diff options
Diffstat (limited to 'src/main/java/org/onap/aai/spike/event/envelope/EventEnvelopeParser.java')
-rw-r--r-- | src/main/java/org/onap/aai/spike/event/envelope/EventEnvelopeParser.java | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/main/java/org/onap/aai/spike/event/envelope/EventEnvelopeParser.java b/src/main/java/org/onap/aai/spike/event/envelope/EventEnvelopeParser.java new file mode 100644 index 0000000..8b62ffa --- /dev/null +++ b/src/main/java/org/onap/aai/spike/event/envelope/EventEnvelopeParser.java @@ -0,0 +1,64 @@ +/** + * ============LICENSE_START======================================================= + * org.onap.aai + * ================================================================================ + * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved. + * Copyright © 2017-2018 Amdocs + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ +package org.onap.aai.spike.event.envelope; + +import java.util.UUID; +import com.google.gson.JsonElement; +import com.google.gson.JsonParser; +import org.onap.aai.spike.event.incoming.GizmoGraphEvent; +import org.onap.aai.spike.exception.SpikeException; +import org.onap.aai.spike.schema.GraphEventTransformer; + +public class EventEnvelopeParser { + + /** + * Parses the event to extract the content of the body and generate a {@link GizmoGraphEvent} + * object. + * + * @param event event envelope with both header and body properties + * @return the body of the event represented by a {@link GizmoGraphEvent} object + * @throws SpikeException if the event cannot be parsed + */ + public GizmoGraphEvent parseEvent(String event) throws SpikeException { + + GizmoGraphEvent graphEvent = GizmoGraphEvent.fromJson(extractEventBody(event)); + + GraphEventTransformer.populateUUID(graphEvent); + if (graphEvent.getTransactionId() == null || graphEvent.getTransactionId().isEmpty()) { + graphEvent.setTransactionId(UUID.randomUUID().toString()); + } + if (graphEvent.getRelationship() != null) { + GraphEventTransformer.validateEdgeModel(graphEvent.getRelationship()); + } else if (graphEvent.getVertex() != null) { + GraphEventTransformer.validateVertexModel(graphEvent.getVertex()); + } else { + throw new SpikeException("Unable to parse event: " + event); + } + + return graphEvent; + } + + private String extractEventBody(String event) { + JsonParser jsonParser = new JsonParser(); + JsonElement jsonElement = jsonParser.parse(event); + return jsonElement.getAsJsonObject().get("body").toString(); + } +} |