org.apache.geronimo.system.configuration.GBeanOverride Maven / Gradle / Ivy
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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geronimo.system.configuration;
import java.beans.PropertyEditor;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Serializable;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.geronimo.common.propertyeditor.PropertyEditors;
import org.apache.geronimo.gbean.AbstractName;
import org.apache.geronimo.gbean.AbstractNameQuery;
import org.apache.geronimo.gbean.GAttributeInfo;
import org.apache.geronimo.gbean.GBeanData;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.ReferencePatterns;
import org.apache.geronimo.gbean.GReferenceInfo;
import org.apache.geronimo.kernel.InvalidGBeanException;
import org.apache.geronimo.kernel.config.InvalidConfigException;
import org.apache.geronimo.kernel.repository.Artifact;
import org.apache.geronimo.kernel.util.XmlUtil;
import org.apache.geronimo.util.EncryptionManager;
import org.apache.geronimo.system.configuration.condition.JexlExpressionParser;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
/**
* @version $Rev: 555993 $ $Date: 2007-07-13 09:39:25 -0400 (Fri, 13 Jul 2007) $
*/
public class GBeanOverride implements Serializable {
private static final Log log = LogFactory.getLog(GBeanOverride.class);
private final Object name;
private boolean load;
private final Map attributes = new LinkedHashMap();
private final Map references = new LinkedHashMap();
private final ArrayList clearAttributes = new ArrayList();
private final ArrayList nullAttributes = new ArrayList();
private final ArrayList clearReferences = new ArrayList();
private final String gbeanInfo;
private final JexlExpressionParser expressionParser;
public GBeanOverride(String name, boolean load, JexlExpressionParser expressionParser) {
this.name = name;
this.load = load;
gbeanInfo = null;
this.expressionParser = expressionParser;
}
public GBeanOverride(AbstractName name, boolean load, JexlExpressionParser expressionParser) {
this.name = name;
this.load = load;
gbeanInfo = null;
this.expressionParser = expressionParser;
}
public GBeanOverride(GBeanOverride original, String oldArtifact, String newArtifact) {
Object name = original.name;
if (name instanceof String) {
name = replace((String) name, oldArtifact, newArtifact);
} else if (name instanceof AbstractName) {
String value = name.toString();
value = replace(value, oldArtifact, newArtifact);
name = new AbstractName(URI.create(value));
}
this.name = name;
this.load = original.load;
this.attributes.putAll(original.attributes);
this.references.putAll(original.references);
this.clearAttributes.addAll(original.clearAttributes);
this.nullAttributes.addAll(original.nullAttributes);
this.clearReferences.addAll(original.clearReferences);
this.gbeanInfo = original.gbeanInfo;
this.expressionParser = original.expressionParser;
}
private static String replace(String original, String oldArtifact, String newArtifact) {
int pos = original.indexOf(oldArtifact);
if (pos == -1) {
return original;
}
int last = -1;
StringBuffer buf = new StringBuffer();
while (pos > -1) {
buf.append(original.substring(last + 1, pos));
buf.append(newArtifact);
last = pos + oldArtifact.length() - 1;
pos = original.indexOf(oldArtifact, last);
}
buf.append(original.substring(last + 1));
return buf.toString();
}
public GBeanOverride(GBeanData gbeanData, JexlExpressionParser expressionParser, ClassLoader classLoader) throws InvalidAttributeException {
GBeanInfo gbeanInfo = gbeanData.getGBeanInfo();
this.gbeanInfo = gbeanInfo.getSourceClass();
if (this.gbeanInfo == null) {
throw new IllegalArgumentException("GBeanInfo must have a source class set");
}
name = gbeanData.getAbstractName();
load = true;
// set attributes
for (Object o : gbeanData.getAttributes().entrySet()) {
Map.Entry entry = (Map.Entry) o;
String attributeName = (String) entry.getKey();
GAttributeInfo attributeInfo = gbeanInfo.getAttribute(attributeName);
if (attributeInfo == null) {
throw new InvalidAttributeException("No attribute: " + attributeName + " for gbean: " + gbeanData.getAbstractName());
}
Object attributeValue = entry.getValue();
setAttribute(attributeName, attributeValue, attributeInfo.getType(), classLoader);
}
// references can be coppied in blind
references.putAll(gbeanData.getReferences());
this.expressionParser = expressionParser;
}
public GBeanOverride(Element gbean, JexlExpressionParser expressionParser) throws InvalidGBeanException {
String nameString = gbean.getAttribute("name");
if (nameString.indexOf('?') > -1) {
name = new AbstractName(URI.create(nameString));
} else {
name = nameString;
}
String gbeanInfoString = gbean.getAttribute("gbeanInfo");
if (gbeanInfoString.length() > 0) {
gbeanInfo = gbeanInfoString;
} else {
gbeanInfo = null;
}
if (gbeanInfo != null && !(name instanceof AbstractName)) {
throw new InvalidGBeanException("A gbean element using the gbeanInfo attribute must be specified using a full AbstractName: name=" + nameString);
}
String loadString = gbean.getAttribute("load");
load = !"false".equals(loadString);
// attributes
NodeList attributes = gbean.getElementsByTagName("attribute");
for (int a = 0; a < attributes.getLength(); a++) {
Element attribute = (Element) attributes.item(a);
String attributeName = attribute.getAttribute("name");
// Check to see if there is a value attribute
if (attribute.hasAttribute("value")) {
setAttribute(attributeName, (String) EncryptionManager.decrypt(attribute.getAttribute("value")));
continue;
}
// Check to see if there is a null attribute
if (attribute.hasAttribute("null")) {
String nullString = attribute.getAttribute("null");
if (nullString.equals("true")) {
setNullAttribute(attributeName);
continue;
}
}
String rawAttribute = getContentsAsText(attribute);
// If there are no contents, then it's to be cleared
if (rawAttribute.length() == 0) {
setClearAttribute(attributeName);
continue;
}
String attributeValue = (String) EncryptionManager.decrypt(rawAttribute);
setAttribute(attributeName, attributeValue);
}
// references
NodeList references = gbean.getElementsByTagName("reference");
for (int r = 0; r < references.getLength(); r++) {
Element reference = (Element) references.item(r);
String referenceName = reference.getAttribute("name");
Set objectNamePatterns = new LinkedHashSet();
NodeList patterns = reference.getElementsByTagName("pattern");
// If there is no pattern, then its an empty set, so its a
// cleared value
if (patterns.getLength() == 0) {
setClearReference(referenceName);
continue;
}
for (int p = 0; p < patterns.getLength(); p++) {
Element pattern = (Element) patterns.item(p);
if (pattern == null)
continue;
String groupId = getChildAsText(pattern, "groupId");
String artifactId = getChildAsText(pattern, "artifactId");
String version = getChildAsText(pattern, "version");
String type = getChildAsText(pattern, "type");
String module = getChildAsText(pattern, "module");
String name = getChildAsText(pattern, "name");
Artifact referenceArtifact = null;
if (artifactId != null) {
referenceArtifact = new Artifact(groupId, artifactId, version, type);
}
Map nameMap = new HashMap();
if (module != null) {
nameMap.put("module", module);
}
if (name != null) {
nameMap.put("name", name);
}
AbstractNameQuery abstractNameQuery = new AbstractNameQuery(referenceArtifact, nameMap, Collections.EMPTY_SET);
objectNamePatterns.add(abstractNameQuery);
}
setReferencePatterns(referenceName, new ReferencePatterns(objectNamePatterns));
}
this.expressionParser = expressionParser;
}
private static String getChildAsText(Element element, String name) throws InvalidGBeanException {
NodeList children = element.getElementsByTagName(name);
if (children == null || children.getLength() == 0) {
return null;
}
if (children.getLength() > 1) {
throw new InvalidGBeanException("invalid name, too many parts named: " + name);
}
return getContentsAsText((Element) children.item(0));
}
private static String getContentsAsText(Element element) throws InvalidGBeanException {
String value = "";
NodeList text = element.getChildNodes();
for (int t = 0; t < text.getLength(); t++) {
Node n = text.item(t);
if (n.getNodeType() == Node.TEXT_NODE) {
value += n.getNodeValue();
} else {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
OutputFormat of = new OutputFormat(Method.XML, null, false);
of.setOmitXMLDeclaration(true);
XMLSerializer serializer = new XMLSerializer(pw, of);
try {
serializer.prepare();
serializer.serializeNode(n);
value += sw.toString();
} catch (IOException ioe) {
throw new InvalidGBeanException("Error serializing GBean element", ioe);
}
}
}
return value.trim();
}
public Object getName() {
return name;
}
public String getGBeanInfo() {
return gbeanInfo;
}
public boolean isLoad() {
return load;
}
public void setLoad(boolean load) {
this.load = load;
}
public Map getAttributes() {
return attributes;
}
public String getAttribute(String attributeName) {
return attributes.get(attributeName);
}
public ArrayList getClearAttributes() {
return clearAttributes;
}
public ArrayList getNullAttributes() {
return nullAttributes;
}
public boolean getNullAttribute(String attributeName) {
return nullAttributes.contains(attributeName);
}
public boolean getClearAttribute(String attributeName) {
return clearAttributes.contains(attributeName);
}
public ArrayList getClearReferences() {
return clearReferences;
}
public boolean getClearReference(String referenceName) {
return clearReferences.contains(referenceName);
}
public void setClearAttribute(String attributeName) {
if (!clearAttributes.contains(attributeName))
clearAttributes.add(attributeName);
}
public void setNullAttribute(String attributeName) {
if (!nullAttributes.contains(attributeName))
nullAttributes.add(attributeName);
}
public void setClearReference(String referenceName) {
if (!clearReferences.contains(referenceName))
clearReferences.add(referenceName);
}
public void setAttribute(String attributeName, Object attributeValue, String attributeType, ClassLoader classLoader) throws InvalidAttributeException {
String stringValue = getAsText(attributeValue, attributeType, classLoader);
setAttribute(attributeName, stringValue);
}
public void setAttribute(String attributeName, String attributeValue) {
attributes.put(attributeName, attributeValue);
}
public Map getReferences() {
return references;
}
public ReferencePatterns getReferencePatterns(String name) {
return references.get(name);
}
public void setReferencePatterns(String name, ReferencePatterns patterns) {
references.put(name, patterns);
}
public boolean applyOverrides(GBeanData data, Artifact configName, AbstractName gbeanName, ClassLoader classLoader) throws InvalidConfigException {
if (!isLoad()) {
return false;
}
GBeanInfo gbeanInfo = data.getGBeanInfo();
// set attributes
for (Map.Entry entry : getAttributes().entrySet()) {
String attributeName = entry.getKey();
GAttributeInfo attributeInfo = gbeanInfo.getAttribute(attributeName);
if (attributeInfo == null) {
throw new InvalidConfigException("No attribute: " + attributeName + " for gbean: " + data.getAbstractName());
}
String valueString = entry.getValue();
Object value = getValue(attributeInfo, valueString, configName, gbeanName, classLoader);
data.setAttribute(attributeName, value);
}
//Clear attributes
for (String attribute : getClearAttributes()) {
if (getClearAttribute(attribute)) {
data.clearAttribute(attribute);
}
}
//Null attributes
for (String attribute : getNullAttributes()) {
if (getNullAttribute(attribute)) {
data.setAttribute(attribute, null);
}
}
// set references
for (Map.Entry entry : getReferences().entrySet()) {
String referenceName = entry.getKey();
GReferenceInfo referenceInfo = gbeanInfo.getReference(referenceName);
if (referenceInfo == null) {
throw new InvalidConfigException("No reference: " + referenceName + " for gbean: " + data.getAbstractName());
}
ReferencePatterns referencePatterns = entry.getValue();
data.setReferencePatterns(referenceName, referencePatterns);
}
//Clear references
for (String reference : getClearReferences()) {
if (getClearReference(reference)) {
data.clearReference(reference);
}
}
return true;
}
private synchronized Object getValue(GAttributeInfo attribute, String value, Artifact configurationName, AbstractName gbeanName, ClassLoader classLoader) {
if (value == null) {
return null;
}
value = substituteVariables(attribute.getName(), value);
try {
PropertyEditor editor = PropertyEditors.findEditor(attribute.getType(), classLoader);
if (editor == null) {
log.debug("Unable to parse attribute of type " + attribute.getType() + "; no editor found");
return null;
}
editor.setAsText(value);
log.debug("Setting value for " + configurationName + "/" + gbeanName + "/" + attribute.getName() + " to value " + value);
return editor.getValue();
} catch (ClassNotFoundException e) {
log.error("Unable to load attribute type " + attribute.getType());
return null;
}
}
public String substituteVariables(String attributeName, String input) {
if (expressionParser != null) {
return expressionParser.parse(input);
}
return input;
}
/**
* Creates a new child of the supplied parent with the data for this
* GBeanOverride, adds it to the parent, and then returns the new
* child element.
* @param doc document containing the module, hence also the element returned from this method.
* @param parent module element this override will be inserted into
* @return newly created element for this override
*/
public Element writeXml(Document doc, Element parent) {
String gbeanName;
if (name instanceof String) {
gbeanName = (String) name;
} else {
gbeanName = name.toString();
}
Element gbean = doc.createElement("gbean");
parent.appendChild(gbean);
gbean.setAttribute("name", gbeanName);
if (gbeanInfo != null) {
gbean.setAttribute("gbeanInfo", gbeanInfo);
}
if (!load) {
gbean.setAttribute("load", "false");
}
// attributes
for (Map.Entry entry : attributes.entrySet()) {
String name = entry.getKey();
String value = entry.getValue();
if (value == null) {
setNullAttribute(name);
} else {
if (getNullAttribute(name)) {
nullAttributes.remove(name);
}
if (name.toLowerCase().indexOf("password") > -1) {
value = EncryptionManager.encrypt(value);
}
Element attribute = doc.createElement("attribute");
attribute.setAttribute("name", name);
gbean.appendChild(attribute);
if (value.length() == 0) {
attribute.setAttribute("value", "");
} else {
try {
//
// NOTE: Construct a new document to handle mixed content attribute values
// then add nodes which are children of the first node. This allows
// value to be XML or text.
//
DocumentBuilderFactory factory = XmlUtil.newDocumentBuilderFactory();
DocumentBuilder builder = factory.newDocumentBuilder();
/**
* if there was a value such as jdbc url with & then when that value was oulled
* from the config.xml the & would have been replaced/converted to '&', we need to check
* and change it back because an & would create a parse exception.
*/
value = value.replaceAll("&(?!amp;)", "&");
// String unsubstitutedValue = unsubstitutedAttributes.get(name);
// if (unsubstitutedValue != null) {
// log.debug("writeXML attribute " + name
// + " using raw value "
// + unsubstitutedValue
// + " instead of cooked value "
// + value + ".");
// value = unsubstitutedValue;
// }
// Wrap value in an element to be sure we can handle xml or text values
String xml = "" + value + " ";
InputSource input = new InputSource(new StringReader(xml));
Document fragment = builder.parse(input);
Node root = fragment.getFirstChild();
NodeList children = root.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node child = children.item(i);
// Import the child (and its children) into the new document
child = doc.importNode(child, true);
attribute.appendChild(child);
}
}
catch (Exception e) {
throw new RuntimeException("Failed to write attribute value fragment: " + e.getMessage(), e);
}
}
}
}
// cleared attributes
for (String name : clearAttributes) {
Element attribute = doc.createElement("attribute");
gbean.appendChild(attribute);
attribute.setAttribute("name", name);
}
// Null attributes
for (String name : nullAttributes) {
Element attribute = doc.createElement("attribute");
gbean.appendChild(attribute);
attribute.setAttribute("name", name);
attribute.setAttribute("null", "true");
}
// references
for (Map.Entry entry : references.entrySet()) {
String name = entry.getKey();
ReferencePatterns patterns = entry.getValue();
Element reference = doc.createElement("reference");
reference.setAttribute("name", name);
gbean.appendChild(reference);
Set patternSet;
if (patterns.isResolved()) {
patternSet = Collections.singleton(new AbstractNameQuery(patterns.getAbstractName()));
} else {
patternSet = patterns.getPatterns();
}
for (AbstractNameQuery pattern : patternSet) {
Element pat = doc.createElement("pattern");
reference.appendChild(pat);
Artifact artifact = pattern.getArtifact();
if (artifact != null) {
if (artifact.getGroupId() != null) {
Element group = doc.createElement("groupId");
group.appendChild(doc.createTextNode(artifact.getGroupId()));
pat.appendChild(group);
}
if (artifact.getArtifactId() != null) {
Element art = doc.createElement("artifactId");
art.appendChild(doc.createTextNode(artifact.getArtifactId()));
pat.appendChild(art);
}
if (artifact.getVersion() != null) {
Element version = doc.createElement("version");
version.appendChild(doc.createTextNode(artifact.getVersion().toString()));
pat.appendChild(version);
}
if (artifact.getType() != null) {
Element type = doc.createElement("type");
type.appendChild(doc.createTextNode(artifact.getType()));
pat.appendChild(type);
}
}
Map nameMap = pattern.getName();
if (nameMap.get("module") != null) {
Element module = doc.createElement("module");
module.appendChild(doc.createTextNode(nameMap.get("module").toString()));
pat.appendChild(module);
}
if (nameMap.get("name") != null) {
Element patName = doc.createElement("name");
patName.appendChild(doc.createTextNode(nameMap.get("name").toString()));
pat.appendChild(patName);
}
}
}
// cleared references
for (String name : clearReferences) {
Element reference = doc.createElement("reference");
reference.setAttribute("name", name);
gbean.appendChild(reference);
}
return gbean;
}
public static String getAsText(Object value, String type, ClassLoader classLoader) throws InvalidAttributeException {
try {
String attributeStringValue = null;
if (value != null) {
PropertyEditor editor = PropertyEditors.findEditor(type, classLoader);
if (editor == null) {
throw new InvalidAttributeException("Unable to format attribute of type " + type + "; no editor found");
}
editor.setValue(value);
attributeStringValue = editor.getAsText();
}
return attributeStringValue;
} catch (ClassNotFoundException e) {
//todo: use the Configuration's ClassLoader to load the attribute, if this ever becomes an issue
throw (InvalidAttributeException)new InvalidAttributeException("Unable to store attribute type " + type).initCause(e);
}
}
}
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