/*
* 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.jclouds.vcloud.binders;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.vcloud.reference.VCloudConstants.PROPERTY_VCLOUD_XML_NAMESPACE;
import static org.jclouds.vcloud.reference.VCloudConstants.PROPERTY_VCLOUD_XML_SCHEMA;
import java.util.Map;
import java.util.Properties;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.http.HttpRequest;
import org.jclouds.rest.MapBinder;
import org.jclouds.rest.binders.BindToStringPayload;
import org.jclouds.rest.internal.GeneratedHttpRequest;
import org.jclouds.vcloud.options.CloneOptions;
import com.google.common.base.Throwables;
import com.google.inject.Inject;
import com.jamesmurty.utils.XMLBuilder;
/**
*
* @author Adrian Cole
*
*/
@Singleton
public abstract class BindCloneParamsToXmlPayload<O extends CloneOptions> implements MapBinder {
protected final String ns;
protected final String schema;
private final BindToStringPayload stringBinder;
protected abstract String getRootElement();
protected abstract String getSourceMediaType();
protected abstract Class<O> getOptionClass();
@Inject
public BindCloneParamsToXmlPayload(BindToStringPayload stringBinder,
@Named(PROPERTY_VCLOUD_XML_NAMESPACE) String ns, @Named(PROPERTY_VCLOUD_XML_SCHEMA) String schema) {
this.ns = ns;
this.schema = schema;
this.stringBinder = stringBinder;
}
@Override
public <R extends HttpRequest> R bindToRequest(R request, Map<String, Object> postParams) {
checkArgument(checkNotNull(request, "request") instanceof GeneratedHttpRequest,
"this binder is only valid for GeneratedHttpRequests!");
GeneratedHttpRequest gRequest = (GeneratedHttpRequest) request;
String name = checkNotNull(postParams.get("name"), "name").toString();
String source = checkNotNull(postParams.get("Source"), "Source").toString();
boolean isSourceDelete = Boolean.parseBoolean((String) postParams.get("IsSourceDelete"));
O options = findOptionsInArgsOrNew(gRequest);
return stringBinder.bindToRequest(request, generateXml(name, source, isSourceDelete, options));
}
protected String generateXml(String name, String source, boolean isSourceDelete, O options) {
XMLBuilder rootBuilder = buildRoot(name, options);
addElementsUnderRoot(rootBuilder, source, options, isSourceDelete);
Properties outputProperties = new Properties();
outputProperties.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION, "yes");
try {
return rootBuilder.asString(outputProperties);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
protected void addElementsUnderRoot(XMLBuilder rootBuilder, String source, O options, boolean isSourceDelete) {
if (options.getDescription() != null)
rootBuilder.e("Description").text(options.getDescription());
rootBuilder.e("Source").a("href", source).a("type", getSourceMediaType());
if (isSourceDelete)
rootBuilder.e("IsSourceDelete").t("true");
}
protected XMLBuilder buildRoot(String name, O options) {
try {
return XMLBuilder.create(getRootElement()).a("xmlns", ns).a("xmlns:xsi",
"http://www.w3.org/2001/XMLSchema-instance").a("xsi:schemaLocation", ns + " " + schema).a("name",
name);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
@SuppressWarnings("unchecked")
protected O findOptionsInArgsOrNew(GeneratedHttpRequest gRequest) {
for (Object arg : gRequest.getInvocation().getArgs()) {
if (getOptionClass().isInstance(arg)) {
return (O) arg;
} else if (arg.getClass().isArray()) {
Object[] array = (Object[]) arg;
if (array.length > 0 && getOptionClass().isInstance(array[0]))
return (O) array[0];
}
}
try {
return getOptionClass().newInstance();
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
@Override
public <R extends HttpRequest> R bindToRequest(R request, Object input) {
throw new IllegalStateException("CloneParams is needs parameters");
}
protected String ifNullDefaultTo(String value, String defaultValue) {
return value != null ? value : checkNotNull(defaultValue, "defaultValue");
}
}