de.terrestris.shoguncore.rest.PluginRestController Maven / Gradle / Ivy

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package de.terrestris.shoguncore.rest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import de.terrestris.shoguncore.dao.PluginDao;
import de.terrestris.shoguncore.model.Plugin;
import de.terrestris.shoguncore.service.PluginService;

/**
 * @author Nils Bühner
 */
@RestController
@RequestMapping("/plugins")
public class PluginRestController, S extends PluginService>
    extends AbstractRestController {

    /**
     * Default constructor, which calls the type-constructor
     */
    @SuppressWarnings("unchecked")
    public PluginRestController() {
        this((Class) Plugin.class);
    }

    /**
     * Constructor that sets the concrete entity class for the controller.
     * Subclasses MUST call this constructor.
     */
    protected PluginRestController(Class entityClass) {
        super(entityClass);
    }

    /**
     * @return
     */
    @RequestMapping(value = "/{simpleClassName}.js", method = RequestMethod.GET)
    public @ResponseBody
    ResponseEntity getExternalPluginSource(
        @PathVariable String simpleClassName) {

        LOG.debug("Requested to return the sourcecode for plugin " + simpleClassName);

        ResponseEntity responseEntity = null;
        HttpHeaders responseHeaders = new HttpHeaders();

        try {
            responseHeaders.add("Content-Type", "text/javascript; charset=utf-8");

            String classCode = service.getPluginSource(simpleClassName);

            responseEntity = new ResponseEntity(
                classCode,
                responseHeaders,
                HttpStatus.OK
            );

        } catch (Exception e) {
            responseHeaders.add("Content-Type", "text/*");

            String errMsg = "Error while returning the class code for "
                + "external plugin: " + e.getMessage();

            LOG.error(errMsg);

            responseEntity = new ResponseEntity(
                errMsg,
                responseHeaders,
                HttpStatus.INTERNAL_SERVER_ERROR
            );
        }

        return responseEntity;
    }

    /**
     * We have to use {@link Qualifier} to define the correct service here.
     * Otherwise, spring can not decide which service has to be autowired here
     * as there are multiple candidates.
     */
    @Override
    @Autowired
    @Qualifier("pluginService")
    public void setService(S service) {
        this.service = service;
    }
}