*/
package org.opendaylight.restconf.nb.rfc8040.streams.listeners;
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import java.io.IOException;
-import java.io.StringWriter;
-import java.io.Writer;
import java.time.Instant;
-import javax.xml.stream.XMLStreamException;
-import javax.xml.transform.dom.DOMResult;
+import java.util.Optional;
+import javax.xml.xpath.XPathExpressionException;
+import org.eclipse.jdt.annotation.Nullable;
import org.opendaylight.mdsal.dom.api.DOMNotification;
import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
-import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
-import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
-import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.opendaylight.mdsal.dom.api.DOMNotificationService;
+import org.opendaylight.restconf.common.formatters.JSONNotificationFormatter;
+import org.opendaylight.restconf.common.formatters.NotificationFormatter;
+import org.opendaylight.restconf.common.formatters.NotificationFormatterFactory;
+import org.opendaylight.restconf.common.formatters.XMLNotificationFormatter;
+import org.opendaylight.yang.gen.v1.urn.sal.restconf.event.subscription.rev140708.NotificationOutputTypeGrouping.NotificationOutputType;
import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
-import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
-import org.opendaylight.yangtools.yang.data.codec.gson.JsonWriterFactory;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
/**
* {@link NotificationListenerAdapter} is responsible to track events on notifications.
public class NotificationListenerAdapter extends AbstractCommonSubscriber implements DOMNotificationListener {
private static final Logger LOG = LoggerFactory.getLogger(NotificationListenerAdapter.class);
+ private static final NotificationFormatterFactory JSON_FORMATTER_FACTORY = JSONNotificationFormatter.createFactory(
+ JSONCodecFactorySupplier.RFC7951);
private final String streamName;
- private final SchemaPath path;
- private final String outputType;
+ private final Absolute path;
+ private final NotificationOutputType outputType;
+
+ @VisibleForTesting NotificationFormatter formatter;
+
/**
* Set path of listener and stream name.
* @param streamName Name of the stream.
* @param outputType Type of output on notification (JSON or XML).
*/
- NotificationListenerAdapter(final SchemaPath path, final String streamName, final String outputType) {
- setLocalNameOfPath(path.getLastComponent().getLocalName());
+ NotificationListenerAdapter(final Absolute path, final String streamName, final String outputType) {
+ setLocalNameOfPath(path.lastNodeIdentifier().getLocalName());
+
+ this.outputType = NotificationOutputType.forName(requireNonNull(outputType)).get();
+ this.path = requireNonNull(path);
+ this.streamName = requireNonNull(streamName);
+ checkArgument(!streamName.isEmpty());
+ formatter = getFormatterFactory().getFormatter();
- this.outputType = Preconditions.checkNotNull(outputType);
- this.path = Preconditions.checkNotNull(path);
- Preconditions.checkArgument(streamName != null && !streamName.isEmpty());
- this.streamName = streamName;
+ LOG.debug("output type: {}, {}", outputType, this.outputType);
+ }
+
+ private NotificationFormatterFactory getFormatterFactory() {
+ switch (outputType) {
+ case JSON:
+ return JSON_FORMATTER_FACTORY;
+ case XML:
+ return XMLNotificationFormatter.FACTORY;
+ default:
+ throw new IllegalArgumentException("Unsupported outputType " + outputType);
+ }
+ }
+
+ @Override
+ final void setFilter(final @Nullable String filter) throws XPathExpressionException {
+ final NotificationFormatterFactory factory = getFormatterFactory();
+ formatter = filter == null || filter.isEmpty() ? factory.getFormatter() : factory.getFormatter(filter);
}
/**
*/
@Override
public String getOutputType() {
- return this.outputType;
+ return outputType.getName();
}
@Override
+ @SuppressWarnings("checkstyle:IllegalCatch")
public void onNotification(final DOMNotification notification) {
final Instant now = Instant.now();
- if (!checkStartStop(now, this)) {
+ if (!checkStartStop(now)) {
return;
}
- final SchemaContext schemaContext = schemaHandler.get();
- final String xml = prepareXml(schemaContext, notification);
- if (checkFilter(xml)) {
- post(outputType.equals("JSON") ? prepareJson(schemaContext, notification) : xml);
+ final Optional<String> maybeOutput;
+ try {
+ maybeOutput = formatter.eventData(schemaHandler.get(), notification, now, getLeafNodesOnly(),
+ isSkipNotificationData());
+ } catch (Exception e) {
+ LOG.error("Failed to process notification {}", notification, e);
+ return;
+ }
+ if (maybeOutput.isPresent()) {
+ post(maybeOutput.get());
}
}
*/
@Override
public String getStreamName() {
- return this.streamName;
+ return streamName;
}
/**
*
* @return The configured schema path that points to observing YANG notification schema node.
*/
- public SchemaPath getSchemaPath() {
- return this.path;
- }
-
- /**
- * Creation of JSON from notification data.
- *
- * @return Transformed notification data in JSON format.
- */
- @VisibleForTesting
- String prepareJson(final SchemaContext schemaContext, final DOMNotification notification) {
- final JsonParser jsonParser = new JsonParser();
- final JsonObject json = new JsonObject();
- json.add("ietf-restconf:notification", jsonParser.parse(writeBodyToString(schemaContext, notification)));
- json.addProperty("event-time", ListenerAdapter.toRFC3339(Instant.now()));
- return json.toString();
- }
-
- private static String writeBodyToString(final SchemaContext schemaContext, final DOMNotification notification) {
- final Writer writer = new StringWriter();
- final NormalizedNodeStreamWriter jsonStream = JSONNormalizedNodeStreamWriter.createExclusiveWriter(
- JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02.getShared(schemaContext),
- notification.getType(), null, JsonWriterFactory.createJsonWriter(writer));
- final NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(jsonStream);
- try {
- nodeWriter.write(notification.getBody());
- nodeWriter.close();
- } catch (final IOException e) {
- throw new RestconfDocumentedException("Problem while writing body of notification to JSON. ", e);
- }
- return writer.toString();
+ public Absolute getSchemaPath() {
+ return path;
}
- /**
- * Creation of XML from notification data.
- *
- * @return Transformed notification data in XML format.
- */
- private String prepareXml(final SchemaContext schemaContext, final DOMNotification notification) {
- final Document doc = createDocument();
- final Element notificationElement = basePartDoc(doc);
-
- final Element notificationEventElement = doc.createElementNS(
- "urn:opendaylight:params:xml:ns:yang:controller:md:sal:remote", "create-notification-stream");
- addValuesToNotificationEventElement(doc, notificationEventElement, schemaContext, notification);
- notificationElement.appendChild(notificationEventElement);
-
- return transformDoc(doc);
- }
-
- private void addValuesToNotificationEventElement(final Document doc, final Element element,
- final SchemaContext schemaContext, final DOMNotification notification) {
- try {
- final DOMResult domResult = writeNormalizedNode(notification.getBody(), schemaContext, this.path);
- final Node result = doc.importNode(domResult.getNode().getFirstChild(), true);
- final Element dataElement = doc.createElement("notification");
- dataElement.appendChild(result);
- element.appendChild(dataElement);
- } catch (final IOException e) {
- LOG.error("Error in writer ", e);
- } catch (final XMLStreamException e) {
- LOG.error("Error processing stream", e);
+ public final synchronized void listen(final DOMNotificationService notificationService) {
+ if (!isListening()) {
+ setRegistration(notificationService.registerNotificationListener(this, getSchemaPath()));
}
}
Code Review / netconf.git / blobdiff