protected void bindPreProcessor(ProxyPreProcessor proxyPreProcessor) {
preProcessors.put(proxyPreProcessor.getName(), proxyPreProcessor);
}
protected void unbindPreProcessor(ProxyPreProcessor proxyPreProcessor) {
preProcessors.remove(proxyPreProcessor.getName());
}
protected void dispatch(
SlingHttpServletRequest request, SlingHttpServletResponse response, boolean userInputStream)
throws ServletException, IOException {
try {
Resource resource = request.getResource();
if (!resource.getPath().startsWith(PROXY_PATH_PREFIX)) {
response.sendError(
HttpServletResponse.SC_FORBIDDEN,
"Proxying templates may only be stored in " + PROXY_PATH_PREFIX);
return;
}
Node node = resource.adaptTo(Node.class);
if (!userInputStream) {
Value[] v = JcrUtils.getValues(node, SAKAI_REQUEST_STREAM_BODY);
if (v != null && v.length > 0) {
userInputStream = Boolean.parseBoolean(v[0].getString());
}
}
Map<String, String> headers = new ConcurrentHashMap<String, String>();
for (Enumeration<?> enames = request.getHeaderNames(); enames.hasMoreElements(); ) {
String name = (String) enames.nextElement();
if (!headerBacklist.contains(name)) {
headers.put(name, request.getHeader(name));
}
}
// search for special headers.
if (headers.containsKey(BASIC_USER)) {
String user = headers.get(BASIC_USER);
String password = headers.get(BASIC_PASSWORD);
Base64 base64 = new Base64();
String passwordDigest =
new String(base64.encode((user + ":" + password).getBytes("UTF-8")));
String digest = BASIC + passwordDigest.trim();
headers.put(AUTHORIZATION, digest);
}
for (Entry<String, String> e : headers.entrySet()) {
if (e.getKey().startsWith(":")) {
headers.remove(e.getKey());
}
}
// collect the parameters and store into a mutable map.
RequestParameterMap parameterMap = request.getRequestParameterMap();
Map<String, Object> templateParams = new ConcurrentHashMap<String, Object>(parameterMap);
// search for special parameters.
if (parameterMap.containsKey(BASIC_USER)) {
String user = parameterMap.getValue(BASIC_USER).getString();
String password = parameterMap.getValue(BASIC_PASSWORD).getString();
Base64 base64 = new Base64();
String passwordDigest =
new String(base64.encode((user + ":" + password).getBytes("UTF-8")));
String digest = BASIC + passwordDigest.trim();
headers.put(AUTHORIZATION, digest);
}
// we might want to pre-process the headers
if (node.hasProperty(ProxyPreProcessor.SAKAI_PREPROCESSOR)) {
String preprocessorName =
node.getProperty(ProxyPreProcessor.SAKAI_PREPROCESSOR).getString();
ProxyPreProcessor preprocessor = preProcessors.get(preprocessorName);
if (preprocessor != null) {
preprocessor.preProcessRequest(request, headers, templateParams);
} else {
LOGGER.warn(
"Unable to find pre processor of name {} for node {} ",
preprocessorName,
node.getPath());
}
}
ProxyPostProcessor postProcessor = defaultPostProcessor;
// we might want to post-process the headers
if (node.hasProperty(ProxyPostProcessor.SAKAI_POSTPROCESSOR)) {
String postProcessorName =
node.getProperty(ProxyPostProcessor.SAKAI_POSTPROCESSOR).getString();
if (postProcessors.containsKey(postProcessorName)) {
postProcessor = postProcessors.get(postProcessorName);
}
if (postProcessor == null) {
LOGGER.warn(
"Unable to find post processor of name {} for node {} ",
postProcessorName,
node.getPath());
postProcessor = defaultPostProcessor;
}
}
ProxyResponse proxyResponse =
proxyClientService.executeCall(node, headers, templateParams, null, -1, null);
try {
postProcessor.process(templateParams, response, proxyResponse);
} finally {
proxyResponse.close();
}
} catch (IOException e) {
throw e;
} catch (ProxyClientException e) {
response.sendError(500, e.getMessage());
} catch (RepositoryException e) {
response.sendError(500, e.getMessage());
}
}
