com.microsoft.azure.servicebus.management.TopicDescriptionSerializer Maven / Gradle / Ivy
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Java library for Azure Service Bus. Please note, a newer package com.azure:azure-messaging-servicebus for Azure Service Bus is available as of December 2020. While this package will continue to receive critical bug fixes, we strongly encourage you to upgrade. Read the migration guide at https://aka.ms/azsdk/java/migrate/sb for more details.
package com.microsoft.azure.servicebus.management;
import com.microsoft.azure.servicebus.primitives.MessagingEntityNotFoundException;
import com.microsoft.azure.servicebus.primitives.ServiceBusException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
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 java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.time.Duration;
import java.util.ArrayList;
import java.util.List;
class TopicDescriptionSerializer {
private static final Logger TRACE_LOGGER = LoggerFactory.getLogger(TopicDescriptionSerializer.class);
static String serialize(TopicDescription topicDescription) throws ServiceBusException {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
try {
dBuilder = dbFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw new ServiceBusException(false, e);
}
Document doc = dBuilder.newDocument();
Element rootElement = doc.createElementNS(ManagementClientConstants.ATOM_NS, "entry");
doc.appendChild(rootElement);
Element contentElement = doc.createElementNS(ManagementClientConstants.ATOM_NS, "content");
rootElement.appendChild(contentElement);
contentElement.setAttribute("type", "application/xml");
Element tdElement = doc.createElementNS(ManagementClientConstants.SB_NS, "TopicDescription");
contentElement.appendChild(tdElement);
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "MaxSizeInMegabytes")
.appendChild(doc.createTextNode(Long.toString(topicDescription.maxSizeInMB))).getParentNode());
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "RequiresDuplicateDetection")
.appendChild(doc.createTextNode(Boolean.toString(topicDescription.requiresDuplicateDetection))).getParentNode());
if (topicDescription.defaultMessageTimeToLive.compareTo(ManagementClientConstants.MAX_DURATION) < 0) {
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "DefaultMessageTimeToLive")
.appendChild(doc.createTextNode(topicDescription.defaultMessageTimeToLive.toString())).getParentNode());
}
if (topicDescription.requiresDuplicateDetection && topicDescription.duplicationDetectionHistoryTimeWindow.compareTo(Duration.ZERO) > 0) {
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "DuplicateDetectionHistoryTimeWindow")
.appendChild(doc.createTextNode(topicDescription.duplicationDetectionHistoryTimeWindow.toString())).getParentNode());
}
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "EnableBatchedOperations")
.appendChild(doc.createTextNode(Boolean.toString(topicDescription.enableBatchedOperations))).getParentNode());
if (topicDescription.authorizationRules != null) {
tdElement.appendChild(AuthorizationRuleSerializer.serializeRules(topicDescription.authorizationRules, doc));
}
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "Status")
.appendChild(doc.createTextNode(topicDescription.status.name())).getParentNode());
if (topicDescription.userMetadata != null) {
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "UserMetadata")
.appendChild(doc.createTextNode(topicDescription.userMetadata)).getParentNode());
}
if (topicDescription.autoDeleteOnIdle.compareTo(ManagementClientConstants.MAX_DURATION) < 0) {
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "AutoDeleteOnIdle")
.appendChild(doc.createTextNode(topicDescription.autoDeleteOnIdle.toString())).getParentNode());
}
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "SupportOrdering")
.appendChild(doc.createTextNode(Boolean.toString(topicDescription.supportOrdering))).getParentNode());
tdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "EnablePartitioning")
.appendChild(doc.createTextNode(Boolean.toString(topicDescription.enablePartitioning))).getParentNode());
// Convert dom document to string.
StringWriter output = new StringWriter();
try {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.transform(new DOMSource(doc), new StreamResult(output));
} catch (TransformerException e) {
throw new ServiceBusException(false, e);
}
return output.toString();
}
static List parseCollectionFromContent(String xml) {
ArrayList topicList = new ArrayList<>();
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
Document dom = db.parse(new ByteArrayInputStream(xml.getBytes("utf-8")));
Element doc = dom.getDocumentElement();
doc.normalize();
NodeList entries = doc.getChildNodes();
for (int i = 0; i < entries.getLength(); i++) {
Node node = entries.item(i);
if (node.getNodeName().equals("entry")) {
topicList.add(parseFromEntry(node));
}
}
} catch (ParserConfigurationException | IOException | SAXException e) {
if (TRACE_LOGGER.isErrorEnabled()) {
TRACE_LOGGER.error("Exception while parsing response.", e);
}
if (TRACE_LOGGER.isDebugEnabled()) {
TRACE_LOGGER.debug("XML which failed to parse: \n %s", xml);
}
}
return topicList;
}
static TopicDescription parseFromContent(String xml) throws MessagingEntityNotFoundException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
Document dom = db.parse(new ByteArrayInputStream(xml.getBytes("utf-8")));
Element doc = dom.getDocumentElement();
doc.normalize();
if (doc.getTagName() == "entry")
return parseFromEntry(doc);
} catch (ParserConfigurationException | IOException | SAXException e) {
if (TRACE_LOGGER.isErrorEnabled()) {
TRACE_LOGGER.error("Exception while parsing response.", e);
}
if (TRACE_LOGGER.isDebugEnabled()) {
TRACE_LOGGER.debug("XML which failed to parse: \n %s", xml);
}
}
throw new MessagingEntityNotFoundException("Topic was not found");
}
private static TopicDescription parseFromEntry(Node xEntry) {
TopicDescription td = null;
NodeList nList = xEntry.getChildNodes();
for (int i = 0; i < nList.getLength(); i++) {
Node node = nList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element)node;
switch(element.getTagName())
{
case "title":
td = new TopicDescription(element.getFirstChild().getNodeValue());
break;
case "content":
NodeList qdNodes = element.getFirstChild().getChildNodes();
for (int j = 0; j < qdNodes.getLength(); j++)
{
node = qdNodes.item(j);
if (node.getNodeType() == Node.ELEMENT_NODE) {
element = (Element) node;
switch (element.getTagName())
{
case "MaxSizeInMegabytes":
td.maxSizeInMB = Long.parseLong(element.getFirstChild().getNodeValue());
break;
case "RequiresDuplicateDetection":
td.requiresDuplicateDetection = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "DuplicateDetectionHistoryTimeWindow":
td.duplicationDetectionHistoryTimeWindow = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "DefaultMessageTimeToLive":
td.defaultMessageTimeToLive = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "EnableBatchedOperations":
td.enableBatchedOperations = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "Status":
td.status = EntityStatus.valueOf(element.getFirstChild().getNodeValue());
break;
case "AutoDeleteOnIdle":
td.autoDeleteOnIdle = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "EnablePartitioning":
td.enablePartitioning = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "UserMetadata":
td.userMetadata = element.getFirstChild().getNodeValue();
break;
case "AuthorizationRules":
td.authorizationRules = AuthorizationRuleSerializer.parseAuthRules(element);
break;
case "SupportOrdering":
td.supportOrdering = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
}
}
}
break;
}
}
}
return td;
}
}