X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=sdnr%2Fwireless-transport%2Fcode-Carbon-SR1%2Fapps%2Fdlux%2Floader%2Fimpl%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fdlux%2Floader%2Fimplementation%2FDluxLoaderIndexServlet.java;fp=sdnr%2Fwireless-transport%2Fcode-Carbon-SR1%2Fapps%2Fdlux%2Floader%2Fimpl%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fdlux%2Floader%2Fimplementation%2FDluxLoaderIndexServlet.java;h=55929c0bc1e32c536ea7e994e3267519128c4591;hb=27fb2d06608fbb070ae2c15a5580a4f5b2423d15;hp=0000000000000000000000000000000000000000;hpb=60315525ab5e7c12a9f47c409092e8dba6ad656d;p=ccsdk%2Fapps.git

diff --git a/sdnr/wireless-transport/code-Carbon-SR1/apps/dlux/loader/impl/src/main/java/org/opendaylight/dlux/loader/implementation/DluxLoaderIndexServlet.java b/sdnr/wireless-transport/code-Carbon-SR1/apps/dlux/loader/impl/src/main/java/org/opendaylight/dlux/loader/implementation/DluxLoaderIndexServlet.java
new file mode 100644
index 00000000..55929c0b
--- /dev/null
+++ b/sdnr/wireless-transport/code-Carbon-SR1/apps/dlux/loader/impl/src/main/java/org/opendaylight/dlux/loader/implementation/DluxLoaderIndexServlet.java
@@ -0,0 +1,184 @@
+/**
+ * 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;
+    }
+}