monasca.log.api.app.unload.JsonPayloadTransformer.java Source code

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Here is the source code for monasca.log.api.app.unload.JsonPayloadTransformer.java

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/*
 * Copyright 2015 FUJITSU LIMITED
 *
 * 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.
 */

package monasca.log.api.app.unload;

import javax.ws.rs.core.MediaType;

import com.google.inject.Inject;
import org.apache.commons.lang3.StringUtils;

import monasca.log.api.app.LogSerializer;
import monasca.log.api.common.PayloadTransformer;
import monasca.log.api.model.Log;

public class JsonPayloadTransformer extends PayloadTransformer {

    private final LogSerializer serializer;

    @Inject
    public JsonPayloadTransformer(final LogSerializer serializer) {
        this.serializer = serializer;
    }

    @Override
    public Log transform(final String from) {
        if (StringUtils.isEmpty(from)) {
            return new Log().setMessage("");
        }
        return this.serializer.logFromJson(from.getBytes());
    }

    @Override
    public MediaType supportsMediaType() {
        return MediaType.APPLICATION_JSON_TYPE;
    }
}