private void ensureHeaderContentType(
String contentType, boolean isXml, boolean isJson, Exchange exchange) {
// favor given content type
if (contentType != null) {
String type = ExchangeHelper.getContentType(exchange);
if (type == null) {
exchange.getIn().setHeader(Exchange.CONTENT_TYPE, contentType);
}
}
// favor json over xml
if (isJson) {
// make sure there is a content-type with json
String type = ExchangeHelper.getContentType(exchange);
if (type == null) {
exchange.getIn().setHeader(Exchange.CONTENT_TYPE, "application/json");
}
} else if (isXml) {
// make sure there is a content-type with xml
String type = ExchangeHelper.getContentType(exchange);
if (type == null) {
exchange.getIn().setHeader(Exchange.CONTENT_TYPE, "application/xml");
}
}
}
@Override
public boolean process(Exchange exchange, AsyncCallback callback) {
// use atomic integer to be able to pass reference and keep track on the values
AtomicInteger index = new AtomicInteger();
AtomicInteger count = new AtomicInteger();
// Intermediate conversion to String is needed when direct conversion to Integer is not
// available
// but evaluation result is a textual representation of a numeric value.
String text = expression.evaluate(exchange, String.class);
try {
int num = ExchangeHelper.convertToMandatoryType(exchange, Integer.class, text);
count.set(num);
} catch (NoTypeConversionAvailableException e) {
exchange.setException(e);
callback.done(true);
return true;
}
// we hold on to the original Exchange in case it's needed for copies
final Exchange original = exchange;
// per-iteration exchange
Exchange target = exchange;
// set the size before we start
exchange.setProperty(Exchange.LOOP_SIZE, count);
// loop synchronously
while (index.get() < count.get()) {
// and prepare for next iteration
// if (!copy) target = exchange; else copy of original
target = prepareExchange(exchange, index.get(), original);
boolean sync = process(target, callback, index, count, original);
if (!sync) {
LOG.trace(
"Processing exchangeId: {} is continued being processed asynchronously",
target.getExchangeId());
// the remainder of the routing slip will be completed async
// so we break out now, then the callback will be invoked which then continue routing from
// where we left here
return false;
}
LOG.trace(
"Processing exchangeId: {} is continued being processed synchronously",
target.getExchangeId());
// increment counter before next loop
index.getAndIncrement();
}
// we are done so prepare the result
ExchangeHelper.copyResults(exchange, target);
LOG.trace("Processing complete for exchangeId: {} >>> {}", exchange.getExchangeId(), exchange);
callback.done(true);
return true;
}
public void appendJmsProperty(
Message jmsMessage,
Exchange exchange,
org.apache.camel.Message in,
String headerName,
Object headerValue)
throws JMSException {
if (isStandardJMSHeader(headerName)) {
if (headerName.equals("JMSCorrelationID")) {
jmsMessage.setJMSCorrelationID(
ExchangeHelper.convertToType(exchange, String.class, headerValue));
} else if (headerName.equals("JMSReplyTo") && headerValue != null) {
if (headerValue instanceof String) {
// if the value is a String we must normalize it first, and must include the prefix
// as ActiveMQ requires that when converting the String to a javax.jms.Destination type
headerValue = normalizeDestinationName((String) headerValue, true);
}
Destination replyTo =
ExchangeHelper.convertToType(exchange, Destination.class, headerValue);
JmsMessageHelper.setJMSReplyTo(jmsMessage, replyTo);
} else if (headerName.equals("JMSType")) {
jmsMessage.setJMSType(ExchangeHelper.convertToType(exchange, String.class, headerValue));
} else if (headerName.equals("JMSPriority")) {
jmsMessage.setJMSPriority(
ExchangeHelper.convertToType(exchange, Integer.class, headerValue));
} else if (headerName.equals("JMSDeliveryMode")) {
JmsMessageHelper.setJMSDeliveryMode(exchange, jmsMessage, headerValue);
} else if (headerName.equals("JMSExpiration")) {
jmsMessage.setJMSExpiration(
ExchangeHelper.convertToType(exchange, Long.class, headerValue));
} else {
// The following properties are set by the MessageProducer:
// JMSDestination
// The following are set on the underlying JMS provider:
// JMSMessageID, JMSTimestamp, JMSRedelivered
// log at trace level to not spam log
LOG.trace("Ignoring JMS header: {} with value: {}", headerName, headerValue);
}
} else if (shouldOutputHeader(in, headerName, headerValue, exchange)) {
// only primitive headers and strings is allowed as properties
// see message properties: http://java.sun.com/j2ee/1.4/docs/api/javax/jms/Message.html
Object value = getValidJMSHeaderValue(headerName, headerValue);
if (value != null) {
// must encode to safe JMS header name before setting property on jmsMessage
String key = jmsKeyFormatStrategy.encodeKey(headerName);
// set the property
JmsMessageHelper.setProperty(jmsMessage, key, value);
} else if (LOG.isDebugEnabled()) {
// okay the value is not a primitive or string so we cannot sent it over the wire
LOG.debug(
"Ignoring non primitive header: {} of class: {} with value: {}",
new Object[] {headerName, headerValue.getClass().getName(), headerValue});
}
}
}
/**
* Prepares the exchange for the next iteration
*
* @param exchange the exchange
* @param index the index of the next iteration
* @return the exchange to use
*/
protected Exchange prepareExchange(Exchange exchange, int index, Exchange original) {
if (copy) {
// use a copy but let it reuse the same exchange id so it appear as one exchange
// use the original exchange rather than the looping exchange (esp. with the async routing
// engine)
return ExchangeHelper.createCopy(original, true);
} else {
ExchangeHelper.prepareOutToIn(exchange);
return exchange;
}
}
private ContentType getContentType(Exchange exchange) throws ParseException {
String contentTypeStr = ExchangeHelper.getContentType(exchange);
if (contentTypeStr == null) {
contentTypeStr = DEFAULT_CONTENT_TYPE;
}
ContentType contentType = new ContentType(contentTypeStr);
String contentEncoding = ExchangeHelper.getContentEncoding(exchange);
// add a charset parameter for text subtypes
if (contentEncoding != null && contentType.match("text/*")) {
contentType.setParameter("charset", MimeUtility.mimeCharset(contentEncoding));
}
return contentType;
}
/** Strategy to determine if the exchange is done so we can continue */
protected boolean isDone(Exchange exchange) {
boolean answer = isCancelledOrInterrupted(exchange);
// only done if the exchange hasn't failed
// and it has not been handled by the failure processor
// or we are exhausted
if (!answer) {
answer =
exchange.getException() == null
|| ExchangeHelper.isFailureHandled(exchange)
|| ExchangeHelper.isRedeliveryExhausted(exchange);
}
log.trace("Is exchangeId: {} done? {}", exchange.getExchangeId(), answer);
return answer;
}
protected Iterable<ProcessorExchangePair> createProcessorExchangePairs(Exchange exchange)
throws Exception {
List<ProcessorExchangePair> result = new ArrayList<ProcessorExchangePair>(processors.size());
int index = 0;
for (Processor processor : processors) {
// copy exchange, and do not share the unit of work
Exchange copy = ExchangeHelper.createCorrelatedCopy(exchange, false);
// if we share unit of work, we need to prepare the child exchange
if (isShareUnitOfWork()) {
prepareSharedUnitOfWork(copy, exchange);
}
// and add the pair
RouteContext routeContext =
exchange.getUnitOfWork() != null ? exchange.getUnitOfWork().getRouteContext() : null;
result.add(createProcessorExchangePair(index++, processor, copy, routeContext));
}
if (exchange.getException() != null) {
// force any exceptions occurred during creation of exchange paris to be thrown
// before returning the answer;
throw exchange.getException();
}
return result;
}
protected void maybeDisconnectOnDone(Exchange exchange) {
if (session == null) {
return;
}
// should session be closed after complete?
Boolean close;
if (ExchangeHelper.isOutCapable(exchange)) {
close =
exchange
.getOut()
.getHeader(Mina2Constants.MINA_CLOSE_SESSION_WHEN_COMPLETE, Boolean.class);
} else {
close =
exchange
.getIn()
.getHeader(Mina2Constants.MINA_CLOSE_SESSION_WHEN_COMPLETE, Boolean.class);
}
// should we disconnect, the header can override the configuration
boolean disconnect = getEndpoint().getConfiguration().isDisconnect();
if (close != null) {
disconnect = close;
}
if (disconnect) {
LOG.debug("Closing session when complete at address: {}", address);
session.close(true);
}
}
protected Endpoint resolveEndpoint(Exchange exchange, Object recipient) {
// trim strings as end users might have added spaces between separators
if (recipient instanceof String) {
recipient = ((String) recipient).trim();
}
return ExchangeHelper.resolveEndpoint(exchange, recipient);
}
public void process(Exchange exchange) throws Exception {
if (executor == null) {
executor =
exchange
.getContext()
.getExecutorServiceManager()
.newFixedThreadPool(this, "CLAIM-CHECK", 4);
}
String id = tag.evaluate(exchange, String.class);
exchange.setProperty(ClaimCheck.CLAIMCHECK_TAG_HEADER, id);
final Producer conveyor = findDestination(exchange).createProducer();
final Exchange baggage = ExchangeHelper.createCorrelatedCopy(exchange, false);
LOG.info("Checking in 'baggage'");
executor.submit(
new Callable<Exchange>() {
public Exchange call() throws Exception {
try {
LOG.debug("[claimcheck] {} {}", conveyor, baggage);
conveyor.process(baggage);
} catch (Throwable e) {
LOG.warn(
"Error occurred during processing " + baggage + " checked in at " + conveyor, e);
}
return baggage;
};
});
LOG.info("Continue normal flow without 'baggage'");
Message out = exchange.getOut();
out.setBody(value.evaluate(exchange, Object.class));
}
public synchronized void completedExchange(Exchange exchange, long time) {
increment();
exchangesCompleted.increment();
exchangesInflight.decrement();
if (ExchangeHelper.isFailureHandled(exchange)) {
failuresHandled.increment();
}
Boolean externalRedelivered = exchange.isExternalRedelivered();
if (externalRedelivered != null && externalRedelivered) {
externalRedeliveries.increment();
}
minProcessingTime.updateValue(time);
maxProcessingTime.updateValue(time);
totalProcessingTime.updateValue(time);
lastProcessingTime.updateValue(time);
deltaProcessingTime.updateValue(time);
long now = new Date().getTime();
if (firstExchangeCompletedTimestamp.getUpdateCount() == 0) {
firstExchangeCompletedTimestamp.updateValue(now);
}
lastExchangeCompletedTimestamp.updateValue(now);
if (firstExchangeCompletedExchangeId == null) {
firstExchangeCompletedExchangeId = exchange.getExchangeId();
}
lastExchangeCompletedExchangeId = exchange.getExchangeId();
// update mean
long count = exchangesCompleted.getValue();
long mean = count > 0 ? totalProcessingTime.getValue() / count : 0;
meanProcessingTime.updateValue(mean);
}
public void process(Exchange exchange) throws Exception {
Jaxp11XMLReaderCreator xmlCreator = new Jaxp11XMLReaderCreator();
DefaultValidationErrorHandler errorHandler = new DefaultValidationErrorHandler();
PropertyMapBuilder mapBuilder = new PropertyMapBuilder();
mapBuilder.put(ValidateProperty.XML_READER_CREATOR, xmlCreator);
mapBuilder.put(ValidateProperty.ERROR_HANDLER, errorHandler);
PropertyMap propertyMap = mapBuilder.toPropertyMap();
Validator validator = getSchema().createValidator(propertyMap);
Message in = exchange.getIn();
SAXSource saxSource = in.getBody(SAXSource.class);
if (saxSource == null) {
Source source = exchange.getIn().getMandatoryBody(Source.class);
saxSource = ExchangeHelper.convertToMandatoryType(exchange, SAXSource.class, source);
}
InputSource bodyInput = saxSource.getInputSource();
// now lets parse the body using the validator
XMLReader reader = xmlCreator.createXMLReader();
reader.setContentHandler(validator.getContentHandler());
reader.setDTDHandler(validator.getDTDHandler());
reader.setErrorHandler(errorHandler);
reader.parse(bodyInput);
errorHandler.handleErrors(exchange, schema);
}
/**
* Performs a defensive copy of the exchange if needed
*
* @param exchange the exchange
* @return the defensive copy, or <tt>null</tt> if not needed (redelivery is not enabled).
*/
protected Exchange defensiveCopyExchangeIfNeeded(Exchange exchange) {
// only do a defensive copy if redelivery is enabled
if (redeliveryEnabled) {
return ExchangeHelper.createCopy(exchange, true);
} else {
return null;
}
}
@Override
protected Object createBody() {
if (mailMessage != null) {
MailBinding binding = ExchangeHelper.getBinding(getExchange(), MailBinding.class);
return binding != null ? binding.extractBodyFromMail(getExchange(), this) : null;
}
return null;
}
protected void handleException(Exchange exchange, RedeliveryData data) {
Exception e = exchange.getException();
// store the original caused exception in a property, so we can restore it later
exchange.setProperty(Exchange.EXCEPTION_CAUGHT, e);
// find the error handler to use (if any)
OnExceptionDefinition exceptionPolicy = getExceptionPolicy(exchange, e);
if (exceptionPolicy != null) {
data.currentRedeliveryPolicy =
exceptionPolicy.createRedeliveryPolicy(
exchange.getContext(), data.currentRedeliveryPolicy);
data.handledPredicate = exceptionPolicy.getHandledPolicy();
data.continuedPredicate = exceptionPolicy.getContinuedPolicy();
data.retryWhilePredicate = exceptionPolicy.getRetryWhilePolicy();
data.useOriginalInMessage = exceptionPolicy.isUseOriginalMessage();
data.asyncDelayedRedelivery = exceptionPolicy.isAsyncDelayedRedelivery(exchange.getContext());
// route specific failure handler?
Processor processor = exceptionPolicy.getErrorHandler();
if (processor != null) {
data.failureProcessor = processor;
}
// route specific on redelivery?
processor = exceptionPolicy.getOnRedelivery();
if (processor != null) {
data.onRedeliveryProcessor = processor;
}
}
// only log if not failure handled or not an exhausted unit of work
if (!ExchangeHelper.isFailureHandled(exchange)
&& !ExchangeHelper.isUnitOfWorkExhausted(exchange)) {
String msg =
"Failed delivery for exchangeId: "
+ exchange.getExchangeId()
+ ". On delivery attempt: "
+ data.redeliveryCounter
+ " caught: "
+ e;
logFailedDelivery(true, false, false, exchange, msg, data, e);
}
data.redeliveryCounter = incrementRedeliveryCounter(exchange, e, data);
}
/**
* Aggregate the {@link Exchange} with the current result
*
* @param strategy the aggregation strategy to use
* @param result the current result
* @param exchange the exchange to be added to the result
*/
protected synchronized void doAggregate(
AggregationStrategy strategy, AtomicExchange result, Exchange exchange) {
if (strategy != null) {
// prepare the exchanges for aggregation
Exchange oldExchange = result.get();
ExchangeHelper.prepareAggregation(oldExchange, exchange);
result.set(strategy.aggregate(oldExchange, exchange));
}
}
/**
* Creates a holder object for the data to send to the remote server.
*
* @param exchange the exchange with the IN message with data to send
* @return the data holder
* @throws CamelExchangeException is thrown if error creating RequestEntity
*/
protected RequestEntity createRequestEntity(Exchange exchange) throws CamelExchangeException {
Message in = exchange.getIn();
if (in.getBody() == null) {
return null;
}
RequestEntity answer = in.getBody(RequestEntity.class);
if (answer == null) {
try {
Object data = in.getBody();
if (data != null) {
String contentType = ExchangeHelper.getContentType(exchange);
if (contentType != null
&& HttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT.equals(contentType)) {
// serialized java object
Serializable obj = in.getMandatoryBody(Serializable.class);
// write object to output stream
ByteArrayOutputStream bos = new ByteArrayOutputStream();
HttpHelper.writeObjectToStream(bos, obj);
answer =
new ByteArrayRequestEntity(
bos.toByteArray(), HttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT);
IOHelper.close(bos);
} else if (data instanceof File || data instanceof GenericFile) {
// file based (could potentially also be a FTP file etc)
File file = in.getBody(File.class);
if (file != null) {
answer = new FileRequestEntity(file, contentType);
}
} else if (data instanceof String) {
// be a bit careful with String as any type can most likely be converted to String
// so we only do an instanceof check and accept String if the body is really a String
// do not fallback to use the default charset as it can influence the request
// (for example application/x-www-form-urlencoded forms being sent)
String charset = IOHelper.getCharsetName(exchange, false);
answer = new StringRequestEntity((String) data, contentType, charset);
}
// fallback as input stream
if (answer == null) {
// force the body as an input stream since this is the fallback
InputStream is = in.getMandatoryBody(InputStream.class);
answer = new InputStreamRequestEntity(is, contentType);
}
}
} catch (UnsupportedEncodingException e) {
throw new CamelExchangeException(
"Error creating RequestEntity from message body", exchange, e);
} catch (IOException e) {
throw new CamelExchangeException("Error serializing message body", exchange, e);
}
}
return answer;
}
@Handler
@Transactional
@Override
public void handle(Exchange exchange) throws InvalidPayloadException {
Receipt receipt = ExchangeHelper.getMandatoryInBody(exchange, Receipt.class);
if (!updateDatabase(receipt)) {
LOG.warn(
"Could not find batch for digipostBatchId='{}'. Stopping route.", receipt.getRefJobbId());
exchange.setProperty(Exchange.ROUTE_STOP, true);
}
}
private List<Map<String, Object>> executeQuery(Exchange exchange) throws Exception {
String query = ExchangeHelper.getMandatoryInBody(exchange, String.class);
boolean retrieveContent =
exchange
.getIn()
.getHeader(CamelCMISConstants.CAMEL_CMIS_RETRIEVE_CONTENT, false, Boolean.class);
int readSize =
exchange.getIn().getHeader(CamelCMISConstants.CAMEL_CMIS_READ_SIZE, 0, Integer.class);
ItemIterable<QueryResult> itemIterable = cmisSessionFacade.executeQuery(query);
return cmisSessionFacade.retrieveResult(retrieveContent, readSize, itemIterable);
}
// HeaderFilterStrategyAware Methods
// -------------------------------------------------------------------------
protected void setCharsetWithContentType(Exchange camelExchange) {
// setup the charset from content-type header
String contentTypeHeader = ExchangeHelper.getContentType(camelExchange);
if (contentTypeHeader != null) {
String charset = HttpHeaderHelper.findCharset(contentTypeHeader);
String normalizedEncoding =
HttpHeaderHelper.mapCharset(charset, Charset.forName("UTF-8").name());
if (normalizedEncoding != null) {
camelExchange.setProperty(Exchange.CHARSET_NAME, normalizedEncoding);
}
}
}
public void process(Exchange exchange) throws Exception {
notNull(getTemplate(), "template");
if (isDeleteOutputFile()) {
// add on completion so we can delete the file when the Exchange is done
String fileName =
ExchangeHelper.getMandatoryHeader(exchange, Exchange.XSLT_FILE_NAME, String.class);
exchange.addOnCompletion(new XsltBuilderOnCompletion(fileName));
}
Transformer transformer = getTransformer();
configureTransformer(transformer, exchange);
ResultHandler resultHandler = resultHandlerFactory.createResult(exchange);
Result result = resultHandler.getResult();
// let's copy the headers before we invoke the transform in case they modify them
Message out = exchange.getOut();
out.copyFrom(exchange.getIn());
// the underlying input stream, which we need to close to avoid locking files or other resources
InputStream is = null;
try {
Source source;
// only convert to input stream if really needed
if (isInputStreamNeeded(exchange)) {
is = exchange.getIn().getBody(InputStream.class);
source = getSource(exchange, is);
} else {
Object body = exchange.getIn().getBody();
source = getSource(exchange, body);
}
if (source instanceof StAXSource) {
// Always convert StAXSource to SAXSource.
// * Xalan and Saxon-B don't support StAXSource.
// * The JDK default implementation (XSLTC) doesn't handle CDATA events
// (see com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX).
// * Saxon-HE/PE/EE seem to support StAXSource, but don't advertise this
// officially (via TransformerFactory.getFeature(StAXSource.FEATURE))
source = new StAX2SAXSource(((StAXSource) source).getXMLStreamReader());
}
LOG.trace("Using {} as source", source);
transformer.transform(source, result);
LOG.trace("Transform complete with result {}", result);
resultHandler.setBody(out);
} finally {
releaseTransformer(transformer);
// IOHelper can handle if is is null
IOHelper.close(is);
}
}
@Override
protected void populateInitialAttachments(Map<String, DataHandler> map) {
if (mailMessage != null) {
try {
MailBinding binding = ExchangeHelper.getBinding(getExchange(), MailBinding.class);
if (binding != null) {
binding.extractAttachmentsFromMail(mailMessage, map);
}
} catch (Exception e) {
throw new RuntimeCamelException("Error populating the initial mail message attachments", e);
}
}
}
public Object unmarshal(Exchange exchange, InputStream stream) throws Exception {
InputStream is = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class);
GZIPInputStream unzipInput = new GZIPInputStream(is);
// Create an expandable byte array to hold the inflated data
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
IOHelper.copy(unzipInput, bos);
return bos.toByteArray();
} finally {
IOHelper.close(unzipInput);
}
}
@Override
protected void populateInitialHeaders(Map<String, Object> map) {
if (mailMessage != null) {
try {
MailBinding binding = ExchangeHelper.getBinding(getExchange(), MailBinding.class);
if (binding != null) {
map.putAll(binding.extractHeadersFromMail(mailMessage, getExchange()));
}
} catch (MessagingException e) {
throw new RuntimeCamelException("Error accessing headers due to: " + e.getMessage(), e);
}
}
}
/** Strategy to determine if the exchange was cancelled or interrupted */
protected boolean isCancelledOrInterrupted(Exchange exchange) {
boolean answer = false;
if (ExchangeHelper.isInterrupted(exchange)) {
// mark the exchange to stop continue routing when interrupted
// as we do not want to continue routing (for example a task has been cancelled)
exchange.setProperty(Exchange.ROUTE_STOP, Boolean.TRUE);
answer = true;
}
log.trace("Is exchangeId: {} interrupted? {}", exchange.getExchangeId(), answer);
return answer;
}
@Override
public void process(Exchange exchange) throws Exception {
CamelExchange ex = new CamelExchange(exchange);
if (ex.getState() != ExchangeState.FAULT) {
Exception exception = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
notifyListeners(exchange.getContext(), ex, exception);
Throwable content = detectHandlerException(exception);
org.switchyard.Property rollbackOnFaultProperty =
ex.getContext().getProperty(org.switchyard.Exchange.ROLLBACK_ON_FAULT);
if (rollbackOnFaultProperty == null || rollbackOnFaultProperty.getValue() == null) {
ex.getContext()
.setProperty(org.switchyard.Exchange.ROLLBACK_ON_FAULT, Boolean.TRUE, Scope.EXCHANGE);
}
ex.sendFault(ex.createMessage().setContent(content));
ExchangeHelper.setFailureHandled(exchange);
}
}
@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
@Override
public void process(Exchange exchange) throws Exception {
if (exchange.getIn().getBody() instanceof InputStream) {
exchange.getIn().setBody(exchange.getContext().getStreamCachingStrategy().cache(exchange));
}
Exchange tempExchange = exchange.copy(true);
try {
for (int retry = 0; retry < endpoint.getMaxTries(); ++retry) {
if (endpoint.getRetryDelay() > 0 && retry > 0) {
Thread.sleep(endpoint.getRetryDelay());
}
endpoint.getTargetProducer().process(tempExchange);
if (tempExchange.getException() == null) {
onSuccess(tempExchange);
return; // success
}
FailRetryException failure =
getExceptionMatching(tempExchange.getException(), FailRetryException.class);
if (failure != null) {
if (!failure.isConsumed()) {
failure.setConsumed(); // make it non-failure for surrounding retries
return; // forward exception
}
}
if (getExceptionMatching(tempExchange.getException(), endpoint.getException()) != null) {
// retry
LOGGER.debug("{} try {} failed", endpoint.getEndpointUri(), retry + 1);
tempExchange = exchange.copy(true);
if (exchange.getIn().getBody() instanceof StreamCache) {
StreamCache is = (StreamCache) exchange.getIn().getBody();
is.reset();
}
} else {
return; // forward exception
}
}
onExhausted(exchange);
tempExchange.setException(
new RetryExhaustedException("Retry exhausted", tempExchange.getException()));
} finally {
ExchangeHelper.copyResults(exchange, tempExchange);
}
}
@SuppressWarnings("unchecked")
public <T> T getProperty(String name, Object defaultValue, Class<T> type) {
Object value = getProperty(name, defaultValue);
if (value == null) {
// lets avoid NullPointerException when converting to boolean for null values
if (boolean.class.isAssignableFrom(type)) {
return (T) Boolean.FALSE;
}
return null;
}
// eager same instance type test to avoid the overhead of invoking the type converter
// if already same type
if (type.isInstance(value)) {
return type.cast(value);
}
return ExchangeHelper.convertToType(this, type, value);
}
public void process(Exchange exchange) throws Exception {
notNull(getTemplate(), "template");
if (isDeleteOutputFile()) {
// add on completion so we can delete the file when the Exchange is done
String fileName =
ExchangeHelper.getMandatoryHeader(exchange, Exchange.XSLT_FILE_NAME, String.class);
exchange.addOnCompletion(new XsltBuilderOnCompletion(fileName));
}
Transformer transformer = getTransformer();
configureTransformer(transformer, exchange);
ResultHandler resultHandler = resultHandlerFactory.createResult(exchange);
Result result = resultHandler.getResult();
exchange.setProperty("isXalanTransformer", isXalanTransformer(transformer));
// let's copy the headers before we invoke the transform in case they modify them
Message out = exchange.getOut();
out.copyFrom(exchange.getIn());
// the underlying input stream, which we need to close to avoid locking files or other resources
InputStream is = null;
try {
Source source;
// only convert to input stream if really needed
if (isInputStreamNeeded(exchange)) {
is = exchange.getIn().getBody(InputStream.class);
source = getSource(exchange, is);
} else {
Object body = exchange.getIn().getBody();
source = getSource(exchange, body);
}
LOG.trace("Using {} as source", source);
transformer.transform(source, result);
LOG.trace("Transform complete with result {}", result);
resultHandler.setBody(out);
} finally {
releaseTransformer(transformer);
// IOHelper can handle if is is null
IOHelper.close(is);
}
}
/**
* Gets the Camel {@link Message} to use as the message to be set on the current {@link Exchange}
* when we have received a reply message.
*
* <p>
*
* @param exchange the current exchange
* @param messageEvent the incoming event which has the response message from Netty.
* @return the Camel {@link Message} to set on the current {@link Exchange} as the response
* message.
* @throws Exception is thrown if error getting the response message
*/
protected Message getResponseMessage(Exchange exchange, MessageEvent messageEvent)
throws Exception {
Object body = messageEvent.getMessage();
if (LOG.isDebugEnabled()) {
LOG.debug("Channel: {} received body: {}", new Object[] {messageEvent.getChannel(), body});
}
// if textline enabled then covert to a String which must be used for textline
if (producer.getConfiguration().isTextline()) {
body =
producer.getContext().getTypeConverter().mandatoryConvertTo(String.class, exchange, body);
}
// set the result on either IN or OUT on the original exchange depending on its pattern
if (ExchangeHelper.isOutCapable(exchange)) {
NettyPayloadHelper.setOut(exchange, body);
return exchange.getOut();
} else {
NettyPayloadHelper.setIn(exchange, body);
return exchange.getIn();
}
}
