2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.common.endpoints.http.server;
23 import java.io.IOException;
24 import java.io.InputStream;
25 import java.io.InputStreamReader;
26 import java.io.OutputStream;
27 import java.io.OutputStreamWriter;
28 import java.lang.annotation.Annotation;
29 import java.lang.reflect.Type;
30 import java.nio.charset.StandardCharsets;
31 import javax.ws.rs.Consumes;
32 import javax.ws.rs.Produces;
33 import javax.ws.rs.core.MediaType;
34 import javax.ws.rs.core.MultivaluedMap;
35 import javax.ws.rs.ext.MessageBodyReader;
36 import javax.ws.rs.ext.MessageBodyWriter;
37 import javax.ws.rs.ext.Provider;
38 import org.onap.policy.common.utils.coder.CoderException;
39 import org.onap.policy.common.utils.coder.StandardYamlCoder;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
44 * Provider that serializes and de-serializes JSON via gson.
47 @Consumes(MediaType.WILDCARD)
48 @Produces(MediaType.WILDCARD)
49 public class YamlMessageBodyHandler implements MessageBodyReader<Object>, MessageBodyWriter<Object> {
51 public static final Logger logger = LoggerFactory.getLogger(YamlMessageBodyHandler.class);
54 * Constructs the object.
56 public YamlMessageBodyHandler() {
57 logger.info("Accepting YAML for REST calls");
61 public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
62 return canHandle(mediaType);
66 public long getSize(Object object, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
71 public void writeTo(Object object, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
72 MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
74 try (OutputStreamWriter writer = new OutputStreamWriter(entityStream, StandardCharsets.UTF_8)) {
75 new StandardYamlCoder().encode(writer, object);
77 } catch (CoderException e) {
78 throw new IOException(e);
83 public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
84 return canHandle(mediaType);
88 * Determines if this provider can handle the given media type.
90 * @param mediaType the media type of interest
91 * @return {@code true} if this provider handles the given media type, {@code false}
94 private boolean canHandle(MediaType mediaType) {
95 return (mediaType != null && "yaml".equalsIgnoreCase(mediaType.getSubtype()));
99 public Object readFrom(Class<Object> type, Type genericType, Annotation[] annotations, MediaType mediaType,
100 MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException {
102 try (InputStreamReader streamReader = new InputStreamReader(entityStream, StandardCharsets.UTF_8)) {
103 Class<?> clazz = (Class<?>) genericType;
104 return new StandardYamlCoder().decode(streamReader, clazz);
106 } catch (CoderException e) {
107 throw new IOException(e);