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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.tuscany.extension.script;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import org.apache.tuscany.spi.ObjectCreationException;
import org.apache.tuscany.spi.ObjectFactory;
import org.apache.tuscany.spi.component.InstanceWrapper;
import org.apache.tuscany.spi.component.TargetResolutionException;
import org.apache.tuscany.spi.component.WorkContext;
import org.apache.tuscany.spi.extension.AtomicComponentExtension;
import org.apache.tuscany.spi.model.Operation;
import org.apache.tuscany.spi.model.physical.PhysicalOperationDefinition;
import org.apache.tuscany.spi.wire.ProxyService;
import org.apache.tuscany.spi.wire.TargetInvoker;
import org.apache.tuscany.spi.wire.Wire;
public class ScriptComponent extends AtomicComponentExtension {
private ScriptImplementation impl;
protected Map<String, List<Wire>> wires = new HashMap<String, List<Wire>>();
protected ScriptComponent(URI name,
ScriptImplementation implementation,
ProxyService proxyService,
WorkContext workContext,
URI groupId,
int initLevel) {
super(name, proxyService, workContext, groupId, initLevel);
impl = implementation;
}
public TargetInvoker createTargetInvoker(String targetName, Operation operation) {
return new ScriptInvoker(operation.getName(), this, scopeContainer, workContext);
}
@SuppressWarnings("unchecked")
public InstanceWrapper<?> createInstanceWrapper() throws ObjectCreationException {
try {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); // TODO: classloader?
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByExtension(impl.getScriptLanguage());
if (engine == null) {
throw new ObjectCreationException("no script engine found for language: " + impl.getScriptLanguage());
}
Reader reader;
if (impl.getInlineSrc() == null) {
URL url = impl.getClassLoader().getResource(impl.getScriptName());
reader = new InputStreamReader(url.openStream());
} else {
reader = new StringReader(impl.getInlineSrc());
}
engine.eval(reader);
return new InstanceWrapperBase(engine);
} catch (ScriptException e) {
throw new ObjectCreationException(e);
} catch (IOException e) {
throw new ObjectCreationException(e);
}
}
// TODO: move all the rest to SPI extension
@Deprecated
public Object createInstance() throws ObjectCreationException {
throw new UnsupportedOperationException();
}
public Object getAssociatedTargetInstance() throws TargetResolutionException {
// TODO Auto-generated method stub
return null;
}
public Object getTargetInstance() throws TargetResolutionException {
// TODO Auto-generated method stub
return null;
}
public void attachCallbackWire(Wire wire) {
// TODO Auto-generated method stub
}
public void attachWire(Wire wire) {
assert wire.getSourceUri().getFragment() != null;
String referenceName = wire.getSourceUri().getFragment();
List<Wire> wireList = wires.get(referenceName);
if (wireList == null) {
wireList = new ArrayList<Wire>();
wires.put(referenceName, wireList);
}
wireList.add(wire);
// Member member = referenceSites.get(referenceName);
// if (member != null) {
// injectors.add(createInjector(member, wire));
// }
// // cycle through constructor param names as well
// for (int i = 0; i < constructorParamNames.size(); i++) {
// if (referenceName.equals(constructorParamNames.get(i))) {
// ObjectFactory[] initializerFactories = instanceFactory.getInitializerFactories();
// initializerFactories[i] = createWireFactory(constructorParamTypes.get(i), wire);
// break;
// }
// }
// //TODO error if ref not set on constructor or ref site
}
public void attachWires(List<Wire> attachWires) {
assert attachWires.size() > 0;
assert attachWires.get(0).getSourceUri().getFragment() != null;
String referenceName = attachWires.get(0).getSourceUri().getFragment();
List<Wire> wireList = wires.get(referenceName);
if (wireList == null) {
wireList = new ArrayList<Wire>();
wires.put(referenceName, wireList);
}
wireList.addAll(attachWires);
// Member member = referenceSites.get(referenceName);
// if (member == null) {
// if (constructorParamNames.contains(referenceName)) {
// // injected on the constructor
// throw new UnsupportedOperationException();
// } else {
// throw new NoAccessorException(referenceName);
// }
// }
//
// Class<?> type = attachWires.get(0).getSourceContract().getInterfaceClass();
// if (type == null) {
// throw new NoMultiplicityTypeException("Java interface must be specified for multiplicity", referenceName);
// }
// injectors.add(createMultiplicityInjector(member, type, wireList));
}
public List<Wire> getWires(String name) {
return wires.get(name);
}
public TargetInvoker createTargetInvoker(String targetName, PhysicalOperationDefinition operation) {
throw new UnsupportedOperationException();
}
protected <B> ObjectFactory<B> createWireFactory(Class<B> interfaze, Wire wire) {
return new WireObjectFactory<B>(interfaze, wire, proxyService);
}
}
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