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package com.c2kernel.process.module;
import java.io.StringReader;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Properties;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.InputSource;
import com.c2kernel.common.CannotManageException;
import com.c2kernel.common.ObjectAlreadyExistsException;
import com.c2kernel.common.ObjectCannotBeUpdated;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.entity.proxy.ItemProxy;
import com.c2kernel.lifecycle.instance.predefined.entitycreation.NewAgent;
import com.c2kernel.lifecycle.instance.predefined.entitycreation.NewItem;
import com.c2kernel.lookup.DomainPath;
import com.c2kernel.process.Bootstrap;
import com.c2kernel.process.Gateway;
import com.c2kernel.scripting.ErrorInfo;
import com.c2kernel.scripting.ScriptingEngineException;
import com.c2kernel.utils.Logger;
import com.c2kernel.utils.Resource;
public class Module {
public String ns, name;
public ModuleInfo info;
public String resURL;
public ModuleImports imports = new ModuleImports();
public ArrayList<ModuleConfig> config = new ArrayList<ModuleConfig>();
public ArrayList<ModuleScript> scripts = new ArrayList<ModuleScript>();
private static DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
private DocumentBuilder parser;
private Document moduleDOM;
static {
dbf.setValidating(false);
dbf.setNamespaceAware(false);
}
public Module() {
super();
}
public Module(String moduleXML) throws ModuleException {
try {
parser = dbf.newDocumentBuilder();
moduleDOM = parser.parse(new InputSource(new StringReader(moduleXML)));
} catch (Exception e) {
Logger.error(e);
throw new ModuleException("Could not process modules. XML Parser exception");
}
Element root = (Element)moduleDOM.getElementsByTagName("CristalModule").item(0);
// Get module metadata
ns = root.getAttribute("ns");
name = root.getAttribute("name");
Element infoElem = (Element)moduleDOM.getElementsByTagName("Info").item(0);
info = new ModuleInfo();
info.desc = ((Text)infoElem.getElementsByTagName("Description").item(0).getFirstChild()).getData();
info.version = ((Text)infoElem.getElementsByTagName("Version").item(0).getFirstChild()).getData();
NodeList nl = infoElem.getElementsByTagName("Dependency");
for (int i=0; i<nl.getLength();i++)
info.dependency.add(((Text)nl.item(i).getFirstChild()).getData());
// register resource URL
nl = root.getElementsByTagName("ResourceURL");
if (nl.getLength()>0) {
resURL = ((Text)nl.item(0).getFirstChild()).getData();
Resource.addModuleBaseURL(ns, resURL);
}
// Get config properties
nl = root.getElementsByTagName("Config");
for (int i=0; i<nl.getLength();i++) {
Element confElement = (Element)nl.item(i);
String target = confElement.getAttribute("target");
String name = confElement.getAttribute("name");
String value = ((Text)confElement.getFirstChild()).getData();
config.add(new ModuleConfig(name, value, target));
}
// find scripts
nl = root.getElementsByTagName("Script");
for (int i=0; i<nl.getLength();i++) {
Element confElement = (Element)nl.item(i);
String target = confElement.getAttribute("target");
String event = confElement.getAttribute("event");
String lang = confElement.getAttribute("lang");
scripts.add(new ModuleScript(target, event, lang, ((Text)confElement.getFirstChild()).getData()));
}
// Get imports
nl = moduleDOM.getElementsByTagName("Imports");
if (nl.getLength()>0) {
Element impElem = (Element)nl.item(0);
nl = impElem.getChildNodes();
for (int i=0; i<nl.getLength();i++) {
if (!(nl.item(i) instanceof Element)) continue;
Element imp = (Element)nl.item(i);
ModuleImport newImp;
String type = imp.getTagName();
if (type.equals("Resource")) {
ModuleResource newRes = new ModuleResource(imp);
newImp = newRes;
}
else if (type.equals("Item")) {
NewItem newItem = new NewItem(ns, imp);
newImp = newItem;
}
else if (type.equals("Agent")) {
NewAgent newAgent = new NewAgent(imp);
newImp = newAgent;
}
else {
Logger.warning("Unknown import type "+type);
continue;
}
newImp.name = imp.getAttribute("name");
imports.list.add(newImp);
Logger.msg(8, "Found import "+imports.list.size()+"- "+newImp.name+": "+newImp.getClass().getSimpleName());
}
}
}
public static com.c2kernel.property.Property newProperty(Element p) {
return new com.c2kernel.property.Property(p.getAttribute("name"), ((Text)p.getFirstChild()).getData());
}
public void runScript(String event, boolean isServer) throws ScriptingEngineException {
for (ModuleScript script : scripts) {
if (script.shouldRun(event, isServer)) {
Object result = script.getScript().execute();
if (result instanceof ErrorInfo) {
ErrorInfo error = (ErrorInfo) result;
Logger.error(error.getErrors());
if (error.getFatal())
throw new ScriptingEngineException("Fatal Script Error");
}
else if (result != null)
Logger.msg(result.toString());
}
}
}
public void importAll(ItemProxy serverEntity) throws ObjectCannotBeUpdated, ObjectNotFoundException, CannotManageException, ObjectAlreadyExistsException, NoSuchAlgorithmException {
for (ModuleImport thisImp : imports.list) {
Logger.msg(5, "Importing "+thisImp.name+" "+thisImp.getClass().getSimpleName());
if (thisImp instanceof ModuleResource) {
ModuleResource thisRes = (ModuleResource)thisImp;
try {
Bootstrap.verifyResource(ns, thisRes.name, thisRes.resourceType, Resource.getTextResource(ns, thisRes.resourceLocation));
} catch (Exception ex) {
Logger.error(ex);
}
}
else if (thisImp instanceof NewItem) {
NewItem thisItem = (NewItem)thisImp;
thisItem.ns=ns;
try {
new DomainPath(new DomainPath(thisItem.initialPath), thisItem.name).getEntity();
Logger.msg(3, "Module.importAll() - Item '"+thisItem.name+"' found.");
continue;
} catch (ObjectNotFoundException ex) { }
thisItem.create(Gateway.getLDAPLookup().getRoleManager().getAgentPath("system").getSysKey());
}
else if (thisImp instanceof NewAgent) {
NewAgent thisAgent = (NewAgent)thisImp;
try {
Gateway.getLDAPLookup().getRoleManager().getAgentPath(thisAgent.name);
Logger.msg(3, "Module.importAll() - User '"+thisAgent.name+"' found.");
continue;
} catch (ObjectNotFoundException ex) { }
Logger.msg("Module.importAll() - User '"+thisAgent.name+"' not found. Creating.");
thisAgent.create(Gateway.getLDAPLookup().getRoleManager().getAgentPath("system").getSysKey());
}
}
}
public Properties getProperties(boolean isServer) {
Properties props = new Properties();
for (ModuleConfig thisProp : config) {
if (thisProp.include(isServer))
props.put(thisProp.name, thisProp.value);
}
return props;
}
public String getNs() {
return ns;
}
public String getName() {
return name;
}
public String getDesc() {
return info.desc;
}
public String getVersion() {
return info.version;
}
public String getResURL() {
return resURL;
}
public ArrayList<String> getDependencies() {
return info.dependency;
}
public boolean hasDependency(String dep) {
return info.dependency.contains(dep);
}
}
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