private MethodInfo chooseMethodWithMatchingParameters(
Exchange exchange, String parameters, Collection<MethodInfo> operationList)
throws AmbiguousMethodCallException {
// we have hardcoded parameters so need to match that with the given operations
Iterator<?> it = ObjectHelper.createIterator(parameters);
int count = 0;
while (it.hasNext()) {
it.next();
count++;
}
List<MethodInfo> operations = new ArrayList<MethodInfo>();
for (MethodInfo info : operationList) {
if (info.getParameters().size() == count) {
operations.add(info);
}
}
if (operations.isEmpty()) {
return null;
} else if (operations.size() == 1) {
return operations.get(0);
}
// okay we still got multiple operations, so need to match the best one
List<MethodInfo> candidates = new ArrayList<MethodInfo>();
for (MethodInfo info : operations) {
it = ObjectHelper.createIterator(parameters);
int index = 0;
boolean matches = true;
while (it.hasNext()) {
String parameter = (String) it.next();
Class<?> parameterType = BeanHelper.getValidParameterType(parameter);
Class<?> expectedType = info.getParameters().get(index).getType();
if (parameterType != null && expectedType != null) {
if (!parameterType.isAssignableFrom(expectedType)) {
matches = false;
break;
}
}
index++;
}
if (matches) {
candidates.add(info);
}
}
if (candidates.size() > 1) {
MethodInfo answer = getSingleCovariantMethod(candidates);
if (answer == null) {
throw new AmbiguousMethodCallException(exchange, candidates);
}
return answer;
}
return candidates.size() == 1 ? candidates.get(0) : null;
}
@Override
public void populateCamelHeaders(
HttpResponse response,
Map<String, Object> headers,
Exchange exchange,
NettyHttpConfiguration configuration)
throws Exception {
LOG.trace("populateCamelHeaders: {}", response);
headers.put(Exchange.HTTP_RESPONSE_CODE, response.getStatus().getCode());
headers.put(Exchange.HTTP_RESPONSE_TEXT, response.getStatus().getReasonPhrase());
for (String name : response.headers().names()) {
// mapping the content-type
if (name.toLowerCase().equals("content-type")) {
name = Exchange.CONTENT_TYPE;
}
// add the headers one by one, and use the header filter strategy
List<String> values = response.headers().getAll(name);
Iterator<?> it = ObjectHelper.createIterator(values);
while (it.hasNext()) {
Object extracted = it.next();
LOG.trace("HTTP-header: {}", extracted);
if (headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToExternalHeaders(name, extracted, exchange)) {
NettyHttpHelper.appendHeader(headers, name, extracted);
}
}
}
}
/**
* Copied from CamelBlueprintHelper since there it is also a private method.
*
* <p>Gets the bundle descriptors as {@link URL} resources.
*
* @param descriptors the bundle descriptors, can be separated by comma
* @return the bundle descriptors.
* @throws FileNotFoundException is thrown if a bundle descriptor cannot be found
*/
private static Collection<URL> getBlueprintDescriptors(String descriptors)
throws FileNotFoundException, MalformedURLException {
List<URL> answer = new ArrayList<URL>();
String descriptor = descriptors;
if (descriptor != null) {
// there may be more resources separated by comma
Iterator<Object> it = ObjectHelper.createIterator(descriptor);
while (it.hasNext()) {
String s = (String) it.next();
LOG.trace("Resource descriptor: {}", s);
// remove leading / to be able to load resource from the classpath
s = FileUtil.stripLeadingSeparator(s);
// if there is wildcards for *.xml then we need to find the urls from the package
if (s.endsWith("*.xml")) {
String packageName = s.substring(0, s.length() - 5);
// remove trailing / to be able to load resource from the classpath
Enumeration<URL> urls = ObjectHelper.loadResourcesAsURL(packageName);
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
File dir = new File(url.getFile());
if (dir.isDirectory()) {
File[] files = dir.listFiles();
if (files != null) {
for (File file : files) {
if (file.isFile() && file.exists() && file.getName().endsWith(".xml")) {
String name = packageName + file.getName();
LOG.debug("Resolving resource: {}", name);
URL xmlUrl = ObjectHelper.loadResourceAsURL(name);
if (xmlUrl != null) {
answer.add(xmlUrl);
}
}
}
}
}
}
} else {
LOG.debug("Resolving resource: {}", s);
URL url = ResourceHelper.resolveMandatoryResourceAsUrl(RESOLVER, s);
if (url == null) {
throw new FileNotFoundException("Resource " + s + " not found");
}
answer.add(url);
}
}
} else {
throw new IllegalArgumentException(
"No bundle descriptor configured. Override getBlueprintDescriptor() or getBlueprintDescriptors() method");
}
if (answer.isEmpty()) {
throw new IllegalArgumentException(
"Cannot find any resources in classpath from descriptor " + descriptors);
}
return answer;
}
@SuppressWarnings("unchecked")
public <T> T evaluate(Exchange exchange, Class<T> type) {
Object body = exchange.getIn().getBody();
boolean multiParameterArray = false;
if (exchange.getIn().getHeader(Exchange.BEAN_MULTI_PARAMETER_ARRAY) != null) {
multiParameterArray =
exchange.getIn().getHeader(Exchange.BEAN_MULTI_PARAMETER_ARRAY, Boolean.class);
if (multiParameterArray) {
// Just change the message body to an Object array
if (!(body instanceof Object[])) {
body = exchange.getIn().getBody(Object[].class);
}
}
}
// if there was an explicit method name to invoke, then we should support using
// any provided parameter values in the method name
String methodName = exchange.getIn().getHeader(Exchange.BEAN_METHOD_NAME, "", String.class);
// the parameter values is between the parenthesis
String methodParameters = ObjectHelper.betweenOuterPair(methodName, '(', ')');
// use an iterator to walk the parameter values
Iterator<?> it = null;
if (methodParameters != null) {
// split the parameters safely separated by comma, but beware that we can have
// quoted parameters which contains comma as well, so do a safe quote split
String[] parameters = StringQuoteHelper.splitSafeQuote(methodParameters, ',', true);
it = ObjectHelper.createIterator(parameters, ",", true);
}
// remove headers as they should not be propagated
// we need to do this before the expressions gets evaluated as it may contain
// a @Bean expression which would by mistake read these headers. So the headers
// must be removed at this point of time
exchange.getIn().removeHeader(Exchange.BEAN_MULTI_PARAMETER_ARRAY);
exchange.getIn().removeHeader(Exchange.BEAN_METHOD_NAME);
Object[] answer = evaluateParameterExpressions(exchange, body, multiParameterArray, it);
return (T) answer;
}
@Override
public void populateCamelHeaders(
HttpRequest request,
Map<String, Object> headers,
Exchange exchange,
NettyHttpConfiguration configuration)
throws Exception {
LOG.trace("populateCamelHeaders: {}", request);
// NOTE: these headers is applied using the same logic as camel-http/camel-jetty to be
// consistent
headers.put(Exchange.HTTP_METHOD, request.getMethod().getName());
// strip query parameters from the uri
String s = request.getUri();
if (s.contains("?")) {
s = ObjectHelper.before(s, "?");
}
// we want the full path for the url, as the client may provide the url in the HTTP headers as
// absolute or relative, eg
// /foo
// http://servername/foo
String http = configuration.isSsl() ? "https://" : "http://";
if (!s.startsWith(http)) {
if (configuration.getPort() != 80) {
s = http + configuration.getHost() + ":" + configuration.getPort() + s;
} else {
s = http + configuration.getHost() + s;
}
}
headers.put(Exchange.HTTP_URL, s);
// uri is without the host and port
URI uri = new URI(request.getUri());
// uri is path and query parameters
headers.put(Exchange.HTTP_URI, uri.getPath());
headers.put(Exchange.HTTP_QUERY, uri.getQuery());
headers.put(Exchange.HTTP_RAW_QUERY, uri.getRawQuery());
// strip the starting endpoint path so the path is relative to the endpoint uri
String path = uri.getPath();
if (configuration.getPath() != null && path.startsWith(configuration.getPath())) {
path = path.substring(configuration.getPath().length());
}
headers.put(Exchange.HTTP_PATH, path);
if (LOG.isTraceEnabled()) {
LOG.trace("HTTP-Method {}", request.getMethod().getName());
LOG.trace("HTTP-Uri {}", request.getUri());
}
for (String name : request.headers().names()) {
// mapping the content-type
if (name.toLowerCase(Locale.US).equals("content-type")) {
name = Exchange.CONTENT_TYPE;
}
if (name.toLowerCase(Locale.US).equals("authorization")) {
String value = request.headers().get(name);
// store a special header that this request was authenticated using HTTP Basic
if (value != null && value.trim().startsWith("Basic")) {
if (headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToExternalHeaders(
NettyHttpConstants.HTTP_AUTHENTICATION, "Basic", exchange)) {
NettyHttpHelper.appendHeader(headers, NettyHttpConstants.HTTP_AUTHENTICATION, "Basic");
}
}
}
// add the headers one by one, and use the header filter strategy
List<String> values = request.headers().getAll(name);
Iterator<?> it = ObjectHelper.createIterator(values);
while (it.hasNext()) {
Object extracted = it.next();
Object decoded = shouldUrlDecodeHeader(configuration, name, extracted, "UTF-8");
LOG.trace("HTTP-header: {}", extracted);
if (headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToExternalHeaders(name, decoded, exchange)) {
NettyHttpHelper.appendHeader(headers, name, decoded);
}
}
}
// add uri parameters as headers to the Camel message
if (request.getUri().contains("?")) {
String query = ObjectHelper.after(request.getUri(), "?");
Map<String, Object> uriParameters = URISupport.parseQuery(query, false, true);
for (Map.Entry<String, Object> entry : uriParameters.entrySet()) {
String name = entry.getKey();
Object values = entry.getValue();
Iterator<?> it = ObjectHelper.createIterator(values);
while (it.hasNext()) {
Object extracted = it.next();
Object decoded = shouldUrlDecodeHeader(configuration, name, extracted, "UTF-8");
LOG.trace("URI-Parameter: {}", extracted);
if (headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToExternalHeaders(name, decoded, exchange)) {
NettyHttpHelper.appendHeader(headers, name, decoded);
}
}
}
}
// if body is application/x-www-form-urlencoded then extract the body as query string and append
// as headers
// if it is a bridgeEndpoint we need to skip this part of work
if (request.getMethod().getName().equals("POST")
&& request.headers().get(Exchange.CONTENT_TYPE) != null
&& request
.headers()
.get(Exchange.CONTENT_TYPE)
.startsWith(NettyHttpConstants.CONTENT_TYPE_WWW_FORM_URLENCODED)
&& !configuration.isBridgeEndpoint()) {
String charset = "UTF-8";
// Push POST form params into the headers to retain compatibility with DefaultHttpBinding
String body = request.getContent().toString(Charset.forName(charset));
if (ObjectHelper.isNotEmpty(body)) {
for (String param : body.split("&")) {
String[] pair = param.split("=", 2);
if (pair.length == 2) {
String name = shouldUrlDecodeHeader(configuration, "", pair[0], charset);
String value = shouldUrlDecodeHeader(configuration, name, pair[1], charset);
if (headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToExternalHeaders(name, value, exchange)) {
NettyHttpHelper.appendHeader(headers, name, value);
}
} else {
throw new IllegalArgumentException(
"Invalid parameter, expected to be a pair but was " + param);
}
}
}
}
}
@Override
public HttpRequest toNettyRequest(
Message message, String uri, NettyHttpConfiguration configuration) throws Exception {
LOG.trace("toNettyRequest: {}", message);
// the message body may already be a Netty HTTP response
if (message.getBody() instanceof HttpRequest) {
return (HttpRequest) message.getBody();
}
// just assume GET for now, we will later change that to the actual method to use
HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, uri);
TypeConverter tc = message.getExchange().getContext().getTypeConverter();
// if we bridge endpoint then we need to skip matching headers with the HTTP_QUERY to avoid
// sending
// duplicated headers to the receiver, so use this skipRequestHeaders as the list of headers to
// skip
Map<String, Object> skipRequestHeaders = null;
if (configuration.isBridgeEndpoint()) {
String queryString = message.getHeader(Exchange.HTTP_QUERY, String.class);
if (queryString != null) {
skipRequestHeaders = URISupport.parseQuery(queryString, false, true);
}
// Need to remove the Host key as it should be not used
message.getHeaders().remove("host");
}
// append headers
// must use entrySet to ensure case of keys is preserved
for (Map.Entry<String, Object> entry : message.getHeaders().entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
// we should not add headers for the parameters in the uri if we bridge the endpoint
// as then we would duplicate headers on both the endpoint uri, and in HTTP headers as well
if (skipRequestHeaders != null && skipRequestHeaders.containsKey(key)) {
continue;
}
// use an iterator as there can be multiple values. (must not use a delimiter)
final Iterator<?> it = ObjectHelper.createIterator(value, null, true);
while (it.hasNext()) {
String headerValue = tc.convertTo(String.class, it.next());
if (headerValue != null
&& headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToCamelHeaders(
key, headerValue, message.getExchange())) {
LOG.trace("HTTP-Header: {}={}", key, headerValue);
request.headers().add(key, headerValue);
}
}
}
Object body = message.getBody();
if (body != null) {
// support bodies as native Netty
ChannelBuffer buffer;
if (body instanceof ChannelBuffer) {
buffer = (ChannelBuffer) body;
} else {
// try to convert to buffer first
buffer = message.getBody(ChannelBuffer.class);
if (buffer == null) {
// fallback to byte array as last resort
byte[] data = message.getMandatoryBody(byte[].class);
buffer = ChannelBuffers.copiedBuffer(data);
}
}
if (buffer != null) {
request.setContent(buffer);
int len = buffer.readableBytes();
// set content-length
request.headers().set(HttpHeaders.Names.CONTENT_LENGTH, len);
LOG.trace("Content-Length: {}", len);
} else {
// we do not support this kind of body
throw new NoTypeConversionAvailableException(body, ChannelBuffer.class);
}
}
// update HTTP method accordingly as we know if we have a body or not
HttpMethod method = NettyHttpHelper.createMethod(message, body != null);
request.setMethod(method);
// set the content type in the response.
String contentType = MessageHelper.getContentType(message);
if (contentType != null) {
// set content-type
request.headers().set(HttpHeaders.Names.CONTENT_TYPE, contentType);
LOG.trace("Content-Type: {}", contentType);
}
// must include HOST header as required by HTTP 1.1
// use URI as its faster than URL (no DNS lookup)
URI u = new URI(uri);
String host = u.getHost();
request.headers().set(HttpHeaders.Names.HOST, host);
LOG.trace("Host: {}", host);
// configure connection to accordingly to keep alive configuration
// favor using the header from the message
String connection = message.getHeader(HttpHeaders.Names.CONNECTION, String.class);
if (connection == null) {
// fallback and use the keep alive from the configuration
if (configuration.isKeepAlive()) {
connection = HttpHeaders.Values.KEEP_ALIVE;
} else {
connection = HttpHeaders.Values.CLOSE;
}
}
request.headers().set(HttpHeaders.Names.CONNECTION, connection);
LOG.trace("Connection: {}", connection);
return request;
}
@Override
public HttpResponse toNettyResponse(Message message, NettyHttpConfiguration configuration)
throws Exception {
LOG.trace("toNettyResponse: {}", message);
// the message body may already be a Netty HTTP response
if (message.getBody() instanceof HttpResponse) {
return (HttpResponse) message.getBody();
}
// the response code is 200 for OK and 500 for failed
boolean failed = message.getExchange().isFailed();
int defaultCode = failed ? 500 : 200;
int code = message.getHeader(Exchange.HTTP_RESPONSE_CODE, defaultCode, int.class);
HttpResponse response =
new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(code));
LOG.trace("HTTP Status Code: {}", code);
TypeConverter tc = message.getExchange().getContext().getTypeConverter();
// append headers
// must use entrySet to ensure case of keys is preserved
for (Map.Entry<String, Object> entry : message.getHeaders().entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
// use an iterator as there can be multiple values. (must not use a delimiter)
final Iterator<?> it = ObjectHelper.createIterator(value, null);
while (it.hasNext()) {
String headerValue = tc.convertTo(String.class, it.next());
if (headerValue != null
&& headerFilterStrategy != null
&& !headerFilterStrategy.applyFilterToCamelHeaders(
key, headerValue, message.getExchange())) {
LOG.trace("HTTP-Header: {}={}", key, headerValue);
response.headers().add(key, headerValue);
}
}
}
Object body = message.getBody();
Exception cause = message.getExchange().getException();
// support bodies as native Netty
ChannelBuffer buffer;
// if there was an exception then use that as body
if (cause != null) {
if (configuration.isTransferException()) {
// we failed due an exception, and transfer it as java serialized object
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(cause);
oos.flush();
IOHelper.close(oos, bos);
// the body should be the serialized java object of the exception
body = ChannelBuffers.copiedBuffer(bos.toByteArray());
// force content type to be serialized java object
message.setHeader(
Exchange.CONTENT_TYPE, NettyHttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT);
} else {
// we failed due an exception so print it as plain text
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
cause.printStackTrace(pw);
// the body should then be the stacktrace
body = ChannelBuffers.copiedBuffer(sw.toString().getBytes());
// force content type to be text/plain as that is what the stacktrace is
message.setHeader(Exchange.CONTENT_TYPE, "text/plain");
}
// and mark the exception as failure handled, as we handled it by returning it as the response
ExchangeHelper.setFailureHandled(message.getExchange());
}
if (body instanceof ChannelBuffer) {
buffer = (ChannelBuffer) body;
} else {
// try to convert to buffer first
buffer = message.getBody(ChannelBuffer.class);
if (buffer == null) {
// fallback to byte array as last resort
byte[] data = message.getBody(byte[].class);
if (data != null) {
buffer = ChannelBuffers.copiedBuffer(data);
} else {
// and if byte array fails then try String
String str;
if (body != null) {
str = message.getMandatoryBody(String.class);
} else {
str = "";
}
buffer = ChannelBuffers.copiedBuffer(str.getBytes());
}
}
}
if (buffer != null) {
response.setContent(buffer);
// We just need to reset the readerIndex this time
if (buffer.readerIndex() == buffer.writerIndex()) {
buffer.setIndex(0, buffer.writerIndex());
}
// TODO How to enable the chunk transport
int len = buffer.readableBytes();
// set content-length
response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, len);
LOG.trace("Content-Length: {}", len);
}
// set the content type in the response.
String contentType = MessageHelper.getContentType(message);
if (contentType != null) {
// set content-type
response.headers().set(HttpHeaders.Names.CONTENT_TYPE, contentType);
LOG.trace("Content-Type: {}", contentType);
}
// configure connection to accordingly to keep alive configuration
// favor using the header from the message
String connection = message.getHeader(HttpHeaders.Names.CONNECTION, String.class);
// Read the connection header from the exchange property
if (connection == null) {
connection = message.getExchange().getProperty(HttpHeaders.Names.CONNECTION, String.class);
}
if (connection == null) {
// fallback and use the keep alive from the configuration
if (configuration.isKeepAlive()) {
connection = HttpHeaders.Values.KEEP_ALIVE;
} else {
connection = HttpHeaders.Values.CLOSE;
}
}
response.headers().set(HttpHeaders.Names.CONNECTION, connection);
// Just make sure we close the channel when the connection value is close
if (connection.equalsIgnoreCase(HttpHeaders.Values.CLOSE)) {
message.setHeader(NettyConstants.NETTY_CLOSE_CHANNEL_WHEN_COMPLETE, true);
}
LOG.trace("Connection: {}", connection);
return response;
}
private MethodInfo chooseMethodWithMatchingParameters(
Exchange exchange, String parameters, Collection<MethodInfo> operationList)
throws AmbiguousMethodCallException {
// we have hardcoded parameters so need to match that with the given operations
Iterator<?> it = ObjectHelper.createIterator(parameters);
int count = 0;
while (it.hasNext()) {
it.next();
count++;
}
List<MethodInfo> operations = new ArrayList<MethodInfo>();
for (MethodInfo info : operationList) {
if (info.getParameters().size() == count) {
operations.add(info);
}
}
if (operations.isEmpty()) {
return null;
} else if (operations.size() == 1) {
return operations.get(0);
}
// okay we still got multiple operations, so need to match the best one
List<MethodInfo> candidates = new ArrayList<MethodInfo>();
MethodInfo fallbackCandidate = null;
for (MethodInfo info : operations) {
it = ObjectHelper.createIterator(parameters, ",", false);
int index = 0;
boolean matches = true;
while (it.hasNext()) {
String parameter = (String) it.next();
if (parameter != null) {
// must trim
parameter = parameter.trim();
}
Class<?> parameterType = BeanHelper.getValidParameterType(parameter);
Class<?> expectedType = info.getParameters().get(index).getType();
if (parameterType != null && expectedType != null) {
// if its a simple language then we need to evaluate the expression
// so we have the result and can find out what type the parameter actually is
if (StringHelper.hasStartToken(parameter, "simple")) {
LOG.trace(
"Evaluating simple expression for parameter #{}: {} to determine the class type of the parameter",
index,
parameter);
Object out =
getCamelContext()
.resolveLanguage("simple")
.createExpression(parameter)
.evaluate(exchange, Object.class);
if (out != null) {
parameterType = out.getClass();
}
}
// skip java.lang.Object type, when we have multiple possible methods we want to avoid it
// if possible
if (Object.class.equals(expectedType)) {
fallbackCandidate = info;
matches = false;
break;
}
boolean matchingTypes = isParameterMatchingType(parameterType, expectedType);
if (!matchingTypes) {
matches = false;
break;
}
}
index++;
}
if (matches) {
candidates.add(info);
}
}
if (candidates.size() > 1) {
MethodInfo answer = getSingleCovariantMethod(candidates);
if (answer != null) {
return answer;
}
}
return candidates.size() == 1 ? candidates.get(0) : fallbackCandidate;
}
private boolean matchMethod(Method method, String methodName) {
if (methodName == null) {
return true;
}
if (methodName.contains("(") && !methodName.endsWith(")")) {
throw new IllegalArgumentException(
"Name must have both starting and ending parenthesis, was: " + methodName);
}
// do not use qualifier for name matching
String name = methodName;
if (name.contains("(")) {
name = ObjectHelper.before(name, "(");
}
// must match name
if (name != null && !name.equals(method.getName())) {
return false;
}
// is it a method with no parameters
boolean noParameters = methodName.endsWith("()");
if (noParameters) {
return method.getParameterTypes().length == 0;
}
// match qualifier types which is used to select among overloaded methods
String types = ObjectHelper.between(methodName, "(", ")");
if (ObjectHelper.isNotEmpty(types)) {
// we must qualify based on types to match method
String[] parameters = StringQuoteHelper.splitSafeQuote(types, ',');
Iterator<?> it = ObjectHelper.createIterator(parameters);
for (int i = 0; i < method.getParameterTypes().length; i++) {
if (it.hasNext()) {
Class<?> parameterType = method.getParameterTypes()[i];
String qualifyType = (String) it.next();
if (ObjectHelper.isEmpty(qualifyType)) {
continue;
}
// trim the type
qualifyType = qualifyType.trim();
if ("*".equals(qualifyType)) {
// * is a wildcard so we accept and match that parameter type
continue;
}
if (BeanHelper.isValidParameterValue(qualifyType)) {
// its a parameter value, so continue to next parameter
// as we should only check for FQN/type parameters
continue;
}
// if qualify type indeed is a class, then it must be assignable with the parameter type
Boolean assignable =
BeanHelper.isAssignableToExpectedType(
getCamelContext().getClassResolver(), qualifyType, parameterType);
// the method will return null if the qualifyType is not a class
if (assignable != null && !assignable) {
return false;
}
} else {
// there method has more parameters than was specified in the method name qualifiers
return false;
}
}
// if the method has no more types then we can only regard it as matched
// if there are no more qualifiers
if (it.hasNext()) {
return false;
}
}
// the method matched
return true;
}
public void process(Exchange exchange) throws Exception {
// if we bridge endpoint then we need to skip matching headers with the HTTP_QUERY to avoid
// sending
// duplicated headers to the receiver, so use this skipRequestHeaders as the list of headers to
// skip
Map<String, Object> skipRequestHeaders = null;
if (getEndpoint().isBridgeEndpoint()) {
exchange.setProperty(Exchange.SKIP_GZIP_ENCODING, Boolean.TRUE);
String queryString = exchange.getIn().getHeader(Exchange.HTTP_QUERY, String.class);
if (queryString != null) {
skipRequestHeaders = URISupport.parseQuery(queryString);
}
// Need to remove the Host key as it should be not used
exchange.getIn().getHeaders().remove("host");
}
HttpMethod method = createMethod(exchange);
Message in = exchange.getIn();
String httpProtocolVersion = in.getHeader(Exchange.HTTP_PROTOCOL_VERSION, String.class);
if (httpProtocolVersion != null) {
// set the HTTP protocol version
HttpMethodParams params = method.getParams();
params.setVersion(HttpVersion.parse(httpProtocolVersion));
}
HeaderFilterStrategy strategy = getEndpoint().getHeaderFilterStrategy();
// propagate headers as HTTP headers
for (Map.Entry<String, Object> entry : in.getHeaders().entrySet()) {
String key = entry.getKey();
Object headerValue = in.getHeader(key);
if (headerValue != null) {
// use an iterator as there can be multiple values. (must not use a delimiter, and allow
// empty values)
final Iterator<?> it = ObjectHelper.createIterator(headerValue, null, true);
// the value to add as request header
final List<String> values = new ArrayList<String>();
// if its a multi value then check each value if we can add it and for multi values they
// should be combined into a single value
while (it.hasNext()) {
String value =
exchange.getContext().getTypeConverter().convertTo(String.class, it.next());
// we should not add headers for the parameters in the uri if we bridge the endpoint
// as then we would duplicate headers on both the endpoint uri, and in HTTP headers as
// well
if (skipRequestHeaders != null && skipRequestHeaders.containsKey(key)) {
continue;
}
if (value != null
&& strategy != null
&& !strategy.applyFilterToCamelHeaders(key, value, exchange)) {
values.add(value);
}
}
// add the value(s) as a http request header
if (values.size() > 0) {
// use the default toString of a ArrayList to create in the form [xxx, yyy]
// if multi valued, for a single value, then just output the value as is
String s = values.size() > 1 ? values.toString() : values.get(0);
method.addRequestHeader(key, s);
}
}
}
// lets store the result in the output message.
try {
if (LOG.isDebugEnabled()) {
LOG.debug("Executing http {} method: {}", method.getName(), method.getURI().toString());
}
int responseCode = executeMethod(method);
LOG.debug("Http responseCode: {}", responseCode);
if (!throwException) {
// if we do not use failed exception then populate response for all response codes
populateResponse(exchange, method, in, strategy, responseCode);
} else {
if (responseCode >= 100 && responseCode < 300) {
// only populate response for OK response
populateResponse(exchange, method, in, strategy, responseCode);
} else {
// operation failed so populate exception to throw
throw populateHttpOperationFailedException(exchange, method, responseCode);
}
}
} finally {
method.releaseConnection();
}
}
