| /** |
| * 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.ahc.helper; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.RuntimeExchangeException; |
| import org.apache.camel.component.ahc.AhcEndpoint; |
| import org.apache.camel.converter.IOConverter; |
| import org.apache.camel.util.IOHelper; |
| import org.apache.camel.util.URISupport; |
| |
| /** |
| * |
| */ |
| public final class AhcHelper { |
| |
| private AhcHelper() { |
| // Helper class |
| } |
| |
| /** |
| * Writes the given object as response body to the output stream |
| * |
| * @param stream output stream |
| * @param target object to write |
| * @throws java.io.IOException is thrown if error writing |
| */ |
| public static void writeObjectToStream(OutputStream stream, Object target) throws IOException { |
| ObjectOutputStream oos = new ObjectOutputStream(stream); |
| oos.writeObject(target); |
| oos.flush(); |
| IOHelper.close(oos); |
| } |
| |
| /** |
| * Deserializes the input stream to a Java object |
| * |
| * @param is input stream for the Java object |
| * @return the java object, or <tt>null</tt> if input stream was <tt>null</tt> |
| * @throws ClassNotFoundException is thrown if class not found |
| * @throws IOException can be thrown |
| */ |
| public static Object deserializeJavaObjectFromStream(InputStream is) throws ClassNotFoundException, IOException { |
| if (is == null) { |
| return null; |
| } |
| |
| Object answer = null; |
| ObjectInputStream ois = new ObjectInputStream(is); |
| try { |
| answer = ois.readObject(); |
| } finally { |
| IOHelper.close(ois); |
| } |
| |
| return answer; |
| } |
| |
| public static void setCharsetFromContentType(String contentType, Exchange exchange) { |
| if (contentType != null) { |
| // find the charset and set it to the Exchange |
| int index = contentType.indexOf("charset="); |
| if (index > 0) { |
| String charset = contentType.substring(index + 8); |
| exchange.setProperty(Exchange.CHARSET_NAME, IOHelper.normalizeCharset(charset)); |
| } |
| } |
| } |
| |
| /** |
| * Creates the URL to invoke. |
| * |
| * @param exchange the exchange |
| * @param endpoint the endpoint |
| * @return the URL to invoke |
| * @throws java.net.URISyntaxException is thrown if the URL is invalid |
| * @throws UnsupportedEncodingException |
| */ |
| public static String createURL(Exchange exchange, AhcEndpoint endpoint) throws URISyntaxException, UnsupportedEncodingException { |
| String url = doCreateURL(exchange, endpoint); |
| return URISupport.normalizeUri(url); |
| } |
| |
| private static String doCreateURL(Exchange exchange, AhcEndpoint endpoint) { |
| String uri = null; |
| if (!(endpoint.isBridgeEndpoint())) { |
| uri = exchange.getIn().getHeader(Exchange.HTTP_URI, String.class); |
| } |
| if (uri == null) { |
| uri = endpoint.getHttpUri().toASCIIString(); |
| } |
| |
| // resolve placeholders in uri |
| try { |
| uri = exchange.getContext().resolvePropertyPlaceholders(uri); |
| } catch (Exception e) { |
| throw new RuntimeExchangeException("Cannot resolve property placeholders with uri: " + uri, exchange, e); |
| } |
| |
| // append HTTP_PATH to HTTP_URI if it is provided in the header |
| String path = exchange.getIn().getHeader(Exchange.HTTP_PATH, String.class); |
| if (path != null) { |
| if (path.startsWith("/")) { |
| URI baseURI; |
| String baseURIString = exchange.getIn().getHeader(Exchange.HTTP_BASE_URI, String.class); |
| try { |
| if (baseURIString == null) { |
| if (exchange.getFromEndpoint() != null) { |
| baseURIString = exchange.getFromEndpoint().getEndpointUri(); |
| } else { |
| // will set a default one for it |
| baseURIString = "/"; |
| } |
| } |
| baseURI = new URI(baseURIString); |
| String basePath = baseURI.getRawPath(); |
| if (path.startsWith(basePath)) { |
| path = path.substring(basePath.length()); |
| if (path.startsWith("/")) { |
| path = path.substring(1); |
| } |
| } else { |
| throw new RuntimeExchangeException("Cannot analyze the Exchange.HTTP_PATH header, due to: cannot find the right HTTP_BASE_URI", exchange); |
| } |
| } catch (Throwable t) { |
| throw new RuntimeExchangeException("Cannot analyze the Exchange.HTTP_PATH header, due to: " + t.getMessage(), exchange, t); |
| } |
| } |
| if (path.length() > 0) { |
| // make sure that there is exactly one "/" between HTTP_URI and |
| // HTTP_PATH |
| if (!uri.endsWith("/")) { |
| uri = uri + "/"; |
| } |
| uri = uri.concat(path); |
| } |
| } |
| return uri; |
| } |
| } |