| /** |
| * 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.jetty; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Message; |
| import org.apache.camel.RuntimeCamelException; |
| import org.apache.camel.http.common.HttpConstants; |
| import org.apache.camel.http.common.HttpHeaderFilterStrategy; |
| import org.apache.camel.http.common.HttpHelper; |
| import org.apache.camel.http.common.HttpOperationFailedException; |
| import org.apache.camel.http.common.HttpProtocolHeaderFilterStrategy; |
| import org.apache.camel.spi.HeaderFilterStrategy; |
| import org.apache.camel.util.IOHelper; |
| import org.apache.camel.util.MessageHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * @version |
| */ |
| public class DefaultJettyHttpBinding implements JettyHttpBinding { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(DefaultJettyHttpBinding.class); |
| private HeaderFilterStrategy headerFilterStrategy = new HttpHeaderFilterStrategy(); |
| private HeaderFilterStrategy httpProtocolHeaderFilterStrategy = new HttpProtocolHeaderFilterStrategy(); |
| private boolean throwExceptionOnFailure; |
| private boolean transferException; |
| private boolean allowJavaSerializedObject; |
| private String okStatusCodeRange; |
| |
| public DefaultJettyHttpBinding() { |
| } |
| |
| public void populateResponse(Exchange exchange, JettyContentExchange httpExchange) throws Exception { |
| int responseCode = httpExchange.getResponseStatus(); |
| |
| LOG.debug("HTTP responseCode: {}", responseCode); |
| |
| Message in = exchange.getIn(); |
| if (!isThrowExceptionOnFailure()) { |
| // if we do not use failed exception then populate response for all response codes |
| populateResponse(exchange, httpExchange, in, getHeaderFilterStrategy(), responseCode); |
| } else { |
| boolean ok = HttpHelper.isStatusCodeOk(responseCode, okStatusCodeRange); |
| if (ok) { |
| // only populate response for OK response |
| populateResponse(exchange, httpExchange, in, getHeaderFilterStrategy(), responseCode); |
| } else { |
| // operation failed so populate exception to throw |
| Exception ex = populateHttpOperationFailedException(exchange, httpExchange, responseCode); |
| if (ex != null) { |
| throw ex; |
| } else { |
| populateResponse(exchange, httpExchange, in, getHeaderFilterStrategy(), responseCode); |
| } |
| } |
| } |
| } |
| |
| public HeaderFilterStrategy getHeaderFilterStrategy() { |
| return headerFilterStrategy; |
| } |
| |
| public void setHeaderFilterStrategy(HeaderFilterStrategy headerFilterStrategy) { |
| this.headerFilterStrategy = headerFilterStrategy; |
| } |
| |
| public boolean isThrowExceptionOnFailure() { |
| return throwExceptionOnFailure; |
| } |
| |
| public void setThrowExceptionOnFailure(boolean throwExceptionOnFailure) { |
| this.throwExceptionOnFailure = throwExceptionOnFailure; |
| } |
| |
| public boolean isTransferException() { |
| return transferException; |
| } |
| |
| public void setTransferException(boolean transferException) { |
| this.transferException = transferException; |
| } |
| |
| public boolean isAllowJavaSerializedObject() { |
| return allowJavaSerializedObject; |
| } |
| |
| public void setAllowJavaSerializedObject(boolean allowJavaSerializedObject) { |
| this.allowJavaSerializedObject = allowJavaSerializedObject; |
| } |
| |
| public String getOkStatusCodeRange() { |
| return okStatusCodeRange; |
| } |
| |
| public void setOkStatusCodeRange(String okStatusCodeRange) { |
| this.okStatusCodeRange = okStatusCodeRange; |
| } |
| |
| protected void populateResponse(Exchange exchange, JettyContentExchange httpExchange, |
| Message in, HeaderFilterStrategy strategy, int responseCode) throws IOException { |
| Message answer = exchange.getOut(); |
| |
| answer.setHeader(Exchange.HTTP_RESPONSE_CODE, responseCode); |
| |
| // must use response fields to get the http headers as |
| // httpExchange.getHeaders() does not work well with multi valued headers |
| Map<String, Collection<String>> headers = httpExchange.getResponseHeaders(); |
| for (Map.Entry<String, Collection<String>> ent : headers.entrySet()) { |
| String name = ent.getKey(); |
| Collection<String> values = ent.getValue(); |
| for (String value : values) { |
| if (name.toLowerCase().equals("content-type")) { |
| name = Exchange.CONTENT_TYPE; |
| exchange.setProperty(Exchange.CHARSET_NAME, IOHelper.getCharsetNameFromContentType(value)); |
| } |
| if (strategy != null && !strategy.applyFilterToExternalHeaders(name, value, exchange)) { |
| HttpHelper.appendHeader(answer.getHeaders(), name, value); |
| } |
| } |
| } |
| |
| // preserve headers from in by copying any non existing headers |
| // to avoid overriding existing headers with old values |
| // We also need to apply the httpProtocolHeaderFilterStrategy to filter the http protocol header |
| MessageHelper.copyHeaders(exchange.getIn(), answer, httpProtocolHeaderFilterStrategy, false); |
| |
| // extract body after headers has been set as we want to ensure content-type from Jetty HttpExchange |
| // has been populated first |
| answer.setBody(extractResponseBody(exchange, httpExchange)); |
| } |
| |
| protected Exception populateHttpOperationFailedException(Exchange exchange, JettyContentExchange httpExchange, |
| int responseCode) throws IOException { |
| HttpOperationFailedException answer; |
| String uri = httpExchange.getUrl(); |
| Map<String, String> headers = getSimpleMap(httpExchange.getResponseHeaders()); |
| Object responseBody = extractResponseBody(exchange, httpExchange); |
| |
| if (transferException && responseBody != null && responseBody instanceof Exception) { |
| // if the response was a serialized exception then use that |
| return (Exception) responseBody; |
| } |
| |
| // make a defensive copy of the response body in the exception so its detached from the cache |
| String copy = null; |
| if (responseBody != null) { |
| copy = exchange.getContext().getTypeConverter().convertTo(String.class, exchange, responseBody); |
| } |
| |
| if (responseCode >= 300 && responseCode < 400) { |
| Collection<String> loc = httpExchange.getResponseHeaders().get("location"); |
| if (loc != null && !loc.isEmpty()) { |
| String locationHeader = loc.iterator().next(); |
| answer = new HttpOperationFailedException(uri, responseCode, null, locationHeader, headers, copy); |
| } else { |
| // no redirect location |
| answer = new HttpOperationFailedException(uri, responseCode, null, null, headers, copy); |
| } |
| } else { |
| // internal server error (error code 500) |
| answer = new HttpOperationFailedException(uri, responseCode, null, null, headers, copy); |
| } |
| |
| return answer; |
| } |
| |
| protected Object extractResponseBody(Exchange exchange, JettyContentExchange httpExchange) throws IOException { |
| Map<String, String> headers = getSimpleMap(httpExchange.getResponseHeaders()); |
| String contentType = headers.get(Exchange.CONTENT_TYPE); |
| |
| // if content type is serialized java object, then de-serialize it to a Java object |
| if (contentType != null && HttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT.equals(contentType)) { |
| // only deserialize java if allowed |
| if (isAllowJavaSerializedObject() || isTransferException()) { |
| try { |
| InputStream is = exchange.getContext().getTypeConverter().mandatoryConvertTo(InputStream.class, httpExchange.getResponseContentBytes()); |
| return HttpHelper.deserializeJavaObjectFromStream(is, exchange.getContext()); |
| } catch (Exception e) { |
| throw new RuntimeCamelException("Cannot deserialize body to Java object", e); |
| } |
| } else { |
| // empty body |
| return null; |
| } |
| } else { |
| // just grab the raw content body |
| return httpExchange.getBody(); |
| } |
| } |
| |
| Map<String, String> getSimpleMap(Map<String, Collection<String>> headers) { |
| Map<String, String> result = new HashMap<String, String>(); |
| for (String key : headers.keySet()) { |
| Collection<String> valueCol = headers.get(key); |
| String value = (valueCol == null) ? null : valueCol.iterator().next(); |
| result.put(key, value); |
| } |
| return result; |
| } |
| } |