public final synchronized T getInfo(URI uri, RenderingContext context) {
T result = cache.get(uri);
if (result == null) {
try {
result = requestInfo(uri, context);
} catch (Exception e) {
loader
.logger()
.info(
"Error while getting capabilities for "
+ uri
+ ". The print module will assume it's a standard WMS.");
String stackTrace = "";
for (StackTraceElement el : e.getStackTrace()) {
stackTrace += el.toString() + "\n";
}
loader.logger().info(stackTrace);
result = loader.createNewErrorResult();
}
if (loader.logger().isDebugEnabled()) {
loader.logger().debug("GetCapabilities " + uri + ": " + result);
}
cache.put(uri, result);
}
return result;
}
private T requestInfo(URI baseUrl, RenderingContext context)
throws IOException, URISyntaxException, ParserConfigurationException, SAXException {
URL url = loader.createURL(baseUrl, context);
GetMethod method = null;
try {
final InputStream stream;
if ((url.getProtocol().equals("http") || url.getProtocol().equals("https"))
&& context.getConfig().localHostForwardIsFrom(url.getHost())) {
String scheme = url.getProtocol();
final String host = url.getHost();
if (url.getProtocol().equals("https")
&& context.getConfig().localHostForwardIsHttps2http()) {
scheme = "http";
}
URL localUrl = new URL(scheme, "localhost", url.getPort(), url.getFile());
HttpURLConnection connexion = (HttpURLConnection) localUrl.openConnection();
connexion.setRequestProperty("Host", host);
for (Map.Entry<String, String> entry : context.getHeaders().entrySet()) {
connexion.setRequestProperty(entry.getKey(), entry.getValue());
}
stream = connexion.getInputStream();
} else {
method = new GetMethod(url.toString());
for (Map.Entry<String, String> entry : context.getHeaders().entrySet()) {
method.setRequestHeader(entry.getKey(), entry.getValue());
}
context.getConfig().getHttpClient(baseUrl).executeMethod(method);
int code = method.getStatusCode();
if (code < 200 || code >= 300) {
throw new IOException(
"Error "
+ code
+ " while reading the Capabilities from "
+ url
+ ": "
+ method.getStatusText());
}
stream = method.getResponseBodyAsStream();
}
final T result;
try {
result = loader.parseInfo(stream);
} finally {
stream.close();
}
return result;
} finally {
if (method != null) {
method.releaseConnection();
}
}
}