eu.openanalytics.shinyproxy.controllers.AppController.java Source code

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Here is the source code for eu.openanalytics.shinyproxy.controllers.AppController.java

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/**
 * ShinyProxy
 *
 * Copyright (C) 2016-2018 Open Analytics
 *
 * ===========================================================================
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Apache License as published by
 * The Apache Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * Apache License for more details.
 *
 * You should have received a copy of the Apache License
 * along with this program.  If not, see <http://www.apache.org/licenses/>
 */
package eu.openanalytics.shinyproxy.controllers;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
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.servlet.view.RedirectView;

import eu.openanalytics.containerproxy.model.runtime.Proxy;
import eu.openanalytics.containerproxy.model.spec.ProxySpec;

@Controller
public class AppController extends BaseController {

    @RequestMapping(value = "/app/*", method = RequestMethod.GET)
    public String app(ModelMap map, HttpServletRequest request) {
        prepareMap(map, request);

        Proxy proxy = findUserProxy(request);
        String mapping = getProxyEndpoint(proxy);

        map.put("appTitle", getAppTitle(request));
        map.put("container", buildContainerPath(mapping, request));

        return "app";
    }

    @RequestMapping(value = "/app_direct/*", method = RequestMethod.GET)
    public Object appDirect(ModelMap map, HttpServletRequest request) {
        Proxy proxy = getOrStart(request);
        String mapping = getProxyEndpoint(proxy);
        String containerPath = buildContainerPath(mapping, request);
        return new RedirectView(containerPath);
    }

    @RequestMapping(value = "/app/*", method = RequestMethod.POST)
    @ResponseBody
    public Map<String, String> startApp(HttpServletRequest request) {
        Proxy proxy = getOrStart(request);
        String mapping = getProxyEndpoint(proxy);
        String containerPath = buildContainerPath(mapping, request);

        Map<String, String> response = new HashMap<>();
        response.put("containerPath", containerPath);
        response.put("proxyId", proxy.getId());
        return response;
    }

    private Proxy getOrStart(HttpServletRequest request) {
        Proxy proxy = findUserProxy(request);
        if (proxy == null) {
            String specId = getAppName(request);
            ProxySpec spec = proxyService.getProxySpec(specId);
            if (spec == null)
                throw new IllegalArgumentException("Unknown proxy spec: " + specId);
            ProxySpec resolvedSpec = proxyService.resolveProxySpec(spec, null, null);
            proxy = proxyService.startProxy(resolvedSpec, false);
        }
        return proxy;
    }

    private String buildContainerPath(String mapping, HttpServletRequest request) {
        if (mapping == null)
            return "";

        String queryString = request.getQueryString();
        queryString = (queryString == null) ? "" : "?" + queryString;

        String containerPath = getContextPath() + mapping + environment.getProperty("proxy.landing-page", "/")
                + queryString;
        return containerPath;
    }
}