2 * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.restconf.nb.rfc8040.streams.listeners;
10 import java.time.Instant;
11 import java.time.format.DateTimeFormatter;
12 import java.time.format.DateTimeFormatterBuilder;
13 import java.time.format.DateTimeParseException;
14 import java.time.temporal.ChronoField;
15 import java.time.temporal.TemporalAccessor;
16 import javax.xml.xpath.XPathExpressionException;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.eclipse.jdt.annotation.Nullable;
19 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
20 import org.opendaylight.restconf.nb.rfc8040.FilterParam;
21 import org.opendaylight.restconf.nb.rfc8040.LeafNodesOnlyParam;
22 import org.opendaylight.restconf.nb.rfc8040.SkipNotificationDataParam;
23 import org.opendaylight.restconf.nb.rfc8040.StartTimeParam;
24 import org.opendaylight.restconf.nb.rfc8040.StopTimeParam;
25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
28 * Features of query parameters part of both notifications.
30 abstract class AbstractQueryParams extends AbstractNotificationsData {
31 private static final DateTimeFormatter FORMATTER = new DateTimeFormatterBuilder()
32 .appendValue(ChronoField.YEAR, 4).appendLiteral('-')
33 .appendValue(ChronoField.MONTH_OF_YEAR, 2).appendLiteral('-')
34 .appendValue(ChronoField.DAY_OF_MONTH, 2).appendLiteral('T')
35 .appendValue(ChronoField.HOUR_OF_DAY, 2).appendLiteral(':')
36 .appendValue(ChronoField.MINUTE_OF_HOUR, 2).appendLiteral(':')
37 .appendValue(ChronoField.SECOND_OF_MINUTE, 2)
38 .appendFraction(ChronoField.NANO_OF_SECOND, 0, 9, true)
39 .appendOffset("+HH:MM", "Z").toFormatter();
41 // FIXME: these should be final
42 private Instant start = null;
43 private Instant stop = null;
44 private boolean leafNodesOnly = false;
45 private boolean skipNotificationData = false;
47 public final Instant getStart() {
52 * Set query parameters for listener.
54 * @param startTime Start-time of getting notification.
55 * @param stopTime Stop-time of getting notification.
56 * @param filter Indicates which subset of all possible events are of interest.
57 * @param leafNodesOnly If TRUE, notifications will contain changes of leaf nodes only.
59 @SuppressWarnings("checkstyle:hiddenField")
60 public final void setQueryParams(final StartTimeParam startTime, final StopTimeParam stopTime,
61 final FilterParam filter, final LeafNodesOnlyParam leafNodesOnly,
62 final SkipNotificationDataParam skipNotificationData) {
63 start = startTime == null ? Instant.now() : parseDateAndTime(startTime.value());
64 stop = stopTime == null ? null : parseDateAndTime(stopTime.value());
65 this.leafNodesOnly = leafNodesOnly == null ? false : leafNodesOnly.value();
66 this.skipNotificationData = skipNotificationData == null ? false : skipNotificationData.value();
70 setFilter(filter.paramValue());
71 } catch (XPathExpressionException e) {
72 throw new IllegalArgumentException("Failed to get filter", e);
77 abstract void setFilter(@Nullable String xpathString) throws XPathExpressionException;
80 * Parse input of query parameters - start-time or stop-time - from {@link DateAndTime} format
81 * to {@link Instant} format.
83 * @param uriValue Start-time or stop-time as string in {@link DateAndTime} format.
84 * @return Parsed {@link Instant} by entry.
86 private static @NonNull Instant parseDateAndTime(final DateAndTime dateAndTime) {
87 final TemporalAccessor accessor;
89 accessor = FORMATTER.parse(dateAndTime.getValue());
90 } catch (final DateTimeParseException e) {
91 throw new RestconfDocumentedException("Cannot parse of value in date: " + dateAndTime, e);
93 return Instant.from(accessor);
97 * Check whether this query should only notify about leaf node changes.
99 * @return true if this query should only notify about leaf node changes
101 boolean getLeafNodesOnly() {
102 return leafNodesOnly;
106 * Check whether this query should notify changes without data.
108 * @return true if this query should notify about changes with data
110 public boolean isSkipNotificationData() {
111 return skipNotificationData;
114 @SuppressWarnings("checkstyle:IllegalCatch")
115 <T extends BaseListenerInterface> boolean checkStartStop(final Instant now, final T listener) {
117 if (start.compareTo(now) < 0 && stop.compareTo(now) > 0) {
120 if (stop.compareTo(now) < 0) {
123 } catch (final Exception e) {
124 throw new RestconfDocumentedException("Problem with unregister listener." + e);
127 } else if (start != null) {
128 if (start.compareTo(now) < 0) {