Rename restconf-nb-rfc8040 to restconf-nb

[netconf.git] / restconf / restconf-nb / src / main / java / org / opendaylight / restconf / nb / rfc8040 / streams / listeners / DataTreeCandidateFormatter.java

diff --git a/restconf/restconf-nb/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/DataTreeCandidateFormatter.java b/restconf/restconf-nb/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/DataTreeCandidateFormatter.java
new file mode 100644 (file)
index 0000000..4327671
--- /dev/null
+++ b/restconf/restconf-nb/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/DataTreeCandidateFormatter.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.restconf.nb.rfc8040.streams.listeners;
+
+import static org.opendaylight.restconf.nb.rfc8040.streams.listeners.NotificationFormatter.XML_OUTPUT_FACTORY;
+import static org.opendaylight.restconf.nb.rfc8040.streams.listeners.XMLNotificationFormatter.DATA_CHANGE_EVENT_ELEMENT;
+
+import java.io.IOException;
+import java.time.Instant;
+import java.util.Collection;
+import java.util.stream.Collectors;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+import javax.xml.transform.dom.DOMResult;
+import javax.xml.xpath.XPathExpressionException;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+/**
+ * Base formatter for DataTreeCandidates which only handles exporting to a document for filter checking purpose.
+ */
+abstract class DataTreeCandidateFormatter extends EventFormatter<Collection<DataTreeCandidate>> {
+    DataTreeCandidateFormatter() {
+
+    }
+
+    DataTreeCandidateFormatter(final String xpathFilter) throws XPathExpressionException {
+        super(xpathFilter);
+    }
+
+    @Override
+    final void fillDocument(final Document doc, final EffectiveModelContext schemaContext,
+            final Collection<DataTreeCandidate> input) throws IOException {
+        final Element notificationElement = doc.createElementNS("urn:ietf:params:xml:ns:netconf:notification:1.0",
+                "notification");
+        final Element eventTimeElement = doc.createElement("eventTime");
+        eventTimeElement.setTextContent(toRFC3339(Instant.now()));
+        notificationElement.appendChild(eventTimeElement);
+
+        final Element notificationEventElement = doc.createElementNS(
+                "urn:opendaylight:params:xml:ns:yang:controller:md:sal:remote", "data-changed-notification");
+
+        for (DataTreeCandidate candidate : input) {
+            final Element dataChangedElement = doc.createElement(DATA_CHANGE_EVENT_ELEMENT);
+            try {
+                final Element dataElement = doc.createElement("data");
+                final DOMResult domResult = new DOMResult(dataElement);
+                final XMLStreamWriter writer = XML_OUTPUT_FACTORY.createXMLStreamWriter(domResult);
+
+                final SchemaPath path = SchemaPath.create(candidate.getRootPath().getPathArguments().stream()
+                        .filter(p -> !(p instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates))
+                        .map(YangInstanceIdentifier.PathArgument::getNodeType).collect(Collectors.toList()), true);
+
+                writeCandidate(XMLStreamNormalizedNodeStreamWriter.create(writer, schemaContext,
+                        path), candidate);
+
+                dataChangedElement.appendChild(dataElement);
+            } catch (final XMLStreamException e) {
+                throw new IOException("Failed to write notification content", e);
+            }
+            notificationElement.appendChild(notificationEventElement);
+        }
+        doc.appendChild(notificationElement);
+    }
+
+    static void writeCandidate(final NormalizedNodeStreamWriter writer, final DataTreeCandidate candidate)
+            throws IOException {
+        if (candidate.getRootNode().getDataAfter().isPresent()) {
+            try (NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(writer)) {
+                nodeWriter.write(candidate.getRootNode().getDataAfter().get());
+            }
+        }
+    }
+}