*/
public class RollbackMojo extends LiquibaseRollback {
public static final String DEFAULT_CHANGELOG_PATH = "src/main/scripts/changelogs";
public static final String DEFAULT_UPDATE_FILE = "target/changelogs/update.xml";
public static final String DEFAULT_UPDATE_PATH = "target/changelogs/update";
public static final String DEFAULT_LBPROP_PATH = "target/test-classes/liquibase/";
public static final String TEST_ROLLBACK_TAG = "test";
/**
* Suffix for fields that are representing a default value for a another field.
*/
private static final String DEFAULT_FIELD_SUFFIX = "Default";
/**
* The fully qualified name of the driver class to use to connect to the database.
*
* @parameter expression="${liquibase.driver}"
*/
protected String driver;
/**
* The Database URL to connect to for executing Liquibase.
*
* @parameter expression="${liquibase.url}"
*/
protected String url;
/**
The Maven Wagon manager to use when obtaining server authentication details.
@component role="org.apache.maven.artifact.manager.WagonManager"
@required
@readonly
*/
protected WagonManager wagonManager;
/**
* The server id in settings.xml to use when authenticating with.
*
* @parameter expression="${liquibase.server}"
*/
private String server;
/**
* The database username to use to connect to the specified database.
*
* @parameter expression="${liquibase.username}"
*/
protected String username;
/**
* The database password to use to connect to the specified database.
*
* @parameter expression="${liquibase.password}"
*/
protected String password;
/**
* Use an empty string as the password for the database connection. This should not be
* used along side the {@link #password} setting.
*
* @parameter expression="${liquibase.emptyPassword}" default-value="false"
* @deprecated Use an empty or null value for the password instead.
*/
protected boolean emptyPassword;
/**
* The default schema name to use the for database connection.
*
* @parameter expression="${liquibase.defaultSchemaName}"
*/
protected String defaultSchemaName;
/**
* The class to use as the database object.
*
* @parameter expression="${liquibase.databaseClass}"
*/
protected String databaseClass;
/**
* Controls the prompting of users as to whether or not they really want to run the
* changes on a database that is not local to the machine that the user is current
* executing the plugin on.
*
* @parameter expression="${liquibase.promptOnNonLocalDatabase}" default-value="true"
*/
protected boolean promptOnNonLocalDatabase;
/**
* Allows for the maven project artifact to be included in the class loader for
* obtaining the Liquibase property and DatabaseChangeLog files.
*
* @parameter expression="${liquibase.includeArtifact}" default-value="true"
*/
protected boolean includeArtifact;
/**
* Allows for the maven test output directory to be included in the class loader for
* obtaining the Liquibase property and DatabaseChangeLog files.
*
* @parameter expression="${liquibase.includeTestOutputDirectory}" default-value="true"
*/
protected boolean includeTestOutputDirectory;
/**
* Controls the verbosity of the output from invoking the plugin.
*
* @parameter expression="${liquibase.verbose}" default-value="false"
* @description Controls the verbosity of the plugin when executing
*/
protected boolean verbose;
/**
* Controls the level of logging from Liquibase when executing. The value can be
* "all", "finest", "finer", "fine", "info", "warning", "severe" or "off". The value is
* case insensitive.
*
* @parameter expression="${liquibase.logging}" default-value="INFO"
* @description Controls the verbosity of the plugin when executing
*/
protected String logging;
/**
* The Liquibase properties file used to configure the Liquibase {@link
* liquibase.Liquibase}.
*
* @parameter expression="${liquibase.propertyFile}"
*/
protected String propertyFile;
/**
* Flag allowing for the Liquibase properties file to override any settings provided in
* the Maven plugin configuration. By default if a property is explicity specified it is
* not overridden if it also appears in the properties file.
*
* @parameter expression="${liquibase.propertyFileWillOverride}" default-value="false"
*/
protected boolean propertyFileWillOverride;
/**
* Flag for forcing the checksums to be cleared from teh DatabaseChangeLog table.
*
* @parameter expression="${liquibase.clearCheckSums}" default-value="false"
*/
protected boolean clearCheckSums;
/**
* List of system properties to pass to the database.
*
* @parameter
*/
protected Properties systemProperties;
/**
* @parameter default-value="${project.basedir}/src/main/scripts/changelogs"
*/
protected File changeLogSavePath;
/**
* @parameter expression="${lb.changeLogTagUrl}"
*/
protected URL changeLogTagUrl;
/**
* Location of an update.xml
*
* @parameter expression="${lb.updatePath}" default-value="${project.basedir}/src/main/changelogs"
*/
protected File updatePath;
/**
* The Maven project that plugin is running under.
* @parameter expression="${project}"
* @required
* @readonly
*/
@Parameter(property = "project", required = true)
protected MavenProject project;
protected File getBasedir() {
return project.getBasedir();
}
protected void doFieldHack() {
for (final Field field : getClass().getDeclaredFields()) {
try {
final Field parentField = getDeclaredField(getClass().getSuperclass(), field.getName());
if (parentField != null) {
getLog().debug("Setting " + field.getName() + " in " + parentField.getDeclaringClass().getName() + " to " + field.get(this));
parentField.set(this, field.get(this));
}
}
catch (Exception e) {
}
}
}
protected File[] getLiquibasePropertiesFiles() throws MojoExecutionException {
try {
final File[] retval = new File(getBasedir(), DEFAULT_LBPROP_PATH).listFiles(new FilenameFilter() {
public boolean accept(final File dir, final String name) {
return name.endsWith(".properties");
}
});
if (retval == null) {
throw new NullPointerException();
}
return retval;
}
catch (Exception e) {
getLog().warn("Unable to get liquibase properties files ");
return new File[0];
// throw new MojoExecutionException("Unable to get liquibase properties files ", e);
}
}
@Override
public void execute() throws MojoExecutionException, MojoFailureException {
doFieldHack();
try {
Method meth = AbstractLiquibaseMojo.class.getDeclaredMethod("processSystemProperties");
meth.setAccessible(true);
meth.invoke(this);
}
catch (Exception e) {
e.printStackTrace();
}
ClassLoader artifactClassLoader = getMavenArtifactClassLoader();
final File[] propertyFiles = getLiquibasePropertiesFiles();
// execute change logs on each database
for (final File props : propertyFiles) {
try {
propertyFile = props.getCanonicalPath();
doFieldHack();
configureFieldsAndValues(getFileOpener(artifactClassLoader));
doFieldHack();
}
catch (Exception e) {
throw new MojoExecutionException(e.getMessage(), e);
}
}
changeLogFile = new File(changeLogSavePath, "update.xml").getPath();
rollbackCount = 1;
super.execute();
}
@Override
protected void performLiquibaseTask(Liquibase liquibase) throws LiquibaseException {
liquibase.rollback("undo", contexts);
}
@Override
protected void printSettings(String indent) {
super.printSettings(indent);
}
/**
* Parses a properties file and sets the assocaited fields in the plugin.
*
* @param propertiesInputStream The input stream which is the Liquibase properties that
* needs to be parsed.
* @throws org.apache.maven.plugin.MojoExecutionException
* If there is a problem parsing
* the file.
*/
protected void parsePropertiesFile(InputStream propertiesInputStream)
throws MojoExecutionException {
if (propertiesInputStream == null) {
throw new MojoExecutionException("Properties file InputStream is null.");
}
Properties props = new Properties();
try {
props.load(propertiesInputStream);
}
catch (IOException e) {
throw new MojoExecutionException("Could not load the properties Liquibase file", e);
}
for (Iterator it = props.keySet().iterator(); it.hasNext();) {
String key = null;
try {
key = (String) it.next();
Field field = getDeclaredField(this.getClass(), key);
if (propertyFileWillOverride) {
setFieldValue(field, props.get(key).toString());
} else {
if (!isCurrentFieldValueSpecified(field)) {
getLog().debug(" properties file setting value: " + field.getName());
setFieldValue(field, props.get(key).toString());
}
}
}
catch (Exception e) {
getLog().info(" '" + key + "' in properties file is not being used by this "
+ "task.");
}
}
}
/**
* This method will check to see if the user has specified a value different to that of
* the default value. This is not an ideal solution, but should cover most situations in
* the use of the plugin.
*
* @param f The Field to check if a user has specified a value for.
* @return true if the user has specified a value.
*/
private boolean isCurrentFieldValueSpecified(Field f) throws IllegalAccessException {
Object currentValue = f.get(this);
if (currentValue == null) {
return false;
}
Object defaultValue = getDefaultValue(f);
if (defaultValue == null) {
return currentValue != null;
} else {
// There is a default value, check to see if the user has selected something other
// than the default
return !defaultValue.equals(f.get(this));
}
}
private Object getDefaultValue(Field field) throws IllegalAccessException {
List allFields = new ArrayList();
allFields.addAll(Arrays.asList(getClass().getDeclaredFields()));
allFields.addAll(Arrays.asList(AbstractLiquibaseMojo.class.getDeclaredFields()));
for (Field f : allFields) {
if (f.getName().equals(field.getName() + DEFAULT_FIELD_SUFFIX)) {
f.setAccessible(true);
return f.get(this);
}
}
return null;
}
/**
* Recursively searches for the field specified by the fieldName in the class and all
* the super classes until it either finds it, or runs out of parents.
* @param clazz The Class to start searching from.
* @param fieldName The name of the field to retrieve.
* @return The {@link Field} identified by the field name.
* @throws NoSuchFieldException If the field was not found in the class or any of its
* super classes.
*/
protected Field getDeclaredField(Class clazz, String fieldName)
throws NoSuchFieldException {
getLog().debug("Checking " + clazz.getName() + " for '" + fieldName + "'");
try {
Field f = clazz.getDeclaredField(fieldName);
if (f != null) {
return f;
}
}
catch (Exception e) {
}
while (clazz.getSuperclass() != null) {
clazz = clazz.getSuperclass();
getLog().debug("Checking " + clazz.getName() + " for '" + fieldName + "'");
try {
Field f = clazz.getDeclaredField(fieldName);
if (f != null) {
return f;
}
}
catch (Exception e) {
}
}
throw new NoSuchFieldException("The field '" + fieldName + "' could not be "
+ "found in the class of any of its parent "
+ "classes.");
}
private void setFieldValue(Field field, String value) throws IllegalAccessException {
if (field.getType().equals(Boolean.class) || field.getType().equals(boolean.class)) {
field.set(this, Boolean.valueOf(value));
} else {
field.set(this, value);
}
}
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