fish.payara.ejb.http.protocol.rs.JsonbLookupMessageBodyReader Maven / Gradle / Ivy

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2019-2021 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
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 * If applicable, add the following below the License Header, with the fields
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package fish.payara.ejb.http.protocol.rs;

import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import jakarta.json.Json;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import jakarta.ws.rs.Consumes;
import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.MessageBodyReader;
import jakarta.ws.rs.ext.Provider;

import fish.payara.ejb.http.protocol.LookupRequest;
import fish.payara.ejb.http.protocol.MediaTypes;

/**
 * Reads the {@link LookupRequest} in case of JSONB serialisation.
 *
 * @author Jan Bernitt
 */
@Provider
@Consumes(MediaTypes.JSON)
public class JsonbLookupMessageBodyReader implements MessageBodyReader {

    @Override
    public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return LookupRequest.class.isAssignableFrom(type);
    }

    @Override
    public LookupRequest readFrom(Class type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream)
            throws IOException, WebApplicationException {
        try (JsonReader jsonReader = Json.createReader(entityStream)) {
            JsonObject request = jsonReader.readObject();
            return new LookupRequest(request.getString("lookup"));
        }
    }

}