| /* |
| * 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.aws.sns; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import com.amazonaws.services.sns.model.MessageAttributeValue; |
| import com.amazonaws.services.sns.model.PublishRequest; |
| import com.amazonaws.services.sns.model.PublishResult; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Message; |
| import org.apache.camel.spi.HeaderFilterStrategy; |
| import org.apache.camel.support.DefaultProducer; |
| import org.apache.camel.util.URISupport; |
| |
| |
| /** |
| * A Producer which sends messages to the Amazon Web Service Simple Notification Service |
| * <a href="http://aws.amazon.com/sns/">AWS SNS</a> |
| */ |
| public class SnsProducer extends DefaultProducer { |
| |
| private transient String snsProducerToString; |
| |
| public SnsProducer(Endpoint endpoint) { |
| super(endpoint); |
| } |
| |
| public void process(Exchange exchange) throws Exception { |
| PublishRequest request = new PublishRequest(); |
| |
| request.setTopicArn(getConfiguration().getTopicArn()); |
| request.setSubject(determineSubject(exchange)); |
| request.setMessageStructure(determineMessageStructure(exchange)); |
| request.setMessage(exchange.getIn().getBody(String.class)); |
| request.setMessageAttributes(this.translateAttributes(exchange.getIn().getHeaders(), exchange)); |
| |
| log.trace("Sending request [{}] from exchange [{}]...", request, exchange); |
| |
| PublishResult result = getEndpoint().getSNSClient().publish(request); |
| |
| log.trace("Received result [{}]", result); |
| |
| Message message = getMessageForResponse(exchange); |
| message.setHeader(SnsConstants.MESSAGE_ID, result.getMessageId()); |
| } |
| |
| private String determineSubject(Exchange exchange) { |
| String subject = exchange.getIn().getHeader(SnsConstants.SUBJECT, String.class); |
| if (subject == null) { |
| subject = getConfiguration().getSubject(); |
| } |
| |
| return subject; |
| } |
| |
| private String determineMessageStructure(Exchange exchange) { |
| String structure = exchange.getIn().getHeader(SnsConstants.MESSAGE_STRUCTURE, String.class); |
| if (structure == null) { |
| structure = getConfiguration().getMessageStructure(); |
| } |
| |
| return structure; |
| } |
| |
| Map<String, MessageAttributeValue> translateAttributes(Map<String, Object> headers, Exchange exchange) { |
| Map<String, MessageAttributeValue> result = new HashMap<>(); |
| HeaderFilterStrategy headerFilterStrategy = getEndpoint().getHeaderFilterStrategy(); |
| for (Entry<String, Object> entry : headers.entrySet()) { |
| // only put the message header which is not filtered into the message attribute |
| if (!headerFilterStrategy.applyFilterToCamelHeaders(entry.getKey(), entry.getValue(), exchange)) { |
| Object value = entry.getValue(); |
| if (value instanceof String && !((String)value).isEmpty()) { |
| MessageAttributeValue mav = new MessageAttributeValue(); |
| mav.setDataType("String"); |
| mav.withStringValue((String)value); |
| result.put(entry.getKey(), mav); |
| } else if (value instanceof ByteBuffer) { |
| MessageAttributeValue mav = new MessageAttributeValue(); |
| mav.setDataType("Binary"); |
| mav.withBinaryValue((ByteBuffer)value); |
| result.put(entry.getKey(), mav); |
| } else if (value instanceof Date) { |
| MessageAttributeValue mav = new MessageAttributeValue(); |
| mav.setDataType("String"); |
| mav.withStringValue(value.toString()); |
| result.put(entry.getKey(), mav); |
| } else { |
| // cannot translate the message header to message attribute value |
| log.warn("Cannot put the message header key={}, value={} into Sns MessageAttribute", entry.getKey(), entry.getValue()); |
| } |
| } |
| } |
| return result; |
| } |
| |
| protected SnsConfiguration getConfiguration() { |
| return getEndpoint().getConfiguration(); |
| } |
| |
| @Override |
| public String toString() { |
| if (snsProducerToString == null) { |
| snsProducerToString = "SnsProducer[" + URISupport.sanitizeUri(getEndpoint().getEndpointUri()) + "]"; |
| } |
| return snsProducerToString; |
| } |
| |
| @Override |
| public SnsEndpoint getEndpoint() { |
| return (SnsEndpoint) super.getEndpoint(); |
| } |
| |
| public static Message getMessageForResponse(final Exchange exchange) { |
| if (exchange.getPattern().isOutCapable()) { |
| Message out = exchange.getOut(); |
| out.copyFrom(exchange.getIn()); |
| return out; |
| } |
| return exchange.getIn(); |
| } |
| } |