--- /dev/null
+/**
+ * Copyright (c) 2014 Inocybe Technologies, and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.dlux.loader.implementation;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
+import org.opendaylight.dlux.loader.Module;
+import org.opendaylight.dlux.loader.exception.DluxLoaderException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Properties;
+
+public class DluxLoaderIndexServlet extends HttpServlet{
+
+ private static final long serialVersionUID = 1L;
+ private static Logger logger = LoggerFactory.getLogger(DluxLoaderIndexServlet.class);
+
+ private String DEFINEJS_PROPERTY = "defineJS";
+
+ private String REQUIREJS_PROPERTY = "requireJS";
+
+ private String ANGULARJS_PROPERTY = "angularJS";
+
+ private final String DEFINEJS_START = "var module = [";
+
+ private final String REQUIREJS_START = "var deps = [";
+
+ private final String ANGULARJS_START = "var e = [";
+
+ private final String end = "];";
+
+ private final String COMMA_QUOTE = ",\'";
+
+ private final String QUOTE = "\'";
+
+ private final String NEWLINE = "\n";
+
+ private final DluxLoader loader;
+
+ private final String UTF_CHARSET = "UTF-8";
+
+ private final String JAVASCRIPT_REPLACE_PROPERTY = "javascriptReplaceString";
+
+ private final String CSS_REPLACE_PROPERTY = "cssReplaceString";
+
+ private final String INDEX_HTML_LOC = "index/index.html";
+
+ private final String RESPONSE_CONTENT_TYPE = "text/html";
+
+ private final String CSS_LINK_START = "<link rel=\"stylesheet\" href=\"";
+
+ private final String CSS_LINK_END = "\" />";
+
+ private final Properties prop;
+
+ private final List<String> indexHTML;
+
+ public DluxLoaderIndexServlet(final DluxLoader loader) throws DluxLoaderException {
+ Preconditions.checkNotNull(loader, "Loader service can not be null");
+ this.loader = loader;
+ this.prop = loadProperties();
+ this.indexHTML = loadStaticHTML();
+ }
+
+ private Properties loadProperties() throws DluxLoaderException {
+
+ Properties prop = new Properties();
+
+ try(InputStream inputStream = DluxLoaderIndexServlet.class.getClassLoader().getResourceAsStream("CommonAppModules.properties")){
+ Preconditions.checkNotNull(inputStream, "Could not load the module properties file");
+ prop.load(inputStream);
+
+ } catch (IOException e) {
+ logger.error("Could not load properties from input stream", e);
+ throw new DluxLoaderException("Dlux Loader Servlet initialization failed. ", e);
+ }
+ return prop;
+ }
+
+ private List<String> loadStaticHTML() throws DluxLoaderException{
+ List<String> indexHTMLContent = new ArrayList<>();
+ try(InputStream indexHTMLStream = DluxLoaderIndexServlet.class.getClassLoader().getResourceAsStream(INDEX_HTML_LOC);
+ BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(indexHTMLStream, UTF_CHARSET))) {
+ String line = bufferedReader.readLine();
+ while(line != null) {
+ indexHTMLContent.add(line);
+ line = bufferedReader.readLine();
+ }
+
+ } catch (IOException e) {
+ logger.error("Could not load index html from input stream", e);
+ throw new DluxLoaderException("Dlux Loader Servlet initialization failed. ", e);
+ }
+ return indexHTMLContent;
+ }
+
+ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+ String jsReplace = prop.getProperty(JAVASCRIPT_REPLACE_PROPERTY);
+ String cssReplace = prop.getProperty(CSS_REPLACE_PROPERTY);
+ Preconditions.checkNotNull(jsReplace, "Global requireJS replace string should be present in properties file");
+ Preconditions.checkNotNull(cssReplace, "Global css replace string should be present in properties file");
+ Preconditions.checkArgument(indexHTML.size() > 0, "HTML file was not loaded properly at servlet initialization");
+
+ StringBuilder inputStringBuilder = new StringBuilder();
+ for (String line : this.indexHTML) {
+ // add global variables
+ if(line.contains(jsReplace)) {
+ inputStringBuilder.append(getModulesString());
+ inputStringBuilder.append(NEWLINE);
+ }
+
+ if(line.contains(cssReplace)) {
+ inputStringBuilder.append(getCSSString());
+ inputStringBuilder.append(NEWLINE);
+ }
+ inputStringBuilder.append(line);
+ inputStringBuilder.append(NEWLINE);
+
+ }
+ response.setContentType(RESPONSE_CONTENT_TYPE);
+ PrintWriter out = response.getWriter();
+ out.print(inputStringBuilder.toString());
+ }
+
+ private String getModulesString() {
+ StringBuilder defineJsBuilder = new StringBuilder();
+ StringBuilder requireJsBuilder = new StringBuilder();
+ StringBuilder angularBuilder = new StringBuilder();
+ defineJsBuilder.append(DEFINEJS_START).append(prop.getProperty(DEFINEJS_PROPERTY));
+ requireJsBuilder.append(REQUIREJS_START).append(prop.getProperty(REQUIREJS_PROPERTY));
+ angularBuilder.append(ANGULARJS_START).append(prop.getProperty(ANGULARJS_PROPERTY));
+ for (Module module: loader.getModules()){
+ requireJsBuilder.append(COMMA_QUOTE).append(module.getRequireJs()).append(QUOTE);
+ angularBuilder.append(COMMA_QUOTE).append(module.getAngularJs()).append(QUOTE);
+ }
+ defineJsBuilder.append(end).append(NEWLINE);
+ requireJsBuilder.append(end).append(NEWLINE);
+ angularBuilder.append(end);
+
+ return defineJsBuilder.toString() + requireJsBuilder.toString() + angularBuilder.toString();
+ }
+
+ private String getCSSString() {
+ StringBuilder cssBuilder = new StringBuilder();
+ for(Module module : loader.getModules()) {
+ if(module.getCssDependencies() == null) {
+ continue;
+ }
+ for(String cssDependency : module.getCssDependencies()) {
+ cssBuilder.append(CSS_LINK_START).append(cssDependency).append(CSS_LINK_END).append(NEWLINE);
+ }
+ }
+
+ return cssBuilder.toString();
+ }
+
+ @VisibleForTesting
+ public Properties getProp() {
+ return this.prop;
+ }
+
+ @VisibleForTesting
+ public List<String> getIndexHTML() {
+ return indexHTML;
+ }
+}
Code Review / ccsdk / apps.git / blobdiff