/**
* 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.camel.component.jclouds;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import javax.xml.transform.stream.StreamSource;
import com.google.common.io.ByteStreams;
import com.google.common.io.InputSupplier;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.apache.camel.FallbackConverter;
import org.apache.camel.TypeConverter;
import org.apache.camel.component.file.GenericFile;
import org.apache.camel.converter.stream.CachedOutputStream;
import org.apache.camel.converter.stream.StreamSourceCache;
import org.apache.camel.spi.TypeConverterRegistry;
import org.jclouds.io.Payload;
import org.jclouds.io.payloads.ByteArrayPayload;
import org.jclouds.io.payloads.FilePayload;
import org.jclouds.io.payloads.InputStreamPayload;
import org.jclouds.io.payloads.StringPayload;
@Converter
public final class JcloudsPayloadConverter {
private JcloudsPayloadConverter() {
//Utility Class
}
@Converter
public static Payload toPayload(byte[] bytes) {
return new ByteArrayPayload(bytes);
}
@Converter
public static Payload toPayload(String str) {
return new StringPayload(str);
}
@Converter
public static Payload toPayload(File file) {
return new FilePayload(file);
}
@Converter
public static Payload toPayload(InputStream is, Exchange exchange) throws IOException {
if (is.markSupported()) {
InputStreamPayload payload = new InputStreamPayload(is);
long contentLength = ByteStreams.length(payload);
is.reset();
payload.getContentMetadata().setContentLength(contentLength);
return payload;
} else {
CachedOutputStream cos = new CachedOutputStream(exchange);
return toPayload(cos.getWrappedInputStream(), exchange);
}
}
@Converter
public static Payload toPayload(StreamSource source, Exchange exchange) throws IOException {
return toPayload(new StreamSourceCache(source, exchange));
}
@Converter
public static Payload toPayload(final StreamSourceCache cache) throws IOException {
long contentLength = ByteStreams.length(new InputSupplier<InputStream>() {
@Override
public InputStream getInput() throws IOException {
return cache.getInputStream();
}
});
cache.reset();
InputStreamPayload payload = new InputStreamPayload(cache.getInputStream());
payload.getContentMetadata().setContentLength(contentLength);
return payload;
}
@FallbackConverter
@SuppressWarnings("unchecked")
public static <T extends Payload> T convertTo(Class<T> type, Exchange exchange, Object value, TypeConverterRegistry registry) throws IOException {
Class<?> sourceType = value.getClass();
if (GenericFile.class.isAssignableFrom(sourceType)) {
GenericFile<?> genericFile = (GenericFile<?>) value;
if (genericFile.getFile() != null) {
Class<?> genericFileType = genericFile.getFile().getClass();
TypeConverter converter = registry.lookup(Payload.class, genericFileType);
if (converter != null) {
return (T) converter.convertTo(Payload.class, genericFile.getFile());
}
}
}
return null;
}
}