org.venice.piazza.servicecontroller.messaging.handlers.DescribeServiceHandler.java Source code

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Here is the source code for org.venice.piazza.servicecontroller.messaging.handlers.DescribeServiceHandler.java

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/*******************************************************************************
 * Copyright 2016, RadiantBlue Technologies, Inc.
 *
 * 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 org.venice.piazza.servicecontroller.messaging.handlers;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.venice.piazza.servicecontroller.data.mongodb.accessors.MongoAccessor;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import model.job.PiazzaJobType;
import model.job.type.DescribeServiceMetadataJob;
import model.service.metadata.Service;
import util.PiazzaLogger;

/**
 * @author mlynum
 * @version 1.0
 */

@Component
public class DescribeServiceHandler implements PiazzaJobHandler {
    private static final Logger LOGGER = LoggerFactory.getLogger(DescribeServiceHandler.class);

    @Autowired
    private MongoAccessor accessor;
    @Autowired
    private PiazzaLogger coreLogger;

    /**
     * Describe service handler
     */
    public ResponseEntity<String> handle(PiazzaJobType jobRequest) {
        coreLogger.log("Describing a service", PiazzaLogger.INFO);
        DescribeServiceMetadataJob job = (DescribeServiceMetadataJob) jobRequest;
        if (job != null) {
            ResponseEntity<String> handleResourceReturn = handle(job.serviceID);
            if (handleResourceReturn.getBody().length() > 0) {
                return new ResponseEntity<>(handleResourceReturn.getBody(), handleResourceReturn.getStatusCode());
            } else {
                coreLogger.log("No result response from the handler, something went wrong", PiazzaLogger.ERROR);
                return new ResponseEntity<>("Could not retrieve service metadata.", HttpStatus.NOT_FOUND);
            }
        } else {
            coreLogger.log("No DescribeServiceMetadataJob provided.", PiazzaLogger.ERROR);
            return new ResponseEntity<>("No DescribeServiceMetadataJob provided.", HttpStatus.BAD_REQUEST);
        }
    }

    public ResponseEntity<String> handle(String serviceId) {
        ResponseEntity<String> responseEntity = null;

        try {
            Service sMetadata = accessor.getServiceById(serviceId);
            ObjectMapper mapper = new ObjectMapper();
            String result = mapper.writeValueAsString(sMetadata);
            responseEntity = new ResponseEntity<String>(result, HttpStatus.OK);
        } catch (JsonProcessingException ex) {
            coreLogger.log("Could not retrieve resourceId " + serviceId, PiazzaLogger.ERROR);
            responseEntity = new ResponseEntity<>("Could not retrieve resourceId " + serviceId,
                    HttpStatus.NOT_FOUND);
        }

        return responseEntity;
    }
}