com.sap.ipe.ble.irp.handler.services.MessageService Maven / Gradle / Ivy

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Generic Handler
There is a newer version: 1.0.3
package com.sap.ipe.ble.irp.handler.services;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.sap.cds.services.EventContext;
import com.sap.ipe.ble.irp.exceptions.ExtensionException;
import com.sap.ipe.ble.irp.handler.constants.Constants;
import com.sap.ipe.ble.irp.handler.messages.ExtensionMessage;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.sap.ipe.ble.irp.handler.messages.Messages;
import com.sap.ipe.ble.irp.utils.Translator;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import java.util.Iterator;

/***
 * MessageService is used to show the messages on UI
 */
@Service
public class MessageService {

    private static final String CLASSNAME = "MessageService";

    private final Logger log = LoggerFactory.getLogger(CLASSNAME);


    /***
     * This message is used to show the messages that are returned from the response of remote Handler on the UI
     * @param context event context used
     * @param response response from remote handler
     * @throws ExtensionException custom exception class created
     */
    public void showMessages(EventContext context, JSONObject response) throws ExtensionException {
        try {
            ExtensionMessage extMessageList = new ObjectMapper().readValue(response.toString(),
                    ExtensionMessage.class);
            if (extMessageList.getMessages() != null) {
                for (Iterator iterator = extMessageList.getMessages().stream()
                        .iterator(); iterator.hasNext(); ) {
                    Messages messages = iterator.next();
                    if (messages.getInfo() != null) {
                        context.getMessages().info(messages.getInfo());
                    } else if (messages.getError() != null) {
                        context.getMessages().error(messages.getError());
                    } else if (messages.getWarning() != null) {
                        context.getMessages().warn(messages.getWarning());
                    } else if (messages.getSuccess() != null) {
                        context.getMessages().success(messages.getSuccess());
                    }
                }
            }
        }
        catch (JsonProcessingException exception){
            log.error(Constants.MESSAGE_PROCESSING_ERROR + exception.getLocalizedMessage());
            throw new ExtensionException(Translator.toLocale(Constants.FAIL_ON_UNKNOWN_PROPERTIES));
        }
    }
}