private StringBuffer readMessages(final String xpath) {
final StringBuffer sb = new StringBuffer();
final List errs = doc.selectNodes(xpath);
if (null != errs) {
for (final Object err : errs) {
final Node node = (Node) err;
if (sb.length() > 0) {
sb.append("\n");
}
sb.append(node.getStringValue());
logger.error("\t" + node.getStringValue());
}
}
return sb;
}
/**
* Validate the response is in expected envlope form with <result> content.
*
* @param response response
* @return Envelope if format is correct and there is no error
* @throws CentralDispatcherException if the format is incorrect, or the Envelope indicates an
* error response.
*/
private Envelope validateResponse(final WebserviceResponse response)
throws CentralDispatcherException {
if (null == response) {
throw new CentralDispatcherServerRequestException("Response was null");
}
if (null != response.getResponseMessage()) {
logger.info("Response: " + response.getResponseMessage());
}
final Document resultDoc = response.getResultDoc();
if (null == resultDoc) {
throw new CentralDispatcherServerRequestException(
"Response content unexpectedly empty. "
+ (response.getResponseMessage() != null ? response.getResponseMessage() : ""));
}
try {
logger.debug(serialize(resultDoc));
} catch (IOException e) {
logger.debug("ioexception serializing result doc", e);
}
if (!"result".equals(resultDoc.getRootElement().getName())) {
throw new CentralDispatcherServerRequestException(
"Response had unexpected content: " + resultDoc);
}
final Envelope envelope = new Envelope(response.getResultDoc());
if (envelope.isErrorResult()) {
final StringBuffer sb = new StringBuffer();
final StringBuffer buffer = envelope.errorMessages();
if (sb.length() > 0) {
sb.append(buffer);
} else {
sb.append("Server reported an error");
if (null != response.getResponseMessage()) {
sb.append(": ").append(response.getResponseMessage());
}
}
if (null != response.getResponseMessage()) {
logger.error("Server reported an error: " + response.getResponseMessage());
} else {
logger.error("Server reported an error.");
}
throw new CentralDispatcherFailureResponseException(sb.toString());
}
return envelope;
}