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bug5153: review-based changes/updates; see comment #54

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This commit is contained in:
Axel Uhl
2020-04-08 13:11:58 +02:00
parent 91fd377867
commit 3dabc64c48
4 changed files with 239 additions and 46 deletions
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java/com.sap.sse.debranding/src/com/sap/sse/debranding/ClientConfigurationServlet.java
+57 -39
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@@ -17,30 +17,49 @@ import org.apache.commons.io.IOUtils;
import org.apache.http.HttpStatus;
/**
* Use ${[variable name]} to get strings replaced within static pages.
* These variables are available at the moment:
* Use ${[variable name]} to get strings replaced within static pages. All occurrences of the variables listed below
* that are found in the document will be replaced. The following variables are available at the moment:
* <table border="1">
* <tr>
* <th>Variablename</th>
* <th>branded value</th>
* <th>debranded/whitelabeled</th>
* </tr>
* <tr>
* <td>SAP</td>
* <td>SAP&nbsp;</td>
* <td></td>
* </tr>
* <tr>
* <td>debrandingActive</td>
* <td>false</td>
* <td>true</td>
* </tr>
* <tr>
* <td>whitelabeled</td>
* <td></td>
* <td>-whitelabeled</td>
* </tr>
* <tr>
* <th>Variablename</th>
* <th>branded value</th>
* <th>debranded/whitelabeled</th>
* </tr>
* <tr>
* <td>"SAP"</td>
* <td>"SAP&nbsp;"</td>
* <td>""</td>
* </tr>
* <tr>
* <td>"debrandingActive"</td>
* <td>"false"</td>
* <td>"true"</td>
* </tr>
* <tr>
* <td>"whitelabeled"</td>
* <td>""</td>
* <td>"-whitelabeled"</td>
* </tr>
* </table>
* <p>
*
* Register as a servlet for all the URLs that produce such static pages that you'd like to run replacements on. Example
* registration in a {@code web.xml} configuration file:
*
* <pre>
* &lt;servlet&gt;
* &lt;display-name&gt;ClientConfigurationServlet&lt;/display-name&gt;
* &lt;servlet-name&gt;ClientConfigurationServlet&lt;/servlet-name&gt;
* &lt;servlet-class&gt;com.sap.sse.debranding.ClientConfigurationServlet&lt;/servlet-class&gt;
* &lt;/servlet&gt;
* &lt;servlet-mapping&gt;
* &lt;servlet-name&gt;ClientConfigurationServlet&lt;/servlet-name&gt;
* &lt;url-pattern&gt;*.html&lt;/url-pattern&gt;
* &lt;/servlet-mapping&gt;
* </pre>
* <p>
*
* The servlet caches the results, both, for the branded as well as the unbranded/replaced contents.
*
* @see com.sap.sailing.server.gateway.test.support.WhitelabelSwitchServlet
* @author Georg Herdt
@@ -61,25 +80,24 @@ public class ClientConfigurationServlet extends HttpServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
final boolean deBrandingActive = Boolean.valueOf(System.getProperty(DEBRANDING_PROPERTY_NAME, "false"));
final String servletPath = req.getServletPath();
byte[] cachedPage = null;
if ((cachedPage = cache.get(generateKey(servletPath, deBrandingActive))) != null) {
final byte[] cachedPage;
final String pageKey = generateKey(servletPath, deBrandingActive);
if ((cachedPage = cache.get(pageKey)) != null) {
IOUtils.write(cachedPage, resp.getOutputStream());
return;
}
try (InputStream in = this.getServletContext().getResourceAsStream(servletPath);) {
byte[] buffer = IOUtils.toByteArray(in);
String content = new String(buffer);
for (Map.Entry<String, String> item : createReplacementMap(deBrandingActive).entrySet()) {
content = content.replace("${" + item.getKey() + "}", item.getValue());
} else {
try (InputStream in = this.getServletContext().getResourceAsStream(servletPath)) {
byte[] buffer = IOUtils.toByteArray(in);
String content = new String(buffer);
for (Map.Entry<String, String> item : createReplacementMap(deBrandingActive).entrySet()) {
content = content.replace("${" + item.getKey() + "}", item.getValue());
}
byte[] bytes = content.getBytes();
IOUtils.write(bytes, resp.getOutputStream());
cache.computeIfAbsent(pageKey, key -> bytes);
} catch (RuntimeException e) {
logger.log(Level.WARNING, "could not process or read resource " + servletPath, e);
resp.sendError(HttpStatus.SC_INTERNAL_SERVER_ERROR);
}
byte[] bytes = content.getBytes();
IOUtils.write(bytes, resp.getOutputStream());
cache.computeIfAbsent(generateKey(servletPath, deBrandingActive), key -> bytes);
} catch (RuntimeException e) {
logger.log(Level.WARNING, "could not process or read resource " + servletPath, e);
resp.sendError(HttpStatus.SC_INTERNAL_SERVER_ERROR);
}
}