1 files changed, 69 insertions, 0 deletions
diff --git a/src/main/java/org/onap/ves/openapi/manager/service/serialization/VesEventsArtifactDeserializer.java b/src/main/java/org/onap/ves/openapi/manager/service/serialization/VesEventsArtifactDeserializer.java
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--- /dev/null
+++ b/src/main/java/org/onap/ves/openapi/manager/service/serialization/VesEventsArtifactDeserializer.java
@@ -0,0 +1,69 @@
+/*
+ * ============LICENSE_START=======================================================
+ * VES-OPENAPI-MANAGER
+ * ================================================================================
+ * Copyright (C) 2021 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.ves.openapi.manager.service.serialization;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import com.fasterxml.jackson.dataformat.yaml.YAMLParser;
+import lombok.extern.log4j.Log4j2;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * VesEventsArtifactDeserializer - Deserializer of byte array of MultiDocument YAML to ObjectNodes
+ */
+@Log4j2
+@Service
+public class VesEventsArtifactDeserializer {
+
+    private static final String COULD_NOT_READ_ARTIFACT_CONTENT_MESSAGE = "Couldn't read artifact content";
+    private final ObjectMapper objectMapper;
+
+    /**
+     * Constructor of VesEventsArtifactDeserializer
+     * @param objectMapper ObjectMapper for YAML parsing
+     */
+    @Autowired
+    public VesEventsArtifactDeserializer(ObjectMapper objectMapper) {
+        this.objectMapper = objectMapper;
+    }
+
+    /**
+     * Deserializes MultiDocument YAML given as byte array
+     * @param data MultiDocument YAML as byte array
+     * @return List of ObjectNodes, each Document is separate ObjectNode
+     */
+    public List<ObjectNode> deserializeMultiDocumentYaml(byte[] data) {
+        List<ObjectNode> events = Collections.emptyList();
+        try {
+            YAMLParser yamlParser = new YAMLFactory().createParser(data);
+            events = objectMapper.readValues(yamlParser, ObjectNode.class).readAll();
+        } catch (IOException e) {
+            log.error(COULD_NOT_READ_ARTIFACT_CONTENT_MESSAGE, e);
+        }
+        return events;
+    }
+}