| /* |
| * 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.registry.flow.diff; |
| |
| import java.util.Objects; |
| |
| import org.apache.nifi.registry.flow.ScheduledState; |
| import org.apache.nifi.registry.flow.VersionedComponent; |
| import org.apache.nifi.registry.flow.VersionedFlowCoordinates; |
| |
| /** |
| * Describes differences between flows as if Flow A is an 'earlier version' of the same flow than Flow B. |
| * This provides verbiage such as "Processor with ID 123 was added to flow." |
| */ |
| public class ConciseEvolvingDifferenceDescriptor implements DifferenceDescriptor { |
| |
| @Override |
| public String describeDifference(final DifferenceType type, final String flowAName, final String flowBName, final VersionedComponent componentA, |
| final VersionedComponent componentB, final String fieldName, final Object valueA, final Object valueB) { |
| |
| final String description; |
| switch (type) { |
| case COMPONENT_ADDED: |
| description = String.format("%s was added", componentB.getComponentType().getTypeName()); |
| break; |
| case COMPONENT_REMOVED: |
| description = String.format("%s was removed", componentA.getComponentType().getTypeName()); |
| break; |
| case SCHEDULED_STATE_CHANGED: |
| if (ScheduledState.DISABLED.equals(valueA)) { |
| description = String.format("%s was enabled", componentA.getComponentType().getTypeName()); |
| } else { |
| description = String.format("%s was disabled", componentA.getComponentType().getTypeName()); |
| } |
| break; |
| case PROPERTY_ADDED: |
| description = String.format("Property '%s' was added", fieldName); |
| break; |
| case PROPERTY_REMOVED: |
| description = String.format("Property '%s' was removed", fieldName); |
| break; |
| case PROPERTY_PARAMETERIZED: |
| description = String.format("Property '%s' was parameterized", fieldName); |
| break; |
| case PROPERTY_PARAMETERIZATION_REMOVED: |
| description = String.format("Property '%s' is no longer a parameter reference", fieldName); |
| break; |
| case VARIABLE_ADDED: |
| description = String.format("Variable '%s' was added", fieldName); |
| break; |
| case VARIABLE_REMOVED: |
| description = String.format("Variable '%s' was removed", fieldName); |
| break; |
| case POSITION_CHANGED: |
| description = "Position was changed"; |
| break; |
| case BENDPOINTS_CHANGED: |
| description = "Connection Bendpoints changed"; |
| break; |
| case VERSIONED_FLOW_COORDINATES_CHANGED: |
| if (valueA instanceof VersionedFlowCoordinates && valueB instanceof VersionedFlowCoordinates) { |
| final VersionedFlowCoordinates coordinatesA = (VersionedFlowCoordinates) valueA; |
| final VersionedFlowCoordinates coordinatesB = (VersionedFlowCoordinates) valueB; |
| |
| // If the two vary only by version, then use a more concise message. If anything else is different, then use a fully explanation. |
| if (Objects.equals(coordinatesA.getRegistryUrl(), coordinatesB.getRegistryUrl()) && Objects.equals(coordinatesA.getBucketId(), coordinatesB.getBucketId()) |
| && Objects.equals(coordinatesA.getFlowId(), coordinatesB.getFlowId()) && coordinatesA.getVersion() != coordinatesB.getVersion()) { |
| |
| description = String.format("Flow Version changed from %s to %s", coordinatesA.getVersion(), coordinatesB.getVersion()); |
| break; |
| } |
| } |
| |
| description = String.format("From '%s' to '%s'", valueA, valueB); |
| break; |
| default: |
| description = String.format("From '%s' to '%s'", valueA, valueB); |
| break; |
| } |
| |
| return description; |
| } |
| |
| } |