eu.rethink.mn.pipeline.handlers.ValidatorPipeHandler.java Source code

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Here is the source code for eu.rethink.mn.pipeline.handlers.ValidatorPipeHandler.java

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/**
* Copyright 2016 PT Inovao e Sistemas SA
* Copyright 2016 INESC-ID
* Copyright 2016 QUOBIS NETWORKS SL
* Copyright 2016 FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V
* Copyright 2016 ORANGE SA
* Copyright 2016 Deutsche Telekom AG
* Copyright 2016 Apizee
* Copyright 2016 TECHNISCHE UNIVERSITAT BERLIN
*
* 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 eu.rethink.mn.pipeline.handlers;

import io.vertx.core.Handler;
import io.vertx.core.json.JsonObject;
import eu.rethink.mn.pipeline.PipeContext;
import eu.rethink.mn.pipeline.message.PipeMessage;

/**
 * @author micaelpedrosa@gmail.com
 * Message interceptor that validates mandatory fields on JSON data.
 */
public class ValidatorPipeHandler implements Handler<PipeContext> {
    public static String NAME = "mn:/validator";

    @Override
    public void handle(PipeContext ctx) {
        final PipeMessage msg = ctx.getMessage();

        //header validation...
        final JsonObject json = msg.getJson();

        if (!json.containsKey("id")) {
            ctx.fail(NAME, "No mandatory field 'id'");
        }

        if (!json.containsKey("type")) {
            ctx.fail(NAME, "No mandatory field 'type'");
        }

        final String from = json.getString("from");
        if (from == null) {
            ctx.fail(NAME, "No mandatory field 'from'");
        }

        final String to = json.getString("to");
        if (to == null) {
            ctx.fail(NAME, "No mandatory field 'to'");
        }

        ctx.next();
    }

}