| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.ui.impl.topo; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import com.google.common.base.Strings; |
| import org.onlab.osgi.ServiceDirectory; |
| import org.onlab.packet.IpAddress; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.incubator.net.PortStatisticsService; |
| import org.onosproject.incubator.net.tunnel.TunnelService; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.Annotated; |
| import org.onosproject.net.Annotations; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.flow.FlowRuleService; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.net.intent.IntentService; |
| import org.onosproject.net.link.LinkService; |
| import org.onosproject.net.region.Region; |
| import org.onosproject.net.statistic.StatisticService; |
| import org.onosproject.net.topology.TopologyService; |
| import org.onosproject.ui.GlyphConstants; |
| import org.onosproject.ui.JsonUtils; |
| import org.onosproject.ui.UiExtensionService; |
| import org.onosproject.ui.UiPreferencesService; |
| import org.onosproject.ui.UiTopoMap; |
| import org.onosproject.ui.UiTopoMapFactory; |
| import org.onosproject.ui.model.topo.UiClusterMember; |
| import org.onosproject.ui.model.topo.UiDevice; |
| import org.onosproject.ui.model.topo.UiElement; |
| import org.onosproject.ui.model.topo.UiHost; |
| import org.onosproject.ui.model.topo.UiLink; |
| import org.onosproject.ui.model.topo.UiLinkId; |
| import org.onosproject.ui.model.topo.UiModelEvent; |
| import org.onosproject.ui.model.topo.UiNode; |
| import org.onosproject.ui.model.topo.UiRegion; |
| import org.onosproject.ui.model.topo.UiSynthLink; |
| import org.onosproject.ui.model.topo.UiTopoLayout; |
| import org.onosproject.ui.topo.LayoutLocation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onosproject.net.AnnotationKeys.GRID_X; |
| import static org.onosproject.net.AnnotationKeys.GRID_Y; |
| import static org.onosproject.net.AnnotationKeys.LATITUDE; |
| import static org.onosproject.net.AnnotationKeys.LONGITUDE; |
| import static org.onosproject.ui.model.topo.UiNode.LAYER_DEFAULT; |
| import static org.onosproject.ui.topo.LayoutLocation.fromCompactListString; |
| |
| /** |
| * Facility for creating JSON messages to send to the topology view in the |
| * Web client. |
| */ |
| public class Topo2Jsonifier { |
| |
| private static final String E_DEF_NOT_LAST = |
| "UiNode.LAYER_DEFAULT not last in layer list"; |
| private static final String E_UNKNOWN_UI_NODE = |
| "Unknown subclass of UiNode: "; |
| |
| private static final String CONTEXT_KEY_DELIM = "_"; |
| private static final String NO_CONTEXT = ""; |
| private static final String ZOOM_KEY = "layoutZoom"; |
| |
| private static final String REGION = "region"; |
| private static final String DEVICE = "device"; |
| private static final String HOST = "host"; |
| private static final String TYPE = "type"; |
| private static final String SUBJECT = "subject"; |
| private static final String DATA = "data"; |
| private static final String MEMO = "memo"; |
| |
| private static final String GEO = "geo"; |
| private static final String GRID = "grid"; |
| private static final String PEER_LOCATIONS = "peerLocations"; |
| private static final String LOCATION = "location"; |
| private static final String LOC_TYPE = "locType"; |
| private static final String LAT_OR_Y = "latOrY"; |
| private static final String LONG_OR_X = "longOrX"; |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final ObjectMapper mapper = new ObjectMapper(); |
| |
| // preferences are stored per user name... |
| private final String userName; |
| |
| private ServiceDirectory directory; |
| private ClusterService clusterService; |
| private DeviceService deviceService; |
| private LinkService linkService; |
| private HostService hostService; |
| private MastershipService mastershipService; |
| private IntentService intentService; |
| private FlowRuleService flowService; |
| private StatisticService flowStatsService; |
| private PortStatisticsService portStatsService; |
| private TopologyService topologyService; |
| private TunnelService tunnelService; |
| private UiExtensionService uiextService; |
| private UiPreferencesService prefService; |
| |
| |
| // NOTE: we'll stick this here for now, but maybe there is a better home? |
| // (this is not distributed across the cluster) |
| private static Map<String, ObjectNode> metaUi = new ConcurrentHashMap<>(); |
| |
| |
| /** |
| * Creates an instance with a reference to the services directory, so that |
| * additional information about network elements may be looked up on |
| * on the fly. |
| * |
| * @param directory service directory |
| * @param userName logged in user name |
| */ |
| public Topo2Jsonifier(ServiceDirectory directory, String userName) { |
| this.directory = checkNotNull(directory, "Directory cannot be null"); |
| this.userName = checkNotNull(userName, "User name cannot be null"); |
| |
| clusterService = directory.get(ClusterService.class); |
| deviceService = directory.get(DeviceService.class); |
| linkService = directory.get(LinkService.class); |
| hostService = directory.get(HostService.class); |
| mastershipService = directory.get(MastershipService.class); |
| intentService = directory.get(IntentService.class); |
| flowService = directory.get(FlowRuleService.class); |
| flowStatsService = directory.get(StatisticService.class); |
| portStatsService = directory.get(PortStatisticsService.class); |
| topologyService = directory.get(TopologyService.class); |
| tunnelService = directory.get(TunnelService.class); |
| uiextService = directory.get(UiExtensionService.class); |
| prefService = directory.get(UiPreferencesService.class); |
| } |
| |
| // for unit testing |
| Topo2Jsonifier() { |
| userName = "(unit-test)"; |
| } |
| |
| private ObjectNode objectNode() { |
| return mapper.createObjectNode(); |
| } |
| |
| private ArrayNode arrayNode() { |
| return mapper.createArrayNode(); |
| } |
| |
| private String nullIsEmpty(Object o) { |
| return o == null ? "" : o.toString(); |
| } |
| |
| |
| /** |
| * Returns a JSON representation of the cluster members (ONOS instances). |
| * |
| * @param instances the instance model objects |
| * @return a JSON representation of the data |
| */ |
| ObjectNode instances(List<UiClusterMember> instances) { |
| NodeId local = clusterService.getLocalNode().id(); |
| ObjectNode payload = objectNode(); |
| |
| ArrayNode members = arrayNode(); |
| payload.set("members", members); |
| for (UiClusterMember member : instances) { |
| members.add(json(member, member.id().equals(local))); |
| } |
| |
| return payload; |
| } |
| |
| private ObjectNode json(UiClusterMember member, boolean isUiAttached) { |
| int switchCount = mastershipService.getDevicesOf(member.id()).size(); |
| ControllerNode.State state = clusterService.getState(member.id()); |
| return objectNode() |
| .put("id", member.id().toString()) |
| .put("ip", member.ip().toString()) |
| .put("online", state.isActive()) |
| .put("ready", state.isReady()) |
| .put("uiAttached", isUiAttached) |
| .put("switches", switchCount); |
| } |
| |
| /** |
| * Returns a JSON representation of the layout to use for displaying in |
| * the topology view. The identifiers and names of regions from the |
| * current to the root is included, so that the bread-crumb widget can |
| * be rendered. |
| * |
| * @param layout the layout to transform |
| * @param crumbs list of layouts in bread-crumb order |
| * @return a JSON representation of the data |
| */ |
| ObjectNode layout(UiTopoLayout layout, List<UiTopoLayout> crumbs) { |
| ObjectNode result = objectNode() |
| .put("id", layout.id().toString()) |
| .put("parent", nullIsEmpty(layout.parent())) |
| .put("region", nullIsEmpty(layout.regionId())) |
| .put("regionName", UiRegion.safeName(layout.region())); |
| addCrumbs(result, crumbs); |
| addBgRef(result, layout); |
| return result; |
| } |
| |
| private void addBgRef(ObjectNode result, UiTopoLayout layout) { |
| String mapId = layout.geomap(); |
| String sprId = layout.sprites(); |
| |
| if (mapId != null) { |
| result.put("bgType", GEO).put("bgId", mapId); |
| addMapParameters(result, mapId); |
| } else if (sprId != null) { |
| result.put("bgType", GRID).put("bgId", sprId); |
| } |
| |
| attachZoomData(result, layout); |
| } |
| |
| private void attachZoomData(ObjectNode result, UiTopoLayout layout) { |
| |
| ObjectNode zoomData = objectNode(); |
| |
| // first, set configured scale and offset |
| addCfgZoomData(zoomData, layout); |
| |
| // next, retrieve user-set zoom data, if we have it |
| String rid = layout.regionId().toString(); |
| ObjectNode userZoom = metaUi.get(contextKey(rid, ZOOM_KEY)); |
| if (userZoom != null) { |
| zoomData.set("usr", userZoom); |
| } |
| result.set("bgZoom", zoomData); |
| } |
| |
| private void addCfgZoomData(ObjectNode data, UiTopoLayout layout) { |
| ObjectNode zoom = objectNode(); |
| zoom.put("scale", layout.scale()); |
| zoom.put("offsetX", layout.offsetX()); |
| zoom.put("offsetY", layout.offsetY()); |
| data.set("cfg", zoom); |
| } |
| |
| private void addMapParameters(ObjectNode result, String mapId) { |
| |
| // TODO: This ought to be written more efficiently. |
| |
| // ALSO: Should retrieving a UiTopoMap by ID be something that |
| // the UiExtensionService provides, along with other |
| // useful lookups? |
| // |
| // Or should it remain very basic / general? |
| // |
| // return uiextService.getTopoMap(String mapId); |
| |
| final UiTopoMap[] map = {null}; |
| |
| uiextService.getExtensions().forEach(ext -> { |
| UiTopoMapFactory factory = ext.topoMapFactory(); |
| |
| // TODO: use .stream().filter(...) here |
| if (map[0] == null && factory != null) { |
| List<UiTopoMap> topoMaps = factory.geoMaps(); |
| |
| topoMaps.forEach(m -> { |
| if (map[0] == null && m.id().equals(mapId)) { |
| map[0] = m; |
| } |
| }); |
| } |
| }); |
| |
| UiTopoMap m = map[0]; |
| if (m != null) { |
| result.put("bgDesc", m.description()) |
| .put("bgFilePath", m.filePath()) |
| .put("bgDefaultScale", m.scale()); |
| } else { |
| result.put("bgWarn", "no map registered with id: " + mapId); |
| } |
| } |
| |
| private void addCrumbs(ObjectNode result, List<UiTopoLayout> crumbs) { |
| ArrayNode trail = arrayNode(); |
| crumbs.forEach(c -> { |
| ObjectNode n = objectNode() |
| .put("id", c.regionId().toString()) |
| .put("name", UiRegion.safeName(c.region())); |
| trail.add(n); |
| }); |
| result.set("crumbs", trail); |
| } |
| |
| /** |
| * Returns a JSON representation of the region to display in the topology |
| * view. |
| * |
| * @param region the region to transform to JSON |
| * @param subRegions the subregions within this region |
| * @param links the links within this region |
| * @return a JSON representation of the data |
| */ |
| ObjectNode region(UiRegion region, Set<UiRegion> subRegions, |
| List<UiSynthLink> links) { |
| ObjectNode payload = objectNode(); |
| if (region == null) { |
| payload.put("note", "no-region"); |
| return payload; |
| } |
| |
| String ridStr = region.idAsString(); |
| |
| payload.put("id", ridStr); |
| payload.set("subregions", jsonSubRegions(ridStr, subRegions)); |
| payload.set("links", jsonLinks(links)); |
| |
| List<String> layerTags = region.layerOrder(); |
| List<Set<UiNode>> splitDevices = splitByLayer(layerTags, region.devices()); |
| List<Set<UiNode>> splitHosts = splitByLayer(layerTags, region.hosts()); |
| |
| payload.set("devices", jsonGrouped(ridStr, splitDevices)); |
| payload.set("hosts", jsonGrouped(ridStr, splitHosts)); |
| payload.set("layerOrder", jsonStrings(layerTags)); |
| |
| if (!region.isRoot()) { |
| addPeerLocations(payload, region.backingRegion()); |
| } |
| |
| return payload; |
| } |
| |
| private ArrayNode jsonSubRegions(String ridStr, Set<UiRegion> subregions) { |
| ArrayNode kids = arrayNode(); |
| subregions.forEach(s -> kids.add(jsonClosedRegion(ridStr, s))); |
| return kids; |
| } |
| |
| protected JsonNode jsonLinks(List<UiSynthLink> links) { |
| return collateSynthLinks(links); |
| } |
| |
| private ArrayNode jsonStrings(List<String> strings) { |
| ArrayNode array = arrayNode(); |
| strings.forEach(array::add); |
| return array; |
| } |
| |
| private ArrayNode jsonGrouped(String ridStr, List<Set<UiNode>> groupedNodes) { |
| ArrayNode result = arrayNode(); |
| groupedNodes.forEach(g -> { |
| ArrayNode subset = arrayNode(); |
| g.forEach(n -> subset.add(json(ridStr, n))); |
| result.add(subset); |
| }); |
| return result; |
| } |
| |
| /** |
| * Creates a JSON representation of a UI element. |
| * |
| * @param element the source element |
| * @return a JSON representation of that element |
| */ |
| public ObjectNode jsonUiElement(UiElement element) { |
| if (element instanceof UiNode) { |
| return json(NO_CONTEXT, (UiNode) element); |
| } |
| if (element instanceof UiLink) { |
| return json((UiLink) element); |
| } |
| if (element instanceof UiClusterMember) { |
| return json((UiClusterMember) element); |
| } |
| |
| // Unrecognized UiElement class |
| return objectNode() |
| .put("warning", "unknown UiElement... cannot encode") |
| .put("javaclass", element.getClass().toString()); |
| } |
| |
| /** |
| * Creates a JSON representation of a UI model event. |
| * |
| * @param modelEvent the source model event |
| * @return a JSON representation of that event |
| */ |
| public ObjectNode jsonEvent(UiModelEvent modelEvent) { |
| ObjectNode payload = objectNode(); |
| payload.put(TYPE, enumToString(modelEvent.type())); |
| payload.put(SUBJECT, modelEvent.subject().idAsString()); |
| payload.set(DATA, modelEvent.data()); |
| payload.put(MEMO, modelEvent.memo()); |
| return payload; |
| } |
| |
| // TODO: Investigate why we can't do this inline |
| private String enumToString(Enum<?> e) { |
| return e.toString(); |
| } |
| |
| // Returns the name of the master node for the specified device id. |
| private String master(DeviceId deviceId) { |
| NodeId master = mastershipService.getMasterFor(deviceId); |
| return master != null ? master.toString() : ""; |
| } |
| |
| private ObjectNode json(String ridStr, UiNode node) { |
| if (node instanceof UiRegion) { |
| return jsonClosedRegion(ridStr, (UiRegion) node); |
| } |
| if (node instanceof UiDevice) { |
| return json(ridStr, (UiDevice) node); |
| } |
| if (node instanceof UiHost) { |
| return json(ridStr, (UiHost) node); |
| } |
| throw new IllegalStateException(E_UNKNOWN_UI_NODE + node.getClass()); |
| } |
| |
| private ObjectNode json(String ridStr, UiDevice device) { |
| ObjectNode node = objectNode() |
| .put("id", device.idAsString()) |
| .put("nodeType", DEVICE) |
| .put("type", device.type()) |
| .put("online", deviceService.isAvailable(device.id())) |
| .put("master", master(device.id())) |
| .put("layer", device.layer()); |
| Device d = device.backingDevice(); |
| if (d != null) { |
| addProps(node, d); |
| addGeoGridLocation(node, d); |
| } |
| addMetaUi(node, ridStr, device.idAsString()); |
| |
| return node; |
| } |
| |
| private void addProps(ObjectNode node, Annotated a) { |
| Annotations annot = a.annotations(); |
| ObjectNode props = objectNode(); |
| if (annot != null) { |
| annot.keys().forEach(k -> props.put(k, annot.value(k))); |
| } |
| node.set("props", props); |
| } |
| |
| private void addMetaUi(ObjectNode node, String ridStr, String metaInstanceId) { |
| String key = contextKey(ridStr, metaInstanceId); |
| ObjectNode meta = metaUi.get(key); |
| if (meta != null) { |
| node.set("metaUi", meta); |
| } |
| } |
| |
| private void addGeoGridLocation(ObjectNode node, Annotated a) { |
| List<String> latLongData = getAnnotValues(a, LATITUDE, LONGITUDE); |
| List<String> gridYXdata = getAnnotValues(a, GRID_Y, GRID_X); |
| |
| if (latLongData != null) { |
| attachLocation(node, GEO, latLongData); |
| } else if (gridYXdata != null) { |
| attachLocation(node, GRID, gridYXdata); |
| } |
| } |
| |
| private void attachLocation(ObjectNode node, String locType, |
| List<String> values) { |
| try { |
| double latOrY = Double.parseDouble(values.get(0)); |
| double longOrX = Double.parseDouble(values.get(1)); |
| ObjectNode loc = objectNode() |
| .put(LOC_TYPE, locType) |
| .put(LAT_OR_Y, latOrY) |
| .put(LONG_OR_X, longOrX); |
| node.set(LOCATION, loc); |
| |
| } catch (NumberFormatException e) { |
| log.warn("Invalid {} data: lat/Y={}, long/X={}", |
| locType, values.get(0), values.get(1)); |
| } |
| } |
| |
| private void addPeerLocations(ObjectNode node, Region r) { |
| String compact = r.annotations().value(PEER_LOCATIONS); |
| if (!Strings.isNullOrEmpty(compact)) { |
| List<LayoutLocation> locs = fromCompactListString(compact); |
| |
| ObjectNode o = objectNode(); |
| for (LayoutLocation ll : locs) { |
| ObjectNode lnode = objectNode() |
| .put(LOC_TYPE, ll.locType().toString()) |
| .put(LAT_OR_Y, ll.latOrY()) |
| .put(LONG_OR_X, ll.longOrX()); |
| o.set(ll.id(), lnode); |
| } |
| |
| node.set(PEER_LOCATIONS, o); |
| } |
| } |
| |
| private void addIps(ObjectNode node, Host h) { |
| Set<IpAddress> ips = h.ipAddresses(); |
| |
| ArrayNode a = arrayNode(); |
| for (IpAddress ip : ips) { |
| a.add(ip.toString()); |
| } |
| |
| node.set("ips", a); |
| } |
| |
| // return list of string values from annotated instance, for given keys |
| // return null if any keys are not present |
| List<String> getAnnotValues(Annotated a, String... annotKeys) { |
| List<String> result = new ArrayList<>(annotKeys.length); |
| for (String k : annotKeys) { |
| String v = a.annotations().value(k); |
| if (v == null) { |
| return null; |
| } |
| result.add(v); |
| } |
| return result; |
| } |
| |
| // derive JSON object from annotations |
| private ObjectNode props(Annotations annotations) { |
| ObjectNode p = objectNode(); |
| if (annotations != null) { |
| annotations.keys().forEach(k -> p.put(k, annotations.value(k))); |
| } |
| return p; |
| } |
| |
| private ObjectNode json(String ridStr, UiHost host) { |
| ObjectNode node = objectNode() |
| .put("id", host.idAsString()) |
| .put("nodeType", HOST) |
| .put("layer", host.layer()); |
| // TODO: complete host details |
| Host h = host.backingHost(); |
| |
| // h will be null, for example, after a HOST_REMOVED event |
| if (h != null) { |
| addIps(node, h); |
| addProps(node, h); |
| addGeoGridLocation(node, h); |
| node.put("configured", h.configured()); |
| } |
| addMetaUi(node, ridStr, host.idAsString()); |
| |
| return node; |
| } |
| |
| private ArrayNode collateSynthLinks(List<UiSynthLink> links) { |
| Map<UiLinkId, Set<UiSynthLink>> collation = new HashMap<>(); |
| |
| // first, group together the synthlinks into sets per ID... |
| for (UiSynthLink sl : links) { |
| UiLinkId id = sl.link().id(); |
| Set<UiSynthLink> rollup = |
| collation.computeIfAbsent(id, k -> new HashSet<>()); |
| rollup.add(sl); |
| } |
| |
| // now add json nodes per set, and return the array of them |
| ArrayNode array = arrayNode(); |
| for (UiLinkId id : collation.keySet()) { |
| array.add(json(collation.get(id))); |
| } |
| return array; |
| } |
| |
| private ObjectNode json(Set<UiSynthLink> memberSet) { |
| ArrayNode rollup = arrayNode(); |
| ObjectNode node = null; |
| |
| boolean first = true; |
| for (UiSynthLink member : memberSet) { |
| UiLink link = member.link(); |
| if (first) { |
| node = json(link); |
| first = false; |
| } |
| rollup.add(json(member.original())); |
| } |
| if (node != null) { |
| node.set("rollup", rollup); |
| } |
| return node; |
| } |
| |
| private ObjectNode json(UiLink link) { |
| ObjectNode data = objectNode() |
| .put("id", link.idAsString()) |
| .put("epA", link.endPointA()) |
| .put("epB", link.endPointB()) |
| .put("type", link.type()); |
| String pA = link.endPortA(); |
| String pB = link.endPortB(); |
| if (pA != null) { |
| data.put("portA", pA); |
| } |
| if (pB != null) { |
| data.put("portB", pB); |
| } |
| return data; |
| } |
| |
| private ObjectNode json(UiClusterMember member) { |
| ControllerNode.State state = clusterService.getState(member.id()); |
| return objectNode() |
| .put("id", member.idAsString()) |
| .put("ip", member.ip().toString()) |
| .put("online", state.isActive()) |
| .put("ready", state.isReady()) |
| .put(GlyphConstants.UI_ATTACHED, |
| member.backingNode().equals(clusterService.getLocalNode())); |
| } |
| |
| private ObjectNode jsonClosedRegion(String ridStr, UiRegion region) { |
| ObjectNode node = objectNode() |
| .put("id", region.idAsString()) |
| .put("name", region.name()) |
| .put("nodeType", REGION) |
| .put("nDevs", region.deviceCount()) |
| .put("nHosts", region.hostCount()); |
| // TODO: device and host counts should take into account any nested |
| // subregions. i.e. should be the sum of all devices/hosts in |
| // all descendant subregions. |
| |
| Region r = region.backingRegion(); |
| if (r != null) { |
| // add data injected via network configuration script |
| addGeoGridLocation(node, r); |
| addProps(node, r); |
| } |
| |
| // this may contain location data, as dragged by user |
| // (which should take precedence, over configured data) |
| addMetaUi(node, ridStr, region.idAsString()); |
| return node; |
| } |
| |
| /** |
| * Returns a JSON array representation of a set of regions/devices. Note |
| * that the information is sufficient for showing regions as nodes. |
| * THe region ID string defines the context (which region) the node is |
| * being displayed in. |
| * |
| * @param ridStr region-id string |
| * @param nodes the nodes |
| * @return a JSON representation of the nodes |
| */ |
| public ArrayNode closedNodes(String ridStr, Set<UiNode> nodes) { |
| ArrayNode array = arrayNode(); |
| for (UiNode node : nodes) { |
| if (node instanceof UiRegion) { |
| array.add(jsonClosedRegion(ridStr, (UiRegion) node)); |
| } else if (node instanceof UiDevice) { |
| array.add(json(ridStr, (UiDevice) node)); |
| } else { |
| log.warn("Unexpected node instance: {}", node.getClass()); |
| } |
| } |
| return array; |
| } |
| |
| // package-private for unit testing |
| List<Set<UiNode>> splitByLayer(List<String> layerTags, |
| Set<? extends UiNode> nodes) { |
| final int nLayers = layerTags.size(); |
| if (!layerTags.get(nLayers - 1).equals(LAYER_DEFAULT)) { |
| throw new IllegalArgumentException(E_DEF_NOT_LAST); |
| } |
| |
| List<Set<UiNode>> splitList = new ArrayList<>(layerTags.size()); |
| Map<String, Set<UiNode>> byLayer = new HashMap<>(layerTags.size()); |
| |
| for (String tag : layerTags) { |
| Set<UiNode> set = new HashSet<>(); |
| byLayer.put(tag, set); |
| splitList.add(set); |
| } |
| |
| for (UiNode n : nodes) { |
| String which = n.layer(); |
| if (!layerTags.contains(which)) { |
| which = LAYER_DEFAULT; |
| } |
| byLayer.get(which).add(n); |
| } |
| |
| return splitList; |
| } |
| |
| |
| private String contextKey(String context, String key) { |
| return context + CONTEXT_KEY_DELIM + key; |
| } |
| |
| /** |
| * Stores the memento for an element. |
| * This method assumes the payload has an id String, memento ObjectNode. |
| * The region-id string is used as a context within which to store the |
| * memento. |
| * |
| * @param ridStr region ID string |
| * @param payload event payload |
| */ |
| void updateMeta(String ridStr, ObjectNode payload) { |
| |
| String id = JsonUtils.string(payload, "id"); |
| String key = contextKey(ridStr, id); |
| metaUi.put(key, JsonUtils.node(payload, "memento")); |
| |
| log.debug("Storing metadata for {}", key); |
| } |
| } |