com.microsoft.azure.servicebus.management.SubscriptionDescriptionSerializer Maven / Gradle / Ivy
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Java library for Azure Service Bus
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
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.net.URI;
import java.time.Duration;
import java.util.ArrayList;
import java.util.List;
class SubscriptionDescriptionSerializer {
private static final Logger TRACE_LOGGER = LoggerFactory.getLogger(SubscriptionDescriptionSerializer.class);
static String serialize(SubscriptionDescription subscriptionDescription) throws ServiceBusException {
DocumentBuilder dBuilder;
try {
DocumentBuilderFactory dbFactory = SerializerUtil.getDocumentBuilderFactory();
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 sdElement = doc.createElementNS(ManagementClientConstants.SB_NS, "SubscriptionDescription");
contentElement.appendChild(sdElement);
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "LockDuration")
.appendChild(doc.createTextNode(subscriptionDescription.lockDuration.toString())).getParentNode());
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "RequiresSession")
.appendChild(doc.createTextNode(Boolean.toString(subscriptionDescription.requiresSession))).getParentNode());
if (subscriptionDescription.defaultMessageTimeToLive.compareTo(ManagementClientConstants.MAX_DURATION) < 0) {
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "DefaultMessageTimeToLive")
.appendChild(doc.createTextNode(subscriptionDescription.defaultMessageTimeToLive.toString())).getParentNode());
}
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "DeadLetteringOnMessageExpiration")
.appendChild(doc.createTextNode(Boolean.toString(subscriptionDescription.enableDeadLetteringOnMessageExpiration))).getParentNode());
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "DeadLetteringOnFilterEvaluationExceptions")
.appendChild(doc.createTextNode(Boolean.toString(subscriptionDescription.enableDeadLetteringOnFilterEvaluationException))).getParentNode());
if (subscriptionDescription.defaultRule != null) {
sdElement.appendChild(RuleDescriptionSerializer.serializeRule(doc, subscriptionDescription.defaultRule, "DefaultRuleDescription"));
}
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "MaxDeliveryCount")
.appendChild(doc.createTextNode(Integer.toString(subscriptionDescription.maxDeliveryCount))).getParentNode());
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "EnableBatchedOperations")
.appendChild(doc.createTextNode(Boolean.toString(subscriptionDescription.enableBatchedOperations))).getParentNode());
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "Status")
.appendChild(doc.createTextNode(subscriptionDescription.status.name())).getParentNode());
if (subscriptionDescription.forwardTo != null) {
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "ForwardTo")
.appendChild(doc.createTextNode(subscriptionDescription.forwardTo)).getParentNode());
}
if (subscriptionDescription.userMetadata != null) {
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "UserMetadata")
.appendChild(doc.createTextNode(subscriptionDescription.userMetadata)).getParentNode());
}
if (subscriptionDescription.forwardDeadLetteredMessagesTo != null) {
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "ForwardDeadLetteredMessagesTo")
.appendChild(doc.createTextNode(subscriptionDescription.forwardDeadLetteredMessagesTo)).getParentNode());
}
if (subscriptionDescription.autoDeleteOnIdle.compareTo(ManagementClientConstants.MAX_DURATION) < 0) {
sdElement.appendChild(
doc.createElementNS(ManagementClientConstants.SB_NS, "AutoDeleteOnIdle")
.appendChild(doc.createTextNode(subscriptionDescription.autoDeleteOnIdle.toString())).getParentNode());
}
subscriptionDescription.appendUnknownPropertiesToDescriptionElement(sdElement);
// 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 topicName, String xml) {
ArrayList subList = new ArrayList<>();
try {
DocumentBuilderFactory dbf = SerializerUtil.getDocumentBuilderFactory();
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")) {
subList.add(parseFromEntry(topicName, node));
}
}
} catch (ParserConfigurationException | IOException | SAXException e) {
if (TRACE_LOGGER.isErrorEnabled()) {
TRACE_LOGGER.info("Exception while parsing response.", e);
}
if (TRACE_LOGGER.isDebugEnabled()) {
TRACE_LOGGER.debug("XML which failed to parse: \n %s", xml);
}
}
return subList;
}
static SubscriptionDescription parseFromContent(String topicName, String xml) throws MessagingEntityNotFoundException {
try {
DocumentBuilderFactory dbf = SerializerUtil.getDocumentBuilderFactory();
DocumentBuilder db = dbf.newDocumentBuilder();
Document dom = db.parse(new ByteArrayInputStream(xml.getBytes("utf-8")));
Element doc = dom.getDocumentElement();
doc.normalize();
if ("entry".equals(doc.getTagName())) {
return parseFromEntry(topicName, doc);
}
} catch (ParserConfigurationException | IOException | SAXException e) {
if (TRACE_LOGGER.isErrorEnabled()) {
TRACE_LOGGER.info("Exception while parsing response.", e);
}
if (TRACE_LOGGER.isDebugEnabled()) {
TRACE_LOGGER.debug("XML which failed to parse: \n %s", xml);
}
}
throw new MessagingEntityNotFoundException("Subscription was not found");
}
private static SubscriptionDescription parseFromEntry(String topicName, Node xEntry) {
SubscriptionDescription sd = 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":
sd = new SubscriptionDescription(topicName, 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 "LockDuration":
sd.lockDuration = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "RequiresSession":
sd.requiresSession = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "DefaultMessageTimeToLive":
sd.defaultMessageTimeToLive = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "DeadLetteringOnMessageExpiration":
sd.enableDeadLetteringOnMessageExpiration = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "DeadLetteringOnFilterEvaluationExceptions":
sd.enableDeadLetteringOnFilterEvaluationException = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "MaxDeliveryCount":
sd.maxDeliveryCount = Integer.parseInt(element.getFirstChild().getNodeValue());
break;
case "EnableBatchedOperations":
sd.enableBatchedOperations = Boolean.parseBoolean(element.getFirstChild().getNodeValue());
break;
case "Status":
sd.status = EntityStatus.valueOf(element.getFirstChild().getNodeValue());
break;
case "ForwardTo":
Node fwd = element.getFirstChild();
if (fwd != null) {
sd.forwardTo = fwd.getNodeValue();
}
break;
case "UserMetadata":
sd.userMetadata = element.getFirstChild().getNodeValue();
break;
case "ForwardDeadLetteredMessagesTo":
Node fwdDlq = element.getFirstChild();
if (fwdDlq != null) {
sd.forwardDeadLetteredMessagesTo = fwdDlq.getNodeValue();
}
break;
case "AutoDeleteOnIdle":
sd.autoDeleteOnIdle = Duration.parse(element.getFirstChild().getNodeValue());
break;
case "AccessedAt":
case "CreatedAt":
case "MessageCount":
case "SizeInBytes":
case "UpdatedAt":
case "CountDetails":
case "DefaultRuleDescription":
case "EntityAvailabilityStatus":
case "SkippedUpdate":
// Ignore known properties
// Do nothing
break;
default:
sd.addUnknownProperty(element);
break;
}
}
}
break;
default:
break;
}
}
}
return sd;
}
static void normalizeDescription(SubscriptionDescription subscriptionDescription, URI baseAddress) {
if (subscriptionDescription.getForwardTo() != null) {
subscriptionDescription.setForwardTo(EntityNameHelper.normalizeForwardToAddress(subscriptionDescription.getForwardTo(), baseAddress));
}
if (subscriptionDescription.getForwardDeadLetteredMessagesTo() != null) {
subscriptionDescription.setForwardDeadLetteredMessagesTo(EntityNameHelper.normalizeForwardToAddress(subscriptionDescription.getForwardDeadLetteredMessagesTo(), baseAddress));
}
}
}
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