Java Exchange.setProperty方法代碼示例

import org.apache.camel.Exchange; //導入方法依賴的package包/類
@Override
public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
    Exchange exchange = super.aggregate(oldExchange, newExchange);

    List<Exchange> aggregatedExchanges = exchange.getProperty("CamelGroupedExchange", List.class);

    // Complete aggregation if we have "numberOfSystems" (currently 3) different messages (where "system" headers are different)
    // https://github.com/apache/camel/blob/master/camel-core/src/main/docs/eips/aggregate-eip.adoc#completing-current-group-decided-from-the-aggregationstrategy
    if (numberOfSystems == aggregatedExchanges.stream().map(e -> e.getIn().getHeader("system", String.class)).distinct().count()) {
        exchange.setProperty(Exchange.AGGREGATION_COMPLETE_CURRENT_GROUP, true);
    }

    return exchange;
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
@Override
public void process(Exchange exchange) throws Exception {
    DiskFileItemFactory factory = new DiskFileItemFactory();
    factory.setRepository(new File(System.getProperty("java.io.tmpdir")));

    ExchangeFileUpload upload = new ExchangeFileUpload(factory);

    java.util.List<FileItem> items = upload.parseExchange(exchange);

    if(items.size() >= 1){
        exchange.getIn().setBody(items.get(0).getInputStream());

        for (int i = 1; i < items.size(); i++) {
            exchange.setProperty(items.get(i).getName(), items.get(i).getInputStream());
        }
    }
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
public void before(Exchange exchange){
  // mdc 
  requestIdManager.generate(exchange);
  // log perf
  long start = System.currentTimeMillis();
  exchange.setProperty(EXCHANGE_PERF_PROPERTY, start);
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
public void generate(Exchange exchange) {
  String requestId = generateReqId();
  ThreadContext.put(REQUEST_ID, requestId);
  exchange.setProperty(REQUEST_ID, requestId);
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
@Override
public void process(Exchange exchange) throws Exception {
	
	String messageToSend = generateMessagePayload(exchange.getProperty("messageSize", Integer.class));
	
	int batchSize = exchange.getProperty("transactionBatchSize", Integer.class);
	boolean transacted = exchange.getProperty("transacted", Boolean.class);
	int messageCount = exchange.getProperty("messageCount", Integer.class);
	
	// Avoid having batch size == 0
	if (batchSize == 0) { 
		batchSize = 1; 
		exchange.setProperty("transactionBatchSize", batchSize);
	}
	
	// Avoid batchSize > total number of message to process
	if  (batchSize > messageCount) {
		exchange.setProperty("transactionBatchSize", messageCount);
		batchSize = messageCount;
	}
	
	exchange.setProperty("messageCount", messageCount - batchSize);
	
	// Prepare message headers
	Map<String, Object> messageHeader = null;
	if (exchange.getProperty("JMSXGroupID") != null) {
		messageHeader = new HashMap<String, Object>();
		messageHeader.put("JMSXGroupID", exchange.getProperty("JMSXGroupID", String.class));
	}
	
	// Prepare batch messages
	List<BatchMessage<String>> messages = new ArrayList<BatchMessage<String>>();
	for (int i = 1; i <= batchSize; i++) {
		
	    BatchMessage<String> message = new BatchMessage<String>(messageToSend, messageHeader);
	    messages.add(message);
	}
	
	String destination = exchange.getProperty("destination", String.class);
	Long msgTTL = exchange.getProperty("msgTTL", Long.class);
	boolean persistent = exchange.getProperty("persistent", Boolean.class);
	
	String sjmsUri = "sjms:" + destination +
					 "?ttl=" + msgTTL + 
				     "&persistent=" + persistent +
					 "&transacted=" + transacted;
	exchange.setProperty("sjmsUri", sjmsUri);
	exchange.getIn().setBody(messages);
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
@Override
public void process(Exchange exchange) throws Exception {
	Message requestMessage = exchange.getIn();	
	if (requestMessage.getHeader("messageCount") != null) {
		exchange.setProperty("messageCount", requestMessage.getHeader("messageCount", Integer.class));
		exchange.setProperty("messageToSend", requestMessage.getHeader("messageCount", Integer.class));
	} else {
		exchange.setProperty("messageCount", messageCount);
		exchange.setProperty("messageToSend", messageCount);
	}
	
	if (requestMessage.getHeader("messageSize") != null) {
		exchange.setProperty("messageSize", requestMessage.getHeader("messageSize", Integer.class));
	} else {
		exchange.setProperty("messageSize", messageSize);
	}
	
	if (requestMessage.getHeader("transactionBatchSize") != null) {
		exchange.setProperty("transactionBatchSize", requestMessage.getHeader("transactionBatchSize", Integer.class));
		exchange.setProperty("requestTransactionBatchSize", requestMessage.getHeader("transactionBatchSize", Integer.class));
	} else {
		exchange.setProperty("transactionBatchSize", transactionBatchSize);
	}
	
	if (requestMessage.getHeader("transacted") != null) {
		exchange.setProperty("transacted", requestMessage.getHeader("transacted", Boolean.class));
	} else {
		exchange.setProperty("transacted", transacted);
	}
	
	if (requestMessage.getHeader("msgTTL") != null) {
		exchange.setProperty("msgTTL", requestMessage.getHeader("msgTTL",Long.class));
	} else {
		exchange.setProperty("msgTTL", msgTTL);
	}
	
	if (requestMessage.getHeader("persistent") != null) {
		exchange.setProperty("persistent", requestMessage.getHeader("persistent", Boolean.class));
	} else {
		exchange.setProperty("persistent", persistent);
	}
	
	if (requestMessage.getHeader("msgGroupID") != null)
		exchange.setProperty("JMSXGroupID", requestMessage.getHeader("msgGroupID", String.class));
	
	exchange.setProperty("destination", requestMessage.getHeader("destination",String.class));
}
 

import org.apache.camel.Exchange; //導入方法依賴的package包/類
private static void setFailureHandled(Exchange exchange) {
	exchange.setProperty(Exchange.EXCEPTION_CAUGHT, exchange.getException());
	exchange.setProperty(Exchange.ERRORHANDLER_HANDLED, Boolean.TRUE);
	exchange.setException(null);
}