| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.nifi.minifi.toolkit.configuration.registry; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.nifi.minifi.commons.schema.common.StringUtil; |
| import org.apache.nifi.registry.flow.ConnectableComponent; |
| import org.apache.nifi.registry.flow.ConnectableComponentType; |
| import org.apache.nifi.registry.flow.VersionedComponent; |
| import org.apache.nifi.registry.flow.VersionedConnection; |
| import org.apache.nifi.registry.flow.VersionedPort; |
| import org.apache.nifi.registry.flow.VersionedProcessGroup; |
| import org.apache.nifi.registry.flow.VersionedRemoteGroupPort; |
| import org.apache.nifi.registry.flow.VersionedRemoteProcessGroup; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.function.Function; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| import static org.apache.nifi.minifi.commons.schema.common.CollectionUtil.nullToEmpty; |
| |
| public class VersionedProcessGroupEnricher { |
| |
| public void enrich(final VersionedProcessGroup versionedProcessGroup) { |
| List<VersionedProcessGroup> allVersionedProcessGroups = getAllVersionedProcessGroups(versionedProcessGroup); |
| |
| Set<VersionedRemoteProcessGroup> remoteProcessGroups = getAll(allVersionedProcessGroups, VersionedProcessGroup::getRemoteProcessGroups).collect(Collectors.toSet()); |
| |
| Map<String, String> connectableNameMap = getAll(allVersionedProcessGroups, VersionedProcessGroup::getProcessors) |
| .collect(Collectors.toMap(VersionedComponent::getIdentifier, VersionedComponent::getName)); |
| |
| Map<String, String> rpgIdToTargetIdMap = new HashMap<>(); |
| |
| for (VersionedRemoteProcessGroup remoteProcessGroup : remoteProcessGroups) { |
| final Set<VersionedRemoteGroupPort> rpgInputPorts = nullToEmpty(remoteProcessGroup.getInputPorts()); |
| final Set<VersionedRemoteGroupPort> rpgOutputPorts = nullToEmpty(remoteProcessGroup.getOutputPorts()); |
| |
| // Map all port DTOs to their respective targetIds |
| rpgIdToTargetIdMap.putAll( |
| Stream.concat(rpgInputPorts.stream(), rpgOutputPorts.stream()) |
| .collect(Collectors.toMap(VersionedRemoteGroupPort::getIdentifier, VersionedRemoteGroupPort::getTargetId))); |
| |
| addConnectables(connectableNameMap, rpgInputPorts, VersionedRemoteGroupPort::getIdentifier, VersionedRemoteGroupPort::getIdentifier); |
| addConnectables(connectableNameMap, rpgOutputPorts, VersionedRemoteGroupPort::getIdentifier, VersionedRemoteGroupPort::getIdentifier); |
| } |
| |
| addConnectables(connectableNameMap, getAll(allVersionedProcessGroups, VersionedProcessGroup::getInputPorts) |
| .collect(Collectors.toList()), VersionedPort::getIdentifier, VersionedPort::getName); |
| |
| addConnectables(connectableNameMap, getAll(allVersionedProcessGroups, VersionedProcessGroup::getOutputPorts) |
| .collect(Collectors.toList()), VersionedPort::getIdentifier, VersionedPort::getName); |
| |
| final Set<VersionedConnection> connections = getAll(allVersionedProcessGroups, VersionedProcessGroup::getConnections).collect(Collectors.toSet()); |
| |
| // Enrich connection endpoints using known names and overriding with targetIds for remote ports |
| for (VersionedConnection connection : connections) { |
| setName(connectableNameMap, connection.getSource(), rpgIdToTargetIdMap); |
| setName(connectableNameMap, connection.getDestination(), rpgIdToTargetIdMap); |
| } |
| |
| // Override any ids that are for Remote Ports to use their target Ids where available |
| connections.stream() |
| .flatMap(connectionDTO -> Stream.of(connectionDTO.getSource(), connectionDTO.getDestination())) |
| .filter(connectable -> (connectable.getType() == ConnectableComponentType.REMOTE_OUTPUT_PORT || connectable.getType() == ConnectableComponentType.REMOTE_INPUT_PORT)) |
| .forEach(connectable -> connectable.setId(Optional.ofNullable(rpgIdToTargetIdMap.get(connectable.getId())).orElse(connectable.getId()))); |
| |
| // Establish unique names for connections |
| for (VersionedConnection connection : connections) { |
| if (StringUtil.isNullOrEmpty(connection.getName())) { |
| StringBuilder name = new StringBuilder(); |
| ConnectableComponent connectionSource = connection.getSource(); |
| name.append(determineValueForConnectable(connectionSource, rpgIdToTargetIdMap)); |
| |
| name.append("/"); |
| if (connection.getSelectedRelationships() != null && connection.getSelectedRelationships().size() > 0) { |
| name.append(connection.getSelectedRelationships().iterator().next()); |
| } |
| |
| name.append("/"); |
| ConnectableComponent connectionDestination = connection.getDestination(); |
| name.append(determineValueForConnectable(connectionDestination, rpgIdToTargetIdMap)); |
| |
| connection.setName(name.toString()); |
| } |
| } |
| nullToEmpty(versionedProcessGroup.getProcessGroups()).stream().forEach(pg -> enrich(pg)); |
| } |
| |
| private static String determineValueForConnectable(ConnectableComponent connectable, Map<String, String> idOverrideMap) { |
| String connectionName = ""; |
| if (connectable != null) { |
| connectionName = connectable.getName(); |
| // If no name is specified, determine the appropriate id to use, preferring any overrides specified |
| if (StringUtils.isBlank(connectionName)) { |
| connectionName = idOverrideMap.containsKey(connectable.getId()) ? idOverrideMap.get(connectable.getId()) : connectable.getId(); |
| } |
| } |
| return connectionName; |
| } |
| |
| private static <T> Stream<T> getAll(List<VersionedProcessGroup> allVersionedProcessGroups, Function<VersionedProcessGroup, Collection<T>> accessor) { |
| return allVersionedProcessGroups.stream().flatMap(f -> accessor.apply(f).stream()).filter(Objects::nonNull); |
| } |
| |
| private static List<VersionedProcessGroup> getAllVersionedProcessGroups(VersionedProcessGroup versionedProcessGroup) { |
| List<VersionedProcessGroup> result = new ArrayList<>(); |
| getAllVersionedProcessGroups(versionedProcessGroup, result); |
| return result; |
| } |
| |
| private static void getAllVersionedProcessGroups(VersionedProcessGroup versionedProcessGroup, List<VersionedProcessGroup> result) { |
| result.add(versionedProcessGroup); |
| nullToEmpty(versionedProcessGroup.getProcessGroups()).stream().forEach(f -> getAllVersionedProcessGroups(f, result)); |
| } |
| |
| private static void setName(Map<String, String> connectableNameMap, ConnectableComponent connectable, Map<String, String> nameOverrides) { |
| if (connectable != null) { |
| final String name = connectableNameMap.get(connectable.getId()); |
| if (name != null) { |
| connectable.setName(Optional.ofNullable(nameOverrides.get(connectable.getId())).orElse(name)); |
| } |
| } |
| } |
| |
| private static <T> void addConnectables(Map<String, String> connectableNameMap, Collection<T> hasIdAndNames, Function<T, String> idGetter, Function<T, String> nameGetter) { |
| if (hasIdAndNames != null) { |
| for (T hasIdAndName : hasIdAndNames) { |
| String id = idGetter.apply(hasIdAndName); |
| String name = nameGetter.apply(hasIdAndName); |
| if (!StringUtil.isNullOrEmpty(name)) { |
| connectableNameMap.put(id, name); |
| } |
| } |
| } |
| } |
| |
| } |