Fix incorrect naming on context plugins

[policy/apex-pdp.git] / plugins / plugins-context / plugins-context-schema / plugins-context-schema-avro / src / main / java / org / onap / policy / apex / plugins / context / schema / avro / AvroBytesObjectMapper.java

diff --git a/plugins/plugins-context/plugins-context-schema/plugins-context-schema-avro/src/main/java/org/onap/policy/apex/plugins/context/schema/avro/AvroBytesObjectMapper.java b/plugins/plugins-context/plugins-context-schema/plugins-context-schema-avro/src/main/java/org/onap/policy/apex/plugins/context/schema/avro/AvroBytesObjectMapper.java
new file mode 100644 (file)
index 0000000..dc281a5
--- /dev/null
+++ b/plugins/plugins-context/plugins-context-schema/plugins-context-schema-avro/src/main/java/org/onap/policy/apex/plugins/context/schema/avro/AvroBytesObjectMapper.java
@@ -0,0 +1,149 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. 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.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.plugins.context.schema.avro;
+
+import java.nio.ByteBuffer;
+
+import org.apache.avro.Schema;
+import org.apache.avro.Schema.Type;
+import org.onap.policy.apex.context.ContextRuntimeException;
+import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * This class does string mapping from the Avro BYTES type to a Java byte array.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class AvroBytesObjectMapper implements AvroObjectMapper {
+    // Get a reference to the logger
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(AvroBytesObjectMapper.class);
+
+    // The user keyAvro type for direct mapping
+    private AxKey userKey;
+    private Type avroType;
+
+    // The Apex compatible class
+    private final Class<Byte[]> schemaClass = Byte[].class;
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getJavaClass()
+     */
+    @Override
+    public Class<?> getJavaClass() {
+        return schemaClass;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see
+     * org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#setAvroType(org.apache.
+     * avro. Schema.Type)
+     */
+    @Override
+    public void init(final AxKey intUserKey, final Type initAvroType) {
+        this.userKey = intUserKey;
+        this.avroType = initAvroType;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#createNewinstance(org.
+     * apache. avro.Schema)
+     */
+    @Override
+    public Object createNewInstance(final Schema avroSchema) {
+        // By default, we do not create an instance, normal Java object creation for byte arrays is
+        // sufficient
+        return null;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getAvroType()
+     */
+    @Override
+    public Type getAvroType() {
+        return avroType;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapFromAvro(java.lang.
+     * Object)
+     */
+    @Override
+    public Object mapFromAvro(final Object avroObject) {
+        // The Avro object should be a Utf8 object
+        if (!(avroObject instanceof ByteBuffer)) {
+            final String returnString =
+                    userKey.getID() + ": object \"" + avroObject + "\" of class \"" + avroObject.getClass()
+                            + "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
+            LOGGER.warn(returnString);
+            throw new ContextRuntimeException(returnString);
+        }
+
+        // Cast the byte buffer object so we get access to its methods
+        final ByteBuffer byteBufferAvroObject = (ByteBuffer) avroObject;
+
+        // read the byte buffer into a byte array
+        final byte[] byteArray = new byte[byteBufferAvroObject.remaining()];
+        byteBufferAvroObject.get(byteArray);
+
+        return byteArray;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see
+     * org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapToAvro(java.lang.Object)
+     */
+    @Override
+    public Object mapToAvro(final Object object) {
+        if (object == null) {
+            final String returnString = userKey.getID() + ": cannot encode a null object of class \""
+                    + schemaClass.getCanonicalName() + "\"";
+            LOGGER.warn(returnString);
+            throw new ContextRuntimeException(returnString);
+        }
+
+        // The incoming object should be a byte array
+        if (!(object instanceof byte[])) {
+            final String returnString = userKey.getID() + ": object \"" + object + "\" of class \"" + object.getClass()
+                    + "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
+            LOGGER.warn(returnString);
+            throw new ContextRuntimeException(returnString);
+        }
+
+        // Create a ByteBuffer object to serialize the bytes
+        final ByteBuffer byteBuffer = ByteBuffer.wrap((byte[]) object);
+
+        return byteBuffer;
+    }
+}