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Camel CM SMS Gateway Component
/**
* 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.cm;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.UUID;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
import org.apache.camel.component.cm.exceptions.CMDirectException;
import org.apache.camel.component.cm.exceptions.XMLConstructionException;
import org.apache.camel.component.cm.exceptions.cmresponse.CMResponseException;
import org.apache.camel.component.cm.exceptions.cmresponse.InsufficientBalanceException;
import org.apache.camel.component.cm.exceptions.cmresponse.InvalidProductTokenException;
import org.apache.camel.component.cm.exceptions.cmresponse.NoAccountFoundForProductTokenException;
import org.apache.camel.component.cm.exceptions.cmresponse.UnknownErrorException;
import org.apache.camel.component.cm.exceptions.cmresponse.UnroutableMessageException;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CMSenderOneMessageImpl implements CMSender {
private static final Logger LOG = LoggerFactory.getLogger(CMSenderOneMessageImpl.class);
private final String url;
private final UUID productToken;
public CMSenderOneMessageImpl(final String url, final UUID productToken) {
this.url = url;
this.productToken = productToken;
}
/**
* Sends a message to CM endpoints. 1. CMMessage instance is going to be marshalled to xml. 2. Post request xml string to CMEndpoint.
*/
@Override
public void send(final CMMessage cmMessage) {
// See: Check https://dashboard.onlinesmsgateway.com/docs for responses
// 1.Construct XML. Throws XMLConstructionException
final String xml = createXml(cmMessage);
// 2. Try to send to CM SMS Provider ...Throws CMResponseException
doHttpPost(url, xml);
}
private String createXml(final CMMessage message) {
try {
final ByteArrayOutputStream xml = new ByteArrayOutputStream();
final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
// Get the DocumentBuilder
final DocumentBuilder docBuilder = factory.newDocumentBuilder();
// Create blank DOM Document
final DOMImplementation impl = docBuilder.getDOMImplementation();
final Document doc = impl.createDocument(null, "MESSAGES", null);
// ROOT Element es MESSAGES
final Element root = doc.getDocumentElement();
// AUTHENTICATION element
final Element authenticationElement = doc.createElement("AUTHENTICATION");
final Element productTokenElement = doc.createElement("PRODUCTTOKEN");
authenticationElement.appendChild(productTokenElement);
final Text productTokenValue = doc.createTextNode("" + productToken);
productTokenElement.appendChild(productTokenValue);
root.appendChild(authenticationElement);
// MSG Element
final Element msgElement = doc.createElement("MSG");
root.appendChild(msgElement);
// VALUE
final Element fromElement = doc.createElement("FROM");
fromElement.appendChild(doc.createTextNode(message.getSender()));
msgElement.appendChild(fromElement);
// VALUE
final Element bodyElement = doc.createElement("BODY");
bodyElement.appendChild(doc.createTextNode(message.getMessage()));
msgElement.appendChild(bodyElement);
// VALUE
final Element toElement = doc.createElement("TO");
toElement.appendChild(doc.createTextNode(message.getPhoneNumber()));
msgElement.appendChild(toElement);
// VALUE - if UNICODE - messageOut.isGSM338Enc
// false
if (message.isUnicode()) {
final Element dcsElement = doc.createElement("DCS");
dcsElement.appendChild(doc.createTextNode("8"));
msgElement.appendChild(dcsElement);
}
// VALUE -Alfanum
final String id = message.getIdAsString();
if (id != null && !id.isEmpty()) {
final Element refElement = doc.createElement("REFERENCE");
refElement.appendChild(doc.createTextNode("" + message.getIdAsString()));
msgElement.appendChild(refElement);
}
// 1
// 8
if (message.isMultipart()) {
final Element minMessagePartsElement = doc.createElement("MINIMUMNUMBEROFMESSAGEPARTS");
minMessagePartsElement.appendChild(doc.createTextNode("1"));
msgElement.appendChild(minMessagePartsElement);
final Element maxMessagePartsElement = doc.createElement("MAXIMUMNUMBEROFMESSAGEPARTS");
maxMessagePartsElement.appendChild(doc.createTextNode(Integer.toString(message.getMultiparts())));
msgElement.appendChild(maxMessagePartsElement);
}
// Creatate XML as String
final Transformer aTransformer = TransformerFactory.newInstance().newTransformer();
aTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
final Source src = new DOMSource(doc);
final Result dest = new StreamResult(xml);
aTransformer.transform(src, dest);
return xml.toString();
} catch (final TransformerException e) {
throw new XMLConstructionException(String.format("Cant serialize CMMessage %s", message), e);
} catch (final ParserConfigurationException e) {
throw new XMLConstructionException(String.format("Cant serialize CMMessage %s", message), e);
}
}
private void doHttpPost(final String urlString, final String requestString) {
final HttpClient client = HttpClientBuilder.create().build();
final HttpPost post = new HttpPost(urlString);
post.setEntity(new StringEntity(requestString, Charset.forName("UTF-8")));
try {
final HttpResponse response = client.execute(post);
final int statusCode = response.getStatusLine().getStatusCode();
LOG.debug("Response Code : {}", statusCode);
if (statusCode == 400) {
throw new CMDirectException("CM Component and CM API show some kind of inconsistency. "
+ "CM is complaining about not using a post method for the request. And this component only uses POST requests. What happens?");
}
if (statusCode != 200) {
throw new CMDirectException("CM Component and CM API show some kind of inconsistency. The component expects the status code to be 200 or 400. New api released? ");
}
// So we have 200 status code...
// The response type is 'text/plain' and contains the actual
// result of the request processing.
// We obtaing the result text
final BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
final StringBuffer result = new StringBuffer();
String line = null;
while ((line = rd.readLine()) != null) {
result.append(line);
}
// ... and process it
line = result.toString();
if (!line.isEmpty()) {
// Line is not empty = error
LOG.debug("Result of the request processing: FAILED\n{}", line);
// The response text contains the error description. We will
// throw a custom exception for each.
if (line.contains(CMConstants.ERROR_UNKNOWN)) {
throw new UnknownErrorException();
} else if (line.contains(CMConstants.ERROR_NO_ACCOUNT)) {
throw new NoAccountFoundForProductTokenException();
} else if (line.contains(CMConstants.ERROR_INSUFICIENT_BALANCE)) {
throw new InsufficientBalanceException();
} else if (line.contains(CMConstants.ERROR_UNROUTABLE_MESSAGE)) {
throw new UnroutableMessageException();
} else if (line.contains(CMConstants.ERROR_INVALID_PRODUCT_TOKEN)) {
throw new InvalidProductTokenException();
} else {
// SO FAR i would expect other kind of ERROR.
// MSISDN correctness and message validity is client
// responsibility
throw new CMResponseException("CHECK ME. I am not expecting this. ");
}
}
// Ok. Line is EMPTY - successfully submitted
LOG.debug("Result of the request processing: Successfully submited");
} catch (final IOException io) {
throw new CMDirectException(io);
} catch (Throwable t) {
if (!(t instanceof CMDirectException)) {
// Chain it
t = new CMDirectException(t);
}
throw (CMDirectException) t;
}
}
}